CN115055483A - Kitchen waste treatment process - Google Patents
Kitchen waste treatment process Download PDFInfo
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- CN115055483A CN115055483A CN202210690724.8A CN202210690724A CN115055483A CN 115055483 A CN115055483 A CN 115055483A CN 202210690724 A CN202210690724 A CN 202210690724A CN 115055483 A CN115055483 A CN 115055483A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/30—Destroying solid waste or transforming solid waste into something useful or harmless involving mechanical treatment
- B09B3/35—Shredding, crushing or cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/60—Biochemical treatment, e.g. by using enzymes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B2101/00—Type of solid waste
- B09B2101/70—Kitchen refuse; Food waste
Abstract
The invention relates to the technical field of garbage treatment, in particular to a kitchen garbage treatment process, which comprises the steps of crushing kitchen garbage, adding high-carbon auxiliary materials and a compound microbial agent for fermentation treatment, carrying out oil-water separation on percolate generated after solid-liquid separation, recovering an oil phase, and adding an activated sludge/zeolite mixture into a water phase for treatment.
Description
Technical Field
The invention relates to the technical field of garbage treatment, in particular to a kitchen garbage treatment process.
Background
The kitchen waste refers to food residues, waste liquid, waste oil and other wastes generated in the processes of food processing, food service, unit meal supply and other activities of hotels, restaurants, institutions, troops, universities and public institutions, and in a broad sense, the kitchen waste in daily life of people is also classified as kitchen waste.
Kitchen garbage's expression is greasy, wet drenches, foul smell, influences comfort and the health of people's vision and smell etc. still has the duality of showing wastes material and resource, and kitchen garbage is rich in organic matters such as starch, fat, protein, cellulose, nitrogen, phosphorus, potassium, calcium and various microelement, and poisonous harmful substance content is few, and the influence is abundant, is the abundant resource of preparation animal feed and fertilizer, and it is fast to rot the rotten speed of rotting, easily carries and breeds the bacterium: foot and mouth disease, salmonella, toxoplasma, swine fever germs, etc., and has fast rotting and deteriorating speed and great treatment difficulty.
At present, the treatment method of the kitchen waste comprises landfill treatment, incineration treatment, high-temperature aerobic composting treatment, feed treatment and biochemical treatment, but the general treatment effect is not ideal.
Disclosure of Invention
The invention aims to: aiming at the technical problem, the invention provides a kitchen waste treatment process.
The adopted technical scheme is as follows:
a kitchen waste treatment process comprises the following steps: crushing the kitchen waste, adding a high-carbon auxiliary material and a compound microbial agent for fermentation treatment, performing oil-water separation on percolate generated after solid-liquid separation, recovering an oil phase, and adding an activated sludge/zeolite mixture into a water phase for treatment;
the compound microbial agent comprises bacillus subtilis, klebsiella nigrescens, pseudomonas putida, high-temperature actinomycetes, bacillus laterosporus and aspergillus niger, and the number of effective viable bacteria in the compound microbial agent is more than or equal to 100 hundred million CFU/g.
Further, the compound microbial agent also comprises a carrier, and the preparation method of the carrier comprises the following steps:
s1: drying and crushing peanut shells, placing the crushed peanut shells into a polytetrafluoroethylene lining, adding water, placing the polytetrafluoroethylene lining into a stainless steel autoclave, sealing and heating to 160-180 ℃, reacting for 10-15h, naturally cooling to room temperature, filtering, sequentially soaking the obtained solid in water and ethanol to remove soluble impurities to obtain carbonaceous gel, and carrying out vacuum freeze drying for 10-15h for later use;
s2: adding hydroxyethyl cellulose into sodium hydroxide solution, heating to 40-50 deg.C, stirring for 1-1.5h, adding acrylic acid and carbonaceous gel, stirring for 0.5-1h, adding initiator and cross-linking agent, reacting for 5-10h, filtering, washing the obtained solid, oven drying, pulverizing, and sieving with 200 mesh sieve.
Further, the neutralization degree of the acrylic acid is 75 to 85%.
Further, the initiator is a combination of potassium persulfate and sodium bisulfite.
Further, the mass ratio of the potassium persulfate to the sodium bisulfite is 5-10: 1.
further, the cross-linking agent is N, N-methylene bisacrylamide.
Further, the high-carbon auxiliary material is crop straws, rice bran or sawdust.
Further, a direct current with the intensity of 10-20mA is applied during the fermentation treatment.
Further, the preparation method of the activated sludge/zeolite mixture is as follows:
aeration is carried out for 24-48h, then acclimatization culture is started, and aeration is carried out for 18-20 h.d during the acclimatization culture -1 Standing for 2-3 h.d -1 0.5-1 h.d of inlet and outlet water -1 Maintaining DO at least equal to 6 mg.L -1 The temperature is more than or equal to 25 ℃, the pH is 7.5-8.5, the MLSS is 2000-2200 mg.L -1 And after 15-20 days, the domestication is finished, and the domestication is performed with zeolite according to the mass ratio of 1: 1 and mixing.
Further, the water inlet and outlet is artificially distributed, and comprises the following components in percentage by weight:
2-4% of ammonium sulfate, 0.5-1% of disodium hydrogen phosphate, 4-6% of sodium bicarbonate, 0.01-0.05% of cerium nitrate, 0.01-0.02% of cobalt chloride, 0.01-0.02% of manganese chloride and the balance of water.
The invention has the beneficial effects that:
the invention adopts the composite microbial agent consisting of bacillus subtilis, klebsiella nigricans, pseudomonas putida, high-temperature actinomycetes, bacillus laterosporus and aspergillus niger to degrade the kitchen waste, can rapidly and efficiently decompose organic matters in the kitchen waste, can effectively realize the harmlessness and volume reduction of the kitchen waste, adjusts the flora structure, improves the microbial degradation activity and improves the efficiency of degrading organic components by reasonably adjusting the content of various microorganisms, can protect the microbial activity due to the existence of a carrier, is beneficial to the fixation and proliferation of the microorganisms and the improvement of the degradation efficiency of the kitchen waste, and can stimulate the metabolic activity of the microorganisms by applying an external current during the fermentation treatment, the method has the advantages that the secretion of lipase, cellulase and protease is promoted, the degradation efficiency is improved, the COD (chemical oxygen demand) and ammonia nitrogen content in the water phase of the fermentation product can be further reduced by the activated sludge/zeolite mixture, the kitchen waste treatment process provided by the invention can effectively realize the harmlessness and volume reduction of the kitchen waste, and the method has important significance for the treatment of the kitchen waste in cities.
Drawings
FIG. 1 is an SEM photograph of the support prepared in example 1 of the present invention.
Detailed Description
The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
Example 1:
a kitchen waste treatment process comprises the following steps:
s1: crushing the solid in the kitchen waste by using a crusher, adding rice bran and a compound microbial agent, wherein the adding amount of the rice bran and the compound microbial agent is respectively 20% and 3% of the mass of the kitchen waste, uniformly stirring for fermentation treatment for 48 hours, and applying direct current with the intensity of 15mA during the fermentation treatment;
the compound microbial agent comprises 20 parts of bacillus subtilis, 5 parts of klebsiella nigrescens, 3 parts of pseudomonas putida, 1 part of high-temperature actinomycetes, 5 parts of bacillus laterosporus and 2 parts of aspergillus niger, wherein the number of effective viable bacteria is more than or equal to 100 hundred million CFU/g.
The preparation method of the carrier comprises the following steps:
drying and crushing 100g of peanut shell, placing the crushed peanut shell into a polytetrafluoroethylene lining, adding 800mL of water, placing the polytetrafluoroethylene lining into a stainless steel autoclave, sealing and heating to 170 ℃, reacting for 14h, naturally cooling to room temperature, filtering, sequentially soaking the obtained solid in water and ethanol to remove soluble impurities to obtain carbonaceous gel, carrying out vacuum freeze drying for 10h, adding 46.7g of hydroxyethyl cellulose into 500mL0.015mol/L of sodium hydroxide solution, heating to 50 ℃, stirring for 1.5h, adding 250mL of acrylic acid with a neutralization degree of 80% and the carbonaceous gel, continuously stirring for 1h, adding potassium persulfate and sodium bisulfite according to a mass ratio of 8: 1 and 1g of N, N-methylene bisacrylamide, reacting for 10 hours, filtering, washing the obtained solid, drying, crushing and sieving with a 200-mesh sieve.
S2: performing oil-water separation on percolate generated by solid-liquid separation of the fermented product, recovering oil phase, adding activated sludge/zeolite mixture into the rest water phase for treatment, wherein the addition amount of the activated sludge/zeolite mixture is 4% of the mass of the water phase, aerating with a microporous aeration device during treatment, and controlling DO of the water body to be 2.4 mg.L -1 And sampling and testing after 72 h.
The preparation method of the activated sludge/zeolite mixture comprises the following steps:
taking activated sludge from a secondary sedimentation tank of a sewage treatment plant of a terrace pond in Changsha city, carrying out closed aeration for 36h, then starting acclimatization culture, and aerating for 20h d during the acclimatization culture -1 Standing for 2.5 h.d -1 Inlet and outlet water 1h d -1 The water inlet and outlet is artificially distributed and comprises the following components in percentage by weight: 3% of ammonium sulfate, 1% of disodium hydrogen phosphate, 5% of sodium bicarbonate, 0.05% of cerium nitrate, 0.01% of cobalt chloride, 0.01% of manganese chloride and the balance of water, wherein DO is maintained to be more than or equal to 6 mg.L -1 At a temperature of not less than 25 ℃, pH of 8.5 and MLSS of 2200 mg.L -1 And after 20d, domestication is completed, and the domestication is performed with zeolite according to the mass ratio of 1: 1 and mixing.
Example 2:
a kitchen waste treatment process comprises the following steps:
s1: crushing the solid in the kitchen waste by using a crusher, adding rice bran and a compound microbial agent, wherein the adding amount of the rice bran and the compound microbial agent is respectively 20% and 3% of the mass of the kitchen waste, uniformly stirring for fermentation treatment for 48 hours, and applying direct current with the intensity of 20mA during the fermentation treatment;
the compound microbial agent comprises 20 parts of bacillus subtilis, 5 parts of klebsiella nigrescens, 3 parts of pseudomonas putida, 1 part of high-temperature actinomycetes, 5 parts of bacillus laterosporus and 2 parts of aspergillus niger, wherein the number of effective viable bacteria is more than or equal to 100 hundred million CFU/g.
The preparation method of the carrier comprises the following steps:
drying and crushing 100g of peanut shells, placing the crushed peanut shells into a polytetrafluoroethylene lining, adding 800mL of water, placing the polytetrafluoroethylene lining into a stainless steel autoclave, sealing and heating to 180 ℃, reacting for 15 hours, naturally cooling to room temperature, filtering, sequentially soaking the obtained solid in water and ethanol to remove soluble impurities to obtain carbonaceous gel, freeze-drying for 15 hours in vacuum for later use, adding 46.7g of hydroxyethyl cellulose into 500mL of 0.015mol/L sodium hydroxide solution, heating to 50 ℃, stirring for 1.5 hours, adding 250mL of acrylic acid and gel with the neutralization degree of 85% of carbon, continuously stirring for 1 hour, adding potassium persulfate and sodium bisulfite according to the mass ratio of 10: 1 and 1g of N, N-methylene bisacrylamide, reacting for 10 hours, filtering, washing the obtained solid, drying, crushing and sieving with a 200-mesh sieve.
S2: performing oil-water separation on percolate generated by solid-liquid separation of the fermented product, recovering oil phase, adding activated sludge/zeolite mixture into the rest water phase for treatment, wherein the addition amount of the activated sludge/zeolite mixture is 5% of the mass of the water phase, aerating with a microporous aeration device during treatment, and controlling DO of the water body to be 2.4 mg.L -1 And sampling and testing after 72 h.
The preparation method of the activated sludge/zeolite mixture comprises the following steps:
taking activated sludge from secondary sedimentation tank of sewage treatment plant in Changsha pond, tightly aerating for 48h, and then starting acclimatizing culture, wherein aeration is carried out for 20 h.d during acclimatizing culture -1 Standing for 3h d -1 0.5-1 h.d of inlet and outlet water -1 The water inlet and outlet is artificially distributed and comprises the following components in percentage by weight: 4% of ammonium sulfate, 1% of disodium hydrogen phosphate, 6% of sodium bicarbonate, 0.05% of cerium nitrate, 0.02% of cobalt chloride, 0.02% of manganese chloride and the balance of water, wherein DO is maintained to be more than or equal to 6 mg.L -1 At a temperature of not less than 25 ℃, pH of 8.5 and MLSS of 2200 mg.L -1 And after 20d, domestication is completed, and the domestication is performed with zeolite according to the mass ratio of 1: 1 and mixing.
Example 3:
a kitchen waste treatment process comprises the following steps:
s1: crushing the solid in the kitchen waste by using a crusher, adding rice bran and a compound microbial agent, wherein the adding amount of the rice bran and the compound microbial agent is respectively 20% and 3% of the mass of the kitchen waste, uniformly stirring for fermentation treatment for 48 hours, and applying direct current with the intensity of 10mA during the fermentation treatment;
the compound microbial agent comprises 20 parts of bacillus subtilis, 5 parts of klebsiella nigrescens, 3 parts of pseudomonas putida, 1 part of high-temperature actinomycetes, 5 parts of bacillus laterosporus and 2 parts of aspergillus niger, wherein the number of effective viable bacteria is more than or equal to 100 hundred million CFU/g.
The preparation method of the carrier comprises the following steps:
drying and crushing 100g of peanut shells, placing the crushed peanut shells into a polytetrafluoroethylene lining, adding 800mL of water, placing the polytetrafluoroethylene lining into a stainless steel autoclave, sealing and heating to 160 ℃, reacting for 10 hours, naturally cooling to room temperature, filtering, sequentially soaking the obtained solid in water and ethanol to remove soluble impurities to obtain carbonaceous gel, freeze-drying in vacuum for 10 hours, adding 46.7g of hydroxyethyl cellulose into 500mL0.015mol/L of sodium hydroxide solution, heating to 40 ℃, stirring for 1 hour, adding 250mL of acrylic acid with 75% of carbon and gel, continuously stirring for 0.5 hour, adding potassium persulfate and sodium bisulfite according to the mass ratio of 5: 1 and 1g of N, N-methylene bisacrylamide, reacting for 5 hours, filtering, washing the obtained solid, drying, crushing and sieving with a 200-mesh sieve.
S2: performing oil-water separation on percolate generated by solid-liquid separation of the fermented product, recovering oil phase, adding activated sludge/zeolite mixture into the rest water phase for treatment, wherein the addition amount of the activated sludge/zeolite mixture is 3% of the mass of the water phase, performing aeration by using a microporous aeration device during treatment, and controlling DO of the water body to be 2.1 mg.L -1 And sampling and testing after 72 h.
The preparation method of the activated sludge/zeolite mixture comprises the following steps:
taking activated sludge from a secondary sedimentation tank of a sewage treatment plant of a terrace pond of Changsha city, carrying out closed aeration for 24 hours, then starting acclimatization culture, wherein aeration is carried out for 18 hours d during the acclimatization culture -1 Standing for 2h d -1 0.5-1 h.d of inlet and outlet water -1 The water inlet and outlet is artificially distributed and comprises the following components in percentage by weight: 2 percent of ammonium sulfate, 0.5 percent of disodium hydrogen phosphate, 4 percent of sodium bicarbonate, 0.01 percent of cerium nitrate, 0.01 percent of cobalt chloride, 0.01 percent of manganese chloride and the balance of water, and the DO is kept to be more than or equal to 6 mg.L -1 At a temperature of not less than 25 ℃, pH of 7.5 and MLSS of 2000 mg.L -1 And after 15d, domestication is completed, and the domesticated zeolite is mixed with zeolite according to the mass ratio of 1: 1 and mixing.
Example 4:
a kitchen waste treatment process comprises the following steps:
s1: crushing the solid in the kitchen waste by using a crusher, adding rice bran and a compound microbial agent, wherein the adding amount of the rice bran and the compound microbial agent is respectively 20% and 3% of the mass of the kitchen waste, uniformly stirring for fermentation treatment for 48 hours, and applying direct current with the intensity of 10mA during the fermentation treatment;
the compound microbial agent comprises 20 parts of bacillus subtilis, 5 parts of klebsiella nigrescens, 3 parts of pseudomonas putida, 1 part of high-temperature actinomycetes, 5 parts of bacillus laterosporus and 2 parts of aspergillus niger, wherein the number of effective viable bacteria is more than or equal to 100 hundred million CFU/g.
The preparation method of the carrier comprises the following steps:
drying and crushing 100g of peanut shells, placing the crushed peanut shells into a polytetrafluoroethylene lining, adding 800mL of water, placing the polytetrafluoroethylene lining into a stainless steel autoclave, sealing and heating to 180 ℃, reacting for 10 hours, naturally cooling to room temperature, filtering, sequentially soaking the obtained solid in water and ethanol to remove soluble impurities to obtain carbonaceous gel, freeze-drying in vacuum for 15 hours for later use, adding 46.7g of hydroxyethyl cellulose into 500mL0.015mol/L of sodium hydroxide solution, heating to 40 ℃, stirring for 1.5 hours, adding 250mL of acrylic acid with 75% of neutralization degree and the carbonaceous gel, continuously stirring for 1 hour, adding potassium persulfate and sodium bisulfite according to the mass ratio of 5: 1 and 1g of N, N-methylene bisacrylamide, reacting for 10 hours, filtering, washing the obtained solid, drying, crushing and sieving with a 200-mesh sieve.
S2: performing solid-liquid separation on the fermentation product to obtain percolate, performing oil-water separation, recovering oil phase, adding activated sludge/zeolite mixture into the rest water phase to treat, wherein the addition amount of the activated sludge/zeolite mixture is 3% of the water phase, aerating with microporous aerator while controlling DO of water to be 2.4 mg.L -1 And sampling and testing after 72 h.
The preparation method of the activated sludge/zeolite mixture comprises the following steps:
taking activated sludge from a secondary sedimentation tank of a sewage treatment plant of a terrace pond of Changsha city, carrying out closed aeration for 24 hours, then starting acclimatization culture, and aerating for 20 hours d during the acclimatization culture -1 Standing for 2h d -1 0.5-1 h.d of inlet and outlet water -1 The water inlet and outlet is artificially distributed and comprises the following components in percentage by weight: 4% of ammonium sulfate, 0.5% of disodium hydrogen phosphate, 6% of sodium bicarbonate, 0.01% of cerium nitrate, 0.02% of cobalt chloride, 0.01% of manganese chloride and the balance of water, wherein DO is maintained to be more than or equal to 6 mg.L -1 The temperature is more than or equal to 25 ℃, the pH is 8.5, and the MLSS is 2000 mg.L -1 And after 20d, domestication is completed, and the domestication is performed with zeolite according to the mass ratio of 1: 1 and mixing.
Example 5:
a kitchen waste treatment process comprises the following steps:
s1: crushing the solid in the kitchen waste by using a crusher, adding rice bran and a compound microbial agent, wherein the adding amount of the rice bran and the compound microbial agent is respectively 20% and 3% of the mass of the kitchen waste, uniformly stirring for fermentation treatment for 48 hours, and applying direct current with the intensity of 20mA during the fermentation treatment;
the compound microbial agent comprises 20 parts of bacillus subtilis, 5 parts of klebsiella nigrescens, 3 parts of pseudomonas putida, 1 part of high-temperature actinomycetes, 5 parts of bacillus laterosporus and 2 parts of aspergillus niger, wherein the number of effective viable bacteria is more than or equal to 100 hundred million CFU/g.
The preparation method of the carrier comprises the following steps:
drying and crushing 100g of peanut shell, placing the crushed peanut shell into a polytetrafluoroethylene lining, adding 800mL of water, placing the polytetrafluoroethylene lining into a stainless steel autoclave, sealing and heating to 160 ℃, reacting for 15 hours, naturally cooling to room temperature, filtering, sequentially soaking the obtained solid in water and ethanol to remove soluble impurities to obtain carbonaceous gel, freeze-drying in vacuum for 10 hours for later use, adding 46.7g of hydroxyethyl cellulose into 500mL0.015mol/L sodium hydroxide solution, heating to 50 ℃, stirring for 1 hour, adding 250mL of acrylic acid with the neutralization degree of 85% and gel, continuously stirring for 0.5 hour, adding potassium persulfate and sodium bisulfite according to the mass ratio of 10: 1 and 1g of N, N-methylene bisacrylamide, reacting for 5 hours, filtering, washing the obtained solid, drying, crushing and sieving with a 200-mesh sieve.
S2: performing oil-water separation on percolate generated by solid-liquid separation of the fermented product, recovering oil phase, adding activated sludge/zeolite mixture into the rest water phase for treatment, wherein the addition amount of the activated sludge/zeolite mixture is 5% of the mass of the water phase, aerating with a microporous aeration device during treatment, and controlling DO of the water body to be 2.1 mg.L -1 And sampling and testing after 72 h.
The preparation method of the activated sludge/zeolite mixture comprises the following steps:
taking activated sludge from a secondary sedimentation tank of a sewage treatment plant of a terrace pond of Changsha city, performing closed aeration for 48 hours, and then performing acclimatization culture, wherein aeration is performed for 18 hours d during the acclimatization culture -1 Standing for 3h d -1 0.5-1 h.d. of inlet and outlet water -1 The water inlet and outlet is artificially distributed and comprises the following components in percentage by weight: 2 percent of ammonium sulfate, 1 percent of disodium hydrogen phosphate, 4 percent of sodium bicarbonate, 0.05 percent of cerium nitrate, 0.01 percent of cobalt chloride, 0.02 percent of manganese chloride and the balance of water, and the DO is kept to be more than or equal to 6 mg.L -1 At a temperature of not less than 25 ℃ and a pH of not less than7.5 MLSS of 2200 mg.L -1 And after 15d, domestication is completed, and the domesticated zeolite is mixed with zeolite according to the mass ratio of 1: 1 and mixing.
Comparative example 1:
the procedure was as in example 1 except that no direct current was applied during the fermentation treatment.
Comparative example 2:
substantially the same as in example 1 except that the complex microbial agent does not include a carrier.
Comparative example 3:
substantially the same as in example 1, except that the complex microbial agent does not include Klebsiella melanosticta.
Comparative example 4:
substantially the same as in example 1 except that the complex microbial agent does not include Pseudomonas putida.
And (3) performance testing:
weight reduction ratio (η):
the weight reduction rate of the kitchen waste after the fermentation treatment of S1 in examples 1 to 5 of the present invention and comparative examples 1 to 4 was measured, respectively, and the results are shown in table 1 below:
η＝[(m 1 -m 2 )/m 1 ]*100％
m 1 is the dry weight of the kitchen waste before treatment
m 2 Is the dry weight of the treated kitchen waste
Table 1:
secondly, in examples 1 to 5 and comparative examples 1 to 4 of the present invention, the liquid phase is taken before the kitchen waste is treated, the COD and the ammonia nitrogen concentration are measured by the liquid phase after the oil-water separation, the COD and the ammonia nitrogen concentration are measured by the liquid phase after the treatment, and the degradation rate of the COD and the ammonia nitrogen concentration is calculated, and the results are shown in the following table 2:
TABLE 2
As can be seen from table 1 and table 2, the kitchen waste treatment process provided by the invention can effectively realize the harmlessness and volume reduction of kitchen waste, and has an important significance for the treatment of urban Chinese food waste.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A kitchen waste treatment process is characterized in that kitchen waste is crushed and then added with high-carbon auxiliary materials and compound microbial agents for fermentation treatment, leachate generated after solid-liquid separation is subjected to oil-water separation, an oil phase is recovered, and an activated sludge/zeolite mixture is added into a water phase for treatment;
the compound microbial agent comprises bacillus subtilis, klebsiella nigrescens, pseudomonas putida, high-temperature actinomycetes, bacillus laterosporus and aspergillus niger, and the number of effective viable bacteria in the compound microbial agent is more than or equal to 100 hundred million CFU/g.
2. The kitchen waste treatment process according to claim 1, wherein the compound microbial agent further comprises a carrier, and the preparation method of the carrier comprises the following steps:
s1: drying and crushing peanut shells, placing the crushed peanut shells into a polytetrafluoroethylene lining, adding water, placing the polytetrafluoroethylene lining into a stainless steel autoclave, sealing and heating to 160-180 ℃, reacting for 10-15h, naturally cooling to room temperature, filtering, sequentially soaking the obtained solid in water and ethanol to remove soluble impurities to obtain carbonaceous gel, and carrying out vacuum freeze drying for 10-15h for later use;
s2: adding hydroxyethyl cellulose into sodium hydroxide solution, heating to 40-50 deg.C, stirring for 1-1.5h, adding acrylic acid and carbonaceous gel, stirring for 0.5-1h, adding initiator and cross-linking agent, reacting for 5-10h, filtering, washing the obtained solid, oven drying, pulverizing, and sieving with 200 mesh sieve.
3. The kitchen waste treatment process according to claim 2, characterized in that the neutralization degree of acrylic acid is 75-85%.
4. The kitchen waste treatment process according to claim 2, characterized in that the initiator is a combination of potassium persulfate and sodium bisulfite.
5. The kitchen waste treatment process according to claim 4, wherein the mass ratio of potassium persulfate to sodium bisulfite is 5-10: 1.
6. the kitchen waste treatment process according to claim 2, characterized in that the cross-linking agent is N, N-methylenebisacrylamide.
7. The kitchen waste treatment process according to claim 1, wherein the high-carbon auxiliary material is crop straw, rice bran or sawdust.
8. The kitchen waste treatment process according to claim 1, characterized in that a direct current with an intensity of 10-20mA is applied during the fermentation treatment.
9. The kitchen waste treatment process according to claim 1, characterized in that the preparation method of the activated sludge/zeolite mixture is as follows:
taking activated sludge, aeration for 24-48h, then performing acclimatization culture, wherein aeration is performed for 18-20 h.d during acclimatization culture -1 Standing for 2-3 h.d -1 0.5-1 h.d of inlet and outlet water -1 Keeping DO ≥6mg·L -1 The temperature is more than or equal to 25 ℃, the pH is 7.5-8.5, the MLSS is 2000-2200 mg.L -1 And after 15-20 days, the domestication is finished, and the domestication is performed with zeolite according to the mass ratio of 1: 1 and mixing.
10. The kitchen waste treatment process according to claim 9, wherein the water inlet and outlet is artificially distributed and comprises the following components in percentage by weight:
2-4% of ammonium sulfate, 0.5-1% of disodium hydrogen phosphate, 4-6% of sodium bicarbonate, 0.01-0.05% of cerium nitrate, 0.01-0.02% of cobalt chloride, 0.01-0.02% of manganese chloride and the balance of water.
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10174582A (en) * | 1996-12-17 | 1998-06-30 | Isami Fukunaga | Active microbial mixture and its use |
| US20100279354A1 (en) * | 2009-04-29 | 2010-11-04 | Evolugate, Llc | Adapting microorganisms for agricultural products |
| JP2011036843A (en) * | 2009-08-11 | 2011-02-24 | Shoji Sawada | Culture of bacteria carrier, stuck body thereof, and method for producing the same |
| CN103396171A (en) * | 2013-07-18 | 2013-11-20 | 上海交通大学 | Environmentally friendly biochar-based fertilizer and application method thereof |
| CN103910475A (en) * | 2013-12-30 | 2014-07-09 | 新疆环境工程技术有限责任公司 | Method for domestication of salt-resistant activated sludge |
| CN103952454A (en) * | 2014-05-04 | 2014-07-30 | 青岛科柏利高性能聚合物有限公司 | Process for preparing degradable plastics by using kitchen wastes |
| CN108326006A (en) * | 2018-01-31 | 2018-07-27 | 成都蕴哲科技有限公司 | A kind of Food waste treatment method |
| CN109438126A (en) * | 2018-12-13 | 2019-03-08 | 上海市园林科学规划研究院 | A kind of preparation method of no coating organic wet garbage charcoal base manure |
| CN111471617A (en) * | 2020-04-08 | 2020-07-31 | 陕西省微生物研究所 | Cellulose degradation composite flora and screening thereof and application of saprophytic fungi residue for decomposing |
| CN111574263A (en) * | 2020-05-08 | 2020-08-25 | 清华大学 | Micro-pressure high-temperature organic solid waste treatment system and method with quick microbial start |
| CN112812333A (en) * | 2021-02-18 | 2021-05-18 | 杭州楠大环保科技有限公司 | Preparation method and application of perishable garbage fermentation bacterium carrier |
| CN113172069A (en) * | 2021-04-06 | 2021-07-27 | 杭州楠大环保科技有限公司 | Kitchen waste treatment method |
| CN113789282A (en) * | 2021-09-30 | 2021-12-14 | 北京饕餮环保科技有限公司 | High-temperature aerobic composite microbial agent for kitchen waste treatment and preparation method thereof |
-
2022
- 2022-06-17 CN CN202210690724.8A patent/CN115055483B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10174582A (en) * | 1996-12-17 | 1998-06-30 | Isami Fukunaga | Active microbial mixture and its use |
| US20100279354A1 (en) * | 2009-04-29 | 2010-11-04 | Evolugate, Llc | Adapting microorganisms for agricultural products |
| JP2011036843A (en) * | 2009-08-11 | 2011-02-24 | Shoji Sawada | Culture of bacteria carrier, stuck body thereof, and method for producing the same |
| CN103396171A (en) * | 2013-07-18 | 2013-11-20 | 上海交通大学 | Environmentally friendly biochar-based fertilizer and application method thereof |
| CN103910475A (en) * | 2013-12-30 | 2014-07-09 | 新疆环境工程技术有限责任公司 | Method for domestication of salt-resistant activated sludge |
| CN103952454A (en) * | 2014-05-04 | 2014-07-30 | 青岛科柏利高性能聚合物有限公司 | Process for preparing degradable plastics by using kitchen wastes |
| CN108326006A (en) * | 2018-01-31 | 2018-07-27 | 成都蕴哲科技有限公司 | A kind of Food waste treatment method |
| CN109438126A (en) * | 2018-12-13 | 2019-03-08 | 上海市园林科学规划研究院 | A kind of preparation method of no coating organic wet garbage charcoal base manure |
| CN111471617A (en) * | 2020-04-08 | 2020-07-31 | 陕西省微生物研究所 | Cellulose degradation composite flora and screening thereof and application of saprophytic fungi residue for decomposing |
| CN111574263A (en) * | 2020-05-08 | 2020-08-25 | 清华大学 | Micro-pressure high-temperature organic solid waste treatment system and method with quick microbial start |
| CN112812333A (en) * | 2021-02-18 | 2021-05-18 | 杭州楠大环保科技有限公司 | Preparation method and application of perishable garbage fermentation bacterium carrier |
| CN113172069A (en) * | 2021-04-06 | 2021-07-27 | 杭州楠大环保科技有限公司 | Kitchen waste treatment method |
| CN113789282A (en) * | 2021-09-30 | 2021-12-14 | 北京饕餮环保科技有限公司 | High-temperature aerobic composite microbial agent for kitchen waste treatment and preparation method thereof |
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