Sewage alkalinity control: nitrobacteria normal growth and reproduction of the pH should be controlled between 6.5 to 8.0, biological denitrification generate a lot of bases, and the nitrification process is in need of a base, so often the nitrification and denitrification process before placed, For a typical urban sewage, alkalinity is about 300mg / L (as CaCO3), and alkali nitrification process consumes less than 200mg / L, so for urban sewage, when the use of biological nitrogen removal process does not require supplementary base sources. pH: the role of bacteria can not be separated due to metabolic enzyme activity waste environmental protection equipment, generally considered aerobic reaction stage should be controlled at a pH between 6.5 to 8.0, anaerobic stage suitable pH range of 7.5 to 9.2 between, and the pH value of the sewage is generally between 6.0 to 9.0, so the pH value of the project appropriate. Above picture is for reference only, please consult our detailed models, more models, please visit our official website or call us for sewage treatment equipment pump motor and cooling system: motor pump sewage treatment equipment should be designed with a unique squirrel induction motor, installed in a fully enclosed waterproof motor housing. Motor protection class IP68, insulation class stator windings and into the line of F-class, rated temperature 155 ℃, work for continuous duty motor, the highest at 40 ℃ ambient operating municipal environmental protection equipment to meet the needs of 15 times per hour to start . Sewage treatment equipment pump motors have enough power rating, while the pump is running at any point within its scope of work will not overload the motor. Should be provided with motor performance table, including from 50% to 120% of the load when the load on the motor torque, current, power factor, the input / output power and the motor efficiency, smaller pumps for power, sewage treatment equipment motor cooling action can be met through the heat sink on the stator housing for power above 18kw pump, its motor is required to set a built-in cooling system of environmental protection equipment, cooling medium flow in the cooling chamber surrounding the stator chamber, so that no matter where the pump motor all kinds of conditions of work for the motor cooling system along the radial cooling, in order to ensure that the motor does not overheat burn. Pump sewage treatment equipment metal to metal seal between the static O-ring, or by other types of ring structures to achieve. In the mouth just slotted metal binding by embedding material nitrile 40 or better seal ring. All static sealing ring and the ring material should be suitable for the use of the environment. Sewage treatment equipment seals can not use a rectangular rubber plate, paper or other material gaskets environmental equipment engineering, nor the use of sealants and other secondary seal the sealing surface. Above picture is for reference only, please consult our detailed models, more models, please visit our official website or call us for waste water environmental protection equipment, Ningde environmental equipment, environmental protection provided by Luoyang Luoyang Yu Quan Yu Quan sewage treatment Limited. Luoyang Yu Quan Sewage Treatment Co., Ltd. (www.yuquankj.net) strong, credible, in Luoyang, Henan sewage treatment equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Luoyang Yu Quan into the brilliant green and you work for a better future!