CN115536210A - Ecological filter medium, application thereof, low-energy-consumption sewage treatment method and device - Google Patents
Ecological filter medium, application thereof, low-energy-consumption sewage treatment method and device Download PDFInfo
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- CN115536210A CN115536210A CN202211001543.6A CN202211001543A CN115536210A CN 115536210 A CN115536210 A CN 115536210A CN 202211001543 A CN202211001543 A CN 202211001543A CN 115536210 A CN115536210 A CN 115536210A
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- 239000010865 sewage Substances 0.000 title claims abstract description 183
- 238000000034 method Methods 0.000 title claims abstract description 45
- 238000005265 energy consumption Methods 0.000 title claims abstract description 41
- 239000002689 soil Substances 0.000 claims abstract description 74
- 239000005416 organic matter Substances 0.000 claims abstract description 28
- 235000007164 Oryza sativa Nutrition 0.000 claims abstract description 24
- 239000000843 powder Substances 0.000 claims abstract description 24
- 235000009566 rice Nutrition 0.000 claims abstract description 24
- 241000196324 Embryophyta Species 0.000 claims abstract description 20
- 239000004576 sand Substances 0.000 claims abstract description 20
- 239000002956 ash Substances 0.000 claims abstract description 19
- 239000010881 fly ash Substances 0.000 claims abstract description 19
- 240000007594 Oryza sativa Species 0.000 claims abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 91
- 239000002245 particle Substances 0.000 claims description 35
- 238000012856 packing Methods 0.000 claims description 24
- 239000004575 stone Substances 0.000 claims description 21
- 241000894006 Bacteria Species 0.000 claims description 19
- 239000000919 ceramic Substances 0.000 claims description 8
- 239000008213 purified water Substances 0.000 claims description 8
- 230000002550 fecal effect Effects 0.000 claims description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 50
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 abstract description 50
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 50
- 239000011574 phosphorus Substances 0.000 abstract description 50
- 230000003373 anti-fouling effect Effects 0.000 abstract description 21
- 238000002360 preparation method Methods 0.000 description 32
- 230000000052 comparative effect Effects 0.000 description 23
- 241000209094 Oryza Species 0.000 description 22
- 238000012360 testing method Methods 0.000 description 14
- 238000001514 detection method Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 8
- 239000004745 nonwoven fabric Substances 0.000 description 7
- 238000000746 purification Methods 0.000 description 5
- 241000233866 Fungi Species 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000000945 filler Substances 0.000 description 4
- 239000008187 granular material Substances 0.000 description 4
- 230000001580 bacterial effect Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 239000010903 husk Substances 0.000 description 3
- 241000287828 Gallus gallus Species 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 210000003608 fece Anatomy 0.000 description 2
- 239000010871 livestock manure Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
-
- 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
Abstract
The application relates to the technical field of sewage treatment, and particularly discloses an ecological filter medium, application thereof, a low-energy-consumption sewage treatment method and a low-energy-consumption sewage treatment device. The application discloses an ecological filter medium, contains the following components by volume: 70-90 parts of soil; 36-44 parts of coarse sand; 43-53 parts of organic matters; the organic matter is selected from rice hull powder, fly ash and plant ash. The application also discloses an application of the ecological filter medium in the field of sewage treatment. By utilizing the low-energy-consumption sewage treatment method and device, the anti-fouling and anti-blocking performance of the sewage treatment device can be effectively improved, and the ammonia nitrogen removal rate, the COD removal rate and the total phosphorus removal rate in sewage can be effectively improved.
Description
Technical Field
The application relates to the technical field of sewage treatment, in particular to an ecological filter medium, application thereof, a low-energy-consumption sewage treatment method and a low-energy-consumption sewage treatment device.
Background
With the continuous development of economy in China, the secondary sewage treatment technology is continuously improved, but the harmless treatment and recycling of sewage cannot be completely realized by only the secondary sewage treatment. For rural areas, traditional sewage treatment is not suitable for rural sewage treatment due to the influence of local economy, living habits and sanitary ware configuration conditions.
When the existing soil ecological treatment technology is used for treating sewage, the problem that the sewage treatment device in the soil ecological treatment technology is difficult to maintain and repair is caused, and the cost of sewage treatment is increased.
Disclosure of Invention
In order to solve the problems of easy blockage and difficult cleaning of a sewage treatment device in the soil ecological treatment technology and simultaneously improve the ammonia nitrogen removal rate, the COD removal rate and the total phosphorus removal rate in sewage, the application provides an ecological filter medium, application thereof, a low-energy-consumption sewage treatment method and a device.
In a first aspect, the present application provides an ecological filter medium, which adopts the following technical scheme:
an improved soil, the ecological filter medium comprises the following components in parts by volume: 70-90 parts of soil; 36-44 parts of coarse sand; 43-53 parts of organic matters; the organic matter is selected from rice hull powder, fly ash and plant ash.
According to the method, rice hull powder, fly ash or plant ash is selected as an organic matter, and then the organic matter, soil and coarse sand are taken to prepare the ecological filter medium. The ecological filter medium is used for a low-energy-consumption sewage treatment method and a sewage treatment device, can effectively improve the anti-fouling performance of the sewage treatment device, and can effectively improve the ammonia nitrogen removal rate, the COD removal rate and the total phosphorus removal rate in sewage.
The rice hull powder, the fly ash and the plant ash used in the method are low in price, wide in source, multiple in pore and good in adsorption performance, and can be used as organic matters in the ecological filter medium and then used in a sewage treatment method to effectively adsorb organic matters in sewage, so that the ammonia nitrogen removal rate, the COD removal rate and the total phosphorus removal rate in the sewage can be improved.
Preferably, the grit is: 0.4-0.8mm.
In a particular embodiment, the grit may have a particle size of 0.4mm, 0.6mm, 0.8mm.
In some specific embodiments, the grit may also have a particle size of 0.4 to 0.6mm, 0.6 to 0.8mm.
Through experimental analysis, when the granularity of control grit is in above-mentioned within range, can further improve sewage treatment plant's anti-soil stifled performance, and can further improve ammonia nitrogen clearance, COD clearance and total phosphorus clearance in the sewage. Therefore, the present application controls the grit size of the grit to be within the above range.
Preferably, the particle size of the rice hull powder is: 30-50 meshes.
In a particular embodiment, the rice hull powder may have a particle size of 30 mesh, 40 mesh, 50 mesh.
In some particular embodiments, the rice hull powder may also have a particle size of 30-40 mesh, 40-50 mesh.
According to experimental analysis, when the granularity of the rice hull powder is controlled within the range, the anti-fouling performance of the sewage treatment device can be further improved, and the ammonia nitrogen removal rate, the COD removal rate and the total phosphorus removal rate in sewage can be further improved. Therefore, the present application controls the particle size of the rice hull powder within the above range.
Preferably, the particle size of the fly ash is: 10-30 meshes.
In a particular embodiment, the fly ash may have a particle size of 10 mesh, 20 mesh, 30 mesh.
In some specific embodiments, the fly ash may also have a particle size of 10-20 mesh, 20-30 mesh.
According to experimental analysis, when the granularity of the fly ash is controlled to be within the range, the antifouling performance of the sewage treatment device can be further improved, and the ammonia nitrogen removal rate, the COD removal rate and the total phosphorus removal rate in sewage can be further improved. Accordingly, the present application controls the particle size of the fly ash within the above range.
Preferably, the particle size of the plant ash is as follows: 180-220 meshes.
In a specific embodiment, the particle size of the plant ash may be 180 mesh, 200 mesh, 220 mesh.
In some specific embodiments, the particle size of the plant ash can also be 180-200 mesh, 200-220 mesh.
Through experimental analysis, when the granularity of control plant ash is in above-mentioned within range, can further improve sewage treatment plant's anti-soil stifled performance, and can further improve ammonia nitrogen clearance, COD clearance and total phosphorus clearance in the sewage. Therefore, the present application controls the particle size of the plant ash within the above range.
Soil and organic matter hole that this application used are many, but the hole is less, and the permeability is poor for ecological filter medium's retaining ability reinforce, but drainage performance is relatively poor, arouses sewage treatment plant easily and takes place the ponding phenomenon. This application is selected to add the coarse sand in ecological filter medium, can improve ecological filter medium's porosity, increases ecological filter medium's penetrating ability. However, excessive grit can cause the wastewater treatment device to have excessive permeability to wastewater, which can reduce ammonia nitrogen removal, COD removal, and total phosphorus removal from the wastewater. Consequently need rationally regulate and control the quantity of each component among the ecological filter medium, utilize the sewage treatment plant that the preparation of the ecological filter medium that this application provided obtained, can effectively improve sewage treatment plant's anti-soil blocking performance, can effectively improve ammonia nitrogen clearance, COD clearance and total phosphorus clearance in the sewage simultaneously.
According to experimental analysis, compare in exclusive use soil, or use grit and soil, or use organic matter and soil to be used for preparing ecological filter medium again, this application selection uses soil, grit and organic matter to be used for preparing ecological filter medium simultaneously, can effectively improve the anti-soil stifled performance of device, can effectively improve ammonia nitrogen clearance, COD clearance and total phosphorus clearance in the sewage simultaneously. Thus, the present application contemplates the simultaneous use of soil, grit, and organic matter for the preparation of an ecological filter medium.
In a specific embodiment, the soil may be added in an amount of 70 parts, 80 parts, 90 parts.
In some specific embodiments, the soil may be added in an amount of 70 to 80 parts, 80 to 90 parts.
Through experimental analysis, can know when the addition of black loess in the ecological filter medium of control is in above-mentioned within range, can further improve the anti-soil stifled performance of device, can further improve ammonia nitrogen clearance, COD clearance and total phosphorus clearance in the sewage simultaneously. Therefore, the present application controls the amount of black loess added to the ecological filter medium within the above range.
In a specific embodiment, the addition amount of the coarse sand may be 36 parts, 40 parts, 44 parts.
In some specific embodiments, the amount of grit added may also be 36-40 parts, 40-44 parts.
Through experimental analysis, when the additive amount of coarse sand in the control ecological filter medium is in above-mentioned within range, can further improve the anti-soil stifled performance of device, can further improve ammonia nitrogen clearance, COD clearance and total phosphorus clearance in the sewage simultaneously. Therefore, the addition amount of the coarse sand in the ecological filter medium is controlled within the range.
Further, the organic matter is rice hull powder.
Through experimental analysis, compare in the selection and use fly ash or plant ash, this application selection uses the rice husk powder as the organic matter component in the ecological filter medium, can further improve the anti-soil stifled performance of device, can further improve ammonia nitrogen clearance, COD clearance and total phosphorus clearance in the sewage simultaneously. Therefore, the present application chooses to use rice hull powder as the organic matter in the ecological filter medium.
In a specific embodiment, the addition amount of the organic matter may be 43 parts, 48 parts, 53 parts.
In some specific embodiments, the addition amount of the organic matter can be 43 to 48 parts and 48 to 53 parts.
According to experimental analysis, when the addition of organic matters in the ecological filter medium is controlled within the range, the anti-fouling performance of the device can be further improved, and the ammonia nitrogen removal rate, the COD removal rate and the total phosphorus removal rate in sewage can be further improved. Therefore, the present application controls the amount of organic matter added to the ecological filter medium to be within the above range.
Preferably, the soil is selected from the group consisting of black loess, fecal soil, sandy soil, and moist soil.
Further, the soil is black loess.
Known through experimental analysis, compare in the soil component of selecting to use yellow chicken manure soil, sand soil or moisture soil as ecological filter medium, the soil component of black loess as ecological filter medium is selected to use in this application, can further improve the anti-soil blocking performance of device, can further improve ammonia nitrogen clearance, COD clearance and total phosphorus clearance in the sewage simultaneously. Therefore, the present application chooses to use black loess as the soil in the ecological filter medium.
In a second aspect, the present application provides the use of the above-described ecological filter medium in the field of sewage treatment.
In a third aspect, the present application provides a low energy consumption sewage treatment method using the above ecological filter medium.
Preferably, the low-energy-consumption sewage treatment method specifically comprises the following steps: and taking a sewage sample, then respectively flowing through the stone layer, the ecological filter medium layer piled up by the ecological filter medium and the ceramsite layer, and collecting to obtain purified water.
The stones, the ecological filter medium and the ceramsite used in the sewage treatment method have the characteristics of wide sources and low price, and the resources and energy consumed in the sewage treatment process are less, so the sewage treatment method has the advantage of low energy consumption.
Preferably, the low-energy-consumption sewage treatment method adopts a 24-hour continuous water inlet mode; the water inflow of the sewage is 48-52L/d.
Preferably, the particle size of the stones is 20 ± 1mm; the granularity of the ceramsite is 6 +/-1 mm.
Further, the amount of each flow-through layer in the low-energy-consumption sewage treatment method is as follows: 15-22.5dm of stone layer 3 (ii) a The ecological filter medium layer is 60-75dm 3 (ii) a The ceramic particle layer is 12.5-17.5dm 3 。
In a particular embodiment, the stone layer may be present in an amount of 15dm 3 、18.75dm 3 、22.5dm 3 。
In some embodiments, the stone layer may also be used in an amount of 15 to 18.75dm 3 、 18.75-22.5dm 3 。
In a specific embodiment, the amount of the ecological filter medium layer can be 60dm 3 、67.5dm 3 、 75dm 3 。
In some specific embodiments, the ecological filter medium can be used in an amount of 60-67.5dm 3 、 67.5-75dm 3 。
In a particular embodiment, the amount of the ceramic layer may be 12.5dm 3 、15dm 3 、17.5dm 3 。
In some specific embodiments, the amount of the ceramsite layer may also be from 12.5 to 15dm 3 、15-17.5dm 3 。
Through experimental analysis, when the amount of each flowing layer is controlled to be within the range, the antifouling performance of the device can be further improved, and the ammonia nitrogen removal rate, the COD removal rate and the total phosphorus removal rate in sewage can be further improved. Thus, the present application controls the amount of each flow-through layer within the above ranges.
Preferably, the ceramic granule layer further comprises high-efficiency water quality purifying bacteria.
The haydite density is little, and is inside porous, and this application regards as the carrier of high-efficient quality of water purification fungus with the haydite, and the haydite helps the bacterial to form the biomembrane, builds good growing environment for the bacterial, promotes the metabolism of bacterial to promote the consumption degradation and the denitrogenation effect of high-efficient quality of water purification fungus in the haydite layer to organic matter in the sewage, further improved ammonia nitrogen clearance, COD clearance and total phosphorus clearance in the sewage.
Further, the content of the high-efficiency water quality purifying bacteria in the ceramsite layer is 0.013-0.017g/cm 3 。
According to experimental analysis, when the efficient water quality purifying bacteria are not added into the ceramic particle layer, the sewage treatment device has poor anti-fouling performance, and the ammonia nitrogen removal rate, the COD removal rate and the total phosphorus removal rate in the sewage are low; and when adding high-efficient quality of water purification fungus in the pottery granule layer, can effectively improve the anti-soil stifled performance of device, can effectively improve ammonia nitrogen clearance, COD clearance and total phosphorus clearance in the sewage simultaneously.
In a specific embodiment, the content of the high efficiency water purifying bacteria in the ceramsite layer may be 0.013g/cm 3 、0.015g/cm 3 、0.017g/cm 3 。
In some specific embodiments, the content of the high efficiency water quality purification bacteria in the ceramsite layer can also be 0.013-0.015g/cm 3 、0.015-0.017g/cm 3 。
Through experimental analysis, when the content of the high-efficiency water quality purifying bacteria in the ceramsite layer is controlled within the range, the antifouling performance of the device can be further improved, and the ammonia nitrogen removal rate, the COD removal rate and the total phosphorus removal rate in sewage can be further improved. Therefore, the content of the high-efficiency water quality purifying bacteria in the ceramsite layer is controlled within the range.
In a fourth aspect, the application provides a sewage treatment device, which comprises a water receiving pipe, a packing layer and a water distribution pipe which are sequentially laid from bottom to top; the packing layer comprises the stone layer, the ecological filter medium layer and the ceramsite layer which are sequentially paved from bottom to top.
Preferably, the water distribution pipe is tightly attached to the top of the packing layer.
The application provides a sewage treatment plant in the water distributor hugs closely in the packing layer for sewage in the water distributor flows into the packing layer steadily, can reduce the impact force of sewage to the packing layer.
Preferably, the water distribution pipe is selected from a straight water distribution pipe or a round water distribution pipe.
Furthermore, the water distribution pipe is a water distribution pipe with a shape like Chinese character feng.
Preferably, a non-woven fabric is arranged between the water distribution pipe and the packing layer.
Select rich word water distributor to be used for preparing sewage treatment plant in this application, be favorable to even moisturizing, can effectively improve sewage treatment plant's anti-soil stifled nature. In addition, this application lays the non-woven fabrics between water distributor and packing layer, not only is favorable to the uniform water distribution, can effectively block the suspended filler granule in the sewage simultaneously to can effectively improve sewage treatment plant's anti-soil stifled nature.
Through experimental analysis, when selecting to use the rich word water distributor, perhaps lay one deck non-woven fabrics between water distributor and packing layer, can further improve the anti-soil stifled performance of device, and can further improve ammonia nitrogen clearance, COD clearance and the total phosphorus clearance in the sewage.
To sum up, the technical scheme of this application has following effect:
rice husk powder, fly ash or plant ash are selected as organic matter to this application, then obtain ecological filter medium with organic matter, soil, coarse sand preparation, utilize this ecological filter medium to handle sewage, can effectively improve sewage treatment plant's anti-soil stifled performance, can effectively improve ammonia nitrogen clearance, COD clearance and total phosphorus clearance in the sewage simultaneously.
According to the low-energy-consumption sewage treatment method, sewage samples respectively flow through the stone layer, the ecological filter medium layer and the ceramsite layer, and purified water is obtained through collection; meanwhile, a sewage treatment device is designed, which comprises a water collecting pipe, a packing layer and a water distributing pipe which are sequentially laid from bottom to top; the packing layer comprises a stone layer, an ecological filter medium layer and a ceramsite layer which are sequentially paved from bottom to top. By utilizing the low-energy-consumption sewage treatment method and the sewage treatment device, the anti-fouling performance of the sewage treatment device can be further improved, and the ammonia nitrogen removal rate, the COD removal rate and the total phosphorus removal rate in sewage can be further improved.
The application further improves the anti-pollution and anti-blocking performance of the sewage treatment device by controlling the using amount of each flowing layer in the low-energy-consumption sewage treatment method and adding high-efficiency water quality purifying bacteria in the ceramsite layer, and can further improve the ammonia nitrogen removal rate, the COD removal rate and the total phosphorus removal rate in the sewage.
Drawings
Fig. 1 is an external view of a sewage treatment apparatus provided in embodiment 2 of the present application.
Fig. 2 is an appearance view of a straight water distribution pipe of the sewage treatment device provided by the application.
Fig. 3 is an appearance view of a water distribution pipe shaped like a Chinese character feng of the sewage treatment device provided by the application.
Detailed Description
In a first aspect, the present application provides an ecological filter medium comprising the following components in parts by volume: 70-90 parts of soil, 36-44 parts of coarse sand and 43-53 parts of organic matters; the organic matter is selected from rice hull powder, fly ash and plant ash.
Wherein the soil is selected from black loess, fecal soil, sandy soil and moisture soil. Further, the soil is black loess.
Specifically, the grit size is: 0.4-0.8mm; the particle size of the rice hull powder is: 30-50 meshes; the particle size of the fly ash is as follows: 10-30 meshes; the granularity of the plant ash is as follows: 180-220 meshes.
In a second aspect, the present application provides the use of the above ecological filter medium in the field of sewage treatment
In a third aspect, the present application provides a low energy consumption sewage treatment method using the above ecological filter medium, specifically comprising the following steps: and taking a sewage sample, then respectively flowing through the stone layer, the ecological filter medium layer piled up by the ecological filter medium and the ceramsite layer, and collecting to obtain purified water.
Wherein, the low energy consumption sewage treatment method adopts a 24-hour continuous water inlet mode; the water inflow of the sewage is 48-52L/d.
Specifically, the particle size of the stones is 20 +/-1 mm; the granularity of the ceramsite is 6 +/-1 mm.
Meanwhile, the dosage of each flowing layer in the low-energy-consumption sewage treatment method is respectively as follows: 15-22.5dm of stone layer 3 (ii) a Ecological filter medium layer 60-75dm 3 (ii) a The ceramic particle layer is 12.5-17.5dm 3 。
Furthermore, the ceramsite layer also comprises high-efficiency water quality purifying bacteria.
Further, the content of the high-efficiency water quality purifying bacteria in the ceramsite layer is 0.013-0.017g/cm 3 。
In a fourth aspect, the application provides a sewage treatment device, which comprises a water collecting pipe, a packing layer and a water distributing pipe which are sequentially laid from bottom to top; the packing layer comprises a stone layer, an ecological filter medium layer and a ceramsite layer which are sequentially paved from bottom to top.
In addition, the water distribution pipe is tightly attached to the packing layer.
Meanwhile, the water distribution pipe is selected from a straight water distribution pipe or a Chinese character feng water distribution pipe.
Furthermore, non-woven fabrics are arranged between the water distribution pipe and the packing layer.
The present application is described in further detail below in connection with preparative examples 1-37, examples 1-47, comparative examples 1-10, and performance testing tests, which are not to be construed as limiting the scope of the invention as claimed.
Preparation examples
Preparation examples 1 to 13
Preparation examples 1 to 13 each provide an ecological filter medium.
The soil in the ecological filter medium of each preparation example is black loess, and the organic matter is rice hull powder with the granularity of 40 meshes.
The difference of the preparation examples is that: the addition amount of each component in the ecological filter medium. The details are shown in Table 1.
The preparation method of the ecological filter medium layer in each preparation example specifically comprises the following steps:
according to the addition amount of each component in the table 1, black loess, coarse sand with the granularity of 0.6mm and rice hull powder with the granularity of 40 meshes are respectively weighed and then fully mixed to prepare the ecological filter medium.
TABLE 1 amounts of the respective components added to the ecological Filter media in preparation examples 1 to 13
Preparation examples 14 to 21
Preparation examples 14 to 21 each provide an ecological filter medium.
The above-mentioned preparation examples differ from preparation example 3 in that: the type of each component in the ecological filter medium. Specifically, as shown in table 2.
TABLE 2 types of Components in the ecological Filter media in preparation examples 3, 14 to 21
Preparation examples 22 to 29
Preparation examples 22 to 29 each provide an ecological filter medium.
The above-mentioned preparation examples differ from preparation example 3 in that: the particle sizes of coarse sand and rice hull powder in the ecological filter medium. Specifically, the results are shown in Table 3.
Table 3 particle sizes of coarse sand and rice hull powder in the ecological filter media of preparation examples 3, 22-29
Preparation examples 30 to 33
Preparation examples 30 to 33 each provide an ecological filter medium.
The above-mentioned preparation examples differ from preparation example 17 in that: the particle size of the fly ash in the ecological filter medium. The details are shown in Table 4.
TABLE 4 particle size of fly ash in the ecological Filter media of preparation examples 17, 30-33
Preparation examples 34 to 37
Preparation examples 34 to 37 each provide an ecological filter medium.
The above-mentioned preparation examples differ from preparation example 18 in that: the particle size of the plant ash in the ecological filter medium. Specifically, the results are shown in Table 5.
TABLE 5 particle size of plant ash in the ecological Filter media of preparation examples 18, 34-37
Examples
Examples 1 to 28
Examples 1-28 each provide a low energy consumption method of wastewater treatment.
The low-energy-consumption sewage treatment method in each embodiment is characterized in that: the type of the ecological filter medium in the filler layer in the used sewage treatment device. Specifically, the results are shown in Table 6.
The low-energy-consumption sewage treatment method specifically comprises the following steps: selecting sewage treated by a fine grid of a sewage plant as test water, standing and precipitating for 12 hours, then enabling the sewage to pass through a sewage treatment device, and collecting to obtain purified water.
Wherein, the sewage treatment method with low energy consumption adopts a 24-hour uninterrupted continuous water inlet mode, and the water inlet quantity is 50L/d.
Above-mentioned sewage treatment plant specifically includes:
s1: the size of the sewage treatment device is 50cm multiplied by 50cm; a water collecting pipe, a packing layer and a straight water distributing pipe are sequentially paved in the device from bottom to top.
S2: the water collecting pipe is arranged on the bottom layer and used for collecting the effluent.
S3: the packing layer is paved from bottom to top in sequence with the dosage of 18.75dm 3 The stone layer of (a); the dosage is 67.5dm 3 The ecological filter medium layer of (2); the dosage is 15dm 3 A ceramsite layer; wherein the granularity of the stones is 20 +/-1 mm, and the granularity of the ceramsite is 6 +/-1 mm.
Wherein the ceramsite layer also comprises high-efficiency water quality purifying bacteria, and the dosage of the high-efficiency water quality purifying bacteria is 225g.
S4: the straight water distribution pipe is arranged above the packing layer; the appearance of the straight water distribution pipe is shown in fig. 2, the straight water distribution pipe is a cylindrical pipe body, and water distribution holes are formed in the pipe body of the water distribution pipe.
The sewage treatment apparatus of example 2 is shown in fig. 1.
Table 6 examples 1-28 types of ecological filter media in the fill layer
Examples 29 to 40
Examples 29 to 40 each provide a low energy consumption sewage treatment method.
The above embodiments are different from embodiment 2 in that: the amount of each component in the filler layer. The details are shown in Table 7.
Table 7 amounts of each component of filler layers in examples 2, 29-40
Examples 41 to 45
Examples 41 to 45 each provide a low energy consumption sewage treatment method.
The above embodiments are different from embodiment 2 in that: the ceramsite layers have different contents of high-efficiency water quality purifying bacteria. The details are shown in Table 8.
TABLE 8 contents of high-efficiency water-purifying bacteria in ceramsite layers in examples 2 and 41 to 45
Example 46
The embodiment provides a low-energy-consumption sewage treatment method.
The present embodiment is different from embodiment 2 in that: the water distribution pipe is a water distribution pipe with a shape like a Chinese character feng.
The appearance of the water distribution pipe is shown in fig. 3, and the water distribution pipe comprises a main pipe, branch pipes and connecting pipes, wherein the branch pipes are arranged on two sides of the main pipe and are arranged in a shape like Chinese character feng, and water distribution holes are formed in the branch pipes.
Example 47
The embodiment provides a sewage treatment device.
The present embodiment is different from embodiment 2 in that: and non-woven fabrics are laid between the water distribution pipes and the packing layer.
Comparative example
Comparative examples 1 to 9
Comparative examples 1 to 9 each provide a low energy consumption sewage treatment method.
The above comparative examples differ from example 2 in that: types of ecological filter media. The details are shown in Table 9.
TABLE 9 types of ecological Filter media in comparative examples 1 to 9
Comparative example 10
The comparative example provides a low energy consumption sewage treatment method.
This comparative example differs from example 3 in that: the packing layer of the sewage treatment device is a stone layer and an ecological filter medium layer which are sequentially paved from bottom to top.
Performance test
The low-energy-consumption sewage treatment methods provided in examples 1 to 47 and comparative examples 1 to 10 were used as the test subjects to test the antifouling property of the sewage treatment apparatus and the ammonia nitrogen removal rate, the COD removal rate, and the total phosphorus removal rate of the sewage by the low-energy-consumption sewage treatment method.
(1) Antifouling and blocking performance
The detection method comprises the following steps: and (3) detecting the running time of the sewage treatment device by taking the phenomenon of water accumulation on the surface of the sewage treatment device as a judgment standard, and inspecting the anti-fouling and anti-blocking performance of the sewage treatment device.
And (3) detection results: as shown in table 10.
(2) Ammonia nitrogen removal effect, COD removal effect and total phosphorus removal effect in sewage
The detection method comprises the following steps: the quality of purified water (ammonia nitrogen content, COD content and total phosphorus content) after sewage treatment is detected, and the ammonia nitrogen removal effect, the COD removal effect and the total phosphorus removal effect of the low-energy-consumption sewage treatment method provided by the application on sewage are considered.
The control example was untreated sewage.
And (3) detection results: as shown in table 10.
TABLE 10 running time and purified water quality of sewage treatment plant
With reference to table 7, by comparing the test results of examples 1 to 47 with those of comparative examples 1 to 10, when the low-energy sewage treatment method and the sewage treatment apparatus provided by the present application are used to treat sewage, the sewage treatment apparatus gradually starts to accumulate water when the operation time is longer than 24 d; after the device operates stably, the water quality of the purified water is that the ammonia nitrogen content is lower than 4.1mg/L, the COD content is lower than 47mg/L, and the total phosphorus content is lower than 0.42mg/L. The detection result shows that the low-energy-consumption sewage treatment method can effectively improve the anti-fouling and anti-blocking performance of the sewage treatment device, and can effectively improve the ammonia nitrogen removal rate, the COD removal rate and the total phosphorus removal rate in sewage.
By comparing the test results of example 2 and comparative examples 7 to 9, when soil alone, coarse sand and soil, or organic matter and soil are used for preparing the ecological filter medium, and the sewage treatment device is operated for 10 days, water accumulation occurs, and the ammonia nitrogen removal rate, the COD removal rate and the total phosphorus removal rate in the sewage are respectively lower than 71%, 76% and 77%. And this application selects to use soil, coarse sand and organic matter simultaneously to be used for preparing ecological filter medium, can effectively improve sewage treatment plant's anti-soil stifled performance, can effectively improve ammonia nitrogen clearance, COD clearance and total phosphorus clearance in the sewage simultaneously. Thus, the present application selects the simultaneous use of soil, grit and organic matter for the preparation of an ecological filter medium.
Through the testing result of comparative example 2 and embodiment 8-10, compare in the soil component of selecting to use yellow chicken manure soil, sand soil or moisture soil as ecological filter medium, the soil component in this application selection uses black loess as ecological filter medium can effectively improve the anti-soil stifled performance of device, can effectively improve ammonia nitrogen clearance, COD clearance and the total phosphorus clearance in the sewage simultaneously. Therefore, the present application chooses to use black loess as the soil in the ecological filter medium.
By comparing the detection results of the examples 1 to 3 and the comparative examples 1 to 2, when the addition amount of the soil in the ecological filter medium is controlled within the range of 70 to 90 parts, the anti-fouling performance of the sewage treatment device can be further improved, and the ammonia nitrogen removal rate, the COD removal rate and the total phosphorus removal rate in the sewage can be further improved. Therefore, the present application controls the amount of black loess added to the ecological filter medium within the above range.
By comparing the detection results of the examples 2, 4-5 and the comparative examples 3-4, when the addition amount of the coarse sand in the ecological filter medium is controlled within the range of 36-44 parts, the anti-fouling performance of the sewage treatment device can be further improved, and the ammonia nitrogen removal rate, the COD removal rate and the total phosphorus removal rate in the sewage can be further improved. Therefore, the addition amount of the coarse sand in the ecological filter medium is controlled within the range.
Through the testing result of comparative example 2 and embodiment 11-12, compare in the organic matter component of selecting to use fly ash or plant ash as ecological filter medium, this application selects to use the rice husk powder as the organic matter component in the ecological filter medium, can further improve sewage treatment plant's anti-soil stifled performance, can further improve the ammonia nitrogen clearance, COD clearance and total phosphorus clearance in the sewage simultaneously. Therefore, the present application chooses to use rice hull powder as the organic matter in the ecological filter medium.
By comparing the detection results of the examples 2, 6 to 7 and the comparative examples 5 to 6, when the addition amount of the organic matter in the ecological filter medium is controlled within the range of 43 to 53 parts, the anti-fouling performance of the sewage treatment device can be further improved, and the ammonia nitrogen removal rate, the COD removal rate and the total phosphorus removal rate in the sewage can be further improved. Therefore, the present application controls the amount of organic matter added to the ecological filter medium to be within the above range.
Through the test results of comparative examples 2 and 13 to 16, when the grit size of the coarse sand is controlled within the range of 0.4 to 0.8mm, the anti-fouling performance of the sewage treatment device can be further improved, and the ammonia nitrogen removal rate, the COD removal rate and the total phosphorus removal rate in the sewage can be further improved. Therefore, the present application controls the grit size of the grit to be within the above range.
Through the test results of comparative examples 2 and 17 to 20, when the particle size of the rice hull powder is controlled within the range of 30 to 50 meshes, the anti-fouling performance of the sewage treatment device can be further improved, and the ammonia nitrogen removal rate, the COD removal rate and the total phosphorus removal rate in the sewage can be further improved. Therefore, the present application controls the particle size of the rice hull powder within the above range.
By comparing the detection results of the embodiments 17 and 21 to 24, when the particle size of the fly ash is controlled within the range of 10 to 30 mesh, the anti-fouling performance of the sewage treatment apparatus can be further improved, and the ammonia nitrogen removal rate, the COD removal rate, and the total phosphorus removal rate in the sewage can be further improved. Accordingly, the present application controls the particle size of the fly ash within the above range.
By comparing the detection results of examples 18 and 25 to 28, when the particle size of the plant ash is controlled to be in the range of 180 to 220 meshes, the anti-fouling performance of the sewage treatment device can be further improved, and the ammonia nitrogen removal rate, the COD removal rate and the total phosphorus removal rate in the sewage can be further improved. Therefore, the present application controls the particle size of the plant ash within the above range.
By comparing the test results of examples 2 and 29-32, when the dosage of the stone layer is controlled between 15-22.5dm 3 In the time of within range, can further improve sewage treatment plant's anti-soil stifled performance, and can further improve ammonia nitrogen clearance, COD clearance and total phosphorus clearance in the sewage. Therefore, the present application controls the amount of the stone layer to the above range.
According to the detection results of comparative examples 2 and 33-36, when the dosage of the ecological filter medium layer is controlled to be 60-75dm 3 In the time of within range, can further improve sewage treatment plant's anti-soil stifled performance, and can further improve ammonia nitrogen clearance, COD clearance and total phosphorus clearance in the sewage. Therefore, the present application controls the amount of the ecological filter medium layer to the above range.
By way of comparative examples 2, 37 to 40The detection result shows that when the dosage of the ceramic particle layer is controlled to be 12.5-17.5dm 3 In the time of within the scope, can further improve the stifled performance of anti-soil of device, and can further improve ammonia nitrogen clearance, COD clearance and total phosphorus clearance in the sewage. Therefore, the amount of the ceramic grain layer is controlled within the above range.
By comparing the detection results of the embodiments 2 and 41 to 45, when no high-efficiency water quality purifying bacteria are added to the granular layer, the sewage treatment device has poor anti-fouling performance, and the ammonia nitrogen removal rate, the COD removal rate and the total phosphorus removal rate in the sewage are low; and when adding high-efficient quality of water purification fungus in the pottery granule layer, can effectively improve sewage treatment plant's anti-soil stifled performance, can effectively improve ammonia nitrogen clearance, COD clearance and total phosphorus clearance in the sewage simultaneously. Meanwhile, when the content of the high-efficiency water quality purifying bacteria in the ceramsite layer is controlled to be 0.013-0.017g/cm 3 In the time of within the scope, can further improve the stifled performance of anti-soil of device, and can further improve ammonia nitrogen clearance, COD clearance and total phosphorus clearance in the sewage. Therefore, the content of the high-efficiency water quality purifying bacteria in the ceramsite layer is controlled within the range.
Through the testing result of comparative example 2, 46, compare in using a word water distributor, this application selects to use rich word water distributor, can further sewage treatment improve the anti-soil stifled performance of device, and can further improve ammonia nitrogen clearance, COD clearance and total phosphorus clearance in the sewage. Therefore, the water distribution pipe with the shape like the Chinese character feng is selected to be used in the application.
Through the testing result of comparative example 2, 47, when laying the non-woven fabrics between water distributor and packing layer, can further improve sewage treatment plant's anti-soil stifled performance, and can further improve ammonia nitrogen clearance, COD clearance and total phosphorus clearance in the sewage. Therefore, the non-woven fabrics are laid between the water distribution pipes and the packing layer.
Although the invention has been described in detail hereinabove with respect to a general description and specific embodiments thereof, it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (10)
1. An ecological filter medium, characterized in that the ecological filter medium comprises the following components in parts by volume: 70-90 parts of soil; 36-44 parts of coarse sand; 43-53 parts of organic matters; the organic matter is selected from rice hull powder, fly ash and plant ash.
2. The ecological filter medium of claim 1, wherein the soil is selected from the group consisting of black loess, fecal soil, sandy soil, and tidal soil.
3. Use of the ecological filter medium according to any one of claims 1-2 in the field of sewage treatment.
4. A low-energy-consumption sewage treatment method, characterized in that sewage is treated by using the ecological filter medium as claimed in any one of claims 1 to 2.
5. The low-energy-consumption sewage treatment method according to claim 4, characterized by comprising the following steps: and taking a sewage sample, then respectively flowing through the stone layer, the ecological filter medium layer piled up by the ecological filter medium and the ceramsite layer, and collecting to obtain purified water.
6. The low-energy-consumption sewage treatment method according to claim 5, wherein the low-energy-consumption sewage treatment method adopts a 24-hour continuous water feeding mode; the water inflow of the sewage is 48-52L/d.
7. The low-energy-consumption sewage treatment method according to any one of claims 4 to 6, wherein the amount of each flow-through layer in the low-energy-consumption sewage treatment method is respectively as follows: 15-22.5dm of stone layer 3 (ii) a The ecological filter medium layer is 60-75dm 3 (ii) a The ceramsite layer is 12.5-17.5dm 3 。
8. The low energy consumption sewage treatment method according to claim 5, wherein the ceramic particle layer further comprises high efficiency water quality purifying bacteria.
9. The method for sewage treatment with low energy consumption of claim 8, wherein the content of the efficient water quality purifying bacteria in the ceramsite layer is 0.013-0.017g/cm 3 。
10. A sewage treatment device is characterized by comprising a water collecting pipe, a packing layer and a water distributing pipe which are laid in sequence from bottom to top; the packing layer comprises the stone layer, the ecological filter medium layer and the ceramsite layer which are sequentially paved from bottom to top.
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Application publication date: 20221230 |