A process 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 iron-carbon micro-electrolysis technology, which is specifically carried out according to the following steps: preparing spherical iron-carbon fillers, and the iron-carbon fillers mainly include the following raw materials in parts by weight: iron filings 35-45 parts, 15-18 parts of graphite, 20-25 parts of activated carbon, and 5-8 parts of phenolic adhesive, add the iron filings into the vacuum melting furnace for smelting, spray the smelted liquid iron through the atomizing nozzle, and cool it to form a spherical shape The surface of the spherical powder of iron filings is filled with holes and grooves, and the graphite and activated carbon are crushed and mixed, and then added to the centrifuge together with the spherical powder of iron filings and phenolic adhesive to prepare iron-carbon fillers; the waste water is passed into the purification tank Inside, adjust the pH value of the waste water to be between 3-4; pass the waste water through the packing in the electrolytic purification tube; add sodium hydroxide to the purification cylinder to make the pH of the purified water 6-10, stir and let stand for precipitation, and take the purified water. The supernatant of water; the process of the invention is simple, the cost is low, and it is suitable for wide popularization.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a process for removing tetrabromobisphenol A in wastewater based on iron-carbon micro-electrolysis technology. Background technique [0002] Tetrabromobisphenol A is one of the most widely used persistent organic pollutants in the environment. It has long-term residual, bioaccumulative, semi-volatile, highly toxic and carcinogenic, teratogenic and mutagenic properties in the environment, and can migrate over long distances in the atmosphere and can be deposited back to the earth, causing atmospheric, water, sediment and Pollution of soil and other environmental media and related ecosystems. The concentration of tetrabromobisphenol A in the environment is generally low, the chemical properties are stable, and it has a high bioconcentration coefficient, which can cause serious damage to the ecosystem and human health through the food chain. [0003] Usually, the content ...

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