Estimating the energy independence of a municipal wastewater treatment plant incorporating green energy resources

Chae, Kyu-Jung; Kang, Jin-Ku

doi:10.1016/j.enconman.2013.08.028

Cited by 155 publications

(80 citation statements)

References 14 publications

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“…Case studies show that technologies for wastewater heat recovery have been successfully implemented in three locations of the wastewater infrastructure [7]: (1) inside buildings [8]; (2) from the sewer [9] and (3) at the wastewater treatment plant (WWTP) [10]. This article focuses on energy provision options related to thermal energy recovery from WWTPs which is reasoned as follows: One major restriction of heat recovery in buildings and sewers concerns the reduction of wastewater temperature.…”

Section: Introductionmentioning

confidence: 99%

“…Especially in cold winter days, the reduction might harm the wastewater treatment process and reduce the performance of the WWTP [11][12][13]. At WWTPs wastewater heat recovery can be placed after the treatment process [10], so that the temperature reduction of the cleaned wastewater might even lead to positive environmental effects concerning the receiving water courses [14]. At the WWTP, treated wastewater is available as medium for the heat extraction continuously and in greater quantities than in the sewage.…”

Section: Introductionmentioning

confidence: 99%

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Mapping Thermal Energy Resource Potentials from Wastewater Treatment Plants

et al. 2015

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Wastewater heat recovery via heat exchangers and heat pumps constitutes an environmentally friendly, approved and economically competitive, but often underestimated technology. By introducing the spatial dimension in feasibility studies, the results of calculations change considerably. This paper presents a methodology to estimate thermal energy resource potentials of wastewater treatment plants taking spatial contexts into account. In close proximity to settlement areas, wastewater energy can ideally be applied for heating in mixed-function areas, which very likely have a continuous heat demand and allow for an increased amount of full-load hours compared to most single-use areas. For the Austrian case, it is demonstrated that the proposed methodology leads to feasible results and that the suggested technology might reduce up to 17% of the Austrian global warming potential of room heating. The method is transferrable to other countries as the input data and calculation formula are made available. A broad application of wastewater energy with regard to spatial structures and spatial development potentials can lead to (1) increasing OPEN ACCESSSustainability 2015, 7 12989 energy efficiency by using a maximum of waste heat and (2) a significant reduction of (fossil) energy consumption which results in a considerable reduction of the global warming potential of the heat supply (GWP) if electricity from renewables is used for the operation of heat pumps.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mapping Thermal Energy Resource Potentials from Wastewater Treatment Plants

et al. 2015

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“…This solution is beneficial both for the regional units of public utilities, because it reduces transport of waste to distant landfills, and for the treatment plant which can thus increase the production of energy from biogas [9,10].…”

Section: Characteristic Of the Region And Wwtp 'Swarzewo'mentioning

confidence: 99%

“…Wastewater treatment is a process demanding high energy consumption [9,10]. WWTP 'Swarzewo' consumes approx.…”

Section: Energymentioning

confidence: 99%

Sustainability considerations in the operation of Wastewater Treatment Plant ‘Swarzewo’

Dereszewska

Cytawa²

2016

E3S Web Conf.

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Abstract. The Wastewater Treatment Plant (WWTP) 'Swarzewo' plays a special role in the protection of coastal waters of the Baltic Sea area and the management of solid wastes in the region. This paper discusses several options implemented in the WWTP area in order to achieve sustainability. The first one was the inclusion of WWTP into municipal waste management plan to increase the biogas production and to reduce volume of organic waste in the region. Nowadays, daily production of about 2000 m 3 of biogas is gained. The energy balance shows a considerable benefit from the co-fermentation of sludge with municipal organic wastes. The next goal was to obtain a favorable economical balance of energy and high level of pollution reduction. The last one was the involvement of local communities in a conscious segregation of waste 'at source'. For the purpose of this paper bio-energy production, nutrient elimination, composting, and research, have been selected as indicators of sustainable development. Furthermore, in this study the methods of nutrient recovery from wastewater were explored. Struvite precipitation and compost production were presented as an example of nutrient elimination with 'end of waste' production. Depending on the struvite precipitation conditions, recovery of 4 Mg of phosphorous and 1,8 Mg of nitrogen is possible to obtain annually.

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“…It is estimated that this consumption represents 7% of the total energy produced in the world, with a tendency to grow, due to the population increase, which is expected to grow 70% by 2050 (Wakeel et al, 2016). Typically, energy consumption represents 5 to 30% of the operating costs of a water and wastewater treatment plant in the world (Kang & Chae, 2013). Most of this energy is electrical and is used to power pumps, valves, compressors, and other equipment (Wang et al, 2016).…”

Section: Introductionmentioning

confidence: 99%