(1) Primary treatment: The discharged wastewater flows through two coarse and fine grids to remove large suspended solids and floating materials to prevent blockage of mechanical equipment such as sewage lifting pumps. Then, it flows into the oil separation sedimentation tank, and the waste water contains sediment, etc., which can be removed by natural sedimentation, and the precipitated sediment is periodically pumped into the sludge concentration tank by the sludge pump. The oil floats on the surface of the water and can be taken out and recycled. Due to the large fluctuation of water quality and quantity of wastewater, to ensure the subsequent treatment effect and operational stability, a regulating tank is set in the treatment process to equalize the water quality and quantity. Ensure that the system runs smoothly. It is also possible to homogenize the acid and alkalinity of the wastewater by adjusting the tank so that the pH of the wastewater satisfies the requirements of the subsequent treatment process. The blood, oil, oil, and the like contained in the wastewater are effectively removed by coagulation and air flotation. (2) Secondary treatment: For the refractory and high concentration of CODCr and BOD5 in the slaughter wastewater, the pretreatment process cannot be completely removed. Therefore, the secondary treatment is biochemical treatment. The design uses hydrolysis acidification-aerobic biological treatment technology. The main purpose of the hydrolysis acidification tank is to decompose the macromolecular organic matter into small molecular organic substances for further removal in the aerobic process. (3) Three-stage treatment: the effluent after aerobic treatment overflows into the sedimentation tank. After the sedimentation, the supernatant water enters the disinfection tank, and the sludge in the sedimentation tank is periodically pumped into the sludge concentration tank by the mud pump. Portable Ultrasound Scanner,Ultrasound Scanner Machine,Portable Ultrasound Machine,Laptop Ultrasound Machine Mianyang United Ultrasound Electronics Co., Ltd , https://www.uniultrasonic.com