山西某煤礦污水處理設備工程案例分析:
工藝流程
生產廢水---調節池---初沉池---玻璃污水處理設備 ---回用水池
該系統采用PLC控制,減少人為干預因素。設備故障率降到較低,**了生產設備的連續運行。
操作簡單:該設備采用一體化控制系統,避免了異地作業的發生,操作簡單方便。
本系統出水濁度<1NTU,懸浮物<30mg/l,色度<30倍。完全滿足生產用水的要求,感官可與自來水相媲美。
比中國的能源結構中煤炭占70%。煤礦開采過程中排放大量的廢水。如果不經處理直接排放,會對環境造成嚴重污染,同時造成大量的水資源浪費。
煤礦廢水是復雜的,在同一礦山廢水中含有鐵、錳等重金屬、硫、氟、氯等非金屬和有機污染物和懸浮固體,有些礦山廢水的酸性較弱,即使是同一礦山,不同性質的廢水也不同,甚至較不相同。這給煤礦廢水處理技術的選擇帶來了很大的困難。
煤礦污水處理的設計要比活性污泥法好。由于污水中有機物含量較低,微生物在運行過程中不能得到較低的營養物質,不能形成活性污泥,不能正常運行。氧化溝廢水處理工藝也存在同樣的問題。回流活性污泥不能回流,使原有的氧化溝系統成為帶狀曝氣平板沉淀池,不能達到所要求的處理目標。許多礦山采用了兩段生物接觸氧化工藝處理煤礦生活污水,效果非常好。該技術的特點是能適應礦區污水濃度低、變化大的特點。同時,投資、運行、維護也比活性污泥法簡單,但對脫氮除磷效果不佳。廢水生物處理新技術、新技術的研究、開發和應用取得了很大成就。許多新技術應運而生。這些新工藝的共同特點是:高效、穩定、節能、脫氮除磷等多功能。
The design of the *age treatment in coal mine is better than that of the activated sludge process. Because of the low organic matter content in the *age, the microorganism can not get the lowest nutriment during operation, and can't form activated sludge, so it can't run normally. There are also the same problems in the treatment process of oxidation ditch wastewater. The reflux activated sludge can not be reflued and the original oxidation ditch system becomes a strip aerated flat sedimentation tank, which can not reach the required treatment target. Many mines have adopted two stages of biological contact oxidation process to treat coal mine domestic *age, and the effect is very good. The characteristic of this technology is that it can adapt to the low concentration of *age and big change in the mining area. At the same time, investment, operation and maintenance are also simpler than activated sludge process, but the effect of nitrogen and phosphorus removal is not good. Great achievements have been made in the research, development and application of new technology and new technology of wastewater biological treatment. Many new technologies have come into being. The common features of these new processes are: high efficiency, stability, energy saving, nitrogen and phosphorus removal and other functions.