Technology for removing tetrabromobisphenol A in wastewater based on iron-carbon micro-electrolysis technology

Abstract

The invention discloses a process for removing tetrabromobisphenol A in wastewater based on an iron-carbon micro-electrolysis technology, which is specifically carried out according to the following steps: preparing a spherical iron-carbon filler which mainly comprises the following raw materials in parts by weight: 35-45 parts of scrap iron, 15-18 parts of graphite, 20-25 parts of activated carbon and 5-8 parts of a phenolic adhesive, adding the scrap iron into a vacuum smelting furnace for smelting, spraying the smelted liquid iron out through an atomizing nozzle, conducting cooling to form spherical powder, punching hole grooves in the surface of the iron scrap spherical powder, smashing and mixing graphite and activated carbon, then adding the mixture, the iron scrap spherical powder and a phenolic adhesive into a centrifugal machine together, and preparing an iron-carbon filler; introducing the wastewater into a purification tank, and adjusting the pH value of the wastewater to 3-4; enabling the wastewater to pass through the filler in an electrolytic purification pipe; and adding sodium hydroxide into a purification cylinder to enable the pH value of the purified water to be 6-10, conducting stirring, standing and precipitating, and taking supernate of the purified water. The method is simple in process, low in cost and suitable for wide popularization.

Description

Technical field [0001] The present invention relates to the field of sewage treatment, and more particularly to a process of removing tetraromobutphenol A in wastewater based on ferrous microelectronic solution. Background technique [0002] Tetabromobisphenol A is a large amount of use and has a wide range of persistent organic pollutants in the environment. It has long-term residual property, bio-accumulating, half volatility, high toxicity and carcinogenic, teratogenic and migration, can be migrated in the atmosphere and deposited back to the earth, causing atmosphere, water, sediments and Environmental media and related ecosystem pollution in soil. The concentration of tetrabromide bisphenol A in the environment is generally low, stable in chemical properties, with high organisms, can cause serious damage to ecosystems and human health through the food chain. [0003] Typically, tetraromobisphenol A is low in contaminated water, and it is difficult to remove through direct ad...

AI Technical Summary

Problems solved by technology

[0005] The iron-carbon filler density of the current iron-carbon micro-electrolysis method is low, the contact area between the formed fill layer and the pollutants in the wastewater is small, and the removal efficiency of the pollutants is low, and the current fillers are basically flat fillers. The formed fill layer has a short removal path, which will also lead to low removal efficiency of the fill layer for pollutants, and the current iron-carbon electrolysis method is expensive and not suitable for widespread promotion