Device and method for synchronously treating anaerobic membrane biological sewage and recycling struvite

Abstract

The invention provides a device and method for synchronously treating anaerobic membrane biological sewage and recycling struvite. The device comprises an anaerobic bioreactor, a membrane module reactor and a power supply device, the anaerobic bioreactor is connected with the membrane module reactor, the power supply device is electrically connected with the membrane module reactor, the membrane module reactor comprises a shell, the shell comprises an anode plate, a cathode plate, a membrane module and a pH probe, the anode plate and the cathode plate are distributed on two sides of the membrane module, and the anode plate is a magnesium plate. In the invention, in the presence of an electric field, the electrode reaction can increase the pH value of the solution, effectively inhibit the acidification effect, stimulate microorganisms, accelerate the degradation speed of pollutants, increase the surface charge of sludge and relieve membrane pollution to a certain extent; and on the other hand, a magnesium plate is used as the anode plate, so that the problem of low nitrogen and phosphorus removal rate of the anaerobic membrane bioreactor can be solved, and the magnesium plate is converted into an available resource struvite to be recycled.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and relates to anaerobic membrane biological sewage treatment, in particular to an anaerobic membrane biological sewage treatment device and method for synchronously recovering struvite. Background technique [0002] Since the last century, with the rapid growth of the world's population and the rapid development of industrialization, people's living standards have continued to improve, making the amount and difficulty of industrial wastewater and domestic sewage treatment continue to increase. Serious water pollution and water shortages have become One of the most serious problems facing our country and the world. In addition, the technical demand for recovering resources and energy from wastewater and building a new model of carbon-neutral water treatment is increasing. Synchronous recovery of resources and energy in the process of sewage treatment has become an important part of sustai...

AI Technical Summary

Problems solved by technology

In addition, among nitrogen and phosphorus removal technologies, struvite precipitation is considered to be a promising technology. Struvite is a white crystal that is slightly soluble in neutral or alkaline conditions, making it a It can be used

Images