Geochemistry of the Rehai and Ruidian geothermal waters, Yunnan Province, China

Zhang, Guoping; Liu, Cong‐Qiang; Liu, Hong; Jin, Zhensheng; Han, Guilin; Li, Ling

doi:10.1016/j.geothermics.2007.09.002

Cited by 87 publications

(62 citation statements)

References 18 publications

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“…Rehai springs display a very wide diversity in source temperature and chemistry, despite their close proximity to each other, which likely results from phase separation in the subsurface and different degrees of mixing with shallow waters. Alkaline springs such as Gumingquan and Zimeiquan, which have source water of w96 C and pH w9.3, represent water-dominated end-members (Zhang et al, 2008b). These springs are characterized by high total dissolved solids (TDS, >1 g/L), high Cl À , high silica, and are classified as Na-Cl-HCO 3 systems (Zhang et al, 2008b).…”

Section: Geological Setting and Geochemistrymentioning

confidence: 99%

“…Alkaline springs such as Gumingquan and Zimeiquan, which have source water of w96 C and pH w9.3, represent water-dominated end-members (Zhang et al, 2008b). These springs are characterized by high total dissolved solids (TDS, >1 g/L), high Cl À , high silica, and are classified as Na-Cl-HCO 3 systems (Zhang et al, 2008b). By contrast, Figure 1 Location and physicochemical properties of geothermal features in the Rehai Geothermal Field, Yunnan, China.…”

Section: Geological Setting and Geochemistrymentioning

confidence: 99%

“…By contrast, Figure 1 Location and physicochemical properties of geothermal features in the Rehai Geothermal Field, Yunnan, China. Fault locations and delineations of bulk mineralogy are approximate and based upon work from Zhang et al (2008b) and Zhu and Tong, 1987. Diretiyanqu, an area with sulfur-depositing fumaroles (Zhu and Tong, 1987), small acidic pools, and extensively altered clays (Zhu and Tong, 1987), represents a vapor-dominated end-member (Zhang et al, 2008b). Other springs, such as Zhenzhuquan may be temporally variable and influenced by shallow sources that are affected by seasonal precipitation.…”

Section: Geological Setting and Geochemistrymentioning

confidence: 99%

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A review of the microbiology of the Rehai geothermal field in Tengchong, Yunnan Province, China

Hedlund

Cole

Williams

et al. 2012

Geoscience Frontiers

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The Rehai Geothermal Field, located in Tengchong County, in central-western Yunnan Province, is the largest and most intensively studied geothermal field in China. A wide physicochemical diversity of springs (ambient to w97 C; pH from 1.8 to !9.3) provides a multitude of niches for extremophilic microorganisms. A variety of studies have focused on the cultivation, identification, basic physiology, taxonomy, and biotechnological potential of thermophilic microorganisms from Rehai. Thermophilic bacteria isolated from Rehai belong to the phyla Firmicutes and Deinococcus-Thermus. Firmicutes include neutrophilic or alkaliphilic Anoxybacillus, Bacillus, Caldalkalibacillus, Caldanaerobacter, Laceyella, and Geobacillus, as well as thermoacidophilic Alicyclobacillus and Sulfobacillus. Isolates from the Deinococcus-Thermus phylum include several Meiothermus and Thermus species. Many of these bacteria synthesize thermostable polymer-degrading enzymes that may be useful for biotechnology. The thermoacidophilic archaea Acidianus, Metallosphaera, and Sulfolobus have also been isolated and studied. A few studies have reported the isolation of thermophilic viruses belonging to Siphoviridae (TTSP4 and TTSP10) and Fuselloviridae (STSV1) infecting Thermus spp. and Sulfolobus

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Section: Geological Setting and Geochemistrymentioning

confidence: 99%

Section: Geological Setting and Geochemistrymentioning

confidence: 99%

Section: Geological Setting and Geochemistrymentioning

confidence: 99%

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A review of the microbiology of the Rehai geothermal field in Tengchong, Yunnan Province, China

Hedlund

Cole

Williams

et al. 2012

Geoscience Frontiers

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“…This area is abundant in the geothermal resource, second only to the geothermal regions in Yunnan and Tibet of southwest China [14,15]. The presence of more than 300 hot springs with a temperature range of 50-100 ∘ C indicates a significant geothermal potential in Guangdong.…”

Section: Introductionmentioning

confidence: 99%

Hydrogeochemical Characteristics and Geothermometry Applications of Thermal Waters in Coastal Xinzhou and Shenzao Geothermal Fields, Guangdong, China

Wang

2018

Geofluids

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Two separate groups of geothermal waters have been identified in the coastal region of Guangdong, China. One is Xinzhou thermal water of regional groundwater flow system in a granite batholith and the other is thermal water derived from shallow coastal aquifers in Shenzao geothermal field, characterized by high salinity. The hydrochemical characteristics of the thermal waters were examined and characterized as Na-Cl and Ca-Na-Cl types, which are very similar to that of seawater. The hydrochemical evolution is revealed by analyzing the correlations of components versus Cl and their relative changes for different water samples, reflecting different extents of water-rock interactions and clear mixing trends with seawaters. Nevertheless, isotopic data indicate that thermal waters are all of the meteoric origins. Isotopic data also allowed determination of different recharge elevations and presentation of different mixing proportions of seawater with thermal waters. The reservoir temperatures were estimated by chemical geothermometries and validated by fluid-mineral equilibrium calculations. The most reliable estimates of reservoir temperature lie in the range of 148-162 ∘ C for Xinzhou and the range of 135-144 ∘ C for Shenzao thermal waters, based on the retrograde and prograde solubilities of anhydrite and chalcedony. Finally, a schematic cross-sectional fault-hydrology conceptual model was proposed.

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“…Alkaline hot spring waters contain high levels of K, Na, F, Cl, SiO 2 , and dissolved solids (TDS) (Zhang et al 2008). In addition, toxic elements such as arsenic may be present.…”

Section: Introductionmentioning

confidence: 99%

Field observations and management strategy for hot spring wastewater in Wulai area, Taiwan

Lin

Chen

Lei

et al. 2010

Water Science and Technology

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Hot springs are important centers for recreation and tourism. However, the pollution that may potentially be caused by hot spring wastewater has rarely been discussed. More than half of Taiwan's hot springs are located in areas where the water quality of water bodies is to be protected, and untreated wastewater could pollute the receiving water bodies. In this study, we investigate hot spring wastewater in the Wulai area, one of Taiwan's famous hot spring resorts. Used water from five hot spring hotels was sampled and ten sampling events were carried out to evaluate the changes in the quality of used water in different seasons, at different periods of the week, and from different types of hotels. The concentrations of different pollutants in hot spring wastewater were found to exhibit wide variations, as follows: COD, 10-250 mg/L; SS, N.D.-93 mg/L; NH(3)-N, 0.01-1.93 mg/L; TP, 0.01-0.45 mg/L; and E. coli, 10-27,500 CFU/100 mL. The quality of hot spring wastewater depends on the operation of public pools, because this affects the frequency of supplementary fresh water and the outflow volume. Two management strategies, namely, onsite treatment systems and individually packaged treatment equipment, are considered, and a multi-objective optimization model is used to determine the optimal strategy.

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Geochemistry of the Rehai and Ruidian geothermal waters, Yunnan Province, China

Cited by 87 publications

References 18 publications

A review of the microbiology of the Rehai geothermal field in Tengchong, Yunnan Province, China

A review of the microbiology of the Rehai geothermal field in Tengchong, Yunnan Province, China

Hydrogeochemical Characteristics and Geothermometry Applications of Thermal Waters in Coastal Xinzhou and Shenzao Geothermal Fields, Guangdong, China

Field observations and management strategy for hot spring wastewater in Wulai area, Taiwan

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