Water–energy sustainability synergies and health benefits as means to motivate potable reuse of coalbed methane-produced waters

Singh, Udayan; Colosi, Lisa M.

doi:10.1007/s13280-018-1098-8

Cited by 9 publications

(7 citation statements)

References 75 publications

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“…Singh and Colosi (2019) described several synergies that might aid in solving the coal–water nexus through a produced‐to‐potable concept that involves reclaiming coalbed methane (CBM)‐produced water using an RO process to generate potable water. This work would lead to the value of CBM‐produced water being altered from waste to economic capital.…”

Section: Managementmentioning

confidence: 99%

Water reclamation and reuse

Zhang

Sun

Liu

2020

Water Environment Research

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Literature published in 2019 pertinent to water reclamation and reuse has been classified into five sections: safe reuse, treatment technologies, management, assessment, and case studies. Membranes have been widely applied in integrated processes to polish secondary effluent and achieve high-quality reclaimed water. Increased efforts have also been made to facilitate feasible and safe water reuse.

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Section: Managementmentioning

confidence: 99%

Water reclamation and reuse

Zhang

Sun

Liu

2020

Water Environment Research

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“…Dashed lines indicate the system boundaries for this study. The figure is an adaptive extension from [6].…”

Section: Overviewmentioning

confidence: 99%

“…Such waters are moderately-to-severely brackish, and they require appropriate management to minimize risks Such systems would entail collection of brines from individual households and their transmission to a brine treatment unit. Examples of such systems may be found in [6,11].…”

Section: Introductionmentioning

confidence: 99%

“…Based on this confluence of circumstances, and other factors, we have posited that reuse of treated CBM-produced waters as potable drinking water supply in coal-bearing regions of select developing countries could have dramatically positive benefits. We previously outlined relevant features of systems where the proposed approach could work [6]. Several especially notable factors include: appropriate geochemical characteristics of the produced waters (e.g., moderately brackish composition of Na-HCO 3 type, low organic content); high social acceptance for RO; existing water distribution infrastructure; and socialized government, in which a single unified entity controls both energy assets and public health services.…”

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confidence: 99%

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Potable Reuse of Coalbed Methane-Produced Waters in Developing Country Contexts—Could the Benefits Outweigh the Costs to Facilitate Coal Transitions?

Singh

Colosi

2019

Energies

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Development of coalbed methane (CBM) projects is critical to the achievement of climate change goals because it will help facilitate coal-to-gas transitions in Asia-Pacific countries with low conventional gas reserves. However, growth in CBM in these regions will necessitate strategic, sustainable approaches to produced water management. We posit that it may be possible to deliver synergistic water, energy, and health benefits by reusing CBM-produced waters as potable water supply in water-stressed coal-bearing regions. The goal of this study is to probabilistically evaluate life cycle costs and benefits of using reverse osmosis to treat CBM-produced water in the Damodar Valley coalfields in eastern India. Two treatment configurations are assessed, namely, centralized, and decentralized (i.e., in-home). We find that both configurations offer good cost-effectiveness based on two separately computed metrics to account for the value of health improvement benefits (i.e., disability-adjusted life years (DALYs) averted or monetized health benefits). We also observe that centralized systems are more cost-effective than decentralized, because they reduce capital cost and use-phase energy consumption per unit-volume treated. Average estimated values for the cost-benefit ratio are <0.5 and 1.0 for centralized and decentralized, respectively. Normalizing by anticipated health benefits, cost-effectiveness metrics are <$30/DALY for the centralized system versus <$200/DALY for the decentralized system. These results are highly sensitive to the value of statistical life and baseline water access. A related analysis taking into account both CBM-produced waters and mine waters revealed that deployment of reverse osmosis (RO) could provide drinking to approximately 3.5 million people over 20 years in the Damodar Valley region. These results have interesting implications not only for the study region but also for other CBM-producing countries experiencing chronic severe water stress.Energies 2020, 13, 154 2 of 18 to groundwater and surface water supplies that are used as drinking water supply or to support natural ecosystems.Moving beyond management, it is of interest to examine how rapidly advancing desalination technologies could be leveraged to make beneficial reuse of CBM and other produced waters. Several applications are of interest in this vein, including irrigation or agriculture and reinjection into oil or gas operations to enhance fuel recovery (i.e., water flooding). However, many regions with abundant CBM energy resources also experience chronic, severe water stress and lack an adequate potable water supply. It is therefore of interest to examine whether the produced waters can be treated using some appropriate desalination technology and then used as drinking water. This approach formed the basis for a recent study by Meng et al. [4], in which geospatial analysis was used to evaluate the "produced-to-potable concept". In that study, it was concluded that treatment of produced waters from conventional and unconventional...

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“…e e ective exploitation of CBM is of great signi cance to the full utilization of energy, the improvement of energy structure, and the sustainable development of energy [1,2]. Meanwhile, the successful CBM recovery can help reduce the risk of the mine explosion and mitigate the greenhouse e ect induced by the methane emission, which can achieve the sustainable development of environment and energy [3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Effect of Threshold Pressure Gradients on Control Areas Determination of Production Well in CBM Reservoirs

Wang

Yang

Wang

et al. 2019

Advances in Polymer Technology

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Understanding the mechanism of water drainage and gas recovery is the burning issue for Coalbed Methane (CBM) reservoir development. In the process of exploitation, threshold pressure gradients (TPG) is an important factor affecting the control areas, which related to the low-permeability and complex water saturation of CBM reservoirs. In this paper, a new flow model of CBM has been established considering the TPG and gas desorption. Then we carried out a series of experiments and fitted out a new relational expression between TPG and permeability and water saturation, which shows that TPG is negatively correlated with permeability and positively correlated with water saturation. After that, we analyzed the influence of TPG and desorption on the control radius and illustrated a case study. The results show that TPG and desorption effect both can slow down the rate of pressure reduction. The case study indicates that the control radius of target well groups ranges from 55 m to 136.7 m The average control radius and gas TPG are 91.3 m 0.0082 MPa/m respectively. Furthermore, we classify the wells into 5 categories, which are mainly distributed in III (80∼100 m). Finally, we suggest using well pattern infilling in region II and III and hydraulic fracturing method for region IV to increase the utilization area and the sustainability for the target area. This study provides a quick and reasonable prediction of control radius in CBM reservoir with different water saturation for further adjustment suggestion and sustainable development.

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Water–energy sustainability synergies and health benefits as means to motivate potable reuse of coalbed methane-produced waters

Cited by 9 publications

References 75 publications

Water reclamation and reuse

Water reclamation and reuse

Potable Reuse of Coalbed Methane-Produced Waters in Developing Country Contexts—Could the Benefits Outweigh the Costs to Facilitate Coal Transitions?

Effect of Threshold Pressure Gradients on Control Areas Determination of Production Well in CBM Reservoirs

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