The invention relates to a method and an arrangement for wastewater treatment, in which at least portions of the sewage sludge contained in the wastewater (0) are subjected to a hydrolysis (8). The hydrolysis (8) is carried out as a thermal hydrolysis. After the hydrolysis step (8), a drying process is (19) carried out. The drying process (19) is a process operating with positive pressure in the steam region. At least parts of the steam resulting from the drying process (19), which operates with positive pressure, are fed (20) to the portions of the sewage sludge in the thermal hydrolysis (8).

The invention relates to a method and an arrangement for wastewater treatment, in which at least portions of the sewage sludge contained in the wastewater (0) are subjected to a hydrolysis (8). The hydrolysis (8) is carried out as a thermal hydrolysis. After the hydrolysis step (8), a drying process is (19) carried out. The drying process (19) is a process operating with positive pressure in the steam region. At least parts of the steam resulting from the drying process (19), which operates with positive pressure, are fed (20) to the portions of the sewage sludge in the thermal hydrolysis (8).

[Problem] To provide a new technology with which it is possible to further increase a supply amount of divalent iron. [Solution] Provided is a divalent iron supply agent that contains: a hydrothermal reaction treatment product of a mixture containing at least one of yeast, a yeast extract, and a yeast cell wall, at least one of phosphoric acid and a phosphoric acid compound, and at least one of potassium and a potassium compound; and an iron supply raw material.

[Problem] To provide a new technology with which it is possible to further increase a supply amount of divalent iron. [Solution] Provided is a divalent iron supply agent that contains: a hydrothermal reaction treatment product of a mixture containing at least one of yeast, a yeast extract, and a yeast cell wall, at least one of phosphoric acid and a phosphoric acid compound, and at least one of potassium and a potassium compound; and an iron supply raw material.

A process for producing a commercial soil additive comprises mixing a compost composition with elementary (raw) sulphur to form a mixed material and turning the mixed material until it is substantially homogenous and until there is microbial oxidation of elementary sulphur therein to at least one sulphate.

A process for producing a commercial soil additive comprises mixing a compost composition with elementary (raw) sulphur to form a mixed material and turning the mixed material until it is substantially homogenous and until there is microbial oxidation of elementary sulphur therein to at least one sulphate.

The present invention provides compositions comprising chitooligosaccharides, methods for preparation and use thereof, including for example methods of stimulating the production of significant substances in plants. Functional Activated Nano Vacc-Fertiliceutical for Plant is used to stimulate significant substance production in plant (foliage plant, fruit tree, and flowering plant).

The present invention provides compositions comprising chitooligosaccharides, methods for preparation and use thereof, including for example methods of stimulating the production of significant substances in plants. Functional Activated Nano Vacc-Fertiliceutical for Plant is used to stimulate significant substance production in plant (foliage plant, fruit tree, and flowering plant).

Disclosed is a stable fertilizer composition including: a sulfur-containing compound; and a reaction product of a potassium-containing compound and a humectant selected from the group consisting of polyhydric alcohols, esters of polyhydric alcohols, polyalkylene glycols, and hydroxylated carboxylic acids. One version of the fertilizer composition also includes a nitrogen-containing compound; a phosphorous-containing compound; and at least one more additional macronutrient or micronutrient. The macronutrient may be selected from the group consisting of calcium and magnesium, and the micronutrient may be selected from the group consisting of zinc, manganese, iron, copper, calcium, magnesium, cobalt, boron, nickel, and molybdenum. The fertilizer composition may be essentially free of chelated metals and chelated metal salts. Methods of using a solution of the fertilizer composition for supplying plant nutrients to a plant are also disclosed.

Disclosed is a stable fertilizer composition including: a sulfur-containing compound; and a reaction product of a potassium-containing compound and a humectant selected from the group consisting of polyhydric alcohols, esters of polyhydric alcohols, polyalkylene glycols, and hydroxylated carboxylic acids. One version of the fertilizer composition also includes a nitrogen-containing compound; a phosphorous-containing compound; and at least one more additional macronutrient or micronutrient. The macronutrient may be selected from the group consisting of calcium and magnesium, and the micronutrient may be selected from the group consisting of zinc, manganese, iron, copper, calcium, magnesium, cobalt, boron, nickel, and molybdenum. The fertilizer composition may be essentially free of chelated metals and chelated metal salts. Methods of using a solution of the fertilizer composition for supplying plant nutrients to a plant are also disclosed.