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首页> 外文期刊>Cogent Environmental Science >Reduction of pollution load of paper mill effluent by phytoremediation technique using water caltrop (Trapa natans L.)
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Reduction of pollution load of paper mill effluent by phytoremediation technique using water caltrop (Trapa natans L.)

机译:利用水菱角的植物修复技术减少造纸厂废水的污染负荷

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Laboratory experiments were conducted to investigate the reduction of pollution load of paper mill effluent through phytoremediation technique using water caltrop (Trapa natans ). Different concentrations, viz. 0% (control), 25, 50, 75, and 100% (absolute) were treated using T. natans for 60?days. Results showed that sewage effluent was loaded with various parameters, viz. total dissolved solids (TDS), electrical conductivity, total Kjeldhal nitrogen (TKN), phosphate ( PO 4 3 - ), calcium (Ca~(2+)), magnesium (Mg~(2+)), potassium (K~(+)), cadmium (Cd), copper (Cu), iron (Fe), nickel (Ni), lead (Pb), and zinc (Zn). The maximum removal of different parameters was recorded after 60?days of phytoremediation experiments. Water caltrop (T. natans ) significantly (p ??0.05/p ??0.01) removed TDS, BOD, COD, TKN, PO 4 3 - , Ca~(2+), Mg~(2+) and K~(+), Cd, Cu, Fe, Ni, Pb, and Zn of the paper mill effluent after the phytoremediation. The removal of different pollutants from the paper mill effluent was gradually increased at lower concentration i.e. (from 20 to 50%) concentrations of the paper mill effluent. The maximum fresh weight, dry weight, and LAI of T. natans were observed with 50% concentration of the paper mill effluent at 45?days of phytoremediation experiments. Therefore, T. natans can be used for the treatment of paper mill effluent up to 50% concentration for 60?days using phytoremediation technique.
机译:进行了室内实验,以研究利用菱角(Trapa natans)的植物修复技术减少造纸厂废水的污染负荷。不同的浓度,即。使用iT处理0%(对照),25、50、75和100%(绝对)。纳坦60天。结果表明,污水中装有各种参数,即。总溶解固体(TDS),电导率,总凯氏氮(TKN),磷酸盐(PO 4 3-),钙(Ca〜(2+)),镁(Mg〜(2+)),钾(K〜( +)),镉(Cd),铜(Cu),铁(Fe),镍(Ni),铅(Pb)和锌(Zn)。在植物修复实验60天后记录了不同参数的最大去除量。菱角(t。natans)显着(i p≤0.05/ i p≤0.01)去除了TDS,BOD,COD,TKN,PO 4 3-,Ca〜(2+)植物修复后的废水中的Mg〜(2+)和K〜(+),Cd,Cu,Fe,Ni,Pb和Zn。造纸厂废水中不同污染物的去除率在较低浓度下(即造纸厂废水浓度从20%到50%)逐渐增加。 T的最大鲜重,干重和LAI。在45天的植物修复实验中,观察到纳坦素的浓度为50%造纸厂废水。因此, T。利用植物修复技术,natans可用于处理高达50%浓度的造纸废水,持续60天。

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