Treatment technology of emulsion contained spent water

A treatment process and emulsion technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve problems such as difficult to effectively remove, large floor space, and large equipment investment , to achieve the effect of simple operation, small equipment footprint and low investment

Inactive Publication Date: 2004-12-22
马晓鸥 +4
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Problems solved by technology

However, the membrane filtration method and the ozone synergistic salt effect demulsification method require a large investment in equipment for treating waste emulsion, which has certain limitations; demulsification by methods such as salting out, acidification, coagulation, and electrolyte demulsification can only solve the problem of emulsion demulsification. The problem of oil-water stratification makes it difficult to effectively remove other organic and inorganic pollutants in the water, and further treatment is still required by aerobic biochemical and adsorption methods, and the device occupies a large area, high treatment costs, and large equipment investment

Method used

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  • Treatment technology of emulsion contained spent water

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Embodiment Construction

[0040] Take a plant that treats 100 tons of emulsion wastewater per day as an example:

[0041] (1). The emulsion-containing waste water generated during the operation of the machine is used in the grease trap to remove the machine oil in a suspended state by the oil collection device. The oil-collecting device relies on an oil-friendly and hydrophobic ring-shaped oil-collecting drag, which is mechanically driven to continuously rotate on the oil-water surface at a certain speed to adhere the oil from the oily sewage, and squeeze the oil through the squeeze roller. Squeeze into the oil collection drum;

[0042] (2). After removing the oil slick, the wastewater enters the anaerobic tank and stays for 12 to 24 hours. Under the action of anaerobic microorganisms, the organic matter is digested and degraded, and the emulsifier is destroyed or partially destroyed and decomposed;

[0043] (3). After anaerobic digestion, the wastewater enters the oxidation reaction tank. First add l...

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Abstract

A process for treating the sewage containing emulsion includes such steps as removing the floated oil, anaerobic digestion, chemical oxidizing, coagulating, air floating and sand filtering.

Description

technical field [0001] The invention relates to a wastewater treatment process, in particular to a process for treating emulsion-containing wastewater in machinery manufacturing and other industries. Background technique [0002] In industries such as metal material processing and machinery manufacturing, emulsions are usually used as coolants or lubricants. After the emulsion is recycled many times, it will deteriorate and fail to become waste emulsion. This type of wastewater has a high degree of emulsification, and its main components are machine oil, surfactants, soluble organic matter and suspended solids, etc. It is milky white. Although the amount of water is not large, the indicators such as COD and oil are high. [0003] Since oil substances are hydrophobic and have a density less than 1, if there is no emulsifier in the water, the dispersed oil droplets will gather into large oil droplets and float due to agglomeration. But in the presence of emulsifiers, oil, wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/02C02F9/14
Inventor 马晓鸥董宏宇康思琦尹庚明
Owner 马晓鸥
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