HIGHLY EFFECTIVE SEWAGE TREATMENT BASED ON REGULATION AND CONTROL OF DIRECTED ELECTRON FLOW AND APPARATUS THEREOF

摘要

This present disclosure relates to a highly effective sewage treatment based on regulation and control of directed electron flow and apparatus thereof The apparatus includes an anaerobic fermentation electron generation chamber, a heterotrophic-autotrophic denitrification chamber and an aerobic membrane separation chamber. Low concentrated organic sewage is introduced into anaerobic fermentation electron generation chamber; then, particulate and partly dissolved organic substances are intercepted and absorbed by carrier materials; and extracellular currents generated by microorganism reaction are used in following autotrophic denitrification processing. Micro-/ultra-membrane separation processing is used to improve operation load and solid-liquid separation effect of sewage treatment and thereby effluent could meet the high recycling standards. The directed electron flow is regulated and controlled to enhance nutrients' removal and to reduce sludge yield and fouling rate of membrane. The sewage treatment could efficiently treat low concentrated organic sewage at normal temperature (>15° C.) and dramatically decrease energy consumption.

主权项

1. A sewage treatment method based on regulation and control of directed electron flow, which is characterized in comprising the steps of:
(1) Introducing sewage into an anaerobic fermentation electron generation chamber through a water inlet system; intercepting and absorbing particulate and part of the dissolved organic substances in said sewage by porous conductive carrier materials in said anaerobic fermentation electron generation chamber; converting the organic substances are converted into electrons by microorganism; then introducing the treated solution into a heterotrophic-autotrophic denitrification chamber and an aerobic membrane separation chamber in sequence; (2) In said heterotrophic-autotrophic denitrification chamber, transmitting electrons from outer circuit formed between said anaerobic fermentation electron generation chamber and said heterotrophic-autotrophic denitrification chamber; utilizing the electrons transmitted with residual organic substances in said treated solution after said step (1) by microorganisms through the heterotrophic-autotrophic denitrification pathway to remove nitrates or nitrites of a sludge mixture back-flowing from said aerobic membrane separation chamber; (3) In said aerobic membrane separation chamber, nitrificating the treated solution from said step (2) with high efficiency; meanwhile, TP removal rate is improved due to addition of chemical phosphorus removal reagent with automatic feeding device; finally, water with excellent quality is gained by suction of a membrane module.