LR Valorization of Non-Conventional Waters, LR16INRGREF02, National Research Institute of Rural Engineering, Water and Forestry, University of Carthage, Rue Hédi Karray, BP N 10, 2080, Ariana, Tunisia.
Federal Research Centre for Cultivated Plants, Institute for Crop and Soil Science (JKI-PB), Julius Kühn-Institut, Brunswick, Germany.
Environ Sci Pollut Res Int. 2023 Sep;30(43):97700-97711. doi: 10.1007/s11356-023-29279-x. Epub 2023 Aug 19.
A field experiment was conducted investigating the possibility of using treated wastewater (TWW) on sites affected by water scarcity in summer, waterlogging during the wet season, and salinity. A corresponding pot experiment was conducted comparable to the field experiment in Kalaât Landelous. The same plant species (Atriplex nummularia Lindl., Eucalyptus gomphocephala DC., Acacia cyanophylla Lindl., Casuarina glauca Sieber ex Spreng., Cupressus sempervirens L., and Pinus halepensis Mill.) were grown with the same treatments. While, in the field the plants, elemental composition cannot be linked to inputs by TWW, this was studied under controlled conditions. Additionally, a control was established lower in salinity receiving tap water. The effect of TWW irrigation on macro- and microelement uptake by the six plant species was studied. The treatments were high soil salinity under drained saline (DS) conditions, high salinity under waterlogged saline (WS), and a drained non-saline control (DNS: EC = 3.0 dS/m, pH = 8.4). TWW application under DS treatment increased Na, Cl, Ca, Mg, N, P, and K in most plant tissues compared to the control. TWW application in WS treatment resulted in an increase in heavy metals. Cu and Zn showed the highest bioaccumulation factor (BAF). The BAF in different plant tissues followed the order: Cu > Zn > Mn > Cd > Ni > Co > Pb. The plants accumulated significant amounts of metals in their roots.
进行了一项田间试验，以研究在夏季缺水、雨季积水和盐分影响的地点使用处理后废水（TWW）的可能性。在 Kalaât Landelous 进行了相应的盆栽试验，与田间试验相当。种植了相同的植物物种（Atriplex nummularia Lindl.、Eucalyptus gomphocephala DC.、Acacia cyanophylla Lindl.、Casuarina glauca Sieber ex Spreng.、Cupressus sempervirens L.和 Pinus halepensis Mill.），并进行了相同的处理。然而，在田间，植物的元素组成无法与 TWW 的投入联系起来，但在受控条件下进行了研究。此外，还建立了一个盐分较低的对照，接收自来水。研究了 TWW 灌溉对六种植物吸收大量和微量元素的影响。处理方法是在排水咸水（DS）条件下的高土壤盐分、积水咸水（WS）下的高盐分和排水非盐水对照（DNS：EC = 3.0 dS/m，pH = 8.4）。与对照相比，DS 处理下的 TWW 应用增加了大多数植物组织中的 Na、Cl、Ca、Mg、N、P 和 K。WS 处理下的 TWW 应用导致重金属增加。Cu 和 Zn 表现出最高的生物积累因子（BAF）。不同植物组织中的 BAF 顺序为：Cu > Zn > Mn > Cd > Ni > Co > Pb。植物在根部积累了大量的金属。
