CN103073109A - Composite biotrickling filter for nitrogen and phosphorus removal - Google Patents
Composite biotrickling filter for nitrogen and phosphorus removal Download PDFInfo
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- CN103073109A CN103073109A CN2013100071248A CN201310007124A CN103073109A CN 103073109 A CN103073109 A CN 103073109A CN 2013100071248 A CN2013100071248 A CN 2013100071248A CN 201310007124 A CN201310007124 A CN 201310007124A CN 103073109 A CN103073109 A CN 103073109A
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Abstract
The invention relates to a composite biotrickling filter for nitrogen and phosphorus removal. The biotrickling filter comprises a trickling filter body; an anoxic filter is arranged in the trickling filter body; an oxic filter is formed between the anoxic filter and the inner wall of the trickling filter body; a first bearing plate is arranged in the anoxic filter, and a first inorganic filler layer is arranged on the first bearing plate; and a second bearing plate is arranged in the oxic filter, and a second inorganic filler layer is arranged on the second bearing plate. The filter utilizes an anoxic and oxic alternate environment for nitrogen removal, nitrogenous organic compounds and ammonia nitrogen are oxidized into nitrate nitrogen in the oxic filter and backflow into the anoxic filter, and anoxic microorganisms uses the carbon source in raw water to revert nitrate nitrogen into nitrogen, so that nitrogen removal is achieved. The oxic filter removes organisms and oxidizes ammonia nitrogen into nitrate nitrogen, and high backflow improves the removal efficiency and the nitrogen removal efficiency on organic pollutants.
Description
Technical field
The present invention relates to technical field of sewage, especially a kind of denitrogenation dephosphorizing compound bio trickling filter.
Background technology
Along with industry, agricultural and expanding economy, the increasing of mankind's activity, many lakes of China, river are subject to eutrophication in various degree, and the major cause that causes eutrophication is to contain higher nitrogen phosphorus in the water body.
Common bio-trickling filter is the microbial film treatment process of a kind of high-level efficiency, less energy-consumption.Its principle is to utilize the microbial film that anchors on the carrier (filtrate), and the organic substance in the sewage is held back in absorption, and material is decomposed.Sewage is promoted in the turning spurt water device at top, filter tank, and turning spurt water device falls apart sewage to the packing layer surface uniformly, and sewage oozes drop downwards with the form of water droplet, and last sewage arrives water exhaust system, and part flows out the filter tank.In order to prevent that filler from stopping up, and improve organism, ammonia nitrogen removal efficient, generally have major part and reflux, this technique is high to the organic matter removal effect, and energy consumption is low, be convenient to management, but its denitrogenation dephosphorizing function is relatively poor.
Summary of the invention
The technical problem to be solved in the present invention is: in order to overcome the poor technical problem of trickling filter denitrogenation dephosphorizing function in the prior art, a kind of denitrogenation dephosphorizing compound bio trickling filter is provided, it has characteristics simple in structure, that energy consumption is low, efficient is high, can have again very strong denitrogenation dephosphorizing function when can realize taking out organic pollutant.
The technical solution adopted for the present invention to solve the technical problems is: a kind of denitrogenation dephosphorizing compound bio trickling filter, comprise the trickling filter body, and be provided with the anoxic filter tank in the described trickling filter body, consist of aerobic filter tank between described anoxic filter tank and the trickling filter inner body wall;
Described anoxic is provided with the first supporting plate in the filter tank, is laid with the first mineral filler layer on the first supporting plate, and bottom, described anoxic filter tank is positioned at the first supporting plate below and is provided with water inlet pipe, and top, anoxic filter tank is provided with turning spurt water device;
Be provided with the second supporting plate in the described aerobic filter tank, be laid with the second mineral filler layer on the second supporting plate, bottom, described aerobic filter tank is provided with rising pipe, be communicated with the backflow pond that is located at the trickling filter body exterior on the described rising pipe, the backflow pond is provided with return line, return line is communicated with water inlet pipe, is positioned on the trickling filter body wall of the second supporting plate below to have a plurality of ventilation openings.
In order to prevent that filler from entering in the inlet channel of turning spurt water device, be provided with flase floor between top, anoxic filter tank and the first electrodeless packing layer, the turning spurt water device water-in is communicated with the top in anoxic filter tank.
As preferably, the particle diameter in described the first mineral filler layer is 8-12mm, and the particle diameter in described the second mineral filler layer is 50-70mm.
Bottom, described anoxic filter tank is positioned at the first supporting plate below and also is provided with gas distribution pipe and water shoot, is communicated with the air compressor machine that is located at the trickling filter body exterior on the described gas distribution pipe, is provided with water discharge valve on the described water shoot, and water shoot one end passes into settling tank.When the anoxic filter tank is stopped up, open air compressor machine, after the aeration agitation, stirred for several minute, open the water discharge valve on the water shoot, water is entered settling tank after, the anoxic pond water discharge valve recovers running, can solve the packing layer blockage problem with this.
The present invention utilizes anoxic, the aerobic environment denitrogenation that replaces, and itrogenous organic substance and ammonia nitrogen are oxidized to nitric nitrogen in aerobic filter tank, refluxes and enters the anoxic filter tank, and the anoxic microorganism utilizes the carbon source in the former water, and nitrate-nitrogen reduction is become nitrogen, reaches the purpose of denitrogenation.Aerobic trickling filter is removed organism, and ammonia nitrogen is oxidized to nitric nitrogen, and higher reflux ratio has improved removal efficient and the nitric efficiency to organic pollutant.The present invention designs denitrogenation dephosphorizing compound bio trickling filter, has the following advantages:
(1) anoxic filter tank and aerobic filter tank are organically made up, utilize common trickling filter reflux to reflux as denitrification, do not increase in the situation of energy consumption and realized the efficient denitrification function;
(2) suspended substance in the water inlet is trapped in the anoxic filter tank, the filler after being difficult for stopping up in road turning spurt water device and the aerobic filter tank;
(3) to be provided with anticlogging gas flushing system be the air compressor machine inflation in the anoxic filter tank, and the water after the flushing enters the settling tank from the bottom;
(4) the Combined integrated gasifying device is simple in structure, takes up an area to lack, and is convenient to management, and running cost is low, and is high to the removal efficient of organic pollutant and nitrogen, in conjunction with chemical dephosphorization technique, cities and towns, rural domestic sewage treatment had very strong practicality and advance.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is structural representation of the present invention;
Fig. 2 is vertical view of the present invention.
Among the figure: 1. trickling filter body, 2. anoxic filter tank, 3. aerobic filter tank, 4. the first mineral filler layer, 5. the second mineral filler layer, 6. rising pipe, 7. water inlet pipe, 8. gas distribution pipe, 9. air compressor machine, 10. turning spurt water device, 11. the first supporting plate, 12. second supporting plates, 13. backflow ponds, 14. return line, 15. ventilation openings, 16. flase floors, 17. the backflow water pump, 18. posticums, 19. water shoots.
Embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the synoptic diagram of simplification, basic structure of the present invention only is described in a schematic way, so it only show the formation relevant with the present invention.
Embodiment
as Fig. 1 Fig. 2, the present invention includes trickling filter body 1, in trickling filter body 1, be provided with anoxic filter tank 2, between anoxic filter tank 2 and trickling filter body 1 inwall, form aerobic filter tank 3, in aerobic filter tank 3, be provided with the second supporting plate 12, on the second supporting plate 12, be laid with the second inorganic filler layer 5, particle diameter in the second inorganic filler layer 5 is 60mm, 3 bottoms, aerobic filter tank are provided with outlet pipe 6, on outlet pipe 6, be communicated with the backflow pond 13 that is located at trickling filter body 1 outside, backflow pond 13 is provided with return duct 14, return duct 14 is communicated with water inlet pipe 7, the interior part in backflow pond 13 is back to anoxic filter tank 2 through backflow water pump 17, another part enters down treatment facility one, be positioned on trickling filter body 1 wall of the second supporting plate 12 belows and have a plurality of ventilating openings 15,
Being provided with the particle diameter that is laid with on the first supporting plate 11, the first supporting plates 11 in the first mineral filler layer 4, the first mineral filler layer 4 in the anoxic filter tank 2 is 10mm, and 2 bottoms, anoxic filter tank are positioned at the first supporting plate 11 belows and are provided with water inlet pipe 7; The problem of stopping up in order to solve packing layer, 2 bottoms, anoxic filter tank are positioned at the first supporting plate 11 belows and also are provided with gas distribution pipe 8 and water shoot 19, be communicated with the air compressor machine 9 that is located at trickling filter body 1 outside on the described gas distribution pipe 8, be provided with water discharge valve on the described water shoot 19, water shoot 19 1 ends pass into settling tank, when anoxic filter tank 2 is stopped up, open air compressor machine 9, after the aeration agitation, stirred for several minute, open water shoot 19 water discharge valves, after water entered settling tank, close water discharge valve, recover running, solved the packing layer blockage problem.
In order to prevent that filler is washed in the turning spurt water device 10,2 tops, anoxic filter tank are provided with flase floor 16, turning spurt water device 10 water-ins are connected on this flase floor 16 and are communicated with anoxic filter tank 2, the posticum of the turning spurt water device 10 in of the present invention only has on aerobic filter tank 3 just now, above anoxic filter tank 2 then without posticum, sewage and recirculation water are entered in the anoxic filter tank 2 by water inlet pipe 7, anoxic filter tank 2 evenly is sprinkled upon on the second mineral filler layer 5 of aerobic filter tank 3 upper surfaces through turning spurt water device 10, pollution substance in the water is by the aerobic facultative microbe absorption on 3 surfaces, aerobic filter tank, decompose, the ventilation opening 15 of bottom can provide sufficient oxygen by ventilator.
The present invention designs inlet segment at whole bio-trickling filter cleverly with anoxic filter tank 2, not only can filter out the suspended substance in the water, prevents the blocking biological tricking filter filler; Also utilize bio-trickling filter backflow denitrogenation dephosphorizing, realize denitrogenation dephosphorizing in the less energy-consumption situation.
Device of the present invention is specially adapted to samll cities and towns, rural domestic sewage treatment, sewage is after grid is removed large suspended substance, enter in the equalizing tank, enter together anoxic filter tank 2 through pump lifting and recirculation water, anoxic filter tank 2 not only can denitrogenation, can also filter and remove the partial suspended material, prevent from stopping up aerobic filter tank 3.Majority of organic pollutants, ammonia nitrogen obtain degraded and remove in aerobic filter tank 3.The reflux ratio that system design is 2 ~ 4 times not only satisfies the requirement of denitrogenation, also strengthens the washing away of aerobic filter tank 3 filling surfaces, and accelerates microbial film and upgrades, and refluxes and also improves organic matter removal efficient.If anoxic filter tank 2 is stopped up, open air-flushing system, enter settling tank after the flushing.The apparatus system energy consumption is low, and operational management is simple, and is low to operator's technical requirements, and CODcr, ammonia nitrogen, total nitrogen are removed the efficient height, in conjunction with chemical dephosphorization, can accomplish qualified discharge fully, is particularly suitable for the town ﹠ country biological sewage and processes.
Claims (4)
1. a denitrogenation dephosphorizing compound bio trickling filter comprises the trickling filter body, it is characterized in that: be provided with the anoxic filter tank in the described trickling filter body, consist of aerobic filter tank between described anoxic filter tank and the trickling filter inner body wall;
Described anoxic is provided with the first supporting plate in the filter tank, is laid with the first mineral filler layer on the first supporting plate, and bottom, described anoxic filter tank is positioned at the first supporting plate below and is provided with water inlet pipe, and top, anoxic filter tank is provided with turning spurt water device;
Be provided with the second supporting plate in the described aerobic filter tank, be laid with the second mineral filler layer on the second supporting plate, bottom, described aerobic filter tank is provided with rising pipe, be communicated with the backflow pond that is located at the trickling filter body exterior on the described rising pipe, the backflow pond is provided with return line, return line is communicated with water inlet pipe, is positioned on the trickling filter body wall of the second supporting plate below to have a plurality of ventilation openings.
2. denitrogenation dephosphorizing compound bio trickling filter as claimed in claim 1 is characterized in that: be provided with flase floor between top, anoxic filter tank and the first electrodeless packing layer, the top in turning spurt water device water-in connection anoxic filter tank.
3. denitrogenation dephosphorizing compound bio trickling filter as claimed in claim 1 is characterized in that: the particle diameter in described the first mineral filler layer is 8-12mm, and the particle diameter in described the second mineral filler layer is 50-70mm.
4. denitrogenation dephosphorizing compound bio trickling filter as claimed in claim 1, it is characterized in that: bottom, described anoxic filter tank is positioned at the first supporting plate below and also is provided with gas distribution pipe and water shoot, be communicated with the air compressor machine that is located at the trickling filter body exterior on the described gas distribution pipe, be provided with water discharge valve on the described water shoot, water shoot one end passes into settling tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2013100071248A CN103073109A (en) | 2013-01-09 | 2013-01-09 | Composite biotrickling filter for nitrogen and phosphorus removal |
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| CN2013100071248A CN103073109A (en) | 2013-01-09 | 2013-01-09 | Composite biotrickling filter for nitrogen and phosphorus removal |
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| CN103073109A true CN103073109A (en) | 2013-05-01 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105271520A (en) * | 2015-09-16 | 2016-01-27 | 徐雪祥 | Annular biological aerated filter and application thereof |
| CN106976971A (en) * | 2017-04-24 | 2017-07-25 | 江苏大湖环境工程有限公司 | Integrated effluent disposal system |
| CN107162172A (en) * | 2017-05-24 | 2017-09-15 | 中山市和智电子科技有限公司 | A kind of osmosis system |
| CN111298635A (en) * | 2019-11-25 | 2020-06-19 | 东华大学 | Biological strengthening waste gas treatment device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105271520A (en) * | 2015-09-16 | 2016-01-27 | 徐雪祥 | Annular biological aerated filter and application thereof |
| CN106976971A (en) * | 2017-04-24 | 2017-07-25 | 江苏大湖环境工程有限公司 | Integrated effluent disposal system |
| CN107162172A (en) * | 2017-05-24 | 2017-09-15 | 中山市和智电子科技有限公司 | A kind of osmosis system |
| CN111298635A (en) * | 2019-11-25 | 2020-06-19 | 东华大学 | Biological strengthening waste gas treatment device |
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Application publication date: 20130501 |