CN102689987A - Sewage treatment system and method adopting aerobic-anaerobic combined aerated biological filter tank - Google Patents

Sewage treatment system and method adopting aerobic-anaerobic combined aerated biological filter tank Download PDF

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Publication number
CN102689987A
CN102689987A CN2012102077028A CN201210207702A CN102689987A CN 102689987 A CN102689987 A CN 102689987A CN 2012102077028 A CN2012102077028 A CN 2012102077028A CN 201210207702 A CN201210207702 A CN 201210207702A CN 102689987 A CN102689987 A CN 102689987A
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baf
aerobic
biological filter
anaerobism
sewage
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CN2012102077028A
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马放
周义
邱珊
徐善文
黄旭
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Harbin Institute of Technology
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Harbin Institute of Technology
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Abstract

The invention discloses sewage treatment system and method adopting an aerobic-anaerobic combined aerated biological filter tank, and relates to sewage treatment system and method. The problem that the removal effect of total nitrogen in the water is poor because the generation condition for nitration reaction and denitrification reaction cannot be met in the conventional sewage treatment system and method is solved. The sewage treatment system adopting the aerobic-anaerobic combined aerated biological filter tank comprises a sewage inlet pump, a gas pump, an iron-coating ceramsite and a common ceramsite, an aerobic aerated biological filter tank, a biological promotive ceramsite, an anaerobic aerated biological filter tank and a reflux pump. The sewage treatment method adopting the aerobic anaerobic combined aerated biological filter tank is realized in such a way that the sewage flows into the aerobic aerated biological filter tank from the sewage inlet pump and flows into the anaerobic aerated biological filter tank at the same time, outflow water of the aerobic aerated biological filter tank flows into the anaerobic aerated biological filter tank, and the whole work process comprises an aeration process and a reflux process. The sewage treatment system and method are applied to the field of city life sewage treatment.

Description

Adopt the Sewage treatment systems and the method for aerobic-anaerobic combination BAF
Technical field
The present invention relates to Sewage treatment systems and method.
Background technology
The BAF method; Be called for short BAF, be the end of the eighties at a kind of new bio embrane method sewage water treatment method that the America and Europe grows up, comparatively fast developed the beginning of the nineties; The BAF ability of disposing of sewage of maximum-norm reaches the hundreds of thousands of tpd, and possesses certain denitrogenation dephosphorizing ability.
The BAF method is compared with conventional activated sludge process, has organic loading height, floor space little (be conventional activated sludge process 1/3), less investment (practicing thrift 30%), can not produce advantages such as sludge bulking, the oxygen transmission efficiency is high, effluent quality is good.In addition, the BAF method has been saved post precipitation pond (second pond) as integrating bio-oxidation and the novel method of holding back suspended solids; Have volumetric loading, hydraulic load is big, hydraulic detention time is short, required initial cost is few; Operation energy consumption is low, and working cost is few.
At present; External generic forming method mainly contains the BIOSTYR method of French OTV S.A. registration; This method adopts biological filter, upper reaches, be a kind of reliable, level of automation is high, effluent quality good, the sewage water treatment method of new generation of strong shock resistance and energy efficient; And by the be engaged in BIOFOR method of (Degremont) company exploitation of sharp full water, this method is a upward flow, adopts the Biolite biofilter material, special high efficient aeration head, reactor drum flow field uniform distribution.In addition, Shanghai municipal administration institute Zou Wei state etc. has developed the BAF of a kind of BIOSMEDI by name, and it adopts the form of pulse backwashing, air water concurrent, can be used for little source of pollution water pretreatment or advanced treatment of wastewater.
Though above-mentioned process system and method can efficiently be removed the organic pollutant in the water, but still can't overcome the nitration reaction contradiction different with the anti-nitration reaction occurrence condition, thus barely satisfactory to the removal of total nitrogen in the water, greater than 15mg/L (ammonia nitrogen is greater than 10mg/L).
Summary of the invention
The present invention will solve in existing Sewage treatment systems and the method owing to can not satisfy the condition of nitration reaction and anti-nitration reaction generation simultaneously; And to the problem of the poor removal effect of total nitrogen in the water, and propose to adopt the Sewage treatment systems and the method for aerobic-anaerobic combination BAF.
Employing aerobic-anaerobic of the present invention combination aerating biological filter sewage processing system and method, said system by sewage intake pump 1, air pump 2, be coated with the iron haydite and form with ordinary ceramsite 3, aerobic aeration biological filter 4, biological promotion property haydite 5, anaerobism BAF 6 and reflux pump 7; Be coated with the inside that iron haydite and ordinary ceramsite 3 and biological promotion property haydite 5 are filled in aerobic aeration biological filter 4 and anaerobism BAF 6 respectively; The water outlet of sewage intake pump 1 is communicated with the import of aerobic aeration biological filter 4 and anaerobism BAF 6 respectively; The water outlet on 4 tops, aerobic aeration biological filter is communicated with 6 imports of anaerobism BAF; The water outlet on anaerobism BAF 6 tops is communicated with the formation return-flow system through reflux pump 7 with 6 imports of anaerobism BAF, air pump 2 is communicated with first aerating apparatus 4-2 of aerobic aeration biological filter 4 and the second aerating apparatus 6-2 of anaerobism BAF 6 respectively.
The sewage water treatment method of employing aerobic-anaerobic among the present invention combination aerating biological filter sewage processing system is achieved in that one, sewage is taken into account valve module 4-1 by sewage intake pump 1 through first flow and got in the aerobic aeration biological filter 4; Take into account valve module 6-1 through second flow simultaneously and get in the anaerobism BAF 6, the water outlet of aerobic aeration biological filter 4 is taken into account valve module 6-1 through second flow and is got in the anaerobism BAF 6; Two, a part of water outlet of anaerobism BAF 6 is discharged in the environment, and another part water outlet is taken into account in the valve module 6-1 entering anaerobism BAF 6 through the reflux pump 7 and second flow; Three, air pump 2 carries out aeration to aerobic aeration biological filter 4 and anaerobism BAF 6 respectively, and the air water volume ratio is lower than air water volume ratio when aerobic aeration biological filter 4 carried out aeration when wherein anaerobism BAF 6 being carried out aeration.
Beneficial effect of the present invention is following:
1, the present invention does not increase the reaction times; Nitration reaction and anti-nitration reaction be placed on respectively in two different reaction tanks carry out; Through load and the dissolved oxygen of controlling two reaction tanks; Make two reaction process be able to efficiently carry out, both reduced hydraulic detention time and corresponding capital cost, help the removal of total nitrogen again;
2, the anaerobism BAF is a carbon source with former water, need not additional carbon and basicity, and working cost is few;
That 3, fills in the aerobic aeration biological filter is coated with the content that the iron haydite can effectively be removed suspended substance, colloid and phosphoric in the sewage, reduces organic content in the water simultaneously, loads with carbon so can bear higher suspended substance;
The biology of 4, filling in anaerobism BAF promotion property haydite can make the script growth cycle long, and active lower denitrifying bacteria is bred fast, strengthens the removal of nitrogen element;
5, the anaerobism BAF is interior can't form thicker microbial film because the loss of sluicing can cause the reduction of denitrifying bacteria amount, and the present invention has solved the problems referred to above through increasing the return-flow system of anaerobism BAF.
Description of drawings
Fig. 1 is the structural representation that adopts the Sewage treatment systems of aerobic-anaerobic combination BAF.
Embodiment
Technical scheme of the present invention is not limited to following cited embodiment, also comprises the arbitrary combination between each embodiment.
Embodiment one: the Sewage treatment systems of employing aerobic-anaerobic in this embodiment combination BAF, said system by sewage intake pump 1, air pump 2, be coated with the iron haydite and form with ordinary ceramsite 3, aerobic aeration biological filter 4, biological promotion property haydite 5 and anaerobism BAF 6 and reflux pump 7; Be coated with the inside that iron haydite and ordinary ceramsite 3 and biological promotion property haydite 5 are filled in aerobic aeration biological filter 4 and anaerobism BAF 6 respectively; The water outlet of sewage intake pump 1 is communicated with the import of aerobic aeration biological filter 4 and anaerobism BAF 6 respectively; The water outlet on 4 tops, aerobic aeration biological filter is communicated with 6 imports of anaerobism BAF; The water outlet on anaerobism BAF 6 tops is communicated with the formation return-flow system through reflux pump 7 with 6 imports of anaerobism BAF, air pump 2 is communicated with first aerating apparatus 4-2 of aerobic aeration biological filter 4 and the second aerating apparatus 6-2 of anaerobism BAF 6 respectively.
Used Sewage treatment systems among the present invention; Through setting oxidation and aeration biological filter and anaerobism BAF; Nitration reaction and anti-nitration reaction be placed on respectively in two different reaction tanks carry out,, make two reaction process be able to efficiently carry out through load and the dissolved oxygen of controlling two reaction tanks; Both reduce hydraulic detention time and corresponding capital cost, helped the removal of total nitrogen again.
Embodiment two: what this embodiment and embodiment one were different is: the degree of depth of said aerobic aeration biological filter 4 is 2.5m; The iron haydite that is coated with of filling highly is 1.2m with ordinary ceramsite 3; Wherein being coated with iron haydite particle diameter is 5mm ~ 8mm; The ordinary ceramsite particle diameter is 6mm ~ 8mm, and be coated with the iron haydite and be (1.5 ~ 2.5) with ordinary ceramsite ammonium volume ratio: 1 mixes; The degree of depth of said anaerobism BAF 6 is 2.5m, and the biology of filling promotion property haydite 5 highly is 1m, and biological promotion property haydite 5 particle diameters are 5mm ~ 8mm.Other structure is identical with embodiment one with annexation.
Embodiment three: this embodiment is the employed sewage water treatment methods of embodiment two described employing aerobic-anaerobic combination aerating biological filter sewage processing systems; Adopt that the sewage water treatment method of aerobic-anaerobic combination BAF is achieved in that one, sewage is taken into account valve module 4-1 by sewage intake pump 1 through first flow and got in the aerobic aeration biological filter 4; Take into account valve module 6-1 through second flow simultaneously and get in the anaerobism BAF 6, the water outlet of aerobic aeration biological filter 4 is taken into account valve module 6-1 through second flow and is got in the anaerobism BAF 6; Two, a part of water outlet of anaerobism BAF 6 is discharged in the environment, and another part water outlet is taken into account in the valve module 6-1 entering anaerobism BAF 6 through the reflux pump 7 and second flow; Three, air pump 2 carries out aeration to aerobic aeration biological filter 4 and anaerobism BAF 6 respectively, and the air water volume ratio is lower than air water volume ratio when aerobic aeration biological filter 4 carried out aeration when wherein anaerobism BAF 6 being carried out aeration.
Used sewage water treatment method among the present invention; Nitration reaction and anti-nitration reaction be placed on respectively in two different reaction tanks carry out; Through load and the dissolved oxygen of controlling two reaction tanks; Make two reaction process be able to efficiently carry out, both reduced hydraulic detention time and corresponding capital cost, help the removal of total nitrogen again.
Embodiment four: what this embodiment and embodiment three were different is: the water outlet of said sewage intake pump 1 is (3 ~ 5) by volume: 1 ratio is taken into account valve module 4-1 through first flow respectively simultaneously and is got in the aerobic aeration biological filter 4 and take into account valve module 6-1 through second flow and get in the anaerobism BAF 6, and wherein volume ratio adopts first flow to take into account valve module 4-1 and second flow to take into account valve module 6-1 and control.Other step is identical with embodiment three with parameter.
Embodiment five: what this embodiment was different with embodiment three or four is: another part water outlet of said anaerobism BAF 6 is taken into account valve module 6-1 through reflux pump 7 and second flow, and to get into the per-cent that flow in the anaerobism BAF 6 accounts for anaerobism BAF water outlet total flux be 60% ~ 80%.Other step is identical with embodiment three or four with parameter.
Embodiment six: what this embodiment was different with embodiment three or four is: another part water outlet of said anaerobism BAF 6 is taken into account valve module 6-1 through reflux pump 7 and second flow, and to get into the per-cent that flow in the anaerobism BAF 6 accounts for anaerobism BAF water outlet total flux be 75%.Other step is identical with embodiment three or four with parameter.
Embodiment seven: what this embodiment was different with one of embodiment three to six is: said aerobic aeration biological filter 4 is (5 ~ 7) in the air water volume ratio: 1 ratio is carried out aeration, and anaerobism BAF 6 is (2 ~ 4) in the air water volume ratio: 1 ratio is carried out aeration.Other step is identical with one of embodiment three to six with parameter.
Embodiment eight: what this embodiment was different with one of embodiment three to six is: said aerobic aeration biological filter 4 is that the ratio of 6:1 is carried out aeration in the air water volume ratio, and anaerobism BAF 6 is that the ratio of 3:1 is carried out aeration in the air water volume ratio.Other step is identical with one of embodiment three to six with parameter.
Embodiment nine: what this embodiment was different with one of embodiment three to eight is: temperature remains on 18 ℃ ~ 24 ℃ scopes when work with anaerobism BAF 6 in said aerobic aeration biological filter 4, and the flow velocity of intaking in the pond when work with anaerobism BAF 6 in aerobic aeration biological filter 4 is 0.75m/h ~ 0.85m/h.Other step is identical with one of embodiment three to eight with parameter.
Embodiment ten: what this embodiment was different with one of embodiment three to eight is: temperature remains on 20 ℃ ~ 22 ℃ scopes when work with anaerobism BAF 6 in said aerobic aeration biological filter 4, and the flow velocity of intaking in the pond when work with anaerobism BAF 6 in aerobic aeration biological filter 4 is 0.8m/h.Other step is identical with one of embodiment three to eight with parameter.
In order to verify beneficial effect of the present invention, carried out following experiment:
Experiment one: the sewage water treatment method of the employing aerobic-anaerobic combination BAF among the present invention is achieved in that
One, ammonia nitrogen and the total nitrogen to pending sewage detects: ammonia nitrogen is 45.37mg/L, and total nitrogen is 52.21mg/L.
Two, sewage is taken into account in the valve module 4-1 entering aerobic aeration biological filter 4 through first flow by sewage intake pump 1; Take into account valve module 6-1 through second flow simultaneously and get in the anaerobism BAF 6, the water outlet of aerobic aeration biological filter 4 is taken into account valve module 6-1 through second flow and is got in the anaerobism BAF 6; Wherein the water outlet of sewage intake pump 1 is taken into account in the valve module 4-1 entering aerobic aeration biological filter 4 and is taken into account valve module 6-1 through second flow through first flow respectively simultaneously for the ratio of 4:1 by volume and gets in the anaerobism BAF 6; Temperature remains on 20 ℃ ~ 22 ℃ scopes when work with anaerobism BAF 6 in aerobic aeration biological filter 4, and the flow velocity of intaking in the pond when work with anaerobism BAF 6 in aerobic aeration biological filter 4 is 0.8m/h.
Three, another part water outlet of anaerobism BAF 6 is taken into account valve module 6-1 through reflux pump 7 and second flow to get into the per-cent that flow in the anaerobism BAF 6 accounts for anaerobism BAF water outlet total flux is 75%.
Four, aerobic aeration biological filter 4 is that the ratio of 6:1 is carried out aeration in the air water volume ratio, and anaerobism BAF 6 is that the ratio of 3:1 is carried out aeration in the air water volume ratio.
Through detecting, in the water outlet of aerobic aeration biological filter 4, ammonia nitrogen is 7.89mg/L, and total nitrogen is 45.14mg/L, and in the water outlet of anaerobism BAF 6, ammonia nitrogen is 8.45mg/L, and total nitrogen is 10.17mg/L.

Claims (10)

1. adopt the Sewage treatment systems of aerobic-anaerobic combination BAF, it is characterized in that it by sewage intake pump (1), air pump (2), be coated with the iron haydite and form with ordinary ceramsite (3), aerobic aeration biological filter (4), biological promotion property haydite (5), anaerobism BAF (6) and reflux pump (7); Be coated with the inside that iron haydite and ordinary ceramsite (3) and biological promotion property haydite (5) are filled in aerobic aeration biological filter (4) and anaerobism BAF (6) respectively; The water outlet of sewage intake pump (1) is communicated with the import of aerobic aeration biological filter (4) and anaerobism BAF (6) respectively; The water outlet on top, aerobic aeration biological filter (4) is communicated with anaerobism BAF (6) import; The water outlet on anaerobism BAF (6) top is communicated with the formation return-flow system through reflux pump (7) with anaerobism BAF (6) import, air pump (2) is communicated with first aerating apparatus (4-2) of aerobic aeration biological filter (4) and second aerating apparatus (6-2) of anaerobism BAF (6) respectively.
2. the Sewage treatment systems of employing aerobic-anaerobic combination BAF as claimed in claim 1; The degree of depth that it is characterized in that said aerobic aeration biological filter (4) is 2.5m; The iron haydite that is coated with of filling highly is 1.2m with ordinary ceramsite (3); Wherein being coated with iron haydite particle diameter is 5mm ~ 8mm, and the ordinary ceramsite particle diameter is 6mm ~ 8mm, and be coated with the iron haydite and be (1.5 ~ 2.5) by volume with ordinary ceramsite: 1 mixes; The degree of depth of said anaerobism BAF (6) is 2.5m, and the biology of filling promotion property haydite (5) highly is 1m, and biological promotion property haydite (5) particle diameter is 5mm ~ 8mm.
3. the employed sewage water treatment method of Sewage treatment systems of employing aerobic-anaerobic combination BAF as claimed in claim 1; It is characterized in that it is achieved in that one, sewage is taken into account valve module (4-1) by sewage intake pump (1) through first flow and got in the aerobic aeration biological filter (4); Take into account valve module (6-1) through second flow simultaneously and get in the anaerobism BAF (6), the water outlet of aerobic aeration biological filter (4) is taken into account valve module (6-1) through second flow and is got in the anaerobism BAF (6); Two, a part of water outlet of anaerobism BAF (6) is discharged in the environment, and another part water outlet is taken into account in valve module (6-1) the entering anaerobism BAF (6) through the reflux pump (7) and second flow; Three, air pump (2) carries out aeration to aerobic aeration biological filter (4) and anaerobism BAF (6) respectively, and the air water volume ratio is lower than air water volume ratio when aerobic aeration biological filter (4) carried out aeration when wherein anaerobism BAF (6) being carried out aeration.
4. the sewage water treatment method of employing aerobic-anaerobic combination BAF as claimed in claim 3; The water outlet that it is characterized in that said sewage intake pump (1) is (3 ~ 5) by volume: 1 ratio is taken into account valve module (4-1) through first flow respectively simultaneously and is got into aerobic aeration biological filter (4) neutralization and take into account valve module (6-1) through second flow and get in the anaerobism BAF (6), and wherein volume ratio adopts first flow to take into account valve module (4-1) and second flow to take into account valve module (6-1) and control.
5. like the sewage water treatment method of claim 3 or 4 described employing aerobic-anaerobics combination BAFs, it is 60% ~ 80% that another part water outlet that it is characterized in that said anaerobism BAF (6) is taken into account the per-cent that flow in valve module (6-1) the entering anaerobism BAF (6) accounts for anaerobism BAF water outlet total flux through the reflux pump (7) and second flow.
6. like the sewage water treatment method of claim 3 or 4 described employing aerobic-anaerobics combination BAFs, it is 75% that another part water outlet that it is characterized in that said anaerobism BAF (6) is taken into account the per-cent that flow in valve module (6-1) the entering anaerobism BAF (6) accounts for anaerobism BAF water outlet total flux through the reflux pump (7) and second flow.
7. the sewage water treatment method of employing aerobic-anaerobic combination BAF as claimed in claim 5; It is characterized in that said aerobic aeration biological filter (4) is (5 ~ 7) in the air water volume ratio: 1 ratio is carried out aeration, and anaerobism BAF (6) is (2 ~ 4) in the air water volume ratio: 1 ratio is carried out aeration.
8. the sewage water treatment method of employing aerobic-anaerobic combination BAF as claimed in claim 5; It is characterized in that said aerobic aeration biological filter (4) is that the ratio of 6:1 is carried out aeration in the air water volume ratio, anaerobism BAF (6) is that the ratio of 3:1 is carried out aeration in the air water volume ratio.
9. the sewage water treatment method of employing aerobic-anaerobic combination BAF as claimed in claim 7; Temperature remains on 18 ℃ ~ 24 ℃ scopes when it is characterized in that the work of said aerobic aeration biological filter (4) and anaerobism BAF (6), and the flow velocity of intaking in the pond during work of aerobic aeration biological filter (4) and anaerobism BAF (6) is 0.75m/h ~ 0.85m/h.
10. the sewage water treatment method of employing aerobic-anaerobic combination BAF as claimed in claim 7; Temperature remains on 20 ℃ ~ 22 ℃ scopes when it is characterized in that the work of said aerobic aeration biological filter (4) and anaerobism BAF (6), and the flow velocity of intaking in the pond during work of aerobic aeration biological filter (4) and anaerobism BAF (6) is 0.8m/h.
CN2012102077028A 2012-06-21 2012-06-21 Sewage treatment system and method adopting aerobic-anaerobic combined aerated biological filter tank Pending CN102689987A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103880182A (en) * 2014-03-21 2014-06-25 安徽华骐环保科技股份有限公司 Aerobic nitration biofilter-anoxic denitrification biofilter denitrification system
CN106315980A (en) * 2016-09-22 2017-01-11 同济大学 System for deep treatment of secondary effluent of domestic sewage

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WO2002100785A1 (en) * 2001-06-13 2002-12-19 Trustees Of The University Of Pennsylvania Methods and apparatus for biological treatment of aqueous waste
CN102211837A (en) * 2011-03-04 2011-10-12 扬州大学 Method for treating urban sewage through water step-feed multi-stage aeration biological denitrification and biological filter

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CN103880182A (en) * 2014-03-21 2014-06-25 安徽华骐环保科技股份有限公司 Aerobic nitration biofilter-anoxic denitrification biofilter denitrification system
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CN106315980A (en) * 2016-09-22 2017-01-11 同济大学 System for deep treatment of secondary effluent of domestic sewage

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