Fenton氧化/强化混凝法预处理槟榔废水的试验研究

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,H202投加量为247.5 g/L,Fe2投加量为1.40 g/L,反应时间为2h的条件下,CODcr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的条件下,出水的CODcr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.

Study on Pre-Treatment of Areca Wastewater by Fenton Oxidation-Reinforced Coagulation Process

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.