CN104828928A - Preparation method of filtering material of nitrogen and phosphorus removal bio-filter tank - Google Patents
Preparation method of filtering material of nitrogen and phosphorus removal bio-filter tank Download PDFInfo
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- CN104828928A CN104828928A CN201410048193.8A CN201410048193A CN104828928A CN 104828928 A CN104828928 A CN 104828928A CN 201410048193 A CN201410048193 A CN 201410048193A CN 104828928 A CN104828928 A CN 104828928A
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- nitrogen
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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
- 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
Abstract
The invention relates to a preparation method of a filtering material of a nitrogen and phosphorus removal bio-filter tank. The method includes following steps: (1) crushing steel slag, scrap iron and zeolite; (2) weighing following raw materials: steel powder, iron powder, zeolite powder, activated carbon and cement according to the corresponding mass percentage ratio of 45%:10%:20%:10%:15%, and mixing the raw materials to obtain a mixture material; (3) placing plastic hollow floated balls being 10 mm in diameter into a coating machine, adding the mixture material with water sprayed into the coating machine to obtain coated filtering material; and (4) maintaining the coated filtering material in a natural maintaining chamber at 15-25 DEG C under the relative humidity of 40-60% for 7-10 days to obtain the filtering material of a nitrogen and phosphorus removal bio-filter tank. The filtering material is low in production cost, is suitable for large-scale production, is excellent in biological nitrogen and phosphorus removal effect, is not liable to cause blocking and is not liable to subject to temperature, can be widely applied in the fields of treatment of low-concentration domestic sewage and dispersing-type village domestic sewage and can achieve a synchronous nitrogen and phosphorus removal effect.
Description
Technical field
The present invention relates to a kind of preparation method of nitrogen and phosphorus removal bio filter, specifically a kind of method adopting steel-making slag powder, iron powder, cement, gac, zeolite powder etc. to make nitrogen and phosphorus removal bio filtrate.
Background technology
The mentality of designing that wastewater treatment contact oxidation method is filtered soon with feedwater, as a kind of waste water treatment process of routine, has fully been used for reference in biological filter.The features such as biological filter integrates aeration, high filtering velocity, retains suspended substance, regularly back flushing, run simple and easy, energy consumption is little, and by force, this technology obtains extensive promotion and application in the world to anti impulsion load ability.With the fixing filtrate loaded in biological filter for carrier, make the surface growth large number of biological film of filtrate.When pending current are out-of-date, give full play to the physical adsorption of the biological metabolism of microorganism on microbial film, biofloculation, microbial film and filler and retain and the interior classification predation along water (flow) direction food chain of reactor, achieve the efficient removal of pollutent, utilize existence that is aerobic in biological filter, anoxic zones simultaneously, realize the function of denitrogenation dephosphorizing.
The selection of filtrate is the key that win or lose is run in biological filter.On the one hand filtrate is as microorganism habitat, influential system biomass number, and the performance of biological filter and processing efficiency.On the other hand, the selection of filler is also directly connected to the Financial cost for the treatment of system.In general, the selection principle of filler mainly contains: intensity is large, chemistry and biologically stable is good, not stripping objectionable impurities, be easy to microbial film attachment, unrestraint effect harmless to the microorganism of attachment, specific surface area is large, voidage is large, durable in use, cheap and easy to get, transport, store and install more convenient etc.Such filtrate is conducive to the mass transfer process of desired nutritional material and metabolic waste in microorganism colonization and microbial metabolism, and then improves sewage treating efficiency.
Common filter mainly contains zeolite, haydite, coke, quartz sand, gac, the spherical clay of expansion, heaving shales, vinylbenzene, polyethylene etc.At present, various new filtrate has been developed in domestic biological process of wastewater treatment, but existing filtrate respectively has its weakness in physics characteristic and microbial film adhesion property etc., they or insufficient strength, cracky, or smooth surface, microorganism are difficult to biofilm, or density is large, easily harden, or expensive, regeneration difficulty, and current filtrate used possesses the characteristic intensifying microorganism active, poor denitrification and dephosphorization effect hardly.Therefore, the filter material for biological filter of development of new, improves filtrate deficiency, significant for raising biological filter operating performance.
Summary of the invention
The present invention is directed to the at present problem such as conventional filter material for biological filter poor denitrification and dephosphorization effect, aim to provide and a kind ofly can be used in biological filter and the filter material for biological filter preparation method of filter tank operating performance can be improved.
The preparation technology of this nitrogen and phosphorus removal bio filtrate is as follows:
A. slag, iron filings are placed in grinding in ball grinder respectively, cross 400 mesh sieves, screening obtains comminuted steel shot, iron powder;
Zeolite is crossed 80 mesh sieves after jaw crusher, twin rollers fragmentation, obtains zeolite powder.
B. measure steel-making slag powder according to mass percent: iron powder: zeolite powder: gac: cement=45%:10%:20%:10%:15%, they are mixed and is prepared burden.
C. in seed-coating machine, be sprinkled into plastic hollow ball float (diameter 10mm), evenly spray water, make moistened surface; Be sprinkled into the batching mixed in B again, start seed-coating machine, ingredient bags is overlayed on plastic hollow ball float, be agglomerated into moist spherical particle, obtain the filtrate wrapped.
D. the filtrate wrapped is put in natural curing room, the temperature controlled in curing room is 15 DEG C ~ 25 DEG C, and relative humidity is 40% ~ 60%, and maintenance discharging in 7 ~ 10 days, is prepared into nitrogen and phosphorus removal bio filtrate.
Above-mentioned C step starts seed-coating machine and is, be 15 ° by the levelling of the drum-inclined angle of seed-coating machine, rotating speed is 50r/min, and while seed-coating machine rotates, batching is spread on water spray limit, limit;
Cement model as binding agent in above-mentioned B step is No. 325 Portland blast furnace slag cements.
When slag, iron filings being placed in ball mill respectively in above-mentioned steps A, slag, iron filings must not feed 2/3rds of the ball grinder volume exceeding ball mill.
When slag, iron filings being placed in ball mill respectively in above-mentioned steps A, weighing the grinding pot of ball mill, make the weight of 2 grinding pots consistent; Start ball mill, start grinding, after running 2 minutes at high speed, be adjusted to the slow speed of revolution, then grind end in 2 minutes, ground material is crossed 400 mesh sieves respectively, obtains iron powder, comminuted steel shot;
Filter material for biological filter prepared by the present invention has following characteristics:
1, because filtrate of the present invention adopts steel-making slag powder, iron powder, zeolite powder, gac, cement, and its particle diameter requires to carry out adjustment preparation according to denitrogenation dephosphorizing, therefore, the filter material for biological filter good denitrogenation and dephosphorization effect prepared, makes each index of water outlet reach country-level A standard.
2, filter material surface rough porous of the present invention, material non-toxic, does not tie glaze, is easy to microorganism colonization growth, has good synchronous denitrification dephosphorizing effect.
3, the good hydrophilic property of filtrate of the present invention, effectively can overcome traditional biological filter tank denitrogenation dephosphorizing efficiency for the treatment of low concentration sewage or domestic sewage in rural areas low, affect by suspended substance and the susceptible to plugging problem in filter tank, be conducive to the processing efficiency improving biological filter.
4, preparation method of the present invention is easy, and preparation cost is low, is applicable to applying.
Accompanying drawing explanation
Fig. 1 is schematic flow sheet of the present invention.
Embodiment
Embodiment 1
Slag, iron filings are placed in ball mill by A respectively, grinding, cross 400 mesh sieves, sieve particle diameter is less than 400 object comminuted steel shots, iron powder.
Zeolite is crossed 80 mesh sieves (diameter is about 0.2mm) after jaw crusher, twin rollers fragmentation, obtains zeolite powder.
B. measure steel-making slag powder according to mass percent: iron powder: zeolite powder: gac: cement=45:10:20:10:15%, they are mixed and is prepared burden.
C. in KF-02 model seed-coating machine, be sprinkled into the plastic hollow ball float (diameter 10mm) that Jiangxi Yi Yuan Industrial Co., Ltd. produces, evenly spray water, make moistened surface; Be sprinkled into the batching mixed in B again, start seed-coating machine, ingredient bags is overlayed on plastic hollow ball float, be agglomerated into moist spherical particle, obtain the filtrate wrapped.
D. the filtrate wrapped is put in natural curing room, the temperature controlled in curing room is 15 DEG C ~ 25 DEG C, and relative humidity is 40% ~ 60%, and maintenance discharging in 7 ~ 10 days, is prepared into nitrogen and phosphorus removal bio filtrate.
Above-mentioned startup seed-coating machine is: the drum-inclined angle of seed-coating machine is adjusted to 15 °, and rotating speed is 50r/min, and while seed-coating machine rotates, batching is spread on water spray limit, limit.
Cement model as binding agent in the batching of above-mentioned B step is No. 325 Portland blast furnace slag cements.
Embodiment 2
Nitrogen and phosphorus removal bio filtrate embodiment 1 prepared is used for two-stage biofilter, carries out feasibility trial run, and processes the sewage of certain sewage treatment plants, investigates its Nitrogen/Phosphorus Removal.
Get the water inlet of certain sewage work's sanitary sewage as this technique, controlling this technique hydraulic detention time is 6h, and gas-water ratio is 20:1, and reflux ratio is 50%.After process operation for some time, COD, ammonia nitrogen, total phosphorus, nitrogen removal rate is as following table:
| Project | COD/mg·L-1 | Ammonia nitrogen/mgL-1 | Total phosphorus/mgL-1 | Total nitrogen/mgL -1 |
| Water inlet | 180 | 20 | 2.6 | 21.5 |
| Water outlet | 12 | 0 | 0.028 | 4.3 |
| Clearance/% | 93 | 100 | 98.8 | 80 |
As can be seen from table, COD, ammonia nitrogen, total nitrogen, total phosphorus can both reach the one-level A standard of GB18918-2002, the clearance of total nitrogen, total phosphorus is respectively up to 93%, 98.8%, 80%, water outlet is as clear as crystal, so the nitrogen and phosphorus removal bio filtrate prepared by the present invention can reach the effect of synchronous denitrification dephosphorizing.
Claims (3)
1. a preparation method for nitrogen and phosphorus removal bio filter, is characterized in that:
A. slag, iron filings are placed in grinding in ball grinder respectively, cross 400 mesh sieves, screening, obtains comminuted steel shot, iron powder;
Zeolite crosses 80 mesh sieves after jaw crusher, twin rollers fragmentation, obtains zeolite powder;
B. comminuted steel shot is measured according to mass percent: iron powder: zeolite powder: gac: they are mixed by cement=45%:10%:20%:10%:15%, are prepared burden;
C. in seed-coating machine, be sprinkled into the plastic hollow ball float that diameter is 10mm, evenly spray water, make moistened surface; Be sprinkled into B again and walk the batching obtained, start seed-coating machine, the ingredient bags that B is walked overlays on plastic hollow ball float, is agglomerated into moist spherical particle, obtains the filtrate wrapped;
D. the filtrate wrapped is put in natural curing room, the temperature controlled in curing room is 15 DEG C ~ 25 DEG C, and relative humidity is 40% ~ 60%, and maintenance discharging in 7 ~ 10 days, namely prepares nitrogen and phosphorus removal bio filter;
It is make the drum-inclined angle of seed-coating machine be 15 ° that above-mentioned C step starts seed-coating machine, and rotating speed is 50r/min, and while seed-coating machine rotates, batching is spread on water spray limit, limit;
Cement as binding agent in above-mentioned B step is No. 325 Portland blast furnace slag cements.
2. the preparation method of a kind of nitrogen and phosphorus removal bio filter according to claim 1, is characterized in that: when slag, iron filings being placed in ball mill respectively in steps A, and slag, iron filings must not feed 2/3rds of the ball grinder volume exceeding ball mill.
3. the preparation method of a kind of nitrogen and phosphorus removal bio filter according to claim 1, it is characterized in that: when slag, iron filings being placed in grinding in ball grinder respectively in steps A, first weigh the grinding pot of ball mill, make the weight of 2 grinding pots consistent, restart ball mill, start grinding, after running 2 minutes at high speed, be adjusted to the slow speed of revolution, grind 2 minutes again, terminate, ground material is crossed 400 mesh sieves respectively, obtains iron powder, comminuted steel shot.
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105819632A (en) * | 2016-05-24 | 2016-08-03 | 安徽美自然环境科技有限公司 | Method for improving ammonium-nitrogen removal rate in discharged water by using zeolite aerated concrete to construct drainage pipe |
| CN105906154A (en) * | 2016-06-14 | 2016-08-31 | 同济大学 | Resourceful treatment and recycling method of circuit board wastewater |
| CN106186250A (en) * | 2016-07-12 | 2016-12-07 | 晓清环保科技股份有限公司 | A kind of dephosphorization material and preparation method thereof |
| CN106315980A (en) * | 2016-09-22 | 2017-01-11 | 同济大学 | System for deep treatment of secondary effluent of domestic sewage |
| CN106758669A (en) * | 2016-12-09 | 2017-05-31 | 福建工程学院 | A kind of ecological permeable road surface |
| CN107445216A (en) * | 2016-06-01 | 2017-12-08 | 张会君 | A kind of formula and preparation method for sewage disposal dephosphorization filler |
| CN107698020A (en) * | 2017-09-27 | 2018-02-16 | 河海大学 | A kind of biomass solid carbon source haydite and its preparation method and application |
| CN108101230A (en) * | 2017-12-23 | 2018-06-01 | 安徽睿知信信息科技有限公司 | A kind of sewage disposal speed divides the preparation method of biochemistry ball |
| CN109847699A (en) * | 2019-02-15 | 2019-06-07 | 中国环境科学研究院 | A kind of denitrogenation dephosphorizing compounded mix and preparation method |
| CN110305859A (en) * | 2019-07-31 | 2019-10-08 | 陕西麦可罗生物科技有限公司 | A method of biological nitrogen is produced using kasugarnycin and polyoxin bacteria residue |
| CN110642345A (en) * | 2019-09-02 | 2020-01-03 | 济南大学 | Sewage dephosphorization flocculant and preparation method and application thereof |
| CN110734133A (en) * | 2019-11-06 | 2020-01-31 | 合肥学院 | nanometer zero-valent iron-nickel composite porous material, preparation method and application thereof |
| CN110734128A (en) * | 2019-11-06 | 2020-01-31 | 合肥学院 | nanometer zero-valent metal light porous spherical functional material prepared based on meteorite, and preparation method and application thereof |
| CN110734127A (en) * | 2019-11-06 | 2020-01-31 | 合肥学院 | carbon composite nano zero-valent metal porous functional material, preparation method and application thereof |
| CN110776089A (en) * | 2019-11-07 | 2020-02-11 | 苏州方舟环境发展有限公司 | Denitrification filter material |
| CN111807504A (en) * | 2020-08-10 | 2020-10-23 | 吴昊 | Dephosphorization and denitrification wetland filler and preparation method thereof |
| CN111892166A (en) * | 2020-08-11 | 2020-11-06 | 南通大学 | Active biological filter material and efficient nitrogen and phosphorus removal method for sewage by using same |
| CN113248075A (en) * | 2021-03-29 | 2021-08-13 | 贵州雏阳生态环保科技有限公司 | Preparation and use method of wetland filler |
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| CN2543954Y (en) * | 2002-05-08 | 2003-04-09 | 蒋康豫 | Aeration biological filter material for filter pool |
| CN101708399A (en) * | 2009-11-11 | 2010-05-19 | 济南大学 | Porous slag filter material and preparation method thereof |
| CN101716441A (en) * | 2009-11-23 | 2010-06-02 | 济南大学 | Burn-free porous steel slag filter material and preparation method thereof |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105819632A (en) * | 2016-05-24 | 2016-08-03 | 安徽美自然环境科技有限公司 | Method for improving ammonium-nitrogen removal rate in discharged water by using zeolite aerated concrete to construct drainage pipe |
| CN107445216A (en) * | 2016-06-01 | 2017-12-08 | 张会君 | A kind of formula and preparation method for sewage disposal dephosphorization filler |
| CN105906154A (en) * | 2016-06-14 | 2016-08-31 | 同济大学 | Resourceful treatment and recycling method of circuit board wastewater |
| CN105906154B (en) * | 2016-06-14 | 2019-04-16 | 同济大学 | A kind of method of the recycling treatment recycling of board wastewater |
| CN106186250B (en) * | 2016-07-12 | 2020-04-24 | 晓清环保科技股份有限公司 | Phosphorus removal material and preparation method thereof |
| CN106186250A (en) * | 2016-07-12 | 2016-12-07 | 晓清环保科技股份有限公司 | A kind of dephosphorization material and preparation method thereof |
| CN106315980A (en) * | 2016-09-22 | 2017-01-11 | 同济大学 | System for deep treatment of secondary effluent of domestic sewage |
| CN106758669A (en) * | 2016-12-09 | 2017-05-31 | 福建工程学院 | A kind of ecological permeable road surface |
| CN107698020A (en) * | 2017-09-27 | 2018-02-16 | 河海大学 | A kind of biomass solid carbon source haydite and its preparation method and application |
| CN108101230A (en) * | 2017-12-23 | 2018-06-01 | 安徽睿知信信息科技有限公司 | A kind of sewage disposal speed divides the preparation method of biochemistry ball |
| CN109847699A (en) * | 2019-02-15 | 2019-06-07 | 中国环境科学研究院 | A kind of denitrogenation dephosphorizing compounded mix and preparation method |
| CN110305859A (en) * | 2019-07-31 | 2019-10-08 | 陕西麦可罗生物科技有限公司 | A method of biological nitrogen is produced using kasugarnycin and polyoxin bacteria residue |
| CN110642345A (en) * | 2019-09-02 | 2020-01-03 | 济南大学 | Sewage dephosphorization flocculant and preparation method and application thereof |
| CN110642345B (en) * | 2019-09-02 | 2021-12-31 | 济南大学 | Sewage dephosphorization flocculant and preparation method and application thereof |
| CN110734133A (en) * | 2019-11-06 | 2020-01-31 | 合肥学院 | nanometer zero-valent iron-nickel composite porous material, preparation method and application thereof |
| CN110734128A (en) * | 2019-11-06 | 2020-01-31 | 合肥学院 | nanometer zero-valent metal light porous spherical functional material prepared based on meteorite, and preparation method and application thereof |
| CN110734127A (en) * | 2019-11-06 | 2020-01-31 | 合肥学院 | carbon composite nano zero-valent metal porous functional material, preparation method and application thereof |
| CN110734133B (en) * | 2019-11-06 | 2022-04-15 | 合肥学院 | Nano zero-valent iron-nickel composite porous material, preparation method and application thereof |
| CN110776089A (en) * | 2019-11-07 | 2020-02-11 | 苏州方舟环境发展有限公司 | Denitrification filter material |
| CN111807504A (en) * | 2020-08-10 | 2020-10-23 | 吴昊 | Dephosphorization and denitrification wetland filler and preparation method thereof |
| CN111892166A (en) * | 2020-08-11 | 2020-11-06 | 南通大学 | Active biological filter material and efficient nitrogen and phosphorus removal method for sewage by using same |
| CN113248075A (en) * | 2021-03-29 | 2021-08-13 | 贵州雏阳生态环保科技有限公司 | Preparation and use method of wetland filler |
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