Cradle to Gate
Identity ID
a2ddfb2c-3a01-4d33-8d52-c2ca3f2cccf9
Materials
Associated ID
fe3b1524-a753-412f-9af3-dd2272d1c434
Included activities starts
Included activities ends
Description
This dataset represents the average level of water treatment at Shanghai water treatment plants, covering the resource consumption, energy use and environmental emissions of the whole water treatment process. The data include the dosage of coagulants (such as iron salts, aluminium salts and polyacrylamide) and disinfectants (such as liquid chlorine, sodium hypochlorite and chlorine dioxide), as well as the electricity consumption in the stages of water production and water transmission (distribution). It also considers the generation of pre-treatment and waste (such as spent activated carbon). The data are sourced from statistical yearbooks.
Activity Description
The water production process of water plants mainly purifies raw water through a series of treatment units (such as coagulation, sedimentation, filtration and disinfection). During operation, the system mainly consumes electricity and uses a variety of agents such as coagulants and disinfectants to remove suspended solids, pollutants and pathogenic microorganisms in the water. Some water plants also introduce advanced processes such as activated carbon adsorption, ozone oxidation or membrane treatment to further improve the quality of effluent water. The entire treatment process has stable water output and reliable water quality. Its environmental impact is mainly reflected in two aspects: energy consumption and chemical use.
Process Description
Tap water refers to water supply that meets national health standards after purification, disinfection and other processes of source water (such as rivers, lakes, groundwater, etc.) through tap water treatment plants. It can be directly used for domestic drinking and daily production activities.
Time period
2022
2026
Geography
China,Shanghai
Geography comment
Averages based on official public statistics.
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
This technology mainly uses a mixed treatment process of conventional treatment and advanced treatment. Data mainly come from official statistics and public documents and can represent regional averages.