CN114735809A - Sewage biological treatment agent and preparation method thereof - Google Patents
Sewage biological treatment agent and preparation method thereof Download PDFInfo
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- CN114735809A CN114735809A CN202210278309.1A CN202210278309A CN114735809A CN 114735809 A CN114735809 A CN 114735809A CN 202210278309 A CN202210278309 A CN 202210278309A CN 114735809 A CN114735809 A CN 114735809A
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- 239000010865 sewage Substances 0.000 title claims abstract description 53
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 123
- 239000011347 resin Substances 0.000 claims abstract description 64
- 229920005989 resin Polymers 0.000 claims abstract description 64
- 239000000945 filler Substances 0.000 claims abstract description 52
- 239000002068 microbial inoculum Substances 0.000 claims abstract description 50
- 239000010902 straw Substances 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000002699 waste material Substances 0.000 claims abstract description 26
- 239000002131 composite material Substances 0.000 claims abstract description 21
- 241000609240 Ambelania acida Species 0.000 claims abstract description 19
- 235000007164 Oryza sativa Nutrition 0.000 claims abstract description 19
- 239000010905 bagasse Substances 0.000 claims abstract description 19
- 235000015097 nutrients Nutrition 0.000 claims abstract description 19
- 239000000843 powder Substances 0.000 claims abstract description 19
- 235000009566 rice Nutrition 0.000 claims abstract description 19
- 239000002689 soil Substances 0.000 claims abstract description 18
- 229920002125 Sokalan® Polymers 0.000 claims abstract description 17
- 239000004584 polyacrylic acid Substances 0.000 claims abstract description 17
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 16
- 235000016709 nutrition Nutrition 0.000 claims abstract description 13
- 239000003513 alkali Substances 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000010903 husk Substances 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims abstract description 6
- 238000005406 washing Methods 0.000 claims abstract description 6
- 241000235342 Saccharomycetes Species 0.000 claims abstract description 3
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 36
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 21
- 239000002808 molecular sieve Substances 0.000 claims description 19
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 19
- 238000000855 fermentation Methods 0.000 claims description 18
- 230000004151 fermentation Effects 0.000 claims description 18
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 18
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 18
- 241000193830 Bacillus <bacterium> Species 0.000 claims description 14
- 241000108664 Nitrobacteria Species 0.000 claims description 14
- 241000589516 Pseudomonas Species 0.000 claims description 12
- 239000005995 Aluminium silicate Substances 0.000 claims description 9
- 235000012211 aluminium silicate Nutrition 0.000 claims description 9
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 229920000742 Cotton Polymers 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 5
- 240000008042 Zea mays Species 0.000 claims description 4
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims description 4
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims description 4
- 235000005822 corn Nutrition 0.000 claims description 4
- 241001446247 uncultured actinomycete Species 0.000 claims description 4
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 3
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 3
- 238000004065 wastewater treatment Methods 0.000 claims 7
- 240000007594 Oryza sativa Species 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 241000209094 Oryza Species 0.000 abstract description 17
- 244000005700 microbiome Species 0.000 description 24
- 230000000694 effects Effects 0.000 description 22
- 230000000052 comparative effect Effects 0.000 description 19
- 238000000746 purification Methods 0.000 description 18
- 241000186361 Actinobacteria <class> Species 0.000 description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 230000000813 microbial effect Effects 0.000 description 9
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 8
- 241000894006 Bacteria Species 0.000 description 7
- 239000011148 porous material Substances 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 239000003344 environmental pollutant Substances 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 4
- 230000007774 longterm Effects 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- 239000002734 clay mineral Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- VTEIFHQUZWABDE-UHFFFAOYSA-N 2-(2,5-dimethoxy-4-methylphenyl)-2-methoxyethanamine Chemical compound COC(CN)C1=CC(OC)=C(C)C=C1OC VTEIFHQUZWABDE-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003911 water pollution Methods 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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
- C02F3/105—Characterized by the chemical composition
- C02F3/108—Immobilising gels, polymers or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/20—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by expressing the material, e.g. through sieves and fragmenting the extruded length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/28—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic using special binding agents
-
- 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
- C02F3/10—Packings; Fillings; Grids
- C02F3/105—Characterized by the chemical composition
- C02F3/107—Inorganic materials, e.g. sand, silicates
-
- 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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/06—Nutrients for stimulating the growth of microorganisms
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Microbiology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Biodiversity & Conservation Biology (AREA)
- Water Supply & Treatment (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The application relates to the field of sewage treatment, and particularly discloses a biological sewage treatment agent and a preparation method thereof, wherein the biological sewage treatment agent comprises the following raw materials: porous PE resin filler, polyacrylic acid gel, a silane coupling agent, inorganic soil, rice hull powder, bagasse, straw waste and a composite microbial inoculum. The preparation method of the treating agent comprises the following preparation steps: step 1, placing porous PE resin filler in alkali liquor, heating and stirring, then washing the alkali liquor with water, and drying the water for later use; step 2, fermenting the rice husk powder, bagasse, straw waste and saccharomycetes to prepare a nutritional agent; and 3, extruding and granulating the inorganic soil, the nutrient, the porous PE resin filler treated in the step 1, the silane coupling agent, the polyacrylic acid gel and the composite microbial inoculum to obtain the treating agent. By adopting the treating agent prepared by the method, the treatment period can be effectively shortened, the COD removal rate can be effectively improved, and the treatment efficiency on sewage is improved.
Description
Technical Field
The application relates to the field of sewage treatment, in particular to a biological sewage treatment agent and a preparation method thereof.
Background
In the sewage treatment process, the microorganisms are mostly adopted for purifying the sewage at present, and the microorganisms are directly put into the water body aiming at the water quality with small water pollution degree. If the water body pollution degree is large, the microorganisms need to be cultured and increased, and then put in.
As disclosed in patent application publication No. CN111892176A, a method for removing pollutants from wastewater comprises the following steps: (1) measuring the water quality of the wastewater to be treated; (2) preparing a compound microbial agent; (3) preparing modified suspended filler solidified with compound microbial agent; (4) filling the modified suspended filler solidified with the compound microbial agent into a container with at least one open end; (5) and (3) putting the container filled with the modified suspended filler solidified with the compound microbial agent into the wastewater for removing pollutants. The composite microbial agent is solidified on the modified suspended filler by adopting an adsorption method to prepare the modified suspended filler solidified with the composite microbial agent, pollutants in water are degraded by the composite microbial agent on the modified suspended filler, and the main degraded pollutant types are COD, BOD and nitrogen and phosphorus organic pollutants.
However, in the practical application process, the bacteria loaded on the filler are influenced by the bacteria carried in the sewage or the water, so that the bacteria grow and propagate slowly, and even a large amount of bacteria die, and the sewage treatment period is long, and the purification effect is poor.
Disclosure of Invention
The application provides a biological sewage treatment agent and a preparation method thereof, which can effectively shorten the sewage treatment period, improve the sewage treatment efficiency and simultaneously improve the sewage purification effect.
In a first aspect, the application provides a biological sewage treatment agent which adopts the following technical scheme:
a sewage biological treatment agent comprises the following raw materials in parts by weight: 30-45 parts of porous PE resin filler, 7-12 parts of polyacrylic acid gel, 0.1-0.6 part of silane coupling agent, 3-8 parts of inorganic soil, 5-10 parts of rice husk powder, 8-15 parts of bagasse, 5-10 parts of straw waste and 20-35 parts of composite microbial inoculum;
the porous PE resin filler comprises the following preparation steps: and (2) melting the PE resin, adding 1.05-1.7wt% of pore-forming agent based on the weight of the PE resin, uniformly mixing, preserving heat for 1-2h, injecting into a particle mold, and completely solidifying to obtain the porous PE resin filler.
By adopting the technical scheme, the PE resin is added with the pore-forming agent in a molten state, and the pore-forming agent is favorable for enabling the PE resin to have good pores, so that porous PE resin filler is formed, and the microbial load and propagation are favorable. The inorganic soil is mainly a clay mineral, has larger specific surface and adsorption energy, and also has good bonding performance, can bond each raw material component together better, and the inside forms a stable structure, and the polyacrylic acid gel can be adjusted according to the pH environment of a water body, is matched with the inorganic soil and a silane coupling agent, and is used for jointly adjusting nutrients in a treating agent and the living environment of microorganisms, so that the long-term stability of the growth and the propagation of the microorganisms is improved, the treatment efficiency of the sewage is improved, and the treatment period is shortened.
The rice hull powder, bagasse and straw waste can provide effective nutrients for the propagation of microorganisms, and the porous PE resin filler can effectively reduce the loss of nutrients, so that the rapid propagation of the microorganisms is promoted, the treatment period is further shortened, and the sewage purification effect can be improved.
Preferably, the pore-forming agent is selected from at least two of graphite powder, sodium bicarbonate and microporous molecular sieve.
By adopting the technical scheme, the graphite powder and the microporous molecular sieve are beneficial to formation of pores in resin, have excellent lubricity, improve the dispersion performance of each component and can form uniform pores. The sodium bicarbonate is slowly decomposed at a certain temperature to form carbon dioxide gas, dense pores are further formed in the resin, and the porosity of the porous PE resin is improved, so that the load and the propagation of microorganisms are facilitated, the loss of nutrients is reduced, and the purification effect of sewage treatment is improved.
Preferably, the pore-forming agent is graphite powder, sodium bicarbonate and a microporous molecular sieve, and the mass ratio of the graphite powder to the sodium bicarbonate to the microporous molecular sieve is (0.3-0.6): (0.05-0.1): (0.7-1).
By adopting the technical scheme, the dosage ratio of the graphite powder, the sodium bicarbonate and the microporous molecular sieve is further optimized, so that uniform pores can be formed in the filler.
Preferably, the complex microbial inoculum is a bacillus microbial inoculum, a nitrobacteria microbial inoculum, a pseudomonas microbial inoculum and an actinomycetes microbial inoculum.
The mass ratio of the bacillus agent to the nitrobacteria agent to the pseudomonas agent to the actinomycetes agent is (6-8.5) to (5-9) to (2-5) to (7-12.5), and various microbial strains are selected for cooperation, so that the sewage treatment period is effectively shortened, and the sewage purification effect can be improved.
Preferably, the viable count of the bacillus agent, the nitrobacteria agent, the pseudomonas agent and the actinomycete agent is not less than 1 x 109cfu/mL。
By adopting the technical scheme, the viable count of active ingredients in each microbial inoculum is ensured, so that the effect of the treating agent is ensured to be exerted, and the treatment efficiency and the purification effect of sewage are improved.
Preferably, the inorganic soil is one of kaolin or montmorillonite.
By adopting the technical scheme, the selection of the inorganic soil is optimized, and the raw material substances are favorably cemented together, so that the growth, absorption and nutrient reproduction of microorganisms are favorably promoted, and the purification effect and the treatment efficiency of sewage treatment are improved.
Preferably, the straw waste is at least one of straw, corn stalk and cotton stalk.
By adopting the technical scheme, the components of the straw waste are optimized, so that the carbon-nitrogen ratio of the nutrient components can be adjusted, and the microorganisms can be promoted to absorb and utilize the nutrients.
In a second aspect, the application provides a preparation method of a biological sewage treatment agent, which adopts the following technical scheme: a preparation method of a sewage biological treatment agent comprises the following preparation steps:
step 1, placing porous PE resin filler in alkali liquor, heating to 50-60 ℃, stirring for 5-15min, then washing the alkali liquor attached to the surface of the porous PE resin filler with water, and drying the water for later use;
step 2, fermenting the rice husk powder, bagasse, straw waste and saccharomycetes to prepare a nutritional agent;
and 3, extruding and granulating the inorganic soil, the nutrient, the porous PE resin filler treated in the step 1, the silane coupling agent, the polyacrylic acid gel and the composite microbial inoculum to obtain the treating agent.
By adopting the technical scheme, the porous PE resin filler is placed in warm alkali liquor, and has a certain etching effect on the surface of the porous PE resin filler, so that certain pores can be generated on the surface of the porous PE resin filler, the surface area of the porous PE resin filler is increased, the apparent performance of the porous PE resin filler is improved, and the porous PE resin filler is matched with inorganic soil under the action of polyacrylic acid gel, so that the stability of the treating agent is improved, microorganisms can play a role in long-acting and stable performance, and the sewage treatment efficiency and the sewage purification effect are effectively improved.
The method has the advantages that the rice hull powder, the bagasse, the straw waste and the yeast are subjected to fermentation treatment, so that the rice hull powder, the bagasse, the straw waste and the yeast have rich nutrients and are used as nutritional agents, organic matters with a cementing effect can be generated in a fermentation reaction process, the stability of the internal structure of the treatment agent is improved to a certain extent, the nutrient loss is reduced, sufficient carbon sources, nitrogen sources and the like are provided for the growth and the propagation of microorganisms, the mass propagation of the microorganisms is promoted in a short time, and the treatment efficiency of the sewage and the purification effect of the sewage are effectively improved.
Preferably, the fermentation temperature in the step 2 is 35-45 ℃, and the fermentation time is 8-10 h.
By adopting the technical scheme, the fermentation is carried out for a proper time at a proper fermentation temperature, so that the generation and accumulation of available nutrients are facilitated, the mass propagation of microorganisms in a short time is facilitated, and the sewage treatment efficiency and the sewage purification effect are improved.
In summary, the present application has the following beneficial effects:
1. adding a pore-forming agent into the PE resin in a molten state, wherein the pore-forming agent is favorable for enabling the PE resin to have good pores, and forming porous PE resin filler so as to be favorable for microorganism loading and propagation. The inorganic soil is mainly a clay mineral, has larger specific surface and adsorption energy and good bonding performance, can bond all raw material components together, forms a stable structure inside, can be adjusted according to the pH environment of a water body, is matched with the inorganic soil and a silane coupling agent, adjusts nutrients in a treating agent and the living environment of microorganisms together, and improves the long-term stability of the growth and the propagation of the microorganisms. The rice hull powder, the bagasse and the straw waste can provide effective nutrients for the propagation of microorganisms, promote the rapid propagation of the microorganisms, further improve the purification effect of sewage treatment and shorten the treatment period.
2. The method has the advantages that the rice hull powder, the bagasse, the straw waste and the yeast are subjected to fermentation treatment, so that the rice hull powder, the bagasse, the straw waste and the yeast have rich nutrients and are used as nutritional agents, organic matters with a cementing effect can be generated in a fermentation reaction process, the stability of the internal structure of the treatment agent is improved to a certain extent, the nutrient loss is reduced, sufficient carbon sources, nitrogen sources and the like are provided for the growth and the propagation of microorganisms, the mass propagation of the microorganisms is promoted in a short time, and the treatment efficiency of the sewage and the purification effect of the sewage are effectively improved.
Detailed Description
The present application will be described in further detail with reference to examples.
The raw materials used in the application are all common commercial raw materials.
Examples
Example 1
The sewage biological treatment agent comprises the following raw materials: 30kg of porous PE resin filler, 7kg of polyacrylic acid gel, 0.1kg of silane coupling agent, 3kg of kaolin, 5kg of rice husk powder, 8kg of bagasse, 5kg of straw waste and 20kg of composite microbial inoculum;
the straw waste is 3kg of straw and 2kg of cornstalk, the composite microbial inoculum is 6kg of bacillus microbial inoculum, 5kg of nitrobacteria microbial inoculum, 2kg of pseudomonas microbial inoculum and 7kg of actinomycetes microbial inoculum;
the number of viable bacteria of the bacillus agent, the nitrobacteria agent, the pseudomonas agent and the actinomycetes agent is not less than 1 x 109cfu/mL; the preparation method of the sewage biological treatment agent comprises the following preparation steps:
step 1, melting PE resin, adding 1.05 wt% of pore-forming agent based on the weight of the PE resin, uniformly mixing, keeping the temperature for 2h, injecting the mixture into a particle mold, completely solidifying to obtain porous PE resin filler, placing the porous PE resin filler into a 10% sodium hydroxide solution, heating to 50 ℃, stirring for 15min, then washing alkali liquor attached to the surface of the porous PE resin filler with water, and drying the water for later use; the pore-forming agent is graphite powder and a microporous molecular sieve, wherein the mass ratio of the graphite powder to the microporous molecular sieve is 0.5: 0.9;
step 2, fermenting 5kg of rice hull powder, 8kg of bagasse, 5kg of straw waste and 0.5kg of yeast, wherein the fermentation temperature is 45 ℃ and the fermentation time is 8 hours to prepare the nutritional agent;
and 3, extruding and granulating the kaolin, the nutritional agent, the porous PE resin filler treated in the step 1, the silane coupling agent, the polyacrylic acid gel and the composite microbial inoculum to obtain the treating agent.
Example 2
The sewage biological treatment agent comprises the following raw materials: 45kg of porous PE resin filler, 12kg of polyacrylic acid gel, 0.6kg of silane coupling agent, 8kg of kaolin, 10kg of rice husk powder, 15kg of bagasse, 10kg of straw waste and 35kg of composite microbial inoculum; the straw waste is 5kg of straw and 5kg of cotton stalk, the composite microbial inoculum is 8.5kg of bacillus microbial inoculum, 9kg of nitrobacteria microbial inoculum, 5kg of pseudomonas microbial inoculum and 12.5kg of actinomycetes microbial inoculum; the number of viable bacteria of the bacillus agent, the nitrobacteria agent, the pseudomonas agent and the actinomycetes agent is not less than 1 x 109cfu/mL；
The preparation method of the sewage biological treatment agent comprises the following preparation steps:
step 1, melting PE resin, adding 1.7wt% of pore-forming agent based on the weight of the PE resin, uniformly mixing, keeping the temperature for 1h, injecting the mixture into a particle mold, completely solidifying to obtain porous PE resin filler, placing the porous PE resin filler into a 10% sodium hydroxide solution, heating to 60 ℃, stirring for 5min, then washing alkali liquor attached to the surface of the porous PE resin filler with water, and drying the water for later use; the pore-forming agent is sodium bicarbonate and a microporous molecular sieve, wherein the mass ratio of the sodium bicarbonate to the microporous molecular sieve is 0.5: 0.9;
step 2, fermenting 10kg of rice hull powder, 15kg of bagasse, 10kg of straw waste and 1kg of yeast, wherein the fermentation temperature is 35 ℃, and the fermentation time is 10 hours to prepare the nutritional agent;
and 3, extruding and granulating the kaolin, the nutritional agent, the porous PE resin filler treated in the step 1, the silane coupling agent, the polyacrylic acid gel and the composite microbial inoculum to obtain the treating agent.
Example 3
The sewage biological treatment agent comprises the following raw materials: 40kg of porous PE resin filler, 10kg of polyacrylic acid gel, 0.5kg of silane coupling agent, 6.5kg of kaolin, 7kg of rice husk powder, 12kg of bagasse, 9kg of straw waste and 35kg of composite microbial inoculum; the straw wastes are 5kg of corn stalks and 4kg of cotton stalks, the composite microbial inoculum is 8.5kg of bacillus microbial inoculum, 9kg of nitrobacteria microbial inoculum, 5kg of pseudomonas microbial inoculum and 12.5kg of actinomycetes microbial inoculum;
the number of viable bacteria of the bacillus agent, the nitrobacteria agent, the pseudomonas agent and the actinomycetes agent is not less than 1 x 109cfu/mL; the preparation method of the biological sewage treatment agent comprises the following preparation steps:
step 1, melting PE resin, adding 1.45 wt% of pore-forming agent based on the weight of the PE resin, uniformly mixing, keeping the temperature for 1.5h, injecting the mixture into a particle mold, completely solidifying to obtain porous PE resin filler, placing the porous PE resin filler into a 10% sodium hydroxide solution, heating to 55 ℃, stirring for 10min, then washing alkali liquor attached to the surface of the porous PE resin filler with water, and drying the water for later use; the pore-forming agent is graphite powder and sodium bicarbonate, wherein the mass ratio of the graphite powder to the sodium bicarbonate is 0.5: 0.9;
step 2, fermenting 7kg of rice hull powder, 12kg of bagasse, 9kg of straw waste and 0.8kg of yeast, wherein the fermentation temperature is 40 ℃, and the fermentation time is 9 hours to prepare the nutritional agent;
and 3, extruding and granulating the kaolin, the nutritional agent, the porous PE resin filler treated in the step 1, the silane coupling agent, the polyacrylic acid gel and the composite microbial inoculum to obtain the treating agent.
Example 4
The difference from the embodiment 3 is that the pore-forming agent is graphite powder, sodium bicarbonate and microporous molecular sieve, the mass ratio of the graphite powder, the sodium bicarbonate and the microporous molecular sieve is 0.3:0.05:0.7, and the rest is the same as the embodiment 3.
Example 5
The difference from the embodiment 4 is that the mass ratio of the graphite powder, the sodium bicarbonate and the microporous molecular sieve is 0.6:0.1:1, and the rest is the same as the embodiment 4.
Example 6
The difference from the embodiment 4 is that the mass ratio of the graphite powder, the sodium bicarbonate and the microporous molecular sieve is 0.5:0.09:0.85, and the rest is the same as the embodiment 4.
Example 7
The difference from the embodiment 4 is that the mass ratio of the graphite powder, the sodium bicarbonate and the microporous molecular sieve is 0.1:0.04:1.3, and the rest is the same as the embodiment 4.
Example 8
The difference from example 6 is that the straw-based waste is 3.5kg of straw, 2.5kg of corn straw and 2kg of cotton straw, and the rest is the same as example 6.
Example 9
The difference from example 6 is that the inorganic clay is montmorillonite, and the rest is the same as example 6.
Example 10
The difference from the embodiment 6 is that the composite microbial inoculum is 7kg of bacillus microbial inoculum, 8kg of nitrobacteria microbial inoculum, 4.5kg of pseudomonas microbial inoculum and 10.5kg of actinomycetes microbial inoculum; the rest is the same as example 6.
Example 11
The difference from the example 9 is that the composite microbial inoculum is 7kg of bacillus microbial inoculum, 12.5kg of nitrobacteria microbial inoculum and 10.5kg of actinomycetes microbial inoculum, and the rest is the same as the example 9.
Comparative example
Comparative example 1
The difference from example 10 is that the porous PE resin filler was replaced with an equal amount of PE resin, and the balance was the same as in example 10.
Comparative example 2
The difference from example 10 is that the same as example 10 was conducted except that no inorganic soil was added.
Comparative example 3
The difference from example 10 is that no polyacrylic acid gel was added, and the rest was the same as example 10.
Comparative example 4
The difference from the embodiment 10 is that the preparation method of the sewage biological treatment agent comprises the following preparation steps:
step 1, melting PE resin, adding 1.05 wt% of pore-forming agent based on the weight of the PE resin, uniformly mixing, keeping the temperature for 1.5h, injecting into a particle mold, and completely solidifying to obtain porous PE resin filler;
step 2, fermenting the rice hull powder, the bagasse, the straw waste and the yeast at the fermentation temperature of 40 ℃ for 9 hours to prepare the nutritional agent;
step 3, mixing and homogenizing kaolin, a nutritional agent, the porous PE resin filler prepared in the step 1, a silane coupling agent, polyacrylic acid gel and a composite microbial inoculum to prepare a treating agent;
the rest is the same as in example 10.
Performance detection
The treatment agents obtained in examples 1 to 11 and comparative examples 1 to 4 were placed in water samples each having a COD of 300ppm in equal amounts, and the water quality after treatment with the treatment agents obtained in examples 1 to 10 and comparative examples 1 to 4 was analyzed by a COD meter under the same water quality and amount, and the COD removal rate was calculated and the results are shown in table 1.
The treating agents prepared in examples 1 to 11 and comparative examples 1 to 4 were each placed in an equal amount in a water sample having a COD of 100ppm, and the treating time required for the treating agents prepared in examples 1 to 10 and comparative examples 1 to 4 was measured when the COD of 20ppm was found to be in the water sample under the same water quality and water amount by the COD meter, and the results are shown in table 1.
TABLE 1 test results
| COD removal Rate/%) | Treatment time/h | |
| Example 1 | 82.3 | 4.9 |
| Example 2 | 81.5 | 4.8 |
| Example 3 | 82.9 | 4.75 |
| Example 4 | 84.2 | 4.63 |
| Example 5 | 83.6 | 4.7 |
| Example 6 | 85.1 | 4.41 |
| Example 7 | 83.1 | 4.64 |
| Example 8 | 87.7 | 4.22 |
| Example 9 | 85.6 | 4.5 |
| Example 10 | 90.5 | 4.03 |
| Example 11 | 87.1 | 4.39 |
| Comparative example 1 | 69.8 | 8.7 |
| Comparative example 2 | 66.4 | 9.1 |
| Comparative example 3 | 64.9 | 9.25 |
| Comparative example 4 | 62.3 | 9.6 |
Through the examples 1-11, it can be seen that the treatment agent prepared by the method can effectively shorten the treatment period and improve the treatment efficiency, and can effectively improve the COD removal rate and improve the sewage purification effect. In example 4, graphite powder, sodium bicarbonate and a microporous molecular sieve are used as pore-forming agents, and the treatment efficiency and the purification effect of the treatment agent prepared by combining two components are better than those of the treatment agent prepared by combining two components in example 3. In example 7, although graphite powder, sodium bicarbonate and microporous molecular sieve are selected, the use ratio of each component is not good enough, so that the treatment period of the treating agent on sewage is prolonged, and the purification effect on sewage is reduced, therefore, each raw material component in the pore-forming agent needs to be in a specific ratio to be better effective. In example 11, only a bacillus agent, a nitrobacteria agent, and an actinomycete agent were selected as the complex agent, and even if the amount of the final complex agent was the same, the quality of the treatment agent prepared in example 11 was reduced.
It can be seen from example 10 and comparative example 1 in combination with table 1 that in comparative example 1, only the common PE resin is used as a filler, and neither the complex microbial inoculum nor the nutrients formed after fermentation can be loaded well, so that the microbial inoculum is lost and the propagation speed is slow during the use of the treating agent, and the long-term stability of the growth and propagation of microorganisms is poor, which leads to a significant increase in the treatment period of the treating agent prepared in comparative example 1, and the removal rate of COD is also poor, and the purification effect of sewage is significantly reduced.
It can be seen from example 10 and comparative examples 2 to 3 in combination with Table 1 that the treatment agent intended in the present application could not be obtained in either the absence of inorganic soil or the absence of polyacrylic acid gel in the raw material components, and the treatment efficiency of the treatment agents obtained in comparative examples 2 and 3 was significantly reduced, while the treatment cycle time for the same sewage treatment was significantly increased. The inorganic soil is mainly a clay mineral, has larger specific surface and adsorption energy and good bonding performance, can bond all raw material components together, forms a stable structure inside, can be adjusted according to the pH environment of a water body, is matched with the inorganic soil and a silane coupling agent, adjusts nutrients in a treating agent and the living environment of microorganisms together, improves the long-term stability of the growth and the reproduction of the microorganisms, and further effectively improves the purification effect and the treatment efficiency of sewage.
As can be seen from example 10 and comparative example 4 in combination with table 1, in step 1, the porous PE resin filler is prepared without being treated with warm alkali solution, and in step 3, the raw material components are directly and uniformly mixed, and after being put into use, the raw material components can only act alone and cannot cooperate with each other, so that the treatment cycle of sewage is significantly prolonged, and the purification effect of sewage is significantly reduced.
The specific embodiments are only for explaining the present application and are not limiting to the present application, and those skilled in the art can make modifications to the embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent law within the scope of the claims of the present application.
Claims (9)
1. The biological sewage treating agent is characterized by comprising the following raw materials in parts by weight: 30-45 parts of porous PE resin filler, 7-12 parts of polyacrylic acid gel, 0.1-0.6 part of silane coupling agent, 3-8 parts of inorganic soil, 5-10 parts of rice husk powder, 8-15 parts of bagasse, 5-10 parts of straw waste and 20-35 parts of composite microbial inoculum;
the porous PE resin filler comprises the following preparation steps: and (2) melting the PE resin, adding 1.05-1.7wt% of pore-forming agent based on the weight of the PE resin, uniformly mixing, preserving heat for 1-2h, injecting into a particle mold, and completely solidifying to obtain the porous PE resin filler.
2. The biological wastewater treatment agent according to claim 1, wherein: the pore-forming agent is selected from at least two of graphite powder, sodium bicarbonate and microporous molecular sieve.
3. The biological wastewater treatment agent according to claim 2, wherein: the pore-forming agent is graphite powder, sodium bicarbonate and a microporous molecular sieve, and the mass ratio of the graphite powder to the sodium bicarbonate to the microporous molecular sieve is (0.3-0.6) to (0.05-0.1) to (0.7-1).
4. The biological wastewater treatment agent according to claim 1, wherein: the compound microbial inoculum is a bacillus microbial inoculum, a nitrobacteria microbial inoculum, a pseudomonas microbial inoculum and an actinomycete microbial inoculum.
5. The biological wastewater treatment agent according to claim 4, wherein: the viable count of the bacillus agent, the nitrobacteria agent, the pseudomonas agent and the actinomycete agent is not less than 1 × 109 cfu/mL.
6. The biological wastewater treatment agent according to any one of claims 1 to 5, wherein: the inorganic soil is one of kaolin or montmorillonite.
7. The biological wastewater treatment agent according to any one of claims 1 to 5, wherein: the straw waste is at least one of straw, corn stalk and cotton stalk.
8. The method for producing a biological wastewater treatment agent according to any one of claims 1 to 7, wherein: the preparation method comprises the following preparation steps:
step 1, placing porous PE resin filler in alkali liquor, heating to 50-60 ℃, stirring for 5-15min, then washing the alkali liquor attached to the surface of the porous PE resin filler with water, and drying the water for later use;
step 2, fermenting the rice husk powder, bagasse, straw waste and saccharomycetes to prepare a nutritional agent;
and 3, extruding and granulating the inorganic soil, the nutrient, the porous PE resin filler treated in the step 1, the silane coupling agent, the polyacrylic acid gel and the composite microbial inoculum to obtain the treating agent.
9. The method for preparing a biological sewage treatment agent according to claim 8, wherein: the fermentation temperature in the step 2 is 35-45 ℃, and the fermentation time is 8-10 h.
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