CN112661269B - Landscape high-load biological filter system and sewage treatment method - Google Patents
Landscape high-load biological filter system and sewage treatment method Download PDFInfo
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- CN112661269B CN112661269B CN202011254021.8A CN202011254021A CN112661269B CN 112661269 B CN112661269 B CN 112661269B CN 202011254021 A CN202011254021 A CN 202011254021A CN 112661269 B CN112661269 B CN 112661269B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 239
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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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- Biological Treatment Of Waste Water (AREA)
Abstract
The invention discloses a landscape high-load biofilter system and a sewage treatment method, which consists of a biofilter and a water distribution support structure; the biological filter comprises a water distribution planting area, a filtering area, a sludge bucket, a secondary water distribution area and a filler area, wherein the water distribution planting area, the filtering area and the sludge bucket are sequentially arranged from top to bottom, the filtering area and the sludge bucket are separated by a porous partition plate, the secondary water distribution area is positioned on the outer side of the filtering area, a plurality of through holes are formed in the side wall of the filtering area, the filler area is positioned below the secondary water distribution area, a bottom plate of the secondary water distribution area is a partition plate with holes, a water distribution support structure comprises a hollow support rod, the support rod is connected with an upper water distribution pipe assembly and a lower water distribution pipe assembly, the upper water distribution pipe assembly and the lower water distribution pipe assembly are communicated with the support rod, a screw with a valve is arranged in the hollow support rod, the water distribution support structure is arranged in the biological filter, the upper water distribution pipe assembly is positioned in the water distribution planting area, and the lower water distribution pipe assembly is positioned in the filler area. The invention can keep the long-term high-efficiency operation of the high-load biofilter.
Description
Technical Field
The invention belongs to the field of sewage treatment, and relates to a landscape high-load biofilter system and a sewage treatment method.
Background
The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.
A biological filter pool for purifying sewage is a biological treating structure made of broken stone or plastic filler, and features that the sewage is in contact with the microbial film growing on the surface of filler to purify the sewage. The common biofilter is also called as a low-load biofilter, has better sewage treatment effect and stable effluent quality. However, the common biological filter has the defects of large floor area, easy blockage, a plurality of flies, and influence on environmental sanitation. In contrast, researchers have proposed various types of high-load biofilters by using novel filter materials (fillers), so that the load factor is increased by several times compared with that of a common biofilter, and the volume of the biofilter is greatly reduced.
However, the inventor finds that the high-load biofilter has strict requirements on Suspended Solids (SS) in the actual use process, and the concentration of inlet water cannot be too high, otherwise filter material agglomeration and blockage are easily caused. In addition, the long-term operation of the biological filter is easy to cause filler blockage, how to reduce the risk of filler blockage, and the maintenance of the long-term high-efficiency operation of the high-load biological filter is a main problem in the current use of the biological filter.
Disclosure of Invention
In order to solve the defects of the prior art, the invention aims to provide a landscape high-load biofilter system and a sewage treatment method, which can keep long-term and high-efficiency operation of a high-load biofilter.
In order to achieve the purpose, the technical scheme of the invention is as follows:
on one hand, the landscape high-load biological filter system consists of a biological filter and a water distribution support structure;
the biological filter comprises a water distribution planting area, a filtering area, a sludge bucket, a secondary water distribution area and a packing area, wherein the water distribution planting area is used for planting plants, porous packing is filled in the filtering area and the packing area, the water distribution planting area, the filtering area and the sludge bucket are sequentially arranged from top to bottom, the filtering area and the sludge bucket are separated by a porous partition plate, the secondary water distribution area is positioned outside the filtering area, the side wall of the filtering area is provided with a plurality of through holes, the secondary water distribution area is communicated with the through holes of the filtering area, the packing area is positioned below the secondary water distribution area, the bottom plate of the secondary water distribution area is a partition plate with holes, and the packing area is communicated with the secondary water distribution area through the holes of the partition plate with the holes;
the water distribution support structure comprises a hollow support rod, the middle upper part of the support rod is connected with an upper water distribution pipe assembly, the middle lower part of the support rod is connected with a lower water distribution pipe assembly, the upper water distribution pipe assembly and the lower water distribution pipe assembly are both composed of a plurality of water distribution pipes, the upper water distribution pipe assembly and the lower water distribution pipe assembly are both communicated with the support rod, a screw rod with a valve flap is arranged in the hollow support rod, and a valve flap of the screw rod with the valve flap is matched with an inlet of the upper water distribution pipe assembly and an inlet of the lower water distribution pipe assembly;
the water distribution supporting structure is arranged in the biological filter tank, the upper water distribution pipe assembly is positioned in the water distribution planting area, and the lower water distribution pipe assembly is positioned in the filling area.
On the other hand, the method for treating sewage provides the landscape high-load biofilter system, the screw rod with the valve is adjusted to open the passage of the upper water distribution pipe assembly and close the passage of the lower water distribution pipe assembly, the sewage sequentially enters the water distribution planting area and the filtering area through the upper water distribution pipe assembly, the sewage is filtered in the filtering area, the filtered organic matters are absorbed by plants in the water distribution planting area, the filtered sewage enters the secondary water distribution area, and the sewage in the secondary water distribution area enters the packing area through secondary water distribution for microbial treatment.
In a third aspect, the method for treating sewage when the filtering area of the landscape high-load biofilter system is blocked adjusts the screw rod with the valve, so that the passage of the upper water distribution pipe assembly is closed, the passage of the lower water distribution pipe assembly is opened, and sewage directly enters the filling area through the lower water distribution pipe assembly for microbial treatment.
In a fourth aspect, the dredging method for the blocked filtering zone of the landscape high-load biological filter system comprises the sewage treatment method of the third aspect, the sludge in the sludge hopper is pumped out, the water distribution planting zone, the filtering zone and the secondary water distribution zone are in an emptying state, the blocked sludge and the biomembrane which are dried in the filtering zone fall off, then the screw with the valve flap is regulated, the passage of the upper water distribution pipe assembly is opened, the passage of the lower water distribution pipe assembly is closed, and the sewage flushes the blocked sludge and the biomembrane which are dried to the sludge hopper and is discharged through the sludge hopper.
The invention has the beneficial effects that:
(1) The invention arranges the water distribution planting area, the filtering area, the sludge bucket, the secondary water distribution area and the filling area, and adjusts the sewage by the screw with the valve clack, so that the sewage can realize the operation of 'the water distribution planting area → the filtering area → the secondary water distribution area → the filling area', thereby integrating the biological treatment and ecological treatment functions of the biological filter system, and removing pollutants mainly by means of the microbial action and plant uptake. In addition, the SS content of the sewage treated by the water distribution planting area, the filtering area and the secondary water distribution area is greatly reduced, thereby preventing the caking and the blockage of the filler in the filler area.
(2) The invention can switch the water distribution pipe component passages by controlling the screw rod with the valve clack, realizes the flow switching from the water distribution planting area → the filtering area → the secondary water distribution area → the filling area to the filter layer plugging period, and can realize the long-term high-efficiency operation of the biological filter by controlling the operation time of different flows.
(3) The filtering area of the biofilter system can be flushed by emptying sewage during the blockage period to realize the recovery of the performance of the filler.
(4) The inner sewage of the biological filter system of the invention flows without power, and water distribution and drainage are carried out by gravity, thus saving energy.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are included to illustrate an exemplary embodiment of the invention and not to limit the invention.
FIG. 1 is a schematic structural diagram of a landscape high-load biofilter system according to example 1 of the present invention;
the device comprises a biological filter 1, a water distribution supporting structure 3, a water collecting tank 4, a screw rod with a valve clack 5, an upper water distribution pipe assembly 6, a water distribution planting area 7, a filtering area 8, a porous partition plate 9, a sludge hopper 10, a secondary water distribution area 11, a sludge hopper discharge pipeline 12, a sludge hopper discharge valve 13, a porous partition plate 14, a lower water distribution pipe assembly 15, a packing area 16, a drain valve 17, a drain pipe 18, a water collecting tank discharge valve 19 and a water collecting tank discharge pipe.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In view of the difficulty of long-term and high-efficiency operation of the existing high-load biofilter, the invention provides a landscape high-load biofilter system and a sewage treatment method.
The invention provides a landscape high-load biofilter system, which consists of a biofilter and a water distribution support structure, wherein the biofilter is provided with a water distribution inlet and a water distribution outlet;
the biological filter comprises a water distribution planting area, a filtering area, a sludge bucket, a secondary water distribution area and a packing area, wherein the water distribution planting area is used for planting plants, porous packing is filled in the filtering area and the packing area, the water distribution planting area, the filtering area and the sludge bucket are sequentially arranged from top to bottom, the filtering area and the sludge bucket are separated by a porous partition plate, the secondary water distribution area is positioned outside the filtering area, the side wall of the filtering area is provided with a plurality of through holes, the secondary water distribution area is communicated with the through holes of the filtering area, the packing area is positioned below the secondary water distribution area, the bottom plate of the secondary water distribution area is a partition plate with holes, and the packing area is communicated with the secondary water distribution area through the holes of the partition plate with the holes;
the water distribution support structure comprises a hollow support rod, the middle upper part of the support rod is connected with an upper water distribution pipe assembly, the middle lower part of the support rod is connected with a lower water distribution pipe assembly, the upper water distribution pipe assembly and the lower water distribution pipe assembly are both composed of a plurality of water distribution pipes, the upper water distribution pipe assembly and the lower water distribution pipe assembly are both communicated with the support rod, a screw rod with a valve flap is arranged in the hollow support rod, and a valve flap of the screw rod with the valve flap is matched with an inlet of the upper water distribution pipe assembly and an inlet of the lower water distribution pipe assembly;
the water distribution supporting structure is arranged in the biological filter tank, the upper water distribution pipe assembly is positioned in the water distribution planting area, and the lower water distribution pipe assembly is positioned in the filling area.
In some embodiments of this embodiment, the filtration zone is rounded. So that the sewage can enter the secondary water distribution area from the filtering area more easily.
In some embodiments of this embodiment, the sludge hopper is inverted frustum shaped. The system can be made easier to collect sludge.
In some embodiments of the embodiment, the water distribution planting area, the filtering area and the sludge bucket are all arranged in the inverted round platform-shaped cylinder.
In some examples of the embodiment, the bottom of the biological filter is provided with a water collecting tank. Used for collecting the treated sewage.
In one or more embodiments, the catch basin is provided with a catch basin mud pipe and a drain pipe, the mud outlet of the catch basin is located on the side wall of the catch basin bottom, and the drain outlet of the catch basin is located on the side wall of the catch basin upper.
In some examples of this embodiment, the water distribution planting area is filled with a filler.
In one or more embodiments, the particle size of the filler in the water distribution planting area is 40-70 mm.
In some examples of this embodiment, the porous filler of the filtration zone has a particle size of 40 to 70mm.
In some examples of this embodiment, the porous filler of the filler zone has a particle size of 70 to 100mm.
In another embodiment of the invention, a sewage treatment method is provided, wherein the landscape high-load biofilter system is provided, the screw with the valve clack is adjusted to open the passage of the upper water distribution pipe assembly and close the passage of the lower water distribution pipe assembly, sewage sequentially enters the water distribution planting area and the filtering area through the upper water distribution pipe assembly, the sewage is filtered in the filtering area, filtered organic matters are absorbed by plants in the water distribution planting area, the filtered sewage enters the secondary water distribution area, and the sewage in the secondary water distribution area enters the packing area through secondary water distribution for microbial treatment.
According to the third embodiment of the invention, the method for treating sewage when the filtering area of the landscape high-load biofilter system is blocked is provided, the screw with the valve is adjusted, so that the passage of the upper water distribution pipe assembly is closed, the passage of the lower water distribution pipe assembly is opened, and the sewage directly enters the filling area through the lower water distribution pipe assembly to be subjected to microbial treatment.
The fourth embodiment of the invention provides a dredging method when the filtering area of the landscape high-load biofilter system is blocked, which comprises the sewage treatment method of the third embodiment, the sludge in the sludge hopper is pumped out, the water distribution planting area, the filtering area and the secondary water distribution area are in an emptying state, the blocked sludge and the biomembrane which are dried in the filtering area fall off, then the screw with the valve flap is regulated, the passage of the upper water distribution pipe assembly is opened, the passage of the lower water distribution pipe assembly is closed, and the sewage flushes the blocked sludge and the biomembrane which are dried to the sludge hopper and is discharged through the sludge hopper.
The biological filter principle of the invention is as follows:
the biological filter is a biological membrane treatment process: namely, a biological film is formed by organisms attached to the filler, and after the sewage is contacted with the biological film, pollutants are absorbed and converted by microorganisms, so that the sewage is purified.
Growth and action conditions of microorganisms in the operating period of the biological filter:
at the initial stage of operation of the biological filter, oxygen in sewage enters the filter along with the water distribution pipe, and meanwhile, the water distribution layer and the plant planting layer are in contact with air, so that certain oxygen can be conserved, and the root system of the plant can also transport partial oxygen, so that an aerobic layer is formed on the upper part of the biological filter, and organic matters in the sewage are decomposed by utilizing the action of aerobic microorganisms, and meanwhile, ammonia nitrogen in the sewage is converted into nitrate nitrogen. Oxygen in the sewage enters the next link after being utilized, at the moment, the dissolved oxygen content in the sewage is lower, the growth of anoxic or anaerobic microorganisms is facilitated, the anoxic or anaerobic microorganisms convert nitrate nitrogen generated in the previous link into nitrogen, and the energy is provided by organic matters in the water due to the fact that the growth and the propagation of the anoxic microorganisms need energy.
Growth and action conditions of microorganisms in the blockage period of the filtering area of the biological filter are as follows:
in the blockage period of the biological filter, oxygen in the sewage enters the filter material layer along with the water distribution pipe, an aerobic environment is formed at the upper part of the filter material layer, the organic matters in the sewage are decomposed by utilizing the action of aerobic microorganisms, and meanwhile, ammonia nitrogen in the sewage is converted into nitrate nitrogen. The lower dissolved oxygen content is lower, thus being beneficial to the growth of anoxic or anaerobic microorganisms which convert nitrate nitrogen produced in the previous link into nitrogen. In addition, the air-drained water distribution planting area, the filtering area and the secondary water distribution area can allow oxygen in the air to enter, and when water enters next time, the oxygen in the air is contacted with sewage to form an aerobic area, and the growth of aerobic microorganisms is utilized.
In order to make the technical solutions of the present invention more clearly understood by those skilled in the art, the technical solutions of the present invention will be described in detail below with reference to specific embodiments.
Example 1
A landscape high-load biological filter system is shown in figure 1 and comprises a biological filter 1, a water distribution support structure 2 and a water collecting tank 3. The radius of the biological filter 1 is 600mm, the height is 1800mm, the diameter of the water distribution supporting structure 2 is 300mm, and the diameter of the water collecting tank 3 is 1900mm.
The biological filter 1 is divided into an upper part and a lower part, the upper part comprises a water distribution planting area 6, a filtering area 7, a sludge bucket 9 and a secondary water distribution area 10, and the lower part is a filling area 15. The water distribution planting area 6, the filtering area 7 and the sludge bucket 9 are sequentially arranged in a cylinder from top to bottom, the cylinder is of an inverted circular truncated cone shape, and the secondary water distribution area 10 is arranged between the cylinder and the side wall of the biological filter 1.
The lower part of the water distribution planting area 6 is filled with filler with the grain diameter of 40-70 mm. Plants are planted on the upper part of the water distribution planting area 6.
The water distribution planting area 6 and the filtering area 7 are not separated, the filtering area 7 is filled with porous filler, and the particle size of the filler is 40-70 mm. Circular holes with the diameter of 20mm and the hole distance of 50mm are uniformly distributed on the cylinder wall of the filtering area 7 for water passing.
The sludge hopper 9 is positioned at the lower part of the filtering area 7 and is used for storing suspended sludge settled by the inlet water. The filtering area 7 is connected with a sludge hopper 9 through a porous clapboard 8, and round holes with the diameter of 30mm and the hole distance of 50mm are uniformly distributed on the porous clapboard 8 for passing through the sludge. The sludge hopper 9 is connected with a sludge discharging pipeline 11 of the sludge hopper. The sludge bucket sludge discharge pipeline 11 is provided with a sludge bucket sludge discharge valve 12 for controlling the discharge of sludge in the sludge bucket 9. The sludge discharge port of the sludge bucket 9 is arranged on the side wall of the bottom of the sludge bucket 9, and can discharge sludge through pressure difference.
Round holes with the diameter of 20mm and the pitch of 50mm are uniformly distributed at the bottom of the secondary water distribution area 10 for passing water and are communicated with the lower filling area 15 through a partition plate 13 with holes.
The filler area 15 is filled with porous filler with the particle size of 70-100 mm.
The filler area 15 is connected with the water collecting tank 3 through round holes with the diameter of 20mm and the hole distance of 50mm uniformly distributed at the bottom.
The water collecting tank 3 is connected with a water discharging pipe 17 and a water collecting tank mud discharging pipe 19. The drain pipe 17 is provided with a drain valve 16. The sump mud pipe 19 is provided with a sump mud valve 18. The water outlet of the water collecting tank 3 is arranged on the side wall of the upper part, and the sludge outlet of the water collecting tank 3 is arranged on the side wall of the bottom part.
The water distribution supporting structure 2 is arranged in the biological filter 1, and comprises a hollow supporting rod, an upper water distribution pipe assembly 5 and a lower water distribution pipe assembly 14. The hollow support rod is vertically arranged and is positioned at the central axis of the biological filter 1. The upper water distribution pipe assembly 5 is arranged at the middle upper part of the hollow support rod. The upper water distribution pipe assembly 5 consists of 4 fixed water distribution pipes, and each fixed water distribution pipe is communicated with the hollow support rod. The upper water distribution pipe assembly 5 is positioned in the middle of the water distribution planting area 6. The lower water distribution pipe assembly 14 is installed at the middle lower portion of the hollow support rod. The lower water distribution pipe assembly 14 is composed of 4 fixed water distribution pipes, and each fixed water distribution pipe is communicated with the hollow support rod. The lower water distribution pipe assembly 14 is positioned above the packing area 15. A screw rod 4 with a valve clack is arranged in the hollow support rod, and the valve clack with the screw rod 4 is matched with an inlet of the upper water distribution pipe assembly 5 and an inlet of the lower water distribution pipe assembly 14.
The microorganism from the system is the original microorganism in the sewage, and a proper growth environment is created in the treatment process for the growth of the corresponding microorganism without additional addition.
The sewage is pretreated by means of oil separation, precipitation and the like, and then is lifted to the biological filter system through water head gravity flow or a water pump.
(1) Removal of pollutants in biological filter during normal operation
The screw rod 4 with the valve clack is rotated, so that the water passing channel of the upper water distribution pipe assembly 5 is opened, and the water passing channel of the lower water distribution pipe assembly 14 is closed. The sewage enters a biological filter system through an upper water distribution pipe component 5 connected with a water distribution supporting structure 2, a filtering area is filled with organic matters and SS with the grain size of 40-70 mm, large particles can be intercepted, plants are planted in a water distribution planting area 6, the organic matters can be removed through the absorption and conversion of the plants, after the sewage is treated by the filtering area, the sewage enters a secondary water distribution area 10 through water passing round holes outside the filtering area 7, the sludge is deposited and collected in a sludge hopper 9, the sewage flowing through the secondary water distribution area 10 enters a packing area 15 after being distributed with water by a perforated partition plate 13, and the sewage enters a water collecting tank after being treated by the packing area 15 and is discharged out of the system through a water discharge pipe 17. The main units of action for contaminant removal at this stage are: absorption and transformation of upper plants, entrapment of substrate, absorption and transformation of substrate microorganisms. The biological filter periodically discharges the fallen biological membrane and the precipitated sludge through a sludge bucket sludge discharge pipe 11 and a water collecting tank sludge discharge pipe 19 according to the actual use condition.
(2) Removal of pollutants in plugging period of filtering area of biological filter
When the filtering area 7 of the biological filter is blocked, sewage cannot pass through the upper water distribution pipe assembly 5, and the water passing channel of the upper water distribution pipe assembly 5 is closed and the water passing channel of the lower water distribution pipe assembly 14 is opened by rotating the screw rod 4 with the valve clack. The sewage enters the filler area through the lower water distribution pipe assembly 14 connected with the water distribution supporting structure 2, and the sewage is adsorbed and attached to the porous filler in the filler area 15 and is converted by microorganisms on the filler to remove organic substances.
(3) Restoration of blockage of filtering area of biological filter
After the biological filter operates for a period of time in a blocking period, the water distribution planting area 6, the filtering area 7 and the secondary water distribution area 10 are all in an emptying state, and in a drying state, the original blocking sludge and biomembranes in the filtering area fall off, the screw rod 4 with the valve clacks is rotated, the water passing channel of the upper water distribution pipe assembly 5 is opened, and the water passing channel of the lower water distribution pipe assembly 14 is closed. The sewage enters the ecological filter system through the upper water distribution pipe assembly 5, the dried sludge and the fallen biological membrane enter the sludge hopper 9 through sewage washing, and are discharged out of the system through the sludge hopper and sludge discharge pipe 11, and the filler performance is recovered.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (12)
1. A landscape high-load biological filter system is characterized by comprising a biological filter and a water distribution supporting structure;
the biological filter comprises a water distribution planting area, a filtering area, a sludge hopper, a secondary water distribution area and a packing area, wherein the water distribution planting area is used for planting plants, porous packing is filled in the filtering area and the packing area, the water distribution planting area, the filtering area and the sludge hopper are sequentially arranged from top to bottom, the filtering area is separated from the sludge hopper through a porous partition plate, the secondary water distribution area is positioned outside the filtering area, a plurality of through holes are formed in the side wall of the filtering area, the secondary water distribution area is communicated with the through holes of the filtering area, the packing area is positioned below the secondary water distribution area, a bottom plate of the secondary water distribution area is a partition plate with holes, and the packing area is communicated with the secondary water distribution area through the holes of the partition plate with the holes;
the filtering area is in an inverted circular truncated cone shape, so that sewage can enter the secondary water distribution area from the filtering area more easily;
the water distribution support structure comprises a hollow support rod, the middle upper part of the support rod is connected with an upper water distribution pipe assembly, the middle lower part of the support rod is connected with a lower water distribution pipe assembly, the upper water distribution pipe assembly and the lower water distribution pipe assembly are both composed of a plurality of water distribution pipes, the upper water distribution pipe assembly and the lower water distribution pipe assembly are both communicated with the support rod, a screw rod with a valve flap is arranged in the hollow support rod, and a valve flap of the screw rod with the valve flap is matched with an inlet of the upper water distribution pipe assembly and an inlet of the lower water distribution pipe assembly;
the water distribution supporting structure is arranged in the biological filter tank, the upper water distribution pipe assembly is positioned in the water distribution planting area, and the lower water distribution pipe assembly is positioned in the filling area.
2. The landscape high-load biofilter system according to claim 1, wherein said sludge hopper is in the shape of an inverted frustum.
3. The high-load biological filter system as recited in claim 1, wherein the water distribution planting area, the filtering area and the sludge bucket are all arranged in the inverted truncated cone-shaped cylinder.
4. The landscape high-load biofilter system according to claim 1, wherein a water collection sump is installed at the bottom of the biofilter.
5. The high-load biofilter system according to claim 4, wherein said sump is provided with sump sludge discharge pipes and discharge pipes, the sludge discharge outlet of the sump being located at the bottom side wall of the sump, and the discharge outlet of the sump being located at the upper side wall of the sump.
6. The landscape high-load biofilter system according to claim 1, wherein the water distribution planting area is filled with filler.
7. The landscape high-load biofilter system according to claim 6, wherein the filler particle size of the water distribution planting area is 40 to 70mm.
8. A landscape high-load biofilter system according to claim 1, wherein the porous filler in the filtration zone has a particle size of 40 to 70mm.
9. A landscape high-load biofilter system according to claim 1, wherein the particle size of the porous filler in the filler zone is 70 to 100mm.
10. A sewage treatment method is characterized in that the landscape high-load biofilter system according to any one of claims 1 to 9 is used, a screw rod with a valve clack is adjusted, a passage of an upper water distribution pipe assembly is opened, a passage of a lower water distribution pipe assembly is closed, sewage sequentially enters a water distribution planting area and a filtering area through the upper water distribution pipe assembly, the sewage is filtered in the filtering area, filtered organic matters are absorbed by plants in the water distribution planting area, the filtered sewage enters a secondary water distribution area, and the sewage in the secondary water distribution area enters a filler area through secondary water distribution for microbial treatment.
11. A sewage treatment method when a filter area of a landscape high-load biofilter system is blocked according to any one of claims 1 to 9, characterized in that a screw with a valve is adjusted to close a passage of an upper water distribution pipe assembly and open a passage of a lower water distribution pipe assembly, and sewage directly enters a filler area through the lower water distribution pipe assembly for microbial treatment.
12. The sewage treatment method according to claim 11, wherein the sludge in the sludge hopper is pumped out, the water distribution planting zone, the filtering zone and the secondary water distribution zone are in an emptying state, the dried blocked sludge and the biofilm in the filtering zone fall off, then the screw with the valve clack is adjusted, the passage of the upper water distribution pipe assembly is opened, the passage of the lower water distribution pipe assembly is closed, and the dried blocked sludge and the biofilm are flushed to the sludge hopper by the sewage and discharged through the sludge hopper.
Priority Applications (1)
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