不同pH值条件下天然高分子絮凝剂处理废水的效果研究

改性淀粉絮凝剂具有无毒、原料来源广、价格低、易于生物降解等优点,近年来得到重视和发展应用.文章通过絮凝实验对改性淀粉絮凝剂在不同pH值条件下处理模拟废水的效果进行了初步探讨.实验结果表明,改性淀粉在废水处理中COD去除率效果显著,改性淀粉的混凝效果受不同的pH值的影响不大,优于无机絮凝剂.

Study on the Effect of Modified Starch on Waste Water at Different pH Values

Modified starch flocculants had a series of virtues such as non-toxicity,abundance in resources,low price and biodegradability.Because of their good performance in flocculation,the modified starch flocculants have been widely applied to the environment.Through the jar test of coagulation,this paper studies the effect of the modified starch at different pH values on the treatment of simulated waste water.The experimental results indicated that the modified starch had a remarkable effect on the COD elimination rat in waste water treatment.However,the coagulation effect of the modified starch was not easily affected by pH values,which is superior to the inorganic flocculants.