CN105347616A - Garbage leachate treatment system and process - Google Patents
Garbage leachate treatment system and process Download PDFInfo
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- CN105347616A CN105347616A CN201510769795.7A CN201510769795A CN105347616A CN 105347616 A CN105347616 A CN 105347616A CN 201510769795 A CN201510769795 A CN 201510769795A CN 105347616 A CN105347616 A CN 105347616A
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Abstract
The invention discloses a garbage leachate treatment system and process. The treatment system includes a leachate adjusting pond, a causticizing pond, an aeration pond, a sedimentation pond, a filtration pond, a nanofiltration device, a reverse osmosis device and a water outlet pond, all the devices are connected through pipelines in turn, and the causticizing pond, the aeration pond and the sedimentation pond form an integrated device. The integrated device integrates physical and chemical processes and nitrification and denitrification processes, better maintains a living environment of anaerobic, facultative and aerobic flora, and increases the ability to degrade various organic matters; and at the same time, a membrane separation technique after biochemical treatment greatly improves the quality of the effluent quality, and improves effluent discharge standards.
Description
Technical field
The present invention relates to field of garbage disposal, especially relate to a kind of garbage percolation liquid treating system and technique.
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.
Method for treating garbage percolation liquid mainly contains pre-treatment, biochemical treatment and advanced treatment, and wherein pre-treatment comprises biological process, Physical, chemical method etc., mainly removes ammonia nitrogen and inorganic impurity, or improves the biodegradability of percolate; Biochemical treatment comprises anaerobic process, aerobic method etc., the organic pollutant and ammonia nitrogen etc. of handling object mainly in percolate; Advanced treatment comprises nanofiltration, reverse osmosis, adsorption filtration, Advanced oxidation technologies etc., mainly removes the suspended substance in percolate, difficult raw degradation of organic substances and colloid etc.
In recent years, garbage leachate treatment process mainly adopted biochemical treatment, and its shortcoming is: (1) biochemical treatment processing efficiency is by COD, BOD and NH in percolate
3the impact of-N concentration etc., as:, NH all very high for COD and BOD concentration
3the water from diffusion of the features such as-N concentration is lower, better processes; COD and BOD concentration is all significantly declined, but B/C declines obviously, NH
3-N concentration is compared with the water from diffusion of high, and biodegradability is very poor.(2) partial organic substances is difficult to by biological treatment degraded.Therefore, research and develop a kind of have make percolate reach can the pre-treatment of biochemical condition, biochemical treatment, complete the steps such as the pollutent that biochemical treatment fails to remove percolate treating process urgently to be resolved hurrily.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, the invention provides a kind of garbage percolation liquid treating system and technique, efficiently solving the short slab that percolate process adopts biochemical treatment, guaranteeing that water outlet reaches emission standard.
Technical scheme adopted for achieving the above object is: a kind of garbage percolation liquid treating system, 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, pump is set.By pump, treatment solution is transported to next device, improves the processing efficiency of whole technical process.
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 into equalizing tank afterwards recharges process by lift pump.
A kind of garbage leachate treatment process, comprises pre-treatment, denitrification, nitrated, membrane separation process, comprises step:
(1) percolate collected enters equalizing tank, balanced water quality and quantity;
(2) percolate enters causticization pond by equalizing tank and carries out anoxic denitrification, acidifying hardly degraded organic substance, improve biodegradability, add calcium hydroxide and discoloring agent in causticization pond, ammonification organonitrogen, raising pH value, removing colloidalmaterial, phosphorus and suspended substance simultaneously; 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;
(3) 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;
(4) 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.
In the causticization pond of described step (4), by volume representative fraction is that 10%-20% adds calcium hydroxide, and pH value remains between 9.5-11, adds discoloring agent.
Described discoloring agent to be added water the mixture obtained by the polyacrylamide of volume ratio mark to be the polymerize aluminum chloride of 2%-6% and volume ratio mark be 3%-7%.
Described calcium hydroxide ratio is water between 10:1-30:1 and calcium hydroxide preparation.
Described polymerize aluminum chloride passing ratio is water and the polymerize aluminum chloride preparation of 30:1-50:1, and polyacrylamide passing ratio is water and the polyacrylamide preparation of 6:1-15:1.
Compared with prior art, the invention has the beneficial effects as follows: pre-treatment, biological treatment, membrane separation technique are combined in order to treating refuse percolate by (1), improve treatment system integration degree and can reusing; (2) utilize pre-treatment to regulate and control percolate, make its easy biochemical treatment, and using membrane separation technique as follow-up guarantee technique; (3) compared with single biochemical processing process, improve percolate processing efficiency, reach higher emission request.
Accompanying drawing explanation
Fig. 1 is garbage percolation liquid treating system and process flow sheet.
Embodiment
For content of the present invention, Characteristic can be further illustrated, hereby exemplify following examples and further describe the present invention.It should be appreciated by those skilled in the art, can modify to the details of technical solution of the present invention and form or replace under prerequisite without departing from the spirit and scope of the present invention, but these amendments and replacement all fall into protection scope of the present invention.
Embodiment 1:
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 |
Landfill leachate treatment station, 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 |
Embodiment 2:
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 |
Landfill leachate treatment station, 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) enter the supernatant liquor in causticization pond, by volume the ratio of mark 10% adds calcium hydroxide (calcium hydroxide ratio is the water of 30:1 and calcium hydroxide preparation.) after start aeration agitation, and check pH value in time, make pH value remain between 9.5-10; Causticization pond intakes a half, and by volume mark 2% adds the mixed solution of the polypropylene aminoacyl of ready polymerize aluminum chloride and volume fraction 3%, 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 50:1, and polyacrylamide passing ratio is water and the polyacrylamide preparation of 15:1.
(3) supernatant liquor in causticization pond enters aeration tank, aeration 40 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 | 80mg/L |
| 2 | BOD 5 | 20mg/L |
| 3 | NH 3-N | 15mg/L |
| 4 | SS | 5mg/L |
| 5 | PH | 6～9 |
Embodiment 3:
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 |
Landfill leachate treatment station, comprises causticization pond, aeration tank, settling tank and outlet sump, and percolate treatment step is as follows:
(1) percolate enters in causticization pond, ratio in 10% starts aeration agitation after adding calcium hydroxide (calcium hydroxide ratio is water and the calcium hydroxide preparation of 30:1), and check pH value in time, make pH value remain between 9.5-10; Causticization pond intakes a half, and by volume mark is 2% mixed solution adding the polypropylene aminoacyl of ready polymerize aluminum chloride and volume fraction 3%, 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 50:1, and polyacrylamide passing ratio is water and the polyacrylamide preparation of 15:1.
(2) supernatant liquor in causticization pond enters aeration tank, aeration 40 minutes, and aeration completed postprecipitation after 4 hours, and settling tank put into by supernatant liquor.In sludge reflux aeration tank after precipitation, 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 | 350mg/L |
| 2 | BOD 5 | 180mg/L |
| 3 | NH 3-N | 300mg/L |
| 4 | SS | 850mg/L |
| 5 | PH | 6～9 |
Embodiment 4:
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 |
Landfill leachate treatment station, 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.
Scheme 1 and scheme 2 all adopt said system and the percolate of process flow steps to identical water-quality constituents to process, wherein, in scheme 1, nanofiltration device and reverse osmosis unit are all with automatic cleaning apparatus, in scheme 2, nanofiltration device and reverse osmosis unit are all without automatic cleaning apparatus, monitored by the effluent quality obtained the different treatment time, result is as shown in the table.
Embodiment 5:
Preparation method's step of discoloring agent is as follows:
1, polymeric aluminum chlorides solution preparation: take 100g polymerize aluminum chloride and measure 3000ml water and put into container and mix, then stirs after 24 hours for subsequent use by stirrer;
2, polyacrylamide solution preparation: take 100g polyacrylamide and measure 600ml water and put into container and mix, then stirs after 24 hours for subsequent use by stirrer;
3, discoloring agent preparation: measure 20ml polymeric aluminum chlorides solution, 30ml polyacrylamide solution and 950ml water respectively with graduated cylinder, pours mixed merga pass stirrer in beaker into and stirs after 4 hours for subsequent use.
Embodiment 6:
Preparation method's step of discoloring agent is as follows:
1, polymeric aluminum chlorides solution preparation: take 100g polymerize aluminum chloride and measure 5000ml water and put into container and mix, then stirs after 24 hours for subsequent use by stirrer;
2, polyacrylamide solution preparation: take 100g polyacrylamide and measure 1500ml water and put into container and mix, then stirs after 24 hours for subsequent use by stirrer;
3, discoloring agent preparation: measure 60ml polymeric aluminum chlorides solution, 70ml polyacrylamide solution and 870ml water respectively with graduated cylinder, pours mixed merga pass stirrer in beaker into and stirs after 4 hours for subsequent use.
Embodiment 7:
The preparation method of aqua calcis: take 100g calcium hydroxide and measure 1000ml water, putting into container, be then mixed into white pasty state for subsequent use.
Embodiment 8:
The preparation method of aqua calcis: take 100g calcium hydroxide and measure 3000ml water, putting into container, be then mixed into white pasty state for subsequent use.
Embodiment 9:
Sanitising agent preparation method: measure the MC511 sanitising agent of 50ml and the water of 950ml respectively, mix and stir for subsequent use.
Sterilant preparation method: measure the MB881 sanitising agent of 50ml and the water of 950ml respectively, mix and stir for subsequent use.
Embodiment 10:
Sanitising agent preparation method: measure the MC511 sanitising agent of 10ml and the water of 990ml respectively, mix and stir for subsequent use.
Sterilant preparation method: measure the MB881 sanitising agent of 10ml and the water of 990ml respectively, mix and stir for subsequent use.
Claims (10)
1. a garbage percolation liquid treating system, 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 percolation liquid treating system according to claim 1, is characterized in that: described cleaning device cleans nanofiltration device and reverse osmosis unit with the water containing clean-out system and sterilant.
3. a kind of garbage percolation liquid treating system according to claim 1, is characterized in that: described filtering basin comprise nonwoven fabric filtration unit and ultra-filtration equipment.
4. a kind of garbage percolation liquid treating system according to claim 1, is characterized in that: be provided with pump between described equalizing tank and integration apparatus, arranges pump between described filtering basin and nanofiltration device.
5. a kind of garbage percolation liquid treating system according to claim 1, is characterized in that: described device comprises sludge sump, and sludge sump is connected by pipeline with nanofiltration device.
6. a garbage leachate treatment process, comprises pre-treatment, denitrification, nitrated, membrane separation process, it is characterized in that: comprise step,
1) percolate collected enters equalizing tank;
2) percolate enters causticization pond by equalizing tank, adds calcium hydroxide and discoloring agent in causticization pond simultaneously; Directly enter aeration tank after causticization process and carry out nitration reaction; 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;
3) the nonwoven fabric filtration unit of supernatant liquor in filtering basin and ultra-filtration equipment, treatment solution is first by nonwoven fabric filtration unit, aftertreatment fluid filtered by ultra-filtration equipment, treatment solution is sent into nanofiltration device by high-pressure pump by the treatment solution after filtration;
4) treatment solution is filtered by nanofiltration device and reverse osmosis unit, obtains supernatant liquor and concentrated solution, and 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.
7. a kind of garbage leachate treatment process according to claim 6, is characterized in that: described step 2) causticization pond in by volume representative fraction be that 10%-20% adds calcium hydroxide, pH value remains between 9.5-11, adds discoloring agent.
8. a kind of garbage leachate treatment process according to claim 7, is characterized in that: described discoloring agent to be added water the mixture obtained by the polyacrylamide of volume ratio mark to be the polymerize aluminum chloride of 2%-6% and volume ratio mark be 3%-7%.
9. a kind of garbage leachate treatment process according to claim 7, is characterized in that: described calcium hydroxide ratio is water between 10:1-30:1 and calcium hydroxide preparation.
10. garbage leachate treatment process according to claim 8, it is characterized in that: described polymerize aluminum chloride passing ratio is water and the polymerize aluminum chloride preparation of ratio 30:1-50:1, polyacrylamide passing ratio is water and the polyacrylamide preparation of 6:1-15:1.
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| CN108483799B (en) * | 2018-03-22 | 2021-02-26 | 中山市天乙能源有限公司 | Leachate treatment process for waste incineration power plant |
| CN111732242A (en) * | 2020-08-18 | 2020-10-02 | 湖南鑫恒环境科技有限公司 | Harmless treatment and recycling process for slurry wastewater |
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