白腐真菌降解经微电解预处理二硝基重氮酚废水的研究

利用自行培养、驯化的白腐真菌,对经过微电解预处理的二硝基重氮酚(DDNP)废水进行了生物降解试验.结果表明,经过微电解预处理后的DDNP废水(含CODCr467 mg/L)经生化处理108 h后,出水中CODCr在131 mg/L左右,达到国家二级排放标准;其中的苯胺类、硝基类的去除率达到99.9%以上,达到国家一级排放标准.对试验所获得的时间序列进行动力学研究结果证明,白腐真菌降解经微电解预处理后的DDNP废水的反应为准一级动力学反应.

Biodegradation of DDNP wastewater obtained from pretreated by micro-electrolysis using white rot fungu

The DDNP wastewater was pretreated by micro electrolysis,and then was biodegraded by the white rot fungus cultivated and domesticated at laboratory in situ. CODCr was reduced from 467 mg/L in influent to 131 mg/L in effluent after 108 h biodegradation, reaching the National Second-degree Wastewater Discharge Standard. The removals of aniline compounds and nitro compounds were over 99. 9%, reaching the National First degree Wastewater Discharge Standard. Quasi-one-order reaction was followed for white rot fungus biodegradation of the DDNP from micro electrolysis-pretreated wastewaters.