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42results about How to "Speed ​​up the composting process" patented technology

Method for rapid aerobic composting

The invention discloses a method for rapid aerobic composting, comprising the following steps: uniformly mixing excess sludge after sewage treatment with straw, placing the mixture in a composting reactor for segmental aerobic composting, and then post-decomposing to obtain a fertilizer, wherein the segmented aerobic composting includes a medium temperature stage, a high temperature stage and a harmless stage. In the medium temperature stage, the composting temperature is controlled to 30-40 DEG C, and the composting time is 10-24 hours; in the high temperature stage, the composting temperature is controlled to 50-60 DEG C and the composting time is 46-60 h; and in the harmless stage, the composting temperature is controlled to 60-75 DEG C, and the composting time is 1-3 h. By the segmented aerobic composting, the composting reaction speed can be accelerated, and the time of composting compost materials is shortened to 72 hours. Thereby, composting cost is greatly saved, and the sanitary environment is remarkably improved. In addition, the segmented aerobic composting method can help realize thorough harmlessness of composting and eliminate secondary pollution of decomposing. Decomposed materials are odorless and tasteless, forced ventilation is not required, and the post-decomposing process is greatly simplified.
Owner:JIANGNAN UNIV +1

Organic garbage compost reactor

The invention discloses a compost reactor for organic garbage treatment, and particularly relates to an organic garbage compost reactor with high efficiency and high automation degree. The compost reactor comprises a feed chute (21) and a discharge chute (34), wherein the two chutes are aligned and positioned at the two ends of a container respectively; a long cylindrical container (11) is arranged between the feed chute and the discharge chute and is supported by at least one pair of rollers (12) rotating along the long axis and rotates; circular plates (15) and (16) at the two ends of the container are connected with troughs; holes are formed in the middle parts of the circular plates; a round-collar cylindrical member (28) in the trough is connected with the holes of the circular plates; a rubber sealing member (33) is arranged between the round-collar cylindrical member and an adjacent circular plate; conveying devices (29) and (39) are mounted in the two troughs; a movable component is horizontally arranged along the round-collar cylindrical member and is mounted on the adjacent circular plate and can rotate therein; a long tube axle (46) is arranged along the axial direction of the container. The whole compost reactor can run automatically.
Owner:张家港市普研机械科技有限公司

Preparation method of soil conditioner based on garden green waste and livestock and poultry manure

The invention belongs to the field of fertilizer processing, and particularly relates to a preparation method of a soil conditioner based on garden green waste and livestock and poultry manure, which comprises the following steps: adding dried and crushed livestock and poultry manure, aerobic fermentation biological bacteria, starch and water into crushed and screened green waste, and fully and uniformly mixing; conveying the uniformly mixed materials to a fermentation field, and carrying out aerobic fermentation; after fermentation, drying in the sun to obtain secondary fine powder; taking 50-100 parts by weight of the secondary fine powder product, 1-3 parts by weight of urea, 1-2 parts by weight of a calcium magnesium phosphate fertilizer, 1-2 parts by weight of potassium chloride and 4-10 parts by weight of a water-retaining agent, and fully and uniformly mixing through mixing equipment, and obtaining the soil conditioner. By adding the exogenous additive, the composting process is promoted, the quality of a compost product is improved, the compost product is converted into a soil conditioner product to be applied to the field of soil improvement, and finally a circular economy closed loop is formed; the mode is low in one-time investment and low in production condition requirement; and the product has obvious effects on improving the soil structure and improving the water-retaining and fertilizer-retaining capabilities of the soil.
Owner:WUXI MISHO ECOLOGY LANDSCAPE

Odor self-regulation composting system and process

The invention relates to the technical field of kitchen waste treatment, in particular to an odor self-regulation composting system and process. The system comprises a composting fermentation system and a composting aging system; the composting fermentation system is a composting closed space formed by a composting chamber, and the composting aging system is an aging closed space formed by an aging chamber; a plurality of aeration openings are formed in the bottom end of the composting chamber and are communicated with the ageing closed space through pipelines; a plurality of aeration openings are formed in the bottom end of the aging chamber and are communicated with the compost closed space through pipelines. The process comprises the following steps: pretreating the kitchen waste; carrying out the aerobic composting in the composting chamber, and carrying out the decomposition and aging in the aging chamber; in the composting fermentation period, conveying odor generated in the composting chamber into the composting materials in the aging chamber, and degrading and purifying the odor; conveying the odor at the upper part of the aging chamber to a composting chamber, and adjusting the C/N and pH value of the composting material. The odor self-regulation can be realized, the nitrogen loss in the composting process is less, and the nitrogen in the composting product is increased.
Owner:JIANGSU CRRC ENVIRONMENT CO LTD

Rural domestic garbage composting device based on tipping bucket type composting tanks and composting method thereof

The invention provides a rural domestic garbage composting device based on tipping bucket type composting tanks and a composting method thereof. A pretreatment chamber is provided with a garbage secondary sorting area and a crusher, and an outlet of the crusher is connected with a main fermentation chamber through a belt conveyor; more than three movable tipping bucket type composting tanks are sequentially arranged in the main fermentation chamber, a feeding and discharging chamber is arranged between the main fermentation chamber and a post-fermentation chamber, and more than three fixed tipping bucket type composting tanks are arranged in the post-fermentation chamber; the bottoms of the main fermentation chamber and the post-fermentation chamber are respectively provided with a leachate collecting branch tank and a leachate collecting main tank, the leachate collecting main tanks are communicated with a water collecting well and a eachate collecting pool, and the leachate collecting pool is respectively communicated with a leachate back-spraying pipe of the main fermentation chamber and a leachate back-spraying pipe of the post-fermentation chamber through pumps. After secondary sorting, organic household garbage is added into the movable tipping bucket type composting tanks to complete main composting fermentation, and then fermentation and decomposition are conducted after turning. According to the method, recycling, reduction and harmlessness of the household garbage can be realized.
Owner:CHENGDU UNIVERSITY OF TECHNOLOGY

Organic fertilizer produced by using sugarcane filter mud and municipal sludge and preparation method of organic fertilizer

The invention discloses an organic fertilizer produced by using sugarcane filter mud and municipal sludge. The organic fertilizer is prepared from the following raw materials, in parts by weight: 90-110 parts of the sugarcane filter mud, 80-100 parts of the municipal sludge, 30-40 parts of straw, 13-27 parts of rape seed cake, 20-30 parts of cassava residues, 19-26 parts of molasses, 7-17 parts of fish meal, 0.3-0.5 part of a decomposed microbial inoculum, 0.2-0.5 part of a heavy metal passivator A, 0.4-0.7 part of a heavy metal passivator B and 0.5-1.2 parts of an azotobacter fertilizer. The invention also provides a preparation method of the organic fertilizer produced by using the sugarcane filter mud and the municipal sludge. According to the formula and preparation method provided by the invention, the organic fertilizer obtained by fermentation by using the formula and the preparation method can continuously passivate heavy metals, accelerate the mineralization process of organic matter, improve composting efficiency, reduce nitrogen loss, and improve quality of sludge composting products; and the organic fertilizer has a good decomposing effect and high total nutrients, and is safe to crops.
Owner:GUANGXI BOSSCO ENVIRONMENTAL PROTECTION TECH
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