CN203700035U - Biological detention tank for enhancing removal effect of nitrogen in storm runoff - Google Patents
Biological detention tank for enhancing removal effect of nitrogen in storm runoff Download PDFInfo
- Publication number
- CN203700035U CN203700035U CN201420025661.5U CN201420025661U CN203700035U CN 203700035 U CN203700035 U CN 203700035U CN 201420025661 U CN201420025661 U CN 201420025661U CN 203700035 U CN203700035 U CN 203700035U
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- main body
- pit
- runoff
- tank
- delaying basin
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- Y02W10/12—
Abstract
The utility model belongs to the field of water treatment, and provides a biological detention tank for enhancing a removal effect of nitrogen in storm runoff. The biological detention tank comprises a main body, reverse filtration backflow accessories, packing and herbaceous plants, wherein the main body is a pit filled with the packing and comprises a sandy soil layer, geotechnical cloth and a gravel layer which are laid from top to bottom; the reverse filtration backflow accessories include a water drainage pipe, a water storage tank and a reverse filtration backflow pipe; the water storage tank is arranged outside the main body and connected to the main body through the water drainage pipe and the reverse filtration backflow pipe, and the inner part of the reverse filtration backflow pipe is sequentially filled with fine sand, geotechnical cloth, coarse sand, geotechnical cloth and gravels from the water storage tank to the pit; the herbaceous plants are planted at the upper part of the packing. The biological detention tank provided by the utility model has the advantages that the water storage tank is additionally arranged, so that the retaining proportion of runoff in a rainfall preliminary stage is substantially increased, and the pollution load of rainwater runoff is reduced; the reverse filtration backflow accessories are additionally arranged so as to ensure that an anoxic zone of the main body of the detention tank is at an anoxic state, and the removal effect of nitrate nitrogen in drained runoff is improved.
Description
Technical field
The utility model belongs to water treatment field, is specifically related to a kind of biological treatment device of the nitrogen that can effectively remove.
Background technology
Biological delaying basin is to utilize soil-plant system rainwash to be carried out to the Prosthesis of Flow-rate adjustment, water correction, it at regulation and control storm runoff, alleviate waterlogging disaster, remove the aspects such as rainwash pollutent and there is positive effect, thereby be used widely.The main body of biological delaying basin is the body structure of surface grafting indigenous plant, is filled with the sandy soil that perviousness is strong in this casing.Biological delaying basin can be tackled by plant, soil infiltration, reduces the peak discharge of storm runoff; Meanwhile, also can, by adsorption filtration, biological degradation, reduce the pollutant load of storm runoff.
Consider increasing sharply and the frequent generation of Extreme Precipitation event of waterproof ground ratio that urbanization and new countryside construction follow, utilize the Characteristics and Water Conservation Function of soil-plant system, carry out the regulation and control of storm runoff peak discharge and Runoff contaminants and remove, the major measure of having become and alleviated city waterlogging, controlling rainwater pollution.Glassed swale, Vegetative Filter Strips, the delay pool, artificial swamp, biological delaying basin, Green Roof etc. are all the particular embodimenies of such measure.Wherein, biological delaying basin in regulated flow amount, to improve effect aspect Runoff particularly outstanding.By soil infiltration and evapotranspiration, biological delaying basin can be cut down 50～90% flow path surface; By approach such as chemisorption, volatilization, ion-exchange, filtration, microbial transformation, microorganism and plant absorptions, biological delaying basin can be removed in rainwash 54～59% total suspended solid, 32～65% total nitrogen and 65～79% total phosphorus, reduce heavy metal, pathogenic bacteria concentration in runoff, thereby promote water quality.Biological delaying basin is regulation and control storm runoff, improves the effective measure of Runoff, uncertain, especially general to the removal effect of total nitrogen in runoff but its removal effect to Runoff contaminants exists.This be because: on the one hand, in biological delaying basin, the good water-permeable and air permeable of filler, impels ammonium nitrogen to be converted into nitric nitrogen by nitrification; On the other hand, the disappearance of anaerobic environment, makes denitrification in the body of pond be suppressed and be unfavorable for that nitric nitrogen is converted into nitrogen.Therefore, in biological delaying basin excretion runoff, nitrate nitrogen content is higher.
In order to strengthen the conversion strength of denitrification to nitric nitrogen in biological delaying basin, improved design, by moving a segment distance on underground drain and pond body interface position, becomes the oxygen-starved area not had by water logging for a long time at the bottom of making pond and between drain interface.But, in the situation that two rainfalls are grown interval time, oxygen-starved area can become aerobic district due to evaporation of water or seepage, and then loses it and promote the function of denitrification, so, biological delaying basin cannot effectively be removed the nitric nitrogen in second rainfall initial stage excretion runoff.
Utility model content
The weak point of depositing for this area, the purpose of this utility model is to propose a kind of biological delaying basin that strengthens nitrogen removal effect in storm runoff.
The technical scheme that realizes the utility model object is:
Strengthen a biological delaying basin for nitrogen removal effect in storm runoff, comprise main body, anti-filter backflow annex, filler and herbaceous plant;
Described main body is round table-like pit, fills filler in pit, and described filler comprises sandy soil layer, geotextile and the gravel bed laid from top to bottom;
Described anti-filter backflow annex comprises water shoot, tank, anti-filter return line; Described tank is arranged on outside main body, is connected main body by water shoot with anti-filter return line, and the entrance that described water shoot connects pit is positioned at described gravel bed top, and the entrance that described anti-filter return line connects pit is positioned at pit bottom; In described anti-filter return line, from tank to pit, be filled with successively fine sand, geotextile, coarse sand, geotextile and gravel; Water in tank can enter by anti-filter return line the oxygen-starved area of delaying basin main body, so just can ensure before oxygen-starved area is full by water storage, the lasting denitrification in the oxygen-starved area of delaying basin main body do not have water and drains by water shoot, so can reduce the nitrate nitrogen content of water shoot excretion runoff to greatest extent.
The described filler top herbaceous plant of planting.
Preferably, described main body is that upper base is greater than the round table-like pit of going to the bottom.
Preferably, described filler packing height is apart from described pit top 10～20cm.
Wherein, described herbaceous plant is damp tolerant plant, and the herbaceous plant in its border of being born for adaptation water rises, claims again moisture loving plant.This class plant comprises reed genus, millet genus, primula, Hosta, Astilbe, the orchid family, Gesneriaceae, Bromelia family, Marantaceae and aroid.Be preferably local indigenous plant of the present utility model is set.For example Beijing area, can select one or more in Nan Di, switchgrass, Pink Reineckea Herb, short-tube lycoris, green onion orchid, the tuber of dwarf lilyturf, iris, jade hairpin, tawny daylily.
The beneficial effects of the utility model are:
(1) biological delaying basin of the present utility model has increased tank, has increased substantially the ratio of retaining to rainfall Initial Runoff, has reduced the pollution load of rainfall runoff;
(2) biological delaying basin of the present utility model has increased anti-filter backflow annex, thereby has ensured that delaying basin main body oxygen-starved area is in anoxic condition, has improved the removal effect to nitric nitrogen in excretion runoff.
Brief description of the drawings
Fig. 1 is the biological delaying basin structure iron of the utility model.
In figure, 1 is sandy soil, and 2 is geotextile; 3 is gravel; 4 is herbaceous plant; 5 is biological delaying basin main body; 6 is anti-filter return line; 7 is water shoot; 8 is tank; 9 is fine sand; 10 is coarse sand.
Embodiment
Following examples are used for illustrating the present invention, but are not used for limiting the scope of the invention.
In description of the invention, it should be noted that, term " " center ", " longitudinally ", " laterally ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", orientation or the position relationship of instructions such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of device or the element of instruction or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.
Embodiment 1:
As shown in Figure 1, the biological delaying basin of nitrogen removal effect in enhancing storm runoff of the present utility model, is made up of rise be born herbaceous plant 4 parts in border of delaying basin main body, anti-filter backflow annex, filler and adaptation water.Specifically describe as follows:
(1) the utility model strengthens the main body 5 of the biological delaying basin of nitrogen removal effect in storm runoff
The main body 5 that the utility model strengthens the biological delaying basin of nitrogen removal effect in storm runoff is inverted round stage shape pit, and this pit depth is 60～100cm, and near coal-mine diameter is 100～150cm.Body surfaces, lower than ground 10～15cm, is sandy soil 1, geotextile 2 and 3 three layers of filler of gravel of laying from top to bottom in pit;
Main body 5 oxygen-starved areas, bottom are connected with anti-filter backflow annex.The entrance that wherein water shoot 7 connects pit is positioned at gravel bed top, and the entrance that anti-filter return line 6 connects pit is positioned at pit bottom.
(2) the utility model strengthens the anti-filter backflow annex of the biological delaying basin of nitrogen removal effect in storm runoff
The utility model strengthens the anti-filter backflow annex of the biological delaying basin of nitrogen removal effect in storm runoff, is made up of water shoot 7, tank 8 and anti-filter return line 6.Anti-filter return line 6 inside to delaying basin main body 5, are filled fine sand 9, geotechnological cloth 2, rough sand 10, geotechnological cloth 2 and gravel 3 from tank 8 successively.
(3) the adaptation water that the utility model strengthens the biological delaying basin of nitrogen removal effect in the storm runoff herbaceous plant 4 in border of being born of rising
Rise the be born herbaceous plant 4 in border of the adaptation water that the utility model strengthens the biological delaying basin of nitrogen removal effect in storm runoff is local perennial indigenous plant kind.For Beijing area, can select one or more in Nan Di, switchgrass, Pink Reineckea Herb, short-tube lycoris, green onion orchid, the tuber of dwarf lilyturf, iris, jade hairpin, tawny daylily.
Above embodiment is described the preferred embodiment of the present invention; not scope of the present invention is limited; design under the prerequisite of spirit not departing from the present invention; various modification and improvement that the common engineering technical personnel in this area make technical scheme of the present invention, all should fall in the definite protection domain of claims of the present invention.
Claims (4)
1. a biological delaying basin that strengthens nitrogen removal effect in storm runoff, is characterized in that, comprises main body, anti-filter backflow annex, filler and herbaceous plant;
Described main body is round table-like pit, fills filler in pit, and described filler comprises sandy soil layer, geotextile and the gravel bed laid from top to bottom;
Described anti-filter backflow annex comprises water shoot, tank, anti-filter return line; Described tank is arranged on outside main body, is connected main body by water shoot with anti-filter return line, and the entrance that described water shoot connects pit is positioned at described gravel bed top, and the entrance that described anti-filter return line connects pit is positioned at pit bottom; In described anti-filter return line, from tank to pit, be filled with successively fine sand, geotextile, coarse sand, geotextile and gravel;
The described filler top herbaceous plant of planting.
2. biological delaying basin according to claim 1, is characterized in that, described main body is that upper base is greater than the round table-like pit of going to the bottom.
3. biological delaying basin according to claim 1 and 2, is characterized in that, described filler packing height is apart from described pit top 10～20cm.
4. biological delaying basin according to claim 1 and 2, is characterized in that, the indigenous plant that described herbaceous plant is moisture-proof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420025661.5U CN203700035U (en) | 2014-01-15 | 2014-01-15 | Biological detention tank for enhancing removal effect of nitrogen in storm runoff |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420025661.5U CN203700035U (en) | 2014-01-15 | 2014-01-15 | Biological detention tank for enhancing removal effect of nitrogen in storm runoff |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203700035U true CN203700035U (en) | 2014-07-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420025661.5U Expired - Fee Related CN203700035U (en) | 2014-01-15 | 2014-01-15 | Biological detention tank for enhancing removal effect of nitrogen in storm runoff |
Country Status (1)
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|---|---|
| CN (1) | CN203700035U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104090088A (en) * | 2014-07-25 | 2014-10-08 | 内蒙古工业大学 | Plant retention element experiment device for water quantity balance simulation control |
| CN104876335A (en) * | 2015-06-01 | 2015-09-02 | 北京建筑大学 | Two-phase bioretention pond with synchronous phosphorous and nitrogen removal function and construction method thereof |
| CN105525648A (en) * | 2016-01-20 | 2016-04-27 | 山东省水利科学研究院 | Water and soil conservation method capable of combining wells and channels used for plain areas |
| CN105621622A (en) * | 2016-04-01 | 2016-06-01 | 中北大学 | Double-layer filler bioretention device capable of efficient denitrification and dephosphorization |
| CN105900730A (en) * | 2016-05-25 | 2016-08-31 | 镇江市给排水管理处 | Bioretention landscape plant growth medium and preparation method and using method thereof |
| CN107265630A (en) * | 2017-06-27 | 2017-10-20 | 河海大学 | A kind of two-way seepage flow biological delaying basin of internal retaining post |
| CN111139890A (en) * | 2019-12-30 | 2020-05-12 | 上海洗霸科技股份有限公司 | Building water supply and drainage resource recycling process |
-
2014
- 2014-01-15 CN CN201420025661.5U patent/CN203700035U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104090088A (en) * | 2014-07-25 | 2014-10-08 | 内蒙古工业大学 | Plant retention element experiment device for water quantity balance simulation control |
| CN104090088B (en) * | 2014-07-25 | 2016-06-22 | 内蒙古工业大学 | The plant that the simulation of a kind of water balance controls is detained unit's experimental provision |
| CN104876335A (en) * | 2015-06-01 | 2015-09-02 | 北京建筑大学 | Two-phase bioretention pond with synchronous phosphorous and nitrogen removal function and construction method thereof |
| CN105525648A (en) * | 2016-01-20 | 2016-04-27 | 山东省水利科学研究院 | Water and soil conservation method capable of combining wells and channels used for plain areas |
| CN105621622A (en) * | 2016-04-01 | 2016-06-01 | 中北大学 | Double-layer filler bioretention device capable of efficient denitrification and dephosphorization |
| CN105900730A (en) * | 2016-05-25 | 2016-08-31 | 镇江市给排水管理处 | Bioretention landscape plant growth medium and preparation method and using method thereof |
| CN105900730B (en) * | 2016-05-25 | 2019-04-16 | 镇江市给排水管理处 | Biology is detained landscape plant somatomedin and preparation method thereof and application method |
| CN107265630A (en) * | 2017-06-27 | 2017-10-20 | 河海大学 | A kind of two-way seepage flow biological delaying basin of internal retaining post |
| CN107265630B (en) * | 2017-06-27 | 2020-09-18 | 河海大学 | Two-way seepage bioretention pond of inside water storage post |
| CN111139890A (en) * | 2019-12-30 | 2020-05-12 | 上海洗霸科技股份有限公司 | Building water supply and drainage resource recycling process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20150115 |
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| EXPY | Termination of patent right or utility model |