CN203307174U - Municipal refuse leachate treatment and recycling system - Google Patents

Municipal refuse leachate treatment and recycling system Download PDF

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Publication number
CN203307174U
CN203307174U CN2013202567332U CN201320256733U CN203307174U CN 203307174 U CN203307174 U CN 203307174U CN 2013202567332 U CN2013202567332 U CN 2013202567332U CN 201320256733 U CN201320256733 U CN 201320256733U CN 203307174 U CN203307174 U CN 203307174U
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China
Prior art keywords
ammonia
nanofiltration
treatment
pond
recycling system
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Expired - Fee Related
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CN2013202567332U
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Chinese (zh)
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柴建国
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柴建国
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Priority to CN2013202567332U priority Critical patent/CN203307174U/en
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Abstract

The utility model discloses a municipal refuse leachate treatment and recycling system. The municipal refuse leachate treatment and recycling system comprises an adjusting tank, an ammonia blowing-off system, a membrane bioreactor, a nano filtering system, a reverse osmosis device and a reclaimed water pool which are connected in sequence, wherein a concentrated filtering solution outlet of the nano filtering system is connected with the adjusting tank. The system adopts a sewage treatment process comprising the steps of ammonia blowing-off, treatment by the membrane bioreactor, nano-filtration and reverse osmosis; the system has the obvious advantages in the aspects of technologies, environmental protection, engineering construction, operation cost and the like; the advantages are mainly represented that the water quality of output water is stable, the treatment efficiency is high, the amount of residual sludge is small, no odor pollution is caused, the treatment process is simple in flow, management links are few, the engineering construction investment and the operation cost are relatively low, and the adaptability to the water quality and the water yield change is strong.

Description

A kind of city garbage percolate is processed and recycling system
Technical field
The utility model relates to sewage treatment area, and particularly a kind of city garbage percolate is processed and recycling system.
Background technology
The treatment process of percolate comprises physico-chemical processes and biological process.Physico-chemical processes mainly contains the several different methods such as charcoal absorption, chemical precipitation, density separation, chemical oxidation, chemical reduction, ion-exchange, film dialysis, air lift and wet oxidation process, nanofiltration, reverse osmosis, when COD was 2000-4000mg/L, the COD clearance of physical chemistry method can reach 50%-87%.With biological treatment, compare, materialization is processed more stable, especially to BOD 5/ COD ratio is lower, and the percolate that is difficult to carry out a biological disposal upon has treatment effect preferably.But the physical chemistry method processing cost is higher, the processing of little suitable percolate, therefore, percolate mainly adopts biological process to process at present.
Biological process is divided into aerobe processing, anaerobic biological treatment and the combination of the two.Aerobic treatment comprises activated sludge process, aeration oxidation pond, blodisc and trickling filter, MBR membrane bioreactor etc.Anaerobic treatment comprises upward flow Sludge Bed, anaerobic immobilized bio-reactor, mixing tank etc.
The utility model content
The purpose of this utility model is to provide the city garbage percolate of a kind of employing " ammonia stripping+membrane bioreactor+nanofiltration+reverse osmosis " sewage treatment process to process and recycling system.
For achieving the above object, the utility model provides following technical scheme:
A kind of city garbage percolate is processed and recycling system, comprises the equalizing tank, ammonia blow-removing system, membrane bioreactor, nanofiltration system, reverse osmosis unit and the middle pond that connect successively, and the dense filtrate outlet of described nanofiltration system is connected with equalizing tank.
Described ammonia blow-removing system comprises stripping tower, absorption tower, sulfuric acid pond, pond for recovering, centrifugal blower, described centrifugal blower is connected with the blast inlet of stripping tower bottom, the ammonia outlet at stripping tower top connects the ammonia import of bottom, absorption tower, the sulfuric acid import at top, absorption tower is connected with the sulfuric acid outlet of bottom, sulfuric acid pond, and the bottom solution outlet on absorption tower is connected to pond for recovering.
Described nanofiltration system comprises one-level nanofiltration device in parallel and secondary nanofiltration device, also is provided with serial pipe between one-level nanofiltration device and secondary nanofiltration device.
Compared with prior art, the beneficial effects of the utility model are: this system adopts the sewage treatment process of " ammonia stripping+membrane bioreactor+nanofiltration+reverse osmosis ", this system has obvious advantage at aspects such as technology, environmental protection, engineering construction, working costs, main manifestations is stable effluent quality, processing efficiency is high, excess sludge is few, without foul smell pollute, processing technological flow is simple, management link is few, engineering construction investment, working cost is relatively low and strong adaptability that water quality, the water yield are changed.
The accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structured flowchart of the disclosed a kind of city garbage percolate processing of the utility model embodiment and recycling system.
Fig. 2 is the structured flowchart of the disclosed a kind of ammonia blow-removing system of the utility model embodiment.
Fig. 3 is the structured flowchart of the disclosed a kind of nanofiltration system of the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making under the creative work prerequisite the every other embodiment obtained, and all belong to the scope of the utility model protection.
Refer to Fig. 1, a kind of city garbage percolate is processed and recycling system, comprise the equalizing tank 1, ammonia blow-removing system 2, membrane bioreactor 3, nanofiltration system 4, reverse osmosis unit 5, the middle pond 6 that connect successively, also comprise sludge treating system 7 and landfill yard 8.
Principle of work of the present utility model is: the ammonia nitrogen for percolate is too high, and the utility model arranges ammonia blow-removing system 2 before membrane bioreactor 3, reduces ammonia-nitrogen content in percolate.As shown in Figure 2, in stripping tower 21, percolate is entered in tower by tower top, by centrifugal blower 25 air feed at the bottom of tower, upward motion of air; Gas phase contacts in tower with liquid phase, and the ammonia in percolate is gone out by stripping, is overflowed by tower top; The ammonia of overflowing is entered in tower by 22 bottoms, absorption tower, moves upward, and the acid solution in sulfuric acid pond 23 is entered in tower by 22 tops, absorption tower simultaneously, and acid solution is motion downwards in tower; Gas phase and liquid phase be 22 interior contacts on absorption tower, and chemical reaction occurs, and resultant is flowed in pond for recovering 24 by tower bottom; The percolate flowed out by stripping tower 21 bottoms enters membrane bioreactor 3.The biochemical removal of membrane bioreactor 3 can biochemical organism and ammonia nitrogen, and impurity and mud enter sludge treating system 7, and the mud after sludge treating system 7 is processed is sent into landfill yard 8, and supernatant liquor is delivered to equalizing tank 1.Membrane bioreactor 3 water outlets enter nanofiltration system 4, by nanofiltration remove can not be biochemical organism.As shown in Figure 3, described nanofiltration system 4 comprises one-level nanofiltration device 41 in parallel and secondary nanofiltration device 42, between one-level nanofiltration device 41 and secondary nanofiltration device 42, also be provided with serial pipe, the purpose of the nanofiltration device that setting can and can be gone here and there is the operation in order to guarantee that the nanofiltration treatment system is more reliable and secure, when one-level went wrong, another level still can work; When operation water quality is poor, two-stage series connection can be moved, guarantee the stable influent quality of subsequent disposal system.Dense filtrate after nanofiltration is back to equalizing tank 1; Clear water after nanofiltration enters middle pond 6 through reverse osmosis unit 5, can reuse up to standard.
To those skilled in the art, obviously the utility model is not limited to the details of above-mentioned one exemplary embodiment, and in the situation that do not deviate from spirit of the present utility model or essential characteristic, can realize the utility model with other specific form.Therefore, no matter from which point, all should regard embodiment as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims rather than above-mentioned explanation, therefore is intended to include in the utility model dropping on the implication that is equal to important document of claim and all changes in scope.Any Reference numeral in claim should be considered as limit related claim.
In addition, be to be understood that, although this specification sheets is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of specification sheets is only for clarity sake, those skilled in the art should make specification sheets as a whole, and the technical scheme in each embodiment also can, through appropriate combination, form other embodiments that it will be appreciated by those skilled in the art that.

Claims (3)

1. a city garbage percolate is processed and recycling system, it is characterized in that, comprise the equalizing tank, ammonia blow-removing system, membrane bioreactor, nanofiltration system, reverse osmosis unit and the middle pond that connect successively, the dense filtrate outlet of described nanofiltration system is connected with equalizing tank.
2. city garbage percolate according to claim 1 is processed and recycling system, it is characterized in that, described ammonia blow-removing system comprises stripping tower, absorption tower, sulfuric acid pond, pond for recovering, centrifugal blower, described centrifugal blower is connected with the blast inlet of stripping tower bottom, the ammonia outlet at stripping tower top connects the ammonia import of bottom, absorption tower, the sulfuric acid import at top, absorption tower is connected with the sulfuric acid outlet of bottom, sulfuric acid pond, and the bottom solution outlet on absorption tower is connected to pond for recovering.
3. city garbage percolate according to claim 1 is processed and recycling system, it is characterized in that, described nanofiltration system comprises one-level nanofiltration device in parallel and secondary nanofiltration device, also is provided with serial pipe between one-level nanofiltration device and secondary nanofiltration device.
CN2013202567332U 2013-05-13 2013-05-13 Municipal refuse leachate treatment and recycling system Expired - Fee Related CN203307174U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013202567332U CN203307174U (en) 2013-05-13 2013-05-13 Municipal refuse leachate treatment and recycling system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013202567332U CN203307174U (en) 2013-05-13 2013-05-13 Municipal refuse leachate treatment and recycling system

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CN203307174U true CN203307174U (en) 2013-11-27

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107129107A (en) * 2017-06-05 2017-09-05 安徽普朗膜技术有限公司 A kind of recovery and processing system of percolate
CN107176750A (en) * 2017-05-18 2017-09-19 同济大学 A kind of livestock and poultry farm biogas slurry film concentrates preprocess method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107176750A (en) * 2017-05-18 2017-09-19 同济大学 A kind of livestock and poultry farm biogas slurry film concentrates preprocess method
CN107129107A (en) * 2017-06-05 2017-09-05 安徽普朗膜技术有限公司 A kind of recovery and processing system of percolate

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C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20131127

Termination date: 20140513