CN112745008A - River channel sludge dewatering treatment system and sludge treatment method - Google Patents
River channel sludge dewatering treatment system and sludge treatment method Download PDFInfo
- Publication number
- CN112745008A CN112745008A CN202011278175.0A CN202011278175A CN112745008A CN 112745008 A CN112745008 A CN 112745008A CN 202011278175 A CN202011278175 A CN 202011278175A CN 112745008 A CN112745008 A CN 112745008A
- Authority
- CN
- China
- Prior art keywords
- sludge
- silt
- pipeline
- pipe
- conveying
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Images
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
- C02F11/14—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
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
- E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
- E02F3/92—Digging elements, e.g. suction heads
- E02F3/9256—Active suction heads; Suction heads with cutting elements, i.e. the cutting elements are mounted within the housing of the suction head
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/28—Dredgers or soil-shifting machines for special purposes for cleaning watercourses or other ways
-
- 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
- C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Civil Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a river sludge dewatering treatment system which comprises a sludge suction pipeline, a sludge suction conveying pump, a sludge conveying pipeline and a sludge storage and drainage bag which are sequentially arranged, wherein a drainage pipe or a drainage ditch is arranged at the periphery of the sludge storage and drainage bag, a flocculating agent adding pipe is connected to the sludge conveying pipeline, and the flocculating agent adding pipe is connected with a flocculating agent storage tank through a flocculating agent adding pump. Starting the silt suction delivery pump, pass through silt suction pipeline with the silt of river course bottom through silt suction delivery pump, silt delivery pipeline, flocculating agent conveyer pipe and silt agitator fill silt in the silt storage drainage bag, carry silt in continuously storing the drainage bag to silt through silt suction delivery pump and silt delivery pipeline, make the pressure in silt storage drainage bag increase, most moisture in the silt is arranged away under highly compressed effect in the silt storage drainage bag. The system and the treatment method are simple, and the sludge treatment cost is low.
Description
Technical Field
The invention relates to the technical field of environmental management systems, in particular to a river sludge dewatering treatment system and a sludge treatment method.
Background
With the rapid development of society, the environmental pollution problem is increasingly serious, the municipal sewage treatment engineering is correspondingly developed, and the total amount of byproduct sludge in the sewage treatment process is rapidly increased. With the development of various enterprises in cities, the sludge in urban riverways has very complex components, contains abundant organic matters, N, P, K and other trace nutrient elements necessary for plant growth, and also contains refractory organic matters, heavy metals, pathogenic microorganisms, parasitic ova and the like. The sludge is deposited in urban river channels for a long time and is easy to cause more serious secondary pollution to the environment.
For years, because of the weak environmental awareness of people, the residues of industrial garbage, urban and rural domestic sewage and chemical fertilizer and pesticide in agricultural production are directly discharged into lakes and rivers after being slightly treated or not treated at all, so that the water body is seriously polluted. Relevant data show that seven water systems in China are polluted to different degrees, wherein the water systems of Liaohe river, Haihe river and Huaihe river are the most serious, and about 80% of main large freshwater lakes in China are polluted, wherein the major lakes are the nido lake, the Dian lake, the south-four lake and the Taihu lake. The urban water system closely related to the life of people is a scenic spot led by the city and a good place for people to rest and enjoy the cool after eating tea, and the contents of the wind and light, sewage crossflow, heavy metals, eutrophication and other harmful substances far exceed the allowable value so as to cause great threat to the urban environment and the life health of people. How to comprehensively treat the polluted water system and establish a water-saving and antifouling society is an important subject before people. Experience in treating polluted water systems at home and abroad shows that under the condition that the external pollution source is basically controlled, the internal pollution source-polluted bottom mud must be thoroughly removed, and a water body system is restored and rebuilt, so that an ideal treatment effect can be achieved.
Therefore, the environment-friendly dredging technology is developed and is an edge engineering technology crossing hydraulic engineering, environmental engineering and dredging engineering. The method utilizes a mechanical dredging method to remove polluted bottom mud in rivers, lakes and reservoirs, and has little influence on the environment and surrounding water bodies in the processes of dredging and transporting the mud and the dredging process. Environmental protection dredging is more and more emphasized by the industry, and research results of main links such as sediment stirring, diffusion, secondary pollution, accurate dredging, dredged soil treatment and the like are continuously developed.
The existing method for treating the polluted bottom mud comprises the following steps: with the increasing application of environmental-friendly dredging engineering in polluted river and lake treatment, how to treat the removed sludge becomes a great obstacle for the implementation of many dredging engineering. At present, the following three methods are generally used for treating the dredging bottom mud:
(1) natural stacking and airing method.
The dredger discharges the bottom mud into the built storage yard through the mud discharge pipeline directly, and the water vapor in the bottom mud is evaporated by illumination to solidify the bottom mud. The land yard required by the construction process occupies a large area, the land yard occupies a long period, and the construction process is only suitable for suburbs and other lands with large-area idle wastelands available for a long time, and the treated bottom mud is generally used for greening and planting.
(2) A dewatering and volume reducing method for a soil engineering pipe bag.
Namely, the agent is pumped by a dosing preparation station, is fully mixed with the mud slurry in the mud discharging pipe, and is filled into the soil engineering pipe bag for dehydration and consolidation. The construction period of the process is the same as that of conventional dredging, the process has no influence on the surrounding environment basically, the process is suitable for urban central zones with short land resources, and the recycling degree of the treated sediment is higher.
(3) Mechanical consolidation and dehydration.
The dredged sediment is discharged into a mud pond through a sediment discharge pipeline by a dredger, and the mud in the mud pond is fully mixed with a certain proportion of medicament and then pumped into mechanical consolidation integrated equipment for continuous squeezing, so that the mud is dehydrated to form soil blocks with lower water content. The process has the advantages of small occupied area, high productivity influenced by mechanical dewatering and consolidating equipment, suitability for cities with short land resources, and capability of using the treated bottom mud as engineering soil.
Therefore, through comparison of the two schemes, although the consolidation time of the sludge with the same water content is longer than that of the second scheme, the first scheme can also meet the engineering requirement, and the other aspects are better than the second scheme, so that the geotechnical pipe bag construction process is the best choice for treating the sludge.
The traditional river channel dredging method is characterized in that sludge deposited at the river bottom is blown and stirred into a turbid water shape by mechanical equipment and flows away along with river water, so that the dredging function is achieved, and the cleaned sludge is solidified, dehydrated, stabilized, dried or incinerated. Patent document CN106565072A discloses a sludge treatment method, which comprises: s1, the sludge is sucked into the sludge suction device by the sludge suction device; s2, conveying the sludge in the sludge suction device to a treatment device through a pipeline; s3, screening out impurities in the sludge into sewage by using a vibrating screen of the treatment equipment; s4, the concentration device of the treatment equipment flocculates the sewage to change the sewage into sludge; s5, dehydrating the sludge by a dehydrating device of the treatment equipment to change the sludge into dry sludge. The sludge treatment method is characterized in that the sludge is directly salvaged out of the river channel through the sludge suction device, and the sludge is flocculated and dehydrated through the treatment equipment, so that the sludge is changed into dry sludge, the transportation is convenient, and the subsequent utilization is convenient.
Patent document CN105859068A discloses a sludge treatment process, which comprises the following steps: 1) removing impurities: filtering and removing garbage in the sludge by using a multi-stage grid; 2) pretreatment: pretreating sludge by using a third-stage sludge sedimentation tank to obtain sludge in the first, second and third-stage sludge sedimentation tanks, sludge slurry body and supernatant liquid after sedimentation in the third-stage sludge sedimentation tank; 3) curing treatment: respectively adopting mixing solidification and dehydration solidification methods to dehydrate and solidify the sludge and sludge slurry bodies in the first, second and third sludge sedimentation tanks to obtain sludge solidified soil A, B; 4) stacking and aging: and (4) transporting the sludge solidified soil A, B to a temporary storage yard, and aging for 3-7 days to finish the treatment. The sludge treatment process can simultaneously treat the sludge with larger particles, low water content and fine particles, and the sludge body with organic matters and high water content, and is particularly suitable for being applied to the river sludge with complex components, wide particle distribution and large water content difference.
However, the above method only performs physical dehydration treatment on the sludge in the urban river, so that heavy metals and a large amount of harmful microorganisms in the sludge are rather enriched in the treated dry sludge, which is not beneficial to subsequent resource recycling, and if the dry sludge is stacked for treatment, secondary pollution is also caused to the environment.
With the intensive research on the urban river sludge, more and more sludge treatment processes adopt chemical treatment agents for improving the resource utilization rate of the river sludge. Patent document CN104058568A discloses a method for treating sludge, comprising: (1) conveying the slurry sludge into a slurry collecting pool, filtering the slurry sludge flowing into the slurry collecting pool in the slurry collecting pool, cleaning the garbage with the diameter of more than 3mm out of the slurry collecting pool by a fur fishing machine, and fully stirring the filtered slurry sludge in the slurry collecting pool; (2) adding polymeric alumina and water, (3) adding polyacrylamide and water, (4) conveying the fully stirred slurry sludge obtained in the conditioning tank II into a filter press through a screw pump, and (5) draining the pressure filtered water after the filter press is dehydrated to form a sludge cake; (6) the cake is delivered by the conveyer belt. The treatment method has the advantages of good dehydration effect, high treatment efficiency and low treatment cost, and is favorable for large-scale popularization and utilization. However, the treatment method cannot meet the treatment requirement of urban river sludge with complex components.
The river channel sludge treatment method and the river channel sludge treatment device have the defects of complex sludge treatment process, high sludge treatment cost, large occupied area, long treatment period and the like.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a river sludge dewatering treatment system which is simple in system structure, low in sludge treatment cost, short in treatment period and small in occupied area.
In order to achieve the purpose, the technical scheme of the invention is to provide a river sludge dewatering treatment system, which comprises a sludge suction pipeline, a sludge suction and conveying pump, a sludge conveying pipeline and a sludge storage and drainage bag which are sequentially arranged, wherein a drainage pipe or a drainage ditch is arranged at the periphery of the sludge storage and drainage bag, a flocculant adding pipe is connected onto the sludge conveying pipeline, the flocculant adding pipe is arranged on a bracket and connected with a flocculant storage tank, the flocculant adding pipe is connected to the sludge conveying pipeline close to a sludge output port of the sludge suction and conveying pump, and a sludge stirrer is connected to one side of the sludge conveying pipeline in the forward conveying direction in series, and the sludge stirrer is connected to the other side of the sludge conveying pipeline in the forward.
Wherein, the flocculating agent adds union coupling and is close to near the silt output port of silt suction delivery pump at silt pipeline, be in order to facilitate the mixing time of extension flocculating agent and silt, accelerate the dehydration process of silt, just with the concentrated installation of equipment, concentrate the debugging, silt pipeline is connected with the silt agitator in the silt forward direction of delivery one side series connection that is connected with the flocculating agent and adds the pipe, be in order to facilitate the intensive mixing between flocculating agent and the silt, make the flocculating agent mix in silt pipeline evenly.
In order to facilitate the turbulent flow of the fluid formed by the sludge in the sludge conveying pipeline and form uniform mixing of the flocculating agent and the sludge through the turbulent flow of the fluid, the sludge stirrer further preferably comprises a blade arranged inside the pipeline, wherein the blade is a blade arranged on the central shaft and/or a blade arranged on the inner wall of the pipeline.
In order to facilitate the formation of fluid turbulence in the sludge conveying pipeline by the sludge, and the uniform mixing of the flocculating agent and the sludge is formed by the fluid turbulence, a further preferable technical scheme is that the blades and the axis of the central shaft and/or the inner wall form an included angle of 30-45 degrees along the flow direction of the sludge.
In order to facilitate the sludge to form fluid turbulence in the sludge conveying pipeline, a flocculating agent is formed to be uniformly mixed with the sludge through the fluid turbulence, and further, the sludge conveying pipeline between the sludge stirrer and the sludge storage and drainage bag is provided with a plurality of sections of square wave pulse type folding pipes which are connected by right-angle bends.
In order to facilitate the sludge in the sludge conveying pipeline to be conveyed to a plurality of sludge storage and drainage bags at the same time, a further preferable technical scheme is that a plurality of sludge output branch pipelines are arranged in parallel on the straight pipelines of the sludge conveying pipeline arranged at the rear part of the square wave pulse type folding pipe.
In order to facilitate the control of the start and the stop of the sludge conveying from the sludge conveying pipeline to the sludge storage and drainage bag and the size of the conveying flow, and the control of the addition amount and the addition time of the flocculating agent to the sludge conveying pipeline, the preferable technical scheme is that valves are respectively arranged on the straight pipeline of the sludge conveying pipeline, the sludge output branch pipeline, one side of the sludge stirrer feeding end and the flocculating agent adding pipe.
In order to facilitate accurate control and detection of the time for adding the flocculating agent to the sludge conveying pipeline, a flow meter is further connected to the flocculating agent adding pipe, and a valve arranged on the flocculating agent adding pipe is an electromagnetic proportional valve.
In order to facilitate the water in the sludge to be discharged and squeezed out the sludge storage and drainage bag, and simultaneously, in order to reduce the area occupied in the sludge treatment process, the sludge storage and drainage bag is bulged under the action of external sludge conveying pressure and is piled up to the upper part of the ground.
The invention aims to overcome the defects in the prior art and also provides a river sludge dewatering treatment method which is simple in system and method, low in sludge treatment cost, short in treatment period and small in occupied area.
In order to achieve the purpose, the technical scheme of the invention also provides a river sludge dewatering treatment method, which comprises the following treatment steps:
s1: one end of a sludge suction pipeline is conveyed into sludge at the bottom of the river channel, and the other end of the sludge suction pipeline is connected with a sludge inlet end of a sludge suction conveying pump;
s2: connecting one end of a sludge conveying pipeline with a sludge outlet end of a sludge pumping and conveying pump;
s3: a sludge stirrer is connected in series on the sludge conveying pipeline, the sludge conveying pipeline between the sludge suction conveying pump and the sludge stirrer is connected with one end of a flocculating agent conveying pipe through a three-way pipe connector, and the other end of the flocculating agent conveying pipe is connected with a flocculating agent storage tank arranged on the bracket;
s4: connecting the other end of the sludge conveying pipeline with a sludge storage and drainage bag through a flange connecting piece;
s5: starting a sludge pumping and conveying pump, filling sludge at the bottom of a river channel into a sludge storage and drainage bag through a sludge pumping pipeline, a sludge pumping and conveying pump, a sludge conveying pipeline, a flocculating agent conveying pipe and a sludge stirrer by the sludge pumping and conveying pump, and continuously conveying the sludge into the sludge storage and drainage bag through the sludge pumping and conveying pump and the sludge conveying pipeline, so that the pressure in the sludge storage and drainage bag is increased, and most of water in the sludge is squeezed out by the sludge in the sludge storage and drainage bag under the action of high pressure;
s6: the sludge storing and draining bag is a water permeable filtering bag, and river water discharged from the sludge storing and draining bag flows back to the river channel through a drainage ditch or a drainage pipe.
In order to simplify the installation and debugging process of the equipment, reduce the installation and debugging cost of the equipment and simultaneously facilitate the control of the conveying speed, the adding amount and the adding time of the flocculating agent, the preferable technical scheme is that a sludge suction conveying pump, a sludge conveying pipeline, a flocculating agent conveying pipe, a sludge stirrer and a sludge storage and drainage bag are all arranged on the ground, and a flocculating agent storage tank is arranged on a bracket higher than the ground, so that the flocculating agent in the flocculating agent storage tank flows downwards into a flocculating agent conveying pipe through gravity; all be equipped with the valve on flocculating agent pipeline and silt pipeline, wherein connect the silt pipeline between silt agitator and silt storage drainage bag and be equipped with the wave section of right angle turn. The sludge stirrer is connected to the sludge conveying pipeline, and the right-angle turning wave section arranged on the sludge conveying pipeline is used for enabling sludge to form turbulent flow in the sludge conveying pipeline, so that the sludge and the flocculating agent are fully and uniformly mixed.
The invention has the advantages and beneficial effects that: the river sludge dewatering treatment system has the characteristics of simple structure, low sludge treatment cost, short treatment period and small occupied area. The sludge deposited at the bottom of the riverbed of the riverway is conveyed into the sludge conveying pipeline through the sludge pumping pipeline by the sludge pumping conveying pump, and then is conveyed into the sludge storage and drainage bag through the sludge conveying pipeline. The silt is stored the drain pocket and is crossed the filter bag for having elastic permeating water, stores the interior input silt of drain pocket to silt through silt pipeline is continuous, under the condition that silt input pressure constantly increases and decreases, and the silt is stored the drain pocket and is extruded most moisture in the silt for moisture in the silt reduces to about 40% by more than 90%. The in-process that silt carried in silt pipeline is through tee bend pipe connector and the flocculating agent that silt pipeline is connected adds the pipe, can add the flocculating agent to the silt in, the flocculating agent can play the efficiency of the dehydration of accelerating silt solidification, and the flocculating agent adds the pipe and is connected with the flocculating agent storage tank through flocculating agent addition pump. And after most of water is extruded out, the sludge in the sludge storage drainage bag is air-dried for 30-60 days in a natural environment, and when the water content of the sludge in the sludge storage drainage bag is reduced to about 20%, the sludge can become soil capable of being reused.
The method has the main technical characteristics of adopting the ecological soil pipe dehydration technology, is economic and energy-saving, does not need large-scale equipment and factory investment, does not need electric power for a sludge dehydration part, and has the advantages of energy conservation and emission reduction.
The diameter and the length of the ecological soil pipe can be adjusted according to needs, the plasticity is strong, and the ecological soil pipe can be stacked and is convenient to transport.
And the totally-enclosed construction almost has no noise and is not easy to cause secondary pollution. The sludge generated by all desilting is filled in the closed geotechnical container, so that the inspection by owners is facilitated, the possibility of 'drying one party and stealing three parties' is avoided, and the water environment is protected.
The treatment capacity of the waste water and the sludge is completely met, and the treatment capacity can be increased and reduced according to the flow of the pump.
The sludge volume can be reduced by more than 50 percent basically in one month, and the subsequent removal and treatment are simpler and more convenient.
The soil pipe has a 'solid sealing' effect on the sludge, and during the dehydration and storage of the soil pipe, the sludge is subjected to a series of complex physical and chemical processes, so that pathogens and pathogenic bacteria in the sludge can be eliminated to the maximum extent.
Can remove pollutants in sludge: rich nitrogen and phosphorus organic matters in the eutrophic water body; high molecular organic compounds (hydrocarbons including oils and greases); halogenated and cyclic hydrocarbons (refractory chemicals such as DDT insecticides, PCB, etc.); polycyclic aromatic hydrocarbons (a range of chemical products including petroleum products and their by-products); metals or non-metals (iron, manganese, lead, chromium, zinc, arsenic, tin, etc.).
Drawings
FIG. 1 is a schematic structural diagram of a river sludge dewatering treatment system according to the present invention;
FIG. 2 is a schematic sectional view of a sludge agitator in the river sludge dewatering treatment system according to the present invention;
fig. 3 is a schematic sectional structural view of a sludge storage and drainage bag in the riverway sludge dewatering treatment system.
In the figure: 1. a sludge suction pipe; 2. a sludge pumping and conveying pump; 3. a sludge conveying pipeline; 3.1, sludge is output to divide the pipeline; 4. a sludge storage and drainage bag; 5. a drainage ditch; 6. a flocculant addition pipe; 7. a support; 8. a flocculant storage tank; 9. a sludge stirrer; 9.1, blades; 10. a valve; 11. a flow meter.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1 to 3, the invention is a river sludge dewatering treatment system, which comprises a sludge suction pipeline 1, a sludge suction delivery pump 2, a sludge delivery pipeline 3 and a sludge storage drainage bag 4 (or called as ecological soil pipe) which are arranged in sequence, wherein a drainage pipe or drainage ditch 5 is arranged at the periphery of the sludge storage drainage bag 4, a flocculant adding pipe 6 is connected to the sludge delivery pipeline 2, the flocculant adding pipe 6 is connected with a flocculant storage tank 8 arranged on a support 7, the flocculant adding pipe 6 can be connected to the sludge delivery pipeline 3 near a sludge output port of the sludge suction delivery pump 2 through a tee pipe fitting, and a sludge stirrer 9 is connected to one side of the sludge delivery pipeline 3 in the forward delivery direction, which is connected with the flocculant adding pipe 6, in series.
Wherein silt suction pipe 1 can select to use corrugated hose or directly is connected with the silt suction delivery pump, and the PVC plastic tubing can be chooseed for use to silt delivery pipe 3, or chooses for use UPVC pipe, steel pipe etc. and the silt is stored and is discharged water bag 4 and can choose for use for the bag of weaving that has elasticity, escape canal 5 and river course intercommunication, and the water of will extruding returns the river course in again, and the flocculating agent needs to select for use different flocculating agents according to the characteristic of silt in the different river courses.
The flocculant adding pipe 6 is connected to the sludge conveying pipeline 3 near the sludge output port of the sludge suction conveying pump 2 through a three-way pipe fitting, so that the mixing time of the flocculant and sludge is prolonged, the dehydration process of the sludge is accelerated, and the centralized installation and the centralized debugging of equipment are facilitated.
The sludge agitator 9 is connected in series to the sludge transporting pipe 3 on the side of the sludge forward transporting direction to which the flocculant adding pipe 6 is connected in order to facilitate sufficient mixing between the flocculant and the sludge so that the flocculant is uniformly mixed in the sludge transporting pipe.
In order to facilitate the formation of a turbulent flow of the fluid by the sludge in the sludge transport conduit 3, which forms a homogeneous mixing of the flocculating agent with the sludge by means of the turbulent flow of the fluid, it is a further preferred embodiment of the invention that the sludge agitator 9 comprises blades 9.1 arranged inside the conduit, said blades 9.1 being blades 9.1 arranged on the central shaft and/or blades 9.1 arranged on the inner wall of the conduit.
In order to facilitate the formation of a turbulent flow of the fluid in the sludge transport conduit 3, by which a uniform mixing of the flocculating agent with the sludge is formed, it is a further preferred embodiment of the invention that the blades 9.1 form an angle of 30 ° or 45 ° with the axis of the central shaft and/or the inner wall in the flow direction of the sludge.
In order to facilitate the formation of turbulent flow of the fluid in the sludge conveying pipe 3, which forms uniform mixing of the flocculating agent and the sludge through the turbulent flow of the fluid, a further preferred embodiment of the present invention is that the sludge conveying pipe 3 between the sludge agitator 9 and the sludge storage and drainage bag 4 is provided with a plurality of sections of square wave pulse-type folded pipe connected by right-angled bends. The flowing direction of the sludge is changed by passing through the elbow bends for many times when the sludge passes through the broken line pipe sections in the sludge conveying pipeline 3, so that the sludge forms turbulent flow in the sludge conveying pipeline 3, and the sludge and the flocculating agent are further uniformly mixed through the turbulent flow of the sludge.
In order to facilitate the sludge in the sludge conveying pipeline 3 to be conveyed to a plurality of sludge storage and drainage bags 4 at the same time, in a further preferred embodiment of the invention, a plurality of sludge output branch pipelines 3.1 are arranged in parallel on the straight pipelines of the sludge conveying pipeline 3 arranged at the rear part of the square wave pulse type folding pipeline.
In order to facilitate the control of the starting, stopping and flow rate of the sludge transportation from the sludge transportation pipe 3 to the sludge storage and drainage bag 4 and the control of the addition amount and time of the flocculant to the sludge transportation pipe 6, a further preferred embodiment of the present invention is that valves 10 are respectively arranged on the straight pipe of the sludge transportation pipe 3, the sludge output branch pipe 3.1, one side of the feed end of the sludge stirrer 9 and the flocculant addition pipe 6.
In order to accurately control and detect the addition amount and the addition time of the flocculant into the sludge conveying pipeline 6, the further preferable embodiment of the invention is that a flow meter 11 is also connected to the flocculant adding pipeline 6, and a valve 10 arranged on the flocculant adding pipeline 6 is an electromagnetic proportional valve.
In order to facilitate the water in the sludge to be discharged out of the sludge storage and drainage bag and reduce the occupied area in the sludge treatment process, and to enable the sludge storage and drainage bag 4 to be bulged under the action of external sludge conveying pressure and to be piled up to the upper part of the ground, the sludge storage and drainage bag 4 is an elastic woven bag provided with spandex fibers.
The technical scheme of the invention also provides a river sludge dewatering treatment method, which comprises the following treatment steps:
s1: one end of a sludge pumping pipeline 1 is conveyed into sludge at the bottom of a river channel, and the other end of the sludge pumping pipeline is connected with a sludge inlet end of a sludge pumping and conveying pump 2;
s2: one end of a sludge conveying pipeline 3 is connected with a sludge outlet end of a sludge pumping and conveying pump 2;
s3: a sludge stirrer 9 is connected in series on the sludge conveying pipeline 3, the sludge conveying pipeline 3 between the sludge suction conveying pump 2 and the sludge stirrer 9 is connected with one end of a flocculant conveying pipe 6 through a three-way pipe connector, and the other end of the flocculant conveying pipe 6 is connected with a flocculant storage tank 8 arranged on a bracket 7;
s4: the other end of the sludge conveying pipeline 3 is connected with a sludge storage and drainage bag 4 through a flange connecting piece;
s5: starting a sludge pumping and conveying pump 2, filling sludge at the bottom of a river channel into a sludge storage and drainage bag 4 through a sludge pumping pipeline 1, the sludge pumping and conveying pump 2, a sludge conveying pipeline 3, a flocculating agent conveying pipe 6 and a sludge stirrer 9 by the sludge pumping and conveying pump 2, and continuously conveying the sludge into the sludge storage and drainage bag 4 through the sludge pumping and conveying pump 2 and the sludge conveying pipeline 3, so that the pressure in the sludge storage and drainage bag 4 is increased, and most of water in the sludge is squeezed out by the sludge in the sludge storage and drainage bag 4 under the action of high pressure;
s6: the sludge storing and draining bag 4 is a water permeable filtering bag, and river water discharged from the sludge storing and draining bag 4 flows back to the river channel through the drainage ditch 5 or the drainage pipe.
In order to simplify the installation and debugging process of the equipment, reduce the installation and debugging cost of the equipment and simultaneously facilitate the control of the conveying speed, the adding amount and the adding time of the flocculating agent, the sludge suction conveying pump 2, the sludge conveying pipeline 3, the flocculating agent conveying pipe 6, the sludge stirrer 9 and the sludge storage and drainage bag 4 are all arranged on the ground, and the flocculating agent storage tank 8 is arranged on a bracket 7 which is higher than the ground, so that the flocculating agent in the flocculating agent storage tank 8 flows downwards into the flocculating agent conveying pipe 6 through gravity; valves are arranged on the flocculating agent conveying pipeline 6 and the sludge conveying pipeline 3, wherein the sludge conveying pipeline 3 connected between the sludge stirrer 9 and the sludge storage and drainage bag 4 is provided with a wave section with right-angle turning. The sludge stirrer is connected to the sludge conveying pipeline, and the right-angle turning wave section arranged on the sludge conveying pipeline is used for enabling sludge to form turbulent flow in the sludge conveying pipeline, so that the sludge and the flocculating agent are fully and uniformly mixed.
The dehydration and consolidation of the ecological soil pipe are based on the water repellency mechanism of the ecological soil pipe material and the hydrodynamic characteristic of sludge filling pressure, the sludge is rapidly dehydrated and consolidated through a series of complex physical and chemical processes under the action of a special treating agent prepared aiming at the sludge characteristic, and pollution components in the sludge are sealed and stabilized. The method is the most economic and convenient sludge ecological treatment technology which can treat the polluted bottom sludge on site so far, and is also a main way for realizing sludge recycling.
The ecological soil pipe is economical and energy-saving, large-scale equipment and factory investment are not needed, and the sludge dewatering part does not need electric power, so that the ecological soil pipe has the advantages of energy conservation and emission reduction.
The ecological soil pipe is convenient, the diameter and the length can be adjusted according to needs, the plasticity is strong, and the ecological soil pipe can be stacked and is convenient to transport.
The ecological soil pipe is environment-friendly, is constructed in a totally-enclosed manner, almost has no noise and is not easy to cause secondary pollution. The sludge generated by all desilting is filled in the closed geotechnical container, so that the inspection by owners is facilitated, the possibility of 'drying one party and stealing three parties' is avoided, and the water environment is protected.
The ecological soil pipe is efficient, completely satisfies the handling capacity of waste water and mud, and the handling capacity can increase and reduce the quantity of piping bag according to the flow of pump.
The ecological soil pipe has good environment-friendly volume reduction effect, the volume of the sludge can be basically reduced by more than 50% within one month, and the subsequent removal and treatment are simpler and more convenient.
The ecological soil pipe has good sludge stabilizing effect, the soil pipe has a fixing and sealing effect on the sludge, and the sludge can eliminate pathogens and pathogenic bacteria in the sludge to the maximum extent through a series of complex physical and chemical processes during the dehydration and storage of the soil pipe.
The ecological soil pipe can remove the following pollutants in sludge, nitrogen and phosphorus organic matter high molecular organic matters (hydrocarbons comprise oil and grease), halogenated hydrocarbons and cyclic hydrocarbons (difficultly degradable chemicals such as DDT pesticides, PCB and the like), polycyclic aromatic hydrocarbons (a series of chemical products comprise petroleum products and byproducts thereof), metals and nonmetals (iron, manganese, lead, chromium, zinc, mercury, arsenic, tin and the like) which are rich in eutrophic water.
The technical advantage of adopting the ecological soil pipe lies in that:
the ecological dehydrated soil pipe has the characteristics of high acid and alkali corrosion resistance, flexible and variable size, simple operation and the like. Compared with the traditional process, the method has the advantages of more stable treatment performance, simpler process, more excellent effect, short dehydration period, low cost, simple operation, strong safety and the like, and the total investment and treatment cost are more competitive. Meanwhile, an intelligent management system can be arranged according to the requirement to carry out unmanned operation monitoring control.
1. The volume of the ecological dehydration soil pipe can be adjusted at will, the range is large, and the engineering treatment capacity is flexible;
2. the investment of dehydration mechanical equipment, electric power configuration and movement are not needed;
3. the dehydration and solidification system has small investment, little manpower and simple operation;
4. the sludge is closed in the dehydration process, so that secondary pollution can be avoided;
5. the water content of the sludge in the bag can be adjusted according to the filling times, pressure and idle time of the filter bag;
6. by adopting special ecological design, the strength is high, and the aging is not easy.
7. The formula of the dehydration auxiliary agent can be adjusted according to the condition of the sludge, so that the sludge is harmlessly treated;
8. the sludge after the dehydration treatment can be used as slope protection soil of rivers and lakes or soil for agriculture and greening; the treated purified water can reach the standard for discharge or greening and recycling;
9. the investment of system engineering is low, the operation cost is low, and the construction period is short.
The application range is as follows:
1. dredging rivers, lakes, reservoirs, harbors, docks and the like, and treating river basins and ecological restoration by dehydrating bottom mud;
2. municipal sludge treatment in water plants, sewage plants and the like; industrial sludge treatment in chemical industry, pharmacy, printing and dyeing and the like;
3. the manure sewage treatment is washed in farming, herding and fishery farms, the plantation wastewater treatment and the aquaculture bed abandonment
Treatment of the material;
4. treating fly ash and low ash in pulp mills, paper mills and power plants, desulfurizing and dedusting sludge in iron and steel mills, treating sludge in aluminum mills and ceramic mills, and the like;
5. waste water treatment and waste recycling of mining and washing, dehydration treatment of engineering slurry in engineering construction and the like;
the ecological soil pipe dehydration and solidification technology is simple and economic, has wide application field, strong practicability, very high economic, social and environmental values and very wide application prospect. At present, the black and odorous bottom sludge of medium and small river channels, a plurality of solid waste treatment plants and sewage treatment plants with large quantity and wide range in China all encounter troublesome sludge problems, but the requirements of no redundant space on site, low available treatment cost and rapid standard treatment need to be met, and the treatment modes of the existing mechanical equipment of various processes cannot meet the requirements. The ecological dehydration soil pipe technology can effectively combine dehydration and solidification technologies and carry out on-site treatment by utilizing a limited temporary site. Are no less effective ways to solve such problems.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a river course silt dewatering processing system, a serial communication port, the system is including the silt suction pipe way that sets gradually, silt suction delivery pump, drainage bag is stored to silt delivery pipe way and silt, the periphery of storing drainage bag at silt is equipped with drain pipe or escape canal, it adds the pipe to be connected with the flocculating agent on silt delivery pipe way, the flocculating agent adds the flocculating agent storage tank that the pipe set up on the support and connects, the flocculating agent adds union coupling and is close to near the silt output port of silt suction delivery pump at silt delivery pipe way, silt delivery pipe way is being connected with the silt forward direction of delivery one side series connection of flocculating agent interpolation pipe and is having the silt agitator.
2. The riverway sludge dewatering treatment system of claim 1, wherein the sludge agitator comprises a blade disposed inside the pipeline, the blade being a blade disposed on a central shaft and/or a blade disposed on an inner wall of the pipeline.
3. The riverway sludge dewatering treatment system according to claim 2, wherein the blades form an angle of 30-45 degrees with the axis of the central shaft and/or the inner wall along the sludge flow direction.
4. The riverway sludge dewatering treatment system according to claim 3, wherein the sludge conveying pipeline between the sludge stirrer and the sludge storage and drainage bag is provided with a plurality of sections of square wave pulse-type folded pipes connected by right-angle bends.
5. The riverway sludge dewatering treatment system according to claim 4, wherein a plurality of sludge output branch pipes are arranged in parallel on the straight pipes of the sludge conveying pipes arranged at the rear part of the square wave pulse type folding pipe.
6. The riverway sludge dewatering treatment system according to claim 5, wherein valves are respectively arranged on the straight pipeline of the sludge conveying pipeline, the sludge output branch pipeline, one side of the feed end of the sludge stirrer and the flocculating agent adding pipe.
7. The riverway sludge dewatering treatment system according to claim 6, wherein a flow meter is further connected to the flocculant addition pipe, and the valve arranged on the flocculant addition pipe is an electromagnetic proportional valve.
8. The riverway sludge dewatering treatment system according to claim 1, wherein the sludge storage and drainage bags are elastic woven bags provided with spandex fibers.
9. A river sludge dewatering treatment method is characterized by comprising the following treatment steps:
s1: one end of a sludge suction pipeline is conveyed into sludge at the bottom of the river channel, and the other end of the sludge suction pipeline is connected with a sludge inlet end of a sludge suction conveying pump;
s2: connecting one end of a sludge conveying pipeline with a sludge outlet end of a sludge pumping and conveying pump;
s3: a sludge stirrer is connected in series on the sludge conveying pipeline, the sludge conveying pipeline between the sludge suction conveying pump and the sludge stirrer is connected with one end of a flocculating agent conveying pipe through a three-way pipe connector, and the other end of the flocculating agent conveying pipe is connected with a flocculating agent storage tank arranged on the bracket;
s4: connecting the other end of the sludge conveying pipeline with a sludge storage and drainage bag through a flange connecting piece;
s5: starting a sludge pumping and conveying pump, filling sludge at the bottom of a river channel into a sludge storage and drainage bag through a sludge pumping pipeline, a sludge pumping and conveying pump, a sludge conveying pipeline, a flocculating agent conveying pipe and a sludge stirrer by the sludge pumping and conveying pump, and continuously conveying the sludge into the sludge storage and drainage bag through the sludge pumping and conveying pump and the sludge conveying pipeline, so that the pressure in the sludge storage and drainage bag is increased, and most of water in the sludge is squeezed out by the sludge in the sludge storage and drainage bag under the action of high pressure;
s6: the sludge storing and draining bag is a water permeable filtering bag, and river water discharged from the sludge storing and draining bag flows back to the river channel through a drainage ditch or a drainage pipe.
10. The riverway sludge dewatering treatment method according to claim 9, wherein the sludge suction conveying pump, the sludge conveying pipeline, the flocculant conveying pipe, the sludge stirrer and the sludge storage and drainage bag are all arranged on the ground, and the flocculant storage tank is arranged on a support which is higher than the ground, so that the flocculant in the flocculant storage tank flows downwards into the flocculant conveying pipe through gravity; all be equipped with the valve on flocculating agent pipeline and silt pipeline, wherein connect the silt pipeline between silt agitator and silt storage drainage bag and be equipped with the wave section of right angle turn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011278175.0A CN112745008A (en) | 2020-11-16 | 2020-11-16 | River channel sludge dewatering treatment system and sludge treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011278175.0A CN112745008A (en) | 2020-11-16 | 2020-11-16 | River channel sludge dewatering treatment system and sludge treatment method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112745008A true CN112745008A (en) | 2021-05-04 |
Family
ID=75648867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011278175.0A Pending CN112745008A (en) | 2020-11-16 | 2020-11-16 | River channel sludge dewatering treatment system and sludge treatment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112745008A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113582505A (en) * | 2021-08-04 | 2021-11-02 | 江苏科技大学 | Continuous type high-water-content mud decrement hardening system and method |
| CN115259593A (en) * | 2022-08-23 | 2022-11-01 | 水利部交通运输部国家能源局南京水利科学研究院 | Active and passive enhanced homogenization mixing system for pipeline flowing solidification sludge treatment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102849917A (en) * | 2012-08-03 | 2013-01-02 | 江南大学 | Continuous on-line filter bag type dehydration method for dredging sludge in lakes and rivers |
| CN105461192A (en) * | 2015-11-30 | 2016-04-06 | 杭州科瑞特环境技术有限公司 | Decentralized type rapid dewatering and residual water purification system and method for river bottom mud |
| CN206069673U (en) * | 2016-09-09 | 2017-04-05 | 徐吉浣 | A kind of water silt cleaning and harmless treatment and disposal system |
| CN106927661A (en) * | 2017-04-26 | 2017-07-07 | 湖州中呈科技有限公司 | A kind of riverway sludge dehydrating and curing device |
| EP3301078A1 (en) * | 2016-09-29 | 2018-04-04 | Vesirakennus Ojanen Oy | Method for treating dredged material or sludge and use of the method |
| KR101914419B1 (en) * | 2018-06-14 | 2018-11-01 | 김재규 | Dredging sludge treatment apparatus |
| CN208717124U (en) * | 2018-06-19 | 2019-04-09 | 美丽国土（北京）生态环境工程技术研究院有限公司 | Dredging and sludge treatment system |
-
2020
- 2020-11-16 CN CN202011278175.0A patent/CN112745008A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102849917A (en) * | 2012-08-03 | 2013-01-02 | 江南大学 | Continuous on-line filter bag type dehydration method for dredging sludge in lakes and rivers |
| CN105461192A (en) * | 2015-11-30 | 2016-04-06 | 杭州科瑞特环境技术有限公司 | Decentralized type rapid dewatering and residual water purification system and method for river bottom mud |
| CN206069673U (en) * | 2016-09-09 | 2017-04-05 | 徐吉浣 | A kind of water silt cleaning and harmless treatment and disposal system |
| EP3301078A1 (en) * | 2016-09-29 | 2018-04-04 | Vesirakennus Ojanen Oy | Method for treating dredged material or sludge and use of the method |
| CN106927661A (en) * | 2017-04-26 | 2017-07-07 | 湖州中呈科技有限公司 | A kind of riverway sludge dehydrating and curing device |
| KR101914419B1 (en) * | 2018-06-14 | 2018-11-01 | 김재규 | Dredging sludge treatment apparatus |
| CN208717124U (en) * | 2018-06-19 | 2019-04-09 | 美丽国土（北京）生态环境工程技术研究院有限公司 | Dredging and sludge treatment system |
Non-Patent Citations (4)
| Title |
|---|
| 刘操: "《直排污水应急处理技术手册》", 30 April 2015, 中国环境科学出版社 * |
| 尉霞: "《产业用纺织品设计与生产》", 31 August 2009, 东华大学出版社 * |
| 杨春平等: "《废水处理原理》", 31 December 2012, 湖南大学出版社 * |
| 王计敏: "《热工计算理论与实务》", 31 May 2018, 中国科学技术出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113582505A (en) * | 2021-08-04 | 2021-11-02 | 江苏科技大学 | Continuous type high-water-content mud decrement hardening system and method |
| CN115259593A (en) * | 2022-08-23 | 2022-11-01 | 水利部交通运输部国家能源局南京水利科学研究院 | Active and passive enhanced homogenization mixing system for pipeline flowing solidification sludge treatment |
| CN115259593B (en) * | 2022-08-23 | 2023-12-01 | 水利部交通运输部国家能源局南京水利科学研究院 | Active and passive enhanced homogenizing mixing system for treating sludge by pipeline flow solidification |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101693590B (en) | Heavy metal polluted sludge treatment method | |
| CN109851190B (en) | Treatment system and treatment method for drying polluted bottom mud | |
| CN105461192A (en) | Decentralized type rapid dewatering and residual water purification system and method for river bottom mud | |
| CN112745008A (en) | River channel sludge dewatering treatment system and sludge treatment method | |
| CN107915392A (en) | Small river sludge ecological treatment system in cities and towns | |
| CN110171917A (en) | A kind of integrated shore bank band system and its application of river and lake silt treatment in situ | |
| CN106186639A (en) | Lake, river is gushed polluted bed mud and is processed remaining soil regenerative system | |
| CN110668652A (en) | Rural domestic sewage classification treatment system | |
| CN103183458A (en) | Processing method of heavy metal-contaminated sediment | |
| CN101376071B (en) | Technique for separating mud and water in river and lake deposit | |
| CN203568962U (en) | Sludge concentration system | |
| CN206680234U (en) | Unified water treating apparatus with ballasted flocculation precipitation function | |
| CN207362002U (en) | A kind of water and treat agricultural waste system of bio-contact oxidation and artificial swamp combination | |
| CN105540803A (en) | Full-automatic sewage treatment device | |
| CN214829885U (en) | River silt dewatering processing system | |
| CN201268647Y (en) | Small-sized domestic sewage processing system | |
| CN206886928U (en) | A kind of sewage disposal system | |
| CN207016661U (en) | A kind of portable mud thickener | |
| CN113371961A (en) | Emergent dewatering system of high-density filter bag of self-adaptation suspended solid concentration | |
| CN212833390U (en) | Large-volume sludge and mud continuous harmless treatment system | |
| CN209685531U (en) | Waste water treatment system | |
| CN103011415B (en) | Simple water treatment and recovery device for large-size wetland | |
| CN209567933U (en) | A kind of coal chemical industrial waste water processing depth removal CODcr processing system | |
| CN205999251U (en) | A kind of harmless purification Integrated Processing Unit of recycling sludge | |
| CN206395845U (en) | A kind of aquaculture wastewater processing unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210504 |