To produce fertilizer, a system and method concentrates manure slurry in a mechanical vapor recompression evaporator (MVR) having a heat exchanger. The MVR receives the manure slurry within a first side to evaporate ammonia laden-water vapor from the slurry, leaving a nutrient concentrate. A compressor raises the evaporated ammonia-laden water vapor to a higher energy state. Within a second side of the heat exchanger, the compressed water vapor conveys heat to the slurry. Ammonia-laden water condenses in the second side at a process temperature to be conveyed to an ammonia stripping tower where the ammonia-laden water is dispersed into ammonia-laden water droplets. In the tower, a flow of air is directed across a surface of the ammonia-laden water droplets, the process temperature having been selected to promote the escape of ammonia gas from the ammonia-laden water droplets, the flow of air provided to entrain ammonia gas in the flow.

To produce fertilizer, a system and method concentrates manure slurry in a mechanical vapor recompression evaporator (MVR) having a heat exchanger. The MVR receives the manure slurry within a first side to evaporate ammonia laden-water vapor from the slurry, leaving a nutrient concentrate. A compressor raises the evaporated ammonia-laden water vapor to a higher energy state. Within a second side of the heat exchanger, the compressed water vapor conveys heat to the slurry. Ammonia-laden water condenses in the second side at a process temperature to be conveyed to an ammonia stripping tower where the ammonia-laden water is dispersed into ammonia-laden water droplets. In the tower, a flow of air is directed across a surface of the ammonia-laden water droplets, the process temperature having been selected to promote the escape of ammonia gas from the ammonia-laden water droplets, the flow of air provided to entrain ammonia gas in the flow.

The present application provides a reactor with an inclined bottom gas-inlet for aerobic fermentation. A fermenter is provided with a circular inner tank, end covers and a jacket. An airtight fermentation space is formed in the fermenter by the inner tank, an upper end cover and a lower end cover. A feed opening and an exhaust outlet are arranged at an upper part of the fermenter, and a discharge opening is arranged at a lower part of the lower end cover of the fermenter. An energy-saving stirrer is mounted in the fermenter. A plurality of air chambers are arranged at an external wall at the bottom of the inner tank of the fermenter and are within the jacket. A plurality of aeration nozzles are defined on an inner side of each air chamber, and the aeration nozzles are disposed next to the inner tank.

The present application provides a reactor with an inclined bottom gas-inlet for aerobic fermentation. A fermenter is provided with a circular inner tank, end covers and a jacket. An airtight fermentation space is formed in the fermenter by the inner tank, an upper end cover and a lower end cover. A feed opening and an exhaust outlet are arranged at an upper part of the fermenter, and a discharge opening is arranged at a lower part of the lower end cover of the fermenter. An energy-saving stirrer is mounted in the fermenter. A plurality of air chambers are arranged at an external wall at the bottom of the inner tank of the fermenter and are within the jacket. A plurality of aeration nozzles are defined on an inner side of each air chamber, and the aeration nozzles are disposed next to the inner tank.

Embodiments of this invention provide an apparatus that allows for the biodegrading of materials including food waste, food service paper products, wet waste, paper cardboard, landscape waste, and other organic solids using a prefabricated, multi-modal, portable, modular system that includes a series of bio-mimicry vessels in multiple mode deployment.

A method for the biological treatment of organic waste containing impurities consisting of non-biodegradable materials, including: a first step of wet mechanical separation of the non-biodegradable materials present in the abovementioned organic waste in order to obtain a purified organic fraction, a second step of dehydrating the purified organic fraction in order to obtain a dehydrated purified organic fraction and an effluent, a third step of dry anaerobic biological treatment of the dehydrated organic fraction in order to obtain organic residues.

The present invention relates to a method for the treatment of organic matter, in particular sewage sludge, where the organic matter is first fed to a disintegration system. The organic matter is then subjected to thermal hydrolysis in the disintegration system to form disintegrated matter. The disintegrated matter is fed to a digester in which the disintegrated matter is at least partially digested such that digested sludge is formed, where at least part of the digested sludge obtained is recirculated via a recirculation line to a point upstream of the disintegration system. The invention further relates to a device for the treatment of organic matter, in particular sewage sludge, comprising a disintegration system, a digester downstream thereof, and a recirculation line for at least partially digested disintegrated matter, said recirculation line extending from a point downstream of the digester to a point upstream of the thermal disintegration system.

Methods for increasing growth rate of livestock. Methods for increasing survival rate of livestock. Methods for decreasing hydrogen sulfide concentration in an environment containing manure. Methods for decreasing odor concentration in an environment containing manure. Methods for decreasing ammonia concentration in an environment containing manure. Compositions for decreasing noxious gases in an environment containing manure.

The present invention provides a special fertilizer for cut side slope soil remediation in high altitude areas, which is prepared by effectively compounding raw material components of a yak manure-containing compost, an organic micro multi-element fertilizer, a chemical fertilizer, attapulgite powder and sodium alginate under certain conditions. The special fertilizer has obvious effects on the aspects of improving the physicochemical properties of artificial soil at cut side slope wounds in the high altitude areas, increasing the fertilizer efficiency and promoting vegetation restoration.

The invention concerns a method for treating a mixture of wastes (4) comprising biodegradable wastes, the method being characterized in that it includes the following successive steps: Step A: the mixture of wastes (4) is subjected to a first composting cycle so as to obtain a mixture of pre-composted wastes (4), Step B: the mixture of pre-composted wastes (4) is subjected to a drying so as to obtain a mixture of dried wastes (4), Step C: the mixture of dried wastes (4) is separated into at least a portion of heavy wastes (14) and a portion of light wastes (13), Step D: the portion of light wastes (13) is subjected to a second composting cycle to so as to obtain a mixture (4) of refined wastes (20). Treatment of biodegradable wastes.