CN112499914A - Method for preparing derivative of aquaculture sewage by recycling - Google Patents
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Abstract
The invention relates to the technical field of sewage treatment, in particular to a method for recycling and preparing a derivative of aquaculture sewage, which comprises the steps of solid-liquid separation, detoxification treatment, toxicity degradation, nutrient removal, denitrification treatment, purification treatment and flocculation treatment.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a recycling preparation method of a breeding sewage derivative.
Background
Livestock and poultry breeding industry is a leading industry of agriculture in China, and livestock and poultry breeding pollution becomes one of the main causes of non-point source pollution in rural areas in China. With the rapid development of livestock and poultry industry production, particularly the development of large-scale breeding, the contradiction between the livestock and poultry industry development and environmental pollution is increasingly prominent due to the generation of a large amount of livestock and poultry excrement and various wastes. Due to the excretion of livestock, particularly the use of a large amount of feed at present, the excrement of the livestock contains a large amount of pollutants, and finally the biochemical index in the sewage is seriously over-high. At present, according to the relevant national policies and requirements, most of breeding wastewater farms are provided with biogas digesters, a purification treatment process for the effluent of the biogas digesters is provided, and the problem of treatment of livestock and poultry breeding wastewater is an inexorable task.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a method for recycling and preparing a derivative of aquaculture sewage.
In order to achieve the purpose, the invention adopts the following technical scheme:
a preparation method for recycling the derivative of the aquaculture sewage is designed, and comprises the following steps:
s1, performing solid-liquid separation, namely flushing the breeding house by using clear water, flushing animal wastes and food residues into a first sewage collecting tank, then conveying the first sewage collecting tank into a solid-liquid separator for primary solid-liquid separation, conveying solid matters after the primary solid-liquid separation into a methane tank to generate methane for power generation, and conveying liquid after the separation into an oxidation pond;
s2, performing disinfection treatment, namely conveying the liquid in the oxidation pond after the primary separation to a first biochemical pond, and adding composite bacteria consisting of bacillus subtilis and pseudomonas aeruginosa in the first biochemical pond, wherein the weight ratio of the bacillus subtilis to the pseudomonas aeruginosa is 1: 1, the input amount of the composite bacteria consisting of the bacillus subtilis and the pseudomonas aeruginosa is 2-10g/m3Meanwhile, oxygen is supplied by a microporous aeration head arranged at the bottom of the first biological pond, dissolved oxygen in the sewage is increased to 0.5-2.0mg/L, the disinfection time is 3-6 days, and the added compound bacteria in the disinfection process excite microorganisms in the water body in the first biological pond to proliferate, so that part of organic substances in the water body are converted into liquid fertilizer functional enzyme capable of promoting plant growth;
s3, degrading toxicity, conveying the sewage subjected to disinfection treatment to a second biochemical pool, and adding composite bacteria consisting of pseudomonas, arthrobacter, actinomycetes and fungi into the second biochemical pool, wherein the weight ratio of the pseudomonas to the arthrobacter to the actinomycetes to the fungi is 1: 1: 1: 1; the input amount is 3-9g/m3At the same time, the oxygen is supplied by a microporous aeration head arranged at the bottom of the second biochemical tank to dissolve the sewageIncreasing oxygen to 0.5-2.0mg/L for 1-3 days, wherein the added compound bacteria convert part of organic substances in the water into functional enzyme with soil improvement function in the degradation process;
s4, removing nutrient substances, conveying the detoxified sewage to a third biochemical pool, adding composite bacteria consisting of bacillus, alkalibacter, pseudomonas and flavobacterium in the third biochemical pool, wherein the weight ratio of the bacillus, the alkalibacter, the pseudomonas and the flavobacterium is 1: 1: 1: 1, the input amount is 4-9g/m3Meanwhile, oxygen is supplied by a microporous aeration head arranged at the bottom of the third biochemical tank, the dissolved oxygen in the sewage is increased to 0.5-2.0mg/L for 1-3 days, and the added composite bacteria convert part of organic substances in the water body into water quality purifying agent functional enzyme with the water quality purifying function;
s5, performing denitrification treatment, namely conveying the sewage treated in the third biochemical pool to a fourth biochemical pool, adding composite bacteria consisting of bacillus, brevibacterium and pseudomonas into the fourth biochemical pool, wherein the weight ratio of the bacillus, the brevibacterium and the pseudomonas is 1: 1: 1, the input amount is 4-8g/m3Meanwhile, a stirring device arranged above the fourth biochemical pool is used for stirring to accelerate the reaction efficiency, the reaction time is 4-8 hours, and the added composite bacteria convert part of organic substances in the water body into deodorant enzyme with a deodorization function;
s6, purifying, namely conveying the sewage treated in the fourth biochemical tank to a fifth biochemical tank, and observing and detecting whether the sewage in the fifth biochemical tank reaches a discharge standard;
s7, performing flocculation treatment, namely conveying the sewage treated in the fifth biochemical tank to a sixth biochemical tank, and adding composite bacteria consisting of bacillus, aerogenic bacillus, alcaligenes and flavobacterium into the sixth biochemical tank, wherein the weight ratio of the bacillus, the aerogenic bacillus, the alcaligenes and the flavobacterium is 1: 1: 1: 1; the input amount is 5-10g/m3Standing for 2-5 days;
preferably, the purified water after flocculation treatment in the sixth biochemical pool can be introduced into a breeding house for recycling or directly discharged, and soil conditioners, water purifiers, liquid fertilizers and deodorant functional enzymes contained in the purified water can improve the surrounding ecological environment.
Preferably, the water outlet end of the methane tank is provided with a second sewage collecting tank, the water outlet end of the second sewage collecting tank is provided with a screw stacking machine, the screw stacking machine is used for carrying out secondary solid-liquid separation on sewage in the second sewage collecting tank, and the separated solid is conveyed into the methane tank.
The preparation method for recycling the derivative of the aquaculture sewage has the beneficial effects that: the strain capable of exciting the native microorganisms is adopted to breed by exciting the microorganisms of the original water body, organic substances in sewage are converted into functional enzymes, and meanwhile, certain metabolic substances are generated, wherein the functional enzymes comprise a soil conditioner, a water purifying agent, a liquid fertilizer and a deodorant until all organic substances in the sewage are decomposed, and the effluent after sewage treatment reaches a sewage discharge standard value and can directly enter a city sewage pipe network or be used for cleaning a breeding house, so that the treatment process is odorless and tasteless, the environment is not polluted, and the method has the advantage of environmental protection.
Drawings
FIG. 1 is a schematic structural diagram of a recycling preparation method of a derivative of aquaculture wastewater according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example one
Referring to fig. 1, a method for recycling and preparing a derivative of aquaculture sewage comprises the following steps:
s1, performing solid-liquid separation, namely flushing the breeding house by using clean water, flushing animal excrement and food residues into a first sewage collecting tank, then conveying the first sewage collecting tank into a solid-liquid separator for primary solid-liquid separation, conveying solid substances subjected to primary solid-liquid separation into a methane tank to generate methane for power generation, conveying the separated liquid into an oxidation pond, introducing the purified water subjected to flocculation treatment in a sixth biochemical tank into the breeding house for recycling or directly discharging, wherein the contained soil conditioner, water quality purifying agent, liquid fertilizer and deodorant function enzyme can improve the surrounding ecological environment, installing a second sewage collecting tank at the water outlet end of the methane tank, installing a screw stacking machine at the water outlet end of the second sewage collecting tank, performing secondary solid-liquid separation on the sewage in the second sewage collecting tank by using the screw stacking machine, and conveying the separated solid into the methane tank;
s2, performing disinfection treatment, namely conveying the liquid in the oxidation pond after the primary separation to a first biochemical pond, and adding composite bacteria consisting of bacillus subtilis and pseudomonas aeruginosa in the first biochemical pond, wherein the weight ratio of the bacillus subtilis to the pseudomonas aeruginosa is 1: 1, the input amount of the composite bacteria consisting of the bacillus subtilis and the pseudomonas aeruginosa is 4g/m3Meanwhile, oxygen is supplied by a microporous aeration head arranged at the bottom of the first biological tank, so that the dissolved oxygen in the sewage is increased to 0.5mg/L, and the disinfection time is 3 days. The compound bacteria added in the disinfection process excite the microorganisms in the water body in the first biological pond to proliferate, and convert part of organic substances in the water body into liquid fertilizer functional enzyme capable of promoting plant growth;
s3, degrading toxicity, conveying the sewage subjected to disinfection treatment to a second biochemical pool, and adding composite bacteria consisting of pseudomonas, arthrobacter, actinomycetes and fungi into the second biochemical pool, wherein the weight ratio of the pseudomonas to the arthrobacter to the actinomycetes to the fungi is 1: 1: 1: 1; the input amount is 4g/m3Meanwhile, oxygen is supplied by a microporous aeration head arranged at the bottom of the second biochemical tank, the dissolved oxygen in the sewage is increased to 0.5mg/L for 1 day, and part of organic substances in the water body are converted into functional enzyme with the soil improvement function by the added compound bacteria in the degradation process;
s4, removing nutrient substances, conveying the detoxified sewage to a third biochemical pool, adding composite bacteria consisting of bacillus, alkalibacter, pseudomonas and flavobacterium in the third biochemical pool, wherein the weight ratio of the bacillus, the alkalibacter, the pseudomonas and the flavobacterium is 1: 1: 1: 1, the input amount is 4g/m3At the same time, oxygen is supplied by a microporous aeration head arranged at the bottom of the third biochemical tank, so that the dissolved oxygen in the sewage is increased to 0.5mg/LIn the interval of 1-3 days, the added compound bacteria convert part of organic substances in the water body into water quality purifying agent functional enzyme with the water quality purifying function;
s5, performing denitrification treatment, namely conveying the sewage treated in the third biochemical pool to a fourth biochemical pool, adding composite bacteria consisting of bacillus, brevibacterium and pseudomonas into the fourth biochemical pool, wherein the weight ratio of the bacillus, the brevibacterium and the pseudomonas is 1: 1: 1, the input amount is 4g/m3Meanwhile, a stirring device arranged above the fourth biochemical pool is used for stirring to accelerate the reaction efficiency, the reaction time is 4 hours, and the added composite bacteria convert part of organic substances in the water body into deodorant functional enzyme with a deodorization function;
s6, purifying, namely conveying the sewage treated in the fourth biochemical tank to a fifth biochemical tank, and observing and detecting whether the sewage in the fifth biochemical tank reaches a discharge standard;
s7, performing flocculation treatment, namely conveying the sewage treated in the fifth biochemical tank to a sixth biochemical tank, and adding composite bacteria consisting of bacillus, aerogenic bacillus, alcaligenes and flavobacterium into the sixth biochemical tank, wherein the weight ratio of the bacillus, the aerogenic bacillus, the alcaligenes and the flavobacterium is 1: 1: 1: 1; the input amount is 5-10g/m3And standing for 2-5 days.
Example two
Referring to fig. 1, a method for recycling and preparing a derivative of aquaculture sewage comprises the following steps:
s1, performing solid-liquid separation, namely flushing the breeding house by using clean water, flushing animal excrement and food residues into a first sewage collecting tank, then conveying the first sewage collecting tank into a solid-liquid separator for primary solid-liquid separation, conveying solid substances subjected to primary solid-liquid separation into a methane tank to generate methane for power generation, conveying the separated liquid into an oxidation pond, introducing the purified water subjected to flocculation treatment in a sixth biochemical tank into the breeding house for recycling or directly discharging, wherein the contained soil conditioner, water quality purifying agent, liquid fertilizer and deodorant function enzyme can improve the surrounding ecological environment, installing a second sewage collecting tank at the water outlet end of the methane tank, installing a screw stacking machine at the water outlet end of the second sewage collecting tank, performing secondary solid-liquid separation on the sewage in the second sewage collecting tank by using the screw stacking machine, and conveying the separated solid into the methane tank;
s2, performing disinfection treatment, namely conveying the liquid in the oxidation pond after the primary separation to a first biochemical pond, and adding composite bacteria consisting of bacillus subtilis and pseudomonas aeruginosa in the first biochemical pond, wherein the weight ratio of the bacillus subtilis to the pseudomonas aeruginosa is 1: 1, the input amount of the composite bacteria consisting of the bacillus subtilis and the pseudomonas aeruginosa is 6g/m3Meanwhile, oxygen is supplied by a microporous aeration head arranged at the bottom of the first biological pond, the dissolved oxygen in the sewage is increased to 1.0mg/L, the disinfection time is 4 days, the microorganisms in the water body in the first biological pond are excited by the composite bacteria added in the disinfection process to proliferate, and part of organic substances in the water body are converted into liquid fertilizer functional enzyme capable of promoting plant growth;
s3, degrading toxicity, conveying the sewage subjected to disinfection treatment to a second biochemical pool, and adding composite bacteria consisting of pseudomonas, arthrobacter, actinomycetes and fungi into the second biochemical pool, wherein the weight ratio of the pseudomonas to the arthrobacter to the actinomycetes to the fungi is 1: 1: 1: 1; the input amount is 3-9g/m3Meanwhile, oxygen is supplied by a microporous aeration head arranged at the bottom of the second biochemical tank, the dissolved oxygen in the sewage is increased to 1.0mg/L for 2 days, and part of organic substances in the water body are converted into functional enzyme with the soil improvement function by the added compound bacteria in the degradation process;
s4, removing nutrient substances, conveying the detoxified sewage to a third biochemical pool, adding composite bacteria consisting of bacillus, alkalibacter, pseudomonas and flavobacterium in the third biochemical pool, wherein the weight ratio of the bacillus, the alkalibacter, the pseudomonas and the flavobacterium is 1: 1: 1: 1, the input amount is 6g/m3Meanwhile, oxygen is supplied by a microporous aeration head arranged at the bottom of the third biochemical tank, the dissolved oxygen in the sewage is increased to 1.0mg/L for 2 days, and the added composite bacteria convert part of organic substances in the water body into water quality purifying agent functional enzyme with the water quality purifying function;
s5, denitrification treatment, namely conveying the sewage treated in the third biochemical poolSending the mixture to a fourth biochemical pool, and adding composite bacteria consisting of bacillus, brevibacterium and pseudomonas into the fourth biochemical pool, wherein the weight ratio of the bacillus to the brevibacterium to the pseudomonas is 1: 1: 1, the input amount is 6g/m3Meanwhile, a stirring device arranged above the fourth biochemical pool is used for stirring to accelerate the reaction efficiency, the reaction time is 6 hours, and the added composite bacteria convert part of organic substances in the water body into deodorant functional enzyme with a deodorization function;
s6, purifying, namely conveying the sewage treated in the fourth biochemical tank to a fifth biochemical tank, and observing and detecting whether the sewage in the fifth biochemical tank reaches a discharge standard;
s7, performing flocculation treatment, namely conveying the sewage treated in the fifth biochemical tank to a sixth biochemical tank, and adding composite bacteria consisting of bacillus, aerogenic bacillus, alcaligenes and flavobacterium into the sixth biochemical tank, wherein the weight ratio of the bacillus, the aerogenic bacillus, the alcaligenes and the flavobacterium is 1: 1: 1: 1; the input amount is 5-10g/m3And standing for 2-5 days.
EXAMPLE III
Referring to fig. 1, a method for recycling and preparing a derivative of aquaculture sewage comprises the following steps:
s1, performing solid-liquid separation, namely flushing the breeding house by using clear water, flushing animal excrement and food residues into a first sewage collecting pool, then conveying the first sewage collecting pool into a solid-liquid separator for primary solid-liquid separation, conveying solid matters after the primary solid-liquid separation into a methane tank to generate methane for power generation, conveying the separated liquid into an oxidation pond, mounting a second sewage collecting pool at the water outlet end of the methane tank, mounting a screw stacking machine at the water outlet end of the second sewage collecting pool, performing secondary solid-liquid separation on sewage in the second sewage collecting pool by using the screw stacking machine, and conveying the separated solid into the methane tank;
s2, performing disinfection treatment, namely conveying the liquid in the oxidation pond after the primary separation to a first biochemical pond, and adding composite bacteria consisting of bacillus subtilis and pseudomonas aeruginosa in the first biochemical pond, wherein the weight ratio of the bacillus subtilis to the pseudomonas aeruginosa is 1: 1, composite bacterium investment composed of Bacillus subtilis and Pseudomonas aeruginosaThe amount is 8g/m3Meanwhile, oxygen is supplied by a microporous aeration head arranged at the bottom of the first biological pond, dissolved oxygen in the sewage is increased to 1.5mg/L, the disinfection time is 5 days, the microorganisms in the water body in the first biological pond are excited by the added composite bacteria in the disinfection process to proliferate, part of organic substances in the water body are converted into liquid fertilizer functional enzyme capable of promoting plant growth, and part of organic substances in the water body are converted into functional enzyme with a soil improvement function by the added composite bacteria in the degradation process;
s3, degrading toxicity, conveying the sewage subjected to disinfection treatment to a second biochemical pool, and adding composite bacteria consisting of pseudomonas, arthrobacter, actinomycetes and fungi into the second biochemical pool, wherein the weight ratio of the pseudomonas to the arthrobacter to the actinomycetes to the fungi is 1: 1: 1: 1; the input amount is 8g/m3Meanwhile, oxygen is supplied by a microporous aeration head arranged at the bottom of the second biochemical tank, so that the dissolved oxygen in the sewage is increased to 1.5mg/L for 3 days;
s4, removing nutrient substances, conveying the detoxified sewage to a third biochemical pool, adding composite bacteria consisting of bacillus, alkalibacter, pseudomonas and flavobacterium in the third biochemical pool, wherein the weight ratio of the bacillus, the alkalibacter, the pseudomonas and the flavobacterium is 1: 1: 1: 1, the input amount is 8g/m3Meanwhile, oxygen is supplied by a microporous aeration head arranged at the bottom of the third biochemical tank, so that the dissolved oxygen in the sewage is increased to 1.5mg/L for 3 days;
s5, performing denitrification treatment, namely conveying the sewage treated in the third biochemical pool to a fourth biochemical pool, adding composite bacteria consisting of bacillus, brevibacterium and pseudomonas into the fourth biochemical pool, wherein the weight ratio of the bacillus, the brevibacterium and the pseudomonas is 1: 1: 1, the input amount is 8g/m3Meanwhile, a stirring device arranged above the fourth biochemical pool is used for stirring to accelerate the reaction efficiency, and the reaction time is 8 hours;
s6, purifying, namely conveying the sewage treated in the fourth biochemical tank to a fifth biochemical tank, and observing and detecting whether the sewage in the fifth biochemical tank reaches a discharge standard;
s7, performing flocculation treatment, namely conveying the sewage treated in the fifth biochemical tank to a sixth biochemical tank, and adding composite bacteria consisting of bacillus, aerogenic bacillus, alcaligenes and flavobacterium into the sixth biochemical tank, wherein the weight ratio of the bacillus, the aerogenic bacillus, the alcaligenes and the flavobacterium is 1: 1: 1: 1; the input amount is 5-10g/m3And standing for 2-5 days.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (2)
1. A preparation method for recycling a derivative of aquaculture sewage is characterized by comprising the following steps:
s1, performing solid-liquid separation, namely flushing the breeding house by using clear water, flushing animal wastes and food residues into a first sewage collecting tank, then conveying the first sewage collecting tank into a solid-liquid separator for primary solid-liquid separation, conveying solid matters after the primary solid-liquid separation into a methane tank to generate methane for power generation, and conveying liquid after the separation into an oxidation pond;
s2, performing disinfection treatment, namely conveying the liquid in the oxidation pond after the primary separation to a first biochemical pond, and adding composite bacteria consisting of bacillus subtilis and pseudomonas aeruginosa in the first biochemical pond, wherein the weight ratio of the bacillus subtilis to the pseudomonas aeruginosa is 1: 1, the input amount of the composite bacteria consisting of the bacillus subtilis and the pseudomonas aeruginosa is 2-10g/m3Meanwhile, oxygen is supplied by a microporous aeration head arranged at the bottom of the first biological pond, dissolved oxygen in the sewage is increased to 0.5-2.0mg/L, the disinfection time is 3-6 days, and the added compound bacteria in the disinfection process excite microorganisms in the water body in the first biological pond to proliferate, so that part of organic substances in the water body are converted into liquid fertilizer functional enzyme capable of promoting plant growth;
s3, degrading toxicity, conveying the sewage after the disinfection treatment to a second biochemical pool, and carrying out second biochemical treatmentAdding composite bacteria consisting of pseudomonas, arthrobacter, actinomycetes and fungi into the pool, wherein the weight ratio of the pseudomonas to the arthrobacter to the actinomycetes to the fungi is 1: 1: 1: 1; the input amount is 3-9g/m3Meanwhile, oxygen is supplied by a microporous aeration head arranged at the bottom of the second biochemical tank, the dissolved oxygen in the sewage is increased to 0.5-2.0mg/L for 1-3 days, and the added composite bacteria convert part of organic substances in the water body into functional enzyme with the soil improvement function in the degradation process;
s4, removing nutrient substances, conveying the detoxified sewage to a third biochemical pool, adding composite bacteria consisting of bacillus, alkalibacter, pseudomonas and flavobacterium in the third biochemical pool, wherein the weight ratio of the bacillus, the alkalibacter, the pseudomonas and the flavobacterium is 1: 1: 1: 1, the input amount is 4-9g/m3Meanwhile, oxygen is supplied by a microporous aeration head arranged at the bottom of the third biochemical tank, the dissolved oxygen in the sewage is increased to 0.5-2.0mg/L for 1-3 days, and the added composite bacteria convert part of organic substances in the water body into water quality purifying agent functional enzyme with the water quality purifying function;
s5, performing denitrification treatment, namely conveying the sewage treated in the third biochemical pool to a fourth biochemical pool, adding composite bacteria consisting of bacillus, brevibacterium and pseudomonas into the fourth biochemical pool, wherein the weight ratio of the bacillus, the brevibacterium and the pseudomonas is 1: 1: 1, the input amount is 4-8g/m3Meanwhile, a stirring device arranged above the fourth biochemical pool is used for stirring to accelerate the reaction efficiency, the reaction time is 4-8 hours, and the added composite bacteria convert part of organic substances in the water body into deodorant enzyme with a deodorization function;
s6, purifying, namely conveying the sewage treated in the fourth biochemical tank to a fifth biochemical tank, and observing and detecting whether the sewage in the fifth biochemical tank reaches a discharge standard;
s7, flocculating treatment, namely conveying the sewage treated in the fifth biochemical pool to a sixth biochemical pool, and adding composite bacteria consisting of bacillus, aerobacter, alcaligenes and flavobacterium in the sixth biochemical pool, wherein the bacillus isBacillus, aerobacter, alcaligenes and flavobacterium according to the weight ratio of 1: 1: 1: 1; the input amount is 5-10g/m3Standing for 2-5 days;
the recycling preparation method of aquaculture sewage derivatives as claimed in claim 1, wherein the purified water after flocculation treatment in the sixth biochemical pond can be introduced into the aquaculture house for recycling or directly discharged, and soil improvement agent, water quality purification agent, liquid fertilizer, deodorant functional enzyme contained therein can improve the surrounding ecological environment.
2. The recycling preparation method of aquaculture sewage derivatives as claimed in claim 1, wherein a second sewage collecting tank is installed at the water outlet end of said biogas digester, a screw stacking machine is installed at the water outlet end of said second sewage collecting tank, the second solid-liquid separation is performed on the sewage in the second sewage collecting tank by said screw stacking machine, and the separated solid is transported to the biogas digester.
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