CN1785839A - Method for simultaneously remoring sulfurand phosphorus of city town sewage - Google Patents
Method for simultaneously remoring sulfurand phosphorus of city town sewage Download PDFInfo
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- CN1785839A CN1785839A CNA2005100304968A CN200510030496A CN1785839A CN 1785839 A CN1785839 A CN 1785839A CN A2005100304968 A CNA2005100304968 A CN A2005100304968A CN 200510030496 A CN200510030496 A CN 200510030496A CN 1785839 A CN1785839 A CN 1785839A
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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
- 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
Abstract
The present invention relates to a method for simultaneously removing sulfur and removing phosphorus from urban sewage. Said method is characterized by that in the process of urban sewage anaerobic treatment, in the conventional expanded granular sludge bed (EGSB) reactor the iron scale or iron chipings can be added, the volume of iron scale or iron chipings is 0.5-1.5% of volume of reactor. In the iron scale or iron chipings the carbon is contained, and said carbon and iron are formed into microcell to make iron lose electrons to form Fe2+ so as to further form Fe(OH)2 flocculating constituent.
Description
Technical field
The invention belongs to environmental technology field, be specifically related to a kind of method that can carry out the sulphur and phosphorus removing processing to town sewage simultaneously.
Background technology
Anaerobic biological treatment has following advantage: (1) construction, operation and simple to operate, and the expense of capital construction and operation is low; (2) energy requirement is low, save energy; (3) suitable treatment scale scope is wide, is convenient to dispersion treatment: (4) surplus sludge volume is few, good stability, dewatering is good, aftertreatment is easy etc., thereby is being used widely aspect the high concentrated organic wastewater processing.The characteristics of anaerobic biological treatment meet town sewage and handle required new technology requirement, but weak point is also arranged, as in anaerobic process except that the microorganism synthetic cell needs carbamate additives for low phosphorus, almost can not remove phosphorus; Contain vitriol in the town domestic sewage, sulfatereducting bacteria in anaerobic process with SO
4 2-Be reduced to H
2S, its reduzate H
2S is to methanogen, hydrogenogens, acetogen, zymogenic bacteria, even sulfatereducting bacteria itself is also had murder by poisoning, restraining effect, has a strong impact on the efficient of anaerobic reactor, even causes the destruction of whole anaerobic reactor operation; In the anaerobic gas that is produced, if any H
2S, then gas is poisonous, and serious stink is arranged.And sulfide can cause effluent COD concentration to increase in the water, can account for 50% of effluent COD concentration usually, thereby makes effluent COD concentration often greater than 100mg/L, does not reach country's discharging secondary standard.In order to overcome these defectives, have several different technology as follows at present:
(1) the anaerobic reactor water outlet is handled through coagulating sedimentation
The anaerobic reactor water outlet enters coagulative precipitation tank, add precipitation agent (as ferrous sulfate, ferric sulfate, iron protochloride, iron(ic) chloride), coagulating agent (as polymerize aluminum chloride, PAC), coagulant aids (as polyacrylamide, PAM) waits sulfide and the phosphorus that can remove in the sewage.Its advantage is sulfide and the phosphorus that can remove simultaneously in the anaerobic reactor water outlet, and research and engineering practice show that there are some following defectives in it: (1) many coagulative precipitation tanks increase initial cost; (2) the add-on fibrous root of precipitation agent etc. is decided according to the amount of water outlet sulfide and phosphorus, the operational administrative trouble; (3) iron sulphide of Xing Chenging or Iron sulfuret throw out are tiny especially, even add again coagulating agent (polymerize aluminum chloride, PAC), coagulant aids (polyacrylamide, PAM), and well flocculation of control, precipitation fluidised form etc., its water outlet SS is still higher, has reduced the removal efficient of sulfide and phosphorus; (4) throw outs such as iron sulphide of Xing Chenging or Iron sulfuret are black, therefore cause effluent color dilution to increase; (5) H in can not controlling reactor
2The restraining effect of S and stink.
(2) adding coagulating sedimentation before anaerobic reactor handles
Town sewage is before entering anaerobic reactor, be introduced into coagulative precipitation tank, add precipitation agent (as iron protochloride, iron(ic) chloride, avoid using ferrous sulfate, ferric sulfate), coagulating agent is (as polymerize aluminum chloride, PAC), coagulant aids is (as polyacrylamide, PAM) etc., can remove effectively phosphorus and remove to suspend simultaneously with the colloidal organism, but studies show that there are some following defectives in it: (1) town sewage organic concentration is low, organic concentration is lower after the front coagulating sedimentation is handled, increase the difficulty of anaerobic treatment, reduced the processing efficiency of anaerobic reactor; (2) coagulating sedimentation produces a large amount of unstable mud, needs further to stablize, handles, disposes, and has increased the sludge treatment expense; (3) concentration of phosphorus is too low, also can influence the efficient of follow-up anaerobic treatment; (4) can not remove vitriol effectively, can not reduce effectively because effluent COD concentration that sulfide causes increases, can not controlling reactor in H
2The restraining effect of S and stink.
(3) the anaerobic reactor water outlet is handled through aeration
The anaerobic reactor water outlet enters the aeration tank aeration, and airborne oxygen can partly be converted into elemental sulfur, inferior sulfate radical, sulfate radical etc. with sulfide, and part is with H
2The S stripping, but studies show that there are some following defectives in it: (1) can not remove phosphorus; (2) aeration has increased cost of equipment, capital cost, energy consumption, thereby causes increasing of laid down cost and working cost; (3) outside the sulfate radical, the sulphur of other form still can cause effluent COD concentration to increase as elemental sulfur etc.; (4) H in can not controlling reactor
2The restraining effect of S and stink.
(4) aerobe is handled
The anaerobic reactor water outlet enters the aerobe treatment system, and aerobe is handled need provide microorganism required oxygen, and this oxygen also can partly be converted into elemental sulfur, inferior sulfate radical, sulfate radical etc. with sulfide, and part is with H
2The S stripping: microorganism is synthetic can remove a part of phosphorus, also can further remove organism, ammonia nitrogen, but research and engineering practice show that there are some following defectives in it: (1) is because the town sewage organic concentration is low, organic concentration is lower after anaerobic biological treatment, after connect the oxygen biological treatment system, increase capital cost, cost of equipment, energy consumption greatly, thereby caused increasing greatly of whole laid down cost and working cost; (2) can not remove phosphorus effectively.Because the anaerobism outlet water organic substance concentration is too low, can not carry out Enhanced Biological Phosphorus Removal, only depend on a part of phosphorus of the synthetic removal of microorganism, generally can not make water outlet phosphorus up to standard.(3) H in can not controlling reactor
2The restraining effect of S and stink.
(5) artificial swamp
Soil adds the additive that contains calcium, iron, aluminium in artificial swamp, when the anaerobic reactor water outlet is crossed artificial swamp with surface runoff or underground undercurrent mode horizontal flow, calcium in the part of contaminated water in p and s thing and the soil, iron, thus the aluminium co-precipitation is removed in soil; Phosphorus becomes the integral part of plant materials in the part of contaminated water, removes by plant harvesting at last.Its advantage is the plant better appearance, can further remove organism, but there is the following defective in it: (1) hydraulic detention time is long, generally by the sky, and common 1～10 day, so volume is big, the capital cost height; (2) dark (height) degree is subjected to the restriction of plant-growth coring length, and hydraulic detention time is long, and floor space is big; (3) winter, plant-growth was restricted, and efficient reduces; The final outlet of the plant of (4) gathering in; (5) the soil saturation problem of long-time running; (6) H in can not controlling reactor
2The restraining effect of S and stink.
Summary of the invention
The objective of the invention is to propose a kind of simple to operate, with low cost, in anaerobic reactor (EGSB), can simultaneously effectively carry out the method that sulphur and phosphorus removing is handled town sewage.
What the present invention proposed carries out the method that sulphur and phosphorus removing is handled simultaneously to town sewage, be in anaerobic treatment process to town sewage, middle part and bottom at expansion anaerobic grain sludge bed bioreactor add iron filings or iron plane flower, and the volume of iron filings or iron plane flower is the 0.5-1.5% of reactor volume.
Current research is found, in the anaerobic treatment process of town sewage, COD has 50% sulfide that comes from the water outlet approximately in its water outlet, and promptly the sulfide in the water outlet causes water outlet COD to raise, and usually is difficult to reach urban wastewater treatment firm secondary discharge standard (COD＜100mg/L).Also find simultaneously, add iron filings or iron plane flower in expansion anaerobic grain sludge bed bioreactor (EGSB), wherein contain carbon, form microbattery with iron, iron loses electronics, generates Fe
2+, further form Fe (OH)
2Flco.Intermittently control experiment shows, anaerobic bacterium and the corrosion that contains organic town sewage quickening iron filings promote Fe
2+And Fe (OH)
2The generation of flco.Simultaneously, because the first step is hydrolysis, acid-producing in the organism anaerobic degradation process, cause the local acid environment of microcosmic in the reactor, and iron ion and Fe (OH) have also been quickened in acid corrosion
2The formation of flco.
General anaerobic reactor is not removed the function of phosphorus, and this is a deadly defect of the comprehensive qualified discharge of anaerobism technical finesse town sewage plant, but the adding and the Fe (OH) of iron filings or iron plane flower
2The formation of flco makes whirlwind-type EGSB reactor have the function of dephosphorization, because Fe (OH)
2Flco has the coagulating sedimentation effect to phosphorus, and its water outlet total phosphorus average out to 0.8mg/L less than 1mg/L, has reached the requirement of discharging standards one-level B index.
In addition, contain a certain amount of vitriol in the water of cities and towns.And sulfatereducting bacteria and methanogen have a lot of identical character, as belong to strictly anaerobic bacterium, optimum pH together for neutral, during optimum growth temperature is warm 30-35 ℃ or high temperature 50-55 ℃, utilize identical organic substrates, as acetate, H
2Deng.Sulfatereducting bacteria is SO in anaerobic process
4 2-Be H
2S, its reduzate H
2S to methanogen, produce hydrogen acetogen, zymogenic bacteria, even sulfatereducting bacteria itself is also had murders by poisoning, restraining effect, have a strong impact on the efficient of anaerobic reactor, even the destruction of causing whole anaerobic reactor to move.And in the anaerobic gas that is produced, if H is arranged
2S, then gas poisonous, serious stink arranged.The present invention adds iron filings in EGSB, it generates Fe
2+, and Fe
2+With S
2-In conjunction with generating insoluble FeS because the FeS solubility product is very little, can not form H again
2S overflows.Add iron filings in EGSB after, water outlet does not detect S yet
2-, controlled SO in the anaerobic process effectively
4 2-Reduzate H
2S is to the restraining effect of methanogen, sulfatereducting bacteria and other anerobe.Because the COD that sulfide is contributed also is removed, reduced effluent COD concentration simultaneously, water outlet COD can be reduced to 50mg/L, well below national urban wastewater treatment firm secondary discharge standard, has reached one-level A emission standard, has improved COD and has removed efficient.And H in the anaerobic gas that produces
2The concentration of S is decreased to below the detectability greatly, has solved the foul smell problem of anaerobic reaction tail gas.
Form Fe (OH) by iron ion
2Flco; make expansion anaerobic grain Sludge Bed have good adsorption and coagulating sedimentation performance; and the EGSB reactor has bigger aspect ratio and to the fluidised form at upper reaches; make the EGSB reactor when removing SS more near sludge blanket clarifier; integrate mixed, coagulation, precipitation, adsorb, hold back and filter; further improve the clearance to SS, water outlet SS can reach the requirement of discharging standards one-level B index 20mg/L.Because this good coagulation, precipitation, absorption, cutoff performance can be removed colloid and colourity in the waste water effectively, make water outlet limpid, transparent, colourity is less than 8.
The concrete operations step of the inventive method is as follows:
1, town sewage is entered whirlwind-type EGSB reactor by water distributor after the pre-treatment of necessity such as grid, sand setting, contact with highly active anaerobic sludge in the reactor from bottom to top, anaerobic sludge is made up of multiple Institute of Micro-biology such as zymogenic bacteria, product hydrogen acetogen, methanogen, sulfatereducting bacterias, and they are CH with the organic pollutant degradation in the town sewage
4, CO
2, H
2Final products such as O.Under the effect of sulfatereducting bacteria, the SO in the town sewage
4 2-Be degraded to H
2S.2～12 hours EGSB reactor waterpower residence time all can, optimal water power standing time is 3-6 hour.
2,, place iron filings or iron plane flower, the long-pending anaerobic reactor volumetrical 0.5-1.5% that accounts for of iron filings or iron plane quirk at whirlwind-type EGSB bottom and middle part.Under the acting in conjunction of anaerobion, the local acid environment of microcosmic, iron carbon microbattery, iron loses electronics, the Fe of generation
2+, further form Fe (OH)
2Flco.The Fe (OH) that forms
2Flco has the coagulating sedimentation effect to phosphorus, can remove phosphorus effectively; Generate Fe
2+With H
2S produces chemical reaction and generates the FeS throw out; These throw outs are through having bigger aspect ratio and to the EGSB reactor of the fluidised form at upper reaches, in the further absorption of anaerobic sludge, hold back, removed effectively under the filtering effect.Adding the iron filings amount mainly decides according to the cycle that water inlet sulfate concentration, flooding quantity, anaerobic reactor add iron.General geographic town sewage, adding the iron cycle is 2 years, adding the iron amount is 20-30kg/ (m
3Year).
3, with the supernatant liquor of the gas, liquid, solid triphase separator on EGSB reactor top, with 1: 1-1: 2 volume ratio is back to reactor bottom, to increase upflow velocity and stirring, improves rate of mass transfer, thereby improves the removal efficient of reactor.
4, be the gas, liquid, solid triphase separators on EGSB top, through this triphase separator, with the gas of the water outlet (liquid) after handling and generation and anaerobic sludge (Gu) effectively separate, water outlet can reach national urban wastewater treatment firm secondary or one-level B standard except that ammonia nitrogen.
After the present invention handles, can make water outlet COD≤100mg/l, BOD5≤30mg/l, SS≤30mg/l, TP≤3mg/l, indications such as colourity≤10 all can reach or be better than country's " urban wastewater treatment firm pollutant emission standard " secondary standard requirement (GB18918-2002).
The comparison of table 1. the present invention and typical anaerobic biological treatment dephosphorization desulfurization process (O/A and A/O)
| Feature | The present invention | Coagulating sedimentation+anaerobic reactor | Anaerobic reactor+aerobe is handled |
| Reaction tank volume (floor space) capital cost mud | Slight few, stable | By in many, instability | Mostly, instability |
| H in the medicament expense energy consumption working cost dephosphorization ability sulfur removal controlling reactor 2The restraining effect deodorizing capability of S | No slight greatly | Have by in the size | Not having the big nothing of size does not have |
Embodiment
The invention is further illustrated by the following examples.
Embodiment 1
Come from the somewhere municipal effluent and after grid, sand setting pre-treatment, enter the EGSB reactor by water distributor, contact with highly active anaerobic sludge in the reactor from bottom to top, and anaerobic sludge is made up of multiple Institute of Micro-biology such as zymogenic bacteria, product hydrogen acetogen, methanogen, sulfatereducting bacterias, and they are CH with the organic pollutant degradation in the town sewage
4, CO
2, H
2Final products such as O.Under the effect of sulfatereducting bacteria, the SO in the town sewage
4 2-Be H
2S, it is 0.5% that anaerobic reactor hydraulic detention time 3 hours, iron filings volume account for reactor volume.The supernatant that comes from the top triphase separator simultaneously is back to reactor bottom with 1: 1 ratio, to increase upflow velocity and stirring.Place iron filings at reactor bottom and middle part, form Fe
2+And Fe (OH)
2Flco can be removed sulfide and phosphorus effectively.
After testing, water inlet (following data are all in mean value, and intaking is the settling pit water outlet) COD mean value is 187mg/l, water outlet 73mg/l; Water inlet TP4.5mg/l, water outlet TP2.1mg/l; Water inlet SO
4 2-120mg/l, water outlet SO
4 2-40mg/l; Water inlet S
2-＜1mg/l (detectability), water outlet S
2-＜1mg/l (detectability); Water inlet SS 181mg/l, water outlet SS 25mg/l; Water inlet colourity 32, water outlet 8; Influent turbidity 143, delivery turbidity 7.
Embodiment 2
Come from the somewhere municipal effluent and after grid, sand setting pre-treatment, enter the EGSB reactor by water distributor, contact with highly active anaerobic sludge in the reactor from bottom to top, and anaerobic sludge is made up of multiple Institute of Micro-biology such as zymogenic bacteria, product hydrogen acetogen, methanogen, sulfatereducting bacterias, and they are CH with the organic pollutant degradation in the town sewage
4, CO
2, H
2Final products such as O.Under the effect of sulfatereducting bacteria, the SO in the town sewage
4 2-Be H
2S, it is 1.0% that anaerobic reactor hydraulic detention time 4 hours, iron filings volume account for reactor volume.The supernatant that comes from the top triphase separator simultaneously is back to reactor bottom with 1: 2 ratio, to increase upflow velocity and stirring.Place the iron plane flower at reactor bottom and middle part, form Fe
2+And Fe (OH)
2Flco can be removed sulfide and phosphorus effectively.
After testing, water inlet (following data are all in mean value, and intaking is the settling pit water outlet) COD mean value is 176mg/l, water outlet 70mg/l; Water inlet TP 3.8mg/l, water outlet TP 1.8mg/l; Water inlet SO
4 2-111mg/l, water outlet SO
4 2-32mg/l; Water inlet S
2-＜1mg/l (detectability), water outlet S
2-＜1mg/l (detectability); Water inlet colourity 28, water outlet 6; Influent turbidity 178, delivery turbidity 10.
Embodiment 3
Come from the somewhere municipal effluent and after grid, sand setting pre-treatment, enter the EGSB reactor by water distributor, contact with highly active anaerobic sludge in the reactor from bottom to top, and anaerobic sludge is made up of multiple Institute of Micro-biology such as zymogenic bacteria, product hydrogen acetogen, methanogen, sulfatereducting bacterias, and they are CH with the organic pollutant degradation in the town sewage
4, CO
2, H
2Final products such as O.Under the effect of sulfatereducting bacteria, the SO in the town sewage
4 2-Be H
2S, anaerobic reactor hydraulic detention time 12 hours, the iron plane quirk amasss and accounts for reactor volume is 1.5%.The supernatant that comes from the top triphase separator simultaneously is back to reactor bottom with 1: 1.5 ratio, to increase upflow velocity and stirring.Place the iron plane flower at reactor bottom and middle part, form Fe
2+And Fe (OH)
2Flco can be removed sulfide and phosphorus effectively.
After testing, water inlet (following data are all in mean value, and intaking is the settling pit water outlet) COD mean value is 201mg/l, water outlet 75mg/l; Water inlet TP 4.8mg/l, water outlet TP.8mg/l; Water inlet SO
4 2-111mg/l, water outlet SO
4 2-32mg/l; Water inlet S
2-5mg/l (detectability), water outlet S
2-＜1mg/l (detectability); Water inlet colourity 28, water outlet 6; Influent turbidity 178, delivery turbidity 10.
Claims (2)
1, a kind of method of town sewage being carried out simultaneously the sulphur and phosphorus removing processing, it is characterized in that town sewage is carried out in the anaerobic treatment process, middle part and bottom at expansion anaerobic grain sludge bed bioreactor add iron filings or iron plane flower, and the volume of iron filings or iron plane flower is the 0.5-1.5% of reactor volume.
2, the method that town sewage is carried out the sulphur and phosphorus removing processing simultaneously according to claim 1 is characterized in that concrete steps are as follows:
(1) town sewage is entered expansion anaerobic grain sludge bed bioreactor by water distributor after the pre-treatment of necessity such as grid, sand setting, contact with highly active anaerobic sludge in the reactor from bottom to top, anaerobic sludge is made up of multiple Institute of Micro-biology such as zymogenic bacteria, product hydrogen acetogen, methanogen, sulfatereducting bacterias, and they are CH with the organic pollutant degradation in the town sewage
4, CO
2, H
2Final products such as O; Under the effect of sulfatereducting bacteria, the SO in the town sewage
4 2-Be degraded to H
2S; Here, 2～12 hours reactor waterpower residence time;
(2), be placed with iron filings or iron plane flower, the long-pending anaerobic reactor volumetrical 0.5-1.5% that accounts for of iron filings or iron plane quirk at reactor lower part and middle part; Under the acting in conjunction of anaerobion, the local acid environment of microcosmic, iron carbon microbattery, iron loses electronics, the Fe of generation
2+, further form Fe (OH)
2Flco is to remove phosphorus effectively; The Fe that generates
2+With H
2S produces chemical reaction and generates the FeS throw out, and these throw outs are through reactors, in the further absorption of anaerobic sludge, hold back, removed effectively under the filtering effect;
(3) with the supernatant liquor of the gas, liquid, solid triphase separator on reactor top, with 1: 1-1: 2 volume ratio is back to reactor bottom, to increase upflow velocity and stirring;
(4) at the gas, liquid, solid triphase separator on reactor top, the water outlet after handling is effectively separated with the gas and the anaerobic sludge of generation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100304968A CN1785839A (en) | 2005-10-13 | 2005-10-13 | Method for simultaneously remoring sulfurand phosphorus of city town sewage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100304968A CN1785839A (en) | 2005-10-13 | 2005-10-13 | Method for simultaneously remoring sulfurand phosphorus of city town sewage |
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| Publication Number | Publication Date |
|---|---|
| CN1785839A true CN1785839A (en) | 2006-06-14 |
Family
ID=36783460
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|---|---|---|---|
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101838085A (en) * | 2010-06-22 | 2010-09-22 | 哈尔滨工业大学 | Method for carrying out resource non-aeration treatment on sewage of villages and towns |
| CN101591064B (en) * | 2009-06-27 | 2011-02-09 | 大连理工大学 | Anaerobic built-in zero-valent iron reactor |
| CN102161525A (en) * | 2011-03-02 | 2011-08-24 | 大连民族学院 | Dephosphorization method for wastewater by hydrolysis acidification |
| WO2012100550A1 (en) * | 2011-01-25 | 2012-08-02 | 大连理工大学 | Zero-valent iron two-phase anaerobic reactor |
| WO2012100551A1 (en) * | 2011-01-25 | 2012-08-02 | 大连理工大学 | Wastewater treatment method by anaerobic hydrolysis-acidification enhanced with zero-valent iron |
| CN103102012A (en) * | 2011-11-10 | 2013-05-15 | 中国石油化工股份有限公司 | Anaerobic biochemistry treatment method for cellulose ethanol wastewater |
| CN103663686A (en) * | 2013-11-12 | 2014-03-26 | 同济大学 | Hydrolytic acidification-catalyzed iron/anaerobic-aerobic biological dephosphorization coupling process |
| CN104828923A (en) * | 2015-03-31 | 2015-08-12 | 北京宝迪华禹科技发展有限公司 | Medicine for removing phosphorus from high phosphorus wastewater, and recovery technology thereof |
| CN105217836A (en) * | 2015-10-10 | 2016-01-06 | 上海电力学院 | A kind of method utilizing desulfurization wastewater to remove phosphor in sewage |
| CN105236565A (en) * | 2015-07-02 | 2016-01-13 | 中国环境科学研究院 | Magnetic-field-strengthening method for increasing COD (Chemical Oxygen Demand) removal efficiency of anaerobic wastewater treatment by iron powder |
| CN105541059A (en) * | 2015-12-08 | 2016-05-04 | 东北大学 | Device and method for degrading excess sludge through pretreatment-EGSB-microorganism-electrochemistry integration |
| CN113213709A (en) * | 2021-06-01 | 2021-08-06 | 浙江问源环保科技股份有限公司 | Method for enhancing phosphorus removal by applying iron shavings to rural domestic sewage lifting transformation |
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| CN101591064B (en) * | 2009-06-27 | 2011-02-09 | 大连理工大学 | Anaerobic built-in zero-valent iron reactor |
| CN101838085A (en) * | 2010-06-22 | 2010-09-22 | 哈尔滨工业大学 | Method for carrying out resource non-aeration treatment on sewage of villages and towns |
| US8758616B2 (en) | 2011-01-25 | 2014-06-24 | Dalian University Of Technology | Zero-valent iron two-phase anaerobic reactor |
| WO2012100550A1 (en) * | 2011-01-25 | 2012-08-02 | 大连理工大学 | Zero-valent iron two-phase anaerobic reactor |
| WO2012100551A1 (en) * | 2011-01-25 | 2012-08-02 | 大连理工大学 | Wastewater treatment method by anaerobic hydrolysis-acidification enhanced with zero-valent iron |
| US8758617B2 (en) | 2011-01-25 | 2014-06-24 | Dalian University Of Technology | Wastewater processing method of hydrolysis-acidification enhanced by addition of zero-valent iron (ZVI) |
| CN102161525A (en) * | 2011-03-02 | 2011-08-24 | 大连民族学院 | Dephosphorization method for wastewater by hydrolysis acidification |
| CN103102012B (en) * | 2011-11-10 | 2015-05-13 | 中国石油化工股份有限公司 | Anaerobic biochemistry treatment method for cellulose ethanol wastewater |
| CN103102012A (en) * | 2011-11-10 | 2013-05-15 | 中国石油化工股份有限公司 | Anaerobic biochemistry treatment method for cellulose ethanol wastewater |
| CN103663686A (en) * | 2013-11-12 | 2014-03-26 | 同济大学 | Hydrolytic acidification-catalyzed iron/anaerobic-aerobic biological dephosphorization coupling process |
| CN103663686B (en) * | 2013-11-12 | 2014-11-05 | 同济大学 | Hydrolytic acidification-catalyzed iron/anaerobic-aerobic biological dephosphorization coupling process |
| CN104828923A (en) * | 2015-03-31 | 2015-08-12 | 北京宝迪华禹科技发展有限公司 | Medicine for removing phosphorus from high phosphorus wastewater, and recovery technology thereof |
| CN105236565A (en) * | 2015-07-02 | 2016-01-13 | 中国环境科学研究院 | Magnetic-field-strengthening method for increasing COD (Chemical Oxygen Demand) removal efficiency of anaerobic wastewater treatment by iron powder |
| CN105236565B (en) * | 2015-07-02 | 2017-12-12 | 中国环境科学研究院 | A kind of method that magnetic field-intensification iron powder improves Anaerobic wastewater treatment COD removal efficiency |
| CN105217836A (en) * | 2015-10-10 | 2016-01-06 | 上海电力学院 | A kind of method utilizing desulfurization wastewater to remove phosphor in sewage |
| CN105217836B (en) * | 2015-10-10 | 2018-07-06 | 上海电力学院 | A kind of method using desulfurization wastewater removal phosphor in sewage |
| CN105541059A (en) * | 2015-12-08 | 2016-05-04 | 东北大学 | Device and method for degrading excess sludge through pretreatment-EGSB-microorganism-electrochemistry integration |
| CN105541059B (en) * | 2015-12-08 | 2017-10-24 | 东北大学 | Pre-process the united excess sludge decomposition apparatus of EGSB microorganism electrochemicals and method |
| CN113213709A (en) * | 2021-06-01 | 2021-08-06 | 浙江问源环保科技股份有限公司 | Method for enhancing phosphorus removal by applying iron shavings to rural domestic sewage lifting transformation |
| CN114735774A (en) * | 2022-05-17 | 2022-07-12 | 深圳泓沛环境科技有限公司 | Composite efficient phosphorus removal agent, preparation method and application |
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