CN206127033U - Leachate treatment system of landfill yard - Google Patents

Leachate treatment system of landfill yard Download PDF

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Publication number
CN206127033U
CN206127033U CN201621076848.3U CN201621076848U CN206127033U CN 206127033 U CN206127033 U CN 206127033U CN 201621076848 U CN201621076848 U CN 201621076848U CN 206127033 U CN206127033 U CN 206127033U
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CN
China
Prior art keywords
pretreatment
ultrafiltration
layer
liquid treating
percolation liquid
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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.)
Expired - Fee Related
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CN201621076848.3U
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Chinese (zh)
Inventor
李军
马利海
罗佳妮
李娟�
鲁晓雯
刘书均
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Ningxia Hui Autonomous Region Solid Waste And Chemicals Authority
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Ningxia Hui Autonomous Region Solid Waste And Chemicals Authority
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Priority to CN201621076848.3U priority Critical patent/CN206127033U/en
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Publication of CN206127033U publication Critical patent/CN206127033U/en
Expired - Fee Related legal-status Critical Current
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Abstract

The utility model provides a processing system of landfill yard filtration liquid. This system is by pretreatment systems, just the system of straining, governing system, ultrafiltration system constitute. Handling through utilizing pretreatment systems chinese railway, charcoal, acid solution to carry out earlier stage with filtration liquid stoste, purifying, the poisonous chemical in water and the adsorbed water is got rid of to the lime stone, active carbon etc. That fully use the first system of straining, through governing system to after pretreatment systems, the regulation of the reaction solution pH value after the system of straining etc. Just, recycle the membrane technology in the ultrafiltration system, ensure that leachate treatment each item is up to standard, reach the purification purpose. This leachate treatment system possesses simple process, fast, the efficient beneficial effect of processing speed.

Description

A kind of percolation liquid treating system of landfill yard
Technical field
The utility model is related to a kind of technology of garbage disposal, more particularly to a kind of landfill percolate processing structure.
Background technology
Percolate, refers to during stacking and filling domestic waste, due to surface water and groundwater Immersion, precipitation wash away and waste water that the effect such as fermentable is converged and come.Just from the point of view of domestic situation, China is total about 1000 garbage sanitary filling fields, produce daily about 40000-80000m3The percolate of/d.Due to wherein containing a large amount of difficult The organic matter of degraded, Toxic, heavy metal ion and inorganic matter etc. and the often referred to as organic wastewater of difficult degradation.From current city From the point of view of the disposition of city's rubbish, garbage loading embeading not only occupies a large amount of preciousness soils, and the percolate for producing is caused sternly The border pollution of weight ring.Therefore, the percolate how produced by efficient process house refuse is realistic problem urgently to be resolved hurrily.
Percolate composition is sufficiently complex, has containing fragrant footpath, heterocyclic compound, halides, alkane and alkene etc. are various Machine thing, and salinity height, ammonia nitrogen concentration are high.Show according to the materials of identification, there are about nearly 100 kinds of organic matters (as naphthalene, anthracene, pyrene, paracresol, Chlorobenzene, ethane, methylamine, ethamine, phenylacetic acid etc.) it is dissolved in percolate, although and Single Pollution thing concentration is high, but due to it In pollutant component it is complicated, cause COD concentration therein relatively large, 20 gas chromatography therein is listed in the world Environment Priority controls pollutant.
The subject matter that currently the existing refuse leachate treatment technology of China is present is mainly manifested in three below aspect:
1st, the active sludge treatment of percolate is inefficient
For the process of percolate, main, most economical and efficient processing method remains activated sludge Method.But because the water quality characteristic of percolate is different from municipal sewage, with the prolongation of landfill time, its biochemical is reduced, In the later stage of landfill, because B/C is down to 0.1, biodegradability is very poor, also causes the concentration of activated sludge in percolation liquid treating system not Height, the treatment effeciency of activated sludge is low.
To improve activated sludge treatment effeciency, just must take pretreatment physical technique or advanced oxidation processes with Reduce waste water in material toxicity, remove difficult degradation organic substance, mitigate biological treatment organic loading, so as to for activity dirt The propagation of mud creates good environment;In addition, liquid or dry live microorganism method (LLMO) also can improve with enhanced biological to percolate Degradation property.
2nd, percolate ammonia nitrogen concentration content is higher
Ammonia nitrogen concentration in percolate is too high, will produce suppression to the biochemical action of microorganism, therefore need to be to rubbish Percolate carries out physico-chemical process (blow-off method and biological deamination method) and removes ammonia nitrogen.At present the principal mode of blow-off method has aeration tank, blows Three kinds of de- tower and rectifying column.
3rd, percolate contains high-concentration hardly-degradable organic pollution
The percolate produced during garbage loading embeading contains dense, difficult degradation organic pollution;With This is simultaneously as biological agent can also produce the organic metabolites of some difficult degradations.These persistent organic pollutants are given birth to The property changed is very poor, it is difficult to only directly up to standard using biological treatment process.High concentration, hardly degraded organic substance minimizing technology are a lot, Mainly there are hyperfiltration, chemical oxidization method, active carbon adsorption and Coagulation Method etc.;But the operating cost of these methods all phases To higher.
The content of the invention
The utility model is directed to the deficiencies in the prior art, there is provided a kind of processing system of landfill percolate.Should System possesses process is simple, the beneficial effect of high treating effect.The utility model is realized by following technological means:
A kind of percolation liquid treating system of landfill yard, mainly by pretreatment system, initial filter system, regulating system, ultrafiltration system System is constituted.
Pretreatment system top is provided with flusher, one kind equipped with hypochlorite solution or oxalic acid solution in flusher Or two kinds, pretreatment system middle part is covered with filter screen, and wood fragments and activated carbon are covered with filter screen, and pretreatment system bottom is covered with metallic iron Powder.Pretreatment system is drenched by the waste layer that metal iron powder, suitable hypochlorite solution or oxalic acid solution pass sequentially through mineralising In being sprinkled upon percolate stoste.Because iron powder is immersed in waste water solution, it is rich in carbon in filter screen, acid solution hydrogen ion promotes The migration of ion, pure iron is anode, and cementite and impurity become negative electrode, and internal cell reaction occurs, and is constituted micro- inside iron Battery.Pretreatment system promotees in the cell circuit for making full use of metal iron powder to be formed in Carbon Materials under the conditions of sour environment Make some of waste water organic principle that redox reaction to occur, macromolecular substances are cracked into into small molecule, by difficult degradation group Degradable group is converted into, the biodegradability of waste water is improved.Enter after the preprocessed system early stage pretreatment of percolate stoste Initial filter system.
Initial filter system has two-layer.Ground floor is boulder bed, and the second layer is lime stone and active carbon layer, is soil between two-layer Work composite drainage network.The lime stone being provided with plays a part of noxious material in eliminating water, and activated carbon can not only adsorb having in water Malicious chemical substance, can also adsorb the toxic gas produced in rubbish place, and the layered design of initial filter system has effectively intercepted big Grain material, it is to avoid because blocking causes ponding in layer too many, filtrate after permeable formation filtration by, into collector pipe, then outwards arranging Go out, so as to reach the purpose of purification.
Regulating system main purpose is to adjust the reaction solution after preprocessed system, initial filter system, is added by feed pump Add water, sodium chloride, in being mixed in tank.The filtrate of preliminary purification is squeezed into into ultrafiltration system when pH value is between 6-8.Adjust System includes tank, feed pump, draining tube bank.
Ultrafiltration system mainly carries out deep purifying to filtrate again using membrane technology, processes.Ultrafiltration system is provided with film purification Device, booster pump, pond of being exposed to the sun.Film purifying device belongs to prior art, is conventional equipment.Backwashed by ultrafiltration system booster pump Water, recharge, further by leachate purification, until meeting national standard, is finally discharged into and is exposed to the sun in pond, is reprocessed.
Description of the drawings
Fig. 1 is a kind of percolation liquid treating system schematic diagram of landfill yard, and its digital code meaning is respectively:1:Pretreatment system System;2:Flusher;3:Filter screen;4:Metal iron powder;5:Initial filter system;6:Boulder bed;7:Lime stone and active carbon layer;8:Adjust System;9:Feed pump;10:Draining is restrained;11:Tank;12:Ultrafiltration system;13:Booster pump;14:Film purifying device;15:It is exposed to the sun Pond.
Specific embodiment
Below in conjunction with the accompanying drawings, the utility model is specifically introduced.
The percolation liquid treating system of the utility model landfill yard is according to pretreatment system (1), initial filter system (5), regulation system System (8), ultrafiltration system (12) are sequentially built.The percolate stoste woods of discharge is sprinkled upon in pretreatment system, in pretreatment system The collective effect such as iron powder, hypochlorite solution, Carbon Materials under, acid solution hydrogen ion promotes the migration of ion, and pure iron is sun Pole, cementite and impurity become negative electrode, and internal cell reaction occurs, and constitute the micro cell inside iron.Pretreatment system will divide greatly Sub- material is cracked into small molecule, and difficult degradation group is converted into after degradable group into the initial filter system (5) that enters.Initial filter system is total to There is two-layer.Ground floor is boulder bed (6), and the second layer contains lime stone, activated carbon (7), is soil engineering composite drainage network between two-layer. Lime stone plays a part of noxious material in eliminating water, and activated carbon can not only adsorb the toxic chemical substance in water, also can adsorb The toxic gas produced in rubbish place, the layered design of initial filter system effectively intercepted large particulate matter, it is to avoid because of blocking Cause ponding in layer too many, filtrate enters collector pipe (10) after permeable formation filtration, then discharges, net so as to reach The purpose of change.Regulating system main purpose is to adjust the reaction solution after preprocessed system, initial filter system, by feed pump (9) water, sodium chloride are added, in being mixed in tank (11).The filtrate of preliminary purification is squeezed into into ultrafiltration when pH value is between 6-8 System (12).Ultrafiltration system mainly carries out deep purifying to filtrate again using film purifying device (14), processes.By ultrafiltration system System booster pump (13) backwashing water, recharge, further by leachate purification, until meeting national standard, is finally discharged into and is exposed to the sun In pond (15).Percolate after purified treatment meets relevant criterion and regulation.Purification efficiency is significantly improved.

Claims (4)

1. a kind of percolation liquid treating system of landfill yard, it is characterised in that the percolation liquid treating system by pretreatment system, just Filter system, regulating system, ultrafiltration system are constituted;The pretreatment system top is provided with flusher, equipped with secondary in flusher Solution chlorate or oxalic acid solution one or two, pretreatment system middle part be covered with filter screen, wood fragments and activity are covered with filter screen Charcoal, pretreatment system bottom is covered with metal iron powder.
2. percolation liquid treating system according to claim 1, it is characterised in that the initial filter system is provided with two-layer, ground floor For boulder bed, the second layer is lime stone and active carbon layer, is soil engineering composite drainage network between two-layer.
3. percolation liquid treating system according to claim 1, it is characterised in that the regulating system includes tank, feedwater Pump, draining tube bank.
4. percolation liquid treating system according to claim 1, it is characterised in that the ultrafiltration system be provided with film purifying device, Booster pump, pond of being exposed to the sun.
CN201621076848.3U 2016-09-26 2016-09-26 Leachate treatment system of landfill yard Expired - Fee Related CN206127033U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621076848.3U CN206127033U (en) 2016-09-26 2016-09-26 Leachate treatment system of landfill yard

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621076848.3U CN206127033U (en) 2016-09-26 2016-09-26 Leachate treatment system of landfill yard

Publications (1)

Publication Number Publication Date
CN206127033U true CN206127033U (en) 2017-04-26

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Application Number Title Priority Date Filing Date
CN201621076848.3U Expired - Fee Related CN206127033U (en) 2016-09-26 2016-09-26 Leachate treatment system of landfill yard

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108821470A (en) * 2018-06-28 2018-11-16 湖州同成环境科技有限公司 A kind of deep purification of waste water device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108821470A (en) * 2018-06-28 2018-11-16 湖州同成环境科技有限公司 A kind of deep purification of waste water device
CN108821470B (en) * 2018-06-28 2021-10-15 湖州同成环境科技有限公司 Deep sewage purification device

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Granted publication date: 20170426

Termination date: 20170926