Research Unit VEG-i-TEC, Department of Food Technology, Safety and Health, Faculty of Bioscience Engineering, Ghent University, Campus Kortrijk, Graaf Karel de Goedelaan 5, 8500, Kortrijk, Belgium.
Laboratory of Crop Protection Chemistry, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000, Gent, Belgium.
Chemosphere. 2021 Oct;280:130619. doi: 10.1016/j.chemosphere.2021.130619. Epub 2021 Apr 22.
Pesticides are broadly utilized in crop cultivation and could end up in wastewater of vegetable- and potato companies during water-consuming processing steps. To gain insight into the presence of pesticide residues in (waste)water of these industries, water was analysed and monitored from three vegetable- and two potato processing companies in Belgium. During one year samples were collected of water before and after primary/secondary treatment (i.e. influent and effluent) and after tertiary treatment. Next to water, also (processed) carrot and potato products were analysed. Results show that boscalid (maximum: 18.32 μg/L) and terbuthylazine (maximum: 87.99 μg/L) are predominantly present in the vegetable industry and chlorpropham (maximum: 8.80×10 μg/L) and terbuthylazine (maximum: 3.37×10 μg/L) in the potato industry. The conventional treatment techniques seem to be insufficient for the removal of pesticides. Concentrations were even higher in the effluent than in the influent. Also, tertiary treatment techniques as ultra-filtration and reverse osmosis fail to reduce all pesticides below the European potable water limit of 0.1 μg/L. To meet this standard, the development and validation of new removal techniques are essential. Regarding product samples, almost no pesticide residues exceeded the MRL. Chlorpropham concentrations were statistically confirmed to be higher in potatoes and wastewater sampled when stored potatoes are processed.
农药在农作物种植中广泛使用，在蔬菜和土豆加工企业的耗水加工过程中，可能最终会进入废水。为了深入了解这些行业废水中农药残留的情况，对比利时三家蔬菜加工企业和两家土豆加工企业的废水进行了分析和监测。在一年的时间里，采集了初级/二级处理（即进水和出水）前后以及三级处理后的水样。除了水之外，还对（加工）胡萝卜和土豆产品进行了分析。结果表明，在蔬菜加工业中，主要存在的农药是肟菌酯（最高浓度：18.32μg/L）和特丁津（最高浓度：87.99μg/L），而在土豆加工业中，主要存在的农药是氯苯胺灵（最高浓度：8.80×10μg/L）和特丁津（最高浓度：3.37×10μg/L）。传统的处理技术似乎不足以去除农药。即使在废水处理后，农药的浓度仍高于进水。此外，超滤和反渗透等三级处理技术也未能将所有农药浓度降低到欧盟饮用水限值 0.1μg/L 以下。为了达到这一标准，必须开发和验证新的去除技术。关于产品样本，几乎没有农药残留超过最大残留限量。氯苯胺灵的浓度在被储存的土豆加工时的土豆和废水中被证实更高。
