CN107364969A - The energy-saving sewage processing method and its device of a kind of high-efficient denitrification and dephosphorization - Google Patents

The energy-saving sewage processing method and its device of a kind of high-efficient denitrification and dephosphorization Download PDF

Info

Publication number
CN107364969A
CN107364969A CN201710703465.7A CN201710703465A CN107364969A CN 107364969 A CN107364969 A CN 107364969A CN 201710703465 A CN201710703465 A CN 201710703465A CN 107364969 A CN107364969 A CN 107364969A
Authority
CN
China
Prior art keywords
zone
anoxic
aerobic
sludge
dephosphorization
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.)
Pending
Application number
CN201710703465.7A
Other languages
Chinese (zh)
Inventor
陈兵
王玖林
高千峰
李海国
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guizhou Bofan Environmental Technology Co Ltd
Original Assignee
Guizhou Bofan Environmental Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Guizhou Bofan Environmental Technology Co Ltd filed Critical Guizhou Bofan Environmental Technology Co Ltd
Priority to CN201710703465.7A priority Critical patent/CN107364969A/en
Publication of CN107364969A publication Critical patent/CN107364969A/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/30Aerobic and anaerobic processes
    • C02F3/301Aerobic and anaerobic treatment in the same reactor
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/30Aerobic and anaerobic processes
    • C02F3/308Biological phosphorus removal

Abstract

The present invention discloses the energy-saving sewage processing method and its device of a kind of high-efficient denitrification and dephosphorization, this method is sets up anoxic zone II behind aerobic zone in biological processing unit body, by using Vertical Dynamic caused by the aerator of aerobic zone bottom, by the mixed-liquor return in aerobic zone to anoxic zone I and anoxic zone II, mixed-liquor return is realized;Whole biological processing unit body after setting up is built jointly with settling zone, makes settling zone and anoxic zone II lower ends UNICOM, and sludge pump is arranged to anoxic zone II bottom, is acted on by anoxic zone II heterotrophic denitrifying Bacteria by the NO of nitrate in sludge3Or NO2It is converted into N2So as to reduce the content of nitrate in the sludge for be back to anaerobic zone, phosphor-removing effect is improved, the present invention can save in the link of denitrogenation, can reduce the running cost of equipment, reduce floor space, save entreprise cost, can also efficient dephosphorization, meet simultaneously denitrogenation dephosphorizing effect.

Description

The energy-saving sewage processing method and its device of a kind of high-efficient denitrification and dephosphorization
Technical field
The present invention relates to the energy-saving sewage processing method and its device of a kind of high-efficient denitrification and dephosphorization, belong to sewage water denitrification dephosphorization Technical field of tools.
Background technology
Water resource, the shortage of the energy and the deterioration of quality of water environment have become the bottleneck of socio-economic development, improve Wastewater treatment rate and degree for the treatment of, strengthen the denitrogenation dephosphorizing efficiency of sewage treatment plant, reduce sewage disposal energy consumption as when business It is anxious.
Prior art, anaerobic-anoxic-aerobic process therefore are more used with the function of denitrogenation dephosphorizing by sewage disposal The favor at family, wherein, the general principle of nitration denitrification biology ammonia nitrogen removal is:Under aerobic condition, NH3Acted in Autotrophic nitrification bacterium Under be converted into NO3- or NO2-, then anaerobism under anoxia condition, NO3- or NO2- be converted under heterotrophic denitrifying Bacteria effect N2, and it is discharged into air;And dephosphorization is required in anaerobism and containing NO3- nitrate it is as far as possible few in the case of carry out;Traditional is de- Nitrogen dephosphorization apparatus is followed successively by from left to right:Anaerobic zone, anoxic zone, aerobic zone are finally to filter settling zone, its concrete technology flow process For:Sewage is introduced into anaerobic zone, enters back into anoxic zone and finally just enters aerobic zone, denitrogenation is then after Aerobic Process for Treatment, is passed through Mixed-liquor return is carried out denitrification denitrogenation into anoxic zone by reflux pump, and dephosphorization is then to precipitate filtering in settling zone is filtered Sludge afterwards is back to anaerobic zone by sludge pump, is handled, and conventional device configuration figure is as shown in Figure 2;
By the related work experience of the condition of above-mentioned denitrogenation dephosphorizing, specific technique and applicant for many years, it is applicant's understanding that existing There are technology Shortcomings, be in particular in:First, in denitrification process, it is necessary to by reflux pump by mixed-liquor return to anoxic zone, More consuming energy, while also increase the running cost of equipment;Second, it may know that by the requirement of dephosphorization, pass through sludge blowback The sludge requirement of stream is as far as possible few containing nitrate, because NO therein3- can suppress to disturb dephosphorization, and prior art is in space Layout, and running status, the sludge directly to be come by aerobic zone discharge, necessarily containing more nitrate, this will certainly do to press down System releases the growth of phosphorus bacterium, so as to be unable to reach efficient dephosphorization function, that is, does not reach while preferably removes N, P effect, its Three, each section of existing equipment is separate, and floor space is big.
I.e.:A kind of method and device is needed, can be saved in the link of denitrogenation, the running cost of equipment can be reduced, reduced Floor space, save entreprise cost, moreover it is possible to efficient dephosphorization, meet the effect of high-efficient denitrification and dephosphorization simultaneously.
The content of the invention
The technical problem to be solved in the present invention is to provide the energy-saving sewage processing method and its dress of a kind of high-efficient denitrification and dephosphorization Put, can be saved in the link of denitrogenation, the running cost of equipment can be reduced, floor space is reduced, save entreprise cost, moreover it is possible to be high The dephosphorization of effect, meet the effect of denitrogenation dephosphorizing simultaneously, can be with overcome the deficiencies in the prior art.
The technical scheme is that:The energy-saving sewage processing method and its device of a kind of high-efficient denitrification and dephosphorization, it includes The biological processing unit body being made up of anaerobic zone, anoxic zone I, aerobic zone, this method are aerobic in biological processing unit body Anoxic zone II is set up behind area, by using Vertical Dynamic caused by the aerator of aerobic zone bottom, by the mixing in aerobic zone Liquid is back to anoxic zone I and anoxic zone II, realizes mixed-liquor return;Whole biological processing unit body and settling zone after setting up Build jointly, make settling zone and anoxic zone II lower ends UNICOM, and sludge pump is arranged to anoxic zone II bottom, pass through anoxic zone II's Heterotrophic denitrifying Bacteria is acted on the NO of nitrate in sludge3- or NO2- it is converted into N2, so as to reduce the sludge for being back to anaerobic zone The content of middle nitrate, improve phosphor-removing effect.
The above-mentioned sludge for being back to anaerobic zone is the 50% of sludge total amount.
The structure of the sewage-treatment plant of the energy-conservation includes biological processing unit body, in the left and right two of biological processing unit body End is respectively equipped with water inlet and discharge outlet, and biological processing unit body is provided with the anaerobism of UNICOM by dividing plate from left to right in it Area, anoxic zone I and aerobic zone, aerator is provided with aerobic zone bottom, anoxic zone II is provided with behind aerobic zone, in anoxic zone II Settling zone is provided with afterwards, and the dividing plate bottom between anoxic zone I and aerobic zone, aerobic zone and anoxic zone II is equipped with water hole, is lacking Oxygen area II bottoms are provided with and the sludge pump of sludge reflux to anaerobic zone, anoxic zone II are connected with settling zone bottom.
Divider height between above-mentioned anoxic zone I and aerobic zone, aerobic zone and anoxic zone II is less than anoxic zone II and precipitation The dividing plate in section.
Foregoing is provided with inclined baffle plate in the lower end of settling zone.
Prior art compares, the energy-saving sewage processing method and its device of high-efficient denitrification and dephosphorization of the present invention, such method And device can utilize Vertical Dynamic caused by aerator, realize mixed-liquor return, instead of original in the link of denitrogenation The mode with reflux pump of technology, so utilize in device existing aerator to combine and improve, can more save, can reduce and set Standby running cost, save entreprise cost;By the NO in nitrate under being acted on by the heterotrophic denitrifying Bacteria of anoxic zone3- or NO2- It is converted into N2, so as to reduce the content of nitrate in the sludge for be back to anaerobic zone, improve phosphor-removing effect;Applicant is by multiple Experiment show that processing sanitary sewage effluent quality is better than《Urban wastewater treatment firm pollutant emission standard》(GB18918-2002) One-level B standard, especially Nitrogen/Phosphorus Removal are stable;In cost, the technique of relatively conventional anaerobic-anoxic-aerobic process, it is built Be set as originally can saving 200-500 members/(m3/d), operating cost can save 0.015-0.030 members/m3;It is back to the sludge of anaerobic zone For the 50% of sludge total amount, such return sludge ratio can have more preferable phosphor-removing effect;The present apparatus is provided with anoxic zone behind aerobic zone II, settling zone is provided with after the II of anoxic zone, the dividing plate bottom between anoxic zone I and aerobic zone, aerobic zone and anoxic zone II is all provided with There is water hole, thus the mixed liquor of Aerobic Pond can be overflowed across into dividing plate by using Vertical Dynamic caused by aerator enters In the anoxic pond of both sides, so as to facilitating mixed liquor to carry out denitrification denitrogenation in anoxic pond, and water hole can guarantee that mixed liquor Circulation, improve the effect of denitrogenation;Be provided with anoxic zone II bottoms by the sludge pump of sludge reflux to anaerobic zone, anoxic zone II with Settling zone bottom is connected, the advantages of such structure:Sunk first, the installation site of sludge pump is more traditional installed in independent In the area of shallow lake, there is the characteristics of easy for installation;Second, and the most important, i.e.,:Anoxic zone II is connected with settling zone bottom It is logical, so can be by sludge accumulation in the bottom of anoxic zone II and settling zone, so under anoxic zone II anoxia condition, heterotrophism is anti- Nitrifier is by the NO of the nitrate in sludge3- or NO2- it is converted into N2, so as to reduce nitrate in the sludge for be back to anaerobic zone Content, reduce nitrate concentration in favor of releasing the growth of phosphorus bacterium in anaerobic zone, be advantageous to improve dephosphorization;Anoxic zone I with it is aerobic Divider height between area, aerobic zone and anoxic zone II is so utilizing aeration dress less than anoxic zone II and the dividing plate for precipitating section Put when the mixed liquor in aerobic zone is flowed back, prevent mixed liquor from entering settling zone in the presence of the Vertical Dynamic of aeration; Inclined baffle plate is provided with the lower end of settling zone, is so advantageous to sludge to anoxic zone II congregate, is convenient to sludge Backflow and discharge.
Brief description of the drawings
Fig. 1 is the attachment structure schematic diagram of the present invention.
Fig. 2 is the attachment structure schematic diagram of traditional wastewater controlling device.
Wherein, biological processing unit body 1;Water inlet 2;Discharge outlet 3;Anaerobic zone 4;Anoxic zone I5;Aerobic zone 6;Aeration dress Put 7;Anoxic zone II8;Settling zone 9;Water hole 10;Sludge pump 11.
Embodiment
Embodiment 1. as shown in figure 1, a kind of energy-saving sewage processing method of high-efficient denitrification and dephosphorization, it include by anaerobic zone 4, The biological processing unit body 1 that anoxic zone I5, aerobic zone 6 form, after this method is the aerobic zone 6 in biological processing unit body 1 Anoxic zone II8 is set up, by using Vertical Dynamic caused by the aerator 7 of the bottom of aerobic zone 6, by the mixing in aerobic zone 6 Liquid is back to anoxic zone I5 and anoxic zone II8, realizes mixed-liquor return;Whole biological processing unit body 1 after setting up is with sinking Shallow lake area 9 is built jointly, makes settling zone 9 and anoxic zone II8 lower ends UNICOM, and sludge pump 12 is arranged to anoxic zone II8 bottom, is passed through Anoxic zone II8 heterotrophic denitrifying Bacteria acts on is converted into N2 by the NO3- of nitrate in sludge or NO2-, is back to so as to reduce The content of nitrate in the sludge of anaerobic zone 4, phosphor-removing effect is improved, the described sludge for being back to anaerobic zone 4 is sludge total amount 50%, arrange in addition outside 50% sludge.
The structure of the energy-saving sewage treating device of the high-efficient denitrification and dephosphorization includes biological processing unit body 1, in biological treatment The left and right ends of cell cube 1 are respectively equipped with water inlet 2 and discharge outlet 3, biological processing unit body 1 by dividing plate in it by it is left extremely The right side is provided with anaerobic zone 4, anoxic zone I5 and the aerobic zone 6 of UNICOM, aerator 7 is provided with the bottom of aerobic zone 6, behind aerobic zone 6 Provided with anoxic zone II8, settling zone 9 is provided with after the II8 of anoxic zone, between anoxic zone I5 and aerobic zone 6, aerobic zone 6 and anoxic zone II8 Divider height less than dividing plate between anoxic zone II8 and settling zone 9, I5 and aerobic zone 6, aerobic zone 6 and anoxic zone in anoxic zone Dividing plate bottom between II8 is provided with equal water hole 10, and the sludge pump by sludge reflux to anaerobic zone 4 is provided with anoxic zone II8 bottoms 11, anoxic zone II8 are connected with the bottom of settling zone 9, and inclined baffle plate is provided with the lower end of settling zone 9.
When in use, sewage constantly enters anaerobic zone 4 from water inlet 2, the sludge to be flowed back in anaerobic zone 4 with sludge pump 11 Dephosphorization is mixed, anoxic zone I5 is entered back into and enters aerobic zone 6 from water hole 10, in the presence of the aerator 7 of aerobic zone 6, Mixed liquor overflows across dividing plate and entered in anoxic zone I5 and anoxic zone II8, while under the continuous aeration of aerator 7, mixed liquor is not Break and constantly circulated in aerobic zone 6 between anoxic zone I5 and anoxic zone II8, be advantageous to improve denitrification effect;Meanwhile because constantly enter Water, water level overflow across, and during dividing plate between anoxic zone II8 and settling zone 9, can carry out sludge settling and by the draining of discharge outlet 3, sink The sludge in shallow lake is under inclined baffle effect, easily in anoxic zone II8 congregates, such sludge under anoxic conditions, heterotrophism Denitrifying bacterium is by the NO of the nitrate in sludge3- or NO2- it is converted into N2, nitric acid in the sludge of anaerobic zone 4 is back to so as to reduce The content of salt, nitrate concentration is reduced in favor of releasing the growth of phosphorus bacterium in anaerobic zone 4, be advantageous to improve dephosphorization, during this, According to the size of each area's volume, residence time of the mixed liquor in anaerobic zone 4, anoxic zone I5, aerobic zone 6h and anoxic zone II8 Respectively 1h, 2h, 8h, 1h;Such method and device applicant draws by test of many times, handles sanitary sewage effluent quality It is better than《Urban wastewater treatment firm pollutant emission standard》(GB18918-2002)One-level B standard, especially Nitrogen/Phosphorus Removal It is stable;In cost, the technique of relatively conventional anaerobic-anoxic-aerobic process, its construction cost can save 200-500 member/(m3/ d), operating cost can save 0.015-0.030 members/m3

Claims (5)

1. a kind of energy-saving sewage processing method of high-efficient denitrification and dephosphorization, it includes being made up of anaerobic zone, anoxic zone I, aerobic zone Biological processing unit body, it is characterised in that:This method is sets up anoxic zone II behind the aerobic zone in biological processing unit body, profit The Vertical Dynamic caused by the aerator of aerobic zone bottom, by the mixed-liquor return in aerobic zone to anoxic zone I and anoxic zone II, realize mixed-liquor return;Whole biological processing unit body after setting up is built jointly with settling zone, makes settling zone and anoxic zone II Lower end UNICOM, and sludge pump is arranged to anoxic zone II bottom, by anoxic zone II heterotrophic denitrifying Bacteria effect by sludge The NO of middle nitrate3- or NO2- it is converted into N2, so as to reduce the content of nitrate in the sludge for be back to anaerobic zone, improve dephosphorization Effect.
2. the energy-saving sewage processing method of high-efficient denitrification and dephosphorization according to claim 1, it is characterised in that:It is back to anaerobism The sludge in area is the 50% of sludge total amount.
3. a kind of energy-saving sewage treating device of high-efficient denitrification and dephosphorization, it includes biological processing unit body(1), in biological treatment list First body(1)Left and right ends be respectively equipped with water inlet(2)And discharge outlet(3), biological processing unit body(1)By dividing plate in it The anaerobic zone of UNICOM is provided with from left to right(4), anoxic zone I(5)And aerobic zone(6), in aerobic zone(6)Bottom is provided with aerator (7), it is characterised in that:In aerobic zone(6)Anoxic zone II is provided with afterwards(8), in anoxic zone II(8)Settling zone is provided with afterwards(9), lacking Oxygen area I(5)With aerobic zone(6), aerobic zone(6)With anoxic zone II(8)Between dividing plate bottom be equipped with water hole(10), in anoxic Area II(8)Bottom is provided with sludge reflux to anaerobic zone(4)Sludge pump(11), anoxic zone II(8)With settling zone(9)Bottom phase UNICOM.
4. the energy-saving sewage treating device of high-efficient denitrification and dephosphorization according to claim 3, it is characterised in that:Anoxic zone I(5) With aerobic zone(6), aerobic zone(6)With anoxic zone II(8)Between divider height be less than anoxic zone II(8)With settling zone(9)Between Dividing plate.
5. the energy-saving sewage treating device of high-efficient denitrification and dephosphorization according to claim 3, it is characterised in that:In settling zone (9)Lower end be provided with inclined baffle plate.
CN201710703465.7A 2017-08-16 2017-08-16 The energy-saving sewage processing method and its device of a kind of high-efficient denitrification and dephosphorization Pending CN107364969A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710703465.7A CN107364969A (en) 2017-08-16 2017-08-16 The energy-saving sewage processing method and its device of a kind of high-efficient denitrification and dephosphorization

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710703465.7A CN107364969A (en) 2017-08-16 2017-08-16 The energy-saving sewage processing method and its device of a kind of high-efficient denitrification and dephosphorization

Publications (1)

Publication Number Publication Date
CN107364969A true CN107364969A (en) 2017-11-21

Family

ID=60308985

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710703465.7A Pending CN107364969A (en) 2017-08-16 2017-08-16 The energy-saving sewage processing method and its device of a kind of high-efficient denitrification and dephosphorization

Country Status (1)

Country Link
CN (1) CN107364969A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109052647A (en) * 2018-08-23 2018-12-21 浙江开创环保科技股份有限公司 A kind of polymorphic denitrification and dephosphorization equipment of integration and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109052647A (en) * 2018-08-23 2018-12-21 浙江开创环保科技股份有限公司 A kind of polymorphic denitrification and dephosphorization equipment of integration and method
CN109052647B (en) * 2018-08-23 2021-07-13 浙江开创环保科技股份有限公司 Integrated multi-state nitrogen and phosphorus removal equipment and method

Similar Documents

Publication Publication Date Title
US20030024875A1 (en) Bioreactor for treating wastewater
CN102627353A (en) Nitration denitrificatoin and filter method and nitration denitrification and filter device for double-sludge series-connection aeration biofilter
CN108928922A (en) One kind is unpowered interior circulation biochemical reaction precipitator tower and its workflow
CN102583743B (en) Dual-sludge denitrification dephosphorizing and denitrifying A/A-O device and method
CN102259980B (en) Biological aerated filter and sewage treatment process thereof
CN101857345A (en) Aeration biological filter pool device and process for efficiently denitrifying and dephosphorizing
CN201713417U (en) Aeration biological filter pool device for efficiently denitrifying and dephosphorizing
CN201517061U (en) Sewage treatment system
CN107364969A (en) The energy-saving sewage processing method and its device of a kind of high-efficient denitrification and dephosphorization
CN102115296A (en) Novel multi-cell denitrifying membrane bioreactor
CN108046518A (en) A kind of apparatus and method of the intensified denitrification and dephosphorization of low-carbon-source sewage
CN205999129U (en) Integral domestic sewage treatment device
CN102786138B (en) Sectionalized sewage treatment tank using cyclic activated sludge system
CN205347124U (en) City river drain sewage treatment device
CN205258127U (en) Circulatory flow loop type multistage sludge -biofilm intergrowth combined type bioreactor
CN204661495U (en) A/O waste water processes equipment
CN207108604U (en) A kind of energy-saving sewage treating device of high-efficient denitrification and dephosphorization
CN109354188B (en) Device and method for treating sewage by synchronous nitrification and denitrification biomembrane method
CN110590077A (en) Compact MBBR and super-efficient separation coupled deep nitrogen and phosphorus removal treatment system
CN203295322U (en) Nitrogen and phosphorus removal water-treatment device
CN206940554U (en) A kind of MSBR denitrification dephosphorization systems based on MBBR
CN206033507U (en) Aeration sewage treatment system is switched in integration
CN109485153A (en) A kind of biofilm reactor and method of wastewater efficient denitrogenation
CN105084637B (en) A kind of baffling denitrification dephosphorization and COD degradation integrating device
CN103183454A (en) Coupling type biological denitrification method and system thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination