CN201825817U - Device for removing nitrate nitrogen in aquatic water - Google Patents
Device for removing nitrate nitrogen in aquatic water Download PDFInfo
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- CN201825817U CN201825817U CN2010202652558U CN201020265255U CN201825817U CN 201825817 U CN201825817 U CN 201825817U CN 2010202652558 U CN2010202652558 U CN 2010202652558U CN 201020265255 U CN201020265255 U CN 201020265255U CN 201825817 U CN201825817 U CN 201825817U
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Abstract
The utility model relates to a device for removing nitrate nitrogen in aquatic water, relating to aquatic water treating devices. The device adopts a sulfur autotrophy denitrification section and a BDPs carbon source heterotrophism denitrification section, and is characterized in that the sulfur autotrophy denitrification section and the BDPs carbon source heterotrophism denitrification section are arranged in series in an inner cavity of the device from bottom to top by the volume ratio being 1:1; a water inlet is arranged at the lower part of the device; a sulfur/limestone packing layer of the sulfur autotrophy denitrification section is formed by mixing sulfur granules and the limestone according to the volume ratio being 1:2, and a water distribution plate is arranged at the lower end of the sulfur/limestone packing layer; the BDPs carbon source heterotrophism denitrification section is filled with a BDPs carbon source filler and a zeolite filler which are mixed evenly by polyvinyl alcohol, polydiethylene glycol sebacate and zeolite by the volume ratio of being 2:3:5; a water outlet baffle is arranged at the upper end of a BDPs carbon source filler and zeolite filler layer; a water outlet is arranged at the upper part of the device above the water outlet baffle; and an exhaust port is arranged at the upper end of the device.
Description
Technical field
The utility model relates to the aquaculture water treatment device.
Background technology
Bio-filter technology is the core technology of aquarium and circulating water culture system water treatment.At present, the overwhelming majority only disposes nitrated type biofilter in aquarium and the circulating water culture system water technology, efficiently ammonia nitrogen and nitrite nitrogen is oxidized to nitric nitrogen, causes that nitric nitrogen runs up to higher concentration in the cultivating system, usually up to more than the 100mg/L.Although nitric nitrogen is lower than ammonia nitrogen and nitrite nitrogen to the toxicity of culturing object, but the high density nitric nitrogen also can influence the growth of culturing object, cause the speed of growth to slow down, surviving rate reduces, immunity degradation, or even the nitric nitrogen of intermediate concentration (700-1400 μ mol/L) also can influence the tissue development of culturing object, cause physique to die down even death, studies show that, in aquarium and circulating water culture system, nitric nitrogen concentration in the cyclic culture water should be controlled at the safe concentration scope below the 50mg/L.
The common method of removing nitric nitrogen in the water mainly contains ion exchange method, membrane separation process, biological denitrification method, hydroponic plant method etc.The biological denitrification method is considered to optimum cyclic culture water method of denitration, but in the cyclic culture water in default of enough nutrition sources (carbon-nitrogen ratio is lower than 1 in the breeding water) and suitable factors such as working condition, denitration efficiency is very limited.Common heterotrophic denitrification need add organic carbon source such as methyl alcohol or solid carbon source such as cotton, rice husk to improve carbon-nitrogen ratio, adds organic carbon source such as methyl alcohol and exists cost height, additive to exist risk, needs configuration aftertreatment device etc. former thereby be not used to cycle of treatment breed water to culturing object; Solid carbon source such as cotton, rice husk also because exist the carbon release efficiency low, easily pollute factor such as effluent quality and not selected.The hydroponic plant method is difficult to promote the use of because floor space is big, efficient is low.
The autotrophic denitrification method is divided into sulphur autotrophic denitrification and hydrogen autotrophic denitrification two classes.The hydrogen autotrophic denitrification can not produce the negative product of any reaction, be a kind of safe method, but because the external source hydrogen supply is easy to blast and cost is higher, and the electrolytic hydrogen production power consumption cost is higher, increase the enterprise operation cost, so the application of hydrogen autotrophic denitrification in the cyclic culture water treatment is very limited.Optionally remove nitrate in the water with sulphur as the autotrophy source, and cost is lower, economical convenient.But the defective of this method maximum is the sulphur that adds is oxidized to sulfate radical, causes sulphate content increase in the water outlet; And can cause H in the water outlet
+Raise, the pH value descends, and influences the nitrification efficiency of nitrated biofilter in the cultivating system.Add biodegradable polymers (BDPs) separately and carry out heterotrophic denitrification, still have the low problem of solid carbon source release efficiency, seriously restrict the raising of denitrification efficient as carbon source.
The utility model content
The purpose of this utility model is to found a kind of device of removing nitric nitrogen in the cyclic culture water.
The technical solution of the utility model adopts sulphur autotrophic denitrification section and BDPs carbon source heterotrophic denitrification section, it is characterized in that sulphur autotrophic denitrification section and BDPs carbon source heterotrophic denitrification section were arranged in series in the inner chamber of device in 1: 1 by volume from bottom to top, water-in is arranged at the bottom of device, the sulphur of sulphur autotrophic denitrification section/limestone filler layer is 1: 2 a ratio uniform mixing by sulfur granules and Wingdale by volume, is provided with water distribution board in sulphur/limestone filler layer lower end; BDPs carbon source heterotrophic denitrification section is filled BDPs carbon source filler and zeolite filler, BDPs carbon source filler and zeolite filler layer are carbon source and biological attachment carrier with polyvinyl alcohol (PVA), poly butylene succinate (PBS), be propping material with the zeolite and adhere to carrier, polyvinyl alcohol, poly butylene succinate, zeolite are 2: 3: 5 ratio uniform mixing by volume, be provided with the water outlet baffle plate at BDPs carbon source filler and zeolite filler layer upper end, water outlet is arranged at the device top of water outlet baffle plate top, and there is venting port the upper end of device.
The two kinds of processes of BDPs carbon source heterotrophic denitrification and sulphur autotrophic denitrification that the utility model has the advantages that combine, employing can discharge the BDPs of safe carbon source as solid carbon source, farthest reduced the side effect of reaction, have stable effluent quality, control is easy, has realized efficient, the miniaturization of cyclic culture denitrogenation of water device.
Description of drawings
Accompanying drawing is sulphur autotrophic denitrification-BDPs carbon source heterotrophic denitrification schematic representation of apparatus.
Embodiment
The utility model (referring to accompanying drawing) adopts sulphur autotrophic denitrification section 3 and BDPs carbon source heterotrophic denitrification section 5, sulphur autotrophic denitrification section and BDPs carbon source heterotrophic denitrification section were arranged in series in the inner chamber of device in 1: 1 by volume from bottom to top, water-in 1 is arranged at the bottom of device, the sulphur of sulphur autotrophic denitrification section/limestone filler layer 4 is 1: 2 a ratio uniform mixing by sulfur granules and Wingdale by volume, is provided with water distribution board 2 in sulphur/limestone filler layer lower end; BDPs carbon source heterotrophic denitrification section is filled BDPs carbon source filler and zeolite filler, BDPs carbon source filler and zeolite filler layer 6 are carbon source and biological attachment carrier with polyvinyl alcohol (PVA), poly butylene succinate (PBS), be propping material with the zeolite and adhere to carrier, polyvinyl alcohol, poly butylene succinate, zeolite are 2: 3: 5 ratio uniform mixing by volume, be provided with water outlet baffle plate 7 at BDPs carbon source filler and zeolite filler layer upper end, water outlet 9 is arranged at the device top of water outlet baffle plate top, and there is venting port 8 upper end of device.
The purification mechanism of this device is as follows: pending cyclic culture water enters from the lower water inlet 1 of sulphur autotrophic denitrification-BDPs carbon source heterotrophic denitrification device, hydraulic detention time is 6h, culture water behind water distribution board 2 water distribution uniformities, sulphur/limestone filler the layer 4 of the sulphur autotrophic denitrification section 3 of flowing through from bottom to top, in sulphur/limestone filler layer 4, thiobacillus denitrificans is that electron donor carries out autotrophic denitrification with the elemental sulfur, removes the part nitric nitrogen, and the generation gaseous nitrogen, Wingdale balance basicity; The sulfate radical that produces in remaining nitric nitrogen and the sulphur autotrophic denitrification process in the breed water enters BDPs carbon source filler and the zeolite filler layer 6 in the BDPs carbon source heterotrophic denitrification section 5 together, in described BDPs carbon source filler and zeolite filler layer 6, the heterotrophic denitrification bacterium will be cultured residue nitric nitrogen removal in the water, and the generation gaseous nitrogen, sulphate reducing bacteria is reduced into hydrogen sulfide with sulfate radical.Breed water after the processing is behind water outlet baffle plate 7, from top water outlet 9 outflows of sulphur autotrophic denitrification-BDPs carbon source heterotrophic denitrification device.Gaseous nitrogen that produces in the reaction process and hydrogen sulfide are discharged from venting port 8.
When needs blowdown mud, stop into water, the backwash water inlet enters from top water outlet 9, and BDPs carbon source filler and zeolite filler layer 6 and the sulphur/limestone filler layer 4 of flowing through is discharged from the backwash water outlet then.
This device shows that to cyclic culture water purification effect the average removal rate of nitric nitrogen and nitrite nitrogen is respectively 93.1% and 99.5% in the cyclic culture water.
Claims (1)
1. remove the device of culturing nitric nitrogen in the water, adopt sulphur autotrophic denitrification section and BDPs carbon source heterotrophic denitrification section, it is characterized in that sulphur autotrophic denitrification section and BDPs carbon source heterotrophic denitrification section were arranged in series in the inner chamber of device in 1: 1 by volume from bottom to top, water-in is arranged at the bottom of device, the sulphur of sulphur autotrophic denitrification section/limestone filler layer lower end is provided with water distribution board, be provided with the water outlet baffle plate at BDPs carbon source filler and zeolite filler layer upper end, water outlet is arranged at the device top of water outlet baffle plate top, and there is venting port the upper end of device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202652558U CN201825817U (en) | 2010-07-20 | 2010-07-20 | Device for removing nitrate nitrogen in aquatic water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202652558U CN201825817U (en) | 2010-07-20 | 2010-07-20 | Device for removing nitrate nitrogen in aquatic water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201825817U true CN201825817U (en) | 2011-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202652558U Expired - Fee Related CN201825817U (en) | 2010-07-20 | 2010-07-20 | Device for removing nitrate nitrogen in aquatic water |
Country Status (1)
| Country | Link |
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| CN (1) | CN201825817U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102267760A (en) * | 2011-07-07 | 2011-12-07 | 清华大学 | Reactor and method for simultaneously removing nitrate and farm chemical from underground water |
| CN102923854A (en) * | 2012-11-06 | 2013-02-13 | 沈阳建筑大学 | Method regarding wood chips as carbon source and for removing nitrate in underground water by using solid-phase heterotrophy and sulfur autotrophic integrated denitrification |
| CN104085985A (en) * | 2013-04-01 | 2014-10-08 | 上海海洋大学 | Method for removing nitrogen in aquatic product culture water |
| CN110386676A (en) * | 2019-08-12 | 2019-10-29 | 东莞市台腾环保材料科技有限公司 | A kind of double tank up flow type biological filter tank systems and its method for handling organic matter |
| CN110746036A (en) * | 2019-09-29 | 2020-02-04 | 郑州大学 | Low-carbon-source sewage autotrophic denitrification deep denitrification device and method |
| CN110902844A (en) * | 2019-12-04 | 2020-03-24 | 东莞市台腾环保材料科技有限公司 | Sulfur autoxidation denitrification and iso-denitrification combined deep denitrification device and method |
| CN112520847A (en) * | 2019-09-19 | 2021-03-19 | 天津大学 | Biological retention pond filler based on sulfur autotrophic denitrification |
| CN112897689A (en) * | 2021-01-26 | 2021-06-04 | 东北大学 | Composite biological filler and preparation method thereof |
| CN116903153A (en) * | 2023-08-25 | 2023-10-20 | 中国水产科学研究院珠江水产研究所 | Cultivation tail water denitrification and dephosphorization device and method based on agricultural waste filler |
-
2010
- 2010-07-20 CN CN2010202652558U patent/CN201825817U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102267760A (en) * | 2011-07-07 | 2011-12-07 | 清华大学 | Reactor and method for simultaneously removing nitrate and farm chemical from underground water |
| CN102923854A (en) * | 2012-11-06 | 2013-02-13 | 沈阳建筑大学 | Method regarding wood chips as carbon source and for removing nitrate in underground water by using solid-phase heterotrophy and sulfur autotrophic integrated denitrification |
| CN102923854B (en) * | 2012-11-06 | 2014-03-12 | 沈阳建筑大学 | Method regarding wood chips as carbon source and for removing nitrate in underground water by using solid-phase heterotrophy and sulfur autotrophic integrated denitrification |
| CN104085985A (en) * | 2013-04-01 | 2014-10-08 | 上海海洋大学 | Method for removing nitrogen in aquatic product culture water |
| CN110386676A (en) * | 2019-08-12 | 2019-10-29 | 东莞市台腾环保材料科技有限公司 | A kind of double tank up flow type biological filter tank systems and its method for handling organic matter |
| CN112520847A (en) * | 2019-09-19 | 2021-03-19 | 天津大学 | Biological retention pond filler based on sulfur autotrophic denitrification |
| CN110746036A (en) * | 2019-09-29 | 2020-02-04 | 郑州大学 | Low-carbon-source sewage autotrophic denitrification deep denitrification device and method |
| CN110746036B (en) * | 2019-09-29 | 2022-04-19 | 郑州大学 | Low-carbon-source sewage autotrophic denitrification deep denitrification device and method |
| CN110902844A (en) * | 2019-12-04 | 2020-03-24 | 东莞市台腾环保材料科技有限公司 | Sulfur autoxidation denitrification and iso-denitrification combined deep denitrification device and method |
| CN112897689A (en) * | 2021-01-26 | 2021-06-04 | 东北大学 | Composite biological filler and preparation method thereof |
| CN112897689B (en) * | 2021-01-26 | 2022-09-23 | 东北大学 | Composite biological filler and preparation method and application thereof |
| CN116903153A (en) * | 2023-08-25 | 2023-10-20 | 中国水产科学研究院珠江水产研究所 | Cultivation tail water denitrification and dephosphorization device and method based on agricultural waste filler |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110511 Termination date: 20110720 |