Fe^(2+)/NaClO氧化处理喷射磨料生产废水的实验研究

Study on Treatment of Wastewater from Plastic Water-jet Abrasive Production by Fe^(2+)/NaClO

采用Fe^(2+)/NaClO氧化法对喷射磨料生产产生的高浓度有机废水进行预处理。选择了pH、NaClO的投加量、硫酸亚铁投加量等影响因子进行实验研究,分析了各影响因子的作用机理,得出了最佳操作条件:室温条件下,废水初始pH值为4.0,投加NaClO为66.7mL/L,硫酸亚铁投加量为33.3mmol/L,反应时间为60min,废水中COD的去除率可达到52%,PVA的降解转化率为74%,处理效果明显,但出水未达到废水排放标准,需对其做进一步处理。

The Fe ^2＋ /NaClO reagent was used for the treatment of high concentration organic wastewater from production of plastic abrasives. Taken as the influencing factors, the pH value, dosage of NaClO and FeSO 4 ·7H 2O were studied. At the same time, the mechanism of the affecting factors was analyzed. The optimal operational conditions were determined as follows： under the conditions of indoor temperature, the initial pH value of the solution was 4.0, the added mass concentration of NaClO （10% ） was 66.7 mL/L, the concentration of FeSO 4 ·7H 2O was about 33.3 mmol/L and reaction time was 60 min. Under the optimum technological conditions, the removal rate of COD reached 52.0% and the PVA degradation rate of PVA was about 74%. The treatment effect was obvious, but the effluent didn t meet the waste water discharge standard. So it needed further treatment.