CN1565983A - Method for flotation treatment of oily wastewater without medicament - Google Patents
Method for flotation treatment of oily wastewater without medicament Download PDFInfo
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- CN1565983A CN1565983A CN 03124556 CN03124556A CN1565983A CN 1565983 A CN1565983 A CN 1565983A CN 03124556 CN03124556 CN 03124556 CN 03124556 A CN03124556 A CN 03124556A CN 1565983 A CN1565983 A CN 1565983A
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- water
- oily
- waste
- medicament
- oily wastewater
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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.
Description
(1) technical field
The present invention relates to a kind of treatment process of oily(waste)water being implemented not dosing flotation in the environmental engineering.
(2) background technology
Oily(waste)water contains a certain amount of free oil and oil in water emulsion, existing treatment process is that adding medicament (emulsion splitter, flocculation agent) makes greasy dirt form flocs unit, and it is separated from water body, can produce the band water oily waste kesiduum account for wastewater flow rate 1% in the treating processes, its major ingredient is water, oil and pastille throw out, this oily waste kesiduum, because of containing medicament, can't burning and reuse, mainly adopt stacking or bury processing, land occupation influences vegetation, and environment is caused secondary pollution.
(3) summary of the invention
Purpose of the present invention is will provide a kind of can greatly reduce the waste residue quantum of output, and makes the recyclable utilization of waste residue, to eliminate the method that environment is caused the processing oily(waste)water of secondary pollution.Invention is to realize like this, with pending oily(waste)water pressurization, inject pressurized gas simultaneously, adding medicine not, make the abundant mixing of gas-liquid by evenly mixing device, the line delay pressurize of going forward side by side, formation is discharged separation by the dissolved air water of the satisfied homogeneous phase solution of gas by the flotation machine decompression, because in the gas-liquid blending process, intermolecular generation sharp impacts and friction, make the part microbubble have electric charge, this Ionized bubble can attract the oil in water emulsion of considerable part strongly, makes it to form bigger oil droplet and floats and struck off to liquid level, play the separating effect close with the dosing flotation, water body oil-containing after the processing can be dropped to by 200mg/l＜30mg/l, because adding medicine not, dregs of fat amount can reduce about 90%, for follow-up biochemistry or filtration treatment create favorable conditions, a small amount of dregs of fat major ingredient that is produced is a water, oil content and suspended substance etc.Because of not containing medicament, be convenient to recycle or the processing that acts as a fuel, not only saved cost for wastewater treatment, also solved the pastille dregs of fat to the secondary pollution that environment causes, have tangible environment, society and economy benefit.
(4) embodiment
Oily(waste)water is pumped to 0.4Mpa, before entering evenly mixing device, injects pressurized gas (air, nitrogen or petroleum gas), air pressure is greater than hydraulic pressure, and tolerance is about 1% of the water yield, behind the abundant mixing of gas-liquid, by time-delay pressurize jar, make it to form the homogeneous phase solution under the saturated dissolved gas state.By flotation machine decompression release pulp water is separated again, the dregs of fat in the water body are wrapped up in by micro bubble and are floated to liquid level in the holder, and in slag scraper struck off and collect the collection slag ladle, the water after the processing entered follow-up processing flow, and slag is transported to recovery system or makes fuel treatment.
Claims (2)
1. the method for a not dosing flotation processing oily(waste)water, the technical scheme of its processing are, with pending oily(waste)water pressurization, and inject pressurized gas, by mixing, time-delay pressurize, make it to form the homogeneous phase solution under the saturated dissolved gas state, discharge, make pulp water to separate by the flotation machine decompression again
2. the described treatment process of claim 1 need not add medicament when it is characterized in that handling oily(waste)water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03124556 CN1565983A (en) | 2003-06-17 | 2003-06-17 | Method for flotation treatment of oily wastewater without medicament |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03124556 CN1565983A (en) | 2003-06-17 | 2003-06-17 | Method for flotation treatment of oily wastewater without medicament |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1565983A true CN1565983A (en) | 2005-01-19 |
Family
ID=34468989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03124556 Pending CN1565983A (en) | 2003-06-17 | 2003-06-17 | Method for flotation treatment of oily wastewater without medicament |
Country Status (1)
| Country | Link |
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| CN (1) | CN1565983A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101863562A (en) * | 2010-05-28 | 2010-10-20 | 胜利油田胜利勘察设计研究院有限公司 | Method and device for treating polymer-containing sewage by using high-gradient agglomerated air floatation |
| CN107986389A (en) * | 2017-11-29 | 2018-05-04 | 廊坊新奥龙河环保科技有限公司 | A kind of oil-containing danger waste liquor treatment equipment |
-
2003
- 2003-06-17 CN CN 03124556 patent/CN1565983A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101863562A (en) * | 2010-05-28 | 2010-10-20 | 胜利油田胜利勘察设计研究院有限公司 | Method and device for treating polymer-containing sewage by using high-gradient agglomerated air floatation |
| CN107986389A (en) * | 2017-11-29 | 2018-05-04 | 廊坊新奥龙河环保科技有限公司 | A kind of oil-containing danger waste liquor treatment equipment |
| CN107986389B (en) * | 2017-11-29 | 2024-03-15 | 廊坊新奥龙河环保科技有限公司 | Oily hazardous waste liquid treatment equipment |
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