Multi-physical field enhanced high-electrolyte wastewater treatment method and multi-physical field enhanced high-electrolyte wastewater treatment device

Abstract

The invention discloses a multi-physical-field enhanced high-electrolyte wastewater treatment method which is characterized by comprising the following steps: high-electrolyte wastewater is introducedinto a reactor provided with more than one anion filtering component and more than one cation filtering component, wherein the anion filtering components and the cation filtering components are alternately arranged at intervals in the reactor, because the membrane has an interception effect on electrolyte anions and cations and insoluble matters, the two ends of the filtering components keep certain water head pressure, and meanwhile, an electric field is applied to the anion filtering components and the cation filtering components, so that the wastewater passes through the anion filtering components and the cation filtering components to complete the purification treatment of the high-electrolyte wastewater, and when the number of attachments on the filtering component is large, the membrane is cleaned by ultrasonicultrasonic waves. The method disclosed by the invention is high in desalting effect, low in cost, simple in technical operation, easy to implement and beneficial to regeneration and cyclic utilization and market popularization and application of the high-electrolyte wastewater.

Description

Technical field[0001]The invention belongs to the technical field of wastewater treatment, and specifically relates to a method and a device for strengthening and regulating the treatment of high-electrolyte wastewater with multiple physical fields.Background technique[0002]High-salinity wastewater refers to the difficulty of obtaining a mass fraction of total dissolved solids (TDS) greater than 8% by using reverse osmosis technology to recover most of the "fresh water" after reaching the standard. The concentrated brine is then processed by evaporation or other desalination technology. Concentrated waste liquid from biochemical treatment; or waste water with high COD content, total dissolved solids (TDS) mass fraction greater than 15% and unable to be biochemically treated directly generated in the chemical production process. In order to completely eradicate the pollution of this kind of high-salt wastewater, it is not only necessary to reduce its COD content, but more importantly...

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Problems solved by technology

[0005] In view of the problems of low desalination efficiency, incomplete desalination, high cost, and easy to cause secondary pollution in the desalination process of the existing high-salt wastewater treatment technology, especially synthetic pharmaceutical wastewater with complex components, this method mainly uses membrane separation , Electrochemical technology and ultrasonic cleaning coupling desalination, the high electrolyte wastewater passes through the anion and cation selective permeation membrane with a certain distance, and the membrane is fixed by two conductive screens to form a filter assembly to maintain a certain head pressure, And apply an electric field on the conductive screen with a voltage of 1~36V. Under the action of the membrane, voltage and certain hydraulic head, the anions and cations and insoluble substances in the high-electrolyte wastewater flowing through are quickly isolated on the wastewater side of the membrane. , and attached to the membrane, and the substances attached to the membrane are sank by means of ultrasound, so as to achieve good results in the treatment of high-electrolyte wastewater; this technology has high desalination effect, low cost, simple technical operation, easy to implement, and helpful For the regeneration and recycling of synthetic pharmaceutical wastewater, this equipment is an integrated equipment that is convenient to be used as a mobile component

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