高浓度味精废水预处理试验

采用絮凝法对味精高浓度有机废水进行了絮凝烧杯试验,讨论了絮凝剂的选择、投加量、pH值以及与有机高分子絮凝剂配合使用对絮凝效果的影响.研究结果表明:以自制的新型无机高分子絮凝剂聚硅硫酸铁(PFSS),用于万县高浓度味精废水处理表现出优良的絮凝性能,PFSS的最佳投药量为20 mg/L,最适pH值为7.5～8.0,在此条件下复合无机高分子絮凝剂PFSS对味精废水的CODcr去除率远远高于PFS和PAC,可达68%以上;浊度去除率为89.7%.此外,有机高分子絮凝剂的加入对PFSS的絮凝处理效果有增强作用.

Treatment of Tick Effluent From Monosodium Glutamate Production

In-beaker flocculation experiments are performed on the treatment of thick organic wastewater from sodium glutamate production. The effects of different flocculantand its dosage, pH value, and the effects of the composition between the inorganic polymer flocculants and the organic polymer flocculants are investigated.The best flocculation effect is achieved by adopting an inorganic polymeric flocculant PFSS(self-made). Under the condition of pH value within (7.5) to 8.5, the optimum dosage of PFSS is 20 mg/L, the COD_(cr)removal ratio was 68%, and the turbidity removal efficiency was over 89.7%. While, the organic polymer flocculants can synergistic coagulation effects when it is compounded with PFSS. The results demonstrate that the application of such flocculation technology to the pretreatment of thick effluent from sodium glutamate production is effective and economic.