Site emergency deep treatment device and technology for oil-containing emulsifying liquid wastewater

A technology for advanced treatment and emulsification, which is applied in multi-stage water treatment, water/sewage treatment, water/sewage multi-stage treatment, etc. It can solve the problems of low treatment efficiency, slow reaction speed and high treatment cost, and achieve high treatment efficiency. , the effect of fast response and low processing cost

Inactive Publication Date: 2017-05-31
SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional oily emulsion wastewater treatment methods have problems such as low treatment efficiency, slow reaction speed, and high treatment costs. At the same time, with the increasingly stringent discharge

Method used

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  • Site emergency deep treatment device and technology for oil-containing emulsifying liquid wastewater
  • Site emergency deep treatment device and technology for oil-containing emulsifying liquid wastewater
  • Site emergency deep treatment device and technology for oil-containing emulsifying liquid wastewater

Examples

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Embodiment

[0049] The on-site emergency advanced treatment device for oily emulsion wastewater is used to treat a certain emulsion wastewater. The disposal scale is 500 cubic meters per day. The quality of the wastewater is shown in the table below. After treatment, it meets the "Environmental Quality Standard for Surface Water" (GB3838-2002) Class III standard limits.

[0050] Table 1 Wastewater Water Quality Status (mg / L)

[0051] index COD Cr

Petro anionic surfactant Volatile phenol Influent concentration 73-216 2-18 0.17 0.25 Emission Standards 20 0.05 0.2 0.005

[0052]Adopting the process described in the present invention, firstly carry out demulsification and primary coagulation and sedimentation treatment on wastewater containing emulsion, then continue to add coagulant for secondary coagulation reaction, then separate sludge from water, precipitate and filter The clear liquid enters the sand filter and carbon filter for further treat...

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PUM

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Abstract

The invention discloses a site emergency deep treatment device and a technology for oil-containing emulsifying liquid wastewater. The treatment device comprises a drug dissolving tank, a primary coagulating tank, stirrers, a primary settling tank, a secondary coagulating tank, a secondary settling tank, a sand filtering tank, a carbon filtering tank, a clean water tank, a sludge concentrating tank and a sludge drying tank, wherein the primary coagulating tank, the primary settling tank, the secondary coagulating tank, the secondary settling tank, the sand filtering tank, the carbon filtering tank and the clean water tank are sequentially connected; the stirrers are arranged in the primary coagulating tank and the secondary coagulating tank. The treatment device has the advantages that the treatment device is used for deeply treating the emulsifying liquid wastewater and the emulsifying liquid-polluted surface water; by adopting the two-stage composite coagulating and settling treatment technology, the removal rates of COD (chemical oxygen demand) and petroleum in the water can reach 95% or above, and the drained water meets the requirements of Class III standards in Environment Quality Standard of Surface Water (GB3838-2002). The technology has the advantages that the quality of drained water is good, the operation is simple and convenient, and the like; the technology is suitable for the deep treatment on the emulsifying liquid wastewater and the site emergency treatment on the emulsifying liquid-polluted surface water.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment in the safety and environmental protection industry, and relates to an environmental sewage treatment technology, in particular to an on-site emergency advanced treatment device and process for oil-containing emulsion wastewater. Background technique [0002] Emulsions are widely used in machining, metal rolling and other industries, as coolants, lubricants or pressure-transmitting media for cutting and grinding of machine parts. After the emulsion is recycled for many times, it will become rancid to varying degrees, its performance will be reduced, and waste emulsion will be formed, which needs to be replaced. In addition to the hazards of general oily wastewater in emulsion wastewater, due to the action of surfactants, mechanical oil is highly dispersed in water, which is easier for animals, plants and aquatic organisms to absorb, and surfactants themselves are harmful to organisms, and...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F11/12
CPCC02F9/00C02F1/001C02F1/283C02F1/5236C02F1/56C02F11/12C02F2001/007C02F2301/08
Inventor 王振兴刘钢邴永鑫叶万生谌建宇虢清伟刘畅
Owner SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP
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