CN214528434U - Non-concentrated liquid treatment equipment suitable for low-concentration landfill leachate - Google Patents
Non-concentrated liquid treatment equipment suitable for low-concentration landfill leachate Download PDFInfo
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- CN214528434U CN214528434U CN202023301699.5U CN202023301699U CN214528434U CN 214528434 U CN214528434 U CN 214528434U CN 202023301699 U CN202023301699 U CN 202023301699U CN 214528434 U CN214528434 U CN 214528434U
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Abstract
The utility model relates to a no concentrate treatment facility suitable for low concentration landfill leachate carries out the orderly combination with the pure materialization processing technique of multiple maturity, mainly includes equalizing basin, coagulating basin, flocculation basin, first sedimentation tank, oxidation reaction pond, neutralization sedimentation tank, second sedimentation tank, break point chlorination reaction tank and crosses the filter tank, and the on-line monitoring data through controlling pH value, pressure value, pollutant concentration isoparametric in time feeds back and constantly adjusts, can realize long-range intelligent control. The utility model can thoroughly remove different pollutants, stably and efficiently ensure that the final effluent meets the discharge requirement, adopts a pure physicochemical treatment technology, does not generate concentrated solution, and realizes the aim of full-scale treatment of the percolate; the reaction is rapid, the hydraulic retention time is short, the requirement on reaction volume is not high, all units can be considered to be integrally designed into skid-mounted low-concentration landfill leachate treatment equipment, and the method has the advantages of being movable, intelligent in control and the like.
Description
Technical Field
The utility model belongs to the technical field of the processing of water, waste water, sewage or mud, in particular to no concentrate treatment facility suitable for low concentration landfill leachate.
Background
With the rapid development of socioeconomic in China, the production of domestic garbage in cities and towns is increasing day by day, according to statistics, the annual output of domestic garbage in China is about 2.5 hundred million tons, the accumulated stockpiled garbage around the city reaches 70 hundred million tons, the occupied land is about 80 to more than ten thousand mu, and almost 2/3 cities in 661 cities are surrounded by garbage. In the early stage, the treatment of urban garbage in China is mainly based on landfill, and as time goes on, the part of landfill is gradually close to an urban built-up area, which has many adverse effects on urban image and regional economic development, wastes land resources, pollutes ecological environment, destroys urban image and has potential safety hazard. Therefore, the state increases the treatment intensity of the garbage storage landfill by a series of regulation policies.
The landfill leachate treatment problem is inevitably caused in the treatment process of the storage landfill, the components of the landfill leachate are generally complex, a large amount of organic matters, ammonia nitrogen elements, suspended matters, a small amount of heavy metal ions and the like are contained, the proportion of nutrient elements is disordered, and the standard discharge difficulty of the landfill leachate treatment is high. In particular, drainage channels, rain and sewage diversion systems and the like are not usually arranged in some irregular refuse landfills, so that leachate generated by the refuse landfills is mixed into rainwater to cause further diffused pollution, although the concentration of leachate-rainwater mixed liquor is not high relative to leachate stock solution, the leachate-rainwater mixed liquor has the same complexity in components and large treatment capacity, and has adverse effects on the surrounding environment and human health, and the treatment is urgently needed.
In the prior art, a common landfill leachate treatment technology is an MBR _ NF/RO combined technology or a single-stage/two-stage DTRO technology, and has the advantages of stable system, high effluent quality, flexibility in operation, small floor area and the like, but 25% -45% of organic matters and ammonia nitrogen in concentrated solution generated by membrane high-power concentration treatment are more difficult to degrade, pollutants cannot be thoroughly eliminated, and a membrane module needs to be cleaned or replaced regularly.
SUMMERY OF THE UTILITY MODEL
The utility model provides a problem that exists among the prior art, provide a no concentrate treatment facility suitable for low concentration landfill leachate who optimizes the structure, adopt non-membrane method technology not to have the concentrate to produce, can be applicable to thoroughly getting rid of main pollutant in the low concentration leachate.
The utility model adopts the technical scheme that a no concentrate treatment facility suitable for low concentration landfill leachate, equipment is including connecting in order:
the regulating tank is used for introducing the percolate and carrying out homogenization and quantity-equalizing treatment;
the coagulation tank and the flocculation tank are matched and arranged and are used for sequentially flocculating the percolate treated by the regulating tank;
the oxidation reaction tank is used for carrying out oxidation reaction on the leachate after flocculation treatment and removing organic pollutants;
a neutralization sedimentation tank, which is used for neutralizing and sedimentating the percolate treated by the oxidation reaction tank and taking supernatant;
a turning point chlorination reaction tank for removing ammonia nitrogen in the percolate;
a filter tank for removing residual chlorine and NH in the percolate3Removing N and enabling the effluent quality to reach the discharge standard;
a dosing device is arranged by matching the regulating tank, the coagulating tank, the flocculation tank, the oxidation reaction tank, the neutralization sedimentation tank and the breakpoint chlorination reaction tank;
the treatment equipment is provided with a controller in a matching way.
Preferably, the front end cooperation of equalizing basin is equipped with into water elevator pump, the elevator pump that intakes sets up with the controller cooperation.
Preferably, a first sedimentation tank is arranged between the flocculation tank and the oxidation reaction tank.
Preferably, a first clean water tank and a pH adjusting tank are arranged between the first sedimentation tank and the oxidation reaction tank, and a dosing device and a stirring device are arranged in cooperation with the pH adjusting tank; the dosing device and the stirring device are matched with the controller; and a sludge extraction pump is arranged in cooperation with the first sedimentation tank and is arranged in cooperation with the controller.
Preferably, a second sedimentation tank is arranged between the neutralization sedimentation tank and the breakpoint chlorination reaction tank.
Preferably, a second clean water tank is arranged between the second sedimentation tank and the breakpoint chlorination reaction tank.
Preferably, a sludge extraction pump is arranged in cooperation with the second sedimentation tank, and the sludge extraction pump is arranged in cooperation with the controller.
Preferably, a third clean water tank is arranged between the breakpoint chlorination reaction tank and the filtering tank.
Preferably, a stirring device is arranged by matching the coagulation tank, the flocculation tank and the breakpoint chlorination reaction tank, and the stirring device is arranged by matching with the controller.
Preferably, a rotary fan is arranged by matching the regulating tank, the oxidation reaction tank and the neutralization sedimentation tank, and the rotary fan is matched with the controller.
The utility model provides an optimize no concentrate treatment facility suitable for low concentration landfill leachate of structure, carry out the combination in order with the pure materialization processing technique of multiple maturity, mainly include equalizing basin, coagulating basin, flocculation basin, first sedimentation tank, oxidation reaction tank, neutralization sedimentation tank, second sedimentation tank, break point chlorination reaction tank and filter tank, through the timely feedback of the on-line monitoring data of control pH value, pressure value, pollutant concentration isoparametric and constantly adjust, can realize long-range intelligent control.
The beneficial effects of the utility model include:
(1) the mature technologies of mixed flocculation, Fenton oxidation, breakpoint chlorination and active carbon filtration are combined in order to form a disposal device, different pollutants can be thoroughly removed in the whole percolate treatment system, the characteristics of stability and high efficiency of the system are furthest exerted, and the final effluent is favorably ensured to meet the discharge requirement;
(2) in the process, a pure physical and chemical treatment technology is adopted, no concentrated solution is generated, and the aim of full-scale treatment of the percolate is really realized;
(3) each unit of the percolate reacts quickly, the hydraulic retention time is short, the requirement on reaction volume is not high, each unit can be designed into skid-mounted low-concentration landfill percolate treatment equipment in a follow-up mode, and the method has the advantages of being movable, capable of achieving intelligent control and the like.
Drawings
Fig. 1 is the structure diagram of the treatment device of the present invention, wherein the solid arrow is the conveying direction of the percolate and the sludge, and the dotted arrow is the working direction of the rotary fan.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments, but the present invention is not limited thereto, and the present invention is not limited to the above embodiments, and all the embodiments should be considered as violating the protection scope of the present invention.
The utility model relates to a no concentrate treatment facility suitable for low concentration landfill leachate, equipment is including connecting in order:
the adjusting tank 1 is used for introducing the percolate and carrying out homogenization and quantity-equalizing treatment;
the cooperation of the front end of equalizing basin 1 is equipped with into water elevator pump 2, it sets up with the cooperation of controller to intake elevator pump 2.
The utility model discloses in, equalizing basin 1 is the acid-base equalizing basin.
The utility model discloses in, adopt into 2 extractions of elevator pump of intaking to infiltration filtrating in the refuse landfill dewatering well and get into filtration liquid equalizing basin 1, can guarantee after carrying out the homogeneity and measuring with the equal volume that follow-up treatment facility continuous stable operation, mix flocculation reaction performance best effect.
The coagulation tank 3 and the flocculation tank 4 are matched and arranged for sequentially flocculating the percolate treated by the regulating tank 1;
a first sedimentation tank 6 is arranged between the flocculation tank 4 and the oxidation reaction tank 5.
A first clean water tank 7 and a pH adjusting tank 8 are arranged between the first sedimentation tank 6 and the oxidation reaction tank 5, and a dosing device 9 and a stirring device 10 are arranged in cooperation with the pH adjusting tank 8; the dosing device 9 and the stirring device 10 are matched with the controller; and a sludge extraction pump 11 is arranged in cooperation with the first sedimentation tank 6, and the sludge extraction pump 11 is arranged in cooperation with the controller.
The utility model discloses in, through throwing the medicament of certain proportion to coagulating basin 3 and flocculation basin 4, can be so that suspended solid, insoluble COD and a small amount of heavy metal in the filtration liquid can get rid of, the colourity of filtration liquid obtains certain reduction simultaneously.
The utility model discloses in, the flocculent precipitate after the reaction is extracted by sludge extraction pump 11 is automatic concentrates in disposing to sludge impoundment 12, and the supernatant is extracted with the elevator pump after passing through first clean water basin 7 simultaneously, gets into in the subsequent reaction.
The utility model discloses in, carry out throwing of medicament in pH equalizing basin 8, adjust the pH value, guarantee subsequent oxidation reaction effect.
The oxidation reaction tank 5 is used for carrying out oxidation reaction on the flocculated percolate and removing organic pollutants;
the utility model discloses in, get rid of the hydroxyl free radical that produces in the reaction process, carry out oxidative degradation to organic pollutant, colourity etc..
A neutralization sedimentation tank 13, which is used for neutralizing and sedimentating the percolate treated by the oxidation reaction tank 5 and taking supernatant;
a second sedimentation tank 15 is arranged between the neutralization sedimentation tank 13 and the breakpoint chlorination reaction tank 14.
A second clean water tank 16 is arranged between the second sedimentation tank 15 and the breakpoint chlorination reaction tank 14.
And a sludge extraction pump 11 is arranged in cooperation with the second sedimentation tank 15, and the sludge extraction pump 11 is arranged in cooperation with the controller.
The utility model discloses in, throw in neutralization sedimentation tank 13 and throw the flocculating agent and deposit with higher speed, guarantee follow-up link normal operating.
The utility model discloses in, the hydroxide that the reaction produced deposits and is extracted to concentrate in the sludge impoundment 12 by the automatic extraction of sludge extraction pump 11 and deals with, and the supernatant is extracted with the elevator pump after passing through second clean water basin 16 simultaneously, gets into in the subsequent reaction.
A turning point chlorination reaction tank 14 for removing ammonia nitrogen in the percolate;
a third clean water tank 18 is arranged between the breakpoint chlorination reaction tank 14 and the filter tank 17.
In the utility model, almost all oxidizing chlorine is reduced and all ammonia nitrogen is oxidized in the breakpoint chlorination reaction tank 14; of course, in order to ensure the complete ammonia nitrogen chlorination reaction, the actual chlorine adding amount should be larger than the theoretical calculation value.
A filter tank 17 for residual chlorine and NH in the percolate3Removing N and enabling the effluent quality to reach the discharge standard;
the utility model discloses in, filter jar 17 and generally filter jar 17 for active carbon, adsorb through advantages such as active carbon pore structure is flourishing, specific surface area is big to the chlorine residue in the anterior segment reaction waste water and get rid of, can also further get rid of the NH of aquatic3And N, ensuring that the quality of the final effluent reaches the standard and is discharged.
A dosing device 9 is arranged by matching with the adjusting tank 1, the coagulating tank 3, the flocculating tank 4, the oxidation reaction tank 5, the neutralization and sedimentation tank 13 and the breakpoint chlorination reaction tank 14;
the mixing tank 3, the flocculation tank 4 and the break point chlorination reaction tank 14 are matched to be provided with a stirring device 10, and the stirring device 10 is matched with a controller.
And a rotary fan 19 is arranged by matching the adjusting tank 1, the oxidation reaction tank 5 and the neutralization sedimentation tank 13, and the rotary fan 19 is matched with the controller.
The utility model discloses in, rotary fan 19 plays the effect of air stirring, has guaranteed the speed of carrying on of reaction.
The treatment equipment is provided with a controller in a matching way.
In the utility model, the controller is set as the conventional technical feature in the field, and the technical personnel in the field can set the controller according to the requirement; it should be noted that the utility model discloses in-process of actual operation, can directly set up to setting up side by side and crisscross opening from top to bottom, be convenient for percolate and flow between adjacent reaction tank, also can set up the pipeline and with the transport of valve control percolate, the valve of here can manual control, also can carry out automatically controlled with the controller, in addition, unit, the part in equipment such as charge device 9, agitating unit 10 all should be controlled by the controller under the condition that does not have special explanation.
The utility model provides a treatment facility sets up to low concentration landfill leachate (COD is less than or equal to 1000mg/L, the ammonia nitrogen is less than or equal to 400 mg/L), the simple easy operation of process flow, area is little, the operation is stable, and is easy and simple to handle, the reaction is rapid, pure materialization method is handled, no membrane concentrate produces, the processing is thorough, COD in the leachate can effectively be got rid of, BOD, the ammonia nitrogen, multiple pollutants such as total nitrogen, show great potentiality in the aspect of the full quantization of landfill leachate is dealt with, can satisfy the requirement that landfill low concentration landfill leachate full quantization is dealt with up to standard and is discharged.
The utility model provides a processing method of processing equipment includes following step:
step 1: introducing the percolate into a regulating tank 1 for homogenizing and uniform treatment; the COD of the effluent after the leachate homogenization is less than 1000mg/L, and the ammonia nitrogen is less than 400 mg/L;
step 2: the leachate treated in the step 1 is respectively led into a coagulation tank 3 and a flocculation tank 4 in sequence for flocculation treatment; adjusting the pH value of the leachate to be alkali neutral by adding alkali liquor, and ensuring the subsequent mixed flocculation reaction to exert the best effect, specifically, adding PAC (polyaluminium chloride) and PAM (polyacrylamide) medicaments in a certain proportion to remove suspended matters, insoluble COD (chemical oxygen demand) and a small amount of heavy metals in the leachate, and simultaneously reducing the chromaticity to a certain extent; the flocculent precipitate after reaction is automatically extracted into a sludge tank 12 by a sludge pump for centralized disposal, and meanwhile, the supernatant liquid flows back to the regulating tank 1;
and step 3: introducing the liquid treated in the step 2 into an oxidation reaction tank 5; regulating the pH value of the mixed solution to 3 by concentrated sulfuric acid, and adding ferrous sulfate and hydrogen peroxide agents in a certain proportion respectively to ensure that hydroxyl radicals generated in the reaction process carry out oxidative degradation on organic pollutants, chromaticity and the like;
and 4, step 4: adjusting the pH value of the liquid treated in the step 3, and adjusting the pH value back to 6-9 by adding alkali liquor, so that the efficient operation of the subsequent process is ensured, and a good reaction environment is created for the rear-end chlorination reaction;
and 5: leading the liquid treated in the step 4 into a breakpoint chlorination reaction tank 14 for treatment, and adding a sodium hypochlorite solution with a certain calculated proportion to oxidize ammonia nitrogen in the percolate into N2To remove ammonia nitrogen and total nitrogen;
step 6: introducing the liquid treated in the step 5 into a filter tank 17;
and 7: and if the quality of the effluent reaches the discharge standard, discharging, otherwise, refluxing to the oxidation reaction tank 5 for further treatment.
Claims (10)
1. The utility model provides a no concentrate treatment facility suitable for low concentration landfill leachate which characterized in that: the device comprises, connected in series:
the regulating tank is used for introducing the percolate and carrying out homogenization and quantity-equalizing treatment;
the coagulation tank and the flocculation tank are matched and arranged and are used for sequentially flocculating the percolate treated by the regulating tank;
the oxidation reaction tank is used for carrying out oxidation reaction on the leachate after flocculation treatment and removing organic pollutants;
a neutralization sedimentation tank, which is used for neutralizing and sedimentating the percolate treated by the oxidation reaction tank and taking supernatant;
a turning point chlorination reaction tank for removing ammonia nitrogen in the percolate;
a filter tank for removing residual chlorine and NH in the percolate3Removing N and enabling the effluent quality to reach the discharge standard;
a dosing device is arranged by matching the regulating tank, the coagulating tank, the flocculation tank, the oxidation reaction tank, the neutralization sedimentation tank and the breakpoint chlorination reaction tank;
the treatment equipment is provided with a controller in a matching way.
2. The concentrate-free treatment plant for low-concentration landfill leachate according to claim 1, wherein: the front end cooperation of equalizing basin is equipped with into water elevator pump, the elevator pump that intakes sets up with the controller cooperation.
3. The concentrate-free treatment plant for low-concentration landfill leachate according to claim 1, wherein: and a first sedimentation tank is arranged between the flocculation tank and the oxidation reaction tank.
4. The non-concentrated liquid treatment equipment for low-concentration landfill leachate according to claim 3, wherein the non-concentrated liquid treatment equipment comprises: a first clean water tank and a pH adjusting tank are arranged between the first sedimentation tank and the oxidation reaction tank, and a dosing device and a stirring device are arranged in cooperation with the pH adjusting tank; the dosing device and the stirring device are matched with the controller; and a sludge extraction pump is arranged in cooperation with the first sedimentation tank and is arranged in cooperation with the controller.
5. The concentrate-free treatment plant for low-concentration landfill leachate according to claim 1, wherein: and a second sedimentation tank is arranged between the neutralization sedimentation tank and the breakpoint chlorination reaction tank.
6. The non-concentrated liquid treatment equipment for low-concentration landfill leachate according to claim 5, wherein the non-concentrated liquid treatment equipment comprises: and a second clean water tank is arranged between the second sedimentation tank and the breakpoint chlorination reaction tank.
7. The non-concentrated liquid treatment equipment for low-concentration landfill leachate according to claim 5, wherein the non-concentrated liquid treatment equipment comprises: and a sludge extraction pump is arranged in cooperation with the second sedimentation tank and is arranged in cooperation with the controller.
8. The concentrate-free treatment plant for low-concentration landfill leachate according to claim 1, wherein: and a third clean water tank is arranged between the breakpoint chlorination reaction tank and the filtering tank.
9. The concentrate-free treatment plant for low-concentration landfill leachate according to claim 1, wherein: the cooperation coagulating basin, flocculation basin and breakpoint chlorination reaction tank are equipped with agitating unit, agitating unit sets up with the controller cooperation.
10. The concentrate-free treatment plant for low-concentration landfill leachate according to claim 1, wherein: and a rotary fan is arranged in cooperation with the adjusting tank, the oxidation reaction tank and the neutralization sedimentation tank and is arranged in cooperation with the controller.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202023301699.5U CN214528434U (en) | 2020-12-31 | 2020-12-31 | Non-concentrated liquid treatment equipment suitable for low-concentration landfill leachate |
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| CN202023301699.5U CN214528434U (en) | 2020-12-31 | 2020-12-31 | Non-concentrated liquid treatment equipment suitable for low-concentration landfill leachate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116813046A (en) * | 2023-06-30 | 2023-09-29 | 青岛水务集团有限公司 | Treatment method of landfill leachate concentrated solution |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116813046A (en) * | 2023-06-30 | 2023-09-29 | 青岛水务集团有限公司 | Treatment method of landfill leachate concentrated solution |
| CN116813046B (en) * | 2023-06-30 | 2024-03-08 | 青岛水务集团有限公司 | Treatment method of landfill leachate concentrated solution |
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