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Treatment technology and equipment for recycling wastewater of surfactant industry

A technology for surfactants and industrial wastewater, applied in multi-stage water treatment, water/sewage treatment, water treatment parameter control, etc., can solve problems such as degradation activity limitation, achieve cost control, reduce personnel burden, and save costs

Inactive Publication Date: 2018-06-01
SHANGHAI FENGXIN ENVIRONMENTAL PROTECTION TECH
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is suitable for wastewater with low concentration. For wastewater with high concentration of surfactant, the degradation activity of these bacteria will be limited to a certain extent

Method used

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  • Treatment technology and equipment for recycling wastewater of surfactant industry

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Embodiment Construction

[0050] Such as figure 1 As shown, the treatment equipment for wastewater reuse in the surfactant industry in this embodiment is sequentially arranged along the direction of waste water flow, waste water tank, stirring tank, primary sedimentation tank, secondary sedimentation tank, pretreatment water tank, sand filter equipment, Sand filter water tank, primary reverse osmosis system, primary water tank, secondary reverse osmosis system, secondary water tank;

[0051]Among them, between the stirring tank and the first settling tank, the first settling tank and the second settling tank, the waste water enters the follow-up equipment through the overflow pipe according to the height difference; the second settling tank also passes through the pipeline and the waste water tank or the stirring tank Connected;

[0052] After the wastewater enters the mixing tank, the dosing box adds PAC, PAM, and pH regulators according to the wastewater conditions, and after full stirring, it over...

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Abstract

The invention provides a treatment technology for recycling wastewater of a surfactant industry. The treatment technology is characterized by comprising the following steps of sequentially carrying out a stirring procedure, a precipitation procedure, a filtering procedure and a reverse osmosis procedure along a wastewater flowing process, wherein in the stirring procedure, a chemical agent is added into the wastewater to carry out pre-treatment; the precipitation procedure comprises at least two grades of precipitation treatment; the reverse osmosis procedure comprises at least two grades of reverse osmosis treatment; output water in the stirring procedure and the precipitation procedure enters a subsequent procedure through a potential difference overflowing manner. According to wastewater treatment equipment and technology, provided by the invention, surfactant wastewater with different concentrations and types can be effectively treated; the treatment cost is low, water resources also can be saved and the wastewater treatment equipment and technology are green and environmentally friendly.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a treatment process and equipment for wastewater reuse in the surfactant industry. Background technique [0002] The main harm of surfactants such as detergents to the water environment is to make the water foam, prevent the air from contacting with the water and reduce the dissolved oxygen, and at the same time, the biochemical degradation of the organic matter consumes the dissolved oxygen in the water, resulting in the lack of oxygen in the water body. High concentrations of surfactants are significantly toxic to microorganisms. [0003] At present, there is a foam separation method for this type of wastewater treatment: air is introduced into the wastewater containing surfactants to generate a large number of bubbles, so that the surfactants in the wastewater are adsorbed on the surface of the bubbles to form foam, and the foam floats up to The water surface is enriched to fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F101/30
CPCC02F1/001C02F1/441C02F1/52C02F1/5236C02F1/56C02F1/66C02F9/00C02F2001/007C02F2101/301C02F2209/06C02F2209/08C02F2209/10C02F2301/08
Inventor 夏志先张金山朱磊
Owner SHANGHAI FENGXIN ENVIRONMENTAL PROTECTION TECH
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