含硝基苯类化合物废水预处理技术研究进展

硝基苯类化合物是重要的化工原料和精细化工中间体,它性质稳定,属难降解有机物,不易被生物降解,对环境危害大。由于高浓度硝基苯类化合物对生物有抑制作用,难以生化降解,单一使用生化法处理高浓度硝基苯类废水不可行,因此必须在生化处理单元前进行预处理。通过预处理,改变硝基苯类化合物的分子结构,使之变成较易生物降解的化合物,降低废水的毒性,提高废水的可生化性,再用生化法处理,以达到消除环境污染的目的。

Study on the Pretreatment Technique of Wastewater Containing Nitrobenzene Compounds

Nitrobenzene compounds is an important chemical raw materials and fine chemical industry product, they are stable, hard-to-degrade and can do great harm to the environment. It is not feasible to use single biochemical method to treat high concentration of nitrobenzene wastewater. Because the high concentration of nitrobenzene compounds have inhibitory effect on microorganism. It must be pretreated before biological treatment unit. It make change the molecular structure of nitrobenzene compounds to a biodegradable compounds by preprocessing to reduce the toxicity of the wastewater and improve the biodegradability of wastewater. Then use the biochemical processing to achieve the elimination of environmental pollution.