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<div id="3tzm5vv4jmr" class="NyNewsdetail_tips">更新時(shí)間：2022-09-29 點(diǎn)擊次數(shù)：1867</div> <div id="3tzm5vv4jmr" class="NyNewsdetail_con"> <p><span>今年，國家生態(tài)環(huán)境部印發(fā)了《長江“三磷"專項(xiàng)排查整治行動(dòng)實(shí)施方案》，針對長江流域磷礦、磷肥、含磷農(nóng)藥、黃磷和磷石膏庫5類污染，組織長江經(jīng)濟(jì)帶7省(市)開展為期兩年的“三磷"專項(xiàng)排查整治工作，以解決“三磷"造成的水環(huán)境等生態(tài)環(huán)境突出問題，實(shí)現(xiàn)“三個(gè)一批"整治目標(biāo)。</span></p><p><span><br/></span></p><p><span>　　那么你了解磷嗎?知道廢水中都有哪些磷嗎?知道各種磷怎么處理嗎?知道“三磷"會(huì)給廢水帶來哪些污染嗎?</span></p><p><span><br/></span></p><p><span>　　什么是總磷，有機(jī)磷，無機(jī)磷?</span></p><p><span><br/></span></p><p><span>　　總磷，顧名思義就是所有磷的總和，是水樣經(jīng)過消解后，將各種形態(tài)的磷轉(zhuǎn)化為正磷酸鹽后測定的結(jié)果，是所有有機(jī)態(tài)和無機(jī)態(tài)磷的總和。</span></p><p><span><br/></span></p><p><span>　　有機(jī)磷指含有C-P鍵的有機(jī)化合物，有機(jī)磷化學(xué)即是研究有機(jī)磷化合物性質(zhì)和反應(yīng)的有機(jī)化學(xué)分支。除了滿足很多生物用來合成自身能量的所需外(ATP)，還用來制作有機(jī)磷農(nóng)藥，用于防治植物病、蟲、草害等，對人體也有很大的危害性。</span></p><p><span><br/></span></p><p><span>　　其涉及行業(yè)主要包括農(nóng)藥廢水，化肥廢水及部分石油化工廢水等。</span></p><p><span><br/></span></p><p><span>　　無機(jī)磷是我們生活中常見的，主要是以無機(jī)化合物的形式存在的磷，包括正磷酸鹽，偏磷酸鹽</span>，磷酸氫鹽，磷酸二氫鹽，以及聚合磷酸鹽等等。無機(jī)磷大量排入自然水體中，是造成水體富營養(yǎng)化的主要原因。</p><p><span><br/></span></p><p><span>　　其主要涉及行業(yè)有市政行業(yè)，食品行業(yè)，電鍍行業(yè)等。</span></p><p><span><br/></span></p><p><span>　　含磷廢水如何進(jìn)行處理呢?</span></p><p><span><br/></span></p><p><span>　　在處理磷的過程中，我們面對不同行業(yè)的廢水時(shí)，針對磷的類型，常常采用不同的方法和不同類型的除磷劑。</span></p><p><span><br/></span></p><p><span>　　案例一、城鎮(zhèn)污水除磷</span></p><p><span><br/></span></p><p><span>　　佛山某市政污水廠，污水主要來源于該區(qū)域的居民生活所用水。設(shè)計(jì)水量5萬m3/d，實(shí)際運(yùn)行4.5萬m3/d，設(shè)計(jì)工藝為AAO+二沉池+紫外殺菌，出水總磷在1mg/L左右，客戶排放標(biāo)準(zhǔn)總磷低于0.5mg/L。針對客戶的生化出水用除磷劑做3個(gè)梯度的小試，根據(jù)結(jié)果可以得出，除磷劑投加量為30ppm時(shí)，能將總磷降到0.5mg/L以下，滿足客戶的排放標(biāo)準(zhǔn)。(總磷檢測儀器：MI-70S 智能型總磷檢測儀 )</span></p><p><span><br/></span></p><p><span>　　案例二、電鍍廢水除磷</span></p><p><span><br/></span></p><p><span>　　江門某電鍍廠，該客戶以電鍍鎳為主，硫酸鎳、檸檬酸鹽和亞磷酸鹽等。</span></p><p><span><br/></span></p><p><span>　　水廠日處理500m3/d，設(shè)計(jì)工藝為芬頓反應(yīng)+混凝反應(yīng)+沉淀池，該客戶原水總磷在約20mg/L，正磷酸鹽約為3mg/L。</span></p><p><span><br/></span></p><p><span>　　針對這類客戶，我們通常使用芬頓反應(yīng)將</span>、亞磷酸鹽等低價(jià)磷轉(zhuǎn)化為正磷酸鹽，再加入除磷劑處理?？偭讬z測儀檢測出終沉淀池出水總磷低于0.5mg/L，同時(shí)用鎳檢測儀檢測出鎳含量也低于0.5mg/L。實(shí)現(xiàn)穩(wěn)定達(dá)標(biāo)排放。</p><p><span><br/></span></p><p><span>　　案例三、制藥廢水除磷</span></p><p><span><br/></span></p><p><span>　　湖北某生物科技公司，專業(yè)生產(chǎn)農(nóng)藥藥劑，廢水總磷含量約50mg/L，總磷排放標(biāo)準(zhǔn)為<8mg/L，每天處理水量為200m3/d，設(shè)計(jì)工藝：芬頓+混凝反應(yīng)+沉淀池。</span></p><p><span><br/></span></p><p><span>　　制定除磷方案，使用硫酸亞鐵藥劑，優(yōu)化處理工藝，該出水總磷在2mg/L左右。</span></p><p><span><br/></span></p><p><span>　　針對于無機(jī)磷的廢水，有多種型號除磷劑可供選擇，而針對高濃度有機(jī)磷的廢水，目前仍是水處理行業(yè)的一個(gè)難題，須配制特定的工藝有針對性的處理。</span></p><p><br/></p> </div> <div id="3tzm5vv4jmr" class="ly_PrevNext"> <ul> 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