有机膨润土吸附处理苯胺基乙腈生产废水

采用自制的有机膨润土对苯胺基乙腈生产废水进行吸附预处理实验,分别考察了废水pH、有机膨润土投加量、吸附温度及吸附时间等因素对吸附率的影响。结果表明,有机膨润土对苯胺基乙腈生产废水进行吸附预处理是可行的,其较优的工艺条件为:有机膨润土投加量为20 g/L、废水pH为6.0、吸附温度为30℃、吸附时间为60 min,在此条件下COD及苯胺去除率分别达到了23.3%及54.4%,可生化性BOD5/COD由难以测量出可提高到0.11左右。

Treatment of N-phenylglycinonitrile wastewater by organo-bentonite adsorption

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.