CN114477626B - Coking wastewater treatment system - Google Patents

Coking wastewater treatment system Download PDF

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Publication number
CN114477626B
CN114477626B CN202111663957.0A CN202111663957A CN114477626B CN 114477626 B CN114477626 B CN 114477626B CN 202111663957 A CN202111663957 A CN 202111663957A CN 114477626 B CN114477626 B CN 114477626B
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tank
water
treatment system
treatment
coking wastewater
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CN114477626A (en
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王延斌
邢菲翼
王付强
刘海峰
刘延安
王沛烔
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Xinxing Ductile Iron Pipes Co Ltd
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Xinxing Ductile Iron Pipes Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/24—Treatment of water, waste water, or sewage by flotation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5281—Installations for water purification using chemical agents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/001—Upstream control, i.e. monitoring for predictive control
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/003—Downstream control, i.e. outlet monitoring, e.g. to check the treating agents, such as halogens or ozone, leaving the process
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/05—Conductivity or salinity
    • C02F2209/055—Hardness
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/11—Turbidity
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/14—NH3-N
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
    • 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
    • C02F2303/24—Separation of coarse particles, e.g. by using sieves or screens
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/30—Aerobic and anaerobic processes
    • C02F3/302—Nitrification and denitrification treatment

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Physical Water Treatments (AREA)

Abstract

The invention relates to a coking wastewater treatment system, which belongs to the technical field of wastewater treatment and comprises a pretreatment system, a biochemical treatment system, a three-stage treatment system and a deep treatment system which are sequentially connected; and the coking wastewater is subjected to pretreatment, then is subjected to biochemical treatment, tertiary treatment and advanced treatment in sequence, and the treated water is used as the supplementing water of the open-type circulating cooling water system. According to the invention, multistage treatment is carried out on coking wastewater and production domestic wastewater, so that the obtained effluent reaches the water supplementing standard of an open-type circulating cooling water system in GB/T19923-2005 industrial wastewater quality for urban wastewater recycling, and meanwhile, the phenomenon of unqualified discharged water quality caused by coking wastewater quality fluctuation is avoided.

Description

Coking wastewater treatment system
Technical Field
The invention relates to a coking wastewater treatment system, and belongs to the technical field of wastewater treatment.
Background
The coking wastewater is ammonia distillation wastewater generated by a coal gas purification ammonia distillation unit and coking process section circulating water sewage, wherein the wastewater collected by the ammonia distillation unit comprises residual ammonia water, coal gas condensate, final cooling sewage, crude benzene separation water and the like. The coking wastewater contains a large amount of macromolecular refractory substances, has poor biodegradability, and is typical toxic refractory organic wastewater. The coking wastewater also comprises production domestic sewage, and is mixed wastewater.
At present, the traditional coking wastewater treatment method mainly combines pretreatment with biochemical treatment, and most of the traditional coking wastewater treatment methods adopt an aerobic biological treatment method, but the conventional biological method is used for treating the coking wastewater, the COD value of effluent is 150-200 mg/L, and the discharge requirement is difficult to reach; if the water quality fluctuates, the treatment effect is poorer, and accidents are easy to cause.
Along with the continuous improvement of environmental protection requirements in China, an effective process system is needed for solving the problems of large coking wastewater quantity, difficult treatment and the like, and the purposes of saving water and preventing unqualified discharged water caused by water quality fluctuation are achieved while the discharged water quality is ensured.
Disclosure of Invention
The invention aims to provide a coking wastewater treatment system, which is used for simultaneously treating coking wastewater and production domestic sewage, wherein the treated water quality meets the national standard of the supplementing water of an open-type circulating cooling water system, and meanwhile, the phenomenon of unqualified discharged water quality caused by the fluctuation of the water quality of the coking wastewater is avoided.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
a coking wastewater treatment system comprises a pretreatment system, a biochemical treatment system, a three-stage treatment system and a deep treatment system which are connected in sequence; and the coking wastewater is subjected to pretreatment, then is subjected to biochemical treatment, tertiary treatment and advanced treatment in sequence, and the treated water is used as the supplementing water of the open-type circulating cooling water system.
The technical scheme of the invention is further improved as follows: the pretreatment system comprises a lifting pump pool, an oil separation sedimentation tank and an air floatation tank which are sequentially communicated, wherein a grid canal is arranged at the water inlet of the lifting pump pool, and the grid canal and the lifting pump pool are of a combined reinforced concrete structure.
The technical scheme of the invention is further improved as follows: coagulant and coagulant aid are added into the floatation tank.
The technical scheme of the invention is further improved as follows: the biochemical treatment system comprises an adjusting tank, a pre-biochemical tank, a primary AO tank, a secondary sedimentation tank and a secondary AO tank which are sequentially communicated.
The technical scheme of the invention is further improved as follows: an accident pool is further arranged between the pretreatment system and the regulating pool, and when the quality of the incoming water is deteriorated, the outgoing water of the pretreatment system enters the regulating pool after being treated in the accident pool.
The technical scheme of the invention is further improved as follows: and a carbon source adding device is arranged in the secondary AO pool.
The technical scheme of the invention is further improved as follows: the three-stage treatment system comprises a coagulation reaction tank, a coagulation sedimentation tank, a catalytic oxidation equipment room and a BAF tank which are sequentially communicated, wherein a buffer water distribution area, a supporting layer, a filter material layer, a water outlet area and a water outlet groove are arranged in the BAF tank.
The technical scheme of the invention is further improved as follows: the advanced treatment system comprises a membrane treatment water collecting tank, a high-efficiency sedimentation tank, a multi-medium filter, a resin adsorption device, an ultrafiltration unit, a primary reverse osmosis system, a secondary reverse osmosis system and a concentrated water tank which are sequentially communicated, wherein the primary reverse osmosis system and the secondary reverse osmosis system are communicated with the clean water tank.
The technical scheme of the invention is further improved as follows: the resin adsorption device adopts DJM resin for adsorption.
By adopting the technical scheme, the invention has the following technical effects:
according to the invention, multistage treatment is carried out on coking wastewater and production domestic wastewater, so that the obtained effluent reaches the water supplementing standard of an open-type circulating cooling water system in GB/T19923-2005 industrial wastewater quality for urban wastewater recycling, and meanwhile, the phenomenon of unqualified discharged water quality caused by coking wastewater quality fluctuation is avoided.
According to the invention, the accident pool and the regulating pool are adopted, when the water quality of the incoming water is deteriorated, the water discharged from the air floatation pool enters the accident pool for treatment, and domestic sewage can be added for regulation, so that the water quality change of the raw water or the serious water quality change caused by accidents can be effectively prevented, the impact on a wastewater treatment system is avoided, the operation of the wastewater treatment system is more stable, and the impact resistance is strong.
The invention adopts a treatment mode of combining a multi-medium filter, resin adsorption, ultrafiltration and secondary reverse osmosis, can effectively treat a plurality of harmful metal ions and harmful substances which cannot be biochemically treated in the wastewater, and economically and effectively realizes the advanced treatment of the coking wastewater.
Drawings
Fig. 1 is a process flow diagram of the present invention.
Detailed Description
The invention is further described in detail below with reference to the attached drawings and specific examples:
a coking wastewater treatment system is shown in figure 1, and comprises a lifting pump tank, an oil removal sedimentation tank, an air floatation tank, a regulating tank, a pre-biochemical tank, a primary AO tank, a secondary sedimentation tank, a secondary AO tank, a coagulation reaction tank, a coagulation sedimentation tank, a catalytic oxidation equipment room, a BAF tank, a membrane treatment water collecting tank, a high-efficiency sedimentation tank, a multi-medium filter, a resin adsorption device, an ultrafiltration unit, a primary reverse osmosis system, a secondary reverse osmosis system and a concentrated water tank which are sequentially communicated, wherein the primary reverse osmosis system and the secondary reverse osmosis system are communicated with a clean water tank; an accident pool is further arranged between the air floatation pool and the regulating pool, and when the water quality of the incoming water is deteriorated, the water discharged from the air floatation pool enters the regulating pool after being treated in the accident pool. The clean water tank water obtained after the coking wastewater is treated accords with the water supplementing standard of an open type circulating cooling water system in GB/T19923-2005 industrial water quality for urban wastewater recycling, and can be used as the water supplementing of the open type circulating cooling water system.
A grid canal is arranged at the water inlet of the lifting pump pool, and the grid canal and the lifting pump pool are combined reinforced concrete structures; the lifting pump pool has the function of lifting water to a certain height, so that the burial depth of a subsequent structure is reduced; an ultrasonic liquid level meter is arranged in the lifting pump pool and is used for controlling the operation of the wastewater lifting pump.
The oil separation sedimentation tank is used for removing suspended matters, heavy oil and part of floating oil in the wastewater so as to reduce the oil content and ensure the stable and normal operation of a subsequent biochemical system. Considering that the temperature is lower in winter, a steam pipe is arranged in the mud bucket of the oil separation sedimentation tank, so that the heavy oil can be discharged.
Coagulant and coagulant aid are added into the air floatation tank, so that light oil and emulsified oil in the wastewater are further removed, and the influence on a subsequent biochemical treatment system is reduced. The scum and floating oil generated by the air floatation are pushed to a sludge discharge pipe groove by a mud scraper and discharged into a scum pool.
The first-stage AO pool is divided into two pools, the pool A is an anoxic section and is positioned in front of the pool O, and NO in the mixed liquid which flows back is mainly utilized by denitrifying bacteria in the pool 3 -N and NO 2 Conversion of-N to N 2 Simultaneously removing part of carbon-containing organic matters in the inflow water; the O pool is an aerobic section and mainly carries out nitration reaction and degradation of carbon-containing organic matters. In order to achieve the effect of fully mixing the wastewater in the anoxic tank, the tank A is provided with a submerged impeller for stirring; the O pool adopts blast aeration, the aeration head adopts a rotary mixing aerator with higher oxygen transfer efficiency and scaling resistance, and air sent by a blast blower is blown into the aerobic pool to provide oxygen for microorganisms; in order to inhibit the generation of foam in the aeration tank, defoaming water pipes are arranged along the surface of the partition wall of the aeration tank. And (3) the mixed liquid in the water outlet part of the aerobic tank flows back to the front end of the tank A by a pump. In order to supplement the alkalinity consumed in the nitration reaction process, an alkali adding device is arranged in the dosing chamber. And a small amount of phosphorus salt is properly added according to biological nutrition requirements.
The A tank of the two-stage AO tank is provided with a filler so that the sludge quantity in the tank meets the requirement; the secondary O pool adopts blast aeration to further remove unoxidized organic matters in the secondary A pool, and is also provided with a carbon source adding device for supplementing carbon sources required in the denitrification reaction process.
Ozone is adopted between the catalytic oxidation devices for treatment so as to remove CODcr and improve the biodegradability of the wastewater. The BAF tank is internally provided with a buffer water distribution area, a supporting layer, a filter material layer, a water outlet area and a water outlet groove, and is filled with ceramsite filter materials, and the filler has the advantages of large specific surface, high porosity, strong dirt interception capability, high filtering speed, long service life, less back flushing water consumption, difficult hardening, difficult weathering and the like, and does not contain harmful substances to human bodies. Sodium hydroxide solution, lime, PAM and PAC are added into the efficient sedimentation tank so as to reduce the hardness in water and a small amount of oil slick. The resin adsorption device adopts DJM resin for adsorption, and adsorbs harmful metal ions and other substances in water, thereby having important significance for improving water quality.
The lifting pump pool, the oil separation sedimentation pool and the air floatation pool are sequentially communicated to form a pretreatment system; the regulating tank, the pre-biochemical tank, the primary AO tank, the secondary sedimentation tank and the secondary AO tank are sequentially communicated to form a biochemical treatment system; the coagulation reaction tank, the coagulation sedimentation tank, the catalytic oxidation equipment room and the BAF tank are sequentially communicated to form a three-stage treatment system; the membrane treatment water collecting tank, the high-efficiency sedimentation tank, the multi-medium filter, the resin adsorption device, the ultrafiltration unit, the primary reverse osmosis system, the secondary reverse osmosis system and the concentrated water tank are sequentially communicated to form an advanced treatment system.
The quality of the coking wastewater before treatment is shown in the following table 1:
the water quality of the treated effluent is shown in the following Table 2:
as can be seen from the comparison of tables 1 and 2, the water quality is greatly improved.

Claims (4)

1. A coking wastewater treatment system, characterized in that: comprises a pretreatment system, a biochemical treatment system, a three-stage treatment system and a deep treatment system which are connected in sequence; the coking wastewater is subjected to pretreatment and then is subjected to biochemical treatment, tertiary treatment and advanced treatment in sequence, and the treated water is used as makeup water of an open-type circulating cooling water system;
the pretreatment system comprises a lifting pump tank, an oil separation sedimentation tank and an air floatation tank which are sequentially communicated, wherein a steam pipe is arranged in a mud bucket of the oil separation sedimentation tank, a grid canal is arranged at a water inlet of the lifting pump tank, and the grid canal and the lifting pump tank are combined reinforced concrete structures; the biochemical treatment system comprises an adjusting tank, a pre-biochemical tank, a primary AO tank, a secondary sedimentation tank and a secondary AO tank which are sequentially communicated; an accident pool is arranged between the pretreatment system and the regulating pool, and when the quality of the incoming water is deteriorated, the outgoing water of the pretreatment system enters the regulating pool after being treated in the accident pool; the three-stage treatment system comprises a coagulation reaction tank, a coagulation sedimentation tank, a catalytic oxidation equipment room and a BAF tank which are sequentially communicated, wherein a buffer water distribution area, a supporting layer, a filter material layer, a water outlet area and a water outlet groove are arranged in the BAF tank; the advanced treatment system comprises a membrane treatment water collecting tank, a high-efficiency sedimentation tank, a multi-medium filter, a resin adsorption device, an ultrafiltration unit, a primary reverse osmosis system, a secondary reverse osmosis system and a concentrated water tank which are sequentially communicated, wherein the primary reverse osmosis system and the secondary reverse osmosis system are communicated with the clean water tank.
2. A coking wastewater treatment system according to claim 1 in which: coagulant and coagulant aid are added into the floatation tank.
3. A coking wastewater treatment system according to claim 1 in which: and a carbon source adding device is arranged in the secondary AO pool.
4. A coking wastewater treatment system according to claim 1 in which: the resin adsorption device adopts DJM resin for adsorption.
CN202111663957.0A 2021-12-31 2021-12-31 Coking wastewater treatment system Active CN114477626B (en)

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Application Number Priority Date Filing Date Title
CN202111663957.0A CN114477626B (en) 2021-12-31 2021-12-31 Coking wastewater treatment system

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CN202111663957.0A CN114477626B (en) 2021-12-31 2021-12-31 Coking wastewater treatment system

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CN114477626B true CN114477626B (en) 2023-10-27

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100838846B1 (en) * 2007-02-23 2008-06-17 주식회사 포스코건설 Method for treating recycle water of wastewater treatment
CN102167477A (en) * 2011-03-17 2011-08-31 开滦能源化工股份有限公司 Recycle system and recycle method of coked wastewater
CN102718363A (en) * 2012-06-21 2012-10-10 浙江晶泉水处理设备有限公司 Coking wastewater comprehensive treatment method and system thereof
CN205874139U (en) * 2016-06-30 2017-01-11 神华集团有限责任公司 Coking wastewater treatment system
RU2654757C1 (en) * 2017-05-24 2018-05-22 федеральное государственное бюджетное образовательное учреждение высшего образования "Пермский национальный исследовательский политехнический университет" Wastewater treatment system
CN109231680A (en) * 2018-10-17 2019-01-18 山西金承环境工程有限公司 A kind of in line processing system of coking wastewater
CN209652079U (en) * 2018-12-17 2019-11-19 北京航天环境工程有限公司 A kind of pretreatment system of anthraquinone dyes production waste water

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100838846B1 (en) * 2007-02-23 2008-06-17 주식회사 포스코건설 Method for treating recycle water of wastewater treatment
CN102167477A (en) * 2011-03-17 2011-08-31 开滦能源化工股份有限公司 Recycle system and recycle method of coked wastewater
CN102718363A (en) * 2012-06-21 2012-10-10 浙江晶泉水处理设备有限公司 Coking wastewater comprehensive treatment method and system thereof
CN205874139U (en) * 2016-06-30 2017-01-11 神华集团有限责任公司 Coking wastewater treatment system
RU2654757C1 (en) * 2017-05-24 2018-05-22 федеральное государственное бюджетное образовательное учреждение высшего образования "Пермский национальный исследовательский политехнический университет" Wastewater treatment system
CN109231680A (en) * 2018-10-17 2019-01-18 山西金承环境工程有限公司 A kind of in line processing system of coking wastewater
CN209652079U (en) * 2018-12-17 2019-11-19 北京航天环境工程有限公司 A kind of pretreatment system of anthraquinone dyes production waste water

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