Apparatus and method for processing parachlorophenol-containing waste water and recovering electric energy

Abstract

The invention discloses a device and a method for treating the wastewater containing parachlorophenol and simultaneously recovering power energy, wherein the device comprises an anode chamber and a cathode chamber which are integrated into a whole; a proton exchange membrane is arranged between the anode chamber and the cathode chamber; an anode and an aerator pipe are arranged in the anode chamber; and a cathode and an aerator pipe are arranged in the cathode chamber. In the process of treating the wastewater containing parachlorophenol, the method uses the anaerobic sludge inside the anode chamber for oxidizing the protons and electrons generated by the organic matters of nutrient fluid under anaerobic condition so as to reduce the parachlorophenol in the wastewater into phenol and recover power energy simultaneously. The device with simple structure and convenient operation can be applied at normal temperature and is applicable to the treatment of the wastewater containing organic contaminants of chlorophenols. The method has more than 90 percent and maximally 100 percent of parachlorophenol removal rate and can recover power energy in the treatment process. The device and the method can run for a long time after one-shot and can be applied to treating high concentration wastewater containing organic contaminants of chlorophenols, thus being suitable for large-scale popularization and application.

Description

technical field [0001] The invention relates to a device and method for treating waste water containing p-chlorophenol by utilizing the principle of microbial fuel cells. Realize the simultaneous recovery of electric energy in the process of treating wastewater. The utility model belongs to the technical field of environmental protection and energy recovery. Background technique [0002] Persistent organic pollutants (Persistent Organic Pollutants, POPs) are long-term residual, bioaccumulative, semi-volatile and highly toxic, and can migrate over long distances through various environmental media (atmosphere, water, organisms, etc.) Natural or synthetic organic pollutants that exist in the environment and pose serious hazards to human health and the environment. Due to their own biological toxicity, most of POPs substances have strong lipophilic and hydrophobic properties, and are easy to accumulate in organisms. When POPs substances are ingested by organisms through vario...

AI Technical Summary

Problems solved by technology

In water treatment, it is difficult to remove effectively by conventional physicochemical process and biological treatment

The advanced oxidation technology in the traditional method of treating chlorophenols usually requires extreme conditions of high temperature and high pressure, which makes the cost high, the operation difficult, and the equipment requirements are strict

However, direct treatment with microorganisms cannot treat high-concentration wastewater because of the biological toxicity of chlorophenols.

However, the efficiency of a series of chemical reduction treatment methods represented by zero-valent iron reduction technology has yet to be improved.

Images