CN116621386A - Method and system for treating fecal sewage by microorganisms - Google Patents
Method and system for treating fecal sewage by microorganisms Download PDFInfo
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- CN116621386A CN116621386A CN202310800955.4A CN202310800955A CN116621386A CN 116621386 A CN116621386 A CN 116621386A CN 202310800955 A CN202310800955 A CN 202310800955A CN 116621386 A CN116621386 A CN 116621386A
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- 239000010865 sewage Substances 0.000 title claims abstract description 161
- 230000002550 fecal effect Effects 0.000 title claims abstract description 59
- 244000005700 microbiome Species 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000015556 catabolic process Effects 0.000 claims abstract description 45
- 238000006731 degradation reaction Methods 0.000 claims abstract description 45
- 230000000813 microbial effect Effects 0.000 claims abstract description 45
- 239000010802 sludge Substances 0.000 claims abstract description 37
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 21
- 244000063299 Bacillus subtilis Species 0.000 claims abstract description 17
- 235000014469 Bacillus subtilis Nutrition 0.000 claims abstract description 17
- 241000894006 Bacteria Species 0.000 claims abstract description 17
- 241000194032 Enterococcus faecalis Species 0.000 claims abstract description 16
- 241000235342 Saccharomycetes Species 0.000 claims abstract description 16
- 239000002131 composite material Substances 0.000 claims abstract description 16
- 229940032049 enterococcus faecalis Drugs 0.000 claims abstract description 16
- 230000000593 degrading effect Effects 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 183
- 239000010410 layer Substances 0.000 claims description 59
- 238000004062 sedimentation Methods 0.000 claims description 49
- 238000003756 stirring Methods 0.000 claims description 25
- 239000003344 environmental pollutant Substances 0.000 claims description 23
- 231100000719 pollutant Toxicity 0.000 claims description 23
- 238000002156 mixing Methods 0.000 claims description 22
- 239000000203 mixture Substances 0.000 claims description 22
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- 239000004367 Lipase Substances 0.000 claims description 12
- 108090001060 Lipase Proteins 0.000 claims description 12
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 12
- 239000002738 chelating agent Substances 0.000 claims description 12
- 235000019421 lipase Nutrition 0.000 claims description 12
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- 102000013142 Amylases Human genes 0.000 claims description 11
- 108010065511 Amylases Proteins 0.000 claims description 11
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- 229920000159 gelatin Polymers 0.000 claims description 11
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- 235000011852 gelatine desserts Nutrition 0.000 claims description 11
- 239000008213 purified water Substances 0.000 claims description 11
- 239000012137 tryptone Substances 0.000 claims description 11
- 238000005192 partition Methods 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 8
- 238000005273 aeration Methods 0.000 claims description 7
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- 239000006228 supernatant Substances 0.000 claims description 7
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 claims description 6
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims description 6
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 6
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 6
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- 235000015278 beef Nutrition 0.000 claims description 6
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- -1 diethyl triamine pentaacetic acid Chemical compound 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 239000008103 glucose Substances 0.000 claims description 6
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 6
- 235000013379 molasses Nutrition 0.000 claims description 6
- 235000019319 peptone Nutrition 0.000 claims description 6
- 230000002035 prolonged effect Effects 0.000 claims description 6
- 229910052708 sodium Inorganic materials 0.000 claims description 6
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- 239000011780 sodium chloride Substances 0.000 claims description 6
- 230000001954 sterilising effect Effects 0.000 claims description 6
- 239000002344 surface layer Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
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- 230000001133 acceleration Effects 0.000 claims description 4
- 239000003054 catalyst Substances 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000356 contaminant Substances 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 3
- 239000000047 product Substances 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 239000004480 active ingredient Substances 0.000 claims description 2
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
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- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- NEAQRZUHTPSBBM-UHFFFAOYSA-N 2-hydroxy-3,3-dimethyl-7-nitro-4h-isoquinolin-1-one Chemical compound C1=C([N+]([O-])=O)C=C2C(=O)N(O)C(C)(C)CC2=C1 NEAQRZUHTPSBBM-UHFFFAOYSA-N 0.000 description 1
- 241000194033 Enterococcus Species 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 108091005804 Peptidases Proteins 0.000 description 1
- 239000004365 Protease Substances 0.000 description 1
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- 240000004808 Saccharomyces cerevisiae Species 0.000 description 1
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 229940088710 antibiotic agent Drugs 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
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- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000009044 synergistic interaction Effects 0.000 description 1
Classifications
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- 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
- C02F3/02—Aerobic processes
-
- 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
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
-
- 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
- C02F3/348—Biological treatment of water, waste water, or sewage characterised by the microorganisms used characterised by the way or the form in which the microorganisms are added or dosed
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F7/00—Aeration of stretches of water
-
- 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 invention relates to the technical field of sewage treatment, in particular to a method for treating fecal sewage by microorganisms, which comprises the following steps: introducing fecal sewage into an aerobic tank with microbial degradation balls, prolonging the contact time of the fecal sewage and the microbial degradation balls, fully degrading the sewage by the microbial degradation balls, and then carrying out sludge precipitation treatment on the degraded sewage to strengthen the dephosphorization constructed wetland, the ecological pond, the ultraviolet tank and the disinfection tank. The composite degrading bacteria in the microbial degrading ball comprise bacillus subtilis, enterococcus faecalis and saccharomycetes, then the microbial composite strain is solidified through a microbial carrier material, so that the functional microorganism content is high, the functional microorganism is not attenuated in use, the functional microorganism is not elapsed and is impact-resistant, and finally the functional microorganism is used for treating fecal sewage in a biodegradation tank. The invention has the characteristics of good treatment effect on fecal sewage, high speed and no secondary pollution.
Description
Technical Field
The invention relates to a method and a system for treating fecal sewage by microorganisms, and belongs to the technical field of sewage treatment.
Background
Along with the continuous growth of population and the acceleration of urban process, the number of public toilets in cities is continuously increased, the generated sewage becomes a great aeipathia in urban environment, and a great amount of sewage is generated by the public toilets every day, so that the pressure of purification treatment is brought to a sewage treatment plant, and hidden danger of disease transmission exists in the conveying process. Accordingly, the prior art is in need of development. The sewage treatment method is divided into physical treatment, chemical treatment and biological treatment. But biological treatment is increasingly widely used because of the advantages of safe use and no environmental pollution.
However, the sewage treatment bacterial agents in the current market are various, including ammonia nitrogen removing agents, COD degrading agents, denitrifying bacterial agents and the like, but have single bacterial structures, and most of them contain only 1 or 2 different types of microorganisms, and most of the microorganisms are common microorganism populations, so that the sewage treatment bacterial agents have better effects on the easily treated sewage in certain specific environments, and have poor treatment effects on the sewage containing a large amount of pollutants which are difficult to degrade, such as aromatic hydrocarbons, antibiotics and the like and in extreme environments.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides a method for treating fecal sewage by microorganisms, which treats sewage by using a microbial degradation ball, adopts a plurality of microbial symbiotic technologies, rapidly breeds and can degrade pollutants with a plurality of components, and provides an effective and innovative solution for fecal sewage treatment.
To achieve the object of the present invention, the present invention provides a method for treating fecal sewage by microorganisms, comprising:
introducing fecal sewage into an aerobic tank, and then adding the microbial degradation balls into the aerobic tank by adopting an automatic dosing device;
the contact time of the fecal sewage and the microbial degradation balls is prolonged, so that the fecal sewage is fully degraded;
introducing the degraded sewage into a sludge sedimentation tank for sludge sedimentation treatment to obtain supernatant;
the upper layer sewage in the sludge sedimentation tank is conveyed to a water distribution pipe, the water distribution pipe sprays the sewage on the upper surface of the reinforced dephosphorization artificial wetland, so that the sewage naturally infiltrates downwards, and is converged into a water collecting pipe after being filtered by a filter layer and absorbed by plants;
draining water in the water collecting pipe into a water collecting tank, allowing the water in the water collecting tank to permeate through the undercurrent filtering belt and flow into the ecological pond, and continuing to purify the wet underground of the ecological pond;
pumping pool water in the ecological pool by a water pump, then placing the pool water into an ultraviolet pool for ultraviolet irradiation on a sewage body, performing primary irradiation for 30-60 min by using 200-300 nm ultraviolet light, and performing secondary irradiation for 30-60 min by using 300-400 nm ultraviolet light;
and placing the water subjected to ultraviolet treatment into a disinfection tank to remove pathogenic bacteria carried in the sewage, wherein a domestic water pipeline is connected to the water outlet end of the disinfection tank.
Further, the automatic dosing device is operated by a dosing strategy comprising the following specific steps:
s10, before dosing, collecting sewage with each step chromaticity, accurately measuring the pollutant content in the step chromaticity, and obtaining the step chromaticity datakAnd contaminant content datamSubstituting the obtained product into data fitting software to obtain corresponding functions of the content of pollutants corresponding to the sewage with each unit chromaticity volumem(k) Thereby obtaining the needed medicament content of the sewage with each unit chromaticity volume corresponding to the pollutant contentl；
S20, height of the automatic dosing device from the aerobic tankhCollecting byObtaining the time for the dripping of the medicament from the automatic medicament adding device onto the sewage>WhereingGravity acceleration, flow rate of extracted sewagevObtaining the distance of the picture extraction position from the projection of the output end of the automatic dosing device to the aerobic tank>；
S30, collecting the sewage image, dividing the collected image into n water body square images, and collecting the chromaticity data of the water body square images to obtain chromaticity data which isWherein->Is the firstiObtaining the corresponding pollutant amount in the whole sewage image by the average value of the chromaticity of each water body square image>Thereby calculating the amount of the chemical to be added to the sewage image by multiplying the amount of the pollutant by the amount of the chemical to be added to the sewage of each unit chromaticity volume；
S40, extracting the width of the sewage imagedCalculating the time of the sewage area with the collected image passing through the automatic medicine adding deviceThe dosing speed of the automatic dosing device is +.>。
Further, the method for prolonging the contact time of the fecal sewage and the microbial degradation ball comprises the following steps:
isolating the microbial degradation balls by using a plurality of partition plates arranged in the aerobic tank, so that each microbial degradation ball is isolated from each other;
aeration is carried out at the bottom of the aerobic tank, so that sewage in the aerobic tank passes through the bottom end and the top end of the adjacent partition boards in sequence under the blocking action of the partition boards to form up-and-down reciprocating baffling, thereby prolonging the contact time of fecal sewage and the microbial degradation balls.
Further, the microbial degradation ball comprises an immobilized carrier, composite degradation bacteria embedded in the immobilized carrier and an additive for supporting the structure of the microbial degradation ball; the immobilized carrier is a mixture prepared from tryptone, cellulase, amylase, lipase and gelatin; the composite degrading bacteria comprise bacillus subtilis, enterococcus faecalis and saccharomycetes, wherein the ratio of the effective viable count of the bacillus subtilis to the enterococcus faecalis to the effective viable count of the saccharomycetes is 10:1:2, and the total effective viable count of the active ingredients is 1 multiplied by 10 9 CFU/ml; the additive is one of cellulose, 101 carrier or 6201 carrier.
Further, the preparation method of the microbial degradation ball comprises the following steps:
s1: adding bacillus subtilis, enterococcus faecalis and saccharomycetes into a culture medium for respectively culturing until the stages are reached;
s2: adding an additive into the cultured composite bacteria, and uniformly stirring to obtain a suspension;
s3: configuration of immobilized carrier liquid: mixing tryptone, cellulase, amylase, lipase, gelatin and purified water, stirring uniformly to obtain immobilized carrier liquid, wherein the mass ratio of the tryptone, the cellulase, the amylase, the lipase, the gelatin and the purified water is (8-10%) to (6-8%) to (8-10%) to (3-5%) to (8-10%) and the balance of purified water;
s4: mixing the suspension obtained in the step S2 according to the volume of the same proportion, uniformly stirring and mixing the suspension with the immobilized carrier liquid prepared in the step S3 according to the weight ratio of 15:100, and then placing the mixture in an oven for drying at 45 ℃ to obtain the nano-porous silica gel.
Further, the preparation method of the culture medium comprises the following steps: 10 parts of beef extract, 30 parts of molasses, 10 parts of glucose, 10 parts of peptone and 2 parts of KH are added into 1000 parts of water in sequence 2 PO 4 And 4 parts of NaCl, regulating pH value to 6.2-6.8, sterilizing at 120 ℃ for 20min, cooling to 37 ℃, adding a water treatment catalyst, wherein the water treatment catalyst comprises a chelating agent and a mixture of aluminum nitrate and ferric chloride in the molar ratio of 1:1-2, and the chelating agent is 5-50 ppm of diethyl triamine pentaacetic acid, 5-50 ppm of polyacrylic acid and hydroxamic acid5-50 ppm of sodium.
Further, the S1 culture conditions are: the temperature is 35-37 ℃, the rotating speed of the shaking table is 150-170 r/min, and the culture time is 36-48 h; the mass ratio of the composite bacteria to the additive is (80-90): 10-20.
The invention also provides a system for treating fecal sewage by microorganisms, which comprises: an aerobic tank, a sludge sedimentation tank, an enhanced dephosphorization constructed wetland, a water collecting tank, an ecological pond, an ultraviolet tank and a disinfection tank; the aerobic tank is internally provided with a plurality of partition boards, the bottom of the aerobic tank is provided with an aeration device, an automatic dosing device is arranged in the aerobic tank, and the aerobic tank is connected with the sludge sedimentation tank through a conveying pipeline; the reinforced dephosphorization constructed wetland comprises a filter layer, wherein a filter material is arranged in the filter layer, the filter material comprises one or more of ceramsite, coal ash, steel slag or crushed stone, and plants are planted on the filter layer; the sludge sedimentation tank is connected with a water distribution pipe capable of conveying sewage at the upper layer of the sludge sedimentation tank to the upper surface of the filter layer, the lower part of the filter layer is provided with a water collecting pipe, the water collecting pipe is provided with a water collecting hole, and the water collecting pipe conveys water in the water collecting pipe to the ecological pond; a water collecting tank capable of collecting rainwater is arranged around the ecological pond, the water collecting tank is higher than the water surface of the ecological pond, and a submerged filter belt capable of allowing water in the water collecting tank to flow into the ecological pond in a submerged mode is arranged between the water collecting tank and the ecological pond; the ultraviolet pool is connected with the disinfection pool through a conveying pipeline.
Further, the sludge sedimentation tank is any one of a advection sedimentation tank, a radial flow sedimentation tank, an inclined plate sedimentation tank or a high-density sedimentation tank.
Further, the filter layer include from bottom to top setting gradually bottom, intermediate level and top layer, the filter material on top is the haydite, the filter material on intermediate level is the mixture of coal ash and slag, the filter material on bottom is the rubble, plant on the filter layer plant in the top layer, the collector tube set up in the bottom.
Further, the bottom of the ecological pond is provided with an ecological covering layer, porous materials are arranged in the ecological covering layer for microorganism growth and propagation, and submerged plants are planted in the ecological covering layer.
Further, the water surface of the ecological pond is provided with an ecological floating island, plants are planted on the ecological floating island, and the ecological floating island is connected with a biological rope suspended in pond water.
Compared with the prior art, the invention has the beneficial effects that:
(1) The fecal sewage treatment method treats sewage through the microbial degradation ball, wherein the microbial degradation ball contains bacillus subtilis, enterococcus faecalis, saccharomycetes and an immobilization carrier, and three microorganisms, namely the bacillus subtilis, the enterococcus faecalis and the saccharomycetes, are co-generated in one environment by adopting a plurality of microbial symbiotic technologies, do not antagonize each other, rapidly propagate and can degrade pollutants with a plurality of components.
(2) According to the method for removing fecal sewage, disclosed by the invention, the baffle plate and the aeration device arranged in the aerobic tank are used for baffling the sewage to prolong the contact time of the sewage and the microbial degradation balls, so that the sewage is fully degraded by the microbial degradation balls.
(3) The bacillus subtilis, enterococcus faecalis and saccharomycetes are matched with each other in sewage to realize synergistic interaction, so that the excellent sewage purifying principle is as follows: the bacillus subtilis has rich enzyme systems, including protease, lipase and the like, and can degrade and remove pollutants such as organic acid, nitrogen-containing organic matters and the like under the aerobic condition; enterococcus faecalis mainly degrades various organic matters and absorbs ammonia nitrogen under the anoxic condition; yeast can absorb heavy metals and nitrogen, and can play a role under aerobic or anoxic conditions. The saccharomycete can be cooperated with bacillus subtilis under the aerobic condition, so that organic acid, nitrogen-containing inorganic matters and nitrogen-containing organic matters are degraded and heavy metals are absorbed; under the anaerobic condition, the saccharomycete and the enterococcus faecalis cooperate to degrade various organic matters and absorb ammonia nitrogen and heavy metals. Therefore, the environment-friendly microbial sewage treatment agent compounded by the three strains can play roles under various environmental conditions, and various water bodies are treated.
(4) According to the invention, the microbial degradation balls are added into the aerobic tank by adopting an automatic dosing device, and a dosing strategy set by the automatic dosing device is used for extracting water flow data and water images, so that accurate and quantitative dosing of the flowing water can be realized, accurate dosing of the medicines can be realized, and meanwhile, the adding amount of the microbial degradation balls can be regulated and controlled in real time according to the content of pollutants in the aerobic tank, and the high-efficiency treatment of fecal sewage can be realized.
(5) The immobilized microorganism technology has the advantages of reducing cost, improving efficiency, being strong in adaptability and the like, and provides an effective and innovative solution for fecal sewage treatment.
Drawings
FIG. 1 is a schematic block diagram of a system for treating fecal sewage by microorganisms provided by the present invention;
FIG. 2 is a schematic structural view of an aerobic tank according to the present invention;
FIG. 3 is a schematic structural diagram of the reinforced dephosphorization constructed wetland of the invention.
Wherein, the meanings of the main reference numerals in the figures are as follows: 1-partition board, 2-aeration device, 3-plant layer, 4-filter layer and 5-water collecting pipe.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
As shown in fig. 1 to 3, the present invention provides a system for treating fecal sewage by using microorganisms, the system comprising: an aerobic tank, a sludge sedimentation tank, an enhanced dephosphorization constructed wetland, a water collecting tank, an ecological pond, an ultraviolet tank and a disinfection tank; the aerobic tank is internally provided with a plurality of baffle plates 1, the bottom of the aerobic tank is provided with an aeration device 2, an automatic dosing device is arranged in the aerobic tank, and the aerobic tank is connected with the sludge sedimentation tank through a conveying pipeline; the reinforced dephosphorization constructed wetland comprises a filter layer 4, wherein a filter material is arranged in the filter layer 4, the filter material comprises one or more of ceramsite, coal ash, steel slag and crushed stone, and plants are planted on the filter layer 4; the sludge sedimentation tank is connected with a water distribution pipe which can convey sewage on the upper layer of the sludge sedimentation tank to the upper surface of the filter layer 4, a water collecting pipe 5 is arranged at the lower part of the filter layer 4, a water collecting hole is arranged on the water collecting pipe 5, and the water collecting pipe 5 conveys water in the water collecting pipe to the ecological pond; a water collecting tank capable of collecting rainwater is arranged around the ecological pond, the water collecting tank is higher than the water surface of the ecological pond, and a subsurface flow filter belt capable of allowing water in the water collecting tank to flow into the ecological pond in a subsurface manner is arranged between the water collecting tank and the ecological pond; the ultraviolet pool and the disinfection pool are connected through a conveying pipeline.
The sludge sedimentation tank is any one sedimentation tank of a advection sedimentation tank, a radial sedimentation tank, an inclined plate sedimentation tank or a high-density sedimentation tank. The filter layer 4 comprises a bottom layer, a middle layer and a surface layer which are sequentially arranged from bottom to top, the filter material of the surface layer is ceramsite, the filter material of the middle layer is a mixture of coal ash slag and steel slag, the filter material of the bottom layer is crushed stone, the plant layer 3 on the filter layer 4 is arranged on the surface layer, and the water collecting pipe 5 is arranged on the bottom layer. The bottom of the ecological pond is provided with an ecological covering layer, porous materials are arranged in the ecological covering layer for the growth and propagation of microorganisms, and submerged plants are planted in the ecological covering layer.
The water surface of the ecological pond is provided with an ecological floating island, plants are planted on the ecological floating island, and the ecological floating island is connected with a biological rope suspended in pond water.
Taking toilet sewage in a certain district in Nanjing city as an example, the method for treating fecal sewage by using the microorganism provided by the invention is used for treating the fecal sewage.
Experimental materials:
bacillus subtilis in active componentBacillus subtilis) Enterococcus faecalisEnterococcus faecalis) Purchased from beijing Bai Ou Bo Wei biotechnology Co., ltd; yeast @ sSaccharomyces cerevisiae) Purchased from shan schiff biotechnology limited.
Example 1
A method for treating fecal sewage by microorganisms, comprising the steps of:
(1) Introducing fecal sewage into an aerobic tank, then adding the microbial degradation balls into the aerobic tank by adopting an automatic dosing device, wherein,
the preparation method of the microbial degradation ball comprises the following steps:
s1: adding bacillus subtilis, enterococcus faecalis and saccharomycetes into culture medium respectivelyCulturing until the stage of the culture medium, wherein the preparation method of the culture medium comprises the following steps: 10 parts of beef extract, 30 parts of molasses, 10 parts of glucose, 10 parts of peptone and 2 parts of KH are added into 1000 parts of water in sequence 2 PO 4 And 4 parts of NaCl, regulating the pH value to 6.2, sterilizing at 120 ℃ for 20min, cooling to 37 ℃, adding a mixture comprising a chelating agent and aluminum nitrate and ferric chloride in a molar ratio of 1:1, wherein the chelating agent is a mixture of 5ppm of Diethyl Triamine Pentaacetic Acid (DTPA), 5ppm of polyacrylic acid (PAA) and 5ppm of sodium hydroxamate, and then culturing for 36h under the conditions that the temperature is 35 ℃ and the rotating speed of a shaking table is 150-170 r/min;
s2: adding an additive into the cultured composite bacteria, wherein the mass ratio of the composite bacteria to the additive is 80:10, and uniformly stirring to prepare a suspension;
s3: configuration of immobilized carrier liquid: mixing tryptone, cellulase, amylase, lipase, gelatin and the balance of purified water according to the mass ratio of 8:6:8:3:8, and uniformly mixing to obtain immobilized carrier liquid;
s4: mixing the suspension prepared in the step S2 according to the volume of the same proportion, uniformly stirring and mixing the suspension and the immobilized carrier liquid prepared in the step S3 according to the weight ratio of 15:100, and then placing the mixture in an oven for drying at 45 ℃ to prepare the nano-porous silica gel;
the automatic dosing device operates through a dosing strategy and comprises the following specific steps:
s10, before dosing, collecting sewage with each step chromaticity, accurately measuring the pollutant content in the step chromaticity, and obtaining the step chromaticity datakAnd contaminant content datamSubstituting the obtained product into data fitting software to obtain corresponding functions of the content of pollutants corresponding to the sewage with each unit chromaticity volumem(k) Thereby obtaining the needed medicament content of the sewage with each unit chromaticity volume corresponding to the pollutant contentl；
S20, height of the automatic dosing device from the aerobic tankhCollecting byObtaining the time for the dripping of the medicament from the automatic medicament adding device onto the sewage>WhereingGravity acceleration, flow rate of extracted sewagevObtaining the distance of the picture extraction position from the projection of the output end of the automatic dosing device to the aerobic tank>；
S30, collecting the sewage image, dividing the collected image into n water body square images, and collecting the chromaticity data of the water body square images to obtain chromaticity data which isWherein->Is the firstiObtaining the corresponding pollutant amount in the whole sewage image by the average value of the chromaticity of each water body square image>Thereby calculating the amount of the chemical to be added to the sewage image by multiplying the amount of the pollutant by the amount of the chemical to be added to the sewage of each unit chromaticity volume；
S40, extracting the width of the sewage imagedCalculating the time of the sewage area with the collected image passing through the automatic medicine adding deviceThe dosing speed of the automatic dosing device is +.>。
(2) The contact time of the fecal sewage and the microbial degradation balls is prolonged, so that the fecal sewage is fully degraded;
(3) Introducing the degraded sewage into a sludge sedimentation tank for sludge sedimentation treatment to obtain supernatant;
(4) The upper layer sewage in the sludge sedimentation tank is conveyed to a water distribution pipe, the water distribution pipe sprays the sewage on the upper surface of the reinforced dephosphorization artificial wetland, so that the sewage naturally infiltrates downwards and is converged into a water collecting pipe after being filtered by a filter layer and absorbed by plants;
(5) Draining water in the water collecting pipe into a water collecting tank, allowing the water in the water collecting tank to permeate through the undercurrent filtering belt and flow into the ecological pond, and continuing to purify under the wetland regulation effect of the ecological pond;
(6) Pumping pond water in the ecological pond by a water pump, then placing the pond water into an ultraviolet pond for ultraviolet irradiation, carrying out primary irradiation for 30min by using 200-300 nm ultraviolet light, and then carrying out secondary irradiation for 30min by using 300-400 nm ultraviolet light, wherein the primary irradiation temperature is 60-80 ℃, the stirring speed is 100-150 r/min, the secondary irradiation temperature is 20-50 ℃, and the stirring speed is 200-250 r/min;
(7) The water after ultraviolet treatment is placed in a disinfection tank, pathogenic bacteria carried in the sewage are removed through high temperature, and a domestic water pipeline is connected to the water outlet end of the disinfection tank.
Example 2
A method for treating fecal sewage by microorganisms, comprising the steps of:
(1) Introducing fecal sewage into an aerobic tank, then adding the microbial degradation balls into the aerobic tank by adopting an automatic dosing device, wherein,
the preparation method of the microbial degradation ball comprises the following steps:
s1: adding bacillus subtilis, enterococcus faecalis and saccharomycetes into a culture medium, wherein 10 parts of beef extract, 30 parts of molasses, 10 parts of glucose, 10 parts of peptone and 2 parts of KH are sequentially added into 1000 parts of water in the culture medium 2 PO 4 And 4 parts of NaCl, regulating the pH value to 6.5, sterilizing at 120 ℃ for 20min, cooling to 37 ℃, adding a mixture comprising a chelating agent and aluminum nitrate and ferric chloride in a molar ratio of 1:1, wherein the chelating agent is a mixture of 5ppm of Diethyl Triamine Pentaacetic Acid (DTPA), 5ppm of polyacrylic acid (PAA) and 5ppm of sodium hydroxamate, and then culturing for 40h under the conditions that the temperature is 35 ℃ and the rotating speed of a shaking table is 150-170 r/min;
s2: adding an additive into the cultured composite bacteria, wherein the mass ratio of the composite bacteria to the additive is 85:15, and uniformly stirring to prepare a suspension;
s3: configuration of immobilized carrier liquid: mixing tryptone, cellulase, amylase, lipase, gelatin and the balance of purified water according to the mass ratio of 8:6:8:3:8, and uniformly mixing to obtain immobilized carrier liquid;
s4: mixing the suspension obtained in the step S2 according to the volume of the same proportion, uniformly stirring and mixing the suspension with the immobilized carrier liquid prepared in the step S3 according to the weight ratio of 15:100, and then placing the mixture in an oven for drying at 45 ℃ to obtain the modified alumina;
the automatic dosing device is operated by a dosing strategy, and the specific steps of the dosing strategy are the same as in example 1;
(2) The contact time of the fecal sewage and the microbial degradation balls is prolonged, so that the fecal sewage is fully degraded;
(3) Introducing the degraded sewage into a sludge sedimentation tank for sludge sedimentation treatment to obtain supernatant;
(4) The upper layer sewage in the sludge sedimentation tank is conveyed to a water distribution pipe, the water distribution pipe sprays the sewage on the upper surface of the reinforced dephosphorization artificial wetland, so that the sewage naturally infiltrates downwards and is converged into a water collecting pipe after being filtered by a filter layer and absorbed by plants;
(5) Draining water in the water collecting pipe into a water collecting tank, allowing the water in the water collecting tank to permeate through the undercurrent filtering belt and flow into the ecological pond, and continuing to purify under the wetland regulation effect of the ecological pond;
(6) Pumping pond water in the ecological pond by a water pump, then placing the pond water into an ultraviolet pond for ultraviolet irradiation, performing primary irradiation for 40min by using 200-300 nm ultraviolet light, and performing secondary irradiation for 40min by using 300-400 nm ultraviolet light, wherein the primary irradiation temperature is 60-80 ℃ and the stirring speed is 100-150 r/min; the temperature of the second irradiation is 20-50 ℃, and the stirring speed is 200-250 r/min;
(7) The water after ultraviolet treatment is placed in a disinfection tank, pathogenic bacteria carried in the sewage are removed through high temperature, and a domestic water pipeline is connected to the water outlet end of the disinfection tank.
Example 3
A method for treating fecal sewage by microorganisms, comprising the steps of:
(1) Introducing fecal sewage into an aerobic tank, then adding the microbial degradation balls into the aerobic tank by adopting an automatic dosing device, wherein,
the preparation method of the microbial degradation ball comprises the following steps:
s1: adding bacillus subtilis, enterococcus faecalis and saccharomycetes into a culture medium, wherein 10 parts of beef extract, 30 parts of molasses, 10 parts of glucose, 10 parts of peptone and 2 parts of KH are sequentially added into 1000 parts of water in the culture medium 2 PO 4 And 4 parts of NaCl, regulating the pH value to 6.8, sterilizing at 120 ℃ for 20min, cooling to 37 ℃, adding a mixture comprising a chelating agent and aluminum nitrate and ferric chloride in a molar ratio of 1:1, wherein the chelating agent is a mixture of 5ppm of Diethyl Triamine Pentaacetic Acid (DTPA), 5ppm of polyacrylic acid (PAA) and 5ppm of sodium hydroxamate, and then culturing for 36h under the conditions that the temperature is 35 ℃ and the rotating speed of a shaking table is 150-170 r/min;
s2: adding an additive into the cultured composite bacteria, wherein the mass ratio of the composite bacteria to the additive is 90:20, and uniformly stirring to prepare a suspension;
s3: configuration of immobilized carrier liquid: mixing tryptone, cellulase, amylase, lipase, gelatin and the balance of purified water according to the mass ratio of 8:6:8:3:8, and uniformly mixing to obtain immobilized carrier liquid;
s4: mixing the suspension obtained in the step S2 according to the volume of the same proportion, uniformly stirring and mixing the suspension with the immobilized carrier liquid prepared in the step S3 according to the weight ratio of 15:100, and then placing the mixture in an oven for drying at 45 ℃ to obtain the modified alumina;
the automatic dosing device is operated by a dosing strategy, and the specific steps of the dosing strategy are the same as in example 1;
(2) The contact time of the fecal sewage and the microbial degradation balls is prolonged, so that the fecal sewage is fully degraded;
(3) Introducing the degraded sewage into a sludge sedimentation tank for sludge sedimentation treatment to obtain supernatant;
(4) The upper layer sewage in the sludge sedimentation tank is conveyed to a water distribution pipe, the water distribution pipe sprays the sewage on the upper surface of the reinforced dephosphorization artificial wetland, so that the sewage naturally infiltrates downwards and is converged into a water collecting pipe after being filtered by a filter layer and absorbed by plants;
(5) Draining water in the water collecting pipe into a water collecting tank, allowing the water in the water collecting tank to permeate through the undercurrent filtering belt and flow into the ecological pond, and continuing to purify under the wetland regulation effect of the ecological pond;
(6) Pumping pond water in the ecological pond by a water pump, then placing the pond water into an ultraviolet pond for ultraviolet irradiation, carrying out primary irradiation for 60min by using 200-300 nm ultraviolet light, and then carrying out secondary irradiation for 60min by using 300-400 nm ultraviolet light, wherein the primary irradiation temperature is 60-80 ℃, the stirring speed is 100-150 r/min, the secondary irradiation temperature is 20-50 ℃, and the stirring speed is 200-250 r/min;
(7) The water after ultraviolet treatment is placed in a disinfection tank, pathogenic bacteria carried in the sewage are removed through high temperature, and a domestic water pipeline is connected to the water outlet end of the disinfection tank.
Comparative example 1
A method for treating fecal sewage by microorganisms, comprising the steps of:
(1) Introducing fecal sewage into an aerobic tank, and then adding microbial degradation balls into the aerobic tank, wherein the preparation method of the microbial degradation balls comprises the following steps:
s1: adding bacillus subtilis, enterococcus faecalis and saccharomycetes into a culture medium, wherein 10 parts of beef extract, 30 parts of molasses, 10 parts of glucose, 10 parts of peptone and 2 parts of KH are sequentially added into 1000 parts of water in the culture medium 2 PO 4 And 4 parts of NaCl, regulating the pH value to 6.8, sterilizing at 120 ℃ for 20min, cooling to 37 ℃, adding a mixture comprising a chelating agent and aluminum nitrate and ferric chloride in a molar ratio of 1:1, wherein the chelating agent is a mixture of 5ppm of Diethyl Triamine Pentaacetic Acid (DTPA), 5ppm of polyacrylic acid (PAA) and 5ppm of sodium hydroxamate, and then culturing for 36h under the conditions that the temperature is 35 ℃ and the rotating speed of a shaking table is 150-170 r/min;
s2: adding an additive into the cultured composite bacteria, wherein the mass ratio of the composite bacteria to the additive is 90:20, and uniformly stirring to prepare a suspension;
s3: configuration of immobilized carrier liquid: the preparation method comprises the steps of mixing tryptone, cellulase, amylase, lipase, gelatin and purified water according to the mass ratio: the method comprises the steps of mixing tryptone, cellulase, amylase, lipase, gelatin=8%:6%:8%:3:8% and the balance of purified water, and uniformly stirring to obtain immobilized carrier liquid;
s4: mixing the suspension obtained in the step S2 according to the volume of the same proportion, uniformly stirring and mixing the suspension with the immobilized carrier liquid prepared in the step S3 according to the weight ratio of 15:100, and then placing the mixture in an oven for drying at 45 ℃ to obtain the modified alumina;
(2) The contact time of the fecal sewage and the microbial degradation balls is prolonged, so that the fecal sewage is fully degraded;
(3) Introducing the degraded sewage into a sludge sedimentation tank for sludge sedimentation treatment to obtain supernatant;
(4) The upper layer sewage in the sludge sedimentation tank is conveyed to a water distribution pipe, the water distribution pipe sprays the sewage on the upper surface of the reinforced dephosphorization artificial wetland, so that the sewage naturally infiltrates downwards and is converged into a water collecting pipe after being filtered by a filter layer and absorbed by plants;
(5) Draining water in the water collecting pipe into a water collecting tank, allowing the water in the water collecting tank to permeate through the undercurrent filtering belt and flow into the ecological pond, and continuing to purify under the wetland regulation effect of the ecological pond;
(6) Pumping pond water in the ecological pond by a water pump, then placing the pond water into an ultraviolet pond for ultraviolet irradiation, performing primary irradiation for 60min by using 200-300 nm ultraviolet light, and performing secondary irradiation for 60min by using 300-400 nm ultraviolet light, wherein the primary irradiation temperature is 60-80 ℃ and the stirring speed is 100-150 r/min; the temperature of the second irradiation is 20-50 ℃, and the stirring speed is 200-250 r/min;
(7) The water after ultraviolet treatment is placed in a disinfection tank, pathogenic bacteria carried in the sewage are removed through high temperature, and a domestic water pipeline is connected to the water outlet end of the disinfection tank.
Comparative example 2
A method for treating fecal sewage by microorganisms, comprising the steps of:
(1) Introducing the degraded sewage into a sludge sedimentation tank for sludge sedimentation treatment to obtain supernatant;
(2) The upper layer sewage in the sludge sedimentation tank is conveyed to a water distribution pipe, the water distribution pipe sprays the sewage on the upper surface of the reinforced dephosphorization artificial wetland, so that the sewage naturally infiltrates downwards and is converged into a water collecting pipe after being filtered by a filter layer and absorbed by plants;
(3) Draining water in the water collecting pipe into a water collecting tank, allowing the water in the water collecting tank to permeate through the undercurrent filtering belt and flow into the ecological pond, and continuing to purify under the wetland regulation effect of the ecological pond;
(4) Pumping pond water in the ecological pond by a water pump, then placing the pond water into an ultraviolet pond for ultraviolet irradiation, performing primary irradiation for 60min by using 200-300 nm ultraviolet light, and performing secondary irradiation for 60min by using 300-400 nm ultraviolet light, wherein the primary irradiation temperature is 60-80 ℃ and the stirring speed is 100-150 r/min; the temperature of the second irradiation is 20-50 ℃, and the stirring speed is 200-250 r/min. The method comprises the steps of carrying out a first treatment on the surface of the
(5) The water after ultraviolet treatment is placed in a disinfection tank, pathogenic bacteria carried in the sewage are removed through high temperature, and a domestic water pipeline is connected to the water outlet end of the disinfection tank.
The water quality before and after the treatment of various pollutants in the sewage is shown in table 1.
TABLE 1 Water quality test results of examples 1-3 and comparative examples 1-2 before and after treatment of fecal Sewage
The detection result of the treated sewage shows that the method has good effect on removing organic pollutants and nitrogen and phosphorus in the sewage, and after the treatment of the method, the contents of COD, total nitrogen, total phosphorus, ammonia nitrogen and nitrate nitrogen in the effluent are obviously reduced, and the effluent of the pond meets the national comprehensive sewage discharge secondary standard requirement.
In comparative example 1, the automatic chemical dosing device is compared with example 3 after being removed, and the sewage with different step chromaticities is not collected, and the pollutant content in the step chromaticities is accurately measured, so that the content of the added microbial degradation balls is in and out, and therefore, the degradation strength of various pollutant components in the sewage is not high. Comparative example 2 is to compare the fecal sewage treated after the aerobic tank is removed with example 3, and the degradation capacity is significantly lower than that of example 3.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (10)
1. A method for microbial treatment of fecal sewage comprising:
introducing fecal sewage into an aerobic tank, and then adding the microbial degradation balls into the aerobic tank by adopting an automatic dosing device;
the contact time of the fecal sewage and the microbial degradation balls is prolonged, so that the fecal sewage is fully degraded;
introducing the degraded sewage into a sludge sedimentation tank for sludge sedimentation treatment to obtain supernatant;
the upper layer sewage in the sludge sedimentation tank is conveyed to a water distribution pipe, the water distribution pipe sprays the sewage on the upper surface of the reinforced dephosphorization artificial wetland, so that the sewage naturally infiltrates downwards, and is converged into a water collecting pipe after being filtered by a filter layer and absorbed by plants;
draining water in the water collecting pipe into a water collecting tank, allowing the water in the water collecting tank to permeate through the undercurrent filtering belt and flow into the ecological pond, and continuing to purify the wet underground of the ecological pond;
pumping pool water in the ecological pool by a water pump, then placing the pool water into an ultraviolet pool for ultraviolet irradiation on a sewage body, performing primary irradiation for 30-60 min by using 200-300 nm ultraviolet light, and performing secondary irradiation for 30-60 min by using 300-400 nm ultraviolet light;
and placing the water subjected to ultraviolet treatment into a disinfection tank to remove pathogenic bacteria carried in the sewage, wherein a domestic water pipeline is connected to the water outlet end of the disinfection tank.
2. The method of treating fecal sewage by microorganisms according to claim 1, characterized in that the automatic dosing device is operated by a dosing strategy comprising the following specific steps:
s10, before dosing, collecting sewage with each step chromaticity, accurately measuring the pollutant content in the step chromaticity, and obtaining the step chromaticity datakAnd contaminant content datamSubstituting the obtained product into data fitting software to obtain corresponding functions of the content of pollutants corresponding to the sewage with each unit chromaticity volumeNumber of digitsm(k) Thereby obtaining the needed medicament content of the sewage with each unit chromaticity volume corresponding to the pollutant contentl；
S20, height of the automatic dosing device from the aerobic tankhCollecting byObtaining the time for the dripping of the medicament from the automatic medicament adding device onto the sewage>WhereingGravity acceleration, flow rate of extracted sewagevObtaining the distance of the picture extraction position from the projection of the output end of the automatic dosing device to the aerobic tank>；
S30, collecting the sewage image, dividing the collected image into n water body square images, and collecting the chromaticity data of the water body square images to obtain chromaticity data which isWherein->Is the firstiObtaining the corresponding pollutant amount in the whole sewage image by the average value of the chromaticity of each water body square image>Thereby calculating the amount of the chemical to be added to the sewage image by multiplying the amount of the pollutant by the amount of the chemical to be added to the sewage of each unit chromaticity volume；
S40, extracting the width of the sewage imagedCalculating the time of the sewage area with the collected image passing through the automatic medicine adding deviceThe dosing speed of the automatic dosing device is +.>。
3. The method for treating fecal sewage by microorganisms according to claim 1, wherein the method for prolonging the contact time of fecal sewage with the microorganism degradation balls comprises:
isolating the microbial degradation balls by using a plurality of partition plates arranged in the aerobic tank, so that each microbial degradation ball is isolated from each other;
aeration is carried out at the bottom of the aerobic tank, so that sewage in the aerobic tank passes through the bottom end and the top end of the adjacent partition boards in sequence under the blocking action of the partition boards to form up-and-down reciprocating baffling, thereby prolonging the contact time of fecal sewage and the microbial degradation balls.
4. The method for treating fecal sewage by microorganisms according to claim 1, wherein the microorganism degradation balls comprise an immobilization carrier, a complex degradation bacterium embedded in the immobilization carrier, and an additive supporting the structure of the microorganism degradation ball; the immobilized carrier is a mixture prepared from tryptone, cellulase, amylase, lipase and gelatin; the composite degrading bacteria comprise bacillus subtilis, enterococcus faecalis and saccharomycetes, wherein the ratio of the effective viable count of the bacillus subtilis to the enterococcus faecalis to the effective viable count of the saccharomycetes is 10:1:2, and the total effective viable count of the active ingredients is 1 multiplied by 10 9 CFU/ml; the additive is one of cellulose, 101 carrier or 6201 carrier.
5. The method for treating fecal sewage by using microorganisms according to claim 4, wherein the method for preparing the microorganism degradation ball comprises the steps of:
s1: adding bacillus subtilis, enterococcus faecalis and saccharomycetes into a culture medium for respectively culturing until the stages are reached;
s2: adding an additive into the cultured composite bacteria, and uniformly stirring to obtain a suspension;
s3: configuration of immobilized carrier liquid: mixing tryptone, cellulase, amylase, lipase, gelatin and purified water, stirring uniformly to obtain immobilized carrier liquid, wherein the mass ratio of the tryptone, the cellulase, the amylase, the lipase, the gelatin and the purified water is (8-10%) to (6-8%) to (8-10%) to (3-5%) to (8-10%) and the balance of purified water;
s4: mixing the suspension obtained in the step S2 according to the volume of the same proportion, uniformly stirring and mixing the suspension with the immobilized carrier liquid prepared in the step S3 according to the weight ratio of 15:100, and then placing the mixture in an oven for drying at 45 ℃ to obtain the nano-porous silica gel.
6. The method for treating fecal sewage by using a microorganism according to claim 5, wherein the preparation method of the culture medium in the step S1 is as follows: 10 parts of beef extract, 30 parts of molasses, 10 parts of glucose, 10 parts of peptone and 2 parts of KH are added into 1000 parts of water in sequence 2 PO 4 And 4 parts of NaCl, regulating the pH value to 6.2-6.8, sterilizing at 120 ℃ for 20min, cooling to 37 ℃, and adding a water treatment catalyst, wherein the water treatment catalyst comprises a chelating agent and a mixture of aluminum nitrate and ferric chloride in the molar ratio of 1:1-2, and the chelating agent is a mixture of 5-50 ppm of diethyl triamine pentaacetic acid, 5-50 ppm of polyacrylic acid and 5-50 ppm of sodium hydroxamate.
7. The method for treating fecal sewage by microorganisms according to claim 5, wherein the conditions of the cultivation in step S1 are: the temperature is 35-37 ℃, the rotating speed of the shaking table is 150-170 r/min, and the culture time is 36-48 h; the mass ratio of the complex bacteria to the additive in the step S2 is (80-90): 10-20.
8. A system for microbial treatment of fecal sewage, the system comprising: an aerobic tank, a sludge sedimentation tank, an enhanced dephosphorization constructed wetland, a water collecting tank, an ecological pond, an ultraviolet tank and a disinfection tank;
the aerobic tank is internally provided with a plurality of partition boards, the bottom of the aerobic tank is provided with an aeration device, an automatic dosing device is arranged in the aerobic tank, and the aerobic tank is connected with the sludge sedimentation tank through a conveying pipeline;
the reinforced dephosphorization constructed wetland comprises a filter layer, wherein a filter material is arranged in the filter layer, the filter material comprises one or more of ceramsite, coal ash, steel slag or crushed stone, and plants are planted on the filter layer; the sludge sedimentation tank is connected with a water distribution pipe capable of conveying sewage at the upper layer of the sludge sedimentation tank to the upper surface of the filter layer, the lower part of the filter layer is provided with a water collecting pipe, the water collecting pipe is provided with a water collecting hole, and the water collecting pipe conveys water in the water collecting pipe to the ecological pond;
a water collecting tank capable of collecting rainwater is arranged around the ecological pond, the water collecting tank is higher than the water surface of the ecological pond, and a submerged filter belt capable of allowing water in the water collecting tank to flow into the ecological pond in a submerged mode is arranged between the water collecting tank and the ecological pond;
the ultraviolet pool is connected with the disinfection pool through a conveying pipeline.
9. The system for treating fecal sewage by microorganisms according to claim 8, wherein the sludge sedimentation tank is any one of a advection sedimentation tank, a radial sedimentation tank, an inclined plate sedimentation tank or a high density sedimentation tank.
10. The system for treating fecal sewage by using microorganisms according to claim 8, wherein the filter layer comprises a bottom layer, a middle layer and a surface layer which are sequentially arranged from bottom to top, the filter material of the surface layer is ceramsite, the filter material of the middle layer is a mixture of coal ash and steel slag, the filter material of the bottom layer is crushed stone, plants on the filter layer are planted on the surface layer, and the water collecting pipe is arranged on the bottom layer.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104817160A (en) * | 2015-04-09 | 2015-08-05 | 中国矿业大学(北京) | Method for removing synthesis musk in sewage |
| CN111018133A (en) * | 2019-12-20 | 2020-04-17 | 深圳清谷环境科技有限公司 | Environment-friendly microbial sewage treatment agent and preparation method and application thereof |
| CN111204927A (en) * | 2020-01-17 | 2020-05-29 | 棕榈生态城镇发展股份有限公司 | Ecological public toilet sewage treatment circulating system and sewage treatment and recycling method |
| WO2021243733A1 (en) * | 2020-06-05 | 2021-12-09 | 南京德壹环境科技发展有限公司 | Sewage treatment apparatus with solid-liquid separation, and separation method thereof |
| CN115058371A (en) * | 2022-08-08 | 2022-09-16 | 淄博乐瑞高分子材料科技有限公司 | Efficient COD composite degrading microbial inoculum and preparation method and application thereof |
| CN116012701A (en) * | 2023-01-10 | 2023-04-25 | 河海大学 | Water treatment dosing control method and device based on alum blossom detection |
-
2023
- 2023-07-03 CN CN202310800955.4A patent/CN116621386A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104817160A (en) * | 2015-04-09 | 2015-08-05 | 中国矿业大学(北京) | Method for removing synthesis musk in sewage |
| CN111018133A (en) * | 2019-12-20 | 2020-04-17 | 深圳清谷环境科技有限公司 | Environment-friendly microbial sewage treatment agent and preparation method and application thereof |
| CN111204927A (en) * | 2020-01-17 | 2020-05-29 | 棕榈生态城镇发展股份有限公司 | Ecological public toilet sewage treatment circulating system and sewage treatment and recycling method |
| WO2021243733A1 (en) * | 2020-06-05 | 2021-12-09 | 南京德壹环境科技发展有限公司 | Sewage treatment apparatus with solid-liquid separation, and separation method thereof |
| CN115058371A (en) * | 2022-08-08 | 2022-09-16 | 淄博乐瑞高分子材料科技有限公司 | Efficient COD composite degrading microbial inoculum and preparation method and application thereof |
| CN116012701A (en) * | 2023-01-10 | 2023-04-25 | 河海大学 | Water treatment dosing control method and device based on alum blossom detection |
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