白腐真菌-泥炭净化处理DDNP废水

摘要

二硝基重氮酚(DDNP)是苯酚的硝基衍生物,是一种优良的起爆药,其生产废水中主要含有重氮基、硝基等难降解的化合物,有强酸或强碱性,且毒性高.DDNP生产产生的废水水质分析显示数量最大的是硝基类化合物.依据工厂实际,提出了用白腐真菌-泥炭处理DDNP废水的生化和物理方法.采用培养、驯化的白腐真菌时,废水处理条件为:泥炭添加量5％～9％；温度(37±2)℃; pH值4.5±0.5；硫酸锰加入量1 mg·L-1;时间约7d.出水结果显示:色度几乎为零,pH≈6.0,CODcr≈-120 mg· L-1,符合国家二级排放标准.%Diazodinitrophenol (DDNP) is the nitro derivate of phenol and a good primary explosive.DDNP waste water contains diazo,nitro and other refractory compounds,with strong acid or strong alkali,and high toxicity.The quality analysis of wastewater produced by DDNP shows that it has a high content of nitro compounds.According to the factory practice,a biochemical and physical method together to deal with treatment of DDNP wastewater with white-rot fungi-peat is presented.When incubated,and acclimated white rot funguses are used,DDNP wastewater treatment conditions are:added amount of peat,5％ and 9％,temperature (37± 2) ℃; pH=4.5 ±0.5; added amount of manganese sulfate,1 mg· L-1; time about7 days.Effluent results reveal that:chroma is almost zero,pH ≈ 6.0 and CODcr≈ 120 mg · L-1,according with the country second emissions standars.