Disclosed is a method for reducing methane emission from slurry produced in a livestock farm. The method comprising the steps of guiding unheated slurry from the livestock farm to a slurry heat exchanger, raising the temperature of the unheated slurry in the slurry heat exchanger to at least 65# Celsius, guiding the at least 65# Celsius hot slurry to an intermediate slurry tank, raising the temperature of the heated slurry to at least 75# Celsius in the intermediate slurry tank, guiding the at least 75# Celsius hot slurry through the slurry heat exchanger to exchange heat with the unheated slurry to raise the temperature of the unheated slurry to the at least 65# Celsius and to cool the at least 75# Celsius hot slurry to at least below 40# Celsius, and guiding the at least below 40# Celsius cold slurry to a slurry reservoir. Furthermore, a slurry treatment plant for reducing methane emission from slurry is disclosed.

A crop-livestock circulation system, including a planting greenhouse, a fish pond and a livestock greenhouse. A rear portion of the livestock greenhouse is provided with a drinking trough. A first side of the livestock greenhouse is provided with a scraper. A portion of a bottom plate close to a second side of the livestock greenhouse is provided with a collection port. A bottom of the collection port is provided with a manure collection trough connected to a fermentation treatment chamber. The fish pond is provided with a sewage discharge port connected to a sewage collection unit. The sewage collection unit is connected to the fermentation treatment chamber. The fermentation treatment chamber is connected to a conveying unit, which is connected to a spraying device. The spraying device is provided in the planting greenhouse.

A crop-livestock circulation system, including a planting greenhouse, a fish pond and a livestock greenhouse. A rear portion of the livestock greenhouse is provided with a drinking trough. A first side of the livestock greenhouse is provided with a scraper. A portion of a bottom plate close to a second side of the livestock greenhouse is provided with a collection port. A bottom of the collection port is provided with a manure collection trough connected to a fermentation treatment chamber. The fish pond is provided with a sewage discharge port connected to a sewage collection unit. The sewage collection unit is connected to the fermentation treatment chamber. The fermentation treatment chamber is connected to a conveying unit, which is connected to a spraying device. The spraying device is provided in the planting greenhouse.

The invention relates to a method of reducing emissions of harmful gases from farm manure during storage of same, the method comprising the steps of acidifying the farm manure and adding a cyanamide salt composition to the farm manure.

The invention relates to a method of reducing emissions of harmful gases from farm manure during storage of same, the method comprising the steps of acidifying the farm manure and adding a cyanamide salt composition to the farm manure.

A biogas collection and purification system that includes a plurality of sources of biogas and a network of conduits configured to convey the biogas from the sources to a central processing facility for processing the biogas into methane. The central processing facility removes impurities to convert biogas to biomethane and may include an H.sub.2S removal stage; an activated carbon scrubber; a gas drier; and a carbon dioxide removal stage. The facility also has a biomethane gas compressor configured to deliver the biomethane for use in power plants, for CNG production. Ancillaries to the system include fuel cells for direct electricity generation from biogas/biomethane.

A biogas collection and purification system that includes a plurality of sources of biogas and a network of conduits configured to convey the biogas from the sources to a central processing facility for processing the biogas into methane. The central processing facility removes impurities to convert biogas to biomethane and may include an H.sub.2S removal stage; an activated carbon scrubber; a gas drier; and a carbon dioxide removal stage. The facility also has a biomethane gas compressor configured to deliver the biomethane for use in power plants, for CNG production. Ancillaries to the system include fuel cells for direct electricity generation from biogas/biomethane.

The present disclosure discloses a moss-covered green manure and an application method in assisting ecological remediation. The moss-covered green manure includes the following parts by weight of raw materials: 30-38 parts of plant fibers, 30-35 parts of moss, 5-8 parts of paclobutrazol, 5-7 parts of a growth regulator, 50-62 parts of humus soil and/or an oil cake, and 35-47 parts of electrolytic water. According to the moss-covered green manure and the application method in assisting ecological remediation provided by the present disclosure, bare soil is covered by arranging cooperative moss-covered green manure in a non-planting area of a remediation plant to ensure the beauty of the appearance. Meanwhile, the soil can also be improved by further utilizing the advantages of preserving moisture and fertility, improving the nitrogen fixing capacity of the soil and not competing with plants for fertilizer of the moss-covered green manure.

The present disclosure discloses a moss-covered green manure and an application method in assisting ecological remediation. The moss-covered green manure includes the following parts by weight of raw materials: 30-38 parts of plant fibers, 30-35 parts of moss, 5-8 parts of paclobutrazol, 5-7 parts of a growth regulator, 50-62 parts of humus soil and/or an oil cake, and 35-47 parts of electrolytic water. According to the moss-covered green manure and the application method in assisting ecological remediation provided by the present disclosure, bare soil is covered by arranging cooperative moss-covered green manure in a non-planting area of a remediation plant to ensure the beauty of the appearance. Meanwhile, the soil can also be improved by further utilizing the advantages of preserving moisture and fertility, improving the nitrogen fixing capacity of the soil and not competing with plants for fertilizer of the moss-covered green manure.