CN212532654U

CN212532654U - Outer reflux system of landfill leachate ultrafiltration device

Info

Publication number: CN212532654U
Application number: CN202020860796.9U
Authority: CN
Inventors: 李俊红; 盛技科; 王鹏举
Original assignee: Henan Hongpeng Environmental Protection Engineering Co ltd
Current assignee: Henan Hongpeng Environmental Protection Engineering Co ltd
Priority date: 2020-05-20
Filing date: 2020-05-20
Publication date: 2021-02-12
Anticipated expiration: 2030-05-20

Abstract

The utility model relates to an outer return-flow system of landfill leachate ultrafiltration device, including the equalizing basin, the equalizing basin intercommunication has first AO reaction tank, first AO reaction tank intercommunication has second AO reaction tank, second AO reaction tank intercommunication has the filter, the filter intercommunication has the ultrafiltration intake pump, ultrafiltration intake pump one side is provided with ultrafiltration device, the ultrafiltration intake pump with be provided with the intercommunication pipeline between the ultrafiltration device, the intercommunication the ultrafiltration intake pump with be provided with return line on ultrafiltration device's the intercommunication pipeline, the return line free end with second AO reaction tank intercommunication sets up. The utility model discloses a set up backflow pipeline between ultrafiltration intake pump and ultrafiltration device, can realize that landfill leachate can realize the backward flow not through ultrafiltration system in equipment backward flow debugging stage to the energy loss in debugging stage has been saved.

Description

Outer reflux system of landfill leachate ultrafiltration device

Technical Field

The utility model relates to a sewage treatment system field especially relates to a landfill leachate ultrafiltration device external reflux system.

Background

Landfill leachate (also called landfill leachate) refers to a black-brown red aqueous solution seeped from a landfill site, and is used as a byproduct in a garbage treatment process, and the problem of the landfill leachate seriously influences the healthy development of the garbage treatment industry in China. Existing waste treatment facilities, including landfills, incinerators, waste transfer stations, yards, and composts, produce large quantities of leachate. The landfill leachate is high-concentration organic wastewater, the components of the landfill leachate are complex, and the water quality and the water quantity change greatly, so the landfill leachate problem becomes a bottleneck of the landfill industrialization process, and the environmental safety around a landfill disposal facility and the healthy life of residents are seriously threatened.

In order to solve the problems, the Chinese patent with the publication number of CN203048741U discloses a high-efficiency treatment system for landfill leachate, which comprises an adjusting tank, an A/O reaction tank, a pipeline filter, an ultrafiltration membrane component, an ultrafiltration water tank, a security filter, a nanofiltration component, a sludge tank and a plate-and-frame filter press; the A/O reaction tank, the ultrafiltration membrane component and the nanofiltration component are respectively provided with a sludge water outlet, and the sludge tank is provided with a supernatant outlet; the sludge outlet of the A/O reaction tank is connected with a sludge tank, and the supernatant outlet of the sludge tank is connected with an adjusting tank; the sewage outlet of the ultrafiltration membrane component is connected with a circulating water pump and is pumped back to the pipeline filter; and a sewage outlet of the sodium filter assembly is connected with the regulating tank.

Above-mentioned scheme still has following problem, when carrying out ultrafiltration technology, often need open the hyperfiltration intake pump and debug, and in the hyperfiltration debugging in-process, landfill leachate can only flow back to in the AO reaction tank after can getting into among the ultrafiltration device, because ultrafiltration system energy consumption is too high, such debugging process need consume great energy consumption.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a landfill leachate ultrafiltration device external reflux system through set up the backflow pipeline between ultrafiltration intake pump and ultrafiltration device, can realize that landfill leachate can realize the backward flow through ultrafiltration system not in equipment backward flow debugging stage to the energy loss in debugging stage has been saved.

The utility model aims at realizing through the following technical scheme:

the utility model provides an outer return-flow system of landfill leachate ultrafiltration device, includes the equalizing basin, the equalizing basin intercommunication has first AO reaction tank, first AO reaction tank intercommunication has second AO reaction tank, second AO reaction tank intercommunication has the filter, the filter intercommunication has the ultrafiltration intake pump, ultrafiltration intake pump one side is provided with ultrafiltration device, the ultrafiltration intake pump with be provided with the intercommunication pipeline between the ultrafiltration device, the intercommunication the ultrafiltration intake pump with be provided with the backflow pipeline on ultrafiltration device's the intercommunication pipeline, the backflow pipeline free end with second AO reaction tank intercommunication sets up.

By adopting the technical scheme, the garbage treatment liquid is subjected to water quality and water quantity adjustment after entering the regulating tank, then the garbage treatment liquid sequentially enters the first A/O reaction tank and the second A/O reaction tank, the two-stage A/O reaction tank can be used for carrying out denitrification and digestion reaction treatment on the garbage percolate for two times, thereby improving the control of the total nitrogen content in the landfill leachate, then the landfill leachate is primarily filtered by a filter, under the action of the ultrafiltration filter pump, the garbage percolate flows to the ultrafiltration device and flows to the second A/O reaction tank in the return pipe to realize return flow, in the debugging stage, the staff closes the debugging valve, at the moment, the landfill leachate can directly realize backflow along the backflow pipeline, thereby avoiding the situation that the ultrafiltration device needs to be turned on in the debugging stage to cause the white consumption of energy.

The utility model discloses further set up to: and a three-way joint is arranged on the communication pipeline corresponding to the position of the return pipeline, and the return pipeline is communicated with the three-way joint.

Through adopting above-mentioned technical scheme, tee joint's setting can realize the dismantlement to communicating pipe and backflow pipeline, because the damaged condition of leaking of spilling easily appears in the pipe connection department, tee joint's setting can be changed backflow pipeline, communicating pipe or time tee joint when backflow pipeline and communicating pipe intercommunication position go wrong, and arbitrary department appears the damaged condition that needs all change backflow pipeline and communicating pipe when having avoided backflow pipeline and the integrative setting of communicating pipe and takes place.

The utility model discloses further set up to: the communicating pipeline is provided with a plurality of three-way joints, and the three-way joints are provided with the return pipelines.

Through adopting above-mentioned technical scheme, the control that the backward flow volume increased can be realized through the quantity that increases the backward flow pipeline in the setting of a plurality of backflow pipeline, and when needs high backward flow volume, the staff can open the butterfly valve on a plurality of backflow pipeline to realize the backward flow of a plurality of backflow pipeline, when need not use too much backflow pipeline, the butterfly valve on the backflow pipeline that will correspond not to use is closed can.

The utility model discloses further set up to: and a check valve is arranged on the backflow pipeline.

Through adopting above-mentioned technical scheme, the setting of check valve can prevent landfill leachate's adverse current.

The utility model discloses further set up to: and a flowmeter is arranged on the backflow pipeline.

Through adopting above-mentioned technical scheme, the setting of flowmeter can make things convenient for the staff to carry out real-time detection to the backward flow volume of every back flow to more clear control landfill leachate's backward flow volume.

The utility model discloses further set up to: the return pipe is provided with a return pump.

Through adopting above-mentioned technical scheme, the setting of backwash pump can make things convenient for the further increase backward flow volume of staff according to the demand.

The utility model discloses further set up to: the filter is a bag filter.

By adopting the technical scheme, the bag filter is convenient for workers to take down the filter bag for cleaning work because the filter bag is detachably arranged inside the bag filter.

The utility model discloses further set up to: the first A/O reaction tank and the second A/O reaction tank are arranged in a closed mode, gas collecting pipelines are arranged on the first A/O reaction tank and the second A/O reaction tank, and the gas collecting pipelines are communicated with a combustion chamber.

By adopting the technical scheme, when the landfill leachate is treated in the first A/O reaction tank and the second A/O reaction tank, redundant biogas capable of emitting malodor can be generated, if the biogas is directly discharged into the outside air, adverse effects can be caused to the surrounding environment and people, and the biogas is introduced into the combustion chamber to be subjected to centralized combustion treatment, so that the biogas can be subjected to environment-friendly treatment.

To sum up, the utility model discloses a beneficial technological effect does:

the first A/O reaction tank and the second A/O reaction tank are arranged in a closed mode, gas collecting pipelines are arranged on the first A/O reaction tank and the second A/O reaction tank, and the gas collecting pipelines are communicated with a combustion chamber.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

In the figure, 1, a regulating reservoir; 2. a first A/O reaction tank; 3. a second A/O reaction tank; 4. a filter; 5. an ultra-filtration water inlet pump; 6. an ultrafiltration device; 7. a communicating pipe; 8. a return line; 9. debugging a valve; 10. a three-way joint; 11. a butterfly valve; 12. a check valve; 13. a flow meter; 14. a reflux pump; 15. and a pipeline thereof; 16. a combustion chamber.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses an outer reflux system of landfill leachate ultrafiltration device, including equalizing basin 1, equalizing basin 1 intercommunication has first AO reaction tank 2, first AO reaction tank 2 intercommunication has second AO reaction tank 3, second AO reaction tank 3 intercommunication has bag filter 4, filter 4 intercommunication has the ultrafiltration intake pump, ultrafiltration intake pump one side is provided with ultrafiltration device 6, be provided with communicating pipe 7 between ultrafiltration intake pump and the ultrafiltration device 6, be provided with backflow pipeline 8 on communicating pipe 7 of intercommunication ultrafiltration intake pump and ultrafiltration device 6, it is provided with three way connection 10 to correspond backflow pipeline 8 position on the communicating pipe 7, backflow pipeline 8 and three way connection 10 intercommunication setting, backflow pipeline 8 free end and second AO reaction tank 3 intercommunication setting. The garbage treatment liquid enters the regulating tank 1 and then is subjected to water quality and water quantity regulation, then the garbage treatment liquid sequentially enters the first A/O reaction tank 2 and the second A/O reaction tank 3, the two-stage A/O reaction tanks can be arranged to perform denitrification and digestion reaction treatment on the garbage percolate for two times, thereby improving the control of the total nitrogen content in the landfill leachate, then the landfill leachate is primarily filtered through the filter 4, under the action of the ultrafiltration pump, the landfill leachate flows to the ultrafiltration device 6 and flows to the second A/O reaction tank 3 in the return pipe to realize the return flow, in the debugging stage, the staff closes the debugging valve 9, at the moment, the landfill leachate can directly realize the backflow along the backflow pipeline 8, thereby avoiding the situation that the ultrafiltration device 6 needs to be turned on in the debugging stage, which results in the white consumption of energy.

Referring to fig. 1, in the ultrafiltration treatment of landfill leachate, dirt in the landfill leachate forms a dirt layer on an ultrafiltration membrane in an ultrafiltration system, when the dirt layer is thick, the reflux circulation amount needs to be increased to reduce the thickness of the dirt layer, and in the actual use process, the reflux amount is required to reach 8 times or 10 times or even higher times, so that the reflux amount needs to be flexibly controlled. The communicating pipeline 7 is provided with a plurality of three-way joints 10, the three-way joints 10 are all provided with return pipelines 8, and the return pipelines 8 are all provided with butterfly valves 11. A check valve 12 is arranged in each return line 8, which return line is provided with a return pump 14. The arrangement of the plurality of backflow pipelines 8 can realize the control of the increase of the backflow amount by increasing the number of the backflow pipelines 8, when high backflow amount is needed, a worker can open the butterfly valves 11 on the plurality of backflow pipelines 8 so as to realize the backflow of the plurality of backflow pipelines 8, and when the excessive backflow pipelines 8 are not needed, the butterfly valves 11 on the corresponding backflow pipelines 8 which are not needed to be used are closed; the check valve 12 can prevent the reverse flow of the landfill leachate; the arrangement of the reflux pump 14 can facilitate the further increase of reflux quantity according to the requirement of workers. At the same time, a flow meter 13 is arranged on the return line 8 in order to monitor the return flow in each return line 8 in real time.

Referring to fig. 1, considering that when landfill leachate is treated in the first a/O reaction tank 2 and the second a/O reaction tank 3, redundant biogas emitting malodor is generated, and if the biogas is directly discharged to the outside air, adverse effects are caused to the surrounding environment and people, the first a/O reaction tank and the second a/O reaction tank 3 are both sealed, and gas collecting pipes are disposed on the first a/O reaction tank and the second a/O reaction tank 3 and communicated with the combustion chamber 16. The biogas is led into the combustion chamber 16 to be intensively combusted, so that the biogas can be treated in an environment-friendly way.

The implementation principle of the embodiment is as follows: when the staff debugs ultrafiltration device 6's backward flow volume before opening ultrafiltration system, the staff can close debugging valve 9, butterfly valve 11 on the backflow pipeline 8 that will correspond quantity simultaneously according to the demand is opened, later open the ultrafiltration intake pump, landfill leachate gets into communicating pipe 7 after handling in equalizing basin 1 and first AO reaction tank and second AO reaction tank 3, and flow back to in second AO reaction tank 3 along backflow pipeline 8, thereby accomplish the backward flow debugging, when needing great backward flow volume, the staff can open backflow pump 14, thereby the backward flow is with higher speed.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a landfill leachate ultrafiltration device external reflux system which characterized in that: comprises an adjusting tank (1), the adjusting tank (1) is communicated with a first A/O reaction tank (2), the first A/O reaction tank (2) is communicated with a second A/O reaction tank (3), the second A/O reaction tank (3) is communicated with a filter (4), the filter (4) is communicated with an ultrafiltration water inlet pump, an ultrafiltration device (6) is arranged on one side of the ultrafiltration water inlet pump, a communicating pipeline (7) is arranged between the ultrafiltration water inlet pump and the ultrafiltration device (6), a backflow pipeline (8) is arranged on the communicating pipeline (7) communicating the ultrafiltration water inlet pump and the ultrafiltration device (6), the free end of the return pipeline (8) is communicated with the second A/O reaction tank (3), and a debugging valve (9) is arranged on one side of the communication pipeline (7) close to the ultrafiltration device (6).

2. The external reflux system of the landfill leachate ultrafiltration device of claim 1, wherein: the communication pipeline (7) is provided with a three-way joint (10) corresponding to the position of the backflow pipeline (8), and the backflow pipeline (8) is communicated with the three-way joint (10).

3. The external reflux system of the landfill leachate ultrafiltration device of claim 2, wherein: the connecting pipeline (7) is provided with a plurality of three-way joints (10), the three-way joints (10) are provided with the backflow pipeline (8), and the backflow pipeline (8) is provided with butterfly valves (11).

4. The external reflux system of the landfill leachate ultrafiltration device of claim 3, wherein: and a check valve (12) is arranged on the return pipeline (8).

5. The external reflux system of the landfill leachate ultrafiltration device of claim 4, wherein: and a flowmeter (13) is arranged on the return pipeline (8).

6. The external reflux system of the landfill leachate ultrafiltration device of claim 5, wherein: the return pipe is provided with a return pump (14).

7. The external reflux system of the landfill leachate ultrafiltration device of claim 6, wherein: the filter (4) adopts a bag filter (4).

8. The external reflux system of the landfill leachate ultrafiltration device of claim 6, wherein: the first A/O reaction tank (2) and the second A/O reaction tank (3) are arranged in a closed mode, gas collecting pipelines are arranged on the first A/O reaction tank and the second A/O reaction tank (3) and communicated with a combustion chamber (16).