摘要
采用Fenton氧化/强化混凝法对湖南某食用槟榔生产排放的废水进行预处理实验研究。实验结果表明:采用Fenton试剂,在初始pH值为5.0,H_2O_2投加量为247.5 g/L,Fe^(2+)投加量为1.40g/L,反应时间为2 h的条件下,COD_(cr)去除率达到88.56%,色度去除率达到83.33%。继续采用10%的氢氧化钠对上清液进行强化混凝处理,在调节pH为9.0,反应时间为10 min的奈件下,出水的COD_(cr)可降至1980.0 mg/L,色度可降至20倍,颜色清澈,极大的消减了污染负荷,达到了良好的预处理效果。
Fenton Oxidation-Reinforced Coagulation is used to pre-treatment the edible areca catechu wastewater in a areca plant in Hunan province. The result shows that the optimum operating conditions of Fenton process are as follows ： initial pH is around 5.0, H2O2 dosage is 247.5g/L, Fe2＋ dosage is 1.4g/L, and reaction time is 2. Oh. The CODer and chromaticity removal rates of the wastewater are 88.56% and 83.33%. Then using 10% Sodium hydroxide solution to treat the superna- tant after Fenton process, when the supematant pH is controlled at 9.0 and reaction time is 10 minutes, the effluent COD, deereased to 1980.0mg/L, the chromaticity decreased to 20 times, and the water colour was clear. It greatly reduces the pol- lution load and reaches a good pre-treatment effect.
出处
《四川理工学院学报（自然科学版）》
CAS
2014年第1期19-22,共4页
Journal of Sichuan University of Science & Engineering(Natural Science Edition)
基金
国家自然科学基金重大项目(2008ZX07211-001)
关键词
FENTON试剂
强化混凝
槟榔废水
预处理
Fenton reagent
reinforced coagulation
areca wastewater
pre-treatment
