阅读说明：本技术 一种园林绿化废弃物的堆肥化处理方法 (Composting treatment method for landscaping waste ) 是由 赵群 苗波涛 辛艳 于 2021-11-22 设计创作，主要内容包括：本发明提供一种园林绿化废弃物的堆肥化处理方法,所述处理方法包括收集粉碎、调节碳氮比、添加改性木质素酶、接种并堆肥、翻堆。本发明的堆肥化处理方法,菌剂的使用量小,每1000kg堆肥料需要4.0-4.2kg菌剂；腐熟时间短,19-20天可完成腐熟；腐熟后有机质含量高,有机质含量为40-42%,总养分含量为3.5-3.7%；腐熟效果好,腐熟后腐熟度T值低,T值为0.44-0.46。(The invention provides a composting treatment method of landscaping waste, which comprises the steps of collecting and crushing, adjusting carbon-nitrogen ratio, adding modified ligninase, inoculating and composting, and turning over. According to the composting treatment method, the using amount of the microbial inoculum is small, and 4.0-4.2kg of the microbial inoculum is needed for every 1000kg of composting; the decomposition time is short, and the decomposition can be completed in 19-20 days; the organic matter content is high after the decomposition, the organic matter content is 40-42%, and the total nutrient content is 3.5-3.7%; the decomposition effect is good, and the T value of the decomposition degree after decomposition is low and is 0.44-0.46.)

1. A composting treatment method of landscaping waste is characterized by comprising the steps of collecting and crushing, adjusting carbon-nitrogen ratio, adding modified ligninase, inoculating and composting, and turning;

collecting and crushing, collecting landscaping wastes, controlling the water content to be 45-55%, mixing the wastes with quicklime, grinding and crushing to obtain particles with the particle size of more than 85-93% of the wastes by mass being less than 2mm, and particles with the particle size of more than 95-100% of the wastes by mass being less than 3 mm;

the above-mentionedThe fineness of the quicklime is 800-1200 meshes, and the specific surface area is 17-20m²/g；

The mass ratio of the quicklime to the landscaping waste is 1: 95-105;

adjusting the carbon-nitrogen ratio, dispersing chitosan in water, adding acetic acid to obtain a dispersion solution, heating the dispersion solution to 92-97 ℃, preserving heat for 2.5-3.5h, then filtering, adding boric acid into the filtrate, heating to 45-55 ℃, and stirring for 15-30min at 600-1000r/min to obtain a mixed solution A;

mixing the mixed solution A and urea particles, adding the mixed solution A and the urea particles into the waste, adding domestic sludge, and uniformly mixing to obtain a compost, wherein 2.5-3.5kg of the mixed solution A, 4.5-5.5kg of the urea particles and 190-210kg of the domestic sludge are mixed in every 1000kg of the waste;

the mass concentration of the acetic acid is 94-96%;

the dispersion comprises the following components in parts by mass: 4.5-5.5 parts of chitosan, 90-110 parts of water and 1.8-2.2 parts of acetic acid;

the mixed solution A comprises the following components in parts by mass: 18-22 parts of filtrate and 0.8-1.2 parts of boric acid;

the water content of the domestic sludge is 72-75%, the carbon content is 35.2-35.6%, the nitrogen content is 5.65-5.78%, and the pH value is 6.2-6.3;

adding modified lignin enzyme, wherein before inoculation, modified lignin enzyme dry powder is added into the compost, and the addition amount of each 1000kg of compost is 0.45-0.55 kg;

adding ligninase into a citric acid-sodium citrate buffer solution for dissolving, adding protamine sulfate for dissolving to obtain a mixed solution B, dissolving sodium silicate in deionized water to obtain a sodium silicate solution, adjusting the pH value to 6.6-6.8 by using a hydrochloric acid solution with the mass concentration of 8-12%, mixing the mixed solution B with the sodium silicate solution, stirring for 8-15min at 350r/min under 250-;

the concentration of the citric acid-sodium citrate buffer solution is 0.04-0.06 mol/L;

the concentration of the sodium silicate solution is 25-35 mmol/L;

the mixed solution B comprises the following components in parts by mass: 9000-11000 parts of citric acid-sodium citrate buffer solution, 0.8-1.2 parts of ligninase and 165 parts of protamine sulfate;

the mass ratio of the mixed solution B to the sodium silicate solution is 1: 5.5-6.5;

inoculating and composting, wherein the inoculating bacteria are commercial EM (effective microorganisms) bacteria, the inoculation amount of each 1000kg of compost is 2.4-2.6kg, and the compost is piled up after being inoculated;

after inoculation, adding polyferric silicate sulfate into the compost, and uniformly mixing, wherein the addition amount of the polyferric silicate sulfate is 0.8-1.2kg per 1000kg of the compost;

the preparation method of the poly-silicon ferric sulfate comprises the following steps: dissolving sodium silicate nonahydrate in water, adding concentrated sulfuric acid, mixing uniformly, adding ferrous sulfate heptahydrate, mixing uniformly to obtain a mixed solution C, putting the mixed solution C into a reaction kettle, adding concentrated nitric acid at the speed of 550r/min for completing the reaction for 2.5-3.5h, adding sodium polyacrylate, and stirring uniformly to obtain polymeric ferric silicate sulfate;

the mass concentration of the concentrated sulfuric acid is 95-98%;

the mass concentration of the concentrated nitric acid is 65-68%;

the mixed solution C comprises the following components in parts by mass: 1.8-2.2 parts of sodium silicate nonahydrate, 10-14 parts of water, 1.8-2.2 parts of concentrated sulfuric acid and 21-27 parts of ferrous sulfate heptahydrate;

the mass ratio of the added concentrated nitric acid to the mixed solution C is 1:10-12, and the concentrated nitric acid and the mixed solution C are slowly added within 18-22 min;

the mass ratio of the added sodium polyacrylate to the mixed solution C is 1: 290-310;

turning the piles, inoculating for 3 days, then turning the piles, additionally inoculating 1.5-1.7kg of commercial EM (effective microorganisms) bacteria per 1000kg of piled fertilizers during turning the piles, and additionally spraying 4.5-5.5kg of water per 1000kg of piled fertilizers;

after 10 days of inoculation, turning was again performed, and then every time the temperature of the stack exceeded 68 ℃.

Technical Field

The invention relates to a composting treatment method of landscaping waste, belonging to the technical field of biological compost.

Background

The landscaping waste refers to plant materials such as arbor and shrub trimmings (intermediate cuts), lawn trimmings, fallen leaves, branches, waste grass and flowers in gardens and flower beds, weeds and the like generated in the natural or maintenance process of greening plants in urban green lands or suburb forest lands.

The landscaping waste is excessive, which can prevent oxygen from entering into soil with poor drainage or hardened soil, thereby causing damage to plant roots, and in addition, after irrigation or rainfall, water accumulation in tree pits can be caused because the vertical leakage of water in the tree pits is easy to be blocked due to the coverage of dry branches and fallen leaves, thereby possibly causing the root rot death of trees. High density of the withered and fallen leaf cover may also cause saturation or unsaturation of surface water in the soil, resulting in oxygen deficit or drought stress in the soil.

In recent years, landscaping wastes are increasing, the treatment work is increasingly severe, the landscaping work can be served for improving the local environment only by researching efficient landscaping waste treatment strategies, and at present, large and medium-sized cities such as Beijing, Shanghai, Guangzhou and Shenzhen begin to classify, uniformly collect, crush and compost the landscaping plant wastes.

In the landscaping waste, a lot of components such as cellulose, lignin and the like which are not easy to degrade exist, and the components need a large amount of time to remove the compost, so that the composting time is long, and the efficiency of treating the landscaping waste is low.

CN102295478A discloses a method for accelerating composting and decomposition of garden waste by using a chemical decomposition agent, wherein composting efficiency is improved and decomposition time is shortened by adding sodium lignosulfonate or sodium hydroxide in cooperation with EM (effective microorganisms) or lignin degrading bacteria, but the usage amount of the microbial inoculum is large, 10kg of the microbial inoculum is needed to be used for every 1000kg of waste, and the cost is high.

CN111406462A discloses a method for improving soil by organic mulch in garden, which is characterized in that a mixture of landscaping waste, straw, dead branches and leaves and furfural residues is subjected to composting and decomposing treatment by adding a decomposing treatment solution containing microorganisms, the microbial consumption is low, the decomposing time is short, but the content of organic matters is low after composting is completed, the T value of the decomposing degree is high, and the decomposing effect is poor.

In summary, the prior art has the following disadvantages:

(1) the compost is high in decomposition degree and short in decomposition time, and the using amount of the microbial inoculum is large;

(2) the treatment method has the advantages of less microbial inoculum dosage and short decomposition time, and the compost has low organic matter content, high decomposition degree T value and poor decomposition effect.

Disclosure of Invention

The invention aims to solve the technical problem of overcoming the defects in the prior art, and provides a composting method by adding modified ligninase, a rotten regulator and other treatment modes, so that the following aims are achieved:

(1) the composting method has high decomposition degree, short decomposition time and small usage amount of microbial inoculum;

(2) the composting method has the advantages of small microbial inoculum dosage, short composting time, high organic matter content after composting, low T value of the composting degree and good composting effect.

In order to solve the technical problems, the invention adopts the following technical scheme:

a composting treatment method of landscaping waste comprises the steps of collecting and crushing, adjusting carbon-nitrogen ratio, adding modified ligninase, inoculating and composting, and turning over.

The following is a further improvement of the above technical solution:

collecting and crushing, collecting landscaping wastes, controlling the water content to be 45-55%, mixing the wastes with quicklime, grinding and crushing to obtain particles with the particle size of more than 85-93% of the wastes by mass being less than 2mm, and particles with the particle size of more than 95-100% of the wastes by mass being less than 3 mm;

the fineness of the quick lime is 800-1200 meshes, and the specific surface area is 17-20m²/g；

The mass ratio of the quicklime to the landscaping waste is 1: 95-105.

Adjusting the carbon-nitrogen ratio, dispersing chitosan in water, adding acetic acid to obtain a dispersion solution, heating the dispersion solution to 92-97 ℃, preserving heat for 2.5-3.5h, then filtering, adding boric acid into the filtrate, heating to 45-55 ℃, and stirring for 15-30min at 600-1000r/min to obtain a mixed solution A;

mixing the mixed solution A and urea particles, adding the mixed solution A and the urea particles into the waste, adding domestic sludge, and uniformly mixing to obtain a compost, wherein 2.5-3.5kg of the mixed solution A, 4.5-5.5kg of the urea particles and 190-210kg of the domestic sludge are mixed in every 1000kg of the waste;

the mass concentration of the acetic acid is 94-96%;

the dispersion comprises the following components in parts by mass: 4.5-5.5 parts of chitosan, 90-110 parts of water and 1.8-2.2 parts of acetic acid;

the mixed solution A comprises the following components in parts by mass: 18-22 parts of filtrate and 0.8-1.2 parts of boric acid;

the domestic sludge has water content of 72-75%, carbon content of 35.2-35.6%, nitrogen content of 5.65-5.78% and pH value of 6.2-6.3.

Adding modified lignin enzyme, wherein before inoculation, modified lignin enzyme dry powder is added into the compost, and the addition amount of each 1000kg of compost is 0.45-0.55 kg;

the preparation method of the ligninase dry powder comprises the steps of adding ligninase into a citric acid-sodium citrate buffer solution for dissolving, adding protamine sulfate for dissolving to obtain a mixed solution B, dissolving sodium silicate in deionized water to obtain a sodium silicate solution, adjusting the pH value to 6.6-6.8 by using a hydrochloric acid solution with the mass concentration of 8-12%, mixing the mixed solution B with the sodium silicate solution, stirring for 8-15min at 350r/min through 250 and 350r/min, standing for 17-25min after stirring, carrying out centrifugal treatment for 17-25min at 5500r/min through 4500 to remove supernatant, washing the rest precipitate with deionized water, and carrying out freeze drying at-20-30 ℃ to obtain the modified ligninase dry powder.

The concentration of the citric acid-sodium citrate buffer solution is 0.04-0.06 mol/L;

the concentration of the sodium silicate solution is 25-35 mmol/L;

the mixed solution B comprises the following components in parts by mass: 9000-11000 parts of citric acid-sodium citrate buffer solution, 0.8-1.2 parts of ligninase and 165 parts of protamine sulfate;

the mass ratio of the mixed solution B to the sodium silicate solution is 1: 5.5-6.5.

Inoculating and composting, wherein the inoculating bacteria are commercial EM (effective microorganisms) bacteria, the inoculation amount of each 1000kg of compost is 2.4-2.6kg, and the compost is piled up after being inoculated;

after inoculation, the polyferric silicate sulfate is added into the compost and mixed evenly, and the addition amount of the polyferric silicate sulfate is 0.8-1.2kg per 1000kg of compost.

The preparation method of the poly-silicon ferric sulfate comprises the following steps: dissolving sodium silicate nonahydrate in water, adding concentrated sulfuric acid, mixing uniformly, adding ferrous sulfate heptahydrate, mixing uniformly to obtain a mixed solution C, putting the mixed solution C into a reaction kettle, adding concentrated nitric acid at the speed of 550r/min for completing the reaction for 2.5-3.5h, adding sodium polyacrylate, and stirring uniformly to obtain polymeric ferric silicate sulfate;

the mass concentration of the concentrated sulfuric acid is 95-98%;

the mass concentration of the concentrated nitric acid is 65-68%;

the mixed solution C comprises the following components in parts by mass: 1.8-2.2 parts of sodium silicate nonahydrate, 10-14 parts of water, 1.8-2.2 parts of concentrated sulfuric acid and 21-27 parts of ferrous sulfate heptahydrate;

the mass ratio of the added concentrated nitric acid to the mixed solution C is 1:10-12, and the concentrated nitric acid and the mixed solution C are slowly added within 18-22 min;

the mass ratio of the added sodium polyacrylate to the mixed solution C is 1: 290-310.

Turning the piles, inoculating for 3 days, then turning the piles, additionally inoculating 1.5-1.7kg of commercial EM (effective microorganisms) bacteria per 1000kg of piled fertilizers during turning the piles, and additionally spraying 4.5-5.5kg of water per 1000kg of piled fertilizers;

after inoculation for 10 days, turning the pile again, and then turning the pile whenever the temperature of the pile exceeds 68-70 ℃;

after inoculation for 19-20 days, the compost can be thoroughly decomposed, and the pH value of the compost after the decomposition is 6.6-6.7.

Compared with the prior art, the invention has the following beneficial effects:

according to the composting treatment method, the using amount of the microbial inoculum is small, and 4.0-4.2kg of the microbial inoculum is needed for every 1000kg of composting;

the composting treatment method has short decomposition time, and can complete decomposition in 19-20 days;

the composting method has the advantages that the content of the organic matters after being decomposed is high, the content of the organic matters (calculated by dry basis) is 40-42 percent, and the total nutrient (N + P)₂O₂+K₂O) content (on a dry basis) of 3.5-3.7% (GB/T31755-2015);

the composting treatment method has good decomposition effect, the T value of the decomposition degree after decomposition is low and is 0.44-0.46 (GB/T31755-;

the composting method of example 2 has a high germination index of 95-96% (GB/T31755-2015).

Detailed Description

Example 1

(1) Collecting and pulverizing

Collecting landscaping waste, removing non-plant components such as stones and plastics, and collecting the mildewed and insect-damaged waste after simple sterilization and disinfection;

controlling the water content of the collected landscaping waste to be 50% by methods of mixing dry and wet waste, airing and drying, spraying water to preserve moisture and the like, putting the waste into a grinding and crushing machine, putting quicklime into the crushing machine to grind and crush the waste to the particle size of more than 90% by mass of less than 2mm and the particle size of more than 100% by mass of less than 3 mm;

the fineness of the quicklime is 1000 meshes, and the specific surface area is 19m²/g；

The mass ratio of the quicklime to the landscaping waste is 1: 100.

(2) Adjusting the carbon-nitrogen ratio

Dispersing chitosan in water, adding acetic acid to obtain dispersion, heating the dispersion to 95 ℃, keeping the temperature for 3h, filtering, adding boric acid into filtrate, heating to 50 ℃, and stirring at 800r/min for 20min to obtain a mixed solution A;

the mass concentration of the acetic acid is 95 percent;

the dispersion comprises the following components in parts by mass: 5 parts of chitosan, 100 parts of water and 2 parts of acetic acid;

the mixed solution A comprises the following components in parts by mass: 20 parts of filtrate and 1 part of boric acid;

mixing the mixed solution A and urea particles, adding the mixed solution A and the urea particles into waste, adding domestic sludge, and uniformly mixing to obtain compost, wherein 3kg of the mixed solution A, 5kg of the urea particles and 200kg of the domestic sludge are mixed in every 1000kg of waste;

the domestic sludge has the water content of 74 percent, the carbon content of 35.6 percent, the nitrogen content of 5.78 percent and the pH value of 6.2.

(3) Adding modified ligninase

Adding modified lignin enzyme dry powder into the compost before inoculation, wherein the addition amount of each 1000kg of compost is 0.5 kg;

adding ligninase into a citric acid-sodium citrate buffer solution, dissolving, adding protamine sulfate, dissolving to obtain a mixed solution B, dissolving sodium silicate in deionized water to obtain a sodium silicate solution, adjusting the pH to 6.7 by using a hydrochloric acid solution with the mass concentration of 10%, mixing the mixed solution B with the sodium silicate solution, stirring for 10min at 300r/min, standing for 20min after stirring, centrifuging for 20min at 5000r/min to remove supernatant, washing the rest precipitate with deionized water, and freeze-drying at-25 ℃ to obtain modified ligninase dry powder;

the concentration of the citric acid-sodium citrate buffer solution is 0.05 mol/L;

the concentration of the sodium silicate solution is 30 mmol/L;

the mixed solution B comprises the following components in parts by mass: 10000 parts of citric acid-sodium citrate buffer solution, 1 part of ligninase and 150 parts of protamine sulfate;

the mass ratio of the mixed solution B to the sodium silicate solution is 1:6.

(4) Inoculating and composting

The inoculation bacteria are commercial EM bacteria, the inoculation amount of each 1000kg of compost is 2.5kg, the compost is piled up after inoculation, the composting mode is groove type composting, and the specifications of the compost groove are 2m in length, 2m in width and 1.5m in height.

After inoculation, adding polyferric silicate sulfate into the compost, and uniformly mixing, wherein the addition amount of each 1000kg of compost is 1 kg;

the preparation method of the poly-silicon ferric sulfate comprises the following steps: dissolving sodium silicate nonahydrate in water, adding concentrated sulfuric acid, mixing uniformly, adding ferrous sulfate heptahydrate, mixing uniformly to obtain a mixed solution C, putting the mixed solution C into a reaction kettle, adding concentrated nitric acid at 500r/min, adding sodium polyacrylate, and stirring uniformly to obtain polymeric ferric silicate sulfate;

the mass concentration of the concentrated sulfuric acid is 98 percent;

the mass concentration of the concentrated nitric acid is 68 percent;

the mixed solution C comprises the following components in parts by mass: 2 parts of sodium silicate nonahydrate, 12 parts of water, 2 parts of concentrated sulfuric acid and 25 parts of ferrous sulfate heptahydrate;

the mass ratio of the added concentrated nitric acid to the mixed solution C is 1:11, and the concentrated nitric acid and the mixed solution C are slowly added within 20 min;

the mass ratio of the added sodium polyacrylate to the mixed solution C is 1: 300.

(5) Turning pile

After inoculation for 3 days, turning the pile, additionally inoculating 1.5kg of commercial EM bacteria to every 1000kg of the piled fertilizer during turning the pile, and additionally spraying 5kg of water to every 1000kg of the piled fertilizer;

turning the pile again after inoculating for 10 days, then turning the pile whenever the temperature of the pile exceeds 70 ℃, and decomposing after inoculating for 19 days;

the pH of the compost after the decomposition is 6.7.

In the composting method of example 1, the amount of microbial inoculum used is small, and 4kg of microbial inoculum is required for every 1000kg of compost;

the composting treatment method of example 1 has short decomposition time, and can complete decomposition in 19 days;

the composting method of example 1 was high in organic matter content after rotting, 42% in organic matter (dry basis), total nutrients (N + P)₂O₂+K₂O) content (on a dry basis) of 3.7% (GB/T31755 2015);

the composting method of example 1 has good decomposition effect, and the decomposition degree after decomposition is low, with a T value of 0.44 (GB/T31755-;

the composting method of example 1 has a high germination index of 96% (GB/T31755-2015).

Example 2

(1) Collecting and pulverizing

Collecting landscaping waste, removing non-plant components such as stones and plastics, and collecting the mildewed and insect-damaged waste after simple sterilization and disinfection;

controlling the water content of the collected landscaping waste to be 45% by methods of mixing dry and wet waste, airing and drying, spraying water to preserve moisture and the like, putting the waste into a grinding and crushing machine, putting quicklime into the crushing machine to grind and crush the waste into particles with the particle size of more than 85% by mass being less than 2mm, and crushing the waste into particles with the particle size of more than 95% by mass being less than 3 mm;

the fineness of the quicklime is 800 meshes, and the specific surface area is 17m²/g；

The mass ratio of the quicklime to the landscaping waste is 1: 95.

(2) Adjusting the carbon-nitrogen ratio

Dispersing chitosan in water, adding acetic acid to obtain dispersion, heating the dispersion to 92 ℃, keeping the temperature for 3.5h, filtering, adding boric acid into filtrate, heating to 45 ℃, and stirring at 600r/min for 30min to obtain a mixed solution A;

the mass concentration of the acetic acid is 94%;

the dispersion comprises the following components in parts by mass: 4.5 parts of chitosan, 90 parts of water and 1.8 parts of acetic acid;

the mixed solution A comprises the following components in parts by mass: 18 parts of filtrate and 0.8 part of boric acid;

mixing the mixed solution A and urea particles, adding the mixed solution A and the urea particles into waste, adding domestic sludge, and uniformly mixing to obtain compost, wherein 2.5kg of the mixed solution A, 4.5kg of the urea particles and 190kg of the domestic sludge are mixed in every 1000kg of waste;

the domestic sludge has water content of 72%, carbon content of 35.2%, nitrogen content of 5.65% and pH of 6.3.

(3) Adding modified ligninase

Adding modified lignin enzyme dry powder into the compost before inoculation, wherein the addition amount of each 1000kg of compost is 0.45 kg;

adding ligninase into a citric acid-sodium citrate buffer solution, dissolving, adding protamine sulfate, dissolving to obtain a mixed solution B, dissolving sodium silicate in deionized water to obtain a sodium silicate solution, adjusting the pH to 6.8 by using a hydrochloric acid solution with the mass concentration of 8%, mixing the mixed solution B with the sodium silicate solution, stirring for 15min at 250r/min, standing for 25min after stirring, centrifuging for 25min at 4500r/min to remove supernatant, washing the rest precipitate with deionized water, and freeze-drying at-20 ℃ to obtain modified ligninase dry powder;

the concentration of the citric acid-sodium citrate buffer solution is 0.04 mol/L;

the concentration of the sodium silicate solution is 25 mmol/L;

the mixed solution B comprises the following components in parts by mass: 9000 parts of citric acid-sodium citrate buffer solution, 0.8 part of ligninase and 135 parts of protamine sulfate;

the mass ratio of the mixed solution B to the sodium silicate solution is 1: 6.5.

(4) Inoculating and composting

The inoculation bacteria are commercial EM bacteria, the inoculation amount of each 1000kg of compost is 2.6kg, the compost is piled up after inoculation, the composting mode is groove type composting, and the specifications of the compost groove are 2m in length, 2m in width and 1.5m in height.

After inoculation, adding polyferric silicate sulfate into the compost, and uniformly mixing, wherein the addition amount of each 1000kg of compost is 0.8 kg;

the preparation method of the poly-silicon ferric sulfate comprises the following steps: dissolving sodium silicate nonahydrate in water, adding concentrated sulfuric acid, mixing uniformly, adding ferrous sulfate heptahydrate, mixing uniformly to obtain a mixed solution C, putting the mixed solution C into a reaction kettle, adding concentrated nitric acid at 450r/min, adding sodium polyacrylate, and stirring uniformly to obtain polymeric ferric silicate sulfate;

the mass concentration of the concentrated sulfuric acid is 95 percent;

the mass concentration of the concentrated nitric acid is 65 percent;

the mixed solution C comprises the following components in parts by mass: 1.8 parts of sodium silicate nonahydrate, 10 parts of water, 1.8 parts of concentrated sulfuric acid and 21 parts of ferrous sulfate heptahydrate;

the mass ratio of the added concentrated nitric acid to the mixed solution C is 1:10, and the concentrated nitric acid and the mixed solution C are slowly added within 18 min;

the mass ratio of the added sodium polyacrylate to the mixed solution C is 1: 290.

(5) Turning pile

After inoculation for 3 days, turning the pile, additionally inoculating 1.6kg of commercial EM bacteria to every 1000kg of the piled fertilizer during turning the pile, and additionally spraying 5.5kg of water to every 1000kg of the piled fertilizer;

turning the pile again after inoculating for 10 days, then turning the pile whenever the temperature of the pile exceeds 68 ℃, and decomposing after inoculating for 19 days;

the pH value of the compost after the decomposition is 6.6.

In the composting method of example 2, the amount of microbial inoculum used is small, and 4.2kg of microbial inoculum is required for every 1000kg of compost;

the composting treatment method of example 2 has short decomposition time, and can complete decomposition in 20 days;

the composting method of example 2 was high in organic matter content after rotting, 40% in organic matter (dry basis), total nutrients (N + P)₂O₂+K₂O) content (on a dry basis) of 3.5% (GB/T31755-2015);

the composting method of example 2 has good decomposition effect, and the decomposition degree after decomposition is low, with a T value of 0.46 (GB/T31755-;

the composting method of example 2 has a high germination index of 95% (GB/T31755-2015).

Example 3

(1) Collecting and pulverizing

Collecting landscaping waste, removing non-plant components such as stones and plastics, and collecting the mildewed and insect-damaged waste after simple sterilization and disinfection;

controlling the water content of the collected landscaping waste to be 55% by methods of mixing dry and wet waste, airing and drying, spraying water to preserve moisture and the like, putting the waste into a grinding and crushing machine, putting quicklime into the crushing machine to grind and crush the waste into particles with the particle size of more than 93% by mass being less than 2mm, and crushing the waste into particles with the particle size of more than 100% by mass being less than 3 mm;

the fineness of the quicklime is 1200 meshes, and the specific surface area is 20m²/g；

The mass ratio of the quicklime to the landscaping waste is 1: 105.

(2) Adjusting the carbon-nitrogen ratio

Dispersing chitosan in water, adding acetic acid to obtain dispersion, heating the dispersion to 97 ℃, keeping the temperature for 2.5h, filtering, adding boric acid into filtrate, heating to 55 ℃, and stirring at 1000r/min for 15min to obtain a mixed solution A;

the mass concentration of the acetic acid is 96%;

the dispersion comprises the following components in parts by mass: 5.5 parts of chitosan, 110 parts of water and 2.2 parts of acetic acid;

the mixed solution A comprises the following components in parts by mass: 22 parts of filtrate and 1.2 parts of boric acid;

mixing the mixed solution A and urea particles, adding the mixed solution A and the urea particles into waste, adding domestic sludge, and uniformly mixing to obtain compost, wherein 3.5kg of the mixed solution A, 5.5kg of the urea particles and 210kg of the domestic sludge are mixed in every 1000kg of waste;

the domestic sludge has 75% of water content, 35.5% of carbon content, 5.72% of nitrogen content and 6.3 of pH.

(3) Adding modified ligninase

Adding modified lignin enzyme dry powder into the compost before inoculation, wherein the addition amount of each 1000kg of compost is 0.55 kg;

adding ligninase into a citric acid-sodium citrate buffer solution, dissolving, adding protamine sulfate, dissolving to obtain a mixed solution B, dissolving sodium silicate in deionized water to obtain a sodium silicate solution, adjusting the pH to 6.6 by using a hydrochloric acid solution with the mass concentration of 12%, mixing the mixed solution B with the sodium silicate solution, stirring for 8min at 350r/min, standing for 17min after stirring, centrifuging for 17min at 5500r/min to remove supernatant, washing the rest precipitate with deionized water, and freeze-drying at-30 ℃ to obtain modified ligninase dry powder;

the concentration of the citric acid-sodium citrate buffer solution is 0.06 mol/L;

the concentration of the sodium silicate solution is 35 mmol/L;

the mixed solution B comprises the following components in parts by mass: 11000 parts of citric acid-sodium citrate buffer solution, 1.2 parts of ligninase and 165 parts of protamine sulfate;

the mass ratio of the mixed solution B to the sodium silicate solution is 1: 5.5.

(4) Inoculating and composting

The inoculation bacteria are commercial EM bacteria, the inoculation amount of each 1000kg of compost is 2.4kg, the compost is piled up after inoculation, the composting mode is groove type composting, and the specifications of the compost groove are 2m in length, 2m in width and 1.5m in height.

After inoculation, adding polyferric silicate sulfate into the compost, and uniformly mixing, wherein the addition amount of each 1000kg of compost is 1.2 kg;

the preparation method of the poly-silicon ferric sulfate comprises the following steps: dissolving sodium silicate nonahydrate in water, adding concentrated sulfuric acid, mixing uniformly, adding ferrous sulfate heptahydrate, mixing uniformly to obtain a mixed solution C, putting the mixed solution C into a reaction kettle, adding concentrated nitric acid at 550r/min, adding sodium polyacrylate, and stirring uniformly to obtain polymeric ferric silicate sulfate;

the mass concentration of the concentrated sulfuric acid is 95 percent;

the mass concentration of the concentrated nitric acid is 65 percent;

the mixed solution C comprises the following components in parts by mass: 2.2 parts of sodium silicate nonahydrate, 14 parts of water, 2.2 parts of concentrated sulfuric acid and 27 parts of ferrous sulfate heptahydrate;

the mass ratio of the added concentrated nitric acid to the mixed solution C is 1:12, and the concentrated nitric acid and the mixed solution C are slowly added within 22 min;

the mass ratio of the added sodium polyacrylate to the mixed solution C is 1: 310.

(5) Turning pile

After inoculation for 3 days, turning the pile, additionally inoculating 1.7kg of commercial EM bacteria to every 1000kg of the piled fertilizer during turning the pile, and additionally spraying 4.5kg of water to every 1000kg of the piled fertilizer;

turning the pile again after inoculating for 10 days, then turning the pile whenever the temperature of the pile exceeds 69 ℃, and thoroughly decomposing after inoculating for 20 days;

the pH value of the compost after the decomposition is 6.6.

In the composting method of example 3, the amount of microbial inoculum used is small, and 4.1kg of microbial inoculum is required for every 1000kg of compost;

the composting treatment method of example 3 has short decomposition time, and can complete decomposition in 20 days;

the composting method of example 3 was high in organic matter content after rotting, 41% organic matter (on a dry basis), total nutrients (N + P)₂O₂+K₂O) content (on a dry basis) of 3.6% (GB/T31755-2015);

the composting method of embodiment 3 has good decomposition effect, and the decomposition degree after decomposition is low, and the T value is 0.45 (GB/T31755-;

the composting method of example 3 has a high germination index of 96% (GB/T31755-2015).