Method for flotation treatment of oily wastewater without medicament

A treatment method and wastewater technology, applied in flotation water/sewage treatment, separation method, grease/oily substance/floating matter removal device, etc., can solve problems such as inability to incinerate and reuse, secondary pollution of the environment, and land occupation
CN1565983AInactive Publication Date: 2005-01-19ηŽ‹ε…‹ζ˜₯ +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
ηŽ‹ε…‹ζ˜₯
Publication Date
2005-01-19
Estimated Expiration
Not applicable Β· inactive patent
Patent Text Reader

Abstract

The invention discloses a method for flotation treatment of oily wastewater without medicament which comprises, pressurizing the oily wastewater to be treated, injecting compressed gas simultaneously, mixing gas-liquid sufficiently through a mixing machine, proceeding time-delay pressure maintaining, and entering floatation machine for pressure reduction release segregation.
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Description

(1) Technical field

[0001] The invention relates to a method for treating oily waste water by flotation without adding medicine in environmental protection engineering. (2) Background technology

[0002] Oily wastewater contains a certain amount of free oil and emulsified oil. The existing treatment method is to add chemicals (demulsifiers, flocculants) to make the oil stains form flocs and separate them from the water body. Occupation will occur during the treatment process. The oily waste residue with water of 1% of the wastewater volume is mainly composed of water, oil and drug-containing flocs. This oily waste residue cannot be incinerated and reused because it contains chemicals. It is mainly disposed of by stacking or burying, occupying land and affecting vegetation. , causing secondary pollution to the environment. (3) Contents of the invention

[0003] The object of the present invention is to provide a method for treating oily wastewater that can greatly reduce t...

Claims

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