摘要
研究了预氧化(高锰酸钾、氯、过氧化氢)对混凝—溶气气浮工艺去除铜绿微囊藻的影响。通过检测出水浊度、藻类浓度以及UV_(254)等指标来评价预氧化对藻类的去除效果。试验结果表明:在氧化剂最佳投量下,经过KMnO_4、Cl_2和H_2O_2预氧化后,藻类去除率分别提高了10.81%、11.65%以及9%,其中以氯对藻类去除效果最好,但预氯化过程中引起了藻细胞的破裂使得胞内有机物释放到水中,造成出水中UV_(254)的升高。几种氧化剂对比研究结果表明,采用高锰酸钾预氧化不仅能够节约经济费用,而且不会因藻体内有机物的大量外流而降低出水水质的安全性。
Study was made on the removal of Microcystis aeruginosa by pre-oxidation （chlorine, permanganate potassium or hydrogen peroxide） and coagulation-DAF process. The effluent turbidity, algae concentration and UV254 were examined, through analyzing the variation of the above values, the effect of pre-oxidation on algae removal could be estimated. The results of the experiment showed that： with the optimal dosage of oxidizers of KMnO4, Cl2 and H2O2, the removal rate of algae increased 10. 81%, 11. 65% and 9% respectively after pre-oxidation. The highest algae removal rate could be obtained with chlorine pre-oxidation, but unfortunately this method stimulated the releasing of the intracellular components of algae to make effluent UV254 increase. Comparison of the results showed that permanganate potassium could save the dosage and improve the water quality, because in this case no intracellular components of algae were released.
出处
《给水排水》
CSCD
北大核心
2007年第7期23-26,共4页
Water & Wastewater Engineering
关键词
预氧化
氯
高锰酸钾
过氧化氢
铜绿微囊藻
Pre-oxidation
Chlorine
Permanganate potassium
Hydrogen peroxide
Microcystis aeruginosa
