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Evaluation of Treatment Techniques for Utilising Acid Mine Water in Agriculture
Water, Air, & Soil Pollution ( IF 2.9 ) Pub Date : 2021-04-29 , DOI: 10.1007/s11270-021-05129-9
Bably Prasad , Sudip Maity , Mukul Ranjan Mondal , Krishna Kant Kumar Singh

Acid mine water was treated with fly ash zeolite (FAZ), followed by different active chemicals to know its suitability for crops. Acid mine drainage (AMD) was obtained from Gorbi abandoned opencast mines of Singrauli, Northern Coalfields (NCL), India. The AMD was treated with 20 g/l dosing of fly ash zeolite, followed by different precipitating chemicals, using different doses of Ba(OH)2, BaCO3 and Ca(OH)2. The doses of 1.0 g/l Ba(OH)2, 1.5 g/l BaCO3 and 0.5 g/l Ca(OH)2 were used. The treatment with FAZ, followed by 1.0 g/l of Ba(OH)2, converted the water quality of AMD to the permissible level. The electrical conductivity (EC), percentage of sodium and metals found at the permissible level indicated the suitability of mine water for agriculture use. AMD treated directly with 1.0 g/l of Ba(OH)2 was found unsuitable for agriculture use. The treatment with FAZ and followed by BaCO3 (1.5 g/l) explained that the water quality was not at the permissible level and unsuitable for agriculture use. AMD treated directly with 1.5 g/l of BaCO3 was also found unsuitable for agriculture. The treatment with FAZ, and followed by 0.5 g/l dosing of Ca(OH)2, also showed water quality not at the permissible level. The conductivity, total salt content (as TDS) and sulfate values increased or decreased minimally, and there was an increase in the concentrations of total hardness and calcium hardness in the final treated mine water. The direct dosing with 0.5 g/l of Ca(OH)2 made AMD unsuitable for agriculture use. Treatment with 20 g/l FAZ followed by 1.0 g/l of Ba(OH)2 produced the treated AMD suitable for agriculture use.



中文翻译:

农业酸性矿井水处理技术评价

用粉煤灰沸石(FAZ)处理酸性矿泉水,然后用不同的活性化学品处理,以了解其对农作物的适用性。酸性矿山排水(AMD)来自印度北部煤田(NCL)Singrauli戈尔比废弃的露天矿。用20 g / l剂量的粉煤灰沸石处理AMD,然后使用不同剂量的Ba(OH)2,BaCO 3和Ca(OH)2施用不同的沉淀化学品。为1.0g / L BA(OH)的剂量2,1.5克/升的BaCO 3和0.5克/升的Ca(OH)2中使用。用FAZ处理,然后用1.0 g / l的Ba(OH)2进行处理,将AMD的水质转换为允许的水平。允许水平的电导率(EC),钠和金属的百分比表明矿井水适用于农业。发现直接用1.0 g / l的Ba(OH)2处理过的AMD不适合用于农业。先用FAZ处理,再用BaCO 3(1.5 g / l)处理,解释其水质未达允许水平,不适合农业使用。还发现直接用1.5 g / l的BaCO 3处理的AMD不适合用于农业。用FAZ处理,然后以0.5 g / l的剂量添加Ca(OH)2,也显示水质不在允许的水平。电导率,总盐含量(以TDS计)和硫酸盐值最小程度地增加或减少,并且在最终处理的矿井水中总硬度和钙硬度的浓度有所增加。用0.5 g / l的Ca(OH)2直接给药使AMD不适合用于农业。先用20 g / l FAZ处理,再用1.0 g / l Ba(OH)2处理,即可得到适合农业用途的经处理AMD。

更新日期:2021-04-29
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