The present invention concerns a method for recovering phosphorus by thermochemical reaction of a phosphorus-containing material such as an alternative fuel, for example, in the presence of calcium-containing particles in a moving bed reactor and subsequent separation of fines enriched with phosphorus from the moving bed reactor. Furthermore, the present invention concerns the use of a recyclable material obtained by the method as a fertilizer or fertilizer additive.

A organic fertilizer for controlling pollution or accumulation of heavy metal cadmium in rice and a preparation method and an application method thereof are related to the technical field of fertilizers. The fertilizer is, based on 100 kg of organic material with a water content of 15%, added with 0.05-5 kg of iron salt calculated as iron, and is also added with manganese salt, zinc salt and copper salt, wherein a mass ratio of the iron salt calculated as iron, the manganese salt calculated as manganese, the zinc salt calculated as zinc and the copper salt calculated as copper is 1:0.2-8:0.08-2:0.001-0.5.

A organic fertilizer for controlling pollution or accumulation of heavy metal cadmium in rice and a preparation method and an application method thereof are related to the technical field of fertilizers. The fertilizer is, based on 100 kg of organic material with a water content of 15%, added with 0.05-5 kg of iron salt calculated as iron, and is also added with manganese salt, zinc salt and copper salt, wherein a mass ratio of the iron salt calculated as iron, the manganese salt calculated as manganese, the zinc salt calculated as zinc and the copper salt calculated as copper is 1:0.2-8:0.08-2:0.001-0.5.

A rural bulk organic waste pollutant source comprehensive treatment system including a solid high-temperature aerobic fermentation reactor, a liquid high-temperature aerobic fermentation reactor and a multifunctional boiler is provided. A rural bulk organic waste pollutant source comprehensive treatment method. For excretion waste of a livestock farm adopting the technology of manure cleaning by urine submerging, a solid-liquid separation is firstly performed thereto, wherein solid is conveyed to the solid high-temperature aerobic fermentation reactor and fermented to produce solid organic fertilizers, and liquid is conveyed to the liquid high-temperature aerobic fermentation reactor and fermented to produce liquid organic fertilizers. For dry collection manure of a livestock and poultry farm, carbon-containing auxiliary materials, residues left after dead animals and household waste being incinerated by the multifunctional boiler, and ash generated by straw burning are added thereto, and then the mixture is conveyed to the solid high-temperature aerobic fermentation reactor and fermented to produce solid organic fertilizers. Exhaust fume and hot water produced by the multifunctional boiler pass through the solid high-temperature aerobic fermentation reactor and the liquid high-temperature aerobic fermentation reactor to heat the reactors and keep the reactors warm.

A process for preserving the initial fermentable potential of an organic substrate over time is presented. The method comprises a) determining the moisture content (HM) of the organic substrate, b) comparing the determined moisture content (HM) to a predefined moisture level (HD), c) storing only the organic substrate of which the moisture content (HM) determined in step a) corresponds to the predefined moisture content (HD), d) when a fermentable potential cannot be determined based on the moisture content (HM) alone during steps a) and c), taking measurements of the methanogenic potential of the biomass, e) comparing the measurements of the methanogenic potential of the biomass obtained during step c) to that of step a), and f) adapting the storage conditions to keep the moisture content (HM) of the organic substrate collected at a value that of the predefined moisture content (HD).

A process for preserving the initial fermentable potential of an organic substrate over time is presented. The method comprises a) determining the moisture content (HM) of the organic substrate, b) comparing the determined moisture content (HM) to a predefined moisture level (HD), c) storing only the organic substrate of which the moisture content (HM) determined in step a) corresponds to the predefined moisture content (HD), d) when a fermentable potential cannot be determined based on the moisture content (HM) alone during steps a) and c), taking measurements of the methanogenic potential of the biomass, e) comparing the measurements of the methanogenic potential of the biomass obtained during step c) to that of step a), and f) adapting the storage conditions to keep the moisture content (HM) of the organic substrate collected at a value that of the predefined moisture content (HD).

In a method for treating waste, in particular domestic waste, comprising the providing of a closed building for receiving the waste, the roof of the building being designed as a semi-permeable membrane, the filling of the building with the waste, the waste being piled into a mound, the performing of a biological drying of the waste with the supply of air, the air exhaust taking place through the semi-permeable membrane, and the discharging of the dried waste from the building, the filling of the building and the performing of the biological drying, and optionally discharging, of the waste are carried out with an unchanged arrangement of the roof, and the filling of the building is carried out by dropping the waste from a continuous conveying device.

The invention relates to a waste treatment method in which waste is subjected to a first screening process (4). The fraction of waste passing through the screening is subjected to a pre-fermentation treatment in a rotating tube (1) and the material leaving the pre-fermentation treatment tube is subjected to mixing in a mixing hopper, and, subsequently, to a methanization treatment in a digester (2). The organic materials are separated from the undesirable products in the material leaving the pre-fermentation treatment tube before it enters the digester. The digester (2) is horizontal and mechanically stirred, and a fraction of the digestate leaving the digester is recirculated at least in the mixing hopper, the recirculation rate being sufficiently high to ensure complete mixing.

The invention relates to a waste treatment method in which waste is subjected to a first screening process (4). The fraction of waste passing through the screening is subjected to a pre-fermentation treatment in a rotating tube (1) and the material leaving the pre-fermentation treatment tube is subjected to mixing in a mixing hopper, and, subsequently, to a methanization treatment in a digester (2). The organic materials are separated from the undesirable products in the material leaving the pre-fermentation treatment tube before it enters the digester. The digester (2) is horizontal and mechanically stirred, and a fraction of the digestate leaving the digester is recirculated at least in the mixing hopper, the recirculation rate being sufficiently high to ensure complete mixing.

[Problem] The present invention seeks to provide a composition for plants that is highly safe and that contributes to early harvesting, increasing yield, and increasing added value of crops. Specifically, the present invention provides a yeast extract that, by addition to a foliar surface spray or to soil or water, provides an effect of promoting growth, an effect of root lengthening, an effect of improved taste, and an effect of increased amino acid content of a plant. A substance obtained from yeast that is edible and considered to be safe is preferred as the yeast extract.

[Means for Solving the Problem] A yeast extract having a peptide content of 5 wt % or more and an RNA content of 5 wt % or more is sprayed onto or provided as fertilizer to a plant. The yeast extract is preferably derived from Candida utilis, which is edible and considered to be safe.