【正文】 余焦油等含量偏高，活性污泥微生物難以馴養(yǎng)，導致生化處理工藝正常運轉比較困難 [3]。對有效利用煤炭資源以保障國家建設和 減少焦化廢水的排放危害、使經(jīng)濟、環(huán)境可持續(xù)發(fā)展都具有重要意義。 而選煤工藝中需要耗用大量的水資源，在水資源日益缺乏的現(xiàn)今時代，能節(jié)約用水既是保護環(huán)境之舉又有明顯經(jīng)濟效益。[1] 另一方面， 我國是一個富煤、貧油、缺天然氣的國家。焦化行業(yè)廢水排放量占到全省相應排放總量的 30%以上 ,焦化工業(yè)成為山西環(huán)境污染最嚴重的行業(yè)之一。s coke trade, and China has bee world coke production, consumption and trade superpower. Coking wastewater is theprocess of coal carbonization at high temperature and gas purification, chemical products formed during the waste water purification, water quality, position and coking coal with the change process is a typical refractory anic wastewater. They may contain tar, phenol, cyanide, ammonia and a large number of anic pounds, their plex position, toxicity, and its excessive emissions on humans, aquatic products, crops can be a great harm. Preparation of the need to rely on large amounts of water, and therefore the study can be applied to coking coal preparation waste water is imperative that we tested an important issue. This paper, with coal chess in 1L flotation cell flotation of different doses of diesel oil and foaming agent , study the coal flotation effect of using water and wastewater . The results showed that pared with the effect of water Coal, coking wastewater after use, can significantly enhanced the yield of clean coal, coal ash is enhanced tail can be used for coking coal preparation waste water production. Coal coking wastewater experiments, the best pharmaceutical system as foaming agents and collector of 1L slurry. Keywords: wastewater， coal preparation plant， floatatinon, floatation agent 內蒙古科技大學畢業(yè)論文 III 目錄 摘 要 ......................................................................................................................................................................I ABSTRACT .......................................................................................................................................................... II 目錄 ...................................................................................................................................................................... III 緒 論 ....................................................................................................................................................................... 1 焦化廢水在選煤廠的應用研究 ............................................................................................................................. 2 第一章 文獻 綜述及選題背景 ............................................................................................................................... 2 焦化廢水的主要來源 ................................................................................................................................. 2 焦化廢水的主要成分 ................................................................................................................................. 2 焦化工業(yè)廢水的危害 ............................................................................................................................... 2 焦化廢水的處理方法與發(fā)展 ..................................................................................................................... 3 焦化廢水處理工藝的發(fā)展歷程 ......................................................................................................... 3 活性污泥法 ......................................................................................................................................... 3 生物膜法 ............................................................................................................................................. 5 膜分離 .................................................................................................................................................. 6 煤的浮選工藝 ............................................................................................................................................. 8 浮選法 .................................................................................................................................................. 8 浮選工藝流程 .................................................................................................................................... 11 煤的可浮性 ........................................................................................................................................ 12 選題背景及研究目的 ................................................................................................................................ 13 選題背景 ........................................................................................................................................... 13 研究內容 ............................................................................................................................................ 13 第二章 試驗與分析 ............................................................................................................................................. 15 試驗流程 ................................................................................................................................................... 15 試驗所用儀器設備 ................................................................................................................................... 16 試驗所用浮選藥劑 .................................................................................................................................... 16 內蒙古科技大學畢業(yè)論文 IV 浮選試驗方法 ............................................................................................................................................ 17 浮選試驗選擇藥劑制度的試驗條件 ........................................................................................................ 18 第三章 自來水、焦化廢水選煤效果的的考察 ................................................................................................. 20 煤樣分析 .....................................