Sewage treatment (sewage treatment, wastewater treatment): in order to make the sewage to achieve the drainage of a certain body of water or re-use of the water quality requirements of its purification process. Wastewater treatment is widely used in construction, agriculture, transportation, energy, petrochemicals, environmental protection, cityscape, medical, food and beverage and other fields, but also more and more into the daily life of ordinary people.
1, grille: the main role of the grille is to intercept the suspended solids in the sewage in order to reduce the subsequent water treatment process to reduce the processing load, to protect the role of subsequent equipment. Grid classification is very diverse: arm, high chain, rope, rotary and so on.
2, air-floatation equipment: the main role is to pass into the sewage micro-bubbles, to remove the role of small impurities in the water. Air flotation method can be used for sedimentation method is not applicable to the occasion, in order to separate the specific gravity close to the water and difficult to precipitate suspended matter, such as grease, fibers, algae and so on.
Classification: electrolytic air flotation equipment, bulk air flotation equipment, dissolved air vacuum air flotation equipment, pressurized dissolved air flotation equipment, etc.
3. Aerator: Through the bulk impeller, micro-bubbles are injected into the sewage, and under the action of coagulant and flocculant, suspended flocs are formed with the impurities in the sewage and floated up to form scum.
4, integrated wastewater treatment equipment: including a sedimentation tank, I, II contact oxidation tank, the second sedimentation tank, sludge tank centralized equipment. This is the core part of the sewage treatment equipment.
5, dosing device: mainly solution tank, metering pump, filter, safety valve, check valve, pressure gauge, buffer tank, liquid level meter, control cabinet and other components of the integrated installation on a base.
6, sludge centrifuge: by the drum, screw conveyor, differential, the main bearing, the bottom frame, liquid-solid phase collection chamber, the upper cover, motor drive, frequency converter and other components. The use of rotational speed difference to achieve solid-liquid separation.