The role of valves in wastewater treatment processes in Nepal

First, the role of the valve in the sewage treatment process

The valve is an indispensable part of the sewage treatment system, mainly used to control the flow and direction of sewage in the pipeline. The role of the valve can be summarized as follows:

1, adjust and control the flow of sewage: the valve can adjust the flow size of sewage, to avoid too large or too small flow on the sewage treatment system has an adverse effect.

2, control the flow of sewage: the valve can control the flow of sewage to ensure that the sewage flows along the design direction during the treatment process.

3, prevent sewage backflow: the valve can prevent sewage backflow, ensure that the sewage only flows to the specified direction, to avoid water quality is affected.

4, adjust the pressure: the valve can adjust the pressure of the pipeline by adjusting the flow of sewage, keep the pressure stable.

5, sewage diversion: the valve can divert sewage to different treatment equipment, play a reasonable distribution of sewage treatment load.

Second, common valve types

1, check valve: used to prevent sewage flow back when the sewage flow is reversed;

2, stop valve: used to control the flow of sewage;

3, regulating valve: used to adjust the flow and pressure of sewage;

4, safety valve: the pressure of the control system does not exceed the set value;

5, ball valve: used to control large flow of sewage;

6, butterfly valve: used to control small flow of sewage.

Third, the application of valves in sewage treatment process examples

1, sludge thickening system: In order to control the amount of sludge filter press in and out, sludge thickening system is usually equipped with regulating valves and safety valves;

2, aeration system: aeration system needs to adjust the amount of oxygen according to the demand for oxygen, usually installed regulating valves and flowmeters;

3, disinfection system: In order to ensure the disinfection effect, the disinfection system will be installed in the stop valve, check valve and regulating valve to control the flow of sewage, flow and pressure.

The valve plays an important role in the sewage treatment process, which can not only control the flow rate and direction of the sewage, but also adjust the pressure and divide the sewage to ensure the efficient operation of the entire sewage treatment system. In the process of design and operation of sewage treatment system, choosing the right valve equipment is crucial to ensure the operation efficiency and safety of sewage treatment system.