Ultra advanced treatment method and device for sewage

Abstract

The invention discloses an ultra advanced treatment method and an ultra advanced treatment device for sewage. The method is characterized in that: electroosmosis is combined with ion exchange, wherein an electroosmosis unit is an electrobath; a cathode / anode equate filter element electrode array and a design that a flow field is parallel to an electric field are adopted; strongly basic anion-exchange resin is filled between electrodes; a pump drive is adopted to input the sewage from the bottom of the electrobath in single stream; the sewage is divided into cathode effluent and anode effluent through a filter element electrode; the cathode effluent and the anode effluent respectively enter exchange columns filled with hydrogen and sodium cation exchangers so as to prepare desalted water after the ultra advanced treatment and disinfection solution with disinfection function; and electrode reverse operation controls the scaling of the electrodes and the alternate regeneration and operation of the subsequent ion-exchanger. The method is completely based on endogenesis, does not need any chemical agents or generate secondary pollution, and has broad spectrum in the aspect of advanced treatment of the sewage, so a wide space is provided for the application and development of the method.

Description

technical field [0001] The invention relates to an ultra-deep treatment method and device for sewage, in particular to an ultra-deep sewage purification method based on the internal source of sewage by electroosmotic ion exchange, which belongs to the technical field of sewage resource utilization. Background technique [0002] Usually the discharge of urban sewage is 75-85% of the consumption, and the discharge of industrial sewage is about 80-90% of the consumption. Actual utilization by biological or chemical processes and vaporization losses are less than 25%. Due to the low sewage treatment rate in our country, most surface and groundwater resources are polluted to varying degrees, which intensifies the pressure of water shortage on the healthy and sustainable development of the economy and society. The implementation of sewage recycling is not only beneficial to enterprises to increase income and reduce expenditure, reduce consumption and increase efficiency, but also...

AI Technical Summary

Problems solved by technology

However, the polarization and permeation phenomena and their effects still exist due to the perpendicularity of the membrane surface and the flow field to the electric field, which has become an important factor restricting the improvement of its operating efficiency and the expansion of its application range.

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