Chemistry of Groundwater from Two Aquifers in Liuyi Coal Mine, Northern Anhui Province, China: a Comparative Study

Lin, Sun; Gui, He Rong

doi:10.4028/www.scientific.net/amm.212-213.362

Cited by 2 publications

(1 citation statement)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, in some places of China, the excessive occurrence of dissolved solids in the groundwater, primarily due to geological causes, though not classified as brackish, restricts its usage for drinking water production. A notable example is the relatively high concentrations of sodium, fluoride and sulfate in the groundwater of the Huaibei Plain [2,3]. The maximum allowable concentrations for sodium, fluoride and sulfate are 200, 1 and 250 mg•L -1 , respectively, according to the Chinese Standards for Drinking Water Quality [4].…”

Section: Introductionmentioning

confidence: 99%

Pilot study for the treatment of sodium and fluoride-contaminated groundwater by using high-pressure membrane systems

Wang

Yang

et al. 2015

Front. Environ. Sci. Eng.

View full text Add to dashboard Cite

High-pressure membrane process is one of the cost-effective technologies for the treatment of groundwater containing excessive dissolved solids. This paper reports a pilot study in treating a typical groundwater in Huaibei Plain containing excessive sodium, sulfate and fluoride ions. Three membrane systems were set up and two brands of reverse osmosis (RO), four low-pressure RO (LPRO) and one tight nanofiltration (NF) membranes were tested under this pilot study. An apparent recovery rate at about 75% was adopted. Cartridge filtration, in combination with dosing antiscalent, was not sufficient to reduce the fouling potential of the raw water. All RO and LPRO systems (except for the two severely affected by membrane fouling) demonstrated similar rejection ratios of the conductivity (~98.5%), sodium (~98.5%) and fluoride (~99%). Membrane fouling substantially reduced the rejection performance of the fouled membranes. The tight NF membrane also had a good rejection on conductivity (95%), sodium (94%) and fluoride (95%). All membranes rejected sulfate ion almost completely (more than 99%). The electricity consumptions for the RO, LPRO and NF systems were 1.74, 1.10 and 0.72 kWh•m -3 treated water, respectively. The estimated treatment costs by using typical RO, LPRO and tight NF membrane systems were 1.21, 0.98 and 0.96 CNY•m -3 finished water, respectively. A treatment process consisting of either LPRO or tight NF facilities following multi-media filtration was suggested.

show abstract

Section: Introductionmentioning

confidence: 99%

Pilot study for the treatment of sodium and fluoride-contaminated groundwater by using high-pressure membrane systems

Wang

Yang

et al. 2015

Front. Environ. Sci. Eng.

View full text Add to dashboard Cite

show abstract

Insight into the water–rock interaction process and purification mechanism of mine water in underground reservoir of Daliuta coal mine in China

Jiang

Gao

et al. 2022

Environ Sci Pollut Res

View full text Add to dashboard Cite

The process of water rock interaction and the puri cation mechanism of mine water quality were not clear after being stored in underground reservoir. This study based on the analysis of the hydrochemical characteristics of the reservoir water samples and the characterization of the rock samples, combined with PHREEQC analysis, the mechanism of water quality puri cation of mine water was discussed. The results showed that the rocks in the underground reservoir had layered silicate structure and aky kaolinite structure, with some irregular edges and micro cracks, and higher speci c surface area and total pore volume. These characteristics made the rocks had a certain adsorption and removal capacity for heavy metal ions and other pollutants in the mine water. The water rock interaction, such as the dissolution of albite and halite, the precipitation of gypsum and kaolinite, and the cation exchange, resulted in the increase of the concentration of Na + and the decrease of the concentration of Ca 2+ , Mg 2+ and TDS in the outlet water. This study also showed that PHREEQC analysis can be used to analyze the water rock interaction of coal mine underground reservoir and obtained more detailed information.

show abstract

Chemistry of Groundwater from Two Aquifers in Liuyi Coal Mine, Northern Anhui Province, China: a Comparative Study

Cited by 2 publications

References 3 publications

Pilot study for the treatment of sodium and fluoride-contaminated groundwater by using high-pressure membrane systems

Pilot study for the treatment of sodium and fluoride-contaminated groundwater by using high-pressure membrane systems

Insight into the water–rock interaction process and purification mechanism of mine water in underground reservoir of Daliuta coal mine in China

Contact Info

Product

Resources

About