摘要
采用微滤＋反渗透双膜组合工艺深度处理农药废水,通过均匀试验考察进水温度、操作压力、回收率和pH等因素对无机盐去除率的影响,建立回归方程,对最佳控制参数进行快速寻优,并在优化工况下运行。试验结果表明：各因素的影响程度依次为操作压力〉进水水温〉回收率〉pH;最佳控制参数：操作压力为577 kPa,进水温度为20℃,pH值为6-9,回收率为50%;在此工艺条件下,可使废水的ρ（COD）降至29.1 mg/L以下,去除率达80.2%,ρ（NH3-N）降至4.7 mg/L以下,去除率达69.4%,脱盐率、Cl^-去除率、SO4^2-去除率分别达97.7%,97.6%、97.8%,浊度基本完全去除,出水水质满足GB/T 19923—2005《城市污水再生利用工业用水水质》标准。
Microfiltration（ MF） and reverse osmosis（ RO） were applied for the advanced treatment of pesticides wastewater.Through the uniform test,the effect of different influent temperature,operating pressure,recycling rate and pH on the removal of inorganic salt was studied. The optimal control parameters were determined by building the regression equation. The results showed that the order of influence degree of each factor was pressure 〉temperature 〉recycling rate〉 pH. The optimal control parameters were as follows： operating pressure of 577 k Pa,temperature of 20 ℃,pH of 6 - 9,recycling rate of 50%. Under these conditions,the concentration of COD in pesticides wastewater decreased to 29. 01 mg/L below and its removal rate was80. 2%,the concentration of NH3-N decreased to 4. 7 mg/L below and its removal rate was 69. 4%. Desalination rate,Cl^-removal rate,and SO4^2-removal rate reached 97. 7%,97. 6% and 97. 8%,respectively. Turbidity was almost completely removed. The water quality could completely meet ＂The Reuse of Urban Recycling Water Water Quality Standard for Industrial Uses＂（ GB/T 19923 ― 2005）.
出处
《环境工程》
CAS
CSCD
北大核心
2016年第9期35-39,共5页
Environmental Engineering
关键词
微滤
反渗透
均匀试验
深度处理
农药废水
microfiltration
reverse osmosis
uniform test
advanced treatment
pesticides wastewater
