A method for micro-electrolysis to strengthen sulfate-reducing bacteria to treat acid mine wastewater and micro-electrolysis bioreactor

Abstract

The invention discloses a method for micro-electrolysis strengthening sulfate-reducing bacteria to treat acid mine wastewater and a micro-electrolysis bioreactor. By filling the reactor with iron-carbon micro-electrolysis filler and inoculating sulfate-reducing bacteria, the micro-electrolysis produced by iron and carbon The reaction quickly reduces some metal ions in acidic mine wastewater, increases the pH of the system, and solves the problem of inhibition and poisoning of sulfate-reducing bacteria by low pH and heavy metals; the electric stimulation generated by micro-electrolysis improves the sulfate reduction rate of sulfate-reducing bacteria, and partially Metals are removed as sulfide precipitates; Fe is produced 3+ and alkalinity, so that part of the metal is Fe(OH) 3 Removal by coagulation and hydroxide precipitation. Compared with other bioreactors, the micro-electrolysis bioreactor of the invention has the advantages of high sulfate, heavy metal removal efficiency and high system stability.

Description

A kind of method and micro-electrolysis strengthening sulfate-reducing bacteria to treat acid mine wastewater Electrolytic Bioreactor technical field The present invention relates to the field of waste water treatment, be specifically related to a kind of micro-electrolysis strengthening sulfate-reducing bacteria to process acid mines A method for wastewater and a microelectrolysis bioreactor. Background technique At present, in the coal production process in my country, the annual discharge of acid mine drainage (AMD) It reaches 3.6 billion tons, accounting for nearly one-tenth of the total discharge of industrial wastewater in the country. If it is not handled properly, it will cause harm to environmental pollution. Serious and often irreversible. The main methods of its treatment are neutralization method, wetland method and biological method. Among them, the neutralization method is easy to produce A large number of solid wastes that are difficult to treat ca...

AI Technical Summary

Problems solved by technology

By adding biochar and iron powder to the reactor, micro-electrolysis is produced, thereby improving the ability of sulfate-reducing bacteria to treat acid mine wastewater, and solving the problem of low sulfate reduction rate and electron donor when sulfate-reducing bacteria treat acid mine wastewater. Insufficient and low pH, poor tolerance to heavy metals

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