Wastewater treatment and sludge management strategies for environmental sustainability

2022 ◽  
pp. 97-112
Author(s):  
Manisha Sharma ◽  
Ankush Yadav ◽  
Mrinal Kanti Mandal ◽  
Shailesh Pandey ◽  
Supriya Pal ◽  
...  
2006 ◽  
Vol 2006 (2) ◽  
pp. 591-607
Author(s):  
Grzegorz Bujoczek ◽  
Jan A. Oleszkiewicz ◽  
James L. Barnard ◽  
Patrick Coleman ◽  
Kenneth Abraham

2005 ◽  
Vol 51 (11) ◽  
pp. 121-129 ◽  
Author(s):  
M. Cakmakci ◽  
E. Erdim ◽  
C. Kinaci ◽  
L. Akca

The main concern of this paper was to predict the sludge quantities generated from 18 wastewater treatment plants, which were stated to be established in the “Istanbul Water Supply, Sewerage and Drainage, Sewage Treatment and Disposal Master Plan”, 10 of which are in operation at present. Besides this, obtaining the required data to compare various treatment schemes was another goal of the study. Especially, the estimation of the sludge quantity in the case of enhanced primary sedimentation was of importance. Wastewater sludge management strategies were discussed in order to develop suggestions for Istanbul Metropolitan city. Within this context, the wastewater treatment facilities, mentioned in the Master Plan that had been completed by 2000, were evaluated in terms of sludge production rates, locations and technical and management aspects. Disposal alternatives of the wastewater treatment sludge were also evaluated in this study. Using of the dewatered sludge as a landfill cover material seems the best alternative usage. Up to the year of 2040, the requirement of cover material for landfills in İstanbul will be met by the dewatered sludge originated from wastewater treatment plants in the region.


2021 ◽  
Vol 190 ◽  
pp. 116714
Author(s):  
Xavier Flores-Alsina ◽  
Elham Ramin ◽  
David Ikumi ◽  
Theo Harding ◽  
Damien Batstone ◽  
...  

1993 ◽  
Vol 28 (3-5) ◽  
pp. 91-99
Author(s):  
R. A. Wagner ◽  
M. G. Heyl

As part of the Sarasota Bay National Estuary Program (NEP) evaluation of environmental problems, modeling tools were used to estimate pollution loadings from diverse sources, including surface runoff, baseflow, wastewater treatment plant discbarges, septic tanks, and direct deposition of rainfall on the bay surface. After assessing the relative impacts of the pollution sources, alternative management strategies were identified and analyzed. These strategies focused primarily on future development, and included structural and nonstructural best management practices (BMPs), as well as a regional wastewater treatment plan. Loading reductions, along with planning-level cost data and estimates of feasibility and other potential benefits, were used to identify the most promising alternatives.


Author(s):  
Сергій Олегович Ареф’єв

The paper covers the current issues of counteraction to constantly arising crisis phenomena in the process of using the enterprise potential. For about 15 years the efforts to comply with legislation have been steadily rising, and more and more emphasis is paid to various aspects of corporate social responsibility. There is a wide range of activities, such as increasing employee awareness, creating a management system to prevent abrupt changeover, a solid corporate structure and timely disclosure of information, as well as managing the organization as an integration of its potentials. Adaptive monitoring is viewed as a critical component in finding and controlling the reserves for further utilization of enterprise resources in the context of developing its long-term strategies. Building the subsystems for change management strategies can form the basis for creating anti-crisis potential. However, there is another barrier to the process of adaptation which is a vulnerable internal environment. Apparently, the goals of the chosen strategies in each of the business areas are not always announced, and this can increase the entropy level within the enterprise, creating threats and hazards that give rise to crisis phenomena. From a dynamic perception, adaptive management concept involves the construction of a decomposition of its possible implementation scenarios subject to the type of threats to enterprise performance and characteristics of its potentials. The search for the development models that can retain the enterprise resources is a fundamental challenge for its operation in the future. It is about facilitating the transition from product economy to the system economy, from a dissipative approach to resources to an adaptive management practices, to a cultural leap towards economic and environmental sustainability that should affect the entire society, from strengthening of the territory and cooperation among all stakeholders to gain the resource utilization efficiency beyond renewable energy, starting with raw materials and local waste management to create an integrated technology network and from a number of integrated technologies, from deindustrialized territories reconstruction towards new relationships between agriculture, industry and academia, conducting local case studies to test the effects of innovations, thus boosting the process of transforming the research results into new pilot projects.


2021 ◽  
Author(s):  
A H M Enamul Kabir ◽  
Masahiko Sekine ◽  
Tsuyoshi Imai ◽  
Koichi Yamamoto ◽  
Ariyo Kanno ◽  
...  

<p>Freshwater microplastics pollution has been a recent focus. River freshwater microplastics pollution are vital towards freshwater ecosystems as well as have been the prominent source-to-sink conduits to export MPs into the marine realm. Wastewater treatment plants (WWTPs) have been identified as one of the major point-sources. To date, sources-to-sinks comprehensive knowledge are highly limited. This study explored sources-to-sinks microplastics pollution i.e., WWTPs-to-river-to-marine comprehensively. The two rivers i.e., Koya River (KR) and Nishiki River (NR) which are flowing to the Seto Inland Sea (SIS) and the WWTPs effluent samples were collected from selected (n=37) stations in the Yamaguchi prefecture, Japan. Filtration, wet peroxidation, and density separation methods were employed to extract microplastics particles. Polymers were identified via attenuated total reflectance-Fourier transform infrared spectroscopy. The average microplastics abundances were found KR—82.25±67.84 n/L and NR—38.73±24.13 n/L for the river water, and KRWWTPs—79.5±3.5 n/L and NRWWTPs—72.25±23.64 n/L for WWTPs effluents, respectively. The KR were found to be more polluted than the NR. WWTPs effluents were found posing higher abundances than rivers. Significantly higher microplastics concentration were found in the WWTPs downstream stations than other river stations. Characterization revealed that small MPs (<1000 µm) in size, fibers in shape, polymers— polyethylene, polypropylene, polyethylene terephthalate, vinylon were major in both of the WWTPs effluents and rivers. WWTPs influenced river environments by means both of the abundances and microplastics characteristics (shapes-size-polymers). The estimated source-to-sink emission demonstrated a substantial number of MPs discharge into the rivers by the WWTPs (0.007—0.086 billion/day) and rivers-to-SIS marine environments (1.15—7.951 billion/day). The emission represented that the WWTPs were the prominent point-source to cause river microplastics pollution. Rivers were the initial sinks of the Japan land-sourced microplastics and prominent pathways to emit microplastics to the ultimate marine sink i.e., SIS. Large amounts of MPs are being generated on land sources before the plastics wastes degrade into MPs secondarily. The pollution characteristics (shapes-sizes-polymers) indicated ecotoxicological threats to these rivers and the downstream environments. Overall, this study provided an insight of sources-to-sinks pollution, fulfilled the preliminary knowledge gaps of pollution occurring land-sources, fate and loadings. We recommended microplastics pollution control at source. This study will aid in developing microplastics pollution control and management strategies for environmental protection and sustainability in the regional Japan as well as global context upon “thinking globally and acting locally”.</p><p><strong>Keywords: </strong>Abundance, Point-source, Source-to-sink, Riverine microplastics pollution, Wastewater treatment plants</p>


Author(s):  
Kin Wai Michael Siu ◽  
Yi Lin Wong

The current project management literature seldom addresses the leadership and management strategies used in educational project. The knowledge specialized for workshop-based educational project is even more limited. As one of the most complicated educational projects, this chapter aims to define what workshop-based educational project and its uniqueness is, examine the concerns in such workshop and analyze possible roles of project manager through the case study of the environmental sustainability project. The parties involved and their relationship in work are also clearly revealed. Six unique concerns which specifically exist in such kind of project and five roles of its project managers are identified are discussed and explained by using the case study. It is hoped that the discussion in this chapter is able to give references for educators or administrators who plan to hold projects which involve hands-on workshops as the core of educational activities.


2020 ◽  
Vol 12 (15) ◽  
pp. 6133
Author(s):  
Charikleia Prochaska ◽  
Anastasios Zouboulis

Although Greece has accomplished wastewater infrastructure construction to a large extent, as 91% of the country’s population is already connected to urban wastewater treatment plants (WWTPs), many problems still need to be faced. These include the limited reuse of treated wastewater and of the surplus sludge (biosolids) produced, the relative higher energy consumption in the existing rather aged WWTPs infrastructure, and the proper management of failing or inadequately designed septic tank/soil absorption systems, still in use in several (mostly rural) areas, lacking sewerage systems. Moreover, the wastewater treatment sector should be examined in the general framework of sustainable environmental development; therefore, Greece’s future challenges in this sector ought to be reconsidered. Thus, the review of Greece’s urban wastewater history, even from the ancient times, up to current developments and trends, will be shortly addressed. This study also notes that the remaining challenges should be analyzed in respect to the country’s specific needs (e.g., interaction with the extensive tourism sector), as well as to the European Union’s relevant framework policies and to the respective international technological trends, aiming to consider the WWTPs not only as sites for the treatment/removal of pollutants to prevent environmental pollution, but also as industrial places where energy is efficiently used (or even produced), resources’ content can be potentially recovered and reused (e.g., nutrients, treated water, biosolids), and environmental sustainability is being practiced overall.


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