CAJ | 학술논문

基于响应面优化法，研究紫外/氯耦合处理饮用水中氨氮的效能。考察氯氮质量比、紫外辐射时间和pH值3个影响因素及其交互作用对氨氮去除的影响，采用二阶方程进行数学模拟，并优化工艺条件。结果表明，紫外/氯耦合技术能有效去除氨氮，三因素均对氨氮的去除影响显著，各因素的交互作用也显著存在。数学拟合模型的相关系数较高(R2=0.992)，模型回归性好。满足饮用水氨氮出水要求(0.5 mg·L-1)的最优工艺条件为：氯氮质量比4.00，紫外辐射时间6.00 min和pH值7.5。验证实验结果与预测值的偏差仅为0.64%，响应面拟合方程可用于氨氮去除率的预测和最优工艺条件的确定。紫外/氯耦合技术是一种新型的氨氮去除方法，具有投药量小、去除效率高、操作简单等优点。
기우향응면우화법，연구자외/록우합처리음용수중안담적효능。고찰록담질량비、자외복사시간화pH치3개영향인소급기교호작용대안담거제적영향，채용이계방정진행수학모의，병우화공예조건。결과표명，자외/록우합기술능유효거제안담，삼인소균대안담적거제영향현저，각인소적교호작용야현저존재。수학의합모형적상관계수교고(R2=0.992)，모형회귀성호。만족음용수안담출수요구(0.5 mg·L-1)적최우공예조건위：록담질량비4.00，자외복사시간6.00 min화pH치7.5。험증실험결과여예측치적편차부위0.64%，향응면의합방정가용우안담거제솔적예측화최우공예조건적학정。자외/록우합기술시일충신형적안담거제방법，구유투약량소、거제효솔고、조작간단등우점。
The combined UV/chlorine process, as a photochemistry process, was investigated to improve the removal efficiency of ammonia in drinking water. Based on a central composite design, the effects of Cl/N mass ratio, UV radiation time and pH value and their combination on the ammonia removal rate were evaluated. Based on a mathematical model established between them, and these technical parameters for the combined UV/chlorine process was optimized. The results showed that all of the three factors had significant impacts on ammonia removal and the combined influence of Cl/N mass ratio and UV radiation time was also outstanding. Furthermore, the prediction of a second-order regression model (R2=0.992) derived by response surface methodology was satisfactory. The conditions obtained by optimization to meet the standard of ammonia concentration in drinking water (0.5 mg·L-1) were:Cl/N mass ratio 4.00,UV radiation time 6.00 min and pH value 7.5. The experimental value agreed with the predicted value with only 0.64%deviation. Finally, these results illustrated that combined UV/chlorine process was an effectively alternative method for ammonia-containing water treatments, with several advantages of low chemical consumption, high efficiency and easy operation.