数字农科院2.0

Toxic wastewater status for irrigation usage at Gazipur and Savar industrial vicinity of Bangladesh

文献类型： 外文期刊

作者： Md Abu Sayem Jiku;Ashutus Singha;Muhiuddin Faruquee;Md Arifur Rahaman;Md Ashraful Alam;M. Ehsanullah

作者机构：

关键词： Industrial wastewater;Irrigation agriculture;Metal ion toxicity;Water quality

期刊名称： Shengtai Xuebao/ Acta Ecologica Sinica

ISSN： 1000-0933

年卷期： 2021 年 41.0 卷 4.0 期

页码：

收录情况： 北大核心（2020版） ; CSCD（2020-2021年度） ; 农林核心（2020版） ; 科技核心（2020版）

摘要： Treated wastewater can promote to minimizing the water stress in agricultural field due to the scarcity of irrigation water. The aim of the experiment was to determine the toxic metallic contamination for wastewater irrigation in the investigated area. Analytical techniques were used to determine quality parameter and ionic constituents. Samples were considerably alkaline (pH = 7.55 to 10.05). As for recommended TDS, samples were categorizing as freshwater (60%) and brackish water (40%). Electrical Conductivity (EC) and Sodium Absorption Ratio (SAR) express the salinity and alkalinity indicates the classes C4S1, C3S1 & C2S1. Soluble sodium percentage (SSP) categorized in different grade in samples. Regarding Hardness (HT), samples were rank as very hard, hard, and moderately hard. Upon analysis, all HCO3 was extremely hazardous, noxious for watering to plants and 56% samples of Cl, 92% of Cu and all sample of Cd were exceeded the limit thus risky for irrigation usage but zinc and iron have no effect on irrigation. Finally, the results revealed that all samples except few under test were unsuitable for irrigation due to having toxic metals such as Cu, Mn, Cd, HCO3, and Cl. From the above discussion, we concluded that most of the parameters like Cu, Mn, Cd, HCO3, and Cl were exceeded the maximum acceptable level and wastewater must be treated to remove all toxic elements before irrigation into the field. Moreover, this wastewater is a great value to reducing the water stress in farm level due to limited irrigation water.

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