WO2024037444A1 - Sludge dewatering system and use thereof - Google Patents

Sludge dewatering system and use thereof Download PDF

Info

Publication number
WO2024037444A1
WO2024037444A1 PCT/CN2023/112514 CN2023112514W WO2024037444A1 WO 2024037444 A1 WO2024037444 A1 WO 2024037444A1 CN 2023112514 W CN2023112514 W CN 2023112514W WO 2024037444 A1 WO2024037444 A1 WO 2024037444A1
Authority
WO
WIPO (PCT)
Prior art keywords
sludge
dehydrator
dehydration
belt
conditioner
Prior art date
Application number
PCT/CN2023/112514
Other languages
French (fr)
Chinese (zh)
Inventor
张辰
熊建英
贺骏
石广甫
谢太平
Original Assignee
上海市政工程设计研究总院（集团）有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 上海市政工程设计研究总院（集团）有限公司 filed Critical 上海市政工程设计研究总院（集团）有限公司
Publication of WO2024037444A1 publication Critical patent/WO2024037444A1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • C02F11/125—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using screw filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/26—Drying gases or vapours
    • B01D53/265—Drying gases or vapours by refrigeration (condensation)
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • C02F11/123—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using belt or band filters
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/10—Energy recovery

Definitions

  • the invention belongs to the technical field of sludge dehydration treatment, and in particular relates to a sludge reduction system and its application.
  • the moisture content of the sludge in the thickening tank of the sewage plant is about 98%, and the moisture content of the sludge produced by the ordinary centrifugal dehydration process is about 80%.
  • Dehydrating sludge to reduce its moisture content is an effective method to reduce sludge volume and increase sludge calorific value.
  • the stacked screw sludge dehydrator consists of a fixed ring and a moving ring stacked on top of each other, with a spiral shaft running through them to form a filter body.
  • the stacked screw sludge dehydrator When the stacked screw sludge dehydrator is running, the sludge enters the filter cartridge from the feed port and is pushed by the spiral shaft vanes and moves toward the discharge port. Since the pitch between the spiral shaft vanes gradually decreases, the sludge is The pressure also increases, and dehydration begins under the action of the pressure difference.
  • the filtrate is discharged from the filter gap formed by the fixed ring and the movable ring.
  • the filter is cleaned by relying on the self-cleaning function between the fixed plate and the movable plate. The gap prevents clogging, and the mud cake is discharged from the discharge port under the propelling action of the screw shaft after being fully dehydrated.
  • the belt dehydration system mainly has the following two steps: 1 sludge modification - to sludge through the dosing system Add chemicals in the mud modification mixer and react with the sludge evenly to change the physical and chemical properties of the sludge.
  • sludge modification mixer sludge and chemicals are mixed quickly and evenly.
  • the function of the agent is to destroy the cell wall and destabilize the colloid, thereby reducing the water-holding capacity of the sludge and converting the bound water into "destabilized water”; increasing the internal porosity of the sludge is beneficial to the distribution and distribution of the subsequent deep dehydration stage. Dehydration.
  • the low-temperature drying process uses a dehumidification heat pump to use hot air circulation, condensation, dehumidification and drying of the sludge.
  • the dehumidification heat pump serves as the power source of the dryer and does not require the addition of additional heat sources to achieve energy saving purposes.
  • Dehumidification heat pump drying uses a refrigeration system to cool down the humid air from the drying room. It dehumidifies and uses the heat pump principle to recover the latent heat of moisture condensation and heat the air to dry the materials.
  • the dehumidification heat pump is a combination of dehumidification (dehumidification and drying) and heat pump (energy recovery), and the energy is recycled during the drying process.
  • the above three main processes all have their own optimal dehydration and high-efficiency sections.
  • the present invention organically combines the three processes to improve the efficiency of sludge dewatering and reduce operating costs.
  • the invention provides a sludge dehydration system and its application.
  • the system can realize the organic combination of snail dehydration, belt dehydration, low-temperature drying and dehydration and other technologies, so as to significantly improve the processing efficiency of sludge dehydration and reduce operating costs. .
  • the invention provides a sludge dehydration system, which includes a centrifugal pump, a homogenizing tank, a wet sludge silo, a screw pump, an integrated dosing system, a screw stacking dehydrator, a #1 intermediate buffer bin, a conditioning agent system, and a sludge dewatering system.
  • Conditioning machine belt dehydrator, 2# intermediate buffer bin, low-temperature drying system and dry sludge silo; the integrated dosing system is connected to the screw stacking dehydrator through a screw pump, and the outlet end of the homogenization tank is connected to the screw pump through a screw pump.
  • the sludge inlet end of the snail stacking dehydrator is connected, and the sludge outlet end of the snail stacking dehydrator is connected to the inlet end of the 1# intermediate buffer bin.
  • the outlet end of the 1# intermediate buffer bin is connected to the sludge inlet end of the sludge conditioner through a screw conveyor.
  • the outlet end of the wet sludge bin is connected to the wet sludge inlet end of the sludge conditioner through a screw pump.
  • the tap water pipeline is connected to the sludge inlet end of the sludge conditioner.
  • the conditioner system is connected.
  • the conditioner outlet of the conditioner system is connected to the conditioner inlet of the sludge conditioner.
  • the sludge outlet of the sludge conditioner is connected to the sludge inlet of the belt dehydrator.
  • the belt dehydrator The sludge outlet end is connected to the sludge inlet end of the 2# intermediate buffer bin through a lifting scraper conveyor, and the sludge outlet end of the 2# intermediate buffer bin is connected to the sludge inlet end of the low-temperature drying system through a screw conveyor.
  • the sludge outlet end of the low-temperature drying system is connected to the sludge inlet end of the dry sludge silo via a lifting scraper conveyor.
  • a further preferred solution is that the filtrate outlet end of the screw stacking dehydrator, the filtrate outlet end of the belt dehydrator, and the condensed water discharge end of the low-temperature drying system are respectively connected to the sewage well.
  • centrifugal pump is a spiral centrifugal pump or an open impeller centrifugal pump.
  • a further preferred solution is that in the vertical arrangement, the snail stacking dehydrator is arranged on the upper level of the belt dewatering machine workshop, and the discharged material from the snail stacking dehydrator can flow into the 1# intermediate buffer bin by gravity.
  • a further preferred solution is that the belt dehydrator is equipped with a flushing system and an air compressor system, and the water used in the flushing system is factory recycle water; the air compressor system is mainly used for tensioning and correcting the filter belt; the low-temperature drying The system is equipped with a circulating cooling system, and the cooling water is recycled water from the factory.
  • a further preferred solution is that the snail stacking dehydrator, belt dehydrator, low-temperature drying system, wet sludge silo, and dry sludge silo are all equipped with sealing covers, and the sealing covers are connected to a negative pressure exhaust device. , perform negative pressure extraction and deodorization.
  • the present invention provides the application of the above-mentioned sludge dehydration system.
  • Using the above-mentioned sludge dehydration system to process sludge with a water content of 99%-97% includes the following steps:
  • S1 The sludge from the concentration tank with a water content of 99%-97% enters the homogenization tank, and enters the snail-stacking dehydrator from the outlet end of the homogenization tank through the screw pump; tap water and chemicals enter the snail-stacking dehydrator through the screw pump. , the sludge and chemicals are fully mixed in the mixing box in the snail stacking dehydrator, and the mixed material is pushed and squeezed by the spiral shaft of the snail stacking dehydrator to obtain sludge with a water content of about 80%. Enter the 1# intermediate cache warehouse;
  • S2 The sludge with a water content of about 80% in the 1# intermediate buffer bin is sent to the Sludge conditioner, the medicament from the conditioner system enters the sludge conditioner. The sludge is mixed with the medicament and then enters the belt dehydrator. It is dehydrated under the squeezing action of the high-pressure belt machine. The sludge from the belt dehydration system is then passed through Lift the scraper conveyor into the 2# intermediate buffer bin;
  • S3 The sludge from the 2# intermediate buffer bin enters the low-temperature drying system through spiral conveying.
  • the dehumidification heat pump uses hot air circulation, condensation, dehumidification and drying to dry the sludge. After dehydration, the sludge with a certain moisture content is obtained, and then enters the drying system through the lifting scraper conveyor. The sludge is temporarily stored in the silo and then shipped out.
  • a further preferred solution is to use a spiral centrifugal pump or an open impeller centrifugal pump to transport the sludge from the concentration tank with a water content of 99%-97% into the homogenization tank.
  • a further preferred solution is to send the filtrate discharged from the snail stacking dehydrator and the belt dehydrator to the sewage well respectively, and to send the condensed water discharged from the low-temperature drying system to the sewage well.
  • a further preferred solution is that in the low-temperature drying system described in this application, the dehumidification heat pump uses hot air circulation, condensation, dehumidification and drying of the sludge, and the water content of the sludge obtained after dehydration is 50%-10%.
  • the water content of the sludge produced by the belt dehydration system is 68%-72%, which facilitates the cutting and forming of sludge from the low-temperature drying system.
  • the present invention also provides another application of the above-mentioned sludge dehydration system.
  • Using the above-mentioned sludge dehydration system to process sludge with a water content of 80-85% includes the following steps:
  • S2 The sludge from the 2# intermediate buffer bin enters the low-temperature drying system through a spiral.
  • the dehumidification heat pump uses hot air circulation, condensation, dehumidification and drying to complete the sludge dehydration. After dehydration, the sludge with a certain moisture content is obtained, and then it is upgraded
  • the scraper conveyor enters the dry sludge silo for temporary storage before being transported out.
  • a further preferred solution is to send the filtrate discharged from the belt dehydrator to the sewage well, and send the condensed water discharged from the low-temperature drying system to the sewage well.
  • a further preferred solution is that in this application the low-temperature drying system and the dehumidification heat pump dehumidify the sludge Hot air circulation condensation, dehumidification and drying are used, and the water content of the sludge obtained after dehydration is 50%-10%.
  • the water content of the sludge produced by the belt dehydration system is 68%-72%, which facilitates the cutting and forming of sludge from the low-temperature drying system.
  • the sludge dehydration system includes a centrifugal pump, a wet sludge silo, a sludge conveying screw pump, an integrated dosing system, a snail stacking dehydrator, a #1 intermediate buffer bin, a conditioning agent system, and a sludge conveying screw pump.
  • Mud conditioner, belt dehydrator, 2# intermediate buffer bin, low temperature drying system and dry sludge silo, etc. organically combine the technologies of stacked snail dehydration, belt dehydration and low temperature drying and dehydration to make them in their respective The high-efficiency section of the process can effectively improve the efficiency of sludge dewatering and reduce operating costs;
  • the sludge dehydration system uses a spiral or open impeller centrifugal pump to transport concentrated sludge, which solves the problem of easy blockage during sludge transport;
  • the sludge dehydration system provided by the present invention in order to ensure that the three processes are closely connected, is equipped with intermediate cache silos between process sections, which solves the problem of equipment processing capabilities not being well matched during operation;
  • the water content of the sludge produced by the belt dehydrator can be preferably controlled to about 70%, which solves the problem The problem of uneven sludge cutting and shaping in the low-temperature drying process section;
  • the sludge dehydration system provided by the present invention in order to ensure that the odor of the sludge during the dehydration process can be effectively controlled, includes stacked snail dehydrators, belt dehydrators, low-temperature drying systems, sludge silos and other equipment.
  • the use of negative pressure extraction after covering or sealing solves the problem of odor leakage during sludge treatment;
  • the sludge dehydration system and its application provided by the present invention can effectively treat municipal sludge. Compared with the traditional single sludge dehydration method, the present invention can significantly improve the operational flexibility of the system and enhance the future impact of the process system. Adaptability to mud moisture content.
  • Figure 1 is a schematic diagram of a sludge dehydration system according to an embodiment of the present invention.
  • sludge dehydration system shown in Figure 1, which includes a centrifugal pump, a homogenizing tank, a wet sludge silo, a screw pump, an integrated dosing system, a snail stacking dehydrator, a #1 intermediate buffer bin, and a conditioning agent system, sludge conditioner, belt dehydrator, 2# intermediate buffer bin, low-temperature drying system and dry sludge silo, etc.
  • the integrated dosing system is connected to the snail stacking dehydrator via a screw pump.
  • the outlet end of the homogenization tank is connected to the sludge inlet end of the snail stacking dehydrator via a screw pump.
  • the sludge outlet end of the snail stacking dehydrator is connected to the 1# intermediate buffer.
  • the inlet end of the silo is connected, the outlet end of the 1# intermediate buffer silo is connected to the sludge inlet end of the sludge conditioner through a screw conveyor, and the outlet end of the wet sludge silo is connected to the wet sludge inlet end of the sludge conditioner through a screw pump.
  • the tap water pipeline is connected to the conditioner system
  • the conditioner outlet end of the conditioner system is connected to the conditioner inlet end of the sludge conditioner
  • the sludge outlet end of the sludge conditioner is connected to the sludge inlet end of the belt dehydrator.
  • the sludge outlet end of the belt dehydrator is connected to the sludge inlet end of the 2# intermediate buffer bin through a lifting scraper conveyor
  • the sludge outlet end of the 2# intermediate buffer bin is connected to the sludge inlet of the low-temperature drying system through a screw conveyor.
  • the sludge inlet end of the low-temperature drying system is connected to the sludge inlet end of the dry sludge silo through the lifting scraper conveyor; the filtrate outlet end of the stacked screw dehydrator and the filtrate outlet end of the belt dehydrator , and the condensed water discharge end of the low-temperature drying system are connected to the sewage well respectively.
  • the sludge dehydration system is arranged vertically, and the snail stacking dehydrator is arranged in the upper workshop of the belt dehydrator.
  • the belt dehydrator is equipped with a flushing system, and the water used in the flushing system is recycled water from the factory.
  • the low-temperature drying system is equipped with a circulating cooling system, and the cooling water is recycled water from the factory area.
  • the snail stacking dehydrator, belt dehydrator, low-temperature drying system, wet sludge silo, and dry sludge silo are all equipped with negative pressure air sealing covers, which can perform negative pressure air extraction and deodorization.
  • the cache volumes of the 1# intermediate cache bin and 2# intermediate cache bin are designed to effectively connect with the subsequent processing system.
  • the sludge dehydration system of the present invention is used to treat sludge with a water content of 98%, including the following steps:
  • S1 Spiral dehydration system: The sludge from the concentration tank with a water content of about 98% enters the homogenization tank through a spiral centrifugal pump or an open impeller centrifugal pump, and enters the screw pump from the outlet end of the homogenization tank through a screw pump.
  • Dehydrator tap water and chemicals (PAM, mass concentration 0.1%, dosage mass fraction 3 ⁇ 5 ⁇ ,) enter the snail-stacking dehydrator through the screw pump, and the sludge and reagents are in the mixing box in the snail-stacking dehydrator.
  • PAM tap water and chemicals
  • the mixed material After thorough mixing, the mixed material is pushed and squeezed by the spiral shaft and blade of the screw stacking dehydrator to obtain sludge with a water content of about 80%, and enters the 1# intermediate buffer bin. Send the filtrate discharged from the snail stacking dehydrator to the sewage well respectively.
  • S2 Belt dehydration system: The sludge with a water content of about 80% in the 1# intermediate buffer bin is sent to the sludge conditioner via a screw conveyor. The chemicals (combined salts, mass concentration 20) from the conditioner system %-30%, the dosage mass fraction is 1.5%) and enters the sludge conditioner through the diaphragm metering pump. After the sludge is mixed with the chemicals, it enters the belt dehydrator and is dehydrated under the squeezing action of the high-pressure belt machine. After dehydration The water content of the sludge is about 70%, and it enters the 2# intermediate buffer bin via the lifting scraper conveyor. Send the filtrate discharged from the belt dehydrator to the sewage well.
  • S3 Low-temperature drying and dehydration system: The sludge with a water content of 70% in the 2# intermediate buffer bin is transported by the spiral into the low-temperature drying system.
  • the dehumidification heat pump uses hot air circulation, condensation, dehumidification and drying for the sludge (the standard drying return air temperature is 45 ⁇ 56°C, air supply temperature is 60 ⁇ 75°C), after dehydration, the sludge with a water content of about 50% (the moisture content of the sludge is adjustable) is obtained, and then enters the dry sludge material through the lifting scraper conveyor Temporarily stored in warehouse and shipped out later. Send the condensed water discharged from the low-temperature drying system to the sewage well.
  • S1 Belt dehydration system: sludge with a water content of 80% to 85% enters the wet sludge silo for temporary storage and is then transported to the sludge conditioner and the agent (combined salt) from the conditioner system through the sludge screw pump. Class, mass concentration 20%-30%, dosage mass fraction 1.5%) is mixed and enters the belt dehydrator. Dehydration is completed under the squeezing action of the high-pressure belt machine. The moisture content of the dehydrated sludge is about 70 %about, Then it is transported by the lifting scraper conveyor into the 2# intermediate buffer bin. Send the filtrate discharged from the belt dehydrator to the sewage well.
  • Low-temperature drying and dehydration system The sludge with a water content of 70% from the 2# intermediate buffer bin enters the low-temperature drying system through a spiral.
  • the dehumidification heat pump uses hot air circulation, condensation, dehumidification and drying for the sludge (the standard drying return air temperature is 45 ⁇ 56°C, supply air temperature is 60 ⁇ 75°C) to complete sludge dehydration.
  • the sludge with a water content of 50% (the moisture content of the sludge is adjustable) is obtained, and then enters the dry sludge silo for temporary storage via a lifting scraper conveyor before being transported outside. Send the condensed water discharged from the low-temperature drying system to the sewage well.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Treatment Of Sludge (AREA)

Abstract

The present invention provides a sludge dewatering system and a use thereof. The system comprises a stacked screw dewatering system, a belt type dewatering system and a low-temperature drying system. Sludge discharged from the stacked screw dewatering system enters the belt type dewatering system via a first intermediate buffer tank, sludge discharged from the belt type dewatering system enters the low-temperature drying system via a second intermediate buffer tank, and sludge discharged from the low-temperature drying system enters a dry sludge silo for temporary storage and then is transported externally. The entering sludge can be thickener sludge having a water mass fraction of about 97%-99% or centrifugal dewatered sludge having a water mass fraction of 80%-85%, and a water content of sludge is adjustable, such that the system has the advantages of flexible process, large adjustability, and high adaptability. According to the present invention, the optimal efficient sections of different dewatering systems are combined and utilized, such that the operation flexibility of a sludge treatment apparatus can be remarkably improved, the sludge dewatering efficiency is improved, and the operation energy consumption is reduced.

Description

一种污泥脱水***及其应用A sludge dewatering system and its application
本申请要求申请日为2022年8月15日的中国专利申请202210973220.7的优先权。本申请引用上述中国专利申请的全文。This application claims priority from Chinese patent application 202210973220.7 with a filing date of August 15, 2022. This application cites the full text of the above-mentioned Chinese patent application.
技术领域Technical field
本发明属于污泥脱水处理技术领域，尤其是涉及一种污泥减量化***及其应用。The invention belongs to the technical field of sludge dehydration treatment, and in particular relates to a sludge reduction system and its application.
背景技术Background technique
随着我国城镇污水排放量的增加和污水处理率的不断提高，城镇污水处理厂污泥产量也逐渐增加。2014年-2020年城镇生活污水排放量自510.3亿吨增长至550.5亿吨左右。一般情况下，污水处理厂处理1万吨生活污水可产生含水率80％的污泥5-8吨。按照6.5吨单位产出进行推算，2014-2020年，中国生活污泥产生量维持在3500万吨以上。With the increase of urban sewage discharge and the continuous improvement of sewage treatment rate in my country, the sludge production of urban sewage treatment plants has also gradually increased. From 2014 to 2020, urban domestic sewage discharge increased from 51.03 billion tons to about 55.05 billion tons. Under normal circumstances, a sewage treatment plant can produce 5-8 tons of sludge with a moisture content of 80% when treating 10,000 tons of domestic sewage. Calculated based on a unit output of 6.5 tons, China's domestic sludge production will remain above 35 million tons from 2014 to 2020.
污水厂浓缩池污泥含水率约98％左右，普通离心脱水工艺出泥含水率约80％左右。对污泥进行脱水降低其含水率是减少污泥体积、提升污泥热值的有效方法。The moisture content of the sludge in the thickening tank of the sewage plant is about 98%, and the moisture content of the sludge produced by the ordinary centrifugal dehydration process is about 80%. Dehydrating sludge to reduce its moisture content is an effective method to reduce sludge volume and increase sludge calorific value.
叠螺式污泥脱水机由固定环、游动环相互层叠，螺旋轴贯穿其中形成的过滤主体。叠螺式污泥脱水机运行时，污泥从进料口进入滤筒后受到螺旋轴旋片的推送而向卸料口移动，由于螺旋轴旋片之间的螺距逐渐缩小，因此污泥所受的压力也随着不断增大，并在压差的作用下开始脱水，滤液从固定环和活动环所形成的滤缝排出，同时依靠固定板和活动板之间的自清洗功能，清扫过滤间隙防止堵塞，泥饼经过充分脱水后在螺旋轴的推进作用下从卸料口排出。The stacked screw sludge dehydrator consists of a fixed ring and a moving ring stacked on top of each other, with a spiral shaft running through them to form a filter body. When the stacked screw sludge dehydrator is running, the sludge enters the filter cartridge from the feed port and is pushed by the spiral shaft vanes and moves toward the discharge port. Since the pitch between the spiral shaft vanes gradually decreases, the sludge is The pressure also increases, and dehydration begins under the action of the pressure difference. The filtrate is discharged from the filter gap formed by the fixed ring and the movable ring. At the same time, the filter is cleaned by relying on the self-cleaning function between the fixed plate and the movable plate. The gap prevents clogging, and the mud cake is discharged from the discharge port under the propelling action of the screw shaft after being fully dehydrated.
带式脱水***主要有以下两个步骤：①污泥改性——通过加药***向污 泥改性混合器内投加药剂与污泥均匀混合反应，改变污泥的物理和化学性质。在污泥改性混合器内，污泥与药剂快速、均匀的混合。药剂的作用是破坏细胞壁、使胶体脱稳，从而起到降低污泥持水性的作用，使结合水转化为“脱稳水”；提高污泥内部孔隙率，有利于后续深度脱水阶段的分布和脱水。②污泥脱水——改性后污泥输送到带式深度脱水机，在高压带式机的压榨作用力下实现污泥深度脱水，深度脱水后的污泥形成5-10mm多孔隙薄片状泥饼，远低于高压板框式污泥深度脱水机的泥饼厚度(20-30mm)。The belt dehydration system mainly has the following two steps: ① sludge modification - to sludge through the dosing system Add chemicals in the mud modification mixer and react with the sludge evenly to change the physical and chemical properties of the sludge. In the sludge modification mixer, sludge and chemicals are mixed quickly and evenly. The function of the agent is to destroy the cell wall and destabilize the colloid, thereby reducing the water-holding capacity of the sludge and converting the bound water into "destabilized water"; increasing the internal porosity of the sludge is beneficial to the distribution and distribution of the subsequent deep dehydration stage. Dehydration. ② Sludge dehydration - the modified sludge is transported to the belt-type deep dewatering machine. Under the squeezing force of the high-pressure belt machine, the sludge is deeply dehydrated. The sludge after deep dehydration forms 5-10mm porous flake mud. cake, which is much lower than the mud cake thickness (20-30mm) of the high-pressure plate and frame sludge depth dewatering machine.
低温干化工艺是利用除湿热泵对污泥采用热风循环冷凝除湿烘干；其中除湿热泵作为干化机的动力源，不需要增加额外的热源，实现节能目的。除湿热泵烘干是利用制冷***使来自干燥室的湿空气降温，脱湿同时通过热泵原理回收水分凝结潜热加热空气达到干燥物料目的。除湿热泵是除湿(去湿干燥)加热泵(能量回收)结合，干燥过程中能量循环利用。The low-temperature drying process uses a dehumidification heat pump to use hot air circulation, condensation, dehumidification and drying of the sludge. The dehumidification heat pump serves as the power source of the dryer and does not require the addition of additional heat sources to achieve energy saving purposes. Dehumidification heat pump drying uses a refrigeration system to cool down the humid air from the drying room. It dehumidifies and uses the heat pump principle to recover the latent heat of moisture condensation and heat the air to dry the materials. The dehumidification heat pump is a combination of dehumidification (dehumidification and drying) and heat pump (energy recovery), and the energy is recycled during the drying process.
上述三种主体工艺均有各自最优的脱水高效段，本发明将三种工艺有机结合，提升了污泥脱水处理的效率并降低了运营成本。The above three main processes all have their own optimal dehydration and high-efficiency sections. The present invention organically combines the three processes to improve the efficiency of sludge dewatering and reduce operating costs.
发明内容Contents of the invention
本发明提供一种污泥脱水***用其应用，该***可实现叠螺脱水、带式脱水和低温干化脱水等技术的有机结合，达到显著提升污泥脱水的处理效率并降低运营成本的目的。The invention provides a sludge dehydration system and its application. The system can realize the organic combination of snail dehydration, belt dehydration, low-temperature drying and dehydration and other technologies, so as to significantly improve the processing efficiency of sludge dehydration and reduce operating costs. .
下面对本发明的技术方案做详细描述。The technical solution of the present invention is described in detail below.
为实现本发明目的，本发明采用的一个技术方案，具体为：In order to achieve the purpose of the present invention, a technical solution adopted by the present invention is specifically:
本发明提供一种污泥脱水***，包括离心泵、均质池、湿污泥料仓、螺杆泵、一体化加药***、叠螺脱水机、1#中间缓存仓、调理剂***、污泥调理机、带式脱水机、2#中间缓存仓、低温干化***和干污泥料仓；一体化加药***经螺杆泵与叠螺脱水机连接，均质池的出口端经螺杆泵与叠螺脱水机的污泥进口端连接，叠螺脱水机的污泥出口端与1#中间缓存仓进口端连接， 1#中间缓存仓出口端经螺旋输送机与污泥调理机的污泥进口端连接，湿污泥料仓的出口端经螺杆泵与污泥调理机的湿污泥入口端连接，自来水管线与调理剂***连接，调理剂***的调理剂出口端与污泥调理机的调理剂入口端连接，污泥调理机的污泥出口端与带式脱水机的污泥进口端连接，带式脱水机的污泥出口端经提升刮板输送机与2#中间缓存仓的污泥进口端连接，2#中间缓存仓的污泥出口端经螺旋输送机与低温干化***的污泥进口端连接，低温干化***的污泥出口端经提升刮板输送机与干污泥料仓的污泥入口端连接。The invention provides a sludge dehydration system, which includes a centrifugal pump, a homogenizing tank, a wet sludge silo, a screw pump, an integrated dosing system, a screw stacking dehydrator, a #1 intermediate buffer bin, a conditioning agent system, and a sludge dewatering system. Conditioning machine, belt dehydrator, 2# intermediate buffer bin, low-temperature drying system and dry sludge silo; the integrated dosing system is connected to the screw stacking dehydrator through a screw pump, and the outlet end of the homogenization tank is connected to the screw pump through a screw pump. The sludge inlet end of the snail stacking dehydrator is connected, and the sludge outlet end of the snail stacking dehydrator is connected to the inlet end of the 1# intermediate buffer bin. The outlet end of the 1# intermediate buffer bin is connected to the sludge inlet end of the sludge conditioner through a screw conveyor. The outlet end of the wet sludge bin is connected to the wet sludge inlet end of the sludge conditioner through a screw pump. The tap water pipeline is connected to the sludge inlet end of the sludge conditioner. The conditioner system is connected. The conditioner outlet of the conditioner system is connected to the conditioner inlet of the sludge conditioner. The sludge outlet of the sludge conditioner is connected to the sludge inlet of the belt dehydrator. The belt dehydrator The sludge outlet end is connected to the sludge inlet end of the 2# intermediate buffer bin through a lifting scraper conveyor, and the sludge outlet end of the 2# intermediate buffer bin is connected to the sludge inlet end of the low-temperature drying system through a screw conveyor. The sludge outlet end of the low-temperature drying system is connected to the sludge inlet end of the dry sludge silo via a lifting scraper conveyor.
进一步的优选方案是，所述叠螺脱水机的滤液出口端、所述带式脱水机的滤液出口端、以及所述低温干化***冷凝水排出端分别与污水井连接。A further preferred solution is that the filtrate outlet end of the screw stacking dehydrator, the filtrate outlet end of the belt dehydrator, and the condensed water discharge end of the low-temperature drying system are respectively connected to the sewage well.
进一步的优选方案是，所述离心泵为螺旋离心泵或开式叶轮离心泵。A further preferred solution is that the centrifugal pump is a spiral centrifugal pump or an open impeller centrifugal pump.
进一步的优选方案是，在竖向布置上，所述叠螺脱水机布置在带式脱水机车间的上层，叠螺脱水机出料可利用重力自流进入1#中间缓存仓。A further preferred solution is that in the vertical arrangement, the snail stacking dehydrator is arranged on the upper level of the belt dewatering machine workshop, and the discharged material from the snail stacking dehydrator can flow into the 1# intermediate buffer bin by gravity.
进一步的优选方案是，所述带式脱水机配置有冲洗***及空压机***，冲洗***用水为厂区回用水；空压机***主要用于滤带的张紧与纠偏；所述低温干化***配置有循环冷却***，冷却水为厂区回用水。A further preferred solution is that the belt dehydrator is equipped with a flushing system and an air compressor system, and the water used in the flushing system is factory recycle water; the air compressor system is mainly used for tensioning and correcting the filter belt; the low-temperature drying The system is equipped with a circulating cooling system, and the cooling water is recycled water from the factory.
进一步的优选方案是，所述叠螺脱水机、带式脱水机、低温干化***、湿污泥料仓、以及干污泥料仓均设置密封罩，所述密封罩连接负压抽气装置，进行负压抽气除臭。A further preferred solution is that the snail stacking dehydrator, belt dehydrator, low-temperature drying system, wet sludge silo, and dry sludge silo are all equipped with sealing covers, and the sealing covers are connected to a negative pressure exhaust device. , perform negative pressure extraction and deodorization.
进一步的，本发明提供上述的污泥脱水***的应用，采用上述污泥脱水***处理含水质量分率99％-97％的污泥，包括以下步骤：Further, the present invention provides the application of the above-mentioned sludge dehydration system. Using the above-mentioned sludge dehydration system to process sludge with a water content of 99%-97% includes the following steps:
S1：来自浓缩池的含水质量分率99％-97％的污泥进入均质池，从均质池的出口端经螺杆泵进入叠螺脱水机；自来水与药剂经螺杆泵进入叠螺脱水机，污泥与药剂在叠螺脱水机中的混合箱内充分混合，混合后的物质在叠螺脱水机螺旋轴旋片的推动挤压下，得到含水质量分率约80％左右的污泥，进入1#中间缓存仓；S1: The sludge from the concentration tank with a water content of 99%-97% enters the homogenization tank, and enters the snail-stacking dehydrator from the outlet end of the homogenization tank through the screw pump; tap water and chemicals enter the snail-stacking dehydrator through the screw pump. , the sludge and chemicals are fully mixed in the mixing box in the snail stacking dehydrator, and the mixed material is pushed and squeezed by the spiral shaft of the snail stacking dehydrator to obtain sludge with a water content of about 80%. Enter the 1# intermediate cache warehouse;
S2：1#中间缓存仓的含水质量分率80％左右的污泥，经螺旋输送机送至 污泥调理机，来自调理剂***中的药剂进入污泥调理机，污泥与药剂混合后进入带式脱水机，在高压带式机的压榨作用下进行脱水，带式脱水***出泥再经提升刮板输送机进入2#中间缓存仓；S2: The sludge with a water content of about 80% in the 1# intermediate buffer bin is sent to the Sludge conditioner, the medicament from the conditioner system enters the sludge conditioner. The sludge is mixed with the medicament and then enters the belt dehydrator. It is dehydrated under the squeezing action of the high-pressure belt machine. The sludge from the belt dehydration system is then passed through Lift the scraper conveyor into the 2# intermediate buffer bin;
S3：2#中间缓存仓污泥经螺旋输送进入低温干化***，除湿热泵对污泥采用热风循环冷凝除湿烘干，脱水后得到一定含水率的污泥，再经提升刮板输送机进入干污泥料仓暂存后外运。S3: The sludge from the 2# intermediate buffer bin enters the low-temperature drying system through spiral conveying. The dehumidification heat pump uses hot air circulation, condensation, dehumidification and drying to dry the sludge. After dehydration, the sludge with a certain moisture content is obtained, and then enters the drying system through the lifting scraper conveyor. The sludge is temporarily stored in the silo and then shipped out.
进一步的优选方案是，采用螺旋离心泵或开式叶轮离心泵输送含水质量分率99％-97％的浓缩池污泥进入所述均质池。A further preferred solution is to use a spiral centrifugal pump or an open impeller centrifugal pump to transport the sludge from the concentration tank with a water content of 99%-97% into the homogenization tank.
进一步的优选方案是，将叠螺脱水机和带式脱水机排出的滤液分别送至污水井，将低温干化***排出的冷凝水送至污水井。A further preferred solution is to send the filtrate discharged from the snail stacking dehydrator and the belt dehydrator to the sewage well respectively, and to send the condensed water discharged from the low-temperature drying system to the sewage well.
进一步的优选方案是，在此应用中所述低温干化***，除湿热泵对污泥采用热风循环冷凝除湿烘干，脱水后得到的污泥含水质量分率为50％-10％。所述带式脱水***出泥的含水质量分率为68％-72％，以利于低温干化***污泥切条成型。A further preferred solution is that in the low-temperature drying system described in this application, the dehumidification heat pump uses hot air circulation, condensation, dehumidification and drying of the sludge, and the water content of the sludge obtained after dehydration is 50%-10%. The water content of the sludge produced by the belt dehydration system is 68%-72%, which facilitates the cutting and forming of sludge from the low-temperature drying system.
进一步的，本发明还提供上述的污泥脱水***的另一应用，采用上述污泥脱水***处理含水质量分率80～85％的污泥，包括以下步骤：Furthermore, the present invention also provides another application of the above-mentioned sludge dehydration system. Using the above-mentioned sludge dehydration system to process sludge with a water content of 80-85% includes the following steps:
S1：含水质量分率80～85％的污泥进入湿污泥料仓暂存后经污泥螺杆泵输送至污泥调理机与来自调理剂***中的药剂混合后进入带式脱水机，在高压带式机的压榨作用下完成脱水，带式脱水***出泥再经提升刮板输送机输送进入2#中间缓存仓；S1: The sludge with a water content of 80-85% enters the wet sludge silo for temporary storage and is transported to the sludge conditioner through the sludge screw pump. It is mixed with the agent from the conditioner system and then enters the belt dehydrator. Dehydration is completed under the squeezing action of the high-pressure belt machine, and the mud produced by the belt dehydration system is transported by the lifting scraper conveyor into the 2# intermediate buffer bin;
S2：来自2#中间缓存仓的污泥经螺旋进入低温干化***，除湿热泵对污泥采用热风循环冷凝除湿烘干，完成污泥脱水；脱水后得到一定含水率的污泥，再经提升刮板输送机进入干污泥料仓暂存后外运。S2: The sludge from the 2# intermediate buffer bin enters the low-temperature drying system through a spiral. The dehumidification heat pump uses hot air circulation, condensation, dehumidification and drying to complete the sludge dehydration. After dehydration, the sludge with a certain moisture content is obtained, and then it is upgraded The scraper conveyor enters the dry sludge silo for temporary storage before being transported out.
进一步的优选方案是，将带式脱水机排出的滤液送至污水井，将低温干化***排出的冷凝水送至污水井。A further preferred solution is to send the filtrate discharged from the belt dehydrator to the sewage well, and send the condensed water discharged from the low-temperature drying system to the sewage well.
进一步的优选方案是，在此应用中所述低温干化***，除湿热泵对污泥 采用热风循环冷凝除湿烘干，脱水后得到的污泥含水质量分率为50％-10％。所述带式脱水***出泥的含水质量分率为68％-72％，以利于低温干化***污泥切条成型。A further preferred solution is that in this application the low-temperature drying system and the dehumidification heat pump dehumidify the sludge Hot air circulation condensation, dehumidification and drying are used, and the water content of the sludge obtained after dehydration is 50%-10%. The water content of the sludge produced by the belt dehydration system is 68%-72%, which facilitates the cutting and forming of sludge from the low-temperature drying system.
与现有技术相比，本发明的有益效果在于：Compared with the prior art, the beneficial effects of the present invention are:
(1)本发明提供的污泥脱水***，包括离心泵、湿污泥料仓、污泥输送螺杆泵、一体化加药***、叠螺脱水机、1#中间缓存仓、调理剂***、污泥调理机、带式脱水机、2#中间缓存仓、低温干化***和干污泥料仓等，将叠螺脱水、带式脱水和低温干化脱水等技术有机结合，使其处于各自的工艺高效段，能有效提升污泥脱水处理效率并降低运营成本；(1) The sludge dehydration system provided by the present invention includes a centrifugal pump, a wet sludge silo, a sludge conveying screw pump, an integrated dosing system, a snail stacking dehydrator, a #1 intermediate buffer bin, a conditioning agent system, and a sludge conveying screw pump. Mud conditioner, belt dehydrator, 2# intermediate buffer bin, low temperature drying system and dry sludge silo, etc., organically combine the technologies of stacked snail dehydration, belt dehydration and low temperature drying and dehydration to make them in their respective The high-efficiency section of the process can effectively improve the efficiency of sludge dewatering and reduce operating costs;
(2)本发明提供的污泥脱水***，采用螺旋或开式叶轮离心泵输送浓缩污泥，解决了污泥输送过程中容易堵塞的问题；(2) The sludge dehydration system provided by the present invention uses a spiral or open impeller centrifugal pump to transport concentrated sludge, which solves the problem of easy blockage during sludge transport;
(3)本发明提供的污泥脱水***，为确保三种工艺衔接紧密，在工艺段之间均设置中间缓存料仓，解决了运行中设备处理能力不能较好匹配的问题；(3) The sludge dehydration system provided by the present invention, in order to ensure that the three processes are closely connected, is equipped with intermediate cache silos between process sections, which solves the problem of equipment processing capabilities not being well matched during operation;
(4)本发明提供的污泥脱水***的应用，为确保低温干化工艺段污泥切条成型机有利运行，可优选控制带式脱水机出泥含水质量分率为70％左右，解决了低温干化工艺段污泥切条成型不均匀的问题；(4) In the application of the sludge dehydration system provided by the present invention, in order to ensure the favorable operation of the sludge cutting and forming machine in the low-temperature drying process section, the water content of the sludge produced by the belt dehydrator can be preferably controlled to about 70%, which solves the problem The problem of uneven sludge cutting and shaping in the low-temperature drying process section;
(5)本发明提供的污泥脱水***，为确保污泥在脱水过程中的臭气能有效控制，对叠螺脱水机、带式脱水机、低温干化***、污泥料仓等设备均采取加罩或密闭后进行负压抽气，解决了污泥处理过程中臭气外溢的问题；(5) The sludge dehydration system provided by the present invention, in order to ensure that the odor of the sludge during the dehydration process can be effectively controlled, includes stacked snail dehydrators, belt dehydrators, low-temperature drying systems, sludge silos and other equipment. The use of negative pressure extraction after covering or sealing solves the problem of odor leakage during sludge treatment;
(6)本发明提供的污泥脱水***及其应用，能有效处理市政污泥，与传统单一的污泥脱水方式相比，本发明能显著提升***的操作灵活性，增强了工艺***对来泥含水率的适应性。(6) The sludge dehydration system and its application provided by the present invention can effectively treat municipal sludge. Compared with the traditional single sludge dehydration method, the present invention can significantly improve the operational flexibility of the system and enhance the future impact of the process system. Adaptability to mud moisture content.
附图说明Description of drawings
图1为本发明实施例的污泥脱水***示意图。 Figure 1 is a schematic diagram of a sludge dehydration system according to an embodiment of the present invention.
具体实施方式Detailed ways
下面结合具体实施例对本发明进行详细说明。以下实施例将有助于本领域的技术人员进一步理解本发明，但不以任何形式限制本发明。应当指出的是，对本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进。这些都属于本发明的保护范围。The present invention will be described in detail below with reference to specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.
实施例Example
参见如图1所示的一种污泥脱水***，包括离心泵、均质池、湿污泥料仓、螺杆泵、一体化加药***、叠螺脱水机、1#中间缓存仓、调理剂***、污泥调理机、带式脱水机、2#中间缓存仓、低温干化***和干污泥料仓等。See a sludge dehydration system shown in Figure 1, which includes a centrifugal pump, a homogenizing tank, a wet sludge silo, a screw pump, an integrated dosing system, a snail stacking dehydrator, a #1 intermediate buffer bin, and a conditioning agent system, sludge conditioner, belt dehydrator, 2# intermediate buffer bin, low-temperature drying system and dry sludge silo, etc.
一体化加药***经螺杆泵与叠螺脱水机连接，均质池的出口端经螺杆泵与叠螺脱水机的污泥进口端连接，叠螺脱水机的污泥出口端与1#中间缓存仓进口端连接，1#中间缓存仓出口端经螺旋输送机与污泥调理机的污泥进口端连接，湿污泥料仓的出口端经螺杆泵与污泥调理机的湿污泥入口端连接，自来水管线与调理剂***连接，调理剂***的调理剂出口端与污泥调理机的调理剂入口端连接，污泥调理机的污泥出口端与带式脱水机的污泥进口端连接，带式脱水机的污泥出口端经提升刮板输送机与2#中间缓存仓的污泥进口端连接，2#中间缓存仓的污泥出口端经螺旋输送机与低温干化***的污泥进口端连接，低温干化***的污泥出口端经提升刮板输送机与干污泥料仓的污泥入口端连接；叠螺脱水机的滤液出口端、带式脱水机的滤液出口端、以及低温干化***冷凝水排出端分别与污水井连接。The integrated dosing system is connected to the snail stacking dehydrator via a screw pump. The outlet end of the homogenization tank is connected to the sludge inlet end of the snail stacking dehydrator via a screw pump. The sludge outlet end of the snail stacking dehydrator is connected to the 1# intermediate buffer. The inlet end of the silo is connected, the outlet end of the 1# intermediate buffer silo is connected to the sludge inlet end of the sludge conditioner through a screw conveyor, and the outlet end of the wet sludge silo is connected to the wet sludge inlet end of the sludge conditioner through a screw pump. Connection, the tap water pipeline is connected to the conditioner system, the conditioner outlet end of the conditioner system is connected to the conditioner inlet end of the sludge conditioner, and the sludge outlet end of the sludge conditioner is connected to the sludge inlet end of the belt dehydrator. , the sludge outlet end of the belt dehydrator is connected to the sludge inlet end of the 2# intermediate buffer bin through a lifting scraper conveyor, and the sludge outlet end of the 2# intermediate buffer bin is connected to the sludge inlet of the low-temperature drying system through a screw conveyor. The sludge inlet end of the low-temperature drying system is connected to the sludge inlet end of the dry sludge silo through the lifting scraper conveyor; the filtrate outlet end of the stacked screw dehydrator and the filtrate outlet end of the belt dehydrator , and the condensed water discharge end of the low-temperature drying system are connected to the sewage well respectively.
本污泥脱水***在竖向布置上，叠螺脱水机布置在带式脱水机上层车间。带式脱水机配置有冲洗***，冲洗***用水为厂区回用水。低温干化***配置有循环冷却***，冷却水为厂区回用水。叠螺脱水机、带式脱水机、低温干化***、湿污泥料仓、以及干污泥料仓均设负压抽气密封罩，可进行负压抽气除臭。1#中间缓存仓及2#中间缓存仓的缓存容积均设计为与后续处理***有效衔接。 The sludge dehydration system is arranged vertically, and the snail stacking dehydrator is arranged in the upper workshop of the belt dehydrator. The belt dehydrator is equipped with a flushing system, and the water used in the flushing system is recycled water from the factory. The low-temperature drying system is equipped with a circulating cooling system, and the cooling water is recycled water from the factory area. The snail stacking dehydrator, belt dehydrator, low-temperature drying system, wet sludge silo, and dry sludge silo are all equipped with negative pressure air sealing covers, which can perform negative pressure air extraction and deodorization. The cache volumes of the 1# intermediate cache bin and 2# intermediate cache bin are designed to effectively connect with the subsequent processing system.
应用1、采用本发明的污泥脱水***处理含水质量分率98％的污泥，包括以下步骤：Application 1. The sludge dehydration system of the present invention is used to treat sludge with a water content of 98%, including the following steps:
S1：叠螺脱水***：来自浓缩池的含水质量分率98％左右的污泥，经螺旋离心泵或开式叶轮离心泵进入均质池，从均质池的出口端经螺杆泵进入叠螺脱水机；自来水与药剂(PAM，质量浓度0.1％，加药量质量分数为3‰～5‰，)经螺杆泵进入叠螺脱水机，污泥与药剂在叠螺脱水机中的混合箱内充分混合，混合后的物质在叠螺脱水机螺旋轴旋片的推动挤压下，得到含水质量分率约80％左右的污泥，进入1#中间缓存仓。将叠螺脱水机排出的滤液分别送至污水井。S1: Spiral dehydration system: The sludge from the concentration tank with a water content of about 98% enters the homogenization tank through a spiral centrifugal pump or an open impeller centrifugal pump, and enters the screw pump from the outlet end of the homogenization tank through a screw pump. Dehydrator; tap water and chemicals (PAM, mass concentration 0.1%, dosage mass fraction 3‰~5‰,) enter the snail-stacking dehydrator through the screw pump, and the sludge and reagents are in the mixing box in the snail-stacking dehydrator. After thorough mixing, the mixed material is pushed and squeezed by the spiral shaft and blade of the screw stacking dehydrator to obtain sludge with a water content of about 80%, and enters the 1# intermediate buffer bin. Send the filtrate discharged from the snail stacking dehydrator to the sewage well respectively.
S2：带式脱水***：1#中间缓存仓的含水质量分率80％左右的污泥，经螺旋输送机送至污泥调理机，来自调理剂***中的药剂(组合盐类，质量浓度20％-30％，加药量质量分数为1.5％)经隔膜计量泵进入污泥调理机，污泥与药剂混合后进入带式脱水机，在高压带式机的压榨作用下进行脱水，脱水后的污泥含水质量分率约70％左右，经提升刮板输送机进入2#中间缓存仓。将带式脱水机排出的滤液送至污水井。S2: Belt dehydration system: The sludge with a water content of about 80% in the 1# intermediate buffer bin is sent to the sludge conditioner via a screw conveyor. The chemicals (combined salts, mass concentration 20) from the conditioner system %-30%, the dosage mass fraction is 1.5%) and enters the sludge conditioner through the diaphragm metering pump. After the sludge is mixed with the chemicals, it enters the belt dehydrator and is dehydrated under the squeezing action of the high-pressure belt machine. After dehydration The water content of the sludge is about 70%, and it enters the 2# intermediate buffer bin via the lifting scraper conveyor. Send the filtrate discharged from the belt dehydrator to the sewage well.
S3：低温干化脱水***：2#中间缓存仓的含水质量分率70％污泥经螺旋输送进入低温干化***，除湿热泵对污泥采用热风循环冷凝除湿烘干(标准干燥回风温度为45～56℃，送风温度为60～75℃)，脱水后得到含水质量分率为约50％(出泥含水率可调)的污泥，再经提升刮板输送机进入干污泥料仓暂存后外运。将低温干化***排出的冷凝水送至污水井。S3: Low-temperature drying and dehydration system: The sludge with a water content of 70% in the 2# intermediate buffer bin is transported by the spiral into the low-temperature drying system. The dehumidification heat pump uses hot air circulation, condensation, dehumidification and drying for the sludge (the standard drying return air temperature is 45~56℃, air supply temperature is 60~75℃), after dehydration, the sludge with a water content of about 50% (the moisture content of the sludge is adjustable) is obtained, and then enters the dry sludge material through the lifting scraper conveyor Temporarily stored in warehouse and shipped out later. Send the condensed water discharged from the low-temperature drying system to the sewage well.
应用2、采用本发明的污泥脱水***处理含水质量分率80％～85％的污泥，包括以下步骤：Application 2. Use the sludge dehydration system of the present invention to treat sludge with a water content of 80% to 85%, including the following steps:
S1：带式脱水***：含水质量分率80％～85％的污泥进入湿污泥料仓暂存后经污泥螺杆泵输送至污泥调理机与来自调理剂***中的药剂(组合盐类，质量浓度20％-30％，加药量质量分数为1.5％)混合后进入带式脱水机，在高压带式机的压榨作用下完成脱水，脱水后的污泥含水质量分率约70％左右， 再经提升刮板输送机输送进入2#中间缓存仓。将带式脱水机排出的滤液送至污水井。S1: Belt dehydration system: sludge with a water content of 80% to 85% enters the wet sludge silo for temporary storage and is then transported to the sludge conditioner and the agent (combined salt) from the conditioner system through the sludge screw pump. Class, mass concentration 20%-30%, dosage mass fraction 1.5%) is mixed and enters the belt dehydrator. Dehydration is completed under the squeezing action of the high-pressure belt machine. The moisture content of the dehydrated sludge is about 70 %about, Then it is transported by the lifting scraper conveyor into the 2# intermediate buffer bin. Send the filtrate discharged from the belt dehydrator to the sewage well.
S2：低温干化脱水***：来自2#中间缓存仓的含水质量分率70％污泥经螺旋进入低温干化***，除湿热泵对污泥采用热风循环冷凝除湿烘干(标准干燥回风温度为45～56℃，送风温度为60～75℃)，完成污泥脱水。脱水后得到含水质量分率50％(出泥含水率可调)的污泥，再经提升刮板输送机进入干污泥料仓暂存后外运。将低温干化***排出的冷凝水送至污水井。S2: Low-temperature drying and dehydration system: The sludge with a water content of 70% from the 2# intermediate buffer bin enters the low-temperature drying system through a spiral. The dehumidification heat pump uses hot air circulation, condensation, dehumidification and drying for the sludge (the standard drying return air temperature is 45～56℃, supply air temperature is 60～75℃) to complete sludge dehydration. After dehydration, the sludge with a water content of 50% (the moisture content of the sludge is adjustable) is obtained, and then enters the dry sludge silo for temporary storage via a lifting scraper conveyor before being transported outside. Send the condensed water discharged from the low-temperature drying system to the sewage well.
以上对本发明的具体实施例进行了描述。需要理解的是，本发明并不局限于上述特定实施方式，本领域技术人员可以在权利要求的范围内做出各种变形或修改，这并不影响本发明的实质内容。 Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above. Those skilled in the art can make various variations or modifications within the scope of the claims, which does not affect the essence of the present invention.

Claims (12)

  1. 一种污泥脱水***，其特征在于，包括离心泵、均质池、湿污泥料仓、螺杆泵、一体化加药***、叠螺脱水机、1#中间缓存仓、调理剂***、污泥调理机、带式脱水机、2#中间缓存仓、低温干化***和干污泥料仓；一体化加药***经螺杆泵与叠螺脱水机连接，浓缩池污泥出口端经离心泵与均质池入口端连接，均质池的出口端经螺杆泵与叠螺脱水机的污泥进口端连接，叠螺脱水机的污泥出口端与1#中间缓存仓进口端连接，1#中间缓存仓出口端经螺旋输送机与污泥调理机的污泥进口端连接，湿污泥料仓的出口端经螺杆泵与污泥调理机的湿污泥入口端连接，自来水管线与调理剂***连接，调理剂***的调理剂出口端与污泥调理机的调理剂入口端连接，污泥调理机的污泥出口端与带式脱水机的污泥进口端连接，带式脱水机的污泥出口端经提升刮板输送机与2#中间缓存仓的污泥进口端连接，2#中间缓存仓的污泥出口端经螺旋输送机与低温干化***的污泥进口端连接，低温干化***的污泥出口端经提升刮板输送机与干污泥料仓的污泥入口端连接。A sludge dehydration system, which is characterized by including a centrifugal pump, a homogenizing tank, a wet sludge silo, a screw pump, an integrated dosing system, a snail stacking dehydrator, a #1 intermediate buffer bin, a conditioning agent system, and a sludge dewatering system. Sludge conditioner, belt dehydrator, 2# intermediate buffer bin, low-temperature drying system and dry sludge silo; the integrated dosing system is connected to the spiral screw dehydrator via a screw pump, and the sludge outlet end of the concentration tank is connected to a centrifugal pump It is connected to the inlet end of the homogenization pool. The outlet end of the homogenization pool is connected to the sludge inlet end of the snail stacking dehydrator through the screw pump. The sludge outlet end of the snail stacking dehydrator is connected to the inlet end of the 1# intermediate buffer bin. 1# The outlet end of the intermediate buffer bin is connected to the sludge inlet end of the sludge conditioner through a screw conveyor. The outlet end of the wet sludge bin is connected to the wet sludge inlet end of the sludge conditioner through a screw pump. The tap water pipeline is connected to the conditioner. System connection, the conditioner outlet of the conditioner system is connected to the conditioner inlet of the sludge conditioner, the sludge outlet of the sludge conditioner is connected to the sludge inlet of the belt dehydrator, and the sludge inlet of the belt dehydrator is connected. The sludge outlet end is connected to the sludge inlet end of the 2# intermediate buffer bin through a lifting scraper conveyor. The sludge outlet end of the 2# intermediate buffer bin is connected to the sludge inlet end of the low-temperature drying system through a screw conveyor. The low-temperature drying system The sludge outlet end of the chemical system is connected to the sludge inlet end of the dry sludge silo via a lifting scraper conveyor.
  2. 根据权利要求1所述的污泥脱水***，其特征在于，所述叠螺脱水机的滤液出口端、所述带式脱水机的滤液出口端、以及所述低温干化***冷凝水排出端分别与污水井入口端连接。The sludge dehydration system according to claim 1, characterized in that the filtrate outlet end of the snail stacking dehydrator, the filtrate outlet end of the belt dehydrator, and the condensed water discharge end of the low-temperature drying system are respectively Connected to the entrance of the sewage well.
  3. 根据权利要求1或2所述的污泥脱水***，其特征在于，所述离心泵为螺旋离心泵或开式叶轮离心泵。The sludge dehydration system according to claim 1 or 2, characterized in that the centrifugal pump is a spiral centrifugal pump or an open impeller centrifugal pump.
  4. 根据权利要求1-3中任一项所述的污泥脱水***，其特征在于，在竖向布置上，叠螺脱水机布置在带式脱水机车间的上层。The sludge dehydration system according to any one of claims 1 to 3, characterized in that, in a vertical arrangement, the screw stacking dehydrator is arranged on the upper level of the belt dewatering machine workshop.
  5. 根据权利要求1-4中任一项所述的污泥脱水***，其特征在于，所述带式脱水机配置有冲洗***及空压机***，冲洗***用水为厂区回用水；所述低温干化***配置有循环冷却***，冷却水水源为厂区回用水。The sludge dewatering system according to any one of claims 1 to 4, characterized in that the belt dehydrator is equipped with a flushing system and an air compressor system, and the water used in the flushing system is factory recycle water; the low-temperature dryer The chemical system is equipped with a circulating cooling system, and the cooling water source is factory reused water.
  6. 根据权利要求1-5中任一项所述的污泥脱水***，其特征在于，所述 叠螺脱水机、带式脱水机、低温干化***、湿污泥料仓、以及干污泥料仓均设置密封罩，所述密封罩连接负压抽气装置。The sludge dehydration system according to any one of claims 1 to 5, characterized in that: The snail stacking dehydrator, belt dehydrator, low-temperature drying system, wet sludge silo, and dry sludge silo are all equipped with sealing covers, and the sealing covers are connected to the negative pressure exhaust device.
  7. 根据权利要求1-6中任一项所述的污泥脱水***的应用，其特征在于，采用所述污泥脱水***处理含水质量分率99％-97％的污泥，包括以下步骤：The application of the sludge dehydration system according to any one of claims 1-6, characterized in that using the sludge dehydration system to process sludge with a water content of 99%-97% includes the following steps:
    S1：来自浓缩池的含水质量分率99％-97％的污泥进入均质池，从均质池的出口端经螺杆泵进入叠螺脱水机；自来水与药剂经螺杆泵进入叠螺脱水机，污泥与药剂在叠螺脱水机中的混合箱内充分混合，混合后的物质在叠螺脱水机螺旋轴旋片的推动挤压下，得到含水率约80％左右的污泥，进入1#中间缓存仓；S1: The sludge from the concentration tank with a water content of 99%-97% enters the homogenization tank, and enters the snail-stacking dehydrator from the outlet end of the homogenization tank through the screw pump; tap water and chemicals enter the snail-stacking dehydrator through the screw pump. , the sludge and chemicals are fully mixed in the mixing box in the snail stacking dehydrator. The mixed materials are pushed and squeezed by the spiral shaft of the snail stacking dehydrator to obtain sludge with a moisture content of about 80%, which enters 1 #Intermediate cache warehouse;
    S2：1#中间缓存仓的含水质量分率80％左右的污泥，经螺旋输送机送至污泥调理机，来自调理剂***中的药剂进入污泥调理机，污泥与药剂混合后进入带式脱水机，在高压带式机的压榨作用下进行脱水，带式脱水***出泥再经提升刮板输送机进入2#中间缓存仓；S2: The sludge with a water content of about 80% in the 1# intermediate buffer bin is sent to the sludge conditioner via a screw conveyor. The agent from the conditioner system enters the sludge conditioner, and the sludge is mixed with the agent. The belt dehydrator dehydrates under the squeezing action of the high-pressure belt machine. The mud produced by the belt dehydration system enters the 2# intermediate buffer bin through the lifting scraper conveyor;
    S3：2#中间缓存仓污泥经螺旋输送进入低温干化***，除湿热泵对污泥采用热风循环冷凝除湿烘干，脱水后得到一定含水率的污泥，再经提升刮板输送机进入干污泥料仓暂存后外运。S3: The sludge from the 2# intermediate buffer bin enters the low-temperature drying system through spiral conveying. The dehumidification heat pump uses hot air circulation, condensation, dehumidification and drying to dry the sludge. After dehydration, the sludge with a certain moisture content is obtained, and then enters the drying system through the lifting scraper conveyor. The sludge is temporarily stored in the silo and then shipped out.
  8. 根据权利要求1-7中任一项所述的污泥脱水***的应用，其特征在于，采用所述污泥脱水***处理含水质量分率80～85％的污泥，包括以下步骤：The application of the sludge dehydration system according to any one of claims 1 to 7, characterized in that using the sludge dehydration system to process sludge with a water content of 80 to 85% includes the following steps:
    S1：含水质量分率80～85％的污泥进入湿污泥料仓暂存后经污泥螺杆泵输送至污泥调理机与来自调理剂***中的药剂混合后进入带式脱水机，在高压带式机的压榨作用下完成脱水，带式脱水***出泥再经提升刮板输送机输送进入2#中间缓存仓；S1: The sludge with a water content of 80-85% enters the wet sludge silo for temporary storage and is transported to the sludge conditioner through the sludge screw pump. It is mixed with the agent from the conditioner system and then enters the belt dehydrator. Dehydration is completed under the squeezing action of the high-pressure belt machine, and the mud produced by the belt dehydration system is transported by the lifting scraper conveyor into the 2# intermediate buffer bin;
    S2：来自2#中间缓存仓的污泥经螺旋进入低温干化***，除湿热泵对污泥采用热风循环冷凝除湿烘干，完成污泥脱水；脱水后得到一定含水率的污泥，再经提升刮板输送机进入干污泥料仓暂存后外运。S2: The sludge from the 2# intermediate buffer bin enters the low-temperature drying system through a spiral. The dehumidification heat pump uses hot air circulation, condensation, dehumidification and drying to complete the sludge dehydration. After dehydration, the sludge with a certain moisture content is obtained, and then it is upgraded The scraper conveyor enters the dry sludge silo for temporary storage before being transported out.
  9. 根据权利要求7所述的污泥脱水***的应用，其特征在于，将叠螺脱 水机和带式脱水机排出的滤液分别送至污水井，将低温干化***排出的冷凝水送至污水井。The application of the sludge dewatering system according to claim 7, characterized in that the snails are removed from the The filtrate discharged from the water machine and the belt dehydrator is sent to the sewage well respectively, and the condensed water discharged from the low-temperature drying system is sent to the sewage well.
  10. 根据权利要求8所述的污泥脱水***的应用，其特征在于，将带式脱水机排出的滤液送至污水井，将低温干化***排出的冷凝水送至污水井。The application of the sludge dehydration system according to claim 8, characterized in that the filtrate discharged from the belt dehydrator is sent to the sewage well, and the condensed water discharged from the low-temperature drying system is sent to the sewage well.
  11. 根据权利要求7或8所述的污泥脱水***的应用，其特征在于，所述低温干化***，除湿热泵对污泥采用热风循环冷凝除湿烘干，脱水后得到的污泥含水质量分率在50％-10％之间。The application of the sludge dehydration system according to claim 7 or 8, characterized in that in the low-temperature drying system, the dehumidification heat pump adopts hot air circulation condensation, dehumidification and drying of the sludge, and the water content mass fraction of the sludge obtained after dehydration is Between 50%-10%.
  12. 根据权利要求7或8所述的污泥脱水***的应用，其特征在于，所述带式脱水***出泥的含水质量分率为68％-72％。 The application of the sludge dehydration system according to claim 7 or 8, characterized in that the water content of the sludge produced by the belt dehydration system is 68%-72%.
PCT/CN2023/112514 2022-08-15 2023-08-11 Sludge dewatering system and use thereof WO2024037444A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210973220.7A CN115304235A (en) 2022-08-15 2022-08-15 Sludge dewatering system and application thereof
CN202210973220.7 2022-08-15

Publications (1)

Publication Number Publication Date
WO2024037444A1 true WO2024037444A1 (en) 2024-02-22

Family

ID=83863148

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2023/112514 WO2024037444A1 (en) 2022-08-15 2023-08-11 Sludge dewatering system and use thereof

Country Status (2)

Country Link
CN (1) CN115304235A (en)
WO (1) WO2024037444A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115304235A (en) * 2022-08-15 2022-11-08 上海市政工程设计研究总院（集团）有限公司 Sludge dewatering system and application thereof

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105712606A (en) * 2016-04-26 2016-06-29 江苏康泰环保股份有限公司 Sludge dewatering and drying integrated device and sludge dewatering and drying method
CN109574460A (en) * 2018-12-03 2019-04-05 智造起源科技有限公司 A kind of Vehicular mud drying device
KR20190094003A (en) * 2018-02-02 2019-08-12 지에스건설 주식회사 Sludge treatment system and method
CN209442849U (en) * 2018-12-03 2019-09-27 智造起源科技有限公司 A kind of Vehicular mud drying device
CN111847824A (en) * 2020-08-25 2020-10-30 北控水务(中国)投资有限公司 Three-stage type dewatering and drying system and method for sludge in domestic sewage treatment plant
CN212610195U (en) * 2020-08-25 2021-02-26 北控水务(中国)投资有限公司 Sludge three-section type dehydration and drying system in domestic sewage treatment plant
CN214457569U (en) * 2021-01-07 2021-10-22 重庆市市政设计研究院有限公司 Sludge dewatering mummification processing system
CN115304235A (en) * 2022-08-15 2022-11-08 上海市政工程设计研究总院（集团）有限公司 Sludge dewatering system and application thereof
CN218372065U (en) * 2022-08-15 2023-01-24 上海市政工程设计研究总院（集团）有限公司 Sludge dewatering system

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105712606A (en) * 2016-04-26 2016-06-29 江苏康泰环保股份有限公司 Sludge dewatering and drying integrated device and sludge dewatering and drying method
KR20190094003A (en) * 2018-02-02 2019-08-12 지에스건설 주식회사 Sludge treatment system and method
CN109574460A (en) * 2018-12-03 2019-04-05 智造起源科技有限公司 A kind of Vehicular mud drying device
CN209442849U (en) * 2018-12-03 2019-09-27 智造起源科技有限公司 A kind of Vehicular mud drying device
CN111847824A (en) * 2020-08-25 2020-10-30 北控水务(中国)投资有限公司 Three-stage type dewatering and drying system and method for sludge in domestic sewage treatment plant
CN212610195U (en) * 2020-08-25 2021-02-26 北控水务(中国)投资有限公司 Sludge three-section type dehydration and drying system in domestic sewage treatment plant
CN214457569U (en) * 2021-01-07 2021-10-22 重庆市市政设计研究院有限公司 Sludge dewatering mummification processing system
CN115304235A (en) * 2022-08-15 2022-11-08 上海市政工程设计研究总院（集团）有限公司 Sludge dewatering system and application thereof
CN218372065U (en) * 2022-08-15 2023-01-24 上海市政工程设计研究总院（集团）有限公司 Sludge dewatering system

Also Published As

Publication number Publication date
CN115304235A (en) 2022-11-08

Similar Documents

Publication Publication Date Title
CN101691273B (en) Method for integration of thickening, dehydration and aerobic air drying of sewage sludge
CN204474516U (en) A kind of sludge drying system
CN110207484B (en) Material drying evaporation gas recycling system and method
WO2024037444A1 (en) Sludge dewatering system and use thereof
CN203487024U (en) Heat pump low temperature sludge drying treatment system
JP6639330B2 (en) Dehydration system and dehydration method
CN111847824A (en) Three-stage type dewatering and drying system and method for sludge in domestic sewage treatment plant
CN105060673A (en) Sealed low temperature sludge desiccation system
CN110078349B (en) Sludge low-temperature drying device and method
CN218372065U (en) Sludge dewatering system
CN110671923B (en) Vertical unpowered spiral stirring biological drying device and method
CN203048755U (en) Steam heat-cycling sludge drying system
CN110698030A (en) Sectional type continuous deep dehydration treatment process for livestock and poultry manure
WO2022095029A1 (en) Manure treatment device fully-sealed rapid waste-discharge system
JP6718400B2 (en) Dewatering device, dewatering system, and dewatering method
CN205668991U (en) A kind of multi-functional pressure filter
CN211770907U (en) Integrative equipment of sludge dewatering mummification
CN105174683A (en) Sludge reduction combined treatment system and method
CN105000778B (en) A kind of mud decrement processing system
CN206570192U (en) Sludge dewatering and drying device
CN212610195U (en) Sludge three-section type dehydration and drying system in domestic sewage treatment plant
CN213113030U (en) Low-temperature dried sludge treatment system for deep dehydration all-in-one machine
CN209507963U (en) A kind of compound type sludge drying and other treatment system
CN114105441A (en) Industrial sludge dewatering degree of depth mummification system
CN210885767U (en) Movable heat pump sludge drying system

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23854345

Country of ref document: EP

Kind code of ref document: A1