CN105060488A - Sewage deep treatment method by using oxygenation filter system - Google Patents
Sewage deep treatment method by using oxygenation filter system Download PDFInfo
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- CN105060488A CN105060488A CN201510566087.3A CN201510566087A CN105060488A CN 105060488 A CN105060488 A CN 105060488A CN 201510566087 A CN201510566087 A CN 201510566087A CN 105060488 A CN105060488 A CN 105060488A
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Abstract
The invention discloses a sewage deep treatment method by using an oxygenation filter system. The method is implemented by establishing an oxygenation filter system, wherein the oxygenation filter system comprises a sewage deep treatment tank in which a filter layer is arranged. Domestic sewage is sufficiently oxygenated through an oxygenation device, and sent into the sewage deep treatment tank through a water inlet pump; the sewage flowing out of a water distributor passes through the filter layer from bottom to top; a porous sintered ceramic granule filter material with developed pore structure can provide an attachment space for microbial films; the growth of the microbial films can enhance the removal effect on COD (chemical oxygen demand) and ammonia nitrogen in the sewage; as the water flow ascends, the dissolved oxygen content in the sewage gradually decreases, and an anoxic layer is formed on the upper part of the filter layer, thereby implementing the denitrification action and lowering the total nitrogen content in water; and since the filter layer has favorable adsorption and entrapment actions, the (suspended sediment) SS content in the sewage is lowered. The oxygenation filter system is small in occupied area and simple to operate, does not need to clean the filter layer after shutdown, and provides favorable conditions for removing COD, ammonia nitrogen and TN (total nitrogen).
Description
Technical field
The present invention relates to sewage water treatment method, particularly a kind of method utilizing oxygenation filtering system to carry out advanced treatment of wastewater.
Background technology
Along with China's urbanization and industrialized progress faster, urban wastewater treatment firm is collected and has been processed most city domestic sewage, and the water displacement growth of this part is relatively swifter and more violent, and this poses a big pressure to the environment of a given area.If still according to the emission request design operation urban wastewater treatment firm of " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) one-level B standard, nitrogen wherein, phosphorus etc. accumulate over a long period in water body, will cause eutrophication to water body.
Realizing mainly through single or combination physics, chemistry, physical chemistry and biological method of advanced treatment of wastewater.
At present, the method for the treatment of of domestic sewage advanced is generally coagulation, precipitation, filtration, sterilization, if having higher requirement can select the methods such as charcoal absorption, ion-exchange, reverse osmosis to water quality.The water outlet of filter tank to second-level settling pond processes at a slow speed, and it has good removal effect to turbidity, COD, colourity; Flocculation sediment-V-type filter tank can the sanitary sewage of advanced treatment low-carbon-source.Meanwhile, there are some researches show that the advanced treatment that also can realize sewage is combined in micro-filtration, nanofiltration, ultrafiltration, reverse osmosis.The advanced treatment of sanitary sewage also can use biological method and membrane processing method to realize, such as MBR, BAF, MBBR, biological diafiltration, artificial swamp etc.But these method Shortcomings, are mainly manifested in:
1. Chemical deep facture needs to add chemical agent, and chemical agent not only increases running cost, also may impact natural water;
2. the film of film depth logos needs to change, and replacement cost is higher, and meanwhile, the scavenging solution of film easily causes secondary pollution;
3. the floor space of filter tank and artificial swamp is comparatively large at a slow speed, is not suitable for the advanced treatment of wastewater in the area of some land used anxieties;
4.BAF etc. need some to shut down the processing mode of back flushing, easily impact operating performance, and have certain technical requirements to staff.
Summary of the invention
The object of this invention is to provide a kind of method utilizing oxygenation filtering system to carry out advanced treatment of wastewater.
Concrete steps are:
(1) set up an oxygenation filtering system, comprise advanced treatment of wastewater pond, be provided with in the bottom in advanced treatment of wastewater pond and lead abrasive cone; Lead above abrasive cone and be provided with water distributor, water distributor connects the thrust-augmenting nozzle at center, advanced treatment of wastewater pond; The thrust-augmenting nozzle the other end is connected with water inlet pipe; Water inlet pipe stretches out advanced treatment of wastewater pond, and water inlet pipe is provided with oxygen replenishing equipment, intake pump and vacuum breaker; Center, advanced treatment of wastewater pond is provided with sand developing tube; Sand developing tube successively through leading abrasive cone, thrust-augmenting nozzle center from bottom toward top, is provided with bottom sand developing tube and carries sand valve, top is provided with sand-washing device; Carry the sand valve the other end and connect blast main, the blast main the other end stretches out advanced treatment of wastewater pond and connects air lift; Sand-washing device spirally around sand extraction tube top, and is provided with washed-out sand rising pipe; Top, advanced treatment of wastewater pond is provided with effluent trough; Effluent trough top is provided with effluent weir, bottom is provided with rising pipe; Filtering layer is provided with in advanced treatment of wastewater pond; Advanced treatment of wastewater is provided with blow-down pipe bottom pond.
Described oxygen replenishing equipment is ejector.
Described water distributor is perforated pipe, by center to periphery by-pass line radially water distribution uniformity.
In described filtering layer, filtrate is porous sintered ceramic particle, particle diameter is 0.8 ~ 3mm, the ratio of filtering layer height and advanced treatment of wastewater pond height is 0.6 ~ 0.9:1, to guarantee that sewage has sufficient reaction compartment and standing space, and avoids the impact that filtering layer normally runs sand-washing device.
Described effluent trough around inwall top, advanced treatment of wastewater pond, and is provided with effluent weir on effluent trough top.
(2) through the sanitary sewage of biochemical treatment, first by oxygen replenishing equipment, carry out abundant oxygenation to sewage, then send into advanced treatment of wastewater pond by intake pump, vacuum breaker prevents waste water injection; Sewage flows to water distributor by the thrust-augmenting nozzle at center, advanced treatment of wastewater pond and carries out water distribution uniformity; After sewage flows out from water distributor, from lower to upper through filtering layer; Due to through oxygen replenishing equipment effect, containing higher oxygen in sewage, make to form aerobic environment in filtering layer bottom, promote the propagation of microorganism; Meanwhile, the pore texture of porous sintered ceramic granule filter material prosperity can provide attachment space for microbial film; The growth of microbial film, can improve the removal effect of COD in sewage, ammonia nitrogen; Along with current rise, the dissolved oxygen content in sewage reduces gradually, forms layer of oxygen deficient, realize denitrification on the top of filtering layer, reduces the total nitrogen content in water; Meanwhile, because filtering layer has absorption and crown_interception preferably, the SS content in sewage is reduced; Sewage eventually passes effluent weir and flows into effluent trough, and by being discharged to storage water body outside rising pipe; Filtering system of the present invention, can realize cleaning in normal advanced treatment of wastewater and filtrate carrying out simultaneously; Filtrate (porous sintered ceramic particle) bottom filtering layer is under the effect of air lift, enter sand developing tube by carrying sand valve and be thus lifted in sand-washing device, filtrate falls filtering layer upper surface after being cleaned by sand-washing device, the sewage that cleaning after stain substrate concentration is higher arrives washed-out sand rising pipe through sand-washing device water outlet, and is back to biological processing unit above and processes; In addition, filtering system filtrate cleaning of the present invention can select operation cleaning and resting period property continuously to clean two kinds of patterns depending on the concentration of dirty water pollutant and biomembranous thickness.
Compared with prior art, feature of the present invention is:
1. oxygenation filtering system floor space of the present invention is little, is cylindricality tank body, and transporting something containerized row and cleaning one, need not separately establish recoil wash pool, the floor space of facility can be reduced.
2. sewage before entering advanced treatment of wastewater pond through oxygen replenishing equipment oxygenation, rich oxygen containing sewage forms aerobic layer bottom filtering layer, promote microbial growth, filtering layer top then can form anoxic pond, and the removal for COD, ammonia nitrogen, TN provides good condition.
3. the space of filtrate porous sintered ceramic particle prosperity can be biofilm development, attachment provides good place, improves the biological activity of system; The absorption of porous sintered ceramic particle and crown_interception can also have higher processing rate to the SS in sewage; Meanwhile, the high-strength characteristic of porous sintered ceramic particle, avoids filtrate to be destroyed in cleaning process.
4. cleaning model is flexible, operation cleaning and resting period property continuously can be selected to clean two kinds of patterns according to the concentration of dirty water pollutant and biomembranous thickness.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment of the present invention oxygenation filtering system.
Mark in figure: 1-advanced treatment of wastewater pond; 2-water inlet pipe; 3-thrust-augmenting nozzle; 4-oxygenate apparatus; 5-intake pump; 6-vacuum breaker; 7-water distributor; 8-filtering layer; 9-leads abrasive cone; 10-sand developing tube; 11-carries sand valve; 12-blast main; 13-air lift; 14-sand-washing device; 15-washed-out sand rising pipe; 16-rising pipe; 17-effluent trough; 18-effluent weir; 19-evacuated tube.
Embodiment
Embodiment:
Recreation center of Guilin City treatment of domestic sewage advanced method concrete steps are:
(1) as shown in Figure 1, set up an oxygenation filtering system, comprise advanced treatment of wastewater pond 1, dirty
The size of water depth treating pond 1 is 2.8m × 6.5m(diameter × height), be provided with in the bottom in advanced treatment of wastewater pond 1 and lead abrasive cone 9; Lead above abrasive cone 9 and be provided with water distributor 7, water distributor 7 connects the thrust-augmenting nozzle 3 at center, advanced treatment of wastewater pond 1; Thrust-augmenting nozzle 3 the other end is connected with water inlet pipe 2; Water inlet pipe 2 stretches out advanced treatment of wastewater pond 1, and water inlet pipe 2 is provided with oxygen replenishing equipment 4, intake pump 5 and vacuum breaker 6; Center, advanced treatment of wastewater pond 1 is provided with sand developing tube 10; Sand developing tube 10 successively through leading abrasive cone 9, thrust-augmenting nozzle 3 center from bottom toward top, is provided with bottom sand developing tube 10 and carries sand valve 11, top is provided with sand-washing device 14; Carry sand valve 11 the other end and connect blast main 12, blast main 12 the other end stretches out advanced treatment of wastewater pond 1 and connects air lift 13; Sand-washing device 14 spirally around sand extraction tube 10 top, and is provided with washed-out sand rising pipe 15; Advanced treatment of wastewater pond 1 is provided with effluent trough 17 around inwall top; Effluent trough 17 top is provided with effluent weir 18, bottom is provided with rising pipe 16; Filtering layer 8 is provided with in advanced treatment of wastewater pond 1; Filtering layer 8 is highly 5.2m, filtering layer 8 height: height=0.8, advanced treatment of wastewater pond 1, and in filtering layer 8, filtrate is porous sintered ceramic particle, and particle diameter is 0.8 ~ 3mm; Blow-down pipe 19 is provided with bottom advanced treatment of wastewater pond 1;
Described oxygen replenishing equipment 4 is ejector;
Described water distributor 7 is perforated pipe, by center to periphery by-pass line radially water distribution uniformity.
Two, through the sanitary sewage of biochemical treatment, first by oxygen replenishing equipment 4, carry out abundant oxygenation to sewage, then send into advanced treatment of wastewater pond 1 by intake pump 5, vacuum breaker 6 prevents waste water injection; Sewage flows to water distributor 7 by the thrust-augmenting nozzle 3 at center, advanced treatment of wastewater pond 1 and carries out water distribution uniformity; After sewage flows out from water distributor 7, from lower to upper through filtering layer 8; Owing to acting on through oxygen replenishing equipment 4, containing higher oxygen in sewage, make to form aerobic environment in filtering layer 8 bottom, promote the propagation of microorganism; Meanwhile, the pore texture of porous sintered ceramic granule filter material prosperity can provide attachment space for microbial film; The growth of microbial film, can improve the removal effect of COD in sewage, ammonia nitrogen; Along with current rise, the dissolved oxygen content in sewage reduces gradually, forms layer of oxygen deficient, realize denitrification on the top of filtering layer 8, reduces the total nitrogen content in water; Meanwhile, because filtering layer 8 has absorption and crown_interception preferably, the SS content in sewage is reduced; Sewage eventually passes effluent weir 18 and flows into effluent trough 17, and by being discharged to storage water body outside rising pipe 16; Filtrate (porous sintered ceramic particle) bottom filtering layer 8 is under the effect of air lift 13, enter sand developing tube 10 by carrying sand valve 11 and be thus lifted in sand-washing device 14, filtering layer 8 upper surface fallen by filtrate after being cleaned by sand-washing device, the sewage that cleaning after stain substrate concentration is higher arrives washed-out sand rising pipe 15 through sand-washing device 14 water outlet, and is back to biological processing unit above and processes; Filtering velocity is 1.04m/h, and when hydraulic detention time 5 hours, each parameter of water inlet is: filtering velocity is v=1.04m/h, COD
cr=65mg/L, NH
3-N=8mg/L, TN=20mg/L, SS=21mg/L; The parameter of effluent quality is: COD
cr=45mg/L, NH
3-N=4mg/L, TN=14mg/L, SS=7mg/L; Clearance is respectively: COD
cr31%, NH
3-N50%, TN30%, SS67%; Working time: 6 months.
The content that above-described embodiment is illustrated should be understood to these embodiments only for being illustrated more clearly in the present invention, and be not used in and limit the scope of the invention, after having read the present invention, the amendment of those skilled in the art to the various equivalent form of value of the present invention all should belong to the application's claims limited range.
Claims (1)
1. utilize oxygenation filtering system to carry out a method for advanced treatment of wastewater, it is characterized in that concrete steps are:
(1) set up an oxygenation filtering system, comprise advanced treatment of wastewater pond (1), be provided with in the bottom of advanced treatment of wastewater pond (1) and lead abrasive cone (9); Lead abrasive cone (9) top and be provided with water distributor (7), water distributor (7) connects the thrust-augmenting nozzle (3) at advanced treatment of wastewater pond (1) center; Thrust-augmenting nozzle (3) the other end is connected with water inlet pipe (2); Water inlet pipe (2) stretches out advanced treatment of wastewater pond (1), and water inlet pipe (2) is provided with oxygen replenishing equipment (4), intake pump (5) and vacuum breaker (6); Advanced treatment of wastewater pond (1) center is provided with sand developing tube (10); Sand developing tube (10) is from bottom toward top successively through leading abrasive cone (9), thrust-augmenting nozzle (3) center, and sand developing tube (10) bottom is provided with and carries sand valve (11), top is provided with sand-washing device (14); Carry sand valve (11) the other end and connect blast main (12), described blast main (12) the other end stretches out advanced treatment of wastewater pond (1) and connects air lift (13); Sand-washing device (14) spirally around sand extraction tube (10) top, and is provided with washed-out sand rising pipe (15); Advanced treatment of wastewater pond (1) top is provided with effluent trough (17); Effluent trough (17) top is provided with effluent weir (18), bottom is provided with rising pipe (16); Filtering layer (8) is provided with in advanced treatment of wastewater pond (1); Bottom, advanced treatment of wastewater pond (1) is provided with blow-down pipe (19);
Described oxygen replenishing equipment (4) is ejector;
Described water distributor (7) is perforated pipe, by center to periphery by-pass line radially water distribution uniformity;
In described filtering layer (8), filtrate is porous sintered ceramic particle, and particle diameter is 0.8 ~ 3mm, and filtering layer (8) height is 0.6 ~ 0.9:1 with the ratio of advanced treatment of wastewater pond (1) height;
Described effluent trough (17) around advanced treatment of wastewater pond (1) inwall top, and is provided with effluent weir (18) on effluent trough (17) top;
(2) through the sanitary sewage of biochemical treatment, first by oxygen replenishing equipment (4), carry out abundant oxygenation to sewage, then send into advanced treatment of wastewater pond (1) by intake pump (5), vacuum breaker (6) prevents waste water injection; Sewage flows to water distributor (7) by the thrust-augmenting nozzle (3) at advanced treatment of wastewater pond (1) center and carries out water distribution uniformity; After sewage flows out from water distributor (7), from lower to upper through filtering layer (8); Due to through oxygen replenishing equipment (4) effect, containing higher oxygen in sewage, make to form aerobic environment in filtering layer (8) bottom, promote the propagation of microorganism; Meanwhile, the pore texture of porous sintered ceramic granule filter material prosperity can provide attachment space for microbial film; The growth of microbial film, can improve the removal effect of COD in sewage, ammonia nitrogen; Along with current rise, the dissolved oxygen content in sewage reduces gradually, forms layer of oxygen deficient, realize denitrification on the top of filtering layer (8), reduces the total nitrogen content in water; Meanwhile, because filtering layer (8) has absorption and crown_interception preferably, the SS content in sewage is reduced; Sewage eventually passes effluent weir (18) and flows into effluent trough (17), and is discharged to storage water body by outside rising pipe (16); Oxygenation filtering system of the present invention, can realize cleaning in normal advanced treatment of wastewater and filtrate carrying out simultaneously; The filtrate of filtering layer (8) bottom and porous sintered ceramic particle are under the effect of air lift (13), enter sand developing tube (10) by carrying sand valve (11) and be thus lifted in sand-washing device (14), filtering layer (8) upper surface fallen by filtrate after being cleaned by sand-washing device, the sewage that cleaning after stain substrate concentration is higher arrives washed-out sand rising pipe (15) through sand-washing device (14) water outlet, and is back to biological processing unit above and processes; In addition, oxygenation filtering system filtrate cleaning of the present invention can select operation cleaning and resting period property continuously to clean two kinds of patterns depending on the concentration of dirty water pollutant and biomembranous thickness.
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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CN106336011A (en) * | 2016-10-26 | 2017-01-18 | 桂林理工大学 | Method for treating sewage plant tail water by utilizing continuous backwash denitrification deep bed filter |
CN106379993A (en) * | 2016-10-26 | 2017-02-08 | 桂林理工大学 | Continuous back washing denitrification deep bed filter device for treating tail water from sewage plant |
WO2019221663A1 (en) * | 2018-05-18 | 2019-11-21 | Nordic Water Products Ab | Continuous sand filter |
CN110512902A (en) * | 2018-05-21 | 2019-11-29 | 上海华业环保有限公司 | A kind of environmentally friendly bathroom of A2NJBR jet-loop biomembrane process |
CN111233145A (en) * | 2020-01-16 | 2020-06-05 | 桂林理工大学 | Novel inorganic-organic material synergistic rapid-separation biochemical ball and preparation method thereof |
CN112250132A (en) * | 2020-10-15 | 2021-01-22 | 山东泰亚环保科技有限公司 | Process system for removing ammonia nitrogen by targeting adsorption material and use method thereof |
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US20070163958A1 (en) * | 2002-12-04 | 2007-07-19 | Blue Water Technologies, Inc. | Water Treatment Techniques |
CN103803698A (en) * | 2014-02-21 | 2014-05-21 | 宜兴市金德环保设备有限公司 | Biofilm active sand reactor and wastewater treatment method thereof |
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Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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US20070163958A1 (en) * | 2002-12-04 | 2007-07-19 | Blue Water Technologies, Inc. | Water Treatment Techniques |
CN103803698A (en) * | 2014-02-21 | 2014-05-21 | 宜兴市金德环保设备有限公司 | Biofilm active sand reactor and wastewater treatment method thereof |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106336011A (en) * | 2016-10-26 | 2017-01-18 | 桂林理工大学 | Method for treating sewage plant tail water by utilizing continuous backwash denitrification deep bed filter |
CN106379993A (en) * | 2016-10-26 | 2017-02-08 | 桂林理工大学 | Continuous back washing denitrification deep bed filter device for treating tail water from sewage plant |
WO2019221663A1 (en) * | 2018-05-18 | 2019-11-21 | Nordic Water Products Ab | Continuous sand filter |
CN110512902A (en) * | 2018-05-21 | 2019-11-29 | 上海华业环保有限公司 | A kind of environmentally friendly bathroom of A2NJBR jet-loop biomembrane process |
CN110512902B (en) * | 2018-05-21 | 2022-01-28 | 上海华业环保有限公司 | Environment-friendly bathroom adopting A2NJBR jet flow circulating biomembrane process |
CN111233145A (en) * | 2020-01-16 | 2020-06-05 | 桂林理工大学 | Novel inorganic-organic material synergistic rapid-separation biochemical ball and preparation method thereof |
CN112250132A (en) * | 2020-10-15 | 2021-01-22 | 山东泰亚环保科技有限公司 | Process system for removing ammonia nitrogen by targeting adsorption material and use method thereof |
CN112250132B (en) * | 2020-10-15 | 2024-04-30 | 山东泰亚环保科技有限公司 | Process system for removing ammonia nitrogen by targeting adsorption material and application method thereof |
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