The widely used sewage treatment processes currently include oxidation ditch process and SBR process, among which oxidation ditch process is the most common.
　　With the increasing demand for aeration equipment in the oxidation ditch treatment process and the increasing shortage of energy, the research on new high-efficiency and low energy consumption aeration equipment has become an important factor in promoting the development of oxidation ditch treatment technology and energy conservation and consumption reduction. SEW's K series reduction motor has a wide range of applications in aerators. To ensure sufficient oxygen supply, it is required that the reducer motor runs continuously for 24 hours, exerting the effect of energy conservation and consumption reduction with extremely high efficiency. At the same time, the reducer and motor form an integrated machine to save installation space. The company has prepared corresponding models for different requirements of disc and brush rotation. For corrosive environments, all reduction motors have undergone anti-corrosion treatment. The rapid rotation of the aerator can easily splash sludge and other debris onto the reduction motor, which can cause blockage of the ventilation valve of the reducer over time. Moreover, it is difficult to maintain the reduction motor that is full of sludge. For this purpose, extended ventilation pipes and oil injection pipes have been specially configured for the deceleration motor of the aerator, which not only prevents blockage of the ventilation valve but also facilitates maintenance.
　　Scraper suction sludge machine is a specialized equipment for sludge concentration tank and sedimentation tank, which is divided into two types according to the transmission form: central transmission and peripheral transmission. Technical key: structural design and force calculation of the bridge; Processing of bridges and selection and processing of materials for cross frames and scrapers; Determination of driving power; The arrangement of vertical bars and the arrangement of pool bottom scrapers; Processing of deceleration mechanism; Over torque protection and automatic alarm, parking, and PLC automatic control of the entire machine. Main technical parameters: Outer edge linear speed: 1m/min~2m/min; Motor power: 0.37kW~3.0kW; Pool diameter: 6.0m~55m. In response to the requirement of low speed and high speed ratio for the scraper suction machine, the SEW reduction motor cleverly connects the two-stage reducers together through modular combination, so that the total reduction ratio can reach about 10000. If not observed carefully, it is almost imperceptible that the scraper suction machine is moving. In response to the requirements of over torque protection and automatic alarm, SEW deceleration motors can provide torque limiters to set the limiting torque on the basis of meeting the driving requirements, which can effectively protect the deceleration motor and the scraper suction machine. The combination of SEW torque limiter and control circuit can achieve automatic alarm and power-off protection.