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脱硫废水零排放工艺振动膜+烟道蒸发何守昭香港正昌资源及科技有限公司DunwellVMATCo.,Ltd.2016copyrightreservedDunwellGroup常规零排放工艺•机械蒸汽再压缩循环蒸发技术+晶种法技术•高效反渗透膜+MVR•大通道蝶式膜技术+MVR•电渗析+MVR2016copyrightreservedDunwellGroup常规处理法•有一点事共通：必需软化•膜受不了•MVR受不了2016copyrightreservedDunwellGroup常规处理法•投入大量生石灰和碳酸钠软化，40kg/m3•每吨脱硫废水软化成本RMB30~50元•以一间有2台600MW发电机的电厂，每小时产生25m3脱硫废水•每年软化费用RMB8,760,000元•每年投药量8,760吨(219辆40呎货柜)•才能进入蒸发器回收水•因浓度太高，膜技术也不能用2016copyrightreservedDunwellGroup如何减少蒸发？•蒸发的运行费用和吨水投资非常高•如何减少蒸发？•先要明白卷式RO膜的限制：–通道较窄–剪切力不足2016copyrightreservedDunwellGroup °C10 °C15 °C20 °C30 °C40 °C50 °C60 °C70 °C80 °C90 °C100 °CCalciumcarbonate(Aragonite)CaCO3-Aragonite000.000775000000000Calciumcarbonate(Calcite)CaCO3-Calcite000.000617000000000CalciumchlorideCaCl259.564.774.5100128013701471541590CalciumsulfateCaSO4.2H2O0.2230.2440.2550.2640.26500.24400.23400.2050MagnesiumcarbonateMgCO3000.039000000000MagnesiumchlorideMgCl252.953.654.655.857.5061066.169.573.30MagnesiumsulfateMgSO42228.233.738.944.5054.6055.852.950.40PotassiumcarbonateK2CO3105109111114117121.212701401481560PotassiumchlorideKCl2831.234.237.240.142.645.8051.353.956.30PotassiumsulfateK2SO47.49.311.11314.8018.2021.422.924.10SodiumcarbonateNa2CO3712.521.539.749046043.943.945.50SodiumchlorideNaCl35.6535.7235.8936.0936.3736.6937.0437.4637.9338.4738.990SodiumsulfateNa2SO44.99.119.540.848.8045.3043.742.742.502016copyrightreservedDunwellGroup卷式膜结垢•通道较窄，易产生结垢2016copyrightreservedDunwellGroup结垢除硬•脫硫廢水是高濃度游離狀的Ca2+、Mg2+、HCO3-•需投入大量石灰水CaOH2和碳酸鈉Na2CO3軟化•化学除硬增加单价盐•对整体浓缩比提高没有帮助•反而增加固废、增加劳动力•振动膜本身就是除硬的技术•采用烟道雾化蒸发结晶2016copyrightreservedDunwellGroup结晶基础理论•粒状结晶•表面结晶2016copyrightreservedDunwellGroup震动膜工作原理•多層式平張薄膜•一次性或批次式過濾2016copyrightreservedDunwellGroup震动膜工作原理•膜組在扭力彈簧上扭動–¾-1½”@52Hz–輸入低能量產生強大剪切力2016copyrightreservedDunwellGroup振动膜模拟产水ug/g振动膜实际产水ug/g振动膜模拟浓水ug/g振动膜实际浓水ug/gCa++1190410.522081207Mg++5540171051027910052Na+347013119163577709K+6382451.111691543Cl-168002602513109328035SO4--68401121058894COD1060181968448TDS347004577786985665342硬度258008045947844445122016copyrightreservedDunwellGroup模拟与检测比较进水ug/g振动膜模拟产水ug/g振动膜实际产水ug/g振动膜模拟浓水ug/g振动膜实际浓水ug/gCa++20304922.849604600Mg++28004622.264678460Na+173035932245142530K+2524162.3578328Cl-117008074312484326300SO4--393035812976040COD15317357521TDS24900134011905094645500硬度1660031314839016463252016copyrightreservedDunwellGroup薄膜二级纳濾(NF)浓缩+产水反渗透（RO）进料液未经除硬脱硫废水，悬浮物沉淀處理稳定通量23LMH操作温度约45oC以下操作压力约40-50kg/cm2浓缩比60~65%平均清洗周期每月（视乎浓度）产水水质TDS1000~2000ppm2016copyrightreservedDunwellGroup应用案例•大唐国际克什克腾旗RO浓水提浓•陕煤神木天元化工直接浓缩2016copyrightreservedDunwellGroup=450m2处理量30m3/hr*浓缩比60~65%*平均清洗週期每月(視乎溶解物濃度)**数据只作参考，视乎实际进水情况2016copyrightreservedDunwellGroup振动膜运行和投资成本震动膜运行成本（吨）7kwh+￥7膜*设备投资（吨/时）￥*膜组寿命以3年为计算基础2016copyrightreservedDunwellGroup新的工藝•只需电耗–振动膜7kwh/m3–振动膜膜组损耗RMB7/m3–烟道蒸发RMB5/m3•平均低于RMB20/m32016copyrightreservedDunwellGroup效益•採用振动膜进行废水“零排放”•减少除硬化学品•减少固废外排量•减少蒸发能耗•减少设备投资•减少运行成本2016copyrightreservedDunwellGroup废油再生厂1969年成立1993年进入到环保工业2016copyrightreservedDunwellGroup谢谢