CN211497306U - Deep bed denitrification filter - Google Patents
Deep bed denitrification filter Download PDFInfo
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- CN211497306U CN211497306U CN201922153506.7U CN201922153506U CN211497306U CN 211497306 U CN211497306 U CN 211497306U CN 201922153506 U CN201922153506 U CN 201922153506U CN 211497306 U CN211497306 U CN 211497306U
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Abstract
The application provides a deep bed denitrification filtering pond belongs to the multi-stage treatment technical field of water, sewage, waste water. Including inlet tube, cell body and water gathering pipe, the cell body is including setting up in the overflow tank of cell body both sides and the filtering area who is located the middle part, overflow tank and inlet tube intercommunication, filtering area top-down includes anti-nitration layer, supporting layer, filter brick layer and concrete layer in proper order, sets up the water catch bowl in the concrete layer, and water gathering pipe one end is arranged in the water catch bowl, and the other end passes concrete layer and outwards extends to next process. The device is applied to sewage and wastewater treatment, and has the advantages of small occupied space, good denitrification efficiency and back washing effect and the like.
Description
Technical Field
The application relates to a deep bed denitrification filter tank, which belongs to the technical field of multi-stage treatment of water, sewage and wastewater.
Background
The denitrification deep bed filter belongs to one of advanced treatment and filtration processes in sewage treatment, has centralized functions and flexible operation, and can play a role in intercepting suspended matters (SS) by physical filtration, removing Total Phosphorus (TP) by chemical micro-flocculation, removing Total Nitrogen (TN) by biological denitrification and the like.
The denitrification deep bed filter commonly used at present has the following defects:
(1) generally, variable liquid level control is adopted, the water level of inlet water is positioned in a filter tank layer and rises along with the increase of a water head, so that the dissolved oxygen of the just-started drop water is high, the operation cost is high, and a filter material adopts quartz sand or ceramsite to continuously intercept and adsorb suspended matters and a large amount of denitrifying bacteria in the outlet water of a biochemical treatment process so as to achieve the effects of filtration and denitrification;
(2) the existing denitrification deep bed filter usually depends on sensory liquid level elevation or artificially sets a backwashing period, and the backwashing mostly adopts a bottom-to-top air-water backwashing mode, so that the backwashing period is not accurately controlled, energy waste or water quality does not reach the standard easily, drop water oxygenation influences the denitrification function, a filter layer is easy to block, the backwashing effect is poor, and the total nitrogen of effluent does not reach the standard or the stability is not enough;
(3) the traditional denitrification filter tank needs to be matched with a plurality of facilities and equipment, such as equipment rooms, clean water tanks, waste water pipes and other facilities, and clean water pumps, submersible sewage pumps, gas generating devices and other equipment, so that the denitrification filter tank system is complex in operation, large in occupied area, high in operation and maintenance cost and the like.
SUMMERY OF THE UTILITY MODEL
In view of this, the application provides a deep bed denitrification filter, and this filter has not only realized the denitrification of conventional deep bed filter and filtering action, and occupation of land space is little to denitrification efficiency and back flush effect have effectively been improved.
Specifically, the method is realized through the following scheme:
deep bed denitrification filtering pond, including inlet tube, cell body and water gathering pipe, the cell body is including setting up in the overflow pond of cell body both sides and the filtering area who is located the middle part, overflow pond and inlet tube intercommunication, filtering area top-down includes denitrification layer, supporting layer, filter brick layer and concrete layer in proper order, sets up the water catch bowl in the concrete layer, and water gathering pipe one end is arranged in the water catch bowl, and the other end passes the concrete layer and outwards extends to next process.
In the deep bed denitrification filter tank, primary filtration is formed between a water inlet pipe and an overflow tank, primary coarse filtration is completed by means of an overflow effect, then overflowed water enters the middle part of the tank body, denitrification reaction is firstly carried out through a denitrification layer in a filtration area in the middle part, nitrate nitrogen is converted into nitrogen while secondary filtration is completed, TN in sewage is removed, a bearing layer is lifted up and down to complete third filtration, then fourth filtration is completed through a filter brick layer and filter brick effect, and finally final filtration is completed in a concrete layer; when the backwashing is needed, the water gathering pipe is pressed, the water body reversely flows back to the water collecting tank, and the backwashing is carried out on the filtering area through the flowing gap. The process carries out denitrification reaction and filtration on the water body to be treated, and the treated water body is gathered to be used as backwashing water.
On the basis of the scheme, further research is carried out on the water supply process, and a preferable scheme is determined as follows: the pipeline of the water inlet pipe is provided with a carbon source adding area, the carbon source adding area is provided with a medicament adding port and a waste water pipe, and more preferably, the communicating part of the water inlet pipe and the overflow tank is provided with a water inlet hole. The carbon source adding area is arranged to play a role in standing, before the carbon source is fed into the overflow tank, the water body is pretreated, methanol or sodium acetate is added to serve as a carbon source, and the agents are mixed and fully contacted with the water body to be treated in the carbon source adding area; whereas backwash water can be discharged through a waste pipe.
On the basis of the scheme, further research is carried out on the overflow process, and a preferable scheme is determined as follows: the overflow tank is provided with an overflow hole, and the overflow hole is positioned on the wall of the overflow tank. The arrangement of the overflow holes not only assists the overflow process to be carried out smoothly, but also plays a certain role in filtering, and reduces the treatment pressure of the next procedure.
On the basis of the scheme, further research is carried out on the process of the water collecting pipe, and a preferable scheme is determined as follows: the water collecting pipe comprises a near water pipe section, a transition pipe section and a far water pipe section, the near water pipe section is connected to the water collecting tank, one end of the far water pipe section is connected to a next procedure, the other end of the far water pipe section is communicated with the near water pipe section through the transition pipe section, and the pipe diameter of the near water pipe section is smaller than that of the far water pipe section. The water collecting pipe is used as a pipe with two functions of a water outlet pipe and a backwashing pipe, when the water collecting pipe is used as the water outlet pipe, extra pressure is not needed, a structure with a small inner end and a large outer end forms a suction force larger than that of the inner side on the outer side, and the water body is guided to be discharged from the water collecting tank; when the pipe is used as a back washing pipe, water is pressed in by external pressure and released again through a section of narrow pipe (namely a section close to the water pipe), so that larger impact force can be generated, and the impact and washing effects can be improved.
Based on the scheme, further research is carried out on a denitrification layer, and a preferable scheme is determined as follows: the denitrification layer is a natural sea sand layer or a fine sand layer. The denitrification layer is used as the first channel of the filtering area and the water body to be treated, the denitrification effect is generated firstly, then the filtering is carried out to the maximum extent, the natural sea sand or fine sand is used as the denitrification layer, microorganisms capable of carrying out denitrification reaction are attached to the surface of the natural sea sand or the fine sand, and when the water to be treated passes through, the denitrification effect is completed in the filtering process.
On the basis of the scheme, further research is carried out on the supporting layer, and a preferable scheme is determined as follows: the bearing layer is composed of cobblestones. The cobblestone structure has satisfied the effect of bearing, under the prerequisite that does not hinder water flow, plays filterable effect.
On the basis of the scheme, further research is carried out on the water collecting tank, and a preferable scheme is determined as follows: the support is arranged in the water collecting tank, the upper end of the support is positioned in the filter brick layer, the lower end of the support is fixed with the concrete layer or the bottom of the pool body, and one end of the water collecting pipe, which is positioned in the water collecting tank, is fixed by the support. The arrangement of the bracket ensures that the water collecting tank has a fixed space and is convenient for the installation of the water collecting pipe.
Drawings
FIG. 1 is a simplified top view of the present application;
fig. 2 is a cross-sectional view of the present application.
Reference numbers in the figures: A. a tank body; B. a filtration zone; 1. a water inlet pipe; 11. a water inlet hole; 12. a carbon source adding area; 13. a waste pipe; 2. an overflow tank; 21. an overflow aperture; 3. a denitrification layer; 4. a support layer; 5. a brick filtering layer; 6. a concrete layer; 7. a water collection tank; 71. a support; 8. a water collecting pipe; 81. a near water pipe section; 82. a transition duct section; 83. a far water pipe section; 831. a water outlet end; 9. and (5) emptying a pipe.
Detailed Description
This embodiment deep bed denitrification filtering pond, combine figure 1, including inlet tube 1, cell body A and water gathering pipe 8, cell body A is including setting up in the overflow pond 2 of cell body A both sides and the filtering area B who is located the middle part, overflow pond 2 and inlet tube 1 intercommunication, combine figure 2, filtering area B top-down includes denitrification layer 3 in proper order, support layer 4, filter brick layer 5 and concrete layer 6, set up water catch bowl 7 in the concrete layer 6, water gathering pipe 8 one end is located water catch bowl 7, the other end level passes concrete layer 6 and outwards extends to next process.
According to the deep-bed denitrification filter tank, primary filtration is formed between a water inlet pipe 1 and an overflow tank 2, primary coarse filtration is completed by means of an overflow effect, then overflowed water enters a filtration area B in the middle of a tank body A, denitrification reaction is performed in the filtration area B through a denitrification layer 3, a second filtration is completed, meanwhile, nitrate nitrogen is converted into nitrogen, and TN in sewage is removed; the supporting layer 4 is lifted up and down to finish the third filtration; then, the fourth filtration is completed simultaneously through the filter brick effect of the filter brick layer 5; finally, the last filtering is finished in the concrete layer 6, in the process, the supporting layer 4 and the filter brick layer 5 both realize the supporting function, the supporting function provides a flow gap for the water body, and the flow gaps finally collect the water flow to the water collecting tank 7 and discharge the water flow through the water collecting pipe 8; when the backwashing is needed, the water collecting pipe 8 is pressurized, the water body reversely flows back to the water collecting tank 7, and the filtering area B is backwashed through the flowing gap. The process carries out multi-channel reaction and filtration on the water body to be treated, and the treated water body is gathered to be used as backwashing water.
On the basis of the scheme, the method also provides an alternative scheme: referring to fig. 2, a carbon source adding area 12 is arranged on the pipeline of the water inlet pipe 1, a medicament adding port (not shown) and a wastewater pipe 13 are arranged on the carbon source adding area 12, and more preferably, a water inlet hole 11 is arranged at the communication position of the water inlet pipe 1 and the overflow tank 2. And a carbon source adding area 12 is arranged, methanol or sodium acetate is added into the water body as a carbon source before being fed into the overflow tank 2, the agents are mixed and fully contacted in the carbon source adding area 12, and back washing water is directly discharged through a waste water pipe 13.
On the basis of the scheme, the method also provides an alternative scheme: referring to fig. 2, the overflow tank 2 is provided with overflow holes 21, and the overflow holes 21 are located on the tank wall of the overflow tank 2. The arrangement of the overflow holes 21 not only assists the smooth operation of the overflow process, but also plays a certain role in filtering, and reduces the processing pressure of the next procedure.
On the basis of the scheme, the method also provides an alternative scheme: referring to fig. 2, the water collecting pipe 8 includes a near water pipe section 81, a transition pipe section 82 and a far water pipe section 83, the near water pipe section 81 is connected to the water collecting tank 7, one end of the far water pipe section 83 is connected to the next process (the end may also be referred to as a water outlet end 831), the other end is communicated with the near water pipe section 81 through the transition pipe section 82, and the pipe diameter of the near water pipe section 81 is smaller than that of the far water pipe section 83. The water collecting pipe 8 is used as a pipe with two functions of a water outlet pipe and a backwashing pipe, when the water collecting pipe is used as the water outlet pipe, extra pressure is not needed, a structure with a small inner end and a large outer end forms a suction force larger than that of the inner side on the outer side, and the water body is guided to be discharged from the water collecting tank 7; when the pipe is used as a back washing pipe, water is pressed in by external pressure and released again through a section of narrow pipe (namely a section close to the water pipe), so that larger impact force can be generated, and the impact and washing effects can be improved; the water collecting pipe 8 can also be matched with an emptying pipe 9 for matching action.
On the basis of the scheme, the method also provides an alternative scheme: referring to fig. 2, the denitrification layer 3 is a natural sea sand layer or a fine sand layer containing microorganisms. The denitrification layer 3 is used as the first channel of the water body to be treated in the filtering area B, the denitrification effect is generated firstly, then the filtering is carried out to the maximum extent, the natural sea sand or fine sand attached with microorganisms is used as the denitrification layer 3, the microorganisms can participate in the denitrification reaction, and the denitrification effect is completed in the filtering.
On the basis of the scheme, the method also provides an alternative scheme: with reference to fig. 2, the bearing layer 4 is made of cobblestones. The cobblestone structure has satisfied the effect of bearing, under the prerequisite that does not hinder water flow, plays filterable effect.
On the basis of the scheme, the method also provides an alternative scheme: referring to fig. 2, a support 71 is disposed in the water collection tank 7, the upper end of the support 71 is located in the filter brick layer 5, the lower end of the support 71 is fixed to the concrete layer 6 or the bottom of the tank body a, and the end of the water collection pipe 8 located in the water collection tank 7 is fixed by the support 71. The bracket 71 ensures that the water collecting tank 7 has a fixed space and facilitates the installation of the water collecting pipe 8.
Claims (8)
1. The deep bed denitrification filter tank is characterized in that: including inlet tube, cell body and water gathering pipe, the cell body is including setting up in the overflow pond of cell body both sides and the filtering area who is located the middle part, overflow pond and inlet tube intercommunication, filtering area top-down includes anti-nitration layer, supporting layer, filter brick layer and concrete layer in proper order, sets up the water catch bowl in the concrete layer, and water gathering pipe one end is arranged in the water catch bowl, and the other end passes concrete layer and outwards extends to next process.
2. The deep bed denitrification filter of claim 1, wherein: and a carbon source adding area is arranged on the pipeline of the water inlet pipe, and a medicament adding port and a waste water pipe are arranged on the carbon source adding area.
3. The deep bed denitrification filter of claim 2, wherein: and a water inlet hole is formed at the communication position of the water inlet pipe and the overflow tank.
4. The deep bed denitrification filter of claim 1, wherein: the overflow tank is provided with an overflow hole, and the overflow hole is positioned on the wall of the overflow tank.
5. The deep bed denitrification filter of claim 1, wherein: the water collecting pipe comprises a near water pipe section, a transition pipe section and a far water pipe section, the near water pipe section is connected to the water collecting tank, one end of the far water pipe section is connected to a next procedure, the other end of the far water pipe section is communicated with the near water pipe section through the transition pipe section, and the pipe diameter of the near water pipe section is smaller than that of the far water pipe section.
6. The deep bed denitrification filter of claim 1, wherein: the support is arranged in the water collecting tank, the upper end of the support is positioned in the filter brick layer, the lower end of the support is fixed with the concrete layer or the bottom of the pool body, and one end of the water collecting pipe, which is positioned in the water collecting tank, is fixed by the support.
7. The deep bed denitrification filter according to any of claims 1-6, wherein: the denitrification layer is a natural sea sand layer or a fine sand layer.
8. The deep bed denitrification filter according to any of claims 1-6, wherein: the bearing layer is composed of cobblestones.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922153506.7U CN211497306U (en) | 2019-12-04 | 2019-12-04 | Deep bed denitrification filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922153506.7U CN211497306U (en) | 2019-12-04 | 2019-12-04 | Deep bed denitrification filter |
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| Publication Number | Publication Date |
|---|---|
| CN211497306U true CN211497306U (en) | 2020-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922153506.7U Expired - Fee Related CN211497306U (en) | 2019-12-04 | 2019-12-04 | Deep bed denitrification filter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114873703A (en) * | 2022-06-18 | 2022-08-09 | 四川达沃斯生态环保科技股份有限公司 | Sewage coagulation stirring device, sewage denitrification and dephosphorization system and sewage denitrification and dephosphorization treatment process |
-
2019
- 2019-12-04 CN CN201922153506.7U patent/CN211497306U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114873703A (en) * | 2022-06-18 | 2022-08-09 | 四川达沃斯生态环保科技股份有限公司 | Sewage coagulation stirring device, sewage denitrification and dephosphorization system and sewage denitrification and dephosphorization treatment process |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200915 Termination date: 20211204 |