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class="NyNewsdetail_title">反滲透RO膜結(jié)垢后的化學清洗操作方法？</h1> <div id="35hf15jpnp" class="NyNewsdetail_tips">更新時間：2021-01-30 點擊次數(shù)：2664</div> <div id="35hf15jpnp" class="NyNewsdetail_con"> <div style="margin: 10px 0px 0px; padding: 0px; box-sizing: border-box; font-size: 16px; line-height: 26px; color: rgb(102, 102, 102); font-family: 微軟雅黑;"><span style="margin: 0px; padding: 0px; box-sizing: border-box; font-size: 14px;"><span style="margin: 0px; padding: 0px; box-sizing: border-box; font-family: 新宋體;"> 在</span></span><strong><span style="font-size:14px;">反滲透RO膜</span></strong><span style="margin: 0px; padding: 0px; box-sizing: border-box; font-size: 14px;"><span style="margin: 0px; padding: 0px; box-sizing: border-box; font-family: 新宋體;">應用的過程中，總會不可避免的受到水中懸浮物和難溶鹽的污染，導致碳酸鈣等物質(zhì)沉淀。這其中就包括碳酸鈣垢、硫酸鈣、硫酸鋇、硫酸鍶垢、磷酸鈣垢、聚合硅垢、膠體污染、微生物沉積。今天我們分享的是<strong>反滲透膜</strong>結(jié)垢后的化學清洗操作方法，具體如下：</span></span></div><div style="margin: 10px 0px 0px; padding: 0px; box-sizing: border-box; font-size: 16px; line-height: 26px; color: rgb(102, 102, 102); font-family: 微軟雅黑;"><span style="margin: 0px; padding: 0px; box-sizing: border-box; font-size: 14px;"><span style="margin: 0px; padding: 0px; box-sizing: border-box; font-family: 新宋體;"> (1)在4Bar(60Psi)或更低壓力條件下進行低壓沖洗，即從清洗水箱中(或合適的水源)向壓力容器中泵入清潔水并排放幾分鐘。沖洗水必須是潔凈的、去除硬度、不含過渡金屬(Fe、Mn等)和余氯的RO產(chǎn)品水或去離子水。</span></span></div><div style="margin: 10px 0px 0px; padding: 0px; box-sizing: border-box; font-size: 16px; line-height: 26px; color: rgb(102, 102, 102); font-family: 微軟雅黑; text-align: center;"><span style="margin: 0px; padding: 0px; box-sizing: border-box; font-size: 14px;"><span style="margin: 0px; padding: 0px; box-sizing: border-box; font-family: 新宋體;"><img alt="反滲透RO膜" src="https://img80.chem17.com/9/20210130/637475934207616185889.jpg" style="margin: 0px; padding: 0px; box-sizing: border-box; border: 0px; width: 504px; height: 315px;" /></span></span></div><div style="margin: 10px 0px 0px; padding: 0px; box-sizing: border-box; font-size: 16px; line-height: 26px; color: rgb(102, 102, 102); font-family: 微軟雅黑;"><span style="margin: 0px; padding: 0px; box-sizing: border-box; font-size: 14px;"><span style="margin: 0px; padding: 0px; box-sizing: border-box; font-family: 新宋體;"> (2)在清洗水箱中配制的清洗溶液。配制用水必須是去除硬度、不含過渡金屬和余氯的RO產(chǎn)品水或去離子水。將清洗液的溫度和pH應調(diào)到所要求的值。</span></span></div><div style="margin: 10px 0px 0px; padding: 0px; box-sizing: border-box; font-size: 16px; line-height: 26px; color: rgb(102, 102, 102); font-family: 微軟雅黑;"><span style="margin: 0px; padding: 0px; box-sizing: border-box; font-size: 14px;"><span style="margin: 0px; padding: 0px; box-sizing: border-box; font-family: 新宋體;"> (3)啟動清洗泵將清洗液泵入膜組件內(nèi)，循環(huán)清洗約1小時或是要求的時間。在初始階段，在清洗液返回至R0清洗水箱之前，應將回流液排放掉，以免系統(tǒng)內(nèi)滯留的水稀釋清洗溶液。在化學藥劑與RO裝置接觸后，裝置內(nèi)的污染物在化學反應的作用下會被大量沖出，為了避免污染清洗液，這些清洗液也應該被排放掉，直至清洗液顏色轉(zhuǎn)淡再進入循環(huán)淸洗。在循環(huán)清洗后，緩慢地將流速調(diào)節(jié)到大清洗流速的1/3，并在第二個5分鐘內(nèi)，增加流速至設計流速的2/3，再增加流速至大清洗流速值。如果需要，當p的變化大于0.5，就要重新添加藥品調(diào)整pH值。</span></span></div><div style="margin: 10px 0px 0px; padding: 0px; box-sizing: border-box; font-size: 16px; line-height: 26px; color: rgb(102, 102, 102); font-family: 微軟雅黑; text-align: center;"><span style="margin: 0px; padding: 0px; box-sizing: border-box; font-size: 14px;"><span style="margin: 0px; padding: 0px; box-sizing: border-box; font-family: 新宋體;"><img alt="反滲透RO膜" src="https://img77.chem17.com/9/20210130/637475934435876395198.jpg" style="margin: 0px; padding: 0px; box-sizing: border-box; border: 0px; width: 505px; height: 316px;" /></span></span></div><div style="margin: 10px 0px 0px; padding: 0px; box-sizing: border-box; font-size: 16px; line-height: 26px; color: rgb(102, 102, 102); font-family: 微軟雅黑;"><span style="margin: 0px; padding: 0px; box-sizing: border-box; font-size: 14px;"><span style="margin: 0px; padding: 0px; box-sizing: border-box; font-family: 新宋體;"> (4)根據(jù)需要可交替采用循環(huán)清洗和浸泡程序。浸泡時間可根據(jù)制造商的建議選擇1至8小時。在整個清洗過程中要謹慎地保持合適的溫度和pH值。</span></span></div><div style="margin: 10px 0px 0px; padding: 0px; box-sizing: border-box; font-size: 16px; line-height: 26px; color: rgb(102, 102, 102); font-family: 微軟雅黑;"><span style="margin: 0px; padding: 0px; box-sizing: border-box; font-size: 14px;"><span style="margin: 0px; padding: 0px; box-sizing: border-box; font-family: 新宋體;"> (5)化學清洗結(jié)束后，要用清潔水進行低壓沖洗，從清洗裝置及相關(guān)管路中沖洗殘留化學藥劑，排放并沖洗清洗水箱，然后再用清潔水*注滿清洗水箱。從清洗水箱中泵入所有的沖洗水沖洗壓力容器并排放。直至<strong>RO裝置</strong>內(nèi)的殘留化學藥品基本被清除。</span></span></div><div style="margin: 10px 0px 0px; padding: 0px; box-sizing: border-box; font-size: 16px; line-height: 26px; color: rgb(102, 102, 102); font-family: 微軟雅黑;"><span style="margin: 0px; padding: 0px; box-sizing: border-box; font-size: 14px;"><span style="margin: 0px; padding: 0px; box-sizing: border-box; font-family: 新宋體;"> (6)采用清潔水*沖洗后，就可用預處理給水進行終的低壓沖洗。給水壓力應低于4bar，終沖洗持續(xù)進行直至沖洗水干浄，且不含任何泡沫和清洗劑殘余物。通常這需要15-60分鐘。操作人員可用干凈的燒瓶取樣，搖勻，監(jiān)測排放口處沖洗水中洗滌劑和泡沫的殘留情況。洗液的去除情況可用測試電導的方法進行，如沖洗水至排放出水的電導在給水電導的10-20%以內(nèi)，可認為沖洗已接近終點，p表也可用于測定沖洗水與排放水的pH值是否接近。</span></span></div><p style="margin: 10px 0px; padding: 0px; box-sizing: border-box; word-spacing: -1.5px; font-size: 16px; line-height: 26px; color: rgb(102, 102, 102); font-family: 微軟雅黑;"><span style="margin: 0px; padding: 0px; box-sizing: border-box; font-family: 新宋體; font-size: 14px;"> </span><span style="margin: 0px; padding: 0px; box-sizing: border-box; font-size: 14px;"><span style="margin: 0px; padding: 0px; box-sizing: border-box; font-family: 新宋體;">需要注意的是，低壓沖洗結(jié)束后，RO裝置可以重新開始運行，但初始的產(chǎn)品水要進行排放并監(jiān)測，直至RO產(chǎn)水可滿足工藝要求(電導、p值等)。這一段恢復時間有時需要從幾小時到幾天，才得到穩(wěn)定的RO產(chǎn)水水質(zhì)，尤其是在經(jīng)過高pH清洗后。</span></span></p> </div> <div 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