LCA dataset : domestic wastewater treatment, average

domestic wastewater treatment, average

domestic sewage, average

Unit：m3Activity Type：Production Mix

GWP100

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System boundary

Cradle to Gate

Identity ID

82311950-07d2-4fa7-80d5-05578db1930c

Dataset category

Waste treatment

Associated ID

fe66c5e6-98bb-48cd-85d5-0360b796f717

Included activities starts

The activity begins with the receipt of wastewater at the gate of the treatment facility and does not include the collection and transportation of wastewater to treatment plants.

Included activities ends

The activity ends with wastewater being treated and specific wastes being discharged into the environment. Expenditures for wastewater treatment at waste treatment plants and related infrastructure at the plant are included. Discharges from any sludge digestion, biogas generation and utilization (note the specific wastewater composition) are also included.

Description

This dataset represents the treatment of wastewater generated by common transformation activities. In Qianxinan Buyei and Miao Autonomous Prefecture, Guizhou Province, the average COD content in domestic sewage is 0.0575 kg/m3, and the BOD is 0.1428 kg/m3. The wastewater treatment process shares in this region are: A/O 58.16%; oxidation ditch 23.54%; biochemical treatment + biological filter 8.34%; activated sludge process 6.97%; modified SBR 1.74%; others 1.25%.

Process Description

"Domestic wastewater" is wastewater generated from residential sources. It comes from a wide range of residential, industrial and commercial activities. In the HIQ database, the treatment options for this wastewater include: wastewater treatment plant. Domestic wastewater is produced from common conversion activities. Generally treated as waste (not recyclable) and requiring further processing. Domestic wastewater can be modeled at two levels: treatment activities and market activities. The former refers to the specific technology/mix of technologies used to treat that waste, while the latter represents mixed processing. Two modeling approaches provide the user with the flexibility to select technology-specific treatment activities when specific process assumptions are made for wastewater treatment. The collection and transportation of wastewater consider the use of sewer infrastructure in their respective market activities; transporting wastewater through sewer grids results in losses before the wastewater enters the wastewater treatment plant. Direct emissions due to these losses are taken into account in market activities. Losses are region-specific, so users are encouraged to check regional modeling assumptions.

Time period

2023

2026

Geography

China,Guizhou,Qianxinan Buyi and Miao Autonomous Prefecture

Geography comment

The annual average temperature (MAT) of this region is 16.6859392412174 degrees Celsius, and the annual average precipitation (MAP) is 1447.56523318902 mm/year. In wastewater treatment plants, 0% of the incoming water is lost due to evaporation from the pool and 0.144% is removed from the site through sludge treatment.

Macroeconomic value

Business-as-Usual

Data validation

Yes

Technology

Current Technology

Technology comment

The process proportions are: A/O 58.16%, oxidation ditch 23.54%, biochemical treatment + biological filter 8.34%, activated sludge process 6.97%, improved SBR 1.74%, and others 1.25%. The treatment combination is specific to the Qianxinan Buyi and Miao Autonomous Prefecture in Guizhou Province.