Advanced treatment of coal tar wastewater and mechanism by fluid three-dimensional electrode reactor
WANG Wan-peng
ZHOU Ji-ti
ZHANG Jin-song
Abstract：Advanced treatment of coal tar wastewater by three-dimensional fluid electrode was studied. Graphite electrodes were used in the reactor instead of iron electrodes which used in traditional electro-fenton process. The excellent process conditions and degradation mechanism were investigated. Optimum operating conditions are that electric field strength is 1.5 V/cm,air flux density is 30 m~3/(m~2·h) ,pH is 2,and 100 g/L of activated carbon. Under the conditions,the removal rate of COD_(cr) and decoloration rate are 70% and 84% respectively within 60 min, and the B/C (BOD~5/CODcr) ratio increases three times. The analysis results of UV spectrum and HPLC show that part of chemicals are completely degraded and compositions of the wastewater are changed during the electrolysis reaction. The effluent is able to reach China national discharge standard I without any secondary pollution.
Keywords：fluid three-dimensional electrodecoal tar wastewaterultraviolet spectrum
Publication Date：2010-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 122-125 )