Wastewater Recycling in Greece: The Case of Thessaloniki

Ilias, Andreas; Panoras, A.; Angelakιs, Andreas N.

doi:10.3390/su6052876

Cited by 32 publications

(24 citation statements)

References 18 publications

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“…It is worth noting that policies have direct impacts on the optimization objectives. For the EU, energy efficiency is not the only focus of attention, according to EU Urban Wastewater Treatment Directive (91/271) [21,136]. Moreover, tax, cost, environmental impact, and other factors are the goals that need to be concerned.…”

Section: Control Strategy and Decision-makingmentioning

confidence: 99%

Application and Evaluation of Energy Conservation Technologies in Wastewater Treatment Plants

Sun

et al. 2019

Applied Sciences

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High energy consumption is an important issue affecting the operation and development of wastewater treatment plants (WWTPs). This paper seeks energy-saving opportunities from three aspects: energy application, process optimization, and performance evaluation. Moreover, effective energy-saving can be achieved from the perspective of energy supply and recovery by using green energy technologies, including wastewater and sludge energy recovery technologies. System optimization and control is used to reduce unnecessary energy consumption in operation. Reasonable indexes and methods can help researchers evaluate the application value of energy-saving technology. Some demonstration WWTPs even can achieve energy self-sufficiency by using these energy conservation technologies. Besides, this paper introduces the challenges faced by the wastewater treatment industry and some emerging energy-saving technologies. The work can give engineers some suggestions about reducing energy consumption from comprehensive perspectives.

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Section: Control Strategy and Decision-makingmentioning

confidence: 99%

Application and Evaluation of Energy Conservation Technologies in Wastewater Treatment Plants

Sun

et al. 2019

Applied Sciences

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“…Since the industrial activity on islands is usually very low (considered zero in the present study), most of the reclaimed water is generated to be used in agricultural applications. Previous projects on reclaimed water realized for case studies in Greece were used as references [3]. The minimum and maximum treatment requirements were determined according to the final use of the water and water quality regulations.…”

Section: Wastewater Treatment Plantsmentioning

confidence: 99%

“…Furthermore, in order to promote water reuse and decrease the environmental impacts of desalination, wastewater processes must also be accordingly incorporated into sustainable water supply plans. Since 2011, several Greek towns were equipped with wastewater reuse systems due to the introduced "Urban Wastewater Treatment Directive" (271/91) [3]. However, there remain numerous populations in the state that can still benefit from this type of onsite treatment systems [3].…”

Section: Introductionmentioning

confidence: 99%

“…Since 2011, several Greek towns were equipped with wastewater reuse systems due to the introduced "Urban Wastewater Treatment Directive" (271/91) [3]. However, there remain numerous populations in the state that can still benefit from this type of onsite treatment systems [3]. Although there is currently no water reuse on Aegean islands, this technology can play a very important role in the development of sustainable water strategies for the wider region.…”

Section: Introductionmentioning

confidence: 99%

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Sustainable Water Generation on a Mediterranean Island in Greece

Fernández-Gil

Petrakopoulou

2019

Energies

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Population growth, increasing droughts, and high irrigation needs are all factors that create freshwater shortage problems on islands. The pressing needs of remote islands usually call for water transport from the mainland or other neighboring islands, at a high cost. This study evaluates the design and economic viability of an alternative, sustainable water supply network on the Mediterranean island of Skyros in Greece. The proposed water supply system provides the island with potable water from desalination units, as well as water for agricultural use from a wastewater treatment plant. The total investment cost of the project is found to be €9.8 million, accounting for the cost of transportation of the water between the different settlements (installation, operations, and maintenance), as well as for the required energy of the involved methods. It is found that 44% of the expenses are related to the transport of potable and residual water, and 52% of the cost corresponds to the production of the required desalinated water. As part of a sustainable water and energy network, all energy needs of water generation are assumed to be covered by a renewable power plant. The total cost of water generation on the island with the proposed system is estimated at 2.49€/m3, constituting a competitive and more sustainable solution, when compared to current practices.

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“…Treated wastewater is a "new" water resource, which can positively contribute to the agriculture sustainability. The advantage consists in restoring the organic and inorganic nutrient pools of soils, solving, at the same time, water shortage and wastewater discharge problems [2], especially in arid and semi-arid regions [3]. However, wastewater reuse for irrigation purposes can represent a serious threat to environmental quality [4].…”

Section: Introductionmentioning

confidence: 99%

Colloidal Mobilization and Fate of Trace Heavy Metals in Semi-Saturated Artificial Soil (OECD) Irrigated with Treated Wastewater

et al. 2016

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Abstract:The mobility of selected heavy metals in trace concentrations was investigated in a standard OECD soil irrigated with the effluent of a real municipal wastewater treatment plant. While Cd, Cu and Ni accumulation-migration patterns were mainly influenced by the mobility of colloids generated from soil organic and inorganic matter, Zn mobility was more influenced by the wastewater content of dissolved organic matter and by its salinity. Metal accumulation caused by interaction with colloids resulted in contamination peaks both in different zones of the soil column and in the leaching solution. The release of metals in the leachate was correlated to the contemporary release of silicates from kaolinite and dissolved organic matter, identified through UV absorbance and chemical oxygen demand monitoring. The hypothesized colloidal mobilization was confirmed by spectroscopic studies. The highly heterogeneous complexes of organic and inorganic molecules responsible for metal transport through soil appeared to be structured in highly stable micellar aggregates.

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Wastewater Recycling in Greece: The Case of Thessaloniki

Cited by 32 publications

References 18 publications

Application and Evaluation of Energy Conservation Technologies in Wastewater Treatment Plants

Application and Evaluation of Energy Conservation Technologies in Wastewater Treatment Plants

Sustainable Water Generation on a Mediterranean Island in Greece

Colloidal Mobilization and Fate of Trace Heavy Metals in Semi-Saturated Artificial Soil (OECD) Irrigated with Treated Wastewater

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