Risks associated with the circular economy: Treated sewage reuse in agriculture

2022 ◽  
pp. 37-48
Author(s):  
Ana María Leiva ◽  
Benjamín Piña ◽  
Gladys Vidal
2016 ◽  
Vol 24 (6) ◽  
pp. 53-63
Author(s):  
Ji-Young Lee ◽  
Su-Jin Kim ◽  
Jin-Su Kim ◽  
Min-Koo Kang ◽  
Sang-Ill Lee

2015 ◽  
Vol 72 (11) ◽  
pp. 1954-1961 ◽  
Author(s):  
Chart Chiemchaisri ◽  
Wilai Chiemchaisri ◽  
Sirilak Prasertkulsak ◽  
Nutta Sangnarin Hamjinda ◽  
Thammarat Kootatep ◽  
...  

Only 3.4% of total water use in the Bangkok Metropolitan area is reused treated sewage. This study anticipates that further treated-sewage reuse in industrial sectors, commercial buildings and public parks, in addition to present in-plant and street cleaning purposes, would increase total water reuse to about 10%. New water reuse technologies using membrane bioreactor (MBR) and microfiltration (MF) as tertiary treatment were implemented to assess their potential for their application in the Bangkok Metropolitan area. The MBR was applied to the treatment of raw sewage in a central treatment plant of the Bangkok Metropolitan area. The MF membrane was used for polishing the effluent of the treatment plant. The results show the quality of treated water from MBR and tertiary MF treatment could meet stringent water reuse quality standard in terms of biochemical oxygen demand, suspended solids and biological parameters. Constant permeate flux of the membrane was achieved over long-term operation, during which inorganic fouling was observed. This is due to the fact that incoming sewage contains a considerable amount of inorganic constituents contributed from storm water and street inlet in the combined sewerage systems. The total cost of the MBR for sewage treatment and production of reuse water is estimated to be about USD1.10/m3.


2014 ◽  
Vol 804 ◽  
pp. 135-138
Author(s):  
Ree Ho Kim ◽  
Jung Hun Lee ◽  
Mik Yeong Kim ◽  
Han Na Choi

Existing systems that provide an alternative water supply such as a sewage reuse system (SRS) or a rainwater harvesting system (RWHS) tend to experience a slight loss of efficiency through the separate use of their component systems. A smart system has been introduced that combines the stable water quality of an RWHS and the stable water quantity of an SRS for use in sports complexes in Korea, and selected monitoring results are presented here in terms of the quantity of water used. The system monitors the operating conditions and provides measurement data. It is designed to be remotely operated at each facility in which it is installed. Ninety-eight percent of the treated sewage was used for lawn watering and maintenance of wetlands. The rainwater collection efficiency was higher in summer than winter in the rainwater utilization system. The amount of water produced from the sewage reuse system can be reduced during summer and increased during winter when less rainfall is experienced. A system that combines rainwater and treated sewage is expected to reduce the cost and energy use for treating wastewater.


Author(s):  
Tamara Merkulova ◽  
Kateryna Kononova ◽  
Olena Titomir

Author(s):  
Susan EVANS

This case study explores the strategic business opportunities, for Lane Crawford, an iconic luxury department store, to transition in a circular economy towards sustainability. A new experimentation framework was developed and conducted among cross departmental employees, during a Design Lab, with intention to co-create novel Circular Economy business concepts towards a new vision: the later was a reframe of the old system based on the principles of sustainability; to move beyond a linear operational model towards a circular economy that can contribute to a regenerative society. This work draws on both academic and professional experience and was conducted through professional practice. It was found that innovative co-created concepts, output from the Design Lab, can create radical change in a circular economy that is holistically beneficial and financially viable; looking forward to extract greater value a)Internal organization requires remodeling to transform towards a circular economy; b)Requirement for more horizonal teams across departments vs solely vertical; c)New language and relationships are required to be able to transition towards a circular economy; d)Some form of physical and virtual space requirements, for cross-disciplinary teams to come together to co-create; e)Ability to iterate, learn and evolve requires agency across the business


2008 ◽  
Vol 37 (2) ◽  
Author(s):  
Maciej Walczak

Changes of microbial indices of water quality in the Vistula and Brda rivers as a result of sewage treatment plant operationThis paper reports the results of studies of microbiological changes in the water quality of the Vistula and Brda rivers after the opening of sewage treatment plants in Bydgoszcz. The study involved determining the microbiological parameters of water quality. Based on the results obtained, it was found that the quality of the water in both rivers had improved decidedly after the opening of the plants, although an increased number of individual groups of microorganisms was found at the treated sewage outlet from one of the plants.


2020 ◽  
Vol 19 (4) ◽  
pp. 598-617 ◽  
Author(s):  
S.V. Ratner

Subject. The article considers the concept of circular economy, which has originated relatively recently in the academic literature, and is now increasingly recognized in many countries at the national level. In the European Union, the transition to circular economy is viewed as an opportunity to improve competitiveness of the European Union, protect businesses from resource shortages and fluctuating prices for raw materials and supplies, and a way to increase employment and innovation. Objectives. The aim of the study is to analyze the incentives developed by the European Commission for moving to circular economy, and to assess their effectiveness on the basis of statistical analysis. Methods. I employ general scientific methods of research. Results. The analysis of the EU Action Plan for the Circular Economy enabled to conclude that the results of the recent research in circular economy barriers, eco-innovation, technology and infrastructure were successfully integrated into the framework of this document. Understanding the root causes holding back the circular economy development and the balanced combination of economic and administrative incentives strengthened the Action Plan, and it contributed to the circular economy development in the EU. Conclusions. The measures to stimulate the development of the circular economy proposed in the European Action Plan can be viewed as a prototype for designing similar strategies in other countries, including Russia. Meanwhile, a more detailed analysis of barriers to the circular economy at the level of individual countries and regions is needed.


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