CN100567185C - Utilize the method for mineralising sludge treatment mature landfill leachate - Google Patents
Utilize the method for mineralising sludge treatment mature landfill leachate Download PDFInfo
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- CN100567185C CN100567185C CNB200710044011XA CN200710044011A CN100567185C CN 100567185 C CN100567185 C CN 100567185C CN B200710044011X A CNB200710044011X A CN B200710044011XA CN 200710044011 A CN200710044011 A CN 200710044011A CN 100567185 C CN100567185 C CN 100567185C
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
Utilize the method for mineralising sludge treatment mature landfill leachate, relate to a kind of recycling of mineralising mud and the treatment process of percolate.Select for use mineralising mud to add flyash, mix as filler by (10: 1)～(10: 3) mass ratio, the percolate of handling through anaerobism, hold concurrently oxygen and aeration directly is sprayed onto the surface of filler, and the result shows, when hydraulic load less than 35.4L percolate/m
3Filler/d, water inlet at interval and psychrometric ratio adopt 3h and 11: 1 respectively; Enter the COD and the NH of the percolate of mineralising sludge organism reactor
3When-N concentration is lower than 2000mg/L and 1600mg/L, goes out water concentration and satisfy the GB16889-1997 secondary discharge standard fully.Technology of the present invention is simple, be easy to make up; Processing cost is low, and maintenance cost is few; Do not need to add chemical agent, non-secondary pollution; No excess sludge produces, and does not need the outer processing costs of supplements.Be the mineralising recycling sludge and be used for " waste recycling " effective way of the processing of mature landfill leachate, for the sustainability landfill of mud landfill reservoir area provides may.
Description
Technical field
The present invention relates to a kind of recycling of mineralising mud and the treatment technology of percolate, be specifically related to a kind of technology of utilizing mineralising sludge treatment mature landfill leachate.Belong to mineralising recycling sludge technical field.
Background technology
At present, the mud that the municipal sewage plant produced mainly carries out treatment and disposal in the mode of landfill.The mud landfill has taken a large amount of soils, becomes the main drawback that the mud landfill is disposed.Tongji University has carried out the years of researches discovery to landfill mud, and the landfill several years mud of (the general 5-8 in south) has reached certain stable degree, apparent similar soil, substantially be destitute of smell, water ratio is lower than 50%, and organic content is lower than 10%, the cation exchange capacity height.Compare with fresh sludge, stabilization mud (mineralising mud) viscosity reduces greatly, and perviousness is significantly improved.Stabilization mud is carried out drip washing with tap water, and COD is less than 100mg/L in the drip washing water outlet, reflects that from the another one side mud has reached a higher stable degree.From stricti jurise is the mud that reaches steady state basically or partly reach steady state, is not the mud of complete inorganicization or mineralising.(organic matter wherein mainly exists with the soil ulmin form the mud of this process certain hour (the general 5-8 of southern area) landfill for we, substantially the mud that reaches stable degree is called " mineralising mud ") the back new packing source utilization of exploitation as a kind of sewage disposal, and it is studied for a long period of time analyze to find: mineralising mud is through behind several years stable, microbe species is abundant, and total amount reaches 10
7, and microorganism wherein passed through a secular natural domestication process, and the degradation capability of pollution substance is improved greatly, especially the bioavailability to hard-degraded substance in the percolate improves greatly.
Percolate, especially the mature landfill leachate biodegradability is relatively poor, and the carbon N/P ratio is seriously lacked of proper care, and belongs to high nitrogen low-carbon type water quality, is difficult to effectively handle with traditional biological process; And physico-chemical process cost height, and produce secondary pollution, be not suitable for the lower countries and regions of economic level.
Summary of the invention
The present invention aims to provide a kind of mineralising recycling sludge and utilizes approach and a kind of cost-effective aged percolate treating process, makes the percolate water outlet satisfy the GB16889-1997 secondary discharge standard.
For achieving the above object, the present invention mainly comprises domestication, the parameters Optimization of design, the mineralising mud of modification, the technical process of mineralising mud, the processing of long-time running.
The present invention solves the technological line that its technical problem adopts:
At first the mineralising sludge quality is characterized and it is carried out modification.Mineralising sludge quality parameter comprises water ratio, organic content, cation exchange capacity, total nitrogen, total phosphorus, pH.For improving its perviousness, can add a certain amount of flyash and form filler, the ratio (mass ratio) of mineralising mud and flyash is when (10: 1)～(10: 3), and the penetrating quality of mineralising mud improves greatly, and to the not obviously influence of percolate treatment effect.With filler pack into the bottom have bed course, top that the reactor of water-distributing device is arranged.Percolate is taken from old port landfill yard, after carrying out anaerobism, double oxygen, aeration processing through anaerobism equalizing tank, oxygen compatibility pool, aeration tank successively, Pollutant levels descend greatly, but COD and ammonia nitrogen concentration still are respectively 1000-2000mg/L and 800-1600mg/L, belong to typical mature landfill leachate.
One, at first to carrying out one month by a definite date routine domestication by mineralising mud with the filler that flyash is formed, adopt the method that improves microbiological treatment organic loading ability in the filler successively that filler is carried out hydraulic load optimization then, optimizing employing was one-period in 7 days, was 17.7L percolate/m by hydraulic load
3Filler/d begins, and improves flooding quantity one by one, until 70.8L percolate/m
3Filler/d, the optimum hydraulic load the when COD of detection percolate and ammonia nitrogen meet the secondary emission request should be less than 35.4L percolate/m
3Filler/d; Begin the preceding parameters Optimization of normal operation (comprising optimum hydraulic load, water inlet interval and psychrometric ratio) afterwards.
Two, then, with different water inlet interval and psychrometric ratio reactor is carried out Parameter Optimization respectively, with water inlet in 0.5～3 hour, 0.5 stopping in～3 hours, water falls to doing to be loop cycle, cooperate water inlet phase percolate and filler to be sprayed at the filling surface of reactor for the uniform speed of ratio of (5: 1)～(11: 1) than (psychrometric ratio) simultaneously, every group of parameter moved 5 days, records its Inlet and outlet water COD, NH
3-N and IC concentration.Water inlet at interval and psychrometric ratio to be respectively 3h and (11: 1) be the optimal operating parameter of treatment effect when reaching the secondary emission request.
Three, according to the processing parameter that comprises hydraulic load, water inlet interval and psychrometric ratio of above-mentioned optimization, carry out long-time running and management, move 5 months, the result shows the COD and the NH of the percolate that enters mineralising sludge organism reactor
3-N concentration maintains 1000-2000mg/L and 800-1600mg/L, and hydraulic load is less than 35.4L percolate/m
3Filler/d, when water inlet interval and psychrometric ratio were respectively 3h and (11: 1), effluent quality satisfied GB16889-1997 country secondary discharge standard (COD＜300mg/L and NH
3-N＜15mg/L).
If stopping up appears in the surface of reactor, suitably the filler of scarifying top layer 10-15cm makes it recover perviousness.The sedimentation to some extent of reactor initial operating stage filling surface can add an amount of new filler.
Advantage of the present invention is:
1, produce with mineralising sludge treatment mature landfill leachate no coupling product, capital cost is few, and maintenance and operational management are convenient, for mineralising mud provides feasibility economically as biologic packing material treating refuse percolate.
2, landfill mud is widely distributed, and quantity is very big, with mineralising sludge treatment percolate, for landfill mud has been opened up a resource utilization approach, for the sustainability landfill of landfill reservoir area provides may.
3, compare with existing aged leachate processing method, the invention solves the problem of aged percolate processing cost height, poor processing effect, found an effective way, meet the environmental protection concept of " waste recycling " fully for the processing of mature landfill leachate.
4, aged percolate ammonia-nitrogen content height, COD/NH
3The ratio of-N maintains between the 1.0-1.5 substantially, and the material that exists more difficulty to be utilized by microorganism.A large amount of microvoid structure of mineralising mud, a large amount of microbial population, and through the taming naturally of 5-8 improves greatly to the degradation capability of pollutent with to the ability of utilizing of hard-degraded substance.When temperature is 0-20 ℃, hydraulic load is 35.4L percolate/m
3Filler/d, water inlet COD, BOD, IC, NH
3-N is respectively 1200mg/L, and 150mg/L during 1100mg/L and 1000mg/L, goes out water concentration and is lower than 250mg/L respectively, 10mg/L, and 60mg/L and 10mg/L have reached the secondary emission request.
5, technology of the present invention simple, be easy to make up; But automatization control, maintenance cost is few; Do not need to add chemical agent, non-secondary pollution; No excess sludge produces, and does not need the outer processing costs of supplements.
Description of drawings
Fig. 1 is a mineralising sludge organism reactor for treatment mature landfill leachate process flow sheet
Fig. 2 is a mineralising sludge organism structure of reactor synoptic diagram
Label declaration in the accompanying drawing is as follows:
The 1-water-distributing device; The 2-filler; The 3-bed course.
Embodiment
See also Fig. 1 and 2.Earlier mature landfill leachate is entered equalizing tank, anaerobic pond, oxygen compatibility pool and aeration tank according to common process and order and carry out pre-treatment, the pretreated mature landfill leachate of process enters in the mineralising sludge organism reactor to be handled, the filler 2 of filling is mixed by (10: 1)～(10: 3) mass ratio by mineralising mud and flyash and forms in the mineralising sludge organism reactor of the present invention, be provided with water-distributing device 1 above the filler 2, the bed course 3 that the thick rubble of 5cm is formed is laid in filler 2 bottoms.Mineralising sludge organism reactor adopts column construction, and diameter is 15cm, and filler 2 effective loading heights are 40cm (as Fig. 2).
Mineralising mud is old port landfill yard mud, through reaching certain stable degree behind the landfill in 5 years.The water ratio of used mineralising mud, organic content, cation exchange capacity, total nitrogen, total phosphorus, pH are respectively 50.3% (water ratio), 9.56% (organic matter), the dried rubbish of 96.7 milligramequivalents/100g (cation exchange capacity), 0.74% (total nitrogen), 0.51% (total phosphorus), 7.38 (pH).
The used percolate of the present invention is directly taken from the Lao Gang aeration tank.The percolate that mineralising sludge organism reactor at first carries out handling through anaerobism, hold concurrently oxygen and aeration in one month by a definite date directly sprays by water-distributing device 13 surfaces to filler 2 at the uniform velocity, by the flow by gravity effect, pollution substance at first is attracted to the surface of mineralising mud, and degrade to it by microbial process dry spell again falling.The present invention is to after carrying out one month by a definite date routine domestication by mineralising mud with filler 2 that flyash is formed, adopt the method that improves microbiological treatment organic loading ability in the filler successively that filler is carried out hydraulic load optimization then, optimizing with 7 days is that one-period improves hydraulic load successively (by 17.7L percolate/m
3Filler/d is to 70.8L percolate/m
3Filler/d), percolate COD clearance drops to 65% by 80%, and ammonia nitrogen removal frank does not have to change substantially.Next, with different water inlet interval and psychrometric ratio reactor is carried out Parameter Optimization respectively.Be (5: 1)～(23: 1) under at 0.5h, 3h, 6h and 12h different water inlet interval and psychrometric ratio every day, reactor operation 5 months, and effluent quality is listed in table 2.
Stopping up appears in the surface as reactor, and suitably the filler of scarifying top layer 10-15cm makes it recover perviousness.The sedimentation to some extent of reactor initial operating stage filling surface can add an amount of new filler.
Show when water inlet is spaced apart 3h, treatment effect was best when psychrometric ratio was 11: 1, COD, NH from table 1 and table 2 result
3-N and IC clearance reach 81.7%, 99.5% and 96% respectively.
Adopt hydraulic load 35.4L percolate/m
3Filler/d, water inlet is spaced apart 3h, psychrometric ratio is that 11: 1 pairs of mineralising sludge organism reactor Inlet and outlet waters carry out secular monitoring.The result shows, when COD＜2000mg/L, effluent quality can satisfy national secondary discharge standard.
Table 1 percolate influent quality index
Water inlet interval that table 2 is different and psychrometric ratio are to the influence of percolate treatment effect
Claims (2)
1, utilizes the method for mineralising sludge treatment mature landfill leachate, earlier mature landfill leachate is entered equalizing tank after anaerobism, double oxygen and aeration pre-treatment, it is characterized in that: enter in the mineralising sludge organism reactor that makes up as follows through pretreated mature landfill leachate and handle, mineralising sludge organism reactor is to be made of the bed course (3) of the filler (2) of inside filling, filler (2) bottom and the water-distributing device (1) at filler (2) top; Filler (2) is mixed by 10: 1～10: 3 mass ratioes by mineralising mud and flyash to be formed, and treatment process carries out as follows:
One, at first the filler (2) in the mineralising sludge organism reactor is carried out one month by a definite date routine domestication, improve microbiological treatment organic loading ability in the filler, adopt the method that improves microbiological treatment organic loading ability in the filler successively that filler (2) is carried out hydraulic load optimization then, optimizing employing was one-period in 7 days, was 17.7L percolate/(m by hydraulic load
3Filler d) beginning improves flooding quantity one by one, until 70.8L percolate/(m
3Filler d), after testing, when hydraulic load less than 35.4L percolate/(m
3Filler d) time, the COD of percolate and ammonia nitrogen meet COD＜300mg/L and NH
3-N＜15mg/L;
Two, then, with different water inlet interval and psychrometric ratio reactor is carried out Parameter Optimization respectively, with water inlet in 0.5～3 hour, 0.5 stopping in～3 hours, water falls to doing to be loop cycle, the psychrometric ratio that cooperates water inlet phase filler and percolate simultaneously is at the uniform velocity to be sprayed at the filling surface of reactor in 1: 5～11: 1, after testing, water inlet at interval and psychrometric ratio be 3h and 11: 1, make treatment effect reach COD＜300mg/L and NH
3-N＜15mg/L;
Three, carry out long-time running and management than parameter at interval and in wet according to hydraulic load, the water inlet of above-mentioned optimization, the result shows the COD and the NH of the percolate that enters mineralising sludge organism reactor
3When-N concentration maintained 1000-2000mg/L and 800-1600mg/L respectively, hydraulic load was less than 35.4L percolate/(m
3Filler d), water inlet at interval and psychrometric ratio be 3h and 11: 1 o'clock, effluent quality satisfies COD＜300mg/L and NH
3-N＜15mg/L.
2, the method for utilizing mineralising sludge treatment mature landfill leachate according to claim 1, it is characterized in that: it is 5-8 that described mineralising mud is selected from the landfill time, organic matter exists with the soil ulmin form, microorganism has wherein passed through a secular natural domestication process, degradation capability to pollution substance strengthens, especially the landfill mud that the bioavailability of hard-degraded substance in the aged percolate is improved a lot being used through exploitation.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB200710044011XA CN100567185C (en) | 2007-07-19 | 2007-07-19 | Utilize the method for mineralising sludge treatment mature landfill leachate |
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| CNB200710044011XA CN100567185C (en) | 2007-07-19 | 2007-07-19 | Utilize the method for mineralising sludge treatment mature landfill leachate |
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| CN101134631A CN101134631A (en) | 2008-03-05 |
| CN100567185C true CN100567185C (en) | 2009-12-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110452846B (en) * | 2019-08-16 | 2022-07-12 | 鹭滨环保科技（上海）股份有限公司 | Paracoccus denitrificans and biological denitrification method by combining paracoccus denitrificans with mineralization bed |
| CN111995178A (en) * | 2020-08-07 | 2020-11-27 | 山东达源环保工程有限公司 | Method for treating aged landfill leachate by using mineralized sludge |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0095049A2 (en) * | 1982-05-25 | 1983-11-30 | Occidental Chemical Corporation | Treatment of obnoxious chemical wastes |
| CN1351969A (en) * | 2000-11-07 | 2002-06-05 | 同济大学 | Purifying treatment method for diffusion water of garbage burying ground |
| CN1789173A (en) * | 2005-12-27 | 2006-06-21 | 同济大学 | Method for treating leachate in domestic refuses landfill site by tower type aged-refuse bioreactor |
| WO2007029042A1 (en) * | 2005-09-10 | 2007-03-15 | Stuart Christian | Method and apparatus for the aerobic treatment of waste |
-
2007
- 2007-07-19 CN CNB200710044011XA patent/CN100567185C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0095049A2 (en) * | 1982-05-25 | 1983-11-30 | Occidental Chemical Corporation | Treatment of obnoxious chemical wastes |
| CN1351969A (en) * | 2000-11-07 | 2002-06-05 | 同济大学 | Purifying treatment method for diffusion water of garbage burying ground |
| WO2007029042A1 (en) * | 2005-09-10 | 2007-03-15 | Stuart Christian | Method and apparatus for the aerobic treatment of waste |
| CN1789173A (en) * | 2005-12-27 | 2006-06-21 | 同济大学 | Method for treating leachate in domestic refuses landfill site by tower type aged-refuse bioreactor |
Non-Patent Citations (3)
| Title |
|---|
| 垃圾填埋"生物反应器"模拟实验研究. 郝霄楠.中国优秀博硕士学位论文全文数据库. 2005 * |
| 垃圾填埋场渗滤液循环处理方法初探. 何连生，赵勇胜，李海杰.勘察科学技术，第2期. 2001 * |
| 添加剂对污泥填埋渗滤液性质影响的研究. 丁立强等.环境卫生工程，第13卷第1期. 2005 * |
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