scholarly journals Life Cycle Assessment of Artificial Wetland Systems for Rural Wastewater Treatment

2021 ◽  
Vol 299 ◽  
pp. 02006
Author(s):  
Siyi Wang ◽  
Zixiang Ji ◽  
Yumin Wang
Keyword(s):  
Wastewater Treatment ◽  
Life Cycle Assessment ◽  
Life Cycle ◽  
Environmental Impact ◽  
Evaluation Method ◽  
Aeration Tank ◽  
Treatment Model ◽  
Treatment Technology ◽  
Artificial Wetland ◽  
Ecological Treatment

Decentralized wastewater treatment technology, especially natural ecological treatment technology has widely been used in rural regions. In this paper, a comprehensive life cycle assessment (LCA) of a typical wastewater ecological treatment technology - artificial wetland technology was conducted. SimaPro software was applied to simulate the wastewater treatment facility, and the CML2 baseline2000 impact evaluation method was selected to analyze the environmental loads and benefits during the life cycle. The environmental impact of the facility adopting grey-black separation mode is compared with that of the unified collection and treatment model to provide scientific basis and suggestions for the selection of wastewater collection and treatment model. The results indicated that the main environmental impact of the Southeast University artificial wetland system comes from the construction and operation of the artificial wetland and aeration tank. Marine water ecotoxicity is the main impact factor, followed by freshwater water ecotoxicity.

Life cycle assessment in wastewater treatment technology

2020 ◽  
Vol 13 ◽  
pp. 80-84 ◽  
Author(s):  
Roberto Parra-Saldivar ◽  
Muhammad Bilal ◽  
Hafiz M.N. Iqbal
Keyword(s):  
Wastewater Treatment ◽  
Life Cycle Assessment ◽  
Life Cycle ◽  
Treatment Technology

scholarly journals Life Cycle Assessment of a Plant-Based, Regionally Marketed Shampoo and Analysis of Refill Options

2021 ◽  
Vol 13 (15) ◽  
pp. 8478
Author(s):  
Hanna Kröhnert ◽  
Matthias Stucki
Keyword(s):  
Wastewater Treatment ◽  
Life Cycle Assessment ◽  
Life Cycle ◽  
Environmental Impact ◽  
Wastewater Treatment Plants ◽  
Renewable Energy Sources ◽  
Life Stage ◽  
Assessment Method ◽  
Effective Measure ◽  
Use Phase

The environmental impact of a plant-based shampoo produced and marketed in Zurich, Switzerland, was analyzed using the life cycle assessment method. Beside the identification of environmental hotspots and mitigation possibilities, the focus of the study was on the analysis and comparison of different refill offers. The results of the study show that one hair wash using the investigated shampoo is related to greenhouse gas emissions of 161 gCO2eq. For all investigated impact categories, the use phase represents the dominant life stage, except for land use, which is dominated by the production of the purely plant-based shampoo ingredients. The environmental impact related to the use phase is highly sensitive on the consumers’ showering habits, such as water consumption and water temperature, due to predominantly fossil-based heating in Zurich. On the producer’s side, a switch to renewable energy sources both for heating and electricity is identified as most effective measure to reduce the environmental impact of the manufacturing phase. As to the product end-of-life, the results suggest that emissions of the shampoo ingredients after wastewater treatment have a negligible impact on freshwater ecotoxicity. In this context, a need for further research is identified with respect to characterization factors and specific removal rates in wastewater treatment plants. From a life cycle perspective, packaging production and disposal have rather low contributions. Offering refill possibilities can reduce the packaging related contributions by several percentage points, however, higher mitigation potentials are found for use phase and manufacturing.

scholarly journals Ecological Life Cycle Assessment of Modified Novolaks Waste Used in Industrial Wastewater Treatment

2017 ◽  
Vol 12 (1) ◽  
pp. 41-50
Author(s):  
Wioletta M. Bajdur ◽  
Anna Henclik ◽  
Radomir Ščurek ◽  
Kateřina Sikorová
Keyword(s):  
Wastewater Treatment ◽  
Life Cycle Assessment ◽  
Life Cycle ◽  
Environmental Impact ◽  
Manufacturing Process ◽  
Industrial Wastewater ◽  
Phenol Formaldehyde ◽  
Water Soluble ◽  
Industrial Wastewater Treatment ◽  
The Impact

Abstract Ecological Life Cycle Assessment (LCA) applied in the assessment of the impact of products on the environment is a technique that allows for the evaluation of the environmental impact of polymeric flocculants used in industrial wastewater treatment. The possibility of conducting a full life cycle and thus manufacturing process analysis allows for reliable and accurate identification of the sources of environmental hazards and the impact of new products on the environment. Newly synthesized waste-based polymers are water soluble and possess the properties of flocculants, while reducing the parameters in industrial wastewater. In the paper, there are presented the results of the analysis conducted using LCA technique for the assessment of the impact of modified waste phenol formaldehyde resin (Novolak) on the environment. LCA technique was used to assess the impact of the new flocculant applied in the process of metallurgical wastewater treatment taking into account the environmental impact of the flocculant manufacturing process.

scholarly journals Industrial or Traditional Bamboo Construction? Comparative Life Cycle Assessment (LCA) of Bamboo-Based Buildings

2018 ◽  
Vol 10 (9) ◽  
pp. 3096 ◽  
Author(s):  
Edwin Zea Escamilla ◽  
Guillaume Habert ◽  
Juan Correal Daza ◽  
Hector Archilla ◽  
Juan Echeverry Fernández ◽  
...  
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Environmental Impact ◽  
Evaluation Method ◽  
Construction Materials ◽  
Housing Demand ◽  
Intergovernmental Panel ◽  
Hollow Block ◽  
Regenerative Development ◽  
Comparative Life Cycle Assessment

The past five decades have witnessed an unprecedented growth in population. This has led to an ever-growing housing demand. It has been proposed that the use of bio-based materials, and specifically bamboo, can help alleviate the housing demand in a sustainable manner. The present paper aims to assess the environmental impact caused by using four different construction materials (bamboo, brick, concrete hollow block, and engineered bamboo) in buildings. A comparative life cycle assessment (LCA) was carried out to measure the environmental impact of the different construction materials in the construction of single and multi-storey buildings. The LCA considered the extraction, production, transport, and use of the construction materials. The IPCC2013 evaluation method from the Intergovernmental Panel on Climate Change IPCC2013 was used for the calculations of CO2 emissions. The assessment was geographically located in Colombia, South America, and estimates the transport distances of the construction materials. The results show that transportation and reinforcing materials significantly contribute to the environmental impact, whereas the engineered bamboo construction system has the lowest environmental impact. The adoption of bamboo-based construction systems has a significant potential to support the regenerative development of regions where they could be used and might lead to long-lasting improvements to economies, environments, and livelihoods.

scholarly journals Micromixers for Wastewater Treatment and Their Life Cycle Assessment (LCA)

2021 ◽  
Author(s):  
Olga P. Fuentes ◽  
Mabel J. Noguera ◽  
Paula A. Peñaranda ◽  
Sergio L. Flores ◽  
Juan C. Cruz ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Life Cycle Assessment ◽  
Life Cycle ◽  
Environmental Impact ◽  
Textile Industry ◽  
High Performance ◽  
Low Cost ◽  
Attractive Alternative ◽  
Pressure Drops ◽  
Catalytically Active

The use of micromixers and catalytically active nanocomposites can be an attractive alternative for the treatment of wastewaters from the textile industry, due to their high activity, low consumption of such nanocomposites, short reaction times and the possibility to work under continuous operation. In this study, 6 different designs of micromixers were modeled and evaluated for the treatment of wastewaters. Velocity profiles, pressure drops, and flows were analyzed and compared for the different devices under the same mixing conditions. In addition, Life cycle assessment (LCA) methodology was applied to determine their performance in terms of environmental impact. Considering the high environmental impact of water sources contaminated by dyes from the textile industry, it becomes critically important to determine when the proposed micromixers are a suitable alternative for their remediation. The LCA and operational efficiency studies results shown here provide a route for the design of novel wastewater treatment systems by coupling low-cost and high-performance micromixers.

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