本文關(guān)鍵詞： 高礦化度礦井水 濃縮處理 蒸發(fā)結(jié)晶 礦井水零排放　出處：《煤炭科學(xué)技術(shù)》2017年11期 　論文類型：期刊論文

【摘要】：為了解決我國西部大型煤炭基地生產(chǎn)過程中面臨的水資源緊缺及高礦化度礦井水零排放難題,對(duì)礦井水零排放工藝系統(tǒng)中的凈化處理、深度處理、濃縮處理及蒸發(fā)結(jié)晶處理單元進(jìn)行了技術(shù)研究與工程應(yīng)用。結(jié)果表明,對(duì)于溶解性總固體TDS質(zhì)量濃度≤5 000 mg/L的礦井水凈化處理采用混凝澄清過濾工藝,深度處理采用苦咸水反滲透(BWRO)工藝,濃縮處理采用BWRO+碟管反滲透(DTRO)工藝,蒸發(fā)結(jié)晶采用多效蒸發(fā)(MED)工藝具有優(yōu)勢(shì)。采用上述工藝系統(tǒng)處理TDS質(zhì)量濃度為1 900~2 400 mg/L的礦井水,濃縮處理后高濃鹽水TDS質(zhì)量濃度≥90 000 mg/L,系統(tǒng)回收率≥96.5%,最終出水TDS質(zhì)量濃度≤300 mg/L;蒸發(fā)結(jié)晶單元分離出硫酸鈉和氯化鈉,滿足工業(yè)鹽標(biāo)準(zhǔn)要求,可作為化工原料利用;全系統(tǒng)綜合運(yùn)行費(fèi)用約為7.89元/t水;整個(gè)工藝運(yùn)行穩(wěn)定,對(duì)水質(zhì)變化耐受性好,處理效果佳。
[Abstract]:In order to solve the problem of water shortage and zero discharge of high salinity mine water in the production process of large coal base in western China, the purification and advanced treatment of zero discharge process system of mine water are carried out. The technical research and engineering application of concentration treatment and evaporative crystallization treatment unit have been carried out. The results show that. For mine water purification with dissolved total solid TDS concentration 鈮，

本文編號(hào)：1443966