CN209815900U - Backwashing filtering system of treatment device of multifunctional landscape water body - Google Patents
Backwashing filtering system of treatment device of multifunctional landscape water body Download PDFInfo
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- CN209815900U CN209815900U CN201920084342.4U CN201920084342U CN209815900U CN 209815900 U CN209815900 U CN 209815900U CN 201920084342 U CN201920084342 U CN 201920084342U CN 209815900 U CN209815900 U CN 209815900U
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Abstract
The utility model discloses a treatment device back flush filtration system of multi-functional landscape water body, including cell body, air supporting device, aeration biofiltration device, back flush water distributor and back flush gas distribution pipe, the cell body is equipped with air supporting functional area and aeration biofiltration district, the air supporting device is installed in the air supporting functional area, aeration biofiltration device installs in aeration biofiltration district, the bottom in air supporting functional area and the bottom intercommunication in aeration biofiltration district, be equipped with the backwash water district of intaking between the bottom of aeration biofiltration device and cell body, back flush water distributor and backwash water intake area intercommunication, back flush gas distribution pipe is fixed in aeration biofiltration device's lower extreme. Through returning the backwash water into the inlet tube and again carrying out air flotation, filtration treatment through micro-nano bubble, avoided backwash water to discharge extravagantly. The device has the advantages of low investment cost, short treatment period, simple operation, no secondary pollution and the like.
Description
Technical Field
The utility model relates to a water treatment facilities, in particular to back flush filtration system of treatment device of multi-functional landscape water body.
Background
The treatment of landscape water can be generally divided into physical, chemical, biological and ecological restoration methods. The treatment process of landscape water body pollution is successively developed from simple coagulating sedimentation and circulating filtration to the establishment of a perfect landscape water body ecological system and the improvement of the self-cleaning capacity of the water body to solve the pollution and the like. At present, the research and application are mostly physicochemical strengthening treatment and biological and natural ecological restoration methods. But the physicochemical strengthening treatment can bring secondary pollution to the water body, and the quality guarantee time of the water quality is short; the natural ecological restoration method has the defects of long restoration period, high later maintenance cost and the like. In addition, although the existing biological aerated filter has the advantages of strong impact load resistance, small occupied area, short treatment period, wide application range and the like, a plurality of problems still exist in the actual use process: 1) suspended matters in the sewage are trapped in the filter material layer, which easily causes the filter chamber to be blocked. 2) When aeration oxygenation is used, the resistance of the filter material can cause that sewage and oxygen can not be fully contacted, and oxygen supply is often insufficient. 3) The gas-water combined backwashing is frequent, the frequent washing not only damages the activity of the microbial membrane on the filter material, but also shortens the service life of the filter material and the filter tank, and increases the consumption of the backwashing water.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a low investment cost, processing cycle are short, the operation is simple, no secondary pollution's back flush filtration system of landscape water administers device.
According to the utility model discloses an aspect provides a back flush filtration system of treatment device of multi-functional landscape water body, including cell body, air supporting device, aeration biofiltration device, back flush water distributor and back flush gas distribution pipe, the cell body is equipped with air supporting functional area and aeration biofiltration district, the air supporting device is installed in the air supporting functional area, aeration biofiltration device installs in aeration biofiltration district, the bottom in air supporting functional area and the bottom intercommunication in aeration biofiltration district, it intakes the district to be equipped with backwash water between the bottom of aeration biofiltration device and cell body, back flush water distributor and backwash water intake the district intercommunication, back flush gas distribution pipe is fixed in aeration biofiltration device's lower extreme.
In some embodiments, the backwashing water filtering system of the multifunctional landscape water body treatment device further comprises a backwashing water collecting tank and a backwashing water outlet pipe, wherein the backwashing water collecting tank is connected with the top end of the aeration biological filtering area, and the backwashing water outlet pipe is connected with the bottom of the backwashing water collecting tank.
In some embodiments, the backwashing filtration system of the multifunctional landscape water body treatment device further comprises a water inlet pipe, a clear water outlet pipe and an overflow weir, wherein the water inlet pipe is connected with the air flotation functional area, the clear water area is arranged between the aeration biological filtration device and the top of the tank body, the overflow weir is installed at the upper part of the clear water area, the clear water outlet pipe is connected with the upper part of the overflow weir, and the backwashing water outlet pipe is connected with the water inlet pipe.
In some embodiments, the air floating device includes a nanometer micro-bubble generating device and a nanometer micro-bubble air distributing device, the nanometer micro-bubble air distributing device is installed in the air floating functional area and located at the lower part of the air floating functional area, and the nanometer micro-bubble generating device is connected with the nanometer micro-bubble air distributing device and can provide nanometer micro-bubbles to the nanometer micro-bubble air distributing device.
In some embodiments, the aeration biofiltration device comprises a bearing layer, a fixed packing layer, a controllable packing layer and an aeration gas distribution pipe, wherein the bearing layer is fixedly arranged at the lower part of the aeration biofiltration area, the fixed packing layer is fixed above the bearing layer, the controllable packing layer is movably arranged above the fixed packing layer, and the aeration gas distribution pipe is arranged between the bearing layer and the fixed packing layer.
In some embodiments, the backwashing filter system of the multifunctional landscape water body treatment device further comprises a movable baffle plate, wherein the movable baffle plate is arranged between the air floatation adjusting functional area and the aeration biological filtering area, and the movable baffle plate can block or adjust the liquid flow between the air floatation adjusting functional area and the aeration biological filtering area.
In some embodiments, the back-washing filtering system of the multifunctional landscape water body treatment device further comprises a deslagging device which is arranged at the upper end of the air-floating functional area.
In some embodiments, the slag removal device comprises a slag scraper mounted on top of the aerated biological filtration zone of the tank body and a slag discharge tank mounted on a side of the tank body opposite the slag scraper.
The utility model has the advantages that: the utility model is provided with an air floating device, and the micro SS and algae which can not be intercepted by the grating are removed by utilizing the nanometer microbubble principle, so that the load intercepted by the filter material can be reduced, the activity of the microbial membrane on the surface of the filter material is prolonged, the backwashing times are reduced, the waste and the power consumption of backwashing water caused by backwashing are reduced, and the service cycle of the filter tank is prolonged; the dissolved oxygen in the water is also increased, and the load of an aeration system is reduced; meanwhile, after micro SS and algae are removed, the risk of blocking the filter tank is reduced. A movable baffle is arranged between the air-floating functional area and the aeration biological filtering area, and the hydraulic retention time of the water body in the aeration biological filtering area is controlled by an automatic control system or manually adjusting the water flow rate of the air-floating functional area flowing into the aeration biological filtering area. The backwashing water contains intercepted suspended matters and aged and fallen microbial films, and the backwashing water is returned to the water inlet pipe to be subjected to air floatation and filtration treatment through micro-nano bubbles again, so that the waste of backwashing water discharge is avoided. The device has the advantages of low investment cost, short treatment period, simple operation, no secondary pollution and the like.
Drawings
Fig. 1 is a schematic structural view of a backwash filter system of a treatment device for a multifunctional landscape water body according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 schematically shows a backwash filter system of a multi-functional landscape water body treatment device according to an embodiment of the present invention.
Referring to fig. 1, the backwashing filtration system of the treatment device of the multifunctional landscape water body comprises a tank body 1, an air flotation device 2, an aeration biological filtration device 3, a backwashing water distribution pipe 4, a backwashing air distribution pipe 5, a backwashing water collection tank 6, a backwashing water outlet pipe 7, a movable baffle plate 8, a deslagging device 9, a water inlet pipe 14 and an overflow weir 16.
The aeration biological filtering device comprises a tank body 1 and a backwashing water inlet area 13, wherein the tank body 1 is provided with an air flotation functional area 11 and an aeration biological filtering area 12, an air flotation device 2 is arranged in the air flotation functional area 11, an aeration biological filtering device 3 is arranged in the aeration biological filtering area 12, the bottom of the air flotation functional area 11 is communicated with the bottom of the aeration biological filtering area 12, the backwashing water inlet area 13 is arranged between the aeration biological filtering device 3 and the bottom of the tank body 1, a backwashing water distribution pipe 4 is communicated with the backwashing water inlet area 13, and a backwashing gas distribution pipe 5 is fixed at the lower end of. The water inlet pipe 14 is connected with the air flotation functional area 11, a clear water area 17 is arranged between the aeration biological filtering device 3 and the top of the tank body 1, the overflow weir 16 is arranged at the upper part of the clear water area 17, the clear water outlet pipe 15 is connected with the upper part of the overflow weir 16, and the backwashing water outlet pipe 7 is connected with the water inlet pipe 14. The water inlet pipe 14, the clear water outlet pipe 15, the backwashing water distribution pipe 4, the backwashing gas distribution pipe 5 and the backwashing water outlet pipe 7 are all provided with control valves.
The movable baffle 8 is arranged between the air-floating adjusting functional area 11 and the aeration biological filtering area 12, and the movable baffle 5 can block or adjust the liquid flow between the air-floating functional area 11 and the aeration biological filtering area 12.
The air floating device 2 includes a nanometer micro-bubble generating device 21 and a nanometer micro-bubble air distributing device 22. The nanometer micro-bubble gas distribution device 22 is installed in the air-floating functional area 11 and located at the lower portion of the air-floating functional area 11, and the nanometer micro-bubble generation device 21 is connected with the nanometer micro-bubble gas distribution device 22 and can provide nanometer micro-bubbles to the nanometer micro-bubble gas distribution device 22.
The aeration biofiltration device 3 comprises a bearing layer 31, a fixed filler layer 32, a controllable filler layer 33 and an aeration gas distribution pipe 34. The supporting layer 31 can be filled with cobblestones, and the fixed filler layer 32 and the controllable filler layer 33 are filled with filter materials. The supporting layer 31 is fixedly arranged at the lower part of the aeration biological filtering area 12, and the fixed filler layer 32 is fixed above the supporting layer 31. The controllable packing layer 33 is movably arranged above the fixed packing layer 32, and the controllable packing layer 33 is connected with the top of the tank body 1 through a hanging chain 35.
The aeration air distribution pipe 34 is arranged between the supporting layer 31 and the fixed filler layer 32, and the aeration air distribution pipe 34 can adopt a single-hole membrane air diffuser. If the treated water body contains higher algae, SS and BOD, the whole device is mainly used for oxidation degradation and filtration, and the movable baffle 5 can be opened to communicate the air flotation functional area 11 and the aeration biological filtration functional area 11 for air flotation and filtration; if the water quality contains low SS and high TN, NH3-N, COD and BOD, the nano micro-bubble generating device can be closed and the movable baffle 8 can be closed, so that the whole device becomes an aerobic zone and an anaerobic zone, the oxidation degradation is carried out in the aerobic zone, and the denitrification reaction is carried out in the anaerobic zone. Two sets of different water treatment processes can be realized in the same device, and the device can be suitable for water treatment of different pollutants.
The deslagging device 9 is arranged at the upper end of the air floatation functional area 11. The deslagging device 9 comprises a slag scraper 91 and a slag discharge groove 92, the slag scraper 91 is mounted at the top of the aeration biological filtration zone 12 of the tank body 1, and the slag discharge groove 92 is mounted at one side of the tank body 1 and is opposite to the slag scraper 91.
The back washing water collecting tank 6 is connected with the top end of the aeration biological filtering area 12, and the back washing water outlet pipe 7 is connected with the bottom of the back washing water collecting tank 6. The backwashing gas distribution pipes 5 are provided with a plurality of pipes and are evenly distributed at the bottom of the supporting layer 31.
The utility model discloses the during operation passes through inlet tube 14 through landscape water and gets into air supporting functional area 11, utilizes nanometer microbubble to detach and increase dissolved oxygen with the suspended solid in the water. The principle of air flotation separation is that air and water are dissolved in water under certain pressure, the air and water are strived to be in a saturated state, then the formed pressure dissolved air water is released through decompression to generate a large number of micro bubbles which are fully contacted with suspended particles in the water, so that the suspended particles in the water are adhered to the bubbles and float upwards to the water surface along with the bubbles to form scum, and then the scum is removed by a deslagging device 9. The water treated by the air flotation functional zone 11 enters the biological aerated filter functional zone 12 from the bottom, passes through the supporting layer 31, the water entering the filter is uniform due to the resistance of the supporting layer 31, and the water body is further filtered through the supporting layer 31; is arranged on the supporting layer 31, and air is distributed through the supporting layer, so that the filter material is in an expansion state, and the dissolved oxygen in water is increased. The water body passes through the filter material layer, and because a large number of microbial membranes attached to the surface of the filter material layer are combined with dissolved oxygen in water to oxidize and degrade organic matters in the water, the sewage is adsorbed and filtered again by utilizing the porous structure of the filter material. The treated water passes through the clear water zone 17 and is discharged through the clear water outlet pipe 15 by the overflow weir 16. As the aeration biological filter filters sewage for a long time, a plurality of aged biological membranes and intercepted suspended matters exist in a filter material layer. The reverse back flushing of gas-water combination is needed to be regularly adopted to improve the activity of the biological membrane, the back flushing gas distribution pipe 5 and the back flushing water distribution pipe 4 can be matched to perform powerful flushing on the supporting layer 31, the fixed packing layer 32 and the controllable packing layer 33 in the aeration biological filtering device 3, so that the retained suspended matters and the aged and fallen microbial membranes on the packing are flushed out, flow into the back flushing water collecting tank 6 after flowing out from the clear water area, and then return to the water inlet pipe 14 from the back flushing water outlet pipe 7. The back washing water enters the air flotation functional area 11 from the water inlet pipe 14 to carry out air flotation treatment in the air flotation aeration biological filtering area 12, and then enters the aeration biological filtering area 12 to carry out filtering treatment, so that the waste of the back washing water and the environmental pollution are avoided.
What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.
Claims (8)
1. The utility model provides a back flush filtration system of treatment device of multi-functional landscape water body which characterized in that: including cell body (1), air supporting device (2), aeration biofiltration device (3), back flush water distributor (4) and back flush gas distribution pipe (5), cell body (1) is equipped with air supporting functional area (11) and aeration biofiltration district (12), air supporting device (2) are installed in air supporting functional area (11), aeration biofiltration device (3) are installed in aeration biofiltration district (12), the bottom of air supporting functional area (11) and the bottom intercommunication of aeration biofiltration district (12), it intakes district (13) to be equipped with the backwash water between the bottom of aeration biofiltration device (3) and cell body (1), back flush water distributor (4) and backwash water intake district (13) intercommunication, back flush gas distribution pipe (5) are fixed in the lower extreme of aeration biofiltration device (3).
2. The back-washing filtering system of the treatment device of the multifunctional landscape water body of claim 1, which is characterized in that: the biological filter is characterized by further comprising a backwashing water collecting tank (6) and a backwashing water outlet pipe (7), wherein the backwashing water collecting tank (6) is connected with the top end of the aeration biological filtering area (12), and the backwashing water outlet pipe (7) is connected with the bottom of the backwashing water collecting tank (6).
3. The back-washing filtering system of the treatment device of the multifunctional landscape water body as claimed in claim 2, which is characterized in that: still include inlet tube (14), clear water outlet pipe (15) and overflow weir (16), inlet tube (14) are connected with air supporting functional area (11), be equipped with clear water district (17) between the top of aeration biological filtration device (3) and cell body (1), install on the upper portion of clear water district (17) overflow weir (16), clear water outlet pipe (15) are connected with the upper portion of overflow weir (16), back flush outlet pipe (7) are connected with inlet tube (14).
4. The back-washing filtering system of the multi-functional landscape water body treatment device of claim 1, 2 or 3, which is characterized in that: air supporting device (2) include nanometer microbubble generating device (21) and nanometer microbubble gas distribution device (22), nanometer microbubble gas distribution device (22) are installed in air supporting functional area (11) and are located the lower part of air supporting functional area (11), nanometer microbubble generating device (21) are connected and can provide the nanometer microbubble to nanometer microbubble gas distribution device (22) with nanometer microbubble gas distribution device (22).
5. The back-washing filtering system of the multi-functional landscape water body treatment device of claim 1, 2 or 3, which is characterized in that: the aeration biofiltration device (3) comprises a bearing layer (31), a fixed packing layer (32), a controllable packing layer (33) and an aeration gas distribution pipe (34), wherein the bearing layer (31) is fixedly arranged at the lower part of the aeration biofiltration area (12), the fixed packing layer (32) is fixed above the bearing layer (31), the controllable packing layer (33) is movably arranged above the fixed packing layer (32), and the aeration gas distribution pipe (34) is arranged between the bearing layer (31) and the fixed packing layer (32).
6. The back-washing filtering system of the treatment device of the multifunctional landscape water body of claim 1, which is characterized in that: the device also comprises a movable baffle (8), wherein the movable baffle (8) is arranged between the air floatation adjusting functional area (11) and the aeration biological filtering area (12), and the movable baffle (8) can block or adjust the liquid flow between the air floatation adjusting functional area (11) and the aeration biological filtering area (12).
7. The back-washing filtering system of the treatment device of the multifunctional landscape water body of claim 1, which is characterized in that: the device is characterized by further comprising a deslagging device (9), wherein the deslagging device (9) is installed at the upper end of the air floatation functional area (11).
8. The back-washing filtering system of the treatment device of the multifunctional landscape water body of claim 7, which is characterized in that: the slag removing device (9) comprises a slag scraping machine (91) and a slag discharging groove (92), the slag scraping machine (91) is installed at the top of the aeration biological filtering area (12) of the tank body (1), and the slag discharging groove (92) is installed at one side of the tank body (1) and is opposite to the slag scraping machine (91).
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| CN201920084342.4U CN209815900U (en) | 2019-01-21 | 2019-01-21 | Backwashing filtering system of treatment device of multifunctional landscape water body |
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| CN201920084342.4U CN209815900U (en) | 2019-01-21 | 2019-01-21 | Backwashing filtering system of treatment device of multifunctional landscape water body |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114956463A (en) * | 2022-05-31 | 2022-08-30 | 天俱时工程科技集团有限公司 | Aeration biological filter for efficiently treating wastewater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114956463A (en) * | 2022-05-31 | 2022-08-30 | 天俱时工程科技集团有限公司 | Aeration biological filter for efficiently treating wastewater |
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