A method of treating sewage by using a coagulation air flotation machine

Abstract

The invention provides a method for treating sewage by using a coagulation air flotation machine, which includes the following processing steps: introducing the filtered and flocculated sewage into the coagulation air flotation machine, adding a coagulant; the motor of the coagulation air flotation machine passes through the rotating shaft Drive the blades to work and rotate, prompting the coagulant to mix and react with the impurities in the sewage to form flocs; the ultrasonic transmitter will cavitate the air entering the coagulation air flotation machine through the intake pipe to generate fine bubbles; the fine bubbles float up, and during the floatation process Adhere to and take away the flocs; the flocs float to the water surface with the micro-bubbles and form scum, which is removed, and the water treated with the micro-bubbles is discharged from the outlet at the bottom of the coagulation air flotation machine. The sewage treatment method of the present invention is simple and low in cost, can effectively remove impurities such as suspended particles, emulsified oil, fibers, and heavy metals in sewage, is environmentally friendly and pollution-free, and has broad market application value.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a method for treating sewage by using a coagulation air flotation machine. Background technique [0002] With the influx of a large number of rural population into cities in my country, the urban population continues to increase, and the urban water resources have been severely damaged, and my country is facing the problem of water resource depletion. Water resources are the guarantee for human survival. It is a non-renewable resource. It not only affects people's production and life, but also has an important impact on my country's national conditions and national movement. It can be seen that it is urgent to strengthen my country's urban sewage treatment work. [0003] Urban sewage is mainly domestic sewage, industrial waste water, etc. discharged from the city. These waste water is mainly collected through the city's sewage pipe network or discharged into the water body after ...

AI Technical Summary

Problems solved by technology

However, the process of urbanization in our country has caused serious problems of water resource pollution, which is contrary to the principle of sustainable development that our country has always advocated. Our country must find ways to solve the problem of urban water pollution

[0005] On the other hand, during the treatment process of the sewage treatment plant, the sewage first flows into the coarse grid, and after the larger floating debris is removed through the coarse grid, then the sewage is removed through the fine grid to remove the fine floating debris, and then in the swirling flow. The sediment is removed in the grit chamber, and the sediment deposited at the bottom of the grit chamber is discharged into the sludge storage tank through the sand suction machine; the sewage after sand removal enters the coagulation sedimentation tank of the back-end treatment facilities and equipment, such as the coagulation sedimentation tank It mainly removes suspended solid particles in sewage, and the floc particles formed by coagulation are small, light in weight and poor in sedimentation performance. This sewage treatment has brought great challenges

Images