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首页> 外文期刊>Archives of Applied Science Research >Evaluation of lab scale constructed wetlands to treat the toddy distillery effluent with different aquatic plants
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Evaluation of lab scale constructed wetlands to treat the toddy distillery effluent with different aquatic plants

机译：评价实验室规模的人工湿地，以不同的水生植物处理酸洗酒厂的废水

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Effluent ‘Coda’ originating from palmyrah toddy distillery units is the major source of environmental pollution in the Jaffna district of Sri Lanka. Spent wash produced from distilleries is rich in organic material and characteristically less toxic. The study was aimed to assess the potentiality of constructed wetlands for treating of distillery spent wash in lab scale with various configurations treatments, before discharge to the land. Effluent was collected from Thikkam distillery in Jaffna. The effluent was diluted with groundwater as different series. The aquatic plants, Eichhormia sp, Lemna sp, Pistia sp and Lemna minor sp were selected. Constructed wet land was designed and fabricated in lab scale. Initial parameters of the effluent were measured. Samples from inlet and outlet of the artificial wetland were collected on two days interval for one week and analyzed for pH, BOD, COD, Turbidity, NO3 -, PO4 3-, TDS, and EC using standard methods with replicates with hydraulic retention time of 2, 4, and 6 days. Even diluted effluents were often above the permissible standards specified by the Central Environmental Authority for the discharge of industrial effluents into land. The aquatic plants Eichhormia sp, Lemna sp, Pistia sp and Lemna minor were used successfully to treat the spent wash .Complete death of Pistia was observed in dilution of five. Constructed wetlands were successfully removed TDS, nitrate, phosphorus, BOD, COD, turbidity, EC, and change the pH. The maximum removal rates of EC, TDS, COD, BOD, nitrate, and phosphate in constructed wetland were 50.14%, 48.42%, 45.5%, 56.3%, 35.3%, and 54% respectively. It was found constructed wetland shows highly significant removal efficiency of all tested components by Lemna minor . The hydraulic retention time of six days was showed the highest removal efficiency and maximum reduction rate of all the tested components. But hydraulic retention time of four days which is more possibility to keep, because the values of constituents of distillery waste are moreover reached the permissible standards specified by the CEA to discharge to land or irrigation
机译：源自帕尔米拉棕榈酒酿造厂的废水“柯达”是斯里兰卡贾夫纳区的主要环境污染源。蒸馏厂产生的废液含有丰富的有机物质，并且毒性较低。这项研究的目的是评估在将人工湿地排入土地之前，在实验室规模内采用各种配置处理方法来处理酿酒厂废洗液的潜力。废水从贾夫纳的提卡姆酿酒厂收集。用不同系列的地下水稀释废水。选择水生植物Eichhormia sp，Lemna sp，Pistia sp和Lemna minor sp。人工湿地是在实验室规模内设计和制造的。测量了流出物的初始参数。每隔两天从人工湿地的入口和出口采集样品，持续一周，并使用标准方法分析pH，BOD，COD，浊度，NO3-，PO4 3-，TDS和EC，水力保留时间重复一遍。 2、4和6天。甚至稀释后的废水也经常超过中央环境局规定的将工业废水排入土地的许可标准。成功地使用了水生Eichhormia sp，Lemna sp，Pistia sp和Lemna minor处理水洗液。稀释5倍后观察到Pistia完全死亡。人工湿地被成功去除TDS，硝酸盐，磷，BOD，COD，浊度，EC，并改变pH。人工湿地中EC，TDS，COD，BOD，硝酸盐和磷酸盐的最大去除率分别为50.14％，48.42％，45.5％，56.3％，35.3％和54％。发现人工湿地对Lemna minor的所有测试成分去除效率都非常高。在所有测试组件中，水力停留时间为六天，显示出最高的去除效率和最大的还原率。但是水力停留时间为四天，这更有可能保持，因为蒸馏酒废物成分的价值还达到了CEA规定的排放到土地或灌溉的许可标准

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