Abstract：
Olive oil mill wastewater (OMW) is an environmental concern in olive oil producers\' regions due to its use in agricultural soils as an organic amendment. However, OMW can also be used as organic fertilizer due to their high organic matter and nutrient levels, but its use, when it occurs without environmental management, can cause serious environmental implications for soils and waters. This work evaluated the impact of different OMW levels on a set of physicochemical parameters from an agricultural vertisol where wheat grew (Triticum aestivum L var. Douma 1). A set of physicochemical parameters were conducted before adding different levels of OMW (0, 5, 10 and 15 L m-2) at two soil depths (0-30 and 30-60 cm) and for the two growing seasons to determine: i) the effect of OMW treatments on the studied physicochemical soil properties (bulk density, soil porosity, soil pH, electrical conductivity and organic matter), ii) available primary (N, P, K) and secondary macronutrients (Ca, Mg and Na), ii) micronutrients (Cu Fe, Mn and Zn), and iv) available heavy metals (Cd and Pb). The results indicated that soil physicochemical parameters were slightly improved, mainly due to improvement in organic matter, macro- and micronutrients, usually proportionally to the olive mill wastewater dose. Cadmium and Pb were within the permissible limits. The increased OMW had different behaviour on the soil nutritional balances of different elements, leading to nutrient imbalances, although in some cases, they were improved. However, the plant growth was not affected, and it was improved under 10 L m-2 and 15 L m-2 doses. The results offer valuable data about the use of OMW as organic fertilizer for crops and their potential impact on soil properties.
摘要：
橄榄油厂废水（OMW）是橄榄油生产商地区的环境问题，因为它在农业土壤中用作有机改良剂。然而,OMW也可以用作有机肥料，由于其高有机质和营养水平，但它的使用，当它在没有环境管理的情况下发生时，会对土壤和水域造成严重的环境影响。这项工作评估了不同OMW水平对小麦生长的农业Vertisol的一组物理化学参数的影响（TriticumaestivumLvar。杜马1）。在两个土壤深度（0-30和30-60cm）和两个生长季节添加不同水平的OMW（0、5、10和15Lm-2）之前，进行了一组物理化学参数，以确定：i）OMW处理对所研究的物理化学土壤性质（容重，土壤孔隙度，土壤pH值,电导率和有机物)，ii)可用主(N，P,K)和次要常量营养素(Ca，Mg和Na)，ii)微量营养素(CuFe，Mn和Zn)，和iv)可用重金属(Cd和Pb)。结果表明,土壤理化参数略有改善,主要是由于有机物的改善，大量和微量营养素，通常与橄榄厂废水剂量成比例。镉和铅在允许范围内。增加的OMW对不同元素的土壤营养平衡有不同的行为，导致营养失衡，虽然在某些情况下,他们得到了改善。然而,植物生长没有受到影响，在10Lm-2和15Lm-2剂量下有所改善。结果提供了有关使用OMW作为农作物有机肥料及其对土壤性质的潜在影响的有价值的数据。
