CN100402448C - Paper-making effluent purifying treatment process - Google Patents
Paper-making effluent purifying treatment process Download PDFInfo
- Publication number
- CN100402448C CN100402448C CNB2006100692370A CN200610069237A CN100402448C CN 100402448 C CN100402448 C CN 100402448C CN B2006100692370 A CNB2006100692370 A CN B2006100692370A CN 200610069237 A CN200610069237 A CN 200610069237A CN 100402448 C CN100402448 C CN 100402448C
- Authority
- CN
- China
- Prior art keywords
- treatment
- anaerobic
- paper
- water
- cod
- 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.)
- Expired - Fee Related
Links
Images
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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
-
- 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
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention is paper-making effluent purifying treatment process including hydrolyzing acidification, anaerobic biological treatment, anoxia treatment, aerobic biological treatment and aerobic biofilter treatment mainly. The present invention has low treating cost, low power consumption, capacity of generating energy source with produced methane, high treating efficiency, high COD and SS eliminating rate, and other advantages.
Description
Technical field
The invention belongs to the purifying treatment method of paper-making effluent, relate to environmental engineering, water pollution control and water-saving technology field.
Background technology
The main methods of paper waste comprises: physico-chemical process, chemical method, biochemical process.
(1) physico-chemical process mainly utilizes the physical properties such as the methods such as grid, precipitation of waste water, perhaps utilize methods such as the physico-chemical property of waste water such as coagulating sedimentation, this method has the good treatment effect for suspended substance and part colloidalmaterial, for dissolved organic matter, materialization is difficult to remove, but can utilize pre-treatment or the biochemical aftertreatment of physico-chemical process as paper-making pulping waste water.
(2) chemical method mainly utilizes the organism in the oxidation-reduction quality oxidizing water of electrochemistry or chemical agent, and chemical Treatment is effective, and speed is fast, but too high for the residual black liquor working cost of high density, is difficult in the reality be suitable for.
(3) biochemical process mainly utilizes the microbiological deterioration pollutants in waste water, with its nutrition and energy as microorganism, makes microbial growth, and waste water is purified.More suitable in the reality, traditional biochemical technology is divided into anaerobic and aerobic two big classes.Summarize the mechanism of action, be exactly oxydasis decomposing organic matter, thereby waste water is purified by microorganisms.In aerobic wastewater biological system constituted, microorganism existed with active sludge and biomembranous form and works.It is mixed in together that active sludge is exactly microorganisms such as bacterium, protozoon and suspended matter, colloidalmaterial, the cotton-shaped particle with very strong adsorptive power of formation.In fact microbial film is exactly attached to the active sludge that is film like on the filler.Active sludge has very strong adsorptive power, and the ability of very strong decomposition, oxidation of organic compounds and good settling property are arranged, and is easy to separate with processed water behind decomposing organic matter, finally reaches the purpose of purifying liquid waste.Biochemical process is main means of handling sanitary sewage and trade effluent.
Principal pollutant are larger molecular organicses that Mierocrystalline cellulose, hemicellulose, lignin, pentosan etc. are difficult to degrade in the paper waste, and biodegradability is poor, adopts the aerobe treatment technology separately, does not often reach satisfied effect.
Summary of the invention
Technical problem to be solved by this invention provides a kind of improved biochemical process, and adopting " acidifying-anaerobic-anoxic-aerobic-advanced treatment " is that main technology is carried out purifying treatment to paper-making effluent, and waste water is qualified discharge and reuse after purifying.
The purifying treatment method of paper-making effluent of the present invention is characterized in that passing through successively following steps:
(1) Wastewater Pretreatment: remove mechanical impurity, suspended substance, reclaim fiber fines, regulate water quality PH=6～9, COD＜3000mg/l;
(2) acidification hydrolization: waste water carries out acidification hydrolization at hydrolysis acidification pool to be handled, and control hydrolysis PH is slightly acidic, hydraulic detention time 6～10 hours, and temperature is 25～30 ℃, the water outlet of hydrolysis acidification pool enters intermediate pool, regulates intermediate pool PH=6.5～7.5;
(3) anaerobic biological treatment: the waste water of acidified hydrolysis enters anaerobic reactor, and the anaerobic reactor volumetric loading is 3.0-5.0kgCOD/ (m
3.d), adopt the normal temperature anaerobic digestion, total residence time is 24-30h, and average sludge concentration (MLVSS) is 30-40g/L;
(4) anaerobic treatment: the waste water through anaerobic biological treatment is handled through anoxic pond, and aeration flexible pipe is equipped with in the anoxic pond bottom, and the suspension type 3-D filler is equipped with in the centre, the dissolved oxygen content≤0.7mg/l in the water outlet;
(5) aerobe is handled: the sewage through anaerobic treatment enters oxidation ditch system, and its sludge loading is 0.1kgBOD/ (kgMLSS.d), and hydraulic detention time is 26-32h, and average sludge concentration (MLSS) is 2700-3500mg/L, and dissolved oxygen is 0-2.5mg/l;
(6) advanced treatment: the sewage of handling through aerobe enters BAF through post precipitation, and the sponge plastics filler is adopted in the filter tank, and through the water COD≤100mg/l of advanced treatment, SS≤70mg/l reaches reuse or qualified discharge standard.
The present invention below is described in more detail:
(1) Wastewater Pretreatment process: the pulping and paper-making composite waste (being mainly middle-stage wastewater) from the workshop is at first removed the bulk mechanical impurity through grid, again through tiltedly entering air-floating apparatus behind net receipts slurries (aperture of net is 90 orders) the recovery fiber fines, handle through flocculation agent, remove small suspended substance, enter the adjusting settling tank, with balanced water quality and quantity, stable to water quality particularly, (intake pH value generally in the 6-9 scope by water yield adjusting water inlet pH value and COD peak value, COD＜3000mg/l) influence reaches and remove suspended substance as much as possible in pre-treatment, reduce the biochemical treatment load, save working cost.It is that 10% polymerize aluminum chloride or mass concentration are 0.1% polyacrylamide that flocculation agent adopts mass concentration, adds dose according to the air inlet Quality Control system of swimming.
(2) waste water acidification hydrolization process: the paper waste after pre-treatment and adjusting carries out acidification hydrolization at hydrolysis acidification pool to be handled, and hydraulic detention time is 6-10 hour, and temperature is 25-30 ℃, water collecting basin in the middle of the water outlet in acidification hydrolization pond enters.Utilize the PH Controlling System, the PH of the water outlet of control hydrolysis acidification pool in the middle water collecting basin.Hydrolysis-acidification bacteria is stronger to the adaptive faculty of pH value, can carry out smoothly in PH is the scope of 3.5-10, and the present invention adopts in the pH value in the weak acid acid range.By online PH instrument, in middle water collecting basin, carry out adding of soda acid according to the needs of subsequent technique and the background pH value of water inlet, soda acid adds pump and is controlled by PLC.After regulating pH value, middle water collecting basin waste water enters HAR reactor (anaerobic reactor) by sump pump from the bottom, carries out anaerobically fermenting and handles.Acid or alkali that PH regulates usefulness can adopt hydrochloric acid or sodium hydroxide, lime carbonate etc.
(3) anaerobic waste water biological treatment process: the composite waste after the acidified hydrolysis enters in the HAR reactor, relies on the effect of anaerobion to make majority of organic pollutants be degraded to CH
4And CO
2Deng, thereby water quality is purified.The anaerobic reactor volumetric loading is 3.0-5.0kgCOD/ (m3.d), total residence time is 24-30h, average sludge concentration (MLVSS in the whole reactor, mixed solution volatile suspended matter concentration) be 30-40gVSS/L (volatile suspended matter of g/L), the control pH value is between 6.5-7.5, and biogas output can reach 22600.-22680m3/d.HAR establishes on top triphase separator (known equipment), and waste water, biogas and mud rising flow to triphase separator and finish the solid, liquid, gas separation, and biogas is sent; Mud is back to bottom mud bed, and the water outlet after the processing enters anoxic pond.
Before aerobic treatment, carry out anaerobism earlier and strengthen pre-treatment, the main purpose of anaerobic treatment is exactly to realize the conversion of refractory organic by hydrolysis and non-hydrolytic action, the organic molecule of complex structure difficult for biological degradation is converted into can be at a slow speed or the organism of fast degraded biologically, thereby obviously improve the biological treatment property and the decolorizing effect of sewage, this also is that anaerobic hydrolysis (acidifying) can improve one of essential reason of sewage biological treatment property.
(4) anoxic pond (being known equipment) is the pretreatment stage of aerobic treatment, aeration flexible pipe (the DN65 that bottom the pond, is equipped with, stomatal frequency is 1500/meter), regulate dissolved oxygen (DO) content of anaerobic pond water outlet, prevent that it from producing toxic action to aerobic microbiological in the follow-up aerobic treatment system, influences the normal operation of system.Suspension type combination 3-D filler (ZV-150-80 is housed in the middle of anoxic pond, be that hydroformylation polyvinyl tow+plastics compressing tablet assembles, compressing tablet diameter 80mm, compressing tablet spacing 150mm), by partly degrade difficult degradation and have the pollutent of inhibition of the microbiological deterioration of adhering on the filler, sewage in the flow process, can form some microbial films between fiber yarn between filler, sewage reaches the degraded of pollutent in contact process mobile with it.By optionally degrade part difficult degradation and have the pollutent of inhibition of artificial regulatory,,, carry out aerobe and thoroughly handle to remove this part organism by adsorption filtration.
(5) waste water aerobic biological treatment process: the sewage from anoxic pond enters oxidation ditch system, operational conditions is sludge loading 0.1kgBOD/ (kgMLSS.d) can degrade 0.1 kilogram the BOD of active sludge of per kilogram (every day), hydraulic detention time is 26-32h, average sludge concentration (MLSS) is 2700-3500mg/L, and dissolved oxygen (DO) is 0-2.5mg/l.Surface aeration machine is housed in oxidation ditch, system is under the effect of high-concentration activated sludge, carry out BOD and remove, the NH3-N nitrification and denitrification is by the multi-stage anaerobic that designs in the ditch biochemical action with the aerobic zone generation, reinforcement is to the removal of the nitrated and nitrate of NH3-N, make pollutent obtain purifying more completely, water outlet enters settling tank and carries out solid-liquid separation, and its return sludge ratio is 70-100%, mud is back to the backflow pumping plant, carries out reuse or thickening.
(6) waste water advanced treating processes: utilize the water outlet after BAF (BAF) the advanced treatment aerobic treatment.Filter tank employing porous plastic filler (specification 10mm * 10mm) as microorganism carrier.Its action principle is, under the situation of bottom aeration, friction constantly after the plastic filler fluidisation is brought in constant renewal in filling surface ground microorganism, and the aging microorganism that comes off is with the water device for transferring that recoils, and filling surface can keep higher biological activity for a long time.COD of sewage in the high-efficiency aerobic bio-reactor after advanced treatment (chemical oxygen demand (COD))≤100mg/l, SS (suspended substance) 70mg/l fully can reuse or qualified discharge.
COD≤the 5000mg/l of the paper-making effluent that the present invention was suitable for, SS≤2000mg/l, NH
3-N≤100mg/l, pH value are 6-9.
Advantage of the present invention:
Adopting " acidifying-anaerobic-anoxic-aerobic-advanced treatment " is that main technology is handled paper-making effluent, produce following effect: (1) working cost is low: COD more than 80% (chemical oxygen demand (COD)) and BOD (biochemical oxygen demand (BOD)) just can remove in anaerobic system, energy requirement reduces greatly, can also generate energy, that can utilize that anaerobic process produce contains 50-70% methane (CH
4) biogas, because of containing higher calorific value, can be as the energy that needs usefulness in the follow-up aerobic processes.(2) total system running condition is stable, the processing efficiency height, and COD≤100mg/l, SS≤70mg/l can satisfy the pollutent index that reduces water outlet fully, reaches the purpose of the recycling of waste water.(3) investment is low: HAR reactor volume load is significantly higher than aerobic reactor in the anaerobic process, therefore, handle the organic waste water of the identical water yield and water quality, the required volumetric ratio of HAR reactor adopts aerobic reactor much smaller merely, thereby can save floor space, reduce initial cost.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Embodiment
Below in conjunction with description of drawings the present invention.
The pulping and paper-making composite waste is removed the bulk mechanical impurity through grid, via hole diameter is that 90 purposes are tiltedly netted receipts slurry recovery fiber fines, after enter air-floating apparatus, handle through flocculation agent (mass concentration is that 10% polymerize aluminum chloride or mass concentration are 0.1% polyacrylamide), remove small suspended substance, enter settling tank then, regulate water quality PH=6～9, COD＜3000mg/l by the water yield.Through after the pre-treatment, removed after bulk suspended substance and the recovery staple fibre, enter hydrolysis acidification pool and enter the acidification hydrolization processing, pH value is in the 5.5-6.5 scope in the control hydrolysis pond, hydraulic detention time is 6-10 hour, its water outlet enters intermediate pool, utilize the PH Controlling System to regulate the pH value of intermediate pool water outlet in the 6.5-7.5 scope, intermediate pool enters from the bottom by sump pump and enters the anaerobically fermenting processing the anaerobic reactor, relies on the effect of anaerobion to make majority of organic pollutants be degraded into CH
4And CO
2Thereby, water quality is purified, its operational conditions is that volumetric loading is 3.0-5.0kgCOD/ (m
3.d), adopt the normal temperature anaerobic digestion, total residence time is 24-30h, and average sludge concentration (MLVSS) is 30-40g/L.The anaerobic reactor water outlet enters anoxic pond, dissolved oxygen (DO) content≤0.7mg/l by bottom aerating regulation anaerobic pond water outlet, filler degraded part difficult degradation by wherein and have the pollutent of inhibition, after enter oxidation ditch and carry out aerobe and handle, its operational conditions is 0.1kgBOD/ (kgmlss.d) for its sludge loading, hydraulic detention time is 26-32h, and average sludge concentration (MLSS) is 2700-3500mg/L, and dissolved oxygen is 0-2.5mg/l.By the unique effect that the multi-stage anaerobic that designs in the ditch and aerobic zone produce, strengthen NH
3The removal of the nitrated and nitrate of-N, after settling tank separates because of liquid, enter the BAF BAF and enter advanced treatment, rub through porous organic plastics filler fluidisation, make its surface keep higher biological activity, sewage is effectively purified in the fluidisation friction process, water outlet COD≤100mg/l, SS≤70mg/l.
Below be the wastewater treatment efficiency table:
Claims (4)
1. the purifying treatment method of a paper-making effluent, the COD≤5000mg/l of described paper-making effluent, SS≤2000mg/l, NH3-N≤100mg/l, P H value is 6-9, it is characterized in that passing through successively following steps:
(1) Wastewater Pretreatment: remove mechanical impurity, suspended substance, reclaim fiber fines, regulate water quality PH=6～9, COD＜3000mg/l;
(2) acidification hydrolization: waste water carries out acidification hydrolization at hydrolysis acidification pool to be handled, and control hydrolysis PH is slightly acidic, hydraulic detention time 6～10 hours, and temperature is 25～30 ℃, the water outlet of hydrolysis acidification pool enters intermediate pool, regulates intermediate pool PH=6.5～7.5;
(3) anaerobic biological treatment: the waste water of acidified hydrolysis enters anaerobic reactor, and the anaerobic reactor volumetric loading is 3.0-5.0kgCOD/ (m
3.d), adopt the normal temperature anaerobic digestion, total residence time is 24-30h, and average sludge concentration MLVSS is 30-40g/L;
(4) anaerobic treatment: the waste water through anaerobic biological treatment is handled through anoxic pond, and aeration flexible pipe is equipped with in the anoxic pond bottom, and the suspension type 3-D filler is equipped with in the centre, the dissolved oxygen content≤0.7mg/l in the water outlet;
(5) aerobe is handled: the sewage through anaerobic treatment enters oxidation ditch system, and its sludge loading is 0.1kgBOD/ (kgMLSS.d), and hydraulic detention time is 26-32h, and average sludge concentration MLSS is 2700-3500mg/L, and dissolved oxygen is 0-2.5mg/l;
(6) advanced treatment: the sewage of handling through aerobe enters BAF through post precipitation, and the sponge plastics filler is adopted in the filter tank, and through the water COD≤100mg/l of advanced treatment, SS≤70mg/l reaches reuse or qualified discharge standard.
2. the purifying treatment method of paper-making effluent according to claim 1, the preprocessing process that it is characterized in that described step (1) is: waste water is removed the bulk mechanical impurity through grid, via hole diameter is that 90 purposes are tiltedly netted receipts slurry recovery fiber fines, after enter air-floating apparatus, handle through flocculation agent, remove small suspended substance, enter settling tank then, regulate water quality PH=6～9, COD＜3000mg/l by the water yield.
3. the purifying treatment method of paper-making effluent according to claim 2 is characterized in that it is that 10% polymerize aluminum chloride or mass concentration are 0.1% polyacrylamide that described flocculation agent adopts mass concentration.
4. the purifying treatment method of paper-making effluent according to claim 1 is characterized in that described step (2) adopts hydrochloric acid or sodium hydroxide to carry out the adjusting of PH.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100692370A CN100402448C (en) | 2006-09-27 | 2006-09-27 | Paper-making effluent purifying treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100692370A CN100402448C (en) | 2006-09-27 | 2006-09-27 | Paper-making effluent purifying treatment process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1931749A CN1931749A (en) | 2007-03-21 |
| CN100402448C true CN100402448C (en) | 2008-07-16 |
Family
ID=37877798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100692370A Expired - Fee Related CN100402448C (en) | 2006-09-27 | 2006-09-27 | Paper-making effluent purifying treatment process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100402448C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101549932B (en) * | 2009-05-14 | 2011-03-30 | 蔡志武 | Integrated production method of organic sewage/waste residue treatment, microalgae culturing and oil refining |
| CN101708927B (en) * | 2009-12-03 | 2011-11-09 | 中冶纸业银河有限公司 | Method for deeply processing waste water from paper making |
Families Citing this family (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101050044B (en) * | 2007-05-14 | 2010-05-26 | 庞鹏远 | Method for carrying out advanced treatment on papermaking sewage |
| FI122241B (en) | 2007-06-15 | 2011-10-31 | Andritz Oy | Procedure in connection with pulp washing at a pulp mill |
| FI20080298L (en) | 2007-06-15 | 2009-10-22 | Andritz Oy | Procedure for the treatment and use of liquid streams in a pulp mill |
| FI122812B (en) | 2007-06-15 | 2012-07-13 | Andritz Oy | A method for treating fluid flows at a pulp mill |
| CN100467406C (en) * | 2007-06-25 | 2009-03-11 | 张立省 | Process of treating acetic acid producing effluent and papermaking waste water comprehensively |
| CN101734791B (en) * | 2008-11-26 | 2011-07-27 | 孙光志 | Method for treating biological sewage |
| CN101560043B (en) * | 2009-04-09 | 2012-06-27 | 宇星科技发展(深圳)有限公司 | Papermaking wastewater treatment device |
| CN101913747B (en) * | 2010-07-16 | 2012-06-27 | 华南农业大学 | Method for producing methane by combination fermentation of paper mill sludge and food waste |
| CN101955305A (en) * | 2010-10-19 | 2011-01-26 | 江苏省环境科学研究院 | A kind of paper waste combined treatment process |
| CN102531275B (en) * | 2010-12-30 | 2014-02-26 | 上海洗霸科技股份有限公司 | Treatment process for recycling water in pulping and papermaking wastewater |
| CN102295345A (en) * | 2011-06-17 | 2011-12-28 | 山东贵和显星纸业有限公司 | Novel process of sewage treatment anaerobic synergism |
| CN103693801A (en) * | 2012-09-21 | 2014-04-02 | 北京晓清环保工程有限公司 | Treating method of papermaking wastewater |
| CN103011502B (en) * | 2012-12-05 | 2014-06-18 | 浙江理工大学 | Method for deeply treating waste paper pulping and papermaking comprehensive wastewater by using ultrafiltration membrane |
| CN103043864A (en) * | 2012-12-07 | 2013-04-17 | 常州大学 | Treatment method of waste water in leather industry |
| CN106277554A (en) * | 2015-05-27 | 2017-01-04 | 麦王环境技术股份有限公司 | The process Processes and apparatus of the waste water produced in methacrylic acid and ester production process |
| CN105152334A (en) * | 2015-10-13 | 2015-12-16 | 肖白玉 | Textile mill dyeing wastewater treatment method and system |
| CN105129995A (en) * | 2015-10-13 | 2015-12-09 | 周丽娜 | Pharmaceutical factory waste water treatment technology and system |
| CN105254014A (en) * | 2015-11-20 | 2016-01-20 | 江苏合一水业有限公司 | Multifunctional sewage treatment pond |
| CN106892499A (en) * | 2015-12-17 | 2017-06-27 | 南京科技职业学院 | A kind of method of multimedium BAF and its treatment prepared slices of Chinese crude drugs waste water |
| CN105585218B (en) * | 2016-01-13 | 2018-11-02 | 梧州市华鸿污水处理有限公司 | Wastewater from mechanical industry treatment process |
| CN107055951A (en) * | 2017-03-14 | 2017-08-18 | 北京化工大学 | A kind of biological treatment of amino acid wastewater |
| CN107963784B (en) * | 2017-11-29 | 2019-01-22 | 山鹰国际控股股份公司 | A kind of paper-making effluent treating process |
| CN108439722A (en) * | 2018-05-14 | 2018-08-24 | 马鞍山市润启新材料科技有限公司 | A kind of sewage-treatment plant |
| CN108975628A (en) * | 2018-08-20 | 2018-12-11 | 朱翠帮 | A kind for the treatment of process of mining area sewage |
| CN109205940A (en) * | 2018-09-30 | 2019-01-15 | 广西大学 | A kind of processing of alkalinity defibrination waste water and circulation utilization method |
| CN110092547A (en) * | 2019-05-28 | 2019-08-06 | 宁波三素生物技术研究合伙企业(有限合伙) | Bamboo pulping sewage water treatment method |
| CN110482694A (en) * | 2019-07-22 | 2019-11-22 | 四川工商职业技术学院 | A kind of high-rate anaerobic reactor external circulating system and external circulation process |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2005437A6 (en) * | 1987-11-10 | 1989-03-01 | Knp Papier Bv | Purificn. of residual water from paper pulp prodn. |
| CN1587089A (en) * | 2004-08-27 | 2005-03-02 | 华南理工大学 | Process for treatnig paper-making waste water of waste paper |
| CN1693235A (en) * | 2005-02-25 | 2005-11-09 | 清华大学 | Air lifting deep water type oxidizing tank |
| CN1710193A (en) * | 2005-06-09 | 2005-12-21 | 西安交通大学 | Process for realizing waste-water zero-discharge of papermaking from waste paper by anaerobic-aerobic treatment |
| CN1803669A (en) * | 2006-01-20 | 2006-07-19 | 王照华 | Method for treating middle section water of alkaline straw pulp |
-
2006
- 2006-09-27 CN CNB2006100692370A patent/CN100402448C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2005437A6 (en) * | 1987-11-10 | 1989-03-01 | Knp Papier Bv | Purificn. of residual water from paper pulp prodn. |
| CN1587089A (en) * | 2004-08-27 | 2005-03-02 | 华南理工大学 | Process for treatnig paper-making waste water of waste paper |
| CN1693235A (en) * | 2005-02-25 | 2005-11-09 | 清华大学 | Air lifting deep water type oxidizing tank |
| CN1710193A (en) * | 2005-06-09 | 2005-12-21 | 西安交通大学 | Process for realizing waste-water zero-discharge of papermaking from waste paper by anaerobic-aerobic treatment |
| CN1803669A (en) * | 2006-01-20 | 2006-07-19 | 王照华 | Method for treating middle section water of alkaline straw pulp |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101549932B (en) * | 2009-05-14 | 2011-03-30 | 蔡志武 | Integrated production method of organic sewage/waste residue treatment, microalgae culturing and oil refining |
| CN101708927B (en) * | 2009-12-03 | 2011-11-09 | 中冶纸业银河有限公司 | Method for deeply processing waste water from paper making |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1931749A (en) | 2007-03-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100402448C (en) | Paper-making effluent purifying treatment process | |
| CN100398470C (en) | Infiltration method for treating garbage | |
| US8894855B2 (en) | Hybrid aerobic and anaerobic wastewater and sludge treatment systems and methods | |
| CN101357813B (en) | Processing method for domestic garbage leachate | |
| CN101357812B (en) | Processing method for domestic garbage leachate | |
| CN101560039B (en) | Landfill leachate wastewater treatment system and process thereof | |
| CN101967031B (en) | Garbage percolate treatment method | |
| CN110902962A (en) | Wastewater system for treating melamine adhesive film paper | |
| CN104591473A (en) | Advanced nitrogen and phosphorus removal technology | |
| CN201932982U (en) | Combined system using micro-electrolysis-MBR (membrane bio-reactor) combined technology to treat printing and dyeing wastewater | |
| CN101781056B (en) | Treatment method of waste papermaking water | |
| CN100519440C (en) | Method for treating wastewater by technique of sludge decrement type biomembrane piled ball packing | |
| CN1686874A (en) | Technique of enzyme method for treating organic wastewater and matched equipment | |
| CN100364903C (en) | Method for carrying out nitrite denitrification using granular sludge | |
| CN116693112A (en) | Treatment method of landfill leachate with low carbon nitrogen ratio | |
| CN201406361Y (en) | Waste leachate waste water processing device | |
| CN212246699U (en) | Neomycin sulfate waste water treatment device | |
| CN209468283U (en) | Chilled processing waste water processing unit | |
| CN108178424B (en) | Double-reflux activated sludge bed sewage treatment method | |
| CN114436472A (en) | Movable advanced sewage treatment system based on embedded microorganism construction method | |
| CN107522344A (en) | A kind of sewage water treatment method of percolate | |
| CN112499894A (en) | Integrated MBBR (moving bed biofilm reactor) process for treating high-organic high-ammonia nitrogen industrial wastewater | |
| CN105110582A (en) | Sewage treatment system based on bio-membrane reactor and photobioreactor | |
| CN110921979A (en) | Waste water treatment device | |
| CN221296598U (en) | Pharmacy effluent disposal system |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080716 Termination date: 20190927 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |