Hydrodynamic cavitation device for treatment of domestic sewage

Abstract

The invention provides a hydrodynamic cavitation device for treatment of domestic sewage. The hydrodynamic cavitation device comprises a rotary shaft and a stator. A cavitation cavity is formed in thestator, a blind hole is formed in the inner wall of the cavitation cavity, and a water inflow pipe and a water outflow pipe are arranged on the stator. The rotary shaft is mounted in the stator, oneend of the rotary shaft stretches out of the stator, the stretching end is connected with a transmission device, a rotor is arranged on the rotary shaft, the rotor is located in the cavitation cavityof the stator, and a blind hole is distributed in the rotor. The domestic sewage is input in the stator cavitation cavity of the device through a water pump, sufficient cavitation bubbles are generated in the device through mechanical rotation, the cavitation bubbles instantly collapse to form microjet and shock waves, instant local high temperature and instant high pressure are generated, cavitation is more violent, the cavitation efficiency is improved, macromolecules difficult to treat in the sewage are degraded into micromolecules easily decomposed relatively, and the cavitation jet generated by the hydrodynamic cavitation device has a purification effect on the domestic sewage. The hydrodynamic cavitation device is high in treatment efficiency and good in effect, and the following treatment efficiency can be improved.

Description

technical field [0001] The invention relates to a device for purifying domestic sewage through hydraulic cavitation, belonging to the technical field of sewage treatment. Background technique [0002] Generally, the degree of sewage treatment and the corresponding treatment process are determined according to the utilization or discharge of urban sewage and the natural purification capacity of the water body. Whether the treated sewage is used for industry, agriculture or recharge to replenish groundwater, it must meet the relevant water quality standards issued by the state. [0003] Sewage treatment can be divided into primary, secondary and tertiary treatment processes according to the degree of treatment. Primary sewage treatment applies physical methods, such as sieving, sedimentation, etc., to remove undissolved suspended solids and floating substances in sewage. The secondary treatment of sewage is mainly the application of biological treatment methods, that is, the...

AI Technical Summary

Problems solved by technology

The tertiary treatment is advanced treatment, the effluent water quality is good, even can meet the drinking water quality standard, but the treatment cost is high

[0006] There are many macromolecular substances in domestic sewage that are difficult to degrade and treat. The existing hydraulic cavitation technology is directly used for domestic sewage treatment, which has the disadvantages of low efficiency and poor effect.

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