CN203625132U - Bio-denitrogenation reactor for garbage leachate - Google Patents
Bio-denitrogenation reactor for garbage leachate Download PDFInfo
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- CN203625132U CN203625132U CN201320416864.2U CN201320416864U CN203625132U CN 203625132 U CN203625132 U CN 203625132U CN 201320416864 U CN201320416864 U CN 201320416864U CN 203625132 U CN203625132 U CN 203625132U
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- tank
- denitrification
- nitrification
- garbage leachate
- carbonation
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The utility model relates to the field of garbage leachate processing, and provides a bio-denitrogenation reactor for garbage leachate. The reactor comprises a denitrification tank, a carbonation tank, and a nitrification tank; the garbage leachate first enters the denitrification tank, then the processed water is discharged from the upper part of the denitrification tank and enters the carbonation tank, then the water is discharged from the lower part of the carbonation tank and enters the nitrification tank, then the water is discharged from the upper part of the nitrification tank and enters a post-treatment unit, and finally the mixed liquid is discharged from the bottom of the post-treatment unit and flows back to the denitrification tank through a reflux pump. The carbonation tank carries out carbonation reactions through controlling the inner dissolved oxygen, the nitrification tank carries out nitrification reactions through controlling the inner dissolved oxygen, the mixed liquid in the nitrification tank flows back to the denitrification tank, and finally the mixed liquid carries out denitrification reactions in the denitrification tank so as to remove the nitrogen. The bio-denitrogenation reactor is characterized in that: the carbonation and nitrification processes are separated, and thus dominant bacterium groups can be formed individually, so the denitrogenation efficiency is higher.
Description
Technical field
The utility model relates to the percolate process field of urban refuse sanitary landfill, garbage incinerating power plant, garbage transfer station etc., is specifically related to a kind of garbage leachate biological denitrification reaction unit.
Background technology
Garbage sanitary filling field or garbage incinerating power plant, garbage transfer stations etc. all can produce percolate, and percolate water quality is very complicated, variation water quality is large, the COD of this waste water, ammonia nitrogen, total nitrogen concentration is all very large, contain multiple poisonous and harmful, the position of carcinogenic teratogenesis, national environmental protection portion requires the percolate of all refuse landfills to process all necessary individual curing, water outlet reaches the standard of GB16889-2008 " household refuse landfill sites pollutent control criterion ", particularly total nitrogen and ammonia nitrogen have been made clear and definite requirement, general table 2 standard, ammonia nitrogen requires below 25mg/l, total nitrogen is below 40mg/l, therefore the difficult point that is percolate for this standard denitrogenation, and the C/N of percolate is more on the low side than again, arrive the landfill middle and later periods, ammonia nitrogen also can constantly rise, even reach 2000mg/l, therefore require very high for the clearance of ammonia nitrogen, at present many is exactly the traditional biochemical denitrification A/O technique using.
Existing A/O biological denitrification reactor generally comprises denitrification and nitrated two discrete processing units, is called A pond and O pond, and A pond is communicated with O pond by the rising pipe on its top.There is the situation of heterotrophic bacterium and autotrophic bacteria contention dissolved oxygen in this technical scheme, cause the autotrophic bacteria (nitrifier) in O pond can not become dominant bacteria in O pond, make nitrated efficiency low, thereby the nitric efficiency of whole system is low.But very high according to the Effluent criteria of the ammonia nitrogen of current country, therefore need current traditional A/O technique to be optimized design, to improve the clearance of ammonia nitrogen.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of garbage leachate biological denitrification reaction unit, overcomes in prior art because having heterotrophic bacterium and autotrophic bacteria contention dissolved oxygen in nitrification tank, causes nitrated inefficient defect.
For solving the problems of the technologies described above, the utility model provides a kind of garbage leachate biological denitrification reaction unit, comprise denitrification tank and nitrating pot, it is characterized in that, also comprise carbonization tank, first water inlet enters described denitrification tank, the top water outlet of denitrification tank is to carbonization tank, the bottom water outlet of carbonization tank outputs to nitrating pot, and the water outlet on nitrating pot top is to subsequent disposal unit, and bottom output mixed solution is back to denitrification tank by reflux pump.Described carbonization tank carries out carboniogenesis by controlling inner dissolved oxygen, controls dissolved oxygen and carry out nitrification in nitrating pot, and the mixed-liquor return in nitrating pot, in denitrification tank, carries out denitrification denitrogenation in denitrification tank.
Preferably, in described carbonization tank and nitrating pot, air inducing carries out aeration respectively.
On the induced exhaust of carbonization tank and nitrating pot, be respectively equipped with variable valve and air flowmeter, for controlling the air inducing amount of carbonization tank and nitrating pot.
Garbage leachate treatment device of the present utility model is reliable, and nitric efficiency is high, can guarantee that effluent quality is up to standard, has solved a great problem of current percolate denitrogenation.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the technical solution of the utility model is further described in detail.
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in Figure 1, there are respectively denitrification tank 1, carbonization tank 2, nitrating pot 3, first water inlet enters denitrification tank 1, the water outlet on denitrification tank 1 top is to carbonization tank 2, the water outlet of carbonization tank 2 bottoms outputs to nitrating pot 3, the water outlet on nitrating pot 3 tops is to subsequent disposal unit, and bottom output mixed solution is back to denitrification tank 1 by reflux pump 8.Simultaneously, carbonization tank 2 and nitrating pot 3 are interior carries out aeration by gas blower 4 air inducing respectively, wherein, has variable valve 5 and air flowmeter 9 on the airduct of carbonization tank 2, on the airduct of nitrating pot 3, there are variable valve 6 and air flowmeter 7, control respectively the air quantity in these two tanks.
The working mechanism of percolate high-efficiency biological denitrification reactor of the present utility model is:
By controlling the growing environment in carbonization tank, for example control dissolved oxygen, pH value etc. in tank, making in carbonization tank is carbonization environment, is mainly organic heterotrophic bacterium, under aeration effect, the organism in tank carries out oxygenolysis,
C(organic C)+2O
2→ 2H
2o+CO
2
The process need oxygen consumption of carbonization, the process of carbonization makes the pH value in tank substantially constant.
By controlling the growing environment in nitrating pot, for example, by controlling dissolved oxygen, the pH value etc. in tank, making in nitrating pot is nitrated environment, and under aeration effect, the nitrococcus in nitrating pot is by NH
3be oxidized to NO
- 2; Bacterium nitrobacter is by NO
- 2be oxidized to NO
- 3.Nitrifying process is:
NH
4 ＋＋2O
2→NO
－ 3＋2H
＋＋H
2O＋（307.1～438.9）×10
3J
Nitrification process will exhaust a large amount of oxygen, and nitrifying process makes the acid enhancing of environment.In nitration reaction, by controlling lower load, extend sludge retention time and guarantee carrying out smoothly of nitrification.
In denitrification tank, be denitrifying environment, comprise denitrifying bacteria.By the NO producing in nitrating pot
- 3be back in denitrification tank, by denitrifying bacteria, nitrate and nitrite be reduced into gaseous nitrogen and Nitrous Oxide, the nitrogen of gaseous state enters atmosphere, thus denitrogenation thoroughly.In denitrification process, organic being oxidized to:
5C(organic C)+H
2o+4NO
- 3→ 2N
2+ 4OH
-+ 5CO
2
Be mainly carbonization and nitrated being separated in two jars here, so more utilize carbonization and nitrated, can not affect because of the existence of heterotrophic bacterium (carbonization bacterium) the efficiency of nitrifier.Also can not affect because living environment is separately different the other side's growth, for example, can not affect because of the sour environment of nitrated generation the growth of carbonization bacterium, also can not remove to fight for because of carbonization bacterium the dissolved oxygen of nitrated bacterial classification, and cause the nutrition of nitrifier inadequate.
Through practice operation testing identity, garbage leachate treatment device of the present utility model is reliable, and nitric efficiency is high, can guarantee that effluent quality is up to standard, has solved a great problem of current percolate denitrogenation.
Should be noted that; the exemplary illustration that this embodiment is just done the utility model and do not limit its protection domain; those skilled in the art can also make to the utility model the change of some unsubstantialities; as long as the improvement of this patent being carried out without creative work, all within the protection domain of this patent.
Claims (3)
1. a garbage leachate biological denitrification reaction unit, comprise denitrification tank and nitrating pot, it is characterized in that, also comprise carbonization tank, first water inlet enters described denitrification tank, and the top water outlet of denitrification tank is to carbonization tank, and the bottom water outlet of carbonization tank outputs to nitrating pot, the water outlet on nitrating pot top is to subsequent disposal unit, and bottom output mixed solution is back to denitrification tank by reflux pump.
2. garbage leachate biological denitrification reaction unit according to claim 1, is characterized in that, in described carbonization tank and nitrating pot, air inducing carries out aeration respectively.
3. garbage leachate biological denitrification reaction unit according to claim 2, is characterized in that, is respectively equipped with variable valve and air flowmeter on the induced exhaust of carbonization tank and nitrating pot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320416864.2U CN203625132U (en) | 2013-07-12 | 2013-07-12 | Bio-denitrogenation reactor for garbage leachate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320416864.2U CN203625132U (en) | 2013-07-12 | 2013-07-12 | Bio-denitrogenation reactor for garbage leachate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203625132U true CN203625132U (en) | 2014-06-04 |
Family
ID=50811625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320416864.2U Expired - Lifetime CN203625132U (en) | 2013-07-12 | 2013-07-12 | Bio-denitrogenation reactor for garbage leachate |
Country Status (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106495412A (en) * | 2016-12-12 | 2017-03-15 | 枣庄学院 | A kind of coal chemical industry production sewage processing method and processing device |
| CN112079440A (en) * | 2020-09-14 | 2020-12-15 | 山东省环保产业股份有限公司 | Device and process for biological treatment of wastewater through zoning, independence and high-efficiency combination |
-
2013
- 2013-07-12 CN CN201320416864.2U patent/CN203625132U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106495412A (en) * | 2016-12-12 | 2017-03-15 | 枣庄学院 | A kind of coal chemical industry production sewage processing method and processing device |
| CN112079440A (en) * | 2020-09-14 | 2020-12-15 | 山东省环保产业股份有限公司 | Device and process for biological treatment of wastewater through zoning, independence and high-efficiency combination |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140604 |
|
| CX01 | Expiry of patent term |