CN205152002U - Landfill leachate treatment device - Google Patents
Landfill leachate treatment device Download PDFInfo
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- CN205152002U CN205152002U CN201520905533.4U CN201520905533U CN205152002U CN 205152002 U CN205152002 U CN 205152002U CN 201520905533 U CN201520905533 U CN 201520905533U CN 205152002 U CN205152002 U CN 205152002U
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- tank
- leachate treatment
- treatment
- treatment device
- reverse osmosis
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Abstract
The utility model discloses a landfill leachate treatment device, the device include filtration liquid equalizing basin, causticization pond, aeration tank, sedimentation tank, filtering ponds, receive and strain device, reverse osmosis unit and outlet water pool, and each device loops through the pipe connection, causticization pond, aeration tank and as an organic wholeization of sedimentation tank equipment. Integration equipment collects the materialization process and nitrifies denitrification process in an organic whole, and the better living environment of having maintain anaerobism, hold concurrently oxygen, aerobic bacteria crowd has increased the ability of the various organic matters of degrading, simultaneously, improvement that filtering ponds behind the sedimentation tank and membrane processing apparatus are very big play water quality of water, improved water emission standard.
Description
Technical field
The utility model relates to field of garbage disposal, especially relates to a kind of garbage leachate treatment device.
Background technology
Along with the quickening of Economic development and urbanization process, the output of domestic waste is sharply increasing.According to the principle of China's refuse treatment " innoxious, minimizing, resource utilization ", large quantities of Sanitary Landfill will be had newly-built.And whether percolate processes qualified discharge, it is one of important indicator whether measurement landfill yard is qualified.
Percolate is mainly derived from three parts, namely sanitary sewage itself contain with landfill process in there is moisture that anaerobe reaction generates, rainwater catchment in landfill district and shallow layer surface wandering water.Percolate complicated, containing many harmful organic compound and heavy metal.Measure according to the sampling of a collection of percolate from garbage filling field of northern area, organic pollutant reaches kind more than 100, is wherein difficult to biodegradable heterocyclic compound and long chain organic compound containing nearly 20 kinds.Percolate organic concentration and ammonia nitrogen concentration are all very high, belong to typical difficult high-concentration waste water.
Garbage percolation liquid treating system device mainly comprises equalizing tank, causticization pond, aeration tank, membrane treatment appts.Wherein mainly carry out pre-treatment in equalizing tank, pre-treatment comprises biological process, Physical, chemical method etc., mainly removes ammonia nitrogen and inorganic impurity, or improves the biodegradability of percolate; Biochemical treatment is mainly carried out in causticization pond and aeration tank, and biochemical treatment comprises anaerobic process, aerobic method etc., the organic pollutant and ammonia nitrogen etc. of handling object mainly in percolate; Membrane treatment appts mainly carries out advanced treatment, and advanced treatment apparatus mainly adopts the devices such as nanofiltration, reverse osmosis, adsorption filtration, mainly removes the suspended substance in percolate, difficult raw degradation of organic substances and colloid etc.The shortcoming of existing apparatus is: (1) causticization pond is connected by pipeline with aeration tank, and reaction distance is long causes biochemical treatment efficiency low, and partial organic substances is difficult to be degraded by this device process; (2) problems such as the membrane element vulnerable to pollution in membrane separation unit, replacement cycle concentrated solution that is short, membrane sepn generation get nowhere, finally cause percolate processing cost higher.Therefore, the percolate treatment unit researching and developing functions such as a kind ofly having that biochemical treatment efficiency is high, membrane separation unit membrane element life cycle is long is urgently to be resolved hurrily.
Utility model content
In order to solve the above-mentioned problems in the prior art, the utility model provides a kind of garbage leachate treatment device, efficiently solves the short slab of prior art, guarantees that water outlet reaches emission standard.
Technical scheme adopted for achieving the above object is: a kind of garbage leachate treatment device, comprise leachate equalization basin, causticization pond, aeration tank, settling tank, filtering basin, nanofiltration device, reverse osmosis unit and outlet sump, each device is connected by pipeline successively, described causticization pond, aeration tank and the integrated equipment of settling tank.Described integration apparatus integrates materializing procedure and nitration denitrification process, integrate causticizing reaction, anaerobism, anoxic, aerobic, pump around circuit, maintain the living environment of anaerobism, double oxygen, aerobic flora preferably, form a complete ecotope, various microorganism species collaborative work, add the various organic ability of degraded, described nanofiltration device and reverse osmosis unit are all provided with cleaning device, and this cleaning device effectively improves separation performance, reduction membrane element replacement frequency, the raising effluent quality of device membrane element.
Described cleaning device cleans nanofiltration device and reverse osmosis unit with the water containing clean-out system and sterilant.When equipment normally runs, preset by system, auto-flushing will be carried out at interval of for some time (general 3-6 hour), this cleaning process effectively can carry out sterilization, cleaning etc. to nanofiltration device and reverse osmosis unit, can extend the work-ing life of membrane element in nanofiltration device and reverse osmosis unit simultaneously.Described sterilant can adopt MB881, TH-410 etc., and matched proportion density is 1% ~ 5%.Clean-out system can adopt MC511, MC103 etc., and matched proportion density is 1% ~ 5%.
Described filtering basin comprise nonwoven fabric filtration unit and ultra-filtration equipment.Nonwoven fabric filtration unit is one or more layers nonwoven fabric filtering layer, treatment solution is first by nonwoven fabric filtration unit, solid particulate in treatment solution, suspended substance and organic pollutant etc. are filtered out, aftertreatment fluid filtered by ultra-filtration equipment, microbial cells in supernatant liquor, throw out etc. are separated, and water quality is further enhanced.
Be provided with pump between described equalizing tank and integration apparatus, between described filtering basin and nanofiltration device, be provided with high-pressure pump.Connected by pump and treatment solution is transported to next device, improve the processing efficiency of whole device.
Described device comprises sludge sump, and sludge sump is connected by pipeline with nanofiltration device.The concentrated solution obtained after nanofiltration device process is discharged into sludge sump, is discharged in equalizing tank afterwards recharges process by lift pump.
Compared with prior art, the beneficial effects of the utility model are: (1) causticization pond, aeration tank and the integrated equipment of settling tank, integrate materializing procedure and nitration denitrification process, effectively improve biochemical treatment efficiency; (2) cleaning device in nanofiltration/reverse osmosis unit effectively improves the life cycle of membrane element, also improves effluent quality simultaneously.(3) solid particulate in treatment solution, suspended substance and organic pollutant etc. are filtered out by the nonwoven fabric filtration unit in filtering basin device and ultra-filtration equipment, improve effluent quality, reduce part pollutent to the pollution of membrane element in postorder membrane treatment appts.
Accompanying drawing explanation
Fig. 1 is garbage leachate treatment device.
Embodiment
For content of the present utility model, Characteristic can be further illustrated, hereby exemplify following examples and further describe the utility model.What it should be appreciated by those skilled in the art is; can modify to the details of technical solutions of the utility model and form or replace under the prerequisite not departing from spirit and scope of the present utility model, but these amendments and replacement all fall into protection domain of the present utility model.
As shown in Figure 1, a kind of garbage leachate treatment device, comprise leachate equalization basin, causticization pond, aeration tank, settling tank, filtering basin, nanofiltration device, reverse osmosis unit and outlet sump, each device is connected by pipeline successively, described causticization pond, aeration tank and the integrated equipment of settling tank.Be provided with pump between equalizing tank and integration apparatus, between described filtering basin and nanofiltration device, high-pressure pump is set.The percolate collected enters equalizing tank, balanced water quality and quantity; Percolate enters causticization pond by equalizing tank and carries out anoxic denitrification, acidifying hardly degraded organic substance, improves biodegradability, adds calcium hydroxide and discoloring agent in causticization pond simultaneously, ammonification organonitrogen, raising pH value, removing colloidalmaterial, phosphorus and suspended substance; Directly enter aeration tank after causticization process and carry out nitration reaction, decomposing organic pollutant, the ammonia nitrogen concentration, metal co-precipitation etc. reduced in percolate; Enter settling tank afterwards, be divided into supernatant liquor and mud after precipitation, mud discharging is to sludge sump, and supernatant liquor enters filtering basin; The nonwoven fabric filtration unit of supernatant liquor in filtering basin and ultra-filtration equipment, first the solid particulate in treatment solution, suspended substance and organic pollutant etc. by nonwoven fabric filtration unit, filter out by treatment solution; Aftertreatment fluid filtered by ultra-filtration equipment, the microbial cells in supernatant liquor, throw out etc. are separated, and water quality is further enhanced; By high-pressure pump, treatment solution is sent into nanofiltration device afterwards, treatment solution is filtered by nanofiltration device and reverse osmosis system, except most of ion, SiO in anhydrating
2, organism colloid etc., obtain supernatant liquor and concentrated solution, concentrated solution carries out second-stage treatment back up through the two film of nanofiltration/reverse osmosis, and the concentrated solution after second-stage treatment enters sludge sump, and supernatant liquor enters outlet sump.
Embodiment:
One landfill leachate treatment station, day treatment scale 700m
3/ d, leachate quality is as shown in the table.
| Sequence number | Project | Influent quality |
| 1 | COD cr | 18000mg/L |
| 2 | BOD 5 | 10000mg/L |
| 3 | NH 3-N | 3000mg/L |
| 4 | SS | 2000mg/L |
| 5 | PH | 6～9 |
Garbage leachate treatment device, comprise leachate equalization basin, causticization pond, aeration tank, settling tank, filtering basin, nanofiltration device, reverse osmosis unit and outlet sump, percolate treatment step is as follows:
(1) percolate enters equalizing tank, and after entering the mud mixing sedimentation of equalizing tank with backflow, equalizing tank supernatant liquor enters causticization pond by pump.
(2) supernatant liquor in causticization pond is entered, by volume the ratio of mark 20% starts aeration agitation after adding calcium hydroxide (calcium hydroxide ratio is water and the calcium hydroxide preparation of 10:1), and check pH value in time, make pH value remain between 10.5-11; Causticization pond intakes a half, and by volume mark 6% adds the mixed solution of the polypropylene aminoacyl of ready polymerize aluminum chloride and volume fraction 7%, and continues aeration agitation; Rear continuation aeration is filled 10 minutes in causticization pond, after causticization pond precipitates 4 hours, supernatant liquor is put into aeration tank after causticization completes; After supernatant liquor discharges, mud is put into sludge sump.
Above-mentioned polymerize aluminum chloride passing ratio is water and the polymerize aluminum chloride preparation of 30:1, and polyacrylamide passing ratio is water and the polyacrylamide preparation of 6:1.
(3) supernatant liquor in causticization pond enters aeration tank, aeration 30 minutes, and aeration completed postprecipitation after 4 hours, and settling tank put into by supernatant liquor.Supernatant liquor after precipitation enters filtering basin, and mud discharging is to sludge sump.
(4) the nonwoven fabric filtration unit of supernatant liquor in filtering basin and ultra-filtration equipment, first the solid particulate in treatment solution, suspended substance and organic pollutant etc. by nonwoven fabric filtration unit, filter out by treatment solution; Aftertreatment fluid filtered by ultra-filtration equipment, the microbial cells in supernatant liquor, throw out etc. are separated, and water quality is further enhanced, water quality is improved further, by high-pressure pump, treatment solution is sent into nanofiltration device afterwards;
(5) treatment solution is filtered by nanofiltration device and reverse osmosis system, except most of ion, SiO in anhydrating
2, organism colloid etc., obtain supernatant liquor and concentrated solution, concentrated solution carries out second-stage treatment back up through the two film of nanofiltration/reverse osmosis, and the concentrated solution after second-stage treatment enters sludge sump, and supernatant liquor enters outlet sump.
Following table be the process of percolate treatment station after water quality:
| Sequence number | Project | Effluent quality |
| 1 | COD cr | 50mg/L |
| 2 | BOD 5 | 10mg/L |
| 3 | NH 3-N | 10mg/L |
| 4 | SS | 5mg/L |
| 5 | PH | 6～9 |
Claims (4)
1. a garbage leachate treatment device, comprise leachate equalization basin, causticization pond, aeration tank, settling tank, filtering basin, nanofiltration device, reverse osmosis unit and outlet sump, each device is connected by pipeline successively, it is characterized in that: described causticization pond, aeration tank and the integrated equipment of settling tank, described nanofiltration device and reverse osmosis unit are all provided with cleaning device.
2. a kind of garbage leachate treatment device according to claim 1, is characterized in that: described filtering basin comprise nonwoven fabric filtration unit and ultra-filtration equipment.
3. a kind of garbage leachate treatment device according to claim 1, is characterized in that: be provided with pump between described equalizing tank and integration apparatus, is provided with high-pressure pump between described filtering basin and nanofiltration device.
4. a kind of garbage leachate treatment device according to claim 1, is characterized in that: described device comprises sludge sump, and sludge sump is connected by pipeline with nanofiltration device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520905533.4U CN205152002U (en) | 2015-11-12 | 2015-11-12 | Landfill leachate treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520905533.4U CN205152002U (en) | 2015-11-12 | 2015-11-12 | Landfill leachate treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205152002U true CN205152002U (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520905533.4U Expired - Fee Related CN205152002U (en) | 2015-11-12 | 2015-11-12 | Landfill leachate treatment device |
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| CN (1) | CN205152002U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105347616A (en) * | 2015-11-12 | 2016-02-24 | 天津晟瑞通市政工程有限公司 | Garbage leachate treatment system and process |
-
2015
- 2015-11-12 CN CN201520905533.4U patent/CN205152002U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105347616A (en) * | 2015-11-12 | 2016-02-24 | 天津晟瑞通市政工程有限公司 | Garbage leachate treatment system and process |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190322 Address after: 301617 - 50 m south of Jingwen Road, Houzhai Village, Yangchengzhuang Township, Jinghai District, Tianjin Patentee after: TIANJINSHI XINGRONG FEIZHIZAOBU Co.,Ltd. Address before: 301617 - 50 m south of Jingwen Road, Houzhai Village, Yangchengzhuang Township, Jinghai County, Tianjin Patentee before: TIANJIN SHENGRUITONG MUNICIPAL ENGINEERING Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160413 Termination date: 20211112 |