Disclosed are compositions and methods of making a liquid fertilizer additive of biodegradable polymeric and/or oligomeric nitrification inhibitors comprised of utilizing a non-aqueous polar, aprotic organo liquid (NAPAOL) as the reaction medium for the reaction of aldehyde(s) with cyano-containing nitrification inhibitors that have one or more aldehyde reactive groups selected from the group consisting of a) primary, b) secondary amines, c) amides, d) thiols, e) hydroxyls and f) phenols.

Disclosed are compositions and methods of making a liquid fertilizer additive of biodegradable polymeric and/or oligomeric nitrification inhibitors comprised of utilizing a non-aqueous polar, aprotic organo liquid (NAPAOL) as the reaction medium for the reaction of aldehyde(s) with cyano-containing nitrification inhibitors that have one or more aldehyde reactive groups selected from the group consisting of a) primary, b) secondary amines, c) amides, d) thiols, e) hydroxyls and f) phenols.

Disclosed are a special fertilizer for intercropping maize and peanuts and a cultivation method for maintaining soil organic carbon (SOC) balance, belonging to the technical field of SOC balance. The special fertilizer for intercropping maize and peanuts includes the following raw materials: coated urea, heavy superphosphate, ammonium sulfate, fermented soybean meal, bentonite, sodium molybdate, borax, humic acid, ammonium dihydrogen phosphate, plant ash and zinc sulfate heptahydrate. The cultivation method includes the steps of land selection, land preparation, fertilizing, sowing, field management, and rotation.

A mineral organic fertilizer composition obtained by a process comprising the following steps performed homogeneously mix having a specific predetermined percentage (%) by weight relative to the total weight of the mineral organic fertilizer composition, specifically homogeneously mix a coal slag composition, the micronutrient solution with the manure composition to form a homogeneous mixture, in which, the homogeneous mixture is added with microbiological composition; composting the homogeneous mixture to form a foundation mixture; homogeneously mix the foundation mixture with the different mixing components comprising an NPK fertilizer and a mixture of micronutrient solutions and microbiological composition having a predetermined percentage (%) weight, and then drying or centrifuged.

A mineral organic fertilizer composition obtained by a process comprising the following steps performed homogeneously mix having a specific predetermined percentage (%) by weight relative to the total weight of the mineral organic fertilizer composition, specifically homogeneously mix a coal slag composition, the micronutrient solution with the manure composition to form a homogeneous mixture, in which, the homogeneous mixture is added with microbiological composition; composting the homogeneous mixture to form a foundation mixture; homogeneously mix the foundation mixture with the different mixing components comprising an NPK fertilizer and a mixture of micronutrient solutions and microbiological composition having a predetermined percentage (%) weight, and then drying or centrifuged.

A mineral organic fertilizer composition obtained by a process comprising the following steps performed homogeneously mix having a specific predetermined percentage (%) by weight relative to the total weight of the mineral organic fertilizer composition, specifically homogeneously mix a coal slag composition, the micronutrient solution with the manure composition to form a homogeneous mixture, in which, the homogeneous mixture is added with microbiological composition; composting the homogeneous mixture to form a foundation mixture; homogeneously mix the foundation mixture with the different mixing components comprising an NPK fertilizer and a mixture of micronutrient solutions and microbiological composition having a predetermined percentage (%) weight, and then drying or centrifuged.

A solid waste treatment method includes the steps of: degradation and sterilization via chlorination of the solid waste, stabilization of the solid waste and regeneration of biomass to reduce or eliminate solid waste. The solid waste treatment method may be utilized in agricultural, industrial or municipal settings.

A solid waste treatment method includes the steps of: degradation and sterilization via chlorination of the solid waste, stabilization of the solid waste and regeneration of biomass to reduce or eliminate solid waste. The solid waste treatment method may be utilized in agricultural, industrial or municipal settings.

An apparatus for recovering nutrients or water from digestate comprises one or more solid-liquid separation units, an ammonia stripping device, and a gas scrubbing unit. In a process, digestate is separated into a solids portion and a liquid portion. Ammonia is stripped from the liquid portion and converted into an ammonium salt solution which may be sold or used as, or blended with, a fertilizer product. Optionally, at least part of the remaining liquid portion may be concentrated to produce brine. The brine is mixed with the solids portion. The mixture may be dried and used as, or blended with, a fertilizer product. Optionally, a least part of the remaining liquid portion may be re-used as dilution water in a digester. A solids portion of the digestate, and one or both of an ammonium salt solution and a brine, may be used as fertilizer without thermal drying.

An aquaponic system includes a frame, an aquarium located at a lower portion of the frame and provided with a motor, a plurality of cultivating tanks arranged on the frame and having two opposite sides provided with a plurality of inlet tanks and a plurality of outlet tanks, and a strainer unit mounted on the frame. Each of the outlet tanks is connected with a lower one of the inlet tanks. The strainer unit includes a water outlet port connected with the water inlet pipe, a water inlet port connected with a water feeding pipe, two hollow clamping plates located between the water outlet port and the water inlet port, a filtering sponge clamped between the two clamping plates, a fertilizer ferment chamber located under the water inlet port, and a drain pipe connected with the fertilizer ferment chamber.