CN202936244U - Thin layer trickling filtration device applied to cultivation circulating water treatment - Google Patents
Thin layer trickling filtration device applied to cultivation circulating water treatment Download PDFInfo
- Publication number
- CN202936244U CN202936244U CN2012205760394U CN201220576039U CN202936244U CN 202936244 U CN202936244 U CN 202936244U CN 2012205760394 U CN2012205760394 U CN 2012205760394U CN 201220576039 U CN201220576039 U CN 201220576039U CN 202936244 U CN202936244 U CN 202936244U
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- water
- filtering unit
- thin layer
- filling
- water treatment
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The utility model discloses a thin layer trickling filtration device applied to cultivation circulating water treatment. The thin layer trickling filtration device comprises a water distributing system and a water collecting system, wherein the water distributing system comprises at least one water intake pipe, wherein a plurality of water yielding sections are arranged on the water intake pipe, a plurality of filtering units are stacked under the water yielding sections, the filtering unit at the lowest layer is arranged above the water collecting system, and at least one water outlet is further arranged on the water collecting system. Due to the arrangement of the stacked filtering units, when aquaculture wastewater is spread on the filtering unit on an upper layer and drops into the filtering unit in a next layer through filtration, gaseous wastes in water overflows through trickling filtration, through gas-water exchanging, oxygen is dissolved in water, and after the filtering units absorb and nitrify harmful ammonia nitrogen and nitrite and water is purified, water can be discharged into a culture pond through the water outlet, and aquiculture water circulation can be achieved. The thin layer trickling filtration device has the characteristics of high water dissolved oxygen, lower water body COD (chemical oxygen demand), convenience for installation, simplicity for management, and low invest and running costs, and is suitable for processing aquaculture wastewater.
Description
Technical field
The utility model relates to a kind of biological filter system of wastewater treatment, particularly relates to a kind of thin layer trickling that is applied to cultivate circulating water treatment.
Background technology
In circulating water cultivation, the former water of seedling system and breeding wastewater, except suspended organic matter, also there are great amount of soluble organism and the hazardous and noxious substances such as ammonia nitrogen, nitrite nitrogen, consume the water body dissolved oxygen, cultivated animals is produced poison, must process.at present, for dissolved organic matter and ammonia nitrogen in grow seedlings former water and breeding wastewater, the hazardous and noxious substances treatment technologies such as nitrite nitrogen, the main biologic filtration method that adopts, its ultimate principle is under the high-solubility oxygen condition, the microorganism growth breeding, be enriched in and form microbial film on filling surface, biophase on microbial film is abundant, bacterium is arranged, fungi, thread fungus, protozoon, metazoan etc., form more stable microecosystem, when current during through filter material layer, be adsorbed in deliquescent organic pollutant and microbial film contact process in water body, oxidation and resolve into CO2, ammonia nitrogen oxidized or change into the high price form nitric nitrogen.Simultaneously, filter material layer has good crown_interception to the larger suspended substance of particle diameter in water.Organic pollutant in water and ammonia nitrogen are effectively removed under the crown_interception acting in conjunction of itself and filtrate.
Biofiltration mainly comprises immersion and the large class of filling type two, and the former comprises immersion biofiltration, BAF etc., but floor space is large, nitrification function is not strong because it has, and the shortcoming that energy consumption is large mainly is applicable to oligosaprobic landscape water and processes; The latter mainly contains drips filter, blodisc, biological fluidized bed etc., yet blodisc, biological fluidized bed are invested greatly, working cost is high, use less.
And the maximum characteristics of aquiculture waste water are that ammonia nitrogen, nitrite content are high, and COD is relatively low, and aquaculture requires to remove as far as possible exactly the toxic compounds such as ammonia nitrogen, nitrite in water body to circulating water quality.Therefore the biological filter system that is applied to aquiculture recycled water must have nitrification ability is strong, filler must possess certain enrichment ammonia nitrogen function (having certain cation exchange capacity (CEC)), Dissolved Oxygen in Water is high, water body COD is lower, easy for installation, the management simple, investment and working cost low etc.
The utility model content
The purpose of this utility model is to provide a kind of thin layer trickling that is applied to cultivate circulating water treatment.
The solution that the utility model solves its technical problem is: a kind of thin layer trickling that is applied to cultivate circulating water treatment, it comprises water distribution system and water gathering system, described water distribution system comprises at least one water inlet pipe, described water inlet pipe is provided with some sections water exit ends, be laminated with some layers of filtering unit under described water exit end, undermost filtering unit is arranged on the top of water gathering system, also is provided with at least one water outlet on described water gathering system.
As further improvement in the technical proposal, described filtering unit comprises the filter box that the upper end is uncovered, and the bottom of described filter box is provided with water distribution board, and the inside of described filter box is filled with the porous medium ceramics filling.
As further improvement in the technical proposal, the height of described filter box is higher than the thickness of the porous medium ceramics filling of filling in filter box.
As further improvement in the technical proposal, the number of plies of described filtering unit is 5 layers, the grain diameter of the porous medium ceramics filling of filling in the filtering unit of 3 layers in the above is 3～5 millimeters, and the grain diameter of the porous medium ceramics filling of filling in the filtering unit of 2 layers below is 5～10 millimeters.
As further improvement in the technical proposal, also be provided with auxiliary stand between stacked filtering unit.
The beneficial effects of the utility model are: the utility model is by arranging stacked filtering unit, when filtering unit that breeding wastewater is dispersed in the upper strata drips filter to the filtering unit of lower one deck the time, in water, off-gas overflows in dripping filter, exchange by air water, oxygen is soluble in water, and, filtering unit absorbs nitrated to harmful ammonia nitrogen, nitrite, after purifying water, drain in culturing pool by water outlet, realize the cultivation water circuit.The utlity model has that Dissolved Oxygen in Water is high, water body COD is lower, easy for installation, management is simple, investment and the characteristics such as working cost is low, be applicable in the processing of breeding wastewater.
Description of drawings
Below in conjunction with accompanying drawing and example, the utility model is further described.
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of filtering unit in the utility model.
Embodiment
Below in conjunction with accompanying drawing, describe application of the present utility model in detail.
With reference to Fig. 1～Fig. 2, a kind of thin layer trickling that is applied to cultivate circulating water treatment, it comprises water distribution system and water gathering system 3, water distribution system comprises at least one water inlet pipe 1, described water inlet pipe 1 is provided with some sections water exit ends, be laminated with some layers of filtering unit 4 under water exit end, undermost filtering unit 4 is arranged on the top of water gathering system 3, also is provided with at least one water outlet 5 on water gathering system 3.
By stacked filtering unit 4 is set, when 4 filters of filtering unit that breeding wastewater is dispersed in the upper strata are to the filtering unit 4 of lower one deck, in water, off-gas overflows in dripping filter, exchange by air water, oxygen is soluble in water, and, filtering unit absorbs nitrated to harmful ammonia nitrogen, nitrite, after purifying water, drain in culturing pool by water outlet 5, realize the cultivation water circuit.The utlity model has that Dissolved Oxygen in Water is high, water body COD is lower, easy for installation, management is simple, investment and the characteristics such as working cost is low, be applicable in the processing of breeding wastewater.
Be further used as preferred embodiment, filtering unit 4 comprises the uncovered filter box in upper end 41, and the bottom of filter box 41 is provided with water distribution board, and water distribution board carries out water distribution uniformity again to the sewage of upper strata process filler, make the sewage fluidised form more complicated and diversified, be conducive to improve Dissolved Oxygen in Water.The inside of filter box 41 is filled with porous medium ceramics filling 42.Porous medium ceramics filling 42 is take clay as main raw material, by the manual shift silica alumina ratio, add short biomass and trace element etc., high temperature sintering is expanded to be formed, this filler has the poly-P function of the N of suction, can will flow through ammonia nitrogen, phosphoric acid salt etc. in the filter bed water body be enriched in the packing area, form the high local concentrations nitrification zone, be conducive to improve system's nitrification function; This filler has the strong short ability of giving birth to, and can promote microorganism in the packing area and give birth to growth; This filler is light ceramic, and specific surface area is large, and is easy for installation, and cost is low.
Be further used as preferred embodiment, the height of filter box 41 is higher than the thickness of the porous medium ceramics filling 42 of filling in filter box.The height of filter box 41 is 12～15 the insides, and the thickness of every layer of porous medium ceramics filling 42 is 10 centimetres of left and right, and the filler upper strata is vacant, and the mass transfer of having strengthened air and sewage mixes.
Be further used as preferred embodiment, the number of plies of filtering unit 4 is 5 layers, the grain diameter of the porous medium ceramics filling of filling in the filtering unit of 3 layers in the above is 3～5 millimeters, and the grain diameter of the porous medium ceramics filling of filling in the filtering unit of 2 layers below is 5～10 millimeters.like this, form the filler layered structure of upper tightly lower sparse, when sewage flows under upper, suspended substance and dissolved organic matter in the filtering unit trap water of the closeer filler of upper strata filling, and it is carried out oxygenolysis, COD in water body is descended rapidly, when effluent stream through in during lower floor, the nitrifier of adsorbing on filler carries out oxygenolysis to ammonia nitrogen in water, macrobead filler and laminate structure have guaranteed the dissolved oxygen that nitration reaction is necessary, and in water body, low organic concentration has guaranteed that this packing area living microorganism take nitrated class autotrophic microorganism as main, when in water body, organic content is higher, heterotrophic microorganism has comparative advantage than autotrophic microorganism, Nitrite bacteria belongs to autotrophic microorganism, be difficult to biofilm and form dominant population in the higher water body of organic content.
Be further used as preferred embodiment, 4 of stacked filtering units also are provided with auxiliary stand 2, and the filtering unit 4 on upper strata and 4 of the filtering units of lower floor have sufficient space, are convenient in water treatment the air water exchange fully, and like this, the water body dissolved oxygen is high, and nitrification function is strong.
More than that better embodiment of the present utility model is illustrated, but the invention is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent modifications or replacement under the prerequisite of the utility model spirit, the modification that these are equal to or replacement all are included in the application's claim limited range.
Claims (5)
1. thin layer trickling that is applied to cultivate circulating water treatment, it is characterized in that: it comprises water distribution system and water gathering system (3), described water distribution system comprises at least one water inlet pipe (1), described water inlet pipe (1) is provided with some sections water exit ends, be laminated with some layers of filtering unit (4) under described water exit end, undermost filtering unit (4) is arranged on the top of water gathering system (3), also is provided with at least one water outlet (5) on described water gathering system (3).
2. the thin layer trickling that is applied to cultivate circulating water treatment according to claim 1, it is characterized in that: described filtering unit (4) comprises the uncovered filter box in upper end (41), the bottom of described filter box (41) is provided with water distribution board, and the inside of described filter box (41) is filled with porous medium ceramics filling (42).
3. the thin layer trickling that is applied to cultivate circulating water treatment according to claim 2, it is characterized in that: the height of described filter box (41) is higher than the thickness of the porous medium ceramics filling (42) of filling in filter box.
4. the thin layer trickling that is applied to cultivate circulating water treatment according to claim 3, it is characterized in that: the number of plies of described filtering unit (4) is 5 layers, the grain diameter of the porous medium ceramics filling of filling in the filtering unit of 3 layers in the above is 3～5 millimeters, and the grain diameter of the porous medium ceramics filling of filling in the filtering unit of 2 layers below is 5～10 millimeters.
5. the thin layer trickling that is applied to cultivate circulating water treatment according to claim 2, is characterized in that: also be provided with auxiliary stand (2) between stacked filtering unit (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205760394U CN202936244U (en) | 2012-11-02 | 2012-11-02 | Thin layer trickling filtration device applied to cultivation circulating water treatment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205760394U CN202936244U (en) | 2012-11-02 | 2012-11-02 | Thin layer trickling filtration device applied to cultivation circulating water treatment |
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| Publication Number | Publication Date |
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| CN202936244U true CN202936244U (en) | 2013-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012205760394U Expired - Fee Related CN202936244U (en) | 2012-11-02 | 2012-11-02 | Thin layer trickling filtration device applied to cultivation circulating water treatment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104478082A (en) * | 2014-12-01 | 2015-04-01 | 广东省农业科学院农业资源与环境研究所 | Culture wastewater biphase biological purification system and treatment method thereof |
| CN105236560A (en) * | 2015-11-06 | 2016-01-13 | 江苏大湖环境工程有限公司 | Biological sewage treatment filter box |
-
2012
- 2012-11-02 CN CN2012205760394U patent/CN202936244U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104478082A (en) * | 2014-12-01 | 2015-04-01 | 广东省农业科学院农业资源与环境研究所 | Culture wastewater biphase biological purification system and treatment method thereof |
| CN105236560A (en) * | 2015-11-06 | 2016-01-13 | 江苏大湖环境工程有限公司 | Biological sewage treatment filter box |
| CN105236560B (en) * | 2015-11-06 | 2018-01-02 | 江苏大湖环境工程有限公司 | Sewage Biological Treatment filter box |
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| 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: 20130515 Termination date: 20131102 |