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|1. (WO2018201304) WASTEWATER TREATMENT SYSTEM AND METHOD FOR EFFECTIVE VOLUME REDUCTION OF ORGANIC SLUDGE|
|Applicants:||DONGGUAN YUANKONG ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD.
|Title:||WASTEWATER TREATMENT SYSTEM AND METHOD FOR EFFECTIVE VOLUME REDUCTION OF ORGANIC SLUDGE|
A wastewater treatment system for effective volume reduction of organic sludge. The system comprises a bar screen, a sedimentation tank, a bio-reaction tank, and a sludge thickening tank. A hydrodynamic cavitation sludge minimization machine is connected in series between an outlet end of the sludge thickening tank and a feed of the bio-reaction tank to form a wastewater circulation system. The hydrodynamic sludge minimization machine comprises at least two stages of cavitation devices connected in series. A first-stage cavitation device (100) comprises a first cavitator (103) placed in a first-stage cavitation cavity (101) and a pulverization barrier plate (102) facing an outlet of the first cavitator (103). A second-stage cavitation device (20) comprises a second cavitator (21), a jet confining member (25), and a second-stage diffuser pipe (26) connected in sequence. The jet confining member (25) is located within an air dissolving cavity (23). The air dissolving cavity (23) is provided with an air dissolving adjustment mechanism. Also disclosed is a sludge minimization method.