CN110066085A - Leachate in garbage transfer station recycling treatment reuse method - Google Patents
Leachate in garbage transfer station recycling treatment reuse method Download PDFInfo
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- CN110066085A CN110066085A CN201910190310.7A CN201910190310A CN110066085A CN 110066085 A CN110066085 A CN 110066085A CN 201910190310 A CN201910190310 A CN 201910190310A CN 110066085 A CN110066085 A CN 110066085A
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- transfer station
- leachate
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- recycling treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/06—Contaminated groundwater or leachate
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biological Treatment Of Waste Water (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The present invention relates to a kind of leachate in garbage transfer station recycling treatment reuse methods.It solves the technical problems such as prior art treatment effeciency is low.This leachate in garbage transfer station recycling treatment reuse method includes the following steps: that the percolate that S1, garbage transfer station are generated first passes around grid maker, and grid maker separates the suspended matter in percolate water body, and the percolate after separating suspension then flows into conditioning tank；The waste water that S2, conditioning tank come out enters UASB reactor by elevator pump one；The water outlet of S3, oxygen compatibility pool flow into aerobic unit certainly, while the mixed liquor of aerobic unit is flowed back into oxygen compatibility pool using elevator pump two and carries out denitrification；The water outlet of S4, aerobic unit flow into sedimentation basin by gravity flow；Supernatant in S5, sedimentation basin is discharged after biological activated carbon system depth clean unit.The present invention has the advantages that at low cost.
Description
Technical field
The invention belongs to environmental technology field more particularly to a kind of leachate in garbage transfer station recycling treatment reuse sides
Method.
Background technique
With Chinese Urbanization build propulsion, continuous improvement of people's living standards, the rubbish in China city it is daily
Amount is also continuously increased.A large amount of garbage transfer station also starts construction and uses, and rubbish is during terminal is transported at the same time
Also a large amount of landfill leachate is produced.Landfill leachate complicated component, pollutant concentration is high, and peculiar smell is big, if located not in time
Huge threat can all be caused to the physical and mental health of ecological environment and people by managing.
The processing technique of terminal percolate mainly has biochemical process, physical-chemical process, recharge method at present, and above-mentioned
The synthesis of method.
But percolate is substantially only handled rear discharge up to standard by the method for mainstream at present, leads to the waste of resource.
Summary of the invention
Regarding the issue above, the present invention provides it is a kind of environmental protection and can be in the rubbish that resource further utilizes
Turn station percolate recycling treatment reuse method.
In order to achieve the above objectives, present invention employs following technical proposals:
This leachate in garbage transfer station recycling treatment reuse method includes the following steps:
The percolate that S1, garbage transfer station generate first passes around grid maker, and grid maker separates the suspension in percolate water body
Object, the percolate after separating suspension then flow into conditioning tank；
It is mixed into percolate since terminal rubbish has a little solid refuse in extrusion process, and suspended matter and the dregs of fat
It is more, it is therefore desirable to the suspended matter of solid refuse therein and high concentration to be removed by grid maker, grid maker is general optional common
Transfer shares formula grid and with rotary grid maker, suitable model should be selected according to day output.
Every grid maker treatment effeciency can be improved, at the same time it can also improve treatment effect and quality in design.
The conditioning tank of design can carry out preparatory adjusting to percolate, form uniformly mixing, and the work to catchment
With.
The waste water that S2, conditioning tank come out enters UASB reactor by elevator pump one, and the water outlet of UASB reactor flows into certainly
Collection is discharged in oxygen compatibility pool, the biogas that UASB reactor generates above UASB；
UASB reactor HRT is 2d, and organic loading is 10~15kgCOD/m3d, and temperature is controlled at 30~35 DEG C；
Multiple-microorganism is participated in the conversion process of terminal percolate by hydrolysis and acidification reaction by UASB reactor,
This available resource of biogas is converted by waste water, and purifies terminal percolate further.
The design of elevator pump can form percolate stable supplying, at the same time it can also increase the flowing shape of percolate
At.
The water outlet of S3, oxygen compatibility pool flow into aerobic unit certainly, while the mixed liquor of aerobic unit being flowed back using elevator pump two
Denitrification is carried out to oxygen compatibility pool；
The water outlet of S4, aerobic unit flow into sedimentation basin by gravity flow, using separation by gravity supernatant and precipitating sludge,
Precipitating sludge is partly refluxed to oxygen compatibility pool, and sedimentation basin is discharged in excess sludge；
Supernatant in S5, sedimentation basin is discharged after biological activated carbon system depth clean unit.
Using only materialization+biochemical technology, so that it may which 2 standard of table for reaching consumer waste filling and embedding contamination control standard makes rubbish
The COD of rubbish percolate is down to 100mg/L hereinafter, the power and energy consumption of operation is greatly saved；
It is described in above-mentioned S2 step in above-mentioned leachate in garbage transfer station recycling treatment reuse method
UASB reactor is respectively sludge reaction area, gas-liquid-solid three-phase separator and collection chamber from bottom to up.
In above-mentioned leachate in garbage transfer station recycling treatment reuse method, in above-mentioned S2 step, oxygen compatibility pool
HRT be 1.5d, sludge concentration be 4~6mg/L.
It is described in above-mentioned S3 step in above-mentioned leachate in garbage transfer station recycling treatment reuse method
Aerobic unit includes sequentially connected level-one aerobic tank and second level aerobic tank, and the HRT of level-one aerobic tank and second level aerobic tank is 2d,
Sludge concentration is 4~6mg/L.
In above-mentioned leachate in garbage transfer station recycling treatment reuse method, in the oxygen compatibility pool and aerobic unit
Be separately filled with the composite filling that form is combined by elastic solid filler and ecological matrix, the filling rate of composite filling 60~
Between 80%.
The composite filling that elastic solid filler and ecological matrix are combined form is applied in wastewater treatment, by laboratory
Pilot plant test, find the composite filling turn to stand in processes percolate when, have that biofilm is fast, microbial is abundant, pollution degradation
The advantages that object is high-efficient significantly improves the efficiency of biochemistry pool removal pollutant.
In above-mentioned leachate in garbage transfer station recycling treatment reuse method, in the oxygen compatibility pool and aerobic unit
It is separately installed with microporous aeration device, microporous aeration device is located at the bottom of composite filling.Microporous aeration device setting is being combined
The bottom of filler simultaneously carries out blast aeration, and the bubble that composite filling generates aerator is sheared, and is attached to combination and is filled out
Biomembrane on material is stirred to accelerate the update of biomembrane by ascending air.
In above-mentioned leachate in garbage transfer station recycling treatment reuse method, the second level aerobic tank and oxygen compatibility pool
Between be equipped with nitre liquid return pipe.
In above-mentioned leachate in garbage transfer station recycling treatment reuse method, between the sedimentation basin and oxygen compatibility pool
Equipped with mud return line, reflux ratio is 50%~80%, and excess sludge is made mud cake after filter press is dehydrated and transports.
It is described in above-mentioned S5 step in above-mentioned leachate in garbage transfer station recycling treatment reuse method
The biology that active carbon in biological activated carbon system is combined using cocoanut active charcoal and decoloration microorganism and dephosphorization microbial is living
Property charcoal, 3~5mm of partial size of biological activated carbon, filling rate be 50%~70%, using biological activated carbon can reduce system be discharged
Coloration and total phosphorus content.
Culture microorganism is tamed using sludge seeding method, specific step is as follows for sludge seeding method domestication culture: taking aqueous
Then the dewatered sludge containing aerobic nitrification bacterium of rate 80%~90% is configured to the activity that sludge quality concentration is 3~5g/L
Sludge water will inject the activated sludge water of total volume 40%, by elevator pump by terminal percolate in oxygen compatibility pool and aerobic tank
It squeezes into oxygen compatibility pool and aerobic tank, while starting air blower and aerator is supplied oxygen to oxygen compatibility pool and aerobic tank, control simultaneous
The dissolved oxygen in oxygen pond is 0.5~1mg/L, and the dissolved oxygen of aerobic tank is 3~5mg/L.
Secondly, squeezing within first 10 days the terminal percolate of total volume 5% every 2 days, total volume 5% is squeezed into daily within latter 5 days
Terminal percolate, can gradually increase conditioning tank percolate inflow after each pond full water to improve load, be set until reaching
Inflow is counted, and gradually improves nitrification tank sludge quality concentration to 6~8g/L.
Detailed biochemistry pool sludge acclimatization method is provided, this method can shorten the sludge acclimatization phase, reach system in advance
To steady operational status.
Coloration, COD and the ammonia nitrogen of system water outlet can be further decreased using cocoanut active charcoal.
It is described in above-mentioned S1 step in above-mentioned leachate in garbage transfer station recycling treatment reuse method
Grid maker is transfer shares formula grid maker or rotary grid maker；The conditioning tank is civil engineering conditioning tank or setting fluid reservoir.
Grid maker should be selected according to percolate property and design flow of inlet water.
After grid maker is handled, the suspended matter of greasy dirt and bulky grain in percolate can be removed, and be reduced to rear
The influence of continuous biochemical system treatment effeciency.
Compared with prior art, the present invention has the advantages that
1, a large amount of biogas can also be produced while can be up to standard by landfill leachate treatment.The collecting methane of production is mentioned
It can be used as fuel after pure, to realize the recycling of landfill leachate, system is more energy saving and environmentally friendly, is more in line with current society
The development trend of meeting technology.
2, using materialization+biochemical technology, so that it may which 2 standard of table for reaching consumer waste filling and embedding contamination control standard makes rubbish
The COD of rubbish percolate is down to 100mg/L hereinafter, the power and energy consumption of operation is greatly saved.
3, the composite filling that elastic solid filler and ecological matrix are combined form is applied in wastewater treatment, by experiment
Room pilot plant test, find the composite filling turn to stand in processes percolate when, have that biofilm is fast, microbial is abundant, degradation is dirty
The advantages that object is high-efficient is contaminated, the efficiency of biochemistry pool removal pollutant is significantly improved.
4, detailed biochemistry pool sludge acclimatization method is provided, this method can shorten the sludge acclimatization phase, shift to an earlier date system
Reach steady operational status.
5, at low cost and treatment effect and better quality.
Detailed description of the invention
Fig. 1 is system framework schematic diagram provided by the invention.
In figure, grid maker 1, conditioning tank 2, UASB reactor 3, oxygen compatibility pool 4, aerobic unit 5, level-one aerobic tank 51, second level
Aerobic tank 52, nitre liquid return pipe 53, sedimentation basin 6, biological activated carbon system 7.
Specific embodiment
Below be invention specific embodiment and in conjunction with attached drawing, technical scheme of the present invention will be further described, but
Invention is not limited to these embodiments.
As shown in Figure 1,
This leachate in garbage transfer station recycling treatment reuse method includes the following steps:
The percolate that S1, garbage transfer station generate first passes around grid maker 1, and grid maker separates the suspension in percolate water body
Object, the percolate after separating suspension then flow into conditioning tank 2；
The waste water that S2, conditioning tank come out enters UASB reactor 3 by elevator pump one, and the water outlet of UASB reactor flows into certainly
Collection is discharged in oxygen compatibility pool 4, the biogas that UASB reactor generates above UASB；Collecting methane is in collecting tank 31.
UASB reactor HRT is 2d, and organic loading is 10~15kgCOD/m3d, and temperature is controlled at 30~35 DEG C；
Multiple-microorganism is participated in the conversion process of terminal percolate by hydrolysis and acidification reaction by UASB reactor,
This available resource of biogas is converted by waste water, and purifies terminal percolate further.
The water outlet of S3, oxygen compatibility pool 4 are returned the mixed liquor of aerobic unit from inflow aerobic unit 5, while using elevator pump two
It flows to oxygen compatibility pool and carries out denitrification；
The water outlet of S4, aerobic unit flow into sedimentation basin 6 by gravity flow, dirty using separation by gravity supernatant and precipitating
Mud, precipitating sludge are partly refluxed to oxygen compatibility pool 4, and sedimentation basin 6 is discharged in excess sludge；
Supernatant in S5, sedimentation basin 6 is discharged after 7 deep purifying unit of biological activated carbon system.Biological activated carbon
System 7 includes biological activated carbon pond.
In above-mentioned S2 step, the UASB reactor is respectively sludge reaction area, gas-liquid-solid three-phase from bottom to up
Separator and collection chamber.
In above-mentioned S2 step, the HRT of oxygen compatibility pool is 1.5d, and sludge concentration is 4~6mg/L.
In above-mentioned S3 step, the aerobic unit 5 includes that sequentially connected level-one aerobic tank 51 and second level are aerobic
The HRT of pond 52, level-one aerobic tank and second level aerobic tank is 2d, and sludge concentration is 4~6mg/L.
It is separately filled in the oxygen compatibility pool 4 and aerobic unit 5 and form is combined by elastic solid filler and ecological matrix
Composite filling, the filling rate of composite filling is between 60~80%.
Microporous aeration device is separately installed in the oxygen compatibility pool 4 and aerobic unit 5, microporous aeration device is located at combination
The bottom of filler.
Nitre liquid return pipe 53 is equipped between the second level aerobic tank 52 and oxygen compatibility pool 4.
Mud return line 8 is equipped between the sedimentation basin 6 and oxygen compatibility pool 4, reflux ratio is 50%~80%, excess sludge
Mud cake is made after filter press is dehydrated to transport.
In above-mentioned S5 step, the active carbon in the biological activated carbon system 7 uses cocoanut active charcoal and decoloration
The biological activated carbon that microorganism and dephosphorization microbial combine, 3~5mm of partial size of biological activated carbon, filling rate is 50%~
70%, the coloration and total phosphorus content of system water outlet can be reduced using biological activated carbon.
The bubble that composite filling generates aerator is sheared, and is attached to the biomembrane on composite filling by upper
The agitation of air-flow is risen to accelerate the update of biomembrane.
Culture microorganism is tamed using sludge seeding method, specific step is as follows for sludge seeding method domestication culture: taking aqueous
Then the dewatered sludge containing aerobic nitrification bacterium of rate 80%~90% is configured to the activity that sludge quality concentration is 3~5g/L
Sludge water will inject the activated sludge water of total volume 40%, by elevator pump by terminal percolate in oxygen compatibility pool and aerobic tank
It squeezes into oxygen compatibility pool and aerobic tank, while starting air blower and aerator is supplied oxygen to oxygen compatibility pool and aerobic tank, control simultaneous
The dissolved oxygen in oxygen pond is 0.5~1mg/L, and the dissolved oxygen of aerobic tank is 3~5mg/L.
Filtrate after filter press filters pressing enters in active carbon pond.
Mud discharging after sedimentation basin precipitating is into sludge-tank.
In addition, being respectively equipped with flight, composite filling in oxygen compatibility pool 4, level-one aerobic tank 51 and 52 inner wall of second level aerobic tank
Be suspended on it is flight-shaped at spiral space in.
The following are Anji County Mei Xi town leachate in garbage transfer station using the treatment effect of each unit after the method for the present invention:
It can intuitively find out that the present invention has preferable removal effect to leachate in garbage transfer station from table, it is especially raw
Change unit, has higher removal rate to COD, ammonia nitrogen and total phosphorus, this method is not under conditions of using film device, so that it may will
Leachate in garbage transfer station handles qualified discharge.
Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (9)
1. leachate in garbage transfer station recycling treatment reuse method, which is characterized in that this method includes the following steps:
The percolate that S1, garbage transfer station generate first passes around grid maker (1), and grid maker separates the suspension in percolate water body
Object, the percolate after separating suspension then flow into conditioning tank (2)；
The waste water that S2, conditioning tank come out enters UASB reactor (3) by elevator pump one, and the water outlet of UASB reactor is simultaneous from flowing into
Collection is discharged in oxygen pond (4), the biogas that UASB reactor generates above UASB；
UASB reactor HRT is 2d, and organic loading is 10~15kgCOD/m3d, and temperature is controlled at 30~35 DEG C；
The water outlet of S3, oxygen compatibility pool (4) flow into aerobic unit (5) certainly, while being returned the mixed liquor of aerobic unit using elevator pump two
It flows to oxygen compatibility pool and carries out denitrification；
The water outlet of S4, aerobic unit flow into sedimentation basin (6) by gravity flow, using separation by gravity supernatant and precipitating sludge,
Precipitating sludge is partly refluxed to oxygen compatibility pool (4), and sedimentation basin (6) are discharged in excess sludge；
Supernatant in S5, sedimentation basin (6) is discharged after biological activated carbon system (7) clean unit.
2. leachate in garbage transfer station recycling treatment reuse method according to claim 1, which is characterized in that above-mentioned
S2 step in, the UASB reactor from bottom to up be respectively sludge reaction area, gas-liquid-solid three-phase separator and collection chamber.
3. leachate in garbage transfer station recycling treatment reuse method according to claim 1, which is characterized in that above-mentioned
S2 step in, the HRT of oxygen compatibility pool is 1.5d, and sludge concentration is 4~6mg/L.
4. leachate in garbage transfer station recycling treatment reuse method according to claim 1, which is characterized in that above-mentioned
S3 step in, the aerobic unit (5) includes sequentially connected level-one aerobic tank (51) and second level aerobic tank (52), level-one
The HRT of aerobic tank and second level aerobic tank is 2d, and sludge concentration is 4~6mg/L.
5. leachate in garbage transfer station recycling treatment reuse method according to claim 1, which is characterized in that described
It is separately filled with the composite filling that form is combined by elastic solid filler and ecological matrix in oxygen compatibility pool (4) and aerobic unit (5),
The filling rate of composite filling is between 60~80%.
6. leachate in garbage transfer station recycling treatment reuse method according to claim 5, which is characterized in that described
It is separately installed with microporous aeration device in oxygen compatibility pool (4) and aerobic unit (5), microporous aeration device is located at the bottom of composite filling
Portion.
7. leachate in garbage transfer station recycling treatment reuse method according to claim 5, which is characterized in that described
Nitre liquid return pipe (53) is equipped between second level aerobic tank (52) and oxygen compatibility pool (4).
8. leachate in garbage transfer station recycling treatment reuse method according to claim 1, which is characterized in that described
Mud return line (8) are equipped between sedimentation basin (6) and oxygen compatibility pool (4), reflux ratio is 50%~80%, and excess sludge is through filter press
Mud cake is made after dehydration to transport.
9. leachate in garbage transfer station recycling treatment reuse method according to claim 1, which is characterized in that above-mentioned
S5 step in, active carbon in the biological activated carbon system (7) is using cocoanut active charcoal and decoloration microorganism and dephosphorization
The biological activated carbon that microbial combines, 3~5mm of partial size of biological activated carbon, filling rate is 50%~70%, living using biology
Property charcoal can reduce system water outlet coloration and total phosphorus content.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111153558A (en) * | 2020-01-20 | 2020-05-15 | 上海泓济环保科技股份有限公司 | Garbage transfer station leachate treatment device and treatment method thereof |
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