Study of Pollution Load in Effluents of Paper Mills and Its Control by the Recycling Of Sundry Plants in Hayatabad Industrial Estate, Peshawar.

Journal of Engineering and Applied Sciences , University of Engineering and Technology, Peshawar Pub Date : 2016-12-31 DOI:10.25211/JEAS.V35I2.106

N. Khan, M. Nafees, A. Bashir, F. Ahmad

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Abstract

This study was initiated to explore the concept of recycling of effluents of paper industry in Hayatabad Industrial Estate. The objective of this study was to reduce pollution load of paper and pulp effluents via recycling in sundry plants to make it fit for aquatic biota. For this purpose a detail study was conducted at paper mills and sundry plants at Hayatabad Industrial Estate. These plants were examined for operation and were sampled for waste water. Total 7 waste water samples were collected from selected points of paper mills, industrial drain and sundry plants. Samples were analyzed for various physio-chemical characteristics (colour, pH, EC, Alkalinity, Turbidity, TDS, TSS, COD and BOD 5 ) by adopting standard methods for the examination of water and waste water. These samples were also investigated for heavy metals through atomic absorption spectrophotometer. The obtained results were compared with Pak-NEQS for industrial effluents. Results showed high limits of pH(9-9.3), EC(738-850uS/cm), Alkalinity(463-581mg/l), Turbidity(166-180 NTU), TSS(5100-5300mg/l), TDS(3900-4200mg/l), BOD 5 (350-390mg/l) and COD (510-532mg/l) in effluents of paper mills. Among heavy metals Cd, Cr and Pd were observed above Pak-NEQS for industrial discharges in the range of 1-3, 3.2-5.1 and 1.01-2.3mg/l respectively. These effluents were recycled in sundry plants in manufacturing of paper board/gatta. Analysis of recycled water reduced levels of analyzed parameters upto low limits as pH (7.1-7.4), EC(336-345uS/cm), Alkalinity(425-580mg/l), Turbidity(140-154 NTU), TDS(1900-1970mg/l), TSS(2000-2100mg/l), COD(176-190mg/l), BOD 5 (95-110mg/l). It was observed that huge quantity of water is generating from paper mills and its direct discharge into receiving water is an emerging concern. Therefore it is recommended to enhance the installation of sundry plants in proposed industrial estate.

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白沙瓦哈亚塔巴德工业区造纸厂废水污染负荷及杂物厂回收控制研究。

本研究旨在探讨哈亚塔巴德工业区造纸废水的循环利用概念。本研究的目的是通过在杂货厂回收造纸和纸浆废水来减少污染负荷，使其适合水生生物群。为此目的，在哈亚塔巴德工业区的造纸厂和杂物厂进行了详细的研究。对这些工厂进行了运行检查，并对废水进行了取样。从造纸厂、工业排水管和杂货厂的选定地点收集了7份废水样本。采用标准的水和废水检测方法，分析样品的各种理化特性(颜色、pH、EC、碱度、浊度、TDS、TSS、COD和BOD 5)。并用原子吸收分光光度计测定了样品中的重金属含量。将所得结果与工业废水的Pak-NEQS进行了比较。结果表明:造纸厂出水pH(9 ~ 9.3)、EC(738 ~ 850us /cm)、碱度(463 ~ 581mg/l)、浊度(166 ~ 180ntu)、TSS(5100 ~ 5300mg/l)、TDS(3900 ~ 4200mg/l)、BOD 5 (350 ~ 390mg/l)、COD (510 ~ 532mg/l)均为高限值。工业排放中重金属Cd、Cr、Pd分别在1 ~ 3、3.2 ~ 5.1和1.01 ~ 2.3mg/l范围内高于Pak-NEQS。这些废水被回收利用在杂货厂生产纸板/纸板。对循环水的分析将分析参数的水平降低到最低限度，包括pH(7.01 -7.4)、EC(336-345uS/cm)、碱度(425-580mg/l)、浊度(140-154 NTU)、TDS(1900-1970mg/l)、TSS(2000-2100mg/l)、COD(176-190mg/l)、BOD 5 (95-110mg/l)。据观察，造纸厂正在产生大量的水，其直接排放到接收水是一个新出现的问题。因此，建议在拟建的工业小区中加强杂物厂的安装。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Journal of Engineering and Applied Sciences , University of Engineering and Technology, Peshawar

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