Waste water treatment method and equipment being able to treat h

Details Waste water treatment method and equipment being able to treat h Waste water treatment method and equipment being able to treat h

1998-08-10

2000-05-16

Upton, Christopher

Liquid purification or separation

Processes

Treatment by living organism

210617, 210630, 210631, C02F 330

Patent

active

060632798

ABSTRACT:
In a third tank, calcium carbonate mineral is filled to react with fluorine in treatment water. Then, generated treatment water containing calcium fluoride is aerated and stirred so that aerobic microorganisms are propagated, by which organic matters are treated. A fourth water tank is to perform treatment of hydrogen peroxide by anaerobic microorganisms in return sludge from a sixth tank, treatment of phosphorus by slaked lime newly added in a small amount, and secondary treatment (advanced treatment) of fluorine that has already been primarily treated in the third tank. In a fifth tank, flocs are coagulated. In the sixth tank, the coagulants are settled and separated so as to be discharged as treated water. Thus, mixed waste water of hydrogen-peroxide- and phosphorus-containing fluorine waste water and organic-matter-containing waste water is treated simultaneously with low running cost and maintenance cost.

REFERENCES:
patent: 4659471 (1987-04-01), Molin et al.
patent: 4663043 (1987-05-01), Molin et al.
patent: 5580458 (1996-12-01), Yamasaki et al.
patent: 5707514 (1998-01-01), Yamasaki et al.
patent: 5849194 (1998-12-01), Yamasaki et al.
patent: 5895576 (1999-04-01), Yamasaki et al.

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