A system for treating excrement of livestock includes: reduced-pressure fermentation drying equipment configured to store excrement of livestock in an airtight container, heat and stir the excrement of livestock under reduced pressure so that a temperature of the excrement of livestock is within a predetermined temperature range, decompose organic components of organic matter using microorganisms, and obtain volume-reduced dried product; and heat source equipment that is provided on a downstream side of the reduced-pressure fermentation drying equipment and generates a heat source by combusting the obtained volume-reduced dried product.

A system for treating excrement of livestock includes: reduced-pressure fermentation drying equipment configured to store excrement of livestock in an airtight container, heat and stir the excrement of livestock under reduced pressure so that a temperature of the excrement of livestock is within a predetermined temperature range, decompose organic components of organic matter using microorganisms, and obtain volume-reduced dried product; and heat source equipment that is provided on a downstream side of the reduced-pressure fermentation drying equipment and generates a heat source by combusting the obtained volume-reduced dried product.

The present disclosure provides a solid waste treatment method, including following steps: screening off masses having a particle size greater than 0.5 cm from solid waste; adding extraction agents to the solid waste and then heating and stirring so that the solid waste is fully dispersed in the extraction agents; placing the mixed extraction agent in a centrifuge and centrifuging the mixed extraction; feeding liquid phase separated by centrifuging into a rectification tower for rectification and cooling, recovering residual oil substances in a rectification kettle, separating mixture of cooled extraction agents and water, continuously adding the separated extraction agents into an extraction kettle for cyclic extraction, and conveying sewage to a sewage treatment plant to treat and discharging the sewage after the sewage reaches a treatment standard.

Provided are a bacterium having a 16S rRNA gene comprising a nucleotide sequence having 98.2% or more identity to the nucleotide sequence represented by SEQ ID NO: 1, and having an ability to degrade a target microorganism, a microbial preparation for degrading a target microorganism, comprising a bacterium (a1), and a method for degrading a target microorganism and a device for degrading a target microorganism using the same. Bacterium (a1) is a bacterium having a 16S rRNA gene comprising a nucleotide sequence having 90% or more identity to the nucleotide sequence represented by SEQ ID NO: 1, and having an ability to degrade a target microorganism.

Provided are a bacterium having a 16S rRNA gene comprising a nucleotide sequence having 98.2% or more identity to the nucleotide sequence represented by SEQ ID NO: 1, and having an ability to degrade a target microorganism, a microbial preparation for degrading a target microorganism, comprising a bacterium (a1), and a method for degrading a target microorganism and a device for degrading a target microorganism using the same. Bacterium (a1) is a bacterium having a 16S rRNA gene comprising a nucleotide sequence having 90% or more identity to the nucleotide sequence represented by SEQ ID NO: 1, and having an ability to degrade a target microorganism.

A method for treating wastewater or sludge comprises the steps of adding the wastewater or sludge to a reactor and mixing the wastewater or sludge with a stream to thereby decrease a ratio of alkalinity to ammonium in the reactor, the reactor containing ammonium oxidising bacteria that oxidise ammonium to produce nitrite and decrease pH.

Disclosed are a cow excreta treatment apparatus and method. According to an aspect of the present embodiment, in a cow excreta treatment apparatus which treats cow excreta wastewater, provided is an aerobic reaction chamber for improving the aggregation and sedimentation characteristics of fine solids, the aerobic reaction chamber comprising: an air blow pipe for supplying air; a vertical membrane for preventing the outflow of raw water; and a discharge pipe for discharging air and treated water and removing bubbles generated in the aerobic reaction chamber.

Disclosed are a cow excreta treatment apparatus and method. According to an aspect of the present embodiment, in a cow excreta treatment apparatus which treats cow excreta wastewater, provided is an aerobic reaction chamber for improving the aggregation and sedimentation characteristics of fine solids, the aerobic reaction chamber comprising: an air blow pipe for supplying air; a vertical membrane for preventing the outflow of raw water; and a discharge pipe for discharging air and treated water and removing bubbles generated in the aerobic reaction chamber.

A positive polymer fecal sludge treatment apparatus comprising a trash separator, one end of which is connected with a sludge inlet, and the other end of which is connected with a twin-rotor vacuum water pump. A high-pressure transparent tube is disposed and connected, by a knife valve, between the trash separator and the twin-rotor vacuum water pump. One end of the knife valve is connected with a first material box and a second material box. A first chemical box and a second chemical box are disposed under the first material box and the second material box, and each of the first material box and the second material box is connected with the first chemical box and the second chemical box. The first and second material boxes have a larger volume than a conventional one and thus can store more material and also can perform chemical stirring reaction directly.

A positive polymer fecal sludge treatment apparatus comprising a trash separator, one end of which is connected with a sludge inlet, and the other end of which is connected with a twin-rotor vacuum water pump. A high-pressure transparent tube is disposed and connected, by a knife valve, between the trash separator and the twin-rotor vacuum water pump. One end of the knife valve is connected with a first material box and a second material box. A first chemical box and a second chemical box are disposed under the first material box and the second material box, and each of the first material box and the second material box is connected with the first chemical box and the second chemical box. The first and second material boxes have a larger volume than a conventional one and thus can store more material and also can perform chemical stirring reaction directly.