Treatment of N-phenylglycinonitrile wastewater by organo-bentonite adsorption
有机膨润土吸附处理苯胺基乙腈生产废水

A preprocessing absorption treatment of N-phenylglycinonitrile wastewater with self-made organo-bentonite was conducted to find out the impact on absorption rate by such factors as pH,organo-bentonite addition,adsorption time and temperature.The test results indicated that it was feasible to do the preprocessing absorption treatment of N-phenylglycinonitrile wastewater with organo-bentonite,and the advantageous process conditions were as follows,the organo-bentonite concentration of 20 g/L,the pH of wastewater of 6.0,the adsorption temperature of 30℃ and the adsorption time of 60 min.Under these conditions,the organo-bentonite had a high ability of adsorption,the removal rate of COD and anilines could reach 23.3% and 54.4%,respectively and the BOD5/COD could be raised to 0.11,which was otherwise unable to be tested.