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Equipment and technology for recycling wastewater containing oil and surfactants

A surfactant and wastewater technology, used in water/sewage treatment, water/sewage multi-stage treatment, neutralized water/sewage treatment, etc. Short, small process area, realize the effect of automatic management

Inactive Publication Date: 2019-03-08
GUANGDONG ENG TECH INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem that oily substances and surfactants are likely to cause membrane system fouling and make it difficult to reuse wastewater, the present invention provides an equipment and process for reusing wastewater containing oil and surfactants

Method used

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  • Equipment and technology for recycling wastewater containing oil and surfactants
  • Equipment and technology for recycling wastewater containing oil and surfactants

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Experimental program
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Effect test

Embodiment 1

[0043] The present invention is used for the application of the reusable equipment and process of oily and surfactant wastewater in certain oily and surfactant wastewater:

[0044]For the oily and surfactant wastewater of a factory whose initial influent COD≦60mg / L, the pH is adjusted to 5.0-6.0 with dilute sulfuric acid in the comprehensive adjustment tank, and the conductivity is adjusted to 7000-9000μs / cm with NaCl; the adjusted wastewater is passed through The lift pump enters the electrochemical treatment equipment, and the flow rate is set at 0.5-0.8m 3 / h, the DC current is controlled to be 1.0-2.0A, the voltage is 50-70V, the effluent is introduced into the aeration sedimentation tank, the aeration rate is controlled to be 80-100min / L, the pH is adjusted to 9.0-10.0 with NaOH, and the residence time of the sedimentation tank It takes 10-20 minutes to complete the solid-liquid separation. The clear liquid is first filtered through the manganese sand filter through the p...

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Abstract

The invention belongs to the technical field of industrial wastewater treatment and discloses equipment and technology for recycling wastewater containing oil and surfactants. According to the technology, substances such as oil substances, the surfactants and the like resulting in membrane fouling blockage in the wastewater are removed by electrochemical equipment, and the purpose of wastewater recycling is achieved by coupling with membrane devices. The technology has the characteristics of occupying a small area, being good in treatment effect, short in time, free of secondary pollution andsimple and convenient to operate and the like, and therefore, the broad application prospect is provided for recycling of the wastewater containing oil and the surfactants.

Description

technical field [0001] The invention relates to the technical field of industrial wastewater treatment, in particular to a device and process for reusing oily and surfactant-containing wastewater. Background technique [0002] With the increasing shortage of water resources, the reuse of wastewater has attracted more and more attention. Therefore, membrane treatment processes such as microfiltration, ultrafiltration and reverse osmosis are more and more widely used in wastewater reuse treatment. However, traditional treatment methods still cannot completely remove some non-biodegradable organic substances, such as oily substances, surfactants, and colloidal particles. The existence of such substances will cause serious fouling to the membrane system and greatly reduce the water production rate. , and even cause the membrane system to collapse. [0003] Among them, the fouling of the membrane system by oil substances and surfactants is particularly common. Most of the oils...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/06
CPCC02F1/004C02F1/283C02F1/441C02F1/463C02F1/52C02F1/66C02F9/00
Inventor 姚创刘建新黄弦李学斌唐源胜饶俊元杨远秀
Owner GUANGDONG ENG TECH INST
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