印度曼尼普尔部分村庄饮用水和灌溉用地下水水质比较研究

Ngangbam Premala Devi, Laishram Nandababu Singh
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摘要

在 2021 年季风前和季风期间,对曼尼普尔邦英帕尔东区一些村庄用于饮用和灌溉的地下水质量进行了监测比较研究。共采集了十五(15)份地下水样本,并对一些重要参数进行了检测,如温度、pH 值、TDS、TH、TA、Mg2+、K+、HCO3-、Ca2+、CO32-、Na+、Cl-、NO3- 和 SO42-。结果显示,所有地下水都呈弱碱性,属于淡水范畴。在这两个季节中,各种地下水的大多数参数值/浓度都低于 BIS 和 WHO 规定的可接受限值。在季风前,73.33% 的地下水为 "中等硬度水",26.67% 为 "硬水",而在季风季节,60% 为 "中等硬度水",40% 为 "硬水"。这两个季节的主要阳离子和阴离子分别为 Na+(钠)和 HCO3-(碳酸氢盐)。与季风前相比,在季风期的大多数样本中,所研究参数的数值和浓度都较大/较高。这主要是由于地壳中的可溶性盐分被雨水浸出,最后在季风季节与含水层中的地下水体混合。水质指数值显示,在季风前,26.67%的地下水为优水,66.67%为良水,6.66%为劣水;而在季风季节,60%为良水,40%为劣水。对灌溉水水质的指标(RSC、SAR、%Na、PI 和 KR)进行了检测。总体而言,所有样本在两个季节都可用于灌溉(农业)目的。相关系数 (r) 值表明,在这两个季节,各种地下水的 TH 主要是由 Ca2+ 和 Mg2+ 的溶解硫酸盐造成的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Comparative Study of Groundwater Quality for Drinking and Irrigation Purposes in Selected Villages of Manipur, India
A comparative study was done to monitor the groundwater qualities, both for drinking as well as irrigation purposes in some villages of Imphal East district, Manipur, in the period of pre-monsoon and monsoon of 2021. Totally, fifteen (15) groundwater samples were collected and examined for some important parameters like temperature, pH, TDS, TH, TA, Mg2+, K+, HCO3-, Ca2+, CO32-, Na+, Cl-, NO3- and SO42-. The results revealed that all the groundwaters were slightly alkaline in nature and fall under freshwater category. In both the seasons, majority of the parameters for various groundwaters have found their values/ concentrations below its acceptable limits, as given by BIS and WHO. In pre-monsoon, 73.33% of groundwaters were found as ‘moderately hard water’ and 26.67% (hard water) whereas in monsoon, 60% (moderately hard water) and 40% (hard water). Dominant ions in both seasons were Na+ (sodium) and HCO3- (bicarbonate) for cations and anions respectively. In most of the samples of monsoon, values and concentrations of the studied parameters were observed to be greater/higher as compared to that of pre-monsoon. It was mainly due to the leaching out of the soluble salts in the earth’s crust by rainwaters and finally mingled with the groundwater bodies in the aquifers in monsoon season. WQI values showed that in pre-monsoon, 26.67% of groundwaters were found as excellent water, 66.67% (good) and 6.66% (poor) while in monsoon, 60% (good) and 40% (poor). For irrigation water qualities, the indices (RSC, SAR, %Na, PI and KR) were examined. In the overall, all the samples can be utilized for irrigation (agriculture) purposes in both seasons. Correlation co-efficient (r) values showed that in both the seasons, the TH of various groundwaters was mainly because of dissolved sulphates of Ca2+ along with Mg2+.
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