CN103183412A - Biochemical treatment device for sewage and treatment method thereof - Google Patents

Biochemical treatment device for sewage and treatment method thereof Download PDF

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Publication number
CN103183412A
CN103183412A CN2013101053355A CN201310105335A CN103183412A CN 103183412 A CN103183412 A CN 103183412A CN 2013101053355 A CN2013101053355 A CN 2013101053355A CN 201310105335 A CN201310105335 A CN 201310105335A CN 103183412 A CN103183412 A CN 103183412A
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pool body
sewage
biochemistry pool
mud
biochemical
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CN103183412B (en
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韩寒
刘志宏
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Jiangsu green environment ecological environment Polytron Technologies Inc
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JIANGSU SHENGSHI WATER INDUSTRY DEVELOPMENT CO LTD
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Abstract

The invention relates to a biochemical treatment device for sewage, which comprises an air supply pipe, a biochemical pool body, and a water outlet and a sewage inlet both formed in the biochemical pool body; an inverted-cone-shaped separation rotational flow mud collecting pit is formed at the bottom of the biochemical pool body; a mud discharging port is formed in the mud collecting pit; a horizontal water pipe connected with the sewage inlet, as well as tangential water jetting heads, is distributed above the mud collecting pit; the sewage inlet is arranged above the horizontal water pipe and the tangential water jetting heads; at least one riser tube is vertically arranged above the biochemical pool body; the air outlet end of the air supply pipe extends into the lower part of the riser tube, and the air inlet end extends out of the biochemical pool body; the biochemical pool body is sequentially divided into an aerobiotic zone, an oxygen-poor zone, and an anaerobic zone from the top down; the water outlet is arranged at the upper part of the aerobiotic zone; a baffle is arranged in the biochemical pool body close to the water outlet; and the top of the baffle is higher than the water outlet on the pool body. The invention further relates to a treatment method adopting the treatment device. The biochemical treatment device for sewage and the treatment method thereof have the characteristics of simple technology, low cost and energy conservation.

Description

Biochemical sewage treatment device and treatment process thereof
Technical field
The invention belongs to sewage treatment area, be specifically related to a kind of biochemical sewage treatment device and treatment process thereof.
Background technology
In recent years, China's town sewage processing rate improves constantly, but the body eutrophication problem that is caused by nitrogen and phosphorus pollution not only is not resolved, and serious day by day trend is arranged.Therefore the aggravation of body eutrophication problem has proposed strict requirement to the removal of nitrogen, phosphorus, and as seen, the principal contradiction of sewage disposal has been changed into the removal of nitrogen, phosphor contaminant by the removal of organic pollutant.China to urban wastewater treatment firm to go out water quality standard more and more higher, improved the standard of nitrogen phosphorus especially, therefore many urban wastewater treatment firms of having built need upgrading, increase nitrogen, phosphor contaminant in the facility removal sewage, to reach national specified discharge standard, newly-built sewage work then must build according to new standard.For denitrification dephosphorization technique, demand for development from now on not only is confined to higher removal efficiency of nitrogen and phosphorus, and requires that treatment effect is stable, reliable, technology controlling and process is regulated flexibly, the investment working cost is saved.At present, biological denitrification phosphorous removal technique just develops towards this succinct, efficient, economic direction.
China's waste water control system in overwhelming majority area does not at present also have compartmentation or synthesization, each source of pollution is in and disperses the improvement state, traditional Continuous Flow biochemical processing process such as activated sludge process are difficult to normal steady running when handling the sewage that the water yield is less, luffing is big, therefore, efficient, the low consumption of development, the water technology that occupation of land is few are the important topics of field of waste water treatment always.Biological integrated reactor technology because of himself advantage and in recent years reaching its maturity of microbial immobilized technology be subjected to academia and get more and more and pay close attention to, and be successfully applied to the processing of various wastewater.Compare with traditional waste water treatment process, this novel reactor technology can reduce processing unit, reduces construction costs, saves running cost, reduces floor space, has caused government and scientific and technical personnel's great attention.
Vertical fragmentation integral biological treatment process research at present seldom, existing sewage biochemical processing method and device mostly are the horizontal fragmentation in the space, and topmost have traditional activated sludge process and a distortion thereof: A-O method, A-A-O method, A-B method, various oxidation ditches etc. add the second pond water outlet; The SBR method is time slice, and different effects is played in different time response ponds; The MSBR method is the branch scoring section in space and the mixing of time slice, to improve the shortcoming of time slice, last water outlet all be unable to do without second pond, namely wait for after sludge settling goes down supernatant liquor is discharged, often slow because of sludge settling speed, and making the processing power of second pond on the low side, the treatment time generally accounts for 1/2nd of the whole water treatment cycle.
Vertical fragmentation integral biological treatment process was lacked, is saved the area, reduces energy consumption, reduces cost with its sewage disposal time, guaranteed the high quality continuous effluent simultaneously and was used.
The multiple grey hair of grandson is understood a cover vertical sectional integrated waste water biochemical treatment method and corresponding device.A back taper mud sorting eddy flow collection mud pit is formed on the bottom of this device, there is mud discharging mouth at collection center, mud pit, biochemistry pool body top is provided with at least one lamination cunning and leaches well, the aeration plane makes biochemistry pool be segmented into anaerobism, aerobic, the oxygen-starved area, and form vertical internal recycle, sewage three-phase above aeration head and off the net anaerobic sludge zone of aeration tube rise to flows aerobic elevated areas and carries out aerobic aeration, stop that through annular the quiet pool of settling out of two-phase flow of the skirtboard of floating matter and virtual secondary sedimentation basins enters that the lamination cunning leaches well or the lamination cunning leaches mill weir again, the water outlet of artesian well central lower is discharged.
Sewage makes the inverted cone surface at the bottom of the pond play swirler carries out microcosmic to mud sorting by the tangential jetting of bottom level, the required power that horizontally rotates of sorting comes from the into function of water, in case of necessity, need add submarine mechanical and stir thruster, generally, depending merely on into the function of water, the required power that horizontally rotates of sorting is provided is not enough, need add submarine mechanical and stir thruster and can guarantee the power that horizontally rotates; The device that adopts of this technology both had been provided with secondary sedimentation basins in addition, be provided with also that annular stops the skirtboard of floating matter and at least one lamination cunning leaches well or the lamination cunning leaches mill weir etc., this apparatus cost is comparatively expensive, operational management is also comparatively complicated, has directly restricted the widespread use of vertical sectional integrated waste water biochemical treatment apparatus in sewage treatment area.
Summary of the invention
The invention reside in the biochemical sewage treatment device and the treatment process thereof that provide that a kind of technology is simple, cost is low and can energy efficient.
Concrete technical scheme of the present invention is as follows:
A kind of biochemical sewage treatment device, comprise air-supply duct, biochemistry pool body, be located at water outlet and sewage import on the biochemistry pool body, biochemistry pool body inner bottom part forms a back taper mud sorting eddy flow collection mud pit, collection center, mud pit is provided with mud discharging mouth, top, collection mud pit is distributed with horizontal water distributor and the tangential jetting head that is connected with the sewage import, described sewage import is located at the top of horizontal water distributor and tangential jetting head, the vertical direction of biochemistry pool body top is provided with at least one riser pipe, the below of riser pipe is stretched in the outlet side of air-supply duct, and it is external that its inlet end leans out biochemistry pool; The biochemistry pool body is divided into aerobic zone, oxygen-starved area, anaerobic zone from top to bottom, described water outlet is located at the top of aerobic zone, is provided with baffle plate near the water outlet place in the biochemistry pool body, baffle plate and along biochemistry pool body around extension parallel with pool wall, the top of baffle plate is higher than the water outlet of Chi Tishang.
The tube spacing of riser pipe, its height and cross-sectional sizes can be set as required among the present invention, preferably, the tube spacing of described riser pipe is 3m, and the riser pipe cross-sectional area is 1:36 with the cross-sectional area ratio of biochemistry pool body, and the aspect ratio of the height of riser pipe and biochemistry pool body is 3:8.The height of riser pipe can be selected according to the characteristics of sewage among the present invention, when the height of riser pipe is big, can insert the biochemistry pool body than the depths, and it is strong that handle the COD ability this moment, when the height of riser pipe hour, can insert the more shallow place of biochemistry pool body, handle NH this moment 4 +Ability is strong.
Described aerobic zone is provided with stuffing frame, and the height of stuffing frame accounts for 1/2 of biochemistry pool height degree.Stuffing frame is provided with filler as the aerobe carrier, and the material of described filler is polypropylene.Adopt the polypropylene material of high-quality, it is non-degradable to be immersed in waste water for a long time, also can be to the toxic effect of microorganism; Filler is located on the stuffing frame and is suspended in the water, and the change of sewage quality and the water yield is had adaptive faculty preferably; It is convenient to change, long service life.
The inlet end of described air-supply duct is connected with blower fan.
The invention still further relates to the treatment process that adopts above-mentioned biochemical sewage treatment device, comprise the steps:
(1) sewage penetrates from tangential jetting head under the effect of impulse force after the sewage import enters horizontal water distributor, drive the inverted cone surface pool bottom sludge and do the level rotary flow motion, and it is concentrated to collection center, mud pit, it is fast that the new raw sludge of heavy aged mud is concentrated, to realize the microcosmic sorting discharging to mud;
(2) the biochemistry pool body is segmented into aerobic zone, oxygen-starved area, anaerobic zone from top to bottom, and sewage rises to the oxygen-starved area from anaerobic zone, is entered by the oxygen-starved area and mixes the back with the pressurized air of air-supply duct outlet side behind the aerobic zone and up flow along riser pipe;
(3) a part of water that comes out from the riser pipe top refluxes, carry out vertical circulation at aerobic zone, part water is at the bottom of the mud in the sewage is slipped to the pond along pool wall through baffle plate stops after, and clear water slowly rises behind the virtual settling tank of pool wall and baffle plate formation from the water outlet outflow on body top, pond along pool wall.
The air demand of above-mentioned air-supply duct is preferably 41-42m 3/ hour.
The present invention makes the inverted cone surface at the bottom of the pond play swirler carries out microcosmic to mud sorting by bottom level water distributor and tangential jetting head horizontal tangential jetting in pending sewage, the present invention is arranged to be higher than horizontal water distributor and tangential jetting head with the sewage import, utilize the shock action of sewage that water is penetrated from tangential jetting head, provide the enough power that horizontally rotates not needing submarine mechanical to stir under the angle of rake situation sorting of carrying out microcosmic for mud, the sewage that enters is fully mixed with mud, prevent sludge settling, save the energy, reduced cost.
The present invention adopts to riser pipe and feeds the aeration mode that pressurized air replaces traditional aeration plane, pressurized air is incorporated in the riser pipe, because aeriferous water proportion is less, impel sewage up to flow along riser pipe with gas, airborne oxygen is transferred in the sewage simultaneously.Water (flow) direction outside the riser pipe utilizes the vertical circulation of water that heavy-oxygen-enriched water is delivered under water vertically downward.At water in dirty, the active sludge respiration consumption oxygen in the filler, and then in the biochemistry pool body, form the oxygen concentration gradient that oxygen concn reduces gradually, in a certain degree of depth, oxygen concn equals zero, this process has realized the nitrification and denitrification biochemical reaction.This kind aeration mode can reduce bubble size, increase surface-area, oxygen is strengthened greatly to the transfer efficiency in the liquid, because oxygen concn improves, strengthened the depth of penetration of oxygen in the mud floc particle, make aerobic microbiological proportion increase in the flco, sludge activity remains on the higher level, thereby purification function is good, and the Filamentous Bulking that causes owing to anoxic can not take place yet, mud pellet is more solid, and sludge concentration improves greatly; The growth of nitrifier also can not be subjected to the restriction of dissolved oxygen deficiency, is conducive to biological denitrification process, thereby reaches the purpose of strengthened denitrification.
The present invention compares with prior art, has following advantage:
(1) the present invention utilizes the vertical circulation of waste water to cooperate with filler, forms oxygen concentration gradient in the vertical direction, is conducive to biological denitrificaion, thereby reaches the purpose of strengthened denitrification; Reduce energy consumption, improve oxygen transfer efficiency;
(2) the sewage import is arranged to be higher than horizontal water distributor and tangential jetting head, utilize the shock action of sewage that water is penetrated from tangential jetting head, the sorting of carrying out microcosmic for mud provides the enough power that horizontally rotates, need not to adopt submarine mechanical to stir thruster, save the energy, reduced cost;
(3) the present invention is simple in structure, cost is low, and air-supply duct is directly stretched in the riser pipe, only need take out air-supply duct during maintenance and get final product, and need not to enter in the body of pond, and is easy to maintenance; By baffle plate is set, avoid heavy-oxygen-enriched water to the stirring of sludge settling in addition, the virtual settling tank that adopts baffle plate and pool wall to form is finished the settlement action of mud, and simple in structure, cost is low, and large-scale application in sewage treatment area suits;
(4) the present invention can handle dissimilar sewage targetedly by the height of control riser pipe; If COD concentration height in the sewage, the then degree of depth of riser pipe dark (height of riser pipe is relatively large); If NH in the sewage 4 +The concentration height, then the depth as shallow of riser pipe some (height of riser pipe is less relatively) realizes one-object-many-purposes, satisfies the requirement that different sewage is handled.
Description of drawings
Fig. 1 is structural representation of the present invention.
Wherein: 1 is water outlet, and 2 is baffle plate, and 3 is stuffing frame, and 4 is riser pipe, and 5 is air-supply duct, and 6 is blower fan, 7 is water distributor, and 8 is the jetting head, and 9 is mud discharging mouth, and 10 is the sewage import, and 11 is filler, and 12 is water inlet pipe, 13 is the biochemistry pool body, and A is aerobic zone, and B is the oxygen-starved area, and C is anaerobic zone, and D is the mud district.
Embodiment
Further specify the present invention below in conjunction with accompanying drawing.
Referring to Fig. 1, biochemical sewage treatment device of the present invention, comprise air-supply duct 5, biochemistry pool body 13, be located at water outlet 1 and sewage import 10 on the biochemistry pool body 13, biochemistry pool body 13 inner bottom parts form a back taper mud sorting eddy flow collection mud pit, this collection mud pit is mud district D, concentrate on the D district behind the sludge settling, there is mud discharging mouth 9 at collection center, mud pit, top, collection mud pit is distributed with horizontal water distributor 7 and tangential jetting head 8, horizontal water distributor 7 is connected with sewage import 10 by water inlet pipe 12 with tangential jetting head 8, and described sewage import 10 is located at the top of horizontal water distributor 7 and tangential jetting head 8.The vertical direction of biochemistry pool body 13 tops is provided with at least one riser pipe 4, and the below of riser pipe 4 is stretched in the outlet side of air-supply duct 5, and its inlet end leans out outside the biochemistry pool body 13 and is connected with blower fan 6; Biochemistry pool body 13 is divided into aerobic zone A, oxygen-starved area B, anaerobic zone C from top to bottom, described water outlet 1 is located at the top of aerobic zone A and a little more than the upper end of riser pipe, be provided with baffle plate 2 near water outlet 1 place in the biochemistry pool body 13, baffle plate 2 is connected with biochemistry pool body 13 by support, because this kind mode of connection is existing, so be not described in detail, baffle plate 2 is parallel with pool wall and extend around biochemistry pool body 13, and the top of baffle plate 2 is higher than the water outlet 1 on the biochemistry pool body 13.
The tube spacing of riser pipe, its height and cross-sectional sizes can be set as required among the present invention, preferably, the tube spacing of described riser pipe is 3m, and the riser pipe cross-sectional area is 1:36 with the cross-sectional area ratio of biochemistry pool body, and the aspect ratio of the height of riser pipe and biochemistry pool body is 3:8.
Described aerobic zone A is provided with stuffing frame 3, and the height of stuffing frame accounts for 1/2 of biochemistry pool height degree.Be distributed with filler on the stuffing frame, this filler is existing filler, and its material can be polypropylene.
Adopt the treatment process of above-mentioned biochemical sewage treatment device, comprise the steps:
(1) sewage penetrates from tangential jetting head under the effect of impulse force after the sewage import enters horizontal water distributor, drive the inverted cone surface pool bottom sludge and do the level rotary flow motion, and it is concentrated to collection center, mud pit, it is fast that the new raw sludge of heavy aged mud is concentrated, to realize the microcosmic sorting discharging to mud;
(2) the biochemistry pool body is segmented into aerobic zone, oxygen-starved area, anaerobic zone from top to bottom, and sewage rises to the oxygen-starved area from anaerobic zone, is entered by the oxygen-starved area and mixes the back with the pressurized air of air-supply duct outlet side behind the aerobic zone and up flow along riser pipe;
(3) a part of water that comes out from the riser pipe top refluxes, carry out vertical circulation at aerobic zone, part water is at the bottom of the mud in the sewage is slipped to the pond along pool wall through baffle plate stops after, and clear water slowly rises behind the virtual settling tank of pool wall and baffle plate formation from the water outlet outflow on body top, pond along pool wall.
The air demand of above-mentioned air-supply duct is preferably 41-42m 3/ hour.
Embodiment
Biochemistry pool body 13 is tubular, and its diameter is 3m, highly is 8m; The vertical direction at the center of biochemistry pool body is inserted the riser pipe that diameter is 50cm, and the height of riser pipe is 3m; The height of the stuffing frame of biochemistry pool body top is 4m, and the upper end of riser pipe is a little more than the upper end of stuffing frame; The air demand of air-supply duct is 41-42m 3/ hour; The treatment capacity that the biochemistry pool body is disposed of sewage is 10 m 3/ hour.COD 200mg/L from the sewage that the sewage import enters, NH 4 +20mg/L; After biochemical sewage treatment device of the present invention is handled, COD 60mg/L from the water that water outlet flows out, NH 4 +8mg/L reaches discharging standards.

Claims (6)

1. biochemical sewage treatment device, comprise air-supply duct, biochemistry pool body, be located at water outlet and sewage import on the biochemistry pool body, biochemistry pool body inner bottom part forms a back taper mud sorting eddy flow collection mud pit, collection center, mud pit is provided with mud discharging mouth, top, collection mud pit is distributed with horizontal water distributor and the tangential jetting head that is connected with the sewage import
It is characterized in that described sewage import is located at the top of horizontal water distributor and tangential jetting head, the vertical direction of biochemistry pool body top is provided with at least one riser pipe, and the below of riser pipe is stretched in the outlet side of air-supply duct, and it is external that its inlet end leans out biochemistry pool;
The biochemistry pool body is divided into aerobic zone, oxygen-starved area, anaerobic zone from top to bottom, described water outlet is located at the top of aerobic zone, is provided with baffle plate near the water outlet place in the biochemistry pool body, baffle plate and along biochemistry pool body around extension parallel with pool wall, the top of baffle plate is higher than the water outlet of Chi Tishang.
2. biochemical sewage treatment device according to claim 1, the tube spacing that it is characterized in that described riser pipe is 3m, and the cross-sectional area of riser pipe cross-sectional area and biochemistry pool body is than being 1:36, and the aspect ratio of the height of riser pipe and biochemistry pool body is 3:8.
3. biochemical sewage treatment device according to claim 1 and 2 is characterized in that described aerobic zone is provided with stuffing frame, and the height of stuffing frame accounts for 1/2 of biochemistry pool height degree.
4. biochemical sewage treatment device according to claim 1 is characterized in that the inlet end of described air-supply duct is connected with blower fan.
5. the treatment process of the described biochemical sewage treatment device of above-mentioned arbitrary claim is characterized in that comprising the steps:
(1) sewage penetrates from tangential jetting head under the effect of impulse force after the sewage import enters horizontal water distributor, drive the inverted cone surface pool bottom sludge and do the level rotary flow motion, and it is concentrated to collection center, mud pit, it is fast that the new raw sludge of heavy aged mud is concentrated, to realize the microcosmic sorting discharging to mud;
(2) the biochemistry pool body is segmented into aerobic zone, oxygen-starved area, anaerobic zone from top to bottom, and sewage rises to the oxygen-starved area from anaerobic zone, is entered by the oxygen-starved area and mixes the back with the pressurized air of air-supply duct outlet side behind the aerobic zone and up flow along riser pipe;
(3) a part of water that comes out from the riser pipe top refluxes, carry out vertical circulation at aerobic zone, part water is at the bottom of the mud in the sewage is slipped to the pond along pool wall through baffle plate stops after, and clear water slowly rises behind the virtual settling tank of pool wall and baffle plate formation from the water outlet outflow on body top, pond along pool wall.
6. treatment process according to claim 5, the air demand that it is characterized in that described air-supply duct is 41-42m 3/ hour.
CN201310105335.5A 2013-03-29 2013-03-29 Biochemical treatment device for sewage and treatment method thereof Active CN103183412B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104071896A (en) * 2014-07-06 2014-10-01 太原大学 Granule sludge and biological film coupled integrated sewage treatment method and treatment device suitable for same
EP3081538A4 (en) * 2013-12-10 2017-05-31 Chinese Research Academy Of Environmental Sciences Vertical sewage treatment device and method
CN111453843A (en) * 2020-04-10 2020-07-28 苏州汇博龙环保科技有限公司 Liftable oxygenate and biochemical device of anaerobism sludge digestion

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1301673A (en) * 1999-12-29 2001-07-04 孙复华 Vertical sectional integrated waste water biochemical treatment method and device
CN203238094U (en) * 2013-03-29 2013-10-16 江苏盛世水业发展有限公司 Sewage biochemical treatment device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1301673A (en) * 1999-12-29 2001-07-04 孙复华 Vertical sectional integrated waste water biochemical treatment method and device
CN203238094U (en) * 2013-03-29 2013-10-16 江苏盛世水业发展有限公司 Sewage biochemical treatment device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3081538A4 (en) * 2013-12-10 2017-05-31 Chinese Research Academy Of Environmental Sciences Vertical sewage treatment device and method
CN104071896A (en) * 2014-07-06 2014-10-01 太原大学 Granule sludge and biological film coupled integrated sewage treatment method and treatment device suitable for same
CN111453843A (en) * 2020-04-10 2020-07-28 苏州汇博龙环保科技有限公司 Liftable oxygenate and biochemical device of anaerobism sludge digestion

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