The principle of the solid-liquid separator is as follows: the water level detector senses the high water level, the equipment starts, the submersible pump pumps the sewage into the separator, the solid liquid is separated through the inclined screen, the solid separation enters the spiral conveying dragon for extrusion dehydration and then falls through the discharge port; The water level detector senses low water level, the submersible pump stops running, and so on.

The cow manure is pumped from the sewage collection tank to the spiral extrusion separator. After solid-liquid separation, the raw cow manure with a water content of 70~75% is obtained. After entering the pad regeneration system, the raw cow manure is separated twice to obtain the cow manure with a water content of 55~60%, which is then transported into the roller bin for natural fermentation and high temperature sterilization. The fermentation stage is usually 8-20 hours, and the temperature in the tank is maintained at 55-75 ℃. No bacteria need to be added. The temperature sensor is used to monitor, and the ventilation can be adjusted. The time of high temperature sterilization stage is 1-2 hours, and the sterilization temperature is 80~85℃. The heat sources in this stage are divided into electric energy (from January to April, about 750kW per day) and biogas energy (from May to December, about 2000m³ per day) due to the seasons. The heat is converted into hot air source for high temperature sterilization of materials. The production process of recycled bedding material lasts for 20~22 hours, and the moisture content of the material produced after treatment is less than 50%, which can effectively reduce or kill harmful bacteria such as mold and staphylococcus aureus, so as to obtain recycled cow mattress material.

Intelligent high temperature aerobic fermentation system adopts high temperature aerobic fermentation process, relying on Japan's intelligent aerobic fermenter technology, to carry out high temperature aerobic fermentation of solid organic waste, using microorganisms to decompose the organic matter in the waste, so that it can achieve harmless, reduction, resource utilization of integrated treatment equipment. It has four intelligent modules: intelligent double aeration system, temperature control system, intelligent Internet of Things control system and biological deodorization system. It has the characteristics of high fermentation rate, high degree of automation, small footprint, low energy consumption and easy operation. The principle of high temperature biological fermentation technology is adopted, and the equipment is used to provide a suitable high temperature environment for microorganisms to realize the inactivation of pathogens. At the same time, the organic perishable garbage can be degraded within 24 hours by using protease, lipase, cellulase and other enzymes synthesized by microorganisms themselves to degrade organic matter. Equipment comprehensive fermentation, sterilization, drying and other synchronous links, can quickly degrade the organic perishable waste into organic fertilizer raw materials. The whole equipment is constructed of corrosion-resistant stainless steel material, and mechanical stirring is adopted in the degradation box. The device has well-sealed entrances to reduce energy consumption. Equipment requires electrical connection, no odor and no effluent discharge.

The air filter of breeding farm is mainly used for fresh air filtration of breeding house. It can effectively prevent mosquitoes, pollen, dust and germs from spreading into the house through the air through three-layer filtration of three anti net, initial effect net and sub-high efficiency net. The filtration efficiency can reach MERV15 level. The equipment is modular design, simple structure, convenient installation and transportation, with high filtration efficiency, small filter gap and large pass. Suitable for front end air filtration of chicken, pig and other high-efficiency breeding farms.

National Biological Natural Gas Project Equipment specifications 1.Specification of Gas holder: φ31.32×6.88m(h)×8unit, single volume：2580m3 2.Construction Time: 2021

China Resources Group(Wuchang) Lalin village biogas CHP project Equipment specifications 1.Specification of Gas holder: φ28.81×9.03m(h)×4unit, single volume：3500m3 2.Construction Time: 2020-2021

China Resources Group Yilan Dalianhe biogas CHP project Equipment specifications 1.Specification of Gas holder: φ28×6.45m(h)×8unit, single volume：2100m3 2.Construction Time: 2019

Meikeduo Foods Group Co., Ltd. Biogas Project Equipment specifications 1.Specification of landing Gas holder: φ15.45×13.5m(h)×2unit, single volume：2500m3 2.Construction Time: 2018 3. Specification of tank top Gas holder: φ29.03×5.49m(h)×3unit, single volume：1901m3 4.Construction Time: 2020-2021