Grey water footprint and interprovincial virtual grey water transfers for China's final electricity demands

Liao, Xiawei; Chai, Li; Xu, Xiaofan; Lu, Qiong; Ji, Junping

doi:10.1016/j.jclepro.2019.04.179

Cited by 46 publications

(11 citation statements)

References 39 publications

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“…A study of the WF of coalproducing energy in China (Chai et al 2018) showed that the GWF of electricity is determined mainly by oil pollutants. The limitations of GWF studies resulting from the limited number of monitored indicators are also pointed out by other authors Liao et al 2019;Liu et al 2017). Therefore, it shall be appropriate in further studies to enlarge the scope of monitored pollutants and to identify pollutants reaching high GWF values; and, if necessary, to start regulating these pollutants in discharge permits.…”

Section: Discussionmentioning

confidence: 79%

Grey water footprint as a tool for wastewater treatment plant assessment– Hostivice case study

Stejskalová

Ansorge

Kučera

et al. 2021

Urban Water Journal

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The study evaluates the wastewater treatment plant reconstruction via the Grey Water Footprint methodology. The application was tested on a medium-size wastewater treatment plant discharging water into a small watercourse. The 6-year monitoring was assessed. The assessment included a period before and after the reconstruction when a capacity was increased and the treatment technology had been equipped with a membrane sludge separation. Ammonium nitrogen is causing the Grey Water Footprint the most often; both, before and after the reconstruction. The assessment has shown that the current setting of legal discharge limits may not cover all environmental risks even if the wastewater treatment plant meets all requirements. For environmental sustainability, it is necessary if the recipient watercourse was at least 1.4 times more watery for assimilation of total nitrogen pollution, and 3.9 times more watery for assimilation of total phosphorus pollution.

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Section: Discussionmentioning

confidence: 79%

Grey water footprint as a tool for wastewater treatment plant assessment– Hostivice case study

Stejskalová

Ansorge

Kučera

et al. 2021

Urban Water Journal

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show abstract

“…Blue water refers to surface runoff and ground water [34]. Grey water is the freshwater required to dilute polluted water [35]. The water footprint intensity of each food in this study was obtained from the database build by Mekonnen and Hoekstra [36,37].…”

Section: Water Footprint (Wf) Of Food Consumptionmentioning

confidence: 99%

Drivers of the Growing Water, Carbon and Ecological Footprints of the Chinese Diet from 1961 to 2017

Cao

Chai

Yan

et al. 2020

IJERPH

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In the past decades, food consumption in China has undergone a rapid increase and a significant structure transition, as a result of population growth and economic development. The food system is increasingly threatening the environment by depleting water resources, deteriorating water bodies, aggravating climate change, degrading ecosystems, etc. It is significant to understand how food consumption affected the environment and how its impacts were driven in the historical period. This study reveals the environmental impacts of China’s food system from 1961 to 2017 from a consumption perspective by assessing water, carbon, and ecological footprints. The logarithmic mean Divisia index method was used to examine the drivers of the growing environmental footprints. The assessment results show that all three environmental footprints have had a drastic increase of more than two times during the studied period, which indicates the high environmental pressure posed by food consumption. We also found that, before the 1980s, the main driving forces of the increasing footprints were population and per capita energy intake. From 1984, the diet pattern started to take a positive effect and then became the dominant driver of the growing environmental footprints after the end of the 1990s.

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“…Blue water refers to surface runoff and groundwater [44]. Grey water is the fresh water needed to dilute sewage [45]. The carbon footprint measures the total amount of greenhouse gas (GHG) caused by an activity (or accumulated in the life cycle of a product) [46].…”

Section: Food Systems Environmental Footprintmentioning

confidence: 99%

Demographic Scenarios of Future Environmental Footprints of Healthy Diets in China

Han

Chai

Liao

2020

Foods

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Dietary improvement not only benefits human health conditions, but also offers the potential to reduce the human food system’s environmental impact. With the world’s largest population and people’s bourgeoning lifestyle, China’s food system is set to impose increasing pressures on the environment. We evaluated the minimum environmental footprints, including carbon footprint (CF), water footprint (WF) and ecological footprint (EF), of China’s food systems into 2100. The minimum footprints of healthy eating are informative to policymakers when setting the environmental constraints for food systems. The results demonstrate that the minimum CF, WF and EF all increase in the near future and peak around 2030 to 2035, under different population scenarios. After the peak, population decline and aging result in decreasing trends of all environmental footprints until 2100. Considering age-gender specific nutritional needs, the food demands of teenagers in the 14–17 year group require the largest environmental footprints across the three indicators. Moreover, men’s nutritional needs also lead to larger environmental footprints than women’s across all age groups. By 2100, the minimum CF, WF and EF associated with China’s food systems range from 616 to 899 million tons, 654 to 953 km3 and 6513 to 9500 billion gm2 respectively under different population scenarios. This study builds a bridge between demography and the environmental footprints of diet and demonstrates that the minimum environmental footprints of diet could vary by up to 46% in 2100 under different demographic scenarios. The results suggest to policymakers that setting the environmental constraints of food systems should be integrated with the planning of a future demographic path.

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Grey water footprint and interprovincial virtual grey water transfers for China's final electricity demands

Cited by 46 publications

References 39 publications

Grey water footprint as a tool for wastewater treatment plant assessment– Hostivice case study

Grey water footprint as a tool for wastewater treatment plant assessment– Hostivice case study

Drivers of the Growing Water, Carbon and Ecological Footprints of the Chinese Diet from 1961 to 2017

Demographic Scenarios of Future Environmental Footprints of Healthy Diets in China

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