CN107435365A - The collection method and collection system of refuse landfill high concentration percolate - Google Patents
The collection method and collection system of refuse landfill high concentration percolate Download PDFInfo
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- CN107435365A CN107435365A CN201710762600.5A CN201710762600A CN107435365A CN 107435365 A CN107435365 A CN 107435365A CN 201710762600 A CN201710762600 A CN 201710762600A CN 107435365 A CN107435365 A CN 107435365A
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F1/00—Methods, systems, or installations for draining-off sewage or storm water
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B1/00—Dumping solid waste
- B09B1/006—Shafts or wells in waste dumps
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Abstract
The invention discloses a kind of collection method and collection system of refuse landfill high concentration percolate.Collection method includes for low concentration percolate being delivered to the operation field of refuse landfill, and by stringing and the recycling mode of perforate flood irrigation, collection obtains high concentration percolate.Collection system, which includes collection system, includes recharge system and the high concentration leachate collection pool being connected with recharge system, recharge system includes the branch pipe(tube) that main pipeline and Duo Gen connect with main pipeline, main pipeline is on the job platform of refuse landfill, branch pipe(tube) located at refuse landfill operation it is domatic on, more branch pipe(tube)s are provided at circumferentially spaced along operation is domatic；If dry hole is offered on branch pipe(tube).The collection method and systematic collection to percolate CODcr significantly improve, carbon-nitrogen ratio and biodegradability can meet the stable operation of biochemical system, cost greatly has been saved, carbon source has been avoided using the influence to film process, improves stability and efficiency that percolate is handled.
Description
Technical field
The invention belongs to environmental technology field, and in particular to a kind of collection method of refuse landfill high concentration percolate and
Collection system.
Background technology
China's house refuse concentrates landfill disposal to be developed in the nineties in last century, and major domestic waste is concentrated at landfill
Reason has more than 10 years history, and caused percolate is utilized using ripe biochemical treatment+advanced treatment process during landfill
All kinds of organic pollutions in microbial degradation percolate.In order to ensure Microbial denitrogenation is up to state standards in processing system,
According to Microbial denitrogenation reaction principle, requirement water inlet carbon-nitrogen ratio >=4 are typically designed.And relatively early a collection of concentration landfill domestic at present
Percolate caused by household refuse landfill sites progresses into the aging stage, is mainly shown as raw water CODcr（COD）
It is relatively low, ammonia-nitrogen content is high, biodegradability is poor, carbon-nitrogen ratio ＜ 2, have a strong impact on stable operation and the treatment effect of biochemical system.
In order to solve the problems, such as percolate aging, current each percolate treatment plant mainly takes the mode of additional carbon,
Raw water carbon-nitrogen ratio is improved, carbon source used is mainly glucose and methanol.Long-term use of glucose, to using film depth science and engineering
The percolate factory of skill influences there is also certain, and it is fast to be mainly reflected in flux depression, easily causes stifled film；And methanol is inflammable, has
Poison, danger coefficient is larger, either glucose or methanol, all significantly increases operation cost, the stable fortune to percolate factory
Battalion brings great pressure.
In view of the above circumstances, each landfill yard starts to collect high concentration percolate in garbage loading embeading operation field to improve water inlet
Water quality, due to each landfill yard land-fill method with lead that to ooze system setting different, effectively collect high concentration percolate and still have necessarily
Problem.
The content of the invention
The technical problem to be solved in the present invention is overcome the deficiencies in the prior art, there is provided one kind is easy to operate, cost is cheap,
Stability and high efficiency, be remarkably improved percolate CODcr, carbon-nitrogen ratio and biodegradability refuse landfill high concentration percolate collection
Method and collection system.
In order to solve the above technical problems, the present invention uses following technical scheme：
A kind of collection method of refuse landfill high concentration percolate, comprises the following steps：Low concentration percolate is delivered to rubbish
The operation field of rubbish landfill yard, by stringing and the recycling mode of perforate flood irrigation, collection obtains high concentration percolate, described low dense
CODcr≤4000mg/L, the carbon-nitrogen ratio ＜ 4 of percolate are spent, reacts ratio B/C≤0.2 of biodegradability, the high concentration diafiltration
CODcr >=8000mg/L of liquid, carbon-nitrogen ratio >=4, react ratio B/C >=0.5 of biodegradability.
In the collection method of above-mentioned refuse landfill high concentration percolate, it is preferred that the stringing and perforate flood irrigation
Recycling mode is realized by using a recharge system：The recharge system includes the branch pipe that main pipeline and Duo Gen connect with main pipeline
Road, the main pipeline located at refuse landfill job platform on, the branch pipe(tube) located at refuse landfill operation it is domatic on,
More branch pipe(tube)s are provided at circumferentially spaced along operation is domatic；If offer dry hole on the branch pipe(tube).
In the collection method of above-mentioned refuse landfill high concentration percolate, it is preferred that the branch pipe(tube) is perforate floral tube,
3~5 holes are opened up on every meter long of branch pipe(tube)；The hole shape of the branch pipe(tube) is circular or rectangle.
In the collection method of above-mentioned refuse landfill high concentration percolate, it is preferred that the low concentration percolate comes from
The leachate equalization basin of refuse landfill.
In the collection method of above-mentioned refuse landfill high concentration percolate, it is preferred that described to collect obtained high concentration
Percolate is delivered to the percolation liquid treating system of refuse landfill.
In the collection method of above-mentioned refuse landfill high concentration percolate, it is preferred that the refuse landfill is to have filled out
Bury the time refuse landfill of >=5 years.
The technical concept total as one, the present invention also provide a kind of collection system of refuse landfill high concentration percolate
System, the collection system include recharge system and the high concentration leachate collection pool being connected with recharge system, the recharge system
System includes the branch pipe(tube) that main pipeline and Duo Gen connect with main pipeline, and the main pipeline is located on the job platform of refuse landfill,
The branch pipe(tube) located at refuse landfill operation it is domatic on, more branch pipe(tube)s are provided at circumferentially spaced along operation is domatic；It is described
If dry hole is offered on branch pipe(tube).
In the collection system of above-mentioned refuse landfill high concentration percolate, it is preferred that the branch pipe(tube) is perforate floral tube,
3~5 holes are opened up on every meter long of branch pipe(tube)；The hole shape of the branch pipe(tube) is circular or rectangle.
In the collection system of above-mentioned refuse landfill high concentration percolate, it is preferred that the main pipeline and garbage loading embeading
The leachate equalization basin of field is connected, and the high concentration leachate collection pool is connected with the percolation liquid treating system of refuse landfill.
In the collection system of above-mentioned refuse landfill high concentration percolate, it is preferred that the main pipeline is defeated by first
Pump is sent to be connected with the leachate equalization basin of refuse landfill, or, the main pipeline passes through haulage vehicle and refuse landfill
Leachate equalization basin is connected；The high concentration leachate collection pool passes through the second delivery pump and conveyance conduit and refuse landfill
Percolation liquid treating system is connected, or, the high concentration leachate collection pool passes through haulage vehicle and the diafiltration of refuse landfill
Liquid treating system is connected.
CODcr：COD, indicate the important parameter of water quality organic contamination degree.
Ammonia nitrogen：Refer in water with free ammonia（NH3）And ammonium ion（NH4 +）Nitrogen existing for form.
Carbon-nitrogen ratio：Carbon and the ratio of nitrogen total amount, appropriate carbon-nitrogen ratio, could maintain wastewater biochemical anti-in waste water
The stable operation answered, carbon-nitrogen ratio of the present invention refer in particular to the ratio of CODcr and total nitrogen.
B/C：BOD5With CODcr ratio, reflect the index of wastewater biodegradability.
Perforate floral tube：The tubes/conduits material in hole has been opened, has been mainly used in the discharge or collection of construction building industry reclaimed water, gas, its
Depending on design requirement, the present invention is not strict with to hole shape for hole shape, size, pitch of holes etc..
Present invention mainly solves technical problem it is as follows：
（1）It is more long to solve the landfill time limit（>=5 years, preferable 5~15 years）Household refuse landfill sites caused by fresh leachate
Collection problem.
（2）High concentration percolate is collected, solves the problems, such as domestic landfill leachate treatment system carbon-nitrogen ratio deficiency.
The problem is using the insurmountable main cause of prior art：The garbage loading embeading time is more long, and its heap body is thicker, newly
Fresh percolate is more difficult to enter junk-heap body inner bottom part culvert pipe.Percolate, there occurs anaerobic degradation, causes during seepage flow
Carbon is relatively low when it enters processing system by culvert pipe, ammonia nitrogen is higher, carbon-nitrogen ratio deficiency, it is difficult to directly at progress biochemical system
Reason.
For above technical problem, innovative point of the invention essentially consists in：
（1）High concentration percolate is collected by the method for recharge；
（2）Using the recycling mode in the domatic stringing of rubbish operation, perforate flood irrigation.
Compared with prior art, the advantage of the invention is that：
（1）By using the method for the present invention, the percolate CODcr being collected into is significantly improved, carbon-nitrogen ratio and biodegradability
Meet the stable operation of percolate processing biochemical system, instead of the use of additional carbon completely, greatly saved cost, together
When avoid carbon source and use the influence that is brought to film processing system, improve the stability and efficiency of percolate processing.
（2）Using low concentration percolate simulated rainfall recharge to heap body, without purchasing other auxiliary materials, on the one hand save into
This, has on the other hand handled part percolate using the collection system, reduces percolation liquid treating system pressure.
（3）Present system is arranged on garbage loading embeading scene, and without taking up an area, facility used is water pump and pipeline, and operation is simple
Just, collection efficiency is high, strong applicability, is advantageous to the stable processing of percolate of aged landfill yard.
Brief description of the drawings
Fig. 1 is the process chart of the collection method of refuse landfill high concentration percolate in the embodiment of the present invention 1.
Fig. 2 is recharge system in the collection system of refuse landfill high concentration percolate in Example 1 and Example 2 of the present invention
The structure arrangement schematic diagram of system（Or fundamental diagram）.
Fig. 3 is recharge system in the collection system of refuse landfill high concentration percolate in Example 1 and Example 2 of the present invention
The branch pipe(tube) front view of system.
Fig. 4 is recharge system in the collection system of refuse landfill high concentration percolate in Example 1 and Example 2 of the present invention
The branch pipe(tube) profile of system.
Fig. 5 is collection system and the leachate equalization basin of refuse landfill high concentration percolate in the embodiment of the present invention 2, oozed
The integral layout schematic diagram of filtrate processing system.
Marginal data：
1st, the percolate of recharge；2nd, main pipeline；3rd, branch pipe(tube)；4th, the percolate oozed out；5th, perforate；6th, leachate equalization basin；7、
First delivery pump；8th, high concentration leachate collection pool；9th, conveyance conduit；10th, percolation liquid treating system；11st, garbage loading embeading area；
12nd, percolate treatment region；13rd, the second delivery pump.
Embodiment
Below in conjunction with Figure of description and specific preferred embodiment, the invention will be further described, but not therefore and
Limit the scope of the invention.
Material and instrument employed in following examples are commercially available.
Embodiment 1：
A kind of collection method of refuse landfill high concentration percolate of the invention, comprises the following steps：By low concentration percolate
The operation field of refuse landfill is delivered to, by stringing and the recycling mode of perforate flood irrigation, collection obtains high concentration percolate.
As shown in figure 1, the specific collection process of the present embodiment is：Low concentration percolate in leachate equalization basin 6 passes through pipeline
To the recharge scene of refuse landfill, rubbish surface is uniformly spread across by surface flood irrigation, penetrated into heap body, in squeezing for heap body
Pressure effect under, high concentration percolate can be directly entered in collecting pit, the high concentration percolate in collecting pit by pipeline extremely
Percolation liquid treating system 10, so as to complete the collection of high concentration percolate.
In the present embodiment, the recycling mode of stringing and perforate flood irrigation is realized by using a recharge system, the recharge system
Structural representation it is as shown in Figure 2：Recharge system includes the branch pipe(tube) 3 that a main pipeline 2 and Duo Gen connect with main pipeline 2, main
Pipeline 2 located at refuse landfill job platform on, each branch pipe(tube) 3 located at refuse landfill operation it is domatic on, more branch pipes
Road 3 is provided at circumferentially spaced along operation is domatic, can be used every 20 meters and be set a branch pipe to be connected to main pipeline 2.Opened on branch pipe(tube) 3
If provided with dry hole（Dotted line illustrates open-celled structure in figure）.The percolate 1 of recharge（That is low concentration percolate）Pass through main pipeline 2 and branch
After pipeline 3, the percolate 4 that is oozed out.
In the present embodiment, as shown in Figure 3 and Figure 4, branch pipe(tube) 3 is perforate floral tube, and usual every meter of long pipeline opens 3~5 holes,
The perforate 5 of branch pipe(tube) 3 is shaped as circle, can also using rectangle opening.
In the present embodiment, leachate equalization basin 6 of the low concentration percolate from refuse landfill.
In the present embodiment, the high concentration percolate for collecting to obtain is delivered to the percolation liquid treating system 10 of refuse landfill.
In the present embodiment, refuse landfill is fills the refuse landfill of the time limit >=5 year, using this area routine allusion quotation
The refuse landfill of type.
In the present embodiment, the CODcr of low concentration percolate is 3000mg/L, ammonia nitrogen 2500mg/L, carbon-nitrogen ratio close to 1,
B/C is about 0.2；After collection, the CODcr of high concentration percolate is 28000mg/L, ammonia nitrogen 2200mg/L, carbon-nitrogen ratio is 8~
12, B/C be 0.6~0.8.Found by repeatedly collecting experiment, collection method of the invention is widely used in various types of rubbish
Rubbish landfill yard, CODcr, carbon-nitrogen ratio and the B/C of the high concentration percolate for collecting to obtain can stablize in above-mentioned high concentration percolate
Effect, it might even be possible to realize more preferable effect.
Embodiment 2：
A kind of collection system of refuse landfill high concentration percolate of the invention, the collection method of above-described embodiment 1 can adopt
Implemented with the collection system, but be not limited to this system.The collection system of the present embodiment includes recharge system and with returning
The connected high concentration leachate collection pool 8 of fill system.As shown in Fig. 2 recharge system includes a main pipeline 2 and Duo Gen and supervisor
The branch pipe(tube) 3 that road 2 connects, main pipeline 2 is on the job platform of refuse landfill, and each branch pipe(tube) 3 is located at refuse landfill
On operation is domatic, more branch pipe(tube)s 3 are provided at circumferentially spaced along operation is domatic, using a piece branch of every 20 meters settings in the present embodiment
Pipeline 3；If offer dry hole on branch pipe(tube) 3（Dotted line illustrates open-celled structure in figure）.The percolate 1 of recharge（I.e. low concentration is percolated
Liquid）After main pipeline 2 and branch pipe(tube) 3, the percolate 4 that is oozed out.
In the present embodiment, as shown in Figure 3 and Figure 4, branch pipe(tube) 3 is perforate floral tube, and 3 can be opened up on every meter long of branch pipe(tube) 3
~5 holes, the perforate 5 of branch pipe(tube) 3 is round hole, can also using rectangle opening.
Integral layout schematic diagram residing for the collection system of the present embodiment is as shown in figure 5, leachate equalization basin 6（Also it is to ooze
Filtrate treatment plant regulating reservoir）, collection system, percolation liquid treating system 10 be sequentially connected, wherein collection system is located at garbage loading embeading
Area 11, leachate equalization basin 6 and percolation liquid treating system 10 are located at percolate treatment region 12.Leachate equalization basin 6 is with collecting system
Main pipeline 2 in system passes through the first delivery pump 7（Or haulage vehicle）It is connected, the first delivery pump 7 is placed in leachate equalization basin 6
In.Main pipeline 2 connects with more branch pipe(tube)s 3, and branch pipe(tube) 3 is connected with high concentration leachate collection pool 8.High concentration leachate collection
Pond 8 passes through the second delivery pump 13 and conveyance conduit 9 and percolation liquid treating system 10（Also it is percolate treatment plant liquid pool）It is connected,
Second delivery pump 13 is placed in percolation liquid treating system 10.High concentration leachate collection pool 8 can also be by haulage vehicle with oozing
Filtrate processing system 10 is connected.
In the present embodiment, the percolate in leachate equalization basin 6 is low concentration percolate.
The operation principle of the collection system of the present embodiment is as follows：
Main pipeline 2 in collection system is oozed the low concentration in leachate equalization basin 6 by the first delivery pump 7 or haulage vehicle
Filtrate is delivered to landfill operation scene, and main pipeline 2 is positioned partially or entirely on landfill operation platform, along the domatic circumference of operation every
One segment distance arranges a branch pipe(tube) 3 from operation is domatic to toe direction, and each branch pipe(tube) 3 connects with main pipeline 2, branch pipe(tube) 3
For perforate floral tube, percolate is uniformly spread across rubbish surface by the perforate on branch pipe(tube) 3, penetrates into heap body.Junk-heap body
After recharge, water holding saturation degree increase, microbial fermentation effect is accelerated, and accelerates the generation of percolate and oozes out, high concentration
Leachate collection pool 8 is arranged at the domatic toe of recharge operation, and under the squeezing action of heap body, high concentration percolate can directly enter
Enter in collecting pit, pump drainage water pump is set in pond（Second delivery pump 13）, connect collection conduit（Conveyance conduit 9）, it is fed directly to
Percolation liquid treating system 10, or high concentration percolate in pond is delivered to by percolation liquid treating system 10 by haulage vehicle, from
And complete the collection of high concentration percolate.
Measure of merit：
Carried out using the collection method of above-described embodiment 1 and the collection system of embodiment 2 in Changsha sanitary land fill
High concentration leachate collection, low concentration percolate in regulating reservoir is extracted using immersible pump, its CODcr is 3000mg/L, and ammonia nitrogen is
2500mg/L, carbon-nitrogen ratio close to 1, B/C be about 0.2.Uniformly it is spread across by the recycling mode of side slope flood irrigation on junk-heap body, simultaneously
Take collecting pit in rubbish toe to be collected.Start to store high concentration percolate after recharge 1 day, in collecting pit, its CODcr is
15000mg/L, during continuing recharge, CODcr reaches as high as 40000mg/L, and 12 times are improved compared to percolate in regulating reservoir
It is more.When repeatedly implementing recharge operation, the CODcr of the high concentration percolate of collection can reach 28000mg/L mostly, and ammonia nitrogen value is
2200mg/L, remain stable；The high concentration percolate carbon-nitrogen ratio that recharge is collected is more up to more than 10.The high concentration percolate is direct
Percolation liquid treating system 10 is drawn into, influent quality requirement is fully achieved, its biochemical system is can ensure that without additional carbon
Stable operation.
The above described is only a preferred embodiment of the present invention, any formal limitation not is made to the present invention.Though
So the present invention is disclosed as above with preferred embodiment, but is not limited to the present invention.It is any to be familiar with those skilled in the art
Member, in the case where not departing from the Spirit Essence of the present invention and technical scheme, all using in the methods and techniques of the disclosure above
Appearance makes many possible changes and modifications to technical solution of the present invention, or is revised as the equivalent embodiment of equivalent variations.Therefore,
Every content without departing from technical solution of the present invention, the technical spirit according to the present invention is to made for any of the above embodiments any simple
Modification, equivalent substitution, equivalence changes and modification, still fall within technical solution of the present invention protection in the range of.
Claims (10)
1. a kind of collection method of refuse landfill high concentration percolate, it is characterised in that comprise the following steps：Low concentration is oozed
Filtrate is delivered to the operation field of refuse landfill, and by stringing and the recycling mode of perforate flood irrigation, collection obtains high concentration and oozed
Filtrate, CODcr≤4000mg/L of the low concentration percolate, carbon-nitrogen ratio ＜ 4, ratio B/C≤0.2 of biodegradability is reacted,
CODcr >=8000mg/L of the high concentration percolate, carbon-nitrogen ratio >=4, react ratio B/C >=0.5 of biodegradability.
2. the collection method of refuse landfill high concentration percolate according to claim 1, it is characterised in that the stringing
Realized with the recycling mode of perforate flood irrigation by using a recharge system：The recharge system includes main pipeline and Duo Gen and supervisor
The branch pipe(tube) of road connection, for the main pipeline on the job platform of refuse landfill, the branch pipe(tube) is located at refuse landfill
Operation it is domatic on, more branch pipe(tube)s are provided at circumferentially spaced along operation is domatic；If offer dry hole on the branch pipe(tube).
3. the collection method of refuse landfill high concentration percolate according to claim 2, it is characterised in that the branch pipe
Road is perforate floral tube, and 3~5 holes are opened up on every meter long of branch pipe(tube)；The hole shape of the branch pipe(tube) is circular or rectangle.
4. according to the collection method of refuse landfill high concentration percolate according to any one of claims 1 to 3, its feature exists
In the leachate equalization basin of the low concentration percolate from refuse landfill.
5. according to the collection method of refuse landfill high concentration percolate according to any one of claims 1 to 3, its feature exists
In the percolation liquid treating system collected obtained high concentration percolate and be delivered to refuse landfill.
6. according to the collection method of refuse landfill high concentration percolate according to any one of claims 1 to 3, its feature exists
In the refuse landfill is to have filled the refuse landfill of time >=5 year.
7. a kind of collection system of refuse landfill high concentration percolate, it is characterised in that the collection system includes recharge system
System and the high concentration leachate collection pool being connected with recharge system（8）, the recharge system includes main pipeline（2）With more with
Main pipeline（2）The branch pipe(tube) of connection（3）, the main pipeline（2）On the job platform of refuse landfill, the branch pipe(tube)
（3）Located at the operation of refuse landfill it is domatic on, more branch pipe(tube)s（3）It is provided at circumferentially spaced along operation is domatic；The branch pipe
Road（3）If dry hole is offered on.
8. the collection system of refuse landfill high concentration percolate according to claim 7, it is characterised in that the branch pipe
Road（3）For perforate floral tube, every meter long of branch pipe(tube)（3）On open up 3~5 holes；The branch pipe(tube)（3）Hole shape for circle
Or rectangle.
9. the collection system of the refuse landfill high concentration percolate according to claim 7 or 8, it is characterised in that described
Main pipeline（2）With the leachate equalization basin of refuse landfill（6）It is connected, the high concentration leachate collection pool（8）Filled out with rubbish
Bury the percolation liquid treating system of field（10）It is connected.
10. the collection system of refuse landfill high concentration percolate according to claim 9, it is characterised in that the master
Pipeline（2）Pass through the first delivery pump（7）With the leachate equalization basin of refuse landfill（6）It is connected, or, the main pipeline passes through
Haulage vehicle and the leachate equalization basin of refuse landfill（6）It is connected；The high concentration leachate collection pool（8）It is defeated by second
Send pump（13）And conveyance conduit（9）With the percolation liquid treating system of refuse landfill（10）It is connected, or, the high concentration diafiltration
Liquid collecting pit passes through haulage vehicle and the percolation liquid treating system of refuse landfill（10）It is connected.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110066022A (en) * | 2019-05-06 | 2019-07-30 | 广州环投环境服务有限公司 | A kind of landfill percolate recirculation process |
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| CN103466888A (en) * | 2013-09-13 | 2013-12-25 | 广西大学 | Device for physico-chemical-biochemical combined treatment of old-aged landfill leachate |
| CN104341078A (en) * | 2013-08-09 | 2015-02-11 | 蒋寿悟 | Treatment method for leachate in garbage landfill |
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| JPH11216441A (en) * | 1998-02-02 | 1999-08-10 | Hosuparu Kk | Waste disposal method |
| FR2856319A1 (en) * | 2003-06-19 | 2004-12-24 | Grangeon Et Fils | Plant for biotreatment and storage of diverse solid wastes, has multifunctional drainage-, biogas removal- and leachate injection pipe network |
| CN101015832A (en) * | 2007-03-05 | 2007-08-15 | 清华大学 | Denitrification facultative type domestic refuse bioreactor landfill and leachate recirculation process |
| CN104341078A (en) * | 2013-08-09 | 2015-02-11 | 蒋寿悟 | Treatment method for leachate in garbage landfill |
| CN103466888A (en) * | 2013-09-13 | 2013-12-25 | 广西大学 | Device for physico-chemical-biochemical combined treatment of old-aged landfill leachate |
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| CN110066022A (en) * | 2019-05-06 | 2019-07-30 | 广州环投环境服务有限公司 | A kind of landfill percolate recirculation process |
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