Physical treatment technology is a basic method in wastewater treatment, which mainly separates and removes pollutants in wastewater through physical processes. These technologies typically involve solid-liquid separation, filtration, sedimentation, and other processes. Here are some common physical processing techniques and how their equipment operates:
1.*Grille**:
Function**: Remove large pieces of floating debris in wastewater, such as leaves, plastic sheets, paper, etc.
Equipment Operation**: The wastewater is passed through a series of parallel metal strips or screens, intercepting large pieces of material.
2.*Grit Remover Tank**:
Function**: Remove heavy particles such as sand and stones in wastewater.
Equipment operation**: The wastewater is decelerated in the grit tank and the particles settle under the action of gravity.
3.Primary Sedimentation Tank:
Function**: Removal of suspended solids and some organic matter in wastewater.
Equipment operation**: Wastewater stays in the sedimentation tank and suspended solids settle under gravity.
4.*Air Flotation Tank**:
Function**: Removes light particulate matter such as grease, suspended solids and algae from wastewater.
Equipment Operation**: By injecting fine bubbles into the wastewater, particulate matter adheres to the bubbles and floats to the surface of the water, and then removes.
5.*Filter Pool**:
Function**: Removal of fine suspended solids and certain dissolved matter in wastewater.
Equipment operation**: Wastewater passes through filter media such as sand layer and gravel layer, and particulate matter is intercepted.
6.*Centrifugation**:
Function**: Removal of microscopic suspended particles and emulsified oils from wastewater.
Equipment Operation**: Centrifugal force is used to separate particulate matter from water.
7.*Membrane Separation Technology**:
Function**: Remove dissolutes, colloids, bacteria, etc. from wastewater.
Equipment operation**: Wastewater is filtered through a semi-permeable membrane to separate pollutants.
The operation of the equipment of the physical processing technology generally needs to follow the following principles:
Specifications**: Follow the equipment manufacturer's instructions and standard operating procedures.
Scheduled Maintenance**: Regularly inspect and maintain equipment to ensure proper operation and efficient performance.
Monitoring & Adjustment**: Monitor the treatment process and adjust the operating parameters of the equipment according to the changes in the quality and quantity of wastewater.
Safety Management**: Ensure the safety of operators and prevent accidents.
Physical treatment technology is often used as the first step in wastewater treatment, which can significantly reduce suspended solids and certain pollutants in wastewater, and create favorable conditions for subsequent biological or chemical treatment.