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

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...

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 standards, some sensitive areas even require surface water environmental quality standards. The existing methods are difficult to respond to on-site emergencies Disposal conditions to meet emission standards

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