采用共固定化白腐真菌对印染废水脱色的方法

Method for decolorizing printing and dyeing wastewater by adopting co-immobilized white-rot fungi

Abstract

The invention relates to wastewater treatment application technologies and aims to provide a method for decolorizing printing and dyeing wastewater by adopting co-immobilized white-rot fungi. The method comprises the following steps: inoculating a seed solution containing any two or more white-rot fungi into a liquid culture medium with an immobilization carrier at a volume ratio of 5-20%, and then performing shake culture at 25-30 DEG C for 5-7 days; after covering the immobilization carrier with thalli, performing separation to obtain a carrier fixed with the white-rot fungus thalli, and putting the carrier into the printing and dyeing wastewater, thereby realizing decolorization treatment. The method fully utilizes enzymes generated by the white-rot fungi with different species and complementary enzyme systems to degrade and decolorize the printing and dyeing wastewater, can realize complete degradation of printing and dyeing wastewater pollutants, and can realize repeated decolorization. The method can be used for decolorization treatment of the printing and dyeing wastewater containing dyes with different structure types, and is high in decolorization efficiency. As the pollutants are degraded by the white-rot fungi, degradation products do not cause secondary pollution to a water body.
本发明涉及废水处理应用技术,旨在提供一种采用共固定化白腐真菌对印染废水脱色的方法。该方法是将含有任意两种或两种以上白腐真菌的种子液,按体积比5%~20%接种于装有固定化载体的液体培养基中,然后在25℃~30℃下震荡培养5~7天;待菌体覆盖固定化载体后,分离得到固定有白腐真菌菌体的载体,将该载体其投放于印染废水中即可实现脱色处理。本发明充分利用不同种属、酶系互补的白腐真菌产生的酶类共同对印染废水进行降解脱色,可以实现对印染废水污染物彻底降解,并可实现重复脱色。可用于含有不同结构类型染料的印染废水的脱色处理,且脱色效率较高。由于污染物被白腐真菌生物降解,降解产物不会对水体造成二次污染。

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