A research on Treating and Recycling Wastewater from Mine Tunnels at 790 Coal Mine, MTV 790 Ltd. Company

Modern Environmental Science and Engineering Pub Date : 2017-06-03 DOI:10.15341/mese(2333-2581)/06.03.2017/008

Dang XuanThuong, Do ThiLan, Nguyen Mai Hoa

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Abstract

Large amount of water is used and wastewater is created in coal mining industry. Coal mining wastewater treatment by reusing it for production and domestic purposes is then essential. Coal pit No 790 of Dong Bac Coal Corporation locates in the area of Mong Duong district, Quang Ninh province. Wastewater after treatment is within the limitation specified in the column B in QCVN 40:2011/BTNMT on industrial wastewater. The process effectiveness of treating turbidity, iron and Mn reaches the maximum level of83%, 30% and 40% (after Arkal filtering disc); 88%, 71% and 87% (after Media Filter); and 57%, 78% and 84% (after UF membrane filter) respectively.Those above indicators have met regulations for domestic water under QCVN 01:2009/BYT. However, the Coliform has insignificantly decreased after treating by Arkal filter which are hundreds to thousands of CFU/100ml. The amount of Coliform have decreased to 12 ÷ 51 CFU/100ml (after Media Filter) and from 1 to 18 CFU/100 ml (after through UF), respectively. The wastewate has been required for further treatment for purpose of domestic water supplying for workers and local people.

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MTV 790公司790煤矿巷道污水处理与回用研究公司

煤矿工业用水量大，产生废水多。因此，通过将煤矿废水重新用于生产和生活目的来处理煤矿废水至关重要。东北煤业公司790号煤矿位于广宁省旺阳区。处理后的废水在QCVN 40:2011/BTNMT关于工业废水的B栏规定的限制范围内。处理浊度、铁、锰的工艺效率最高可达83%、30%、40% (Arkal过滤盘后);88%， 71%和87% (Media Filter后);经UF膜过滤后分别为57%、78%、84%。以上指标均符合QCVN 01:09 /BYT生活用水标准。而经Arkal滤池处理后，大肠菌群的减少幅度不明显，为数百~数千CFU/100ml。大肠菌群的数量分别从培养基过滤后的12 ÷ 51 CFU/100ml和UF过滤后的1到18 CFU/100ml。废水需要进一步处理，以供工人和当地居民生活用水。

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Modern Environmental Science and Engineering

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0.30

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