重金屬廢水及污泥處理 Heavy metals in waste water and sludge treatment
簡介 Summary
重金屬指比重大于4或5的金屬，約有45種，通常的重金屬污染，主要是指汞、鉛、鎘、鉻以及砷等生物毒性顯著的重金屬的環境污染，還包括具有一定毒性的重金屬如鋅、銅、鈷、鎳、錫、釩等。重金屬污染物難以治理，它們在水體中積累到一定的限度就會對水體一水生植物一水生動物系統產生嚴重危害，并可能通過食物鏈影響到人類的自身健康。在礦冶、機械制造、化工、電子、儀表等工業中的許多生產過程中都產生重金屬廢水，這些重金屬污染成為關系到人類健康和生命的重大環境問題。 | As a special waste landfill leachate, high concentrations of organic matter, high ammonia concentration, Shuizhi big change, Hou Qi poor biodegradability, the proportion of microbial imbalance, etc. Tedian Ying Yang elements, Yin Ci in the choice of La Ji leachate biological treatment process O'clock, Bixuxiangxi Ceding waste seepage filtrate of the various components of its characteristics in order to take corresponding countermeasures. After years of research and engineering practice, we developed a strong physical and chemical pretreatment + anaerobic + aerobic biological treatment process membrane treatment combinations, the treatment of landfill leachate has a good effect can adapt to all kinds of quality changes. |
技術特點 Technical Characteristics
重金屬廢水處理的方法大致可以分為三大類：(1)化學法；(2)物理處理法；(3)生物處理法。 化學法是目前國內外處理含重金屬廢水的主要方法。 與常規重金屬處理相比的特點 u 原水適應性強，可對不同重金屬進行處理。 u 在重金屬廢水處理工藝中，采用高效絡合劑反應技術，可脫除廢水中99%以上的重金屬。 u 采用先進的重金屬晶化處理技術，對廢水分離出的絡合污泥中重金屬離子進行晶化反應，使排出的重金屬離子完全穩定固化，不產生重金屬再溶性二次污染。 u 操作管理方便，全程自動化。 | Heavy metal wastewater treatment methods can be roughly divided into three categories: (1) chemical method; (2) physical treatment; (3) biological treatment. Characteristics compared with conventional heavy metal processing u Adaptability of raw water, Treatment of different heavy metals u Heavy metals in the wastewater treatment process, efficient complexing agent reaction to the removal of more than 99% of the heavy metals in the wastewaters. u Using advanced processing technology of heavy metal crystallization, crystallization reaction of heavy metal ion complexation sludge wastewater separation, the discharge of heavy metal ions completely stable curing, does not produce the heavy metal re-insoluble secondary pollution u Convenience of operation, full automation.
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