30results about How to "Reduce composting costs" patented technology

The invention relates to a high rate composting method and equipment thereof. The method comprises the following steps: sending organic solid waste to separation equipment for separation and recycling; making the waste into grains and sending the grains into a materialized pretreatment groove; adding a wetting agent, a bond dissociation agent and water beyond saturation state of materials; after stirring, sending the mixture into a high speed stable kettle for heating and pressurizing; maintaining the material in the reaction kettle at liquid and solid state; adding an oxidizer and a heavy metal remover; after reducing pressure to reduce pressure in a vessel, sending the mixture to a high speed activation kettle; adding a softening agent and an activation agent for an activation reaction under the condition of increasing temperature and pressure; and carrying out steam instant explosion operation by leading material to a product finery and controlling humidity, granularity and nutriment in a fertilizer within a range as required. By the method, the organic waste can be transferred to high quality compost in an hour and hydroscopic property, moisture retaining quality, adsorptivityof N, P, K and trace elements needed by plants, ventilation property, thermal insulation, flood-resistance and desertification resistance can be improved greatly, bacterium and parasites can be killed completely, poisonous organic compound can be decomposed and excess heavy metal in material can be stabilized or removed.

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.

The invention relates to a special nutrition pot for a Gobi desert, a preparation method and an application thereof. The special nutrition pot for the Gobi desert is prepared from the following raw materials in percentages by weight: 55-65% of sludge and agricultural waste fermentation nutrient matrix, 25-30% of bentonite, 5-10% of attapulgite, 3.5-4% of biochar, 0.7-1.2% of a biodegradable flocculant and 0.3-0.5% of a physical light mixture. On one hand, the environmental protection problem of harmless resource utilization of production and life sludge wastes and agricultural wastes is solved; and on the other hand, organic matters in the sludge wastes and agricultural wastes can be effectively utilized, the finally produced special nutrition pot for the Gobi desert has the effects of environmental biodegradablity, high-oxygen humus, heat retention property and low temperature resistance, moisture adsorption, water storage and retention, drought avoidance, root protection, slow release of nutrients, land fertilization and soil improvement, and is suitable form massive industrial seedling of tree seedlings; use of a lot of plastic containers is reduced; the roots are not damaged in transplantation; and the special nutrition pot is especially suitable for popularization in alpine regions, water-deficient areas and serious soil desertification areas.

The invention discloses a method for producing an organic fertilizer special for tobacco by taking pig manure and cake fertilizer as raw materials and the organic fertilizer special for tobacco. The method comprises: introducing musca domestica ovum to the surface of a scientific compatible formula material, so as to enable hatched musca domestica larva to perform biological conversion on a culture material and to convert the formula material of the organic fertilizer special for tobacco into the organic fertilizer special for tobacco, wherein the formula material is composed of the following compositions in parts by weight: 80-90 parts of pig manure and 20-10 parts of a cake fertilizer, the cake fertilizer is rapeseed cake or a mixture of rapeseed cake and peanut bran, and the water content of pig manure is 70-80%. By utilizing musca domestica larva and employing the cake fertilizer commonly utilized in tobacco plantation and combining pig manure, the organic fertilizer special for tobacco is produced within 5-6 days and has the fertilizer efficiency higher than routine microbe compost and low cost, and the processing problem of pig manure and the technological problem of effective fertilizer supply during tobacco plantation are effectively solved. In the process of producing the organic fertilizer special for tobacco, musca domestica mature larva is produced, the compost cost is further reduced and economic benefit is increased.

The invention provides a treatment method for reducing toxicity of tanning sludge and belongs to the field of treatment of solid wastes. The treatment method mainly comprises the following steps: performing pre-composting and fine composting treatment, taking tanning sludge as a raw material, preferentially taking straws, chicken manure, fly ash and bentonite as filled materials to mix with co-composting manure, performing thorough decomposition to reduce biotoxicity, and fixing heavy metals so as to achieve aims of hazard-free treatment and recycling. Most of the materials involved in the method disclosed by the invention are wastes and are cheap and wide in source, the process is simple in operation, process parameters are easily controlled, and large-scale production is facilitated. Therefore, the method disclosed by the invention has a certain environmental and economic benefits.

The invention belongs to the field of resource utilization of solid waste, and particularly relates to application of oil shale semicoke and a modified material of the oil shale semicoke as a compostadditive and a method for promoting composting. The invention discloses application of oil shale semicoke and a modified material thereof as a compost additive. Oil shale semicoke or oil shale semicoke subjected to acid-base and high-temperature modification activation is mixed with compost raw materials, composting is performed after uniform stirring, the pore structure of a compost body can be improved, degradation of organic matter is promoted, and the composting period is shortened; volatilization of ammonia gas can be inhibited, loss of N nutrients is reduced, and composting quality is improved; CH4 and N2O gases generated by an anaerobic environment in the composting process are greatly reduced; in addition, the oil shale semicoke belongs to solid waste, is low in price and huge in quantity, is used as a porous additive to be applied to the field of composting, resource utilization of the waste can be realized and wastes can be changed into valuable things, and organic pollutantssuch as polycyclic aromatic hydrocarbon and the like existing in the semicoke can be degraded by microorganisms, so that the environmental pollution is reduced.

Provided are a fast composting technique suitable for a cold area and a preparation method of a microbial inoculant. The method comprises the steps of (1) preparing heavy metal passivating agent in compost, (2) preparing compost compound microorganism inoculant, (3) preparing compost material, (4) preparing air-breather, (5) placing the compost material on the air-breather, centered around the straw bundle, placing the compost material in long strip bundles with 1.5 meters height, 8-10 meters length and 2.5-3 meters of width, making the sections into trapezoidal or semi-oval shape, using air blower to ventilate the straw bundle, controlling the ventilatory capacity at 2-4 cubic meters/hour in the beginning of the heating stage of the compost material, controlling the ventilatory capacity at 0.5-1.5 cubic meters/hour in the fermenting stage, and at last finishing the livestock manure high temperature aerobic composting process. The method can be applied in the fields of resource utilization of waste materials and organic fertilizer production.

The invention discloses a method for reducing emission of ammonia methane gas during sewage sludge composting.The method includes following steps: placing calcium superphosphate and fungicide into a sewage sludge composting material, mixing fully, and composting, wherein adding quantity of calcium superphosphate is 2-4% of wet weight of the composting material, adding quantity of the fungicide is 0.05-0.2% of the wet weight of the composting material; placing corn straw into the sewage sludge composting material, and a weight ratio of the sewage sludge composting material to the corn straw is 85:10-20.A continuous forced ventilation mode is adopted for composting, and ventilation rate is 0.15-0.25 L.kg-1 DM.min-1.The method has the advantages of low cost, wide application range and simple operation, emission of ammonia and methane gas is reduced remarkably during sewage sludge composting, emission reducing rate of ammonia emission can reach 63%, and emission reducing rate of methanol can reach 70%; nutrition content in a composting product can be increased, composting quality can be improved, and the method has popularization value.

The invention discloses a method for producing an organic fertilizer special for tobacco through biotransformation of pig manure and the fertilizer special for tobacco. The method comprises: introducing hermetia illucens ovum to the surface of a scientific compatible formula material, so as to enable hatched hermetia illucens larva to perform biological conversion on a culture material and to convert the formula material of the organic fertilizer special for tobacco into the organic fertilizer special for tobacco, wherein the formula material is composed of the following compositions in parts by weight: 80-90 parts of pig manure and 20-10 parts of a cake fertilizer, the cake fertilizer is rapeseed cake or a mixture of rapeseed cake and peanut bran, and the water content of pig manure is 70-80%. By utilizing hermetia illucens larva and employing the cake fertilizer commonly utilized in tobacco plantation and combining pig manure, the organic fertilizer special for tobacco is produced within 20 days and has the fertilizer efficiency higher than routine microbe compost and low cost, and the processing problem of pig manure and the technological problem of effective fertilizer supply during tobacco plantation are effectively solved. In the process of producing the organic fertilizer special for tobacco, hermetia illucens mature larva is produced, the compost cost is further reduced and economic benefit is increased.

The invention discloses a method for producing an organic fertilizer special for tobacco by utilizing ptecticus aurifer larva and the organic fertilizer special for tobacco. The method comprises: introducing ptecticus aurifer ovum to the surface of a scientific compatible formula material, so as to enable hatched ptecticus aurifer larva to perform biological conversion on a culture material and to convert the formula material of the organic fertilizer special for tobacco into the organic fertilizer special for tobacco, wherein the formula material is composed of the following compositions in parts by weight: 80-90 parts of pig manure and 20-10 parts of a cake fertilizer, the cake fertilizer is rapeseed cake or a mixture of rapeseed cake and peanut bran, and the water content of pig manure is 70-80%. By utilizing ptecticus aurifer larva and employing the cake fertilizer commonly utilized in tobacco plantation and combining pig manure, the organic fertilizer special for tobacco is produced within about 15 days and has the fertilizer efficiency higher than routine microbe compost and low cost, and the processing problem of pig manure and the technological problem of effective fertilizer supply during tobacco plantation are effectively solved. In the process of producing the organic fertilizer special for tobacco, ptecticus aurifer mature larva is produced, the compost cost is further reduced and economic benefit is increased.

The invention discloses a sandy soil improver with a phosphorus stabilizing effect and a preparation method thereof. The method has the advantages that firstly, a sludge composting process is improved, the performance of a sludge composting product is improved, and the sludge composting cost is reduced; and secondly, a phosphorus stabilizing effect is given to sludge compost, and the application prospect is expanded.

The invention discloses a multielement organic matter mixed film-covering aerobic composting device which comprises a fermentation bin, a plurality of frame rods, a plurality of telescopic rods, a semi-permeable film, a liquid collecting tank, a liquid collecting pipe, a spraying pipe, an air blower and an aeration pipe, wherein the frame rod is arched, and the frame rod is arranged at the top of the fermentation bin; the telescopic rods are arranged between the adjacent frame rods; the semi-permeable film is arranged above the frame rod; the liquid collecting tank is arranged underground outside the fermentation bin; one end of the liquid collecting pipe is arranged at the bottom of the fermentation bin, and the other end penetrates through the fermentation bin and is connected with the liquid collecting tank; one end of the spraying pipe is arranged at the top of the fermentation bin, and the other end penetrates through the fermentation bin and is connected with the liquid collecting tank; the air blower is arranged on the ground outside the fermentation bin; and one end of the aeration pipe is arranged at the bottom of the fermentation bin, and the other end penetrates through the fermentation bin and is connected with the air blower. The device is beneficial to heat preserving of the fermentation heap, does not influence biological decomposition of multielement organic matters, and has the advantages of preventing odor from escaping, reducing the occupied area, reducing the investment and operation cost and the like.

The invention provides an organic fertilizer compost stirring device, and mainly relates to the field of stirring equipment. The organic fertilizer compost stirring device comprises a tank body, a mounting plate is mounted on the top surface of the tank body, a motor is mounted on the top surface of the mounting plate through a mounting seat, a coupler is mounted at the bottom end of a rotating shaft of the motor, a rotating shaft is mounted at the bottom end of the coupler, the rotating bottom end is connected with a vertical rod through a connecting block, and a plurality of uniformly distributed mounting blocks are mounted at the bottom end of the vertical rod. The device has the beneficial effects that the device is simple in structure and convenient to operate, plant substances such as crop stalks, green manure and weeds can be crushed by arranging a cutting blade, so that the plant substances such as the crop stalks, the green manure and the weeds can be mixed; and meanwhile through cooperation of a first stirring plate and a second stirring plate, the cut plant substances such as crop stalks, green manure and weeds are fully mixed and stacked with soil, night soil, garbage and the like, and crushing and stirring are integrated, so the composting efficiency is improved, the composting cost is reduced, and convenience is brought to organic fertilizer composting.