CN1765775A - Method for disposing refuse leachate of domestic refuse landfill - Google Patents
Method for disposing refuse leachate of domestic refuse landfill Download PDFInfo
- Publication number
- CN1765775A CN1765775A CNA2005101029455A CN200510102945A CN1765775A CN 1765775 A CN1765775 A CN 1765775A CN A2005101029455 A CNA2005101029455 A CN A2005101029455A CN 200510102945 A CN200510102945 A CN 200510102945A CN 1765775 A CN1765775 A CN 1765775A
- Authority
- CN
- China
- Prior art keywords
- percolate
- reverse osmosis
- preaeration
- hours
- refuse
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The treatment method for garbage percolate in domestic garbage landfill comprises: using pre-aeration for two hours every four hours to decrease liquid conductivity and acid-base buffer degree for nine days, discharging the treated liquid into middle pond; pumping the liquid into disk-pipe reverse osmosis system to intercept most polluted material in liquid and infiltrate water by pressure. This method has long-time stable effect, and the discharges water achieves first discharge limit in national standard.
Description
Technical field
Present method relates to the treatment process of high concentrated organic wastewater, specifically, relates to a kind of method of using the percolate of preaeration and disc tube reverse osmosis (dt-ro) technical finesse household refuse landfill sites.
Background technology
The percolate of household refuse landfill sites is the high concentration organic sewage that rubbish produces in the landfill process, be mainly derived from the interior moisture of precipitation, organic matter degradation and rubbish itself, contain 93 kinds of objectionable impuritiess according to surveying and determination, 22 kinds of emphasis control lists that have been put into China and American National Environmental Protection Administration are wherein arranged, wherein a kind can be directly carcinogenic, 5 kinds can be brought out carcinogenicly, in addition also contain plurality of heavy metal ion, bacterium, virus etc. in the percolate.Calculate with its pollution load, one ton of percolate is equivalent to 100~200 tons of municipal effluents to the contribution of environment.The domestic refuse of adding China is a mixed collection, be subjected to living condition, living habit, the influence in area and season is very big, make its composition very complicated, the water concentration and the water yield change bigger, relevant statistic data shows that the chemical oxygen demand COD of Chinese consumer waste landfill percolate is between 3000-50000mg/L, and ss suspended solid is about 2000mg/L, ammonia nitrogen is between 1000-3000mg/L, the pH value is between 4~9, also has halogenated aryl hydrocarbon in addition, pollution such as heavy metal and virus, as not handled, directly discharging will be to body of groundwater on every side, surface water body, soil and ecotope bring immeasurable pollution and harm, to the peripheral people's healthy generation serious threat.
Leachate quality is subjected to influence of various factors, as: rubbish composition, quantity of precipitation, landfill yard structure, landfill time etc.Different landfill percolates, COD from several thousand to several ten thousand, BOD
5To several thousand, every index such as SS changes also very greatly from hundreds of.Generally speaking, inorganic component content and changes along with the continuity of landfill phase much larger than organic component content in the percolate, organic further degraded, the BOD/COD value reduces gradually, is unsuitable for biological degradation gradually, and also can continue to produce percolate 10~30 years after the landfill yard closing.
The percolate treatment plant that has built at present adopts traditional biochemical processing, and the processing of this technique functions originates from life sewage is extremely incompatible to this toxicity height of percolate, sewage that change of water quality is big.At present domestic more influential several big refuse tips as: the red temple mountain range of Foochow, the refuse tip, Chang'an in Chengdu, the A Suwei of Pekinese, six li village refuse landfills or the like all are the exemplary of biochemical treatment failure, because effluent quality does not reach design requirements, abandoned existing facility at present.The intractability of percolate is very big, and conventional treatment process is difficult to its processing is reached present national specified discharge standard.Even external technology can satisfy the also very few of first grade discharging requirement.The refuse landfill of China's requirement first discharge standard in 2002 is totally 4 according to statistics, and none example is up to standard; The compliance rate of secondary is less than 10% also, even if three grades of emission standards, compliance rate up to standard and basic also has only 59%.
Summary of the invention
The purpose of this invention is to provide that a kind of technology is reliable, the method for treatment effect reliable processing consumer waste landfill percolate steady in a long-term.
The method of the percolate of processing household refuse landfill sites of the present invention, its step comprises:
(1) adopt preaeration to reduce the specific conductivity and the soda acid buffer index of percolate: percolate is concentrated in the aeration tank, stopped 9 days, the 4 hours aerations in every interval 2 hours enter intermediate pool through the percolate after the preaeration processing with pump;
(2) employing disc tube reverse osmosis (dt-ro) system holds back the most pollution substances in the percolate: with pump the percolate after preaeration is handled is imported the disc tube reverse osmosis (dt-ro) system, make the water molecules in the percolate see through reverse osmosis membrane by pressure, all contaminants matter is held back.
The advantage of the method for the percolate of processing household refuse landfill sites of the present invention and positively effect:
1, treatment effect is steady in a long-term reliable, is applicable to the influent quality of household refuse landfill sites different steps and Various Seasonal;
2, effluent quality is good, no bacterium and suspended substance: water outlet can reach the first grade discharging limit value of China's " domestic refuse sanitary filling field pollute control criterion " in (GB16889-1997), wherein suspended substance (SS) can reach miscellaneous domestic water quality standard, its cost performance height.
3, treatment system preaeration of Cai Yonging and disc tube reverse osmosis (dt-ro) (DTRO) system high efficiency are integrated, and floor space is little, and the disposal field floor space only is about 20% of a common biochemical processing process; Its level of automation height, easy to maintenance, easy to operate, and the removable use of equipment so that household refuse landfill sites can also move to other place use after closing, bring more economic benefit.
Embodiment
The method of the percolate of processing household refuse landfill sites of the present invention, its step comprises:
1, adopt preaeration to reduce the specific conductivity and the soda acid buffer index of percolate.Charge into air by the percolate of aerator in the aeration tank, because the air come-up is overflowed partial vulcanization hydrogen, ammonia, mercaptan, voltaile fatty acid volatile organic compoundss such as (as butyric acid, acetate etc.) from percolate, thereby specific conductivity is reduced, be the load of follow-up disc tube reverse osmosis (dt-ro) system reduction; And a large amount of acid volatilizable organic effusions make the pH value rising of percolate, and the HCO that the soda acid buffer index is played an important role
3 -Ion changes CO gradually into
3 2-Precipitate in conjunction with heavy metal ion, caused the reduction of percolate soda acid buffer index.
Intermittent aeration is adopted in preaeration of the present invention, and the hydraulic detention time (from percolate enter aeration tank to the time of discharging) of percolate in the aeration tank is 9 days, and every interval was carried out aeration in 4 hours 2 hours, and specific conductivity can reduce about 30%.Enter intermediate pool through the percolate after the preaeration processing with pump, so that the operation of the continous-stable of disc tube reverse osmosis (dt-ro) system is for further processing with being pumped into disc tube reverse osmosis (dt-ro) (DTRO) system then.
2, employing disc tube reverse osmosis (dt-ro) (DTRO) system (commercially available) can hold back the most pollution substances in the percolate: reverse osmosis is the phenomenon opposite with the naturally osmotic process, promptly under the ambient pressure effect, the process that solvent is separated out by semi-permeable membranes, the DTRO system utilizes the principle of reverse osmosis technology, make the water molecules in the percolate see through reverse osmosis membrane by pressure, most pollution substances are comprised the small molecules solute, hold back greater than molecule and the ion of 1nm as ammonia nitrogen etc., thereby reach the purpose that purifies percolate.Disc tube reverse osmosis (dt-ro) DTRO system is main in this technology to be removed COD, BOD, ammonia nitrogen and adjusts the pH value, the water outlet that guarantees the entire treatment system reaches related standards, the highest can reaching " urban sewage reutilization city miscellaneous water water quality standard " (GB/T 18920-2002).Because DT-RO film group has special hydromeehanics design, make it to be suitable for handling high opacity and the high waste water that contains the sand coefficient, the waste water SDI value that enters the film group can reach 20, also can reach 40 and contain the sand coefficient; The installation, maintenance of DT-RO treatment system is simple, and is easy to operate, the level of automation height; Because the pipeline that the DT-RO system adopts, zero spare part are standardized component mostly, installation, maintenance is more convenient.
After disc tube reverse osmosis (dt-ro) moves for some time, need clean system.Cleaning system comprises volume pump, medicine storing pot etc.Cleaning process has system to clean and two kinds of matting.
System flushing: the flushing of film group must be carried out when each system closing.The auto stop during system fault is also carried out cleaning procedure.The main purpose of flushing is to prevent that the pollutent in the percolate from depositing at membrane surface.Flushing is divided into two kinds, and a kind of is with the percolate flushing, and a kind of is the water purification flushing, and water purification can adopt the clear liquid after the system handles, and the time of two kinds of flushings is generally all at 2~5 minutes.
Matting: for keeping the diaphragm-operated performance, the film group should regularly be carried out matting.Used clean-out system divides acidic cleaner A and alkaline cleaner C (Beijing Tiandiren Environment-Tech Co., Ltd produces and sells), and the timed interval that alkalescence is cleaned is 100~200 hours, and the acid timed interval of cleaning is 200~400 hours.The main effect that alkalescence is cleaned is to remove organic pollution, and acid main effect of cleaning is to remove inorganic pollution.When cleaning, detergent solution is at film group system internal recycle, and to remove the pollution substance that is deposited on the diaphragm, scavenging period was generally 1~2 hour, but can stop at any time.Liquid discharge system after cleaning finishes is to the pre-treatment equalizing tank.Generally clean-out system being diluted to 5~10% backs uses.
Claims (1)
1, handle the method for the percolate of household refuse landfill sites, its step comprises:
(1) adopt preaeration to reduce the specific conductivity and the soda acid buffer index of percolate: percolate is concentrated in the aeration tank, stopped 9 days, the 4 hours aerations in every interval 2 hours enter intermediate pool through the percolate after the preaeration processing with pump;
(2) employing disc tube reverse osmosis (dt-ro) system holds back the most pollution substances in the percolate: with pump the percolate after preaeration is handled is imported the disc tube reverse osmosis (dt-ro) system, make the water molecules in the percolate see through reverse osmosis membrane by pressure, all contaminants matter is held back.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNB2005101029455A CN1329318C (en) | 2005-09-14 | 2005-09-14 | Method for disposing refuse leachate of domestic refuse landfill |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNB2005101029455A CN1329318C (en) | 2005-09-14 | 2005-09-14 | Method for disposing refuse leachate of domestic refuse landfill |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1765775A true CN1765775A (en) | 2006-05-03 |
CN1329318C CN1329318C (en) | 2007-08-01 |
Family
ID=36741929
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB2005101029455A Active CN1329318C (en) | 2005-09-14 | 2005-09-14 | Method for disposing refuse leachate of domestic refuse landfill |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN1329318C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104150579A (en) * | 2014-01-10 | 2014-11-19 | 广东金明环保科技有限公司 | Biological treatment device used on water treatment integrated equipment |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1136156C (en) * | 1999-11-18 | 2004-01-28 | 同济大学 | Process for treating percolate from garbage filling field |
CN1227163C (en) * | 2001-12-03 | 2005-11-16 | 同济大学 | Burying treatment process capable of purifying percolation water and accelarating domestic refuse stabilization |
CN1251971C (en) * | 2002-04-25 | 2006-04-19 | 同济大学 | Treating process of percolated liquid in city refuse landfill |
CN1220637C (en) * | 2002-12-16 | 2005-09-28 | 华中科技大学 | Technology for treating and controlling waterlogging in refuse bury field |
CN1176034C (en) * | 2003-03-28 | 2004-11-17 | 北京市肇麟环境技术开发公司 | Process and apparatus for urban refuse cite penetrating liquid by three stage plus one process |
CN1176028C (en) * | 2003-04-21 | 2004-11-17 | 广西大学 | Method of purifying percolate of buried field for town refuse |
CN1280215C (en) * | 2003-11-27 | 2006-10-18 | 武汉安全环保研究院 | Urban refuse sanitary landfill leachate disposing process |
CN1278962C (en) * | 2004-12-17 | 2006-10-11 | 清华大学 | Resource process for percolation liquid of city life garbage landfill |
-
2005
- 2005-09-14 CN CNB2005101029455A patent/CN1329318C/en active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104150579A (en) * | 2014-01-10 | 2014-11-19 | 广东金明环保科技有限公司 | Biological treatment device used on water treatment integrated equipment |
Also Published As
Publication number | Publication date |
---|---|
CN1329318C (en) | 2007-08-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101811796A (en) | Method for treating leachate | |
CN1209304C (en) | Garbage percolation liquid treatment process | |
CN208532535U (en) | A kind of garbage percolation liquid treating system | |
CN201770580U (en) | System for treating domestic sewage of small town | |
CN201116291Y (en) | Advanced wastewater treatment device | |
CN205575890U (en) | Integrated sewage treatment device | |
CN1789173A (en) | Method for treating leachate in domestic refuses landfill site by tower type aged-refuse bioreactor | |
CN105129982A (en) | Multistage tide flow wetland system for treating organic wastewater difficult to degrade, and method thereof | |
CN202265481U (en) | Sewage treatment integrated device based on hydrolysis-membrane bioreactor (HMBR) | |
CN209778569U (en) | Old garbage landfill leachate treatment system | |
CN101786724A (en) | Technology for processing domestic sewage into normal water | |
CN1329318C (en) | Method for disposing refuse leachate of domestic refuse landfill | |
CN101391833A (en) | Filter tank type membrane bioreactor | |
CN105084660A (en) | Contact oxidation sewage treatment device and treatment method thereof | |
CN1296297C (en) | Deep cleaning treatment process for city effluent | |
CN105384304A (en) | Domestic sewage treatment method by mounting biological stuffing in A/O biochemical system | |
CN2832807Y (en) | Device for treating garbage leachate in domestic garbage burning factory | |
CN202016932U (en) | Biological strengthened amphibious plant filter system capable of treating rural domestic sewage | |
CN1323039C (en) | Apparatus and method for disposing refuse leachate from household refuse burning factory | |
CN202953907U (en) | Landfill leachate treatment device | |
CN1928072A (en) | Microorganism bacterium agent for treating septic tank and city planting ductwork sewage and sludge and production method | |
CN104163542B (en) | Sanitary sewage filtering device | |
CN106517643B (en) | River sewage source treatment method | |
CN204022619U (en) | Sanitary sewage filtering device | |
CN205973975U (en) | Waste incineration power plant leachate's treatment facility |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant |