SWOT analysis of wastewater heat recovery systems application

Kordana, Sabina

doi:10.1051/e3sconf/20171700042

Cited by 19 publications

(26 citation statements)

References 13 publications

(11 reference statements)

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“…However, when it comes to the level of sewage and WWTPs, the number of stakeholders increases. At the same time, there are stringent legal requirements both in terms of the minimum allowable temperature after the harnessing and the physical characteristics of the sludge [41]. This is because, it is impossible to treat sewage water below a certain temperature, usually 10 • C [12], as the nitrification process, is severely affected [37].…”

Section: Levels Of Heat Harnessingmentioning

confidence: 99%

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A Key Review of Non-Industrial Greywater Heat Harnessing

2018

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Abstract:The ever-growing concerns about making buildings more energy efficient and increasing the share of renewable energy used in them, has led to the development of ultra-low carbon buildings or passive houses. However, a huge potential still exists to lower the hot water energy demand, especially by harnessing heat from waste water exiting these buildings. Reusing this heat makes buildings more energy-efficient and this source is considered as a third-generation renewable energy technology, both factors conforming to energy policies throughout the world. Based on several theoretical and experimental studies, the potential to harness non-industrial waste water is quite high.As an estimate about 3.5 kWh of energy, per person per day could be harnessed and used directly, in many applications. A promising example of such an application, are low temperature fourth generation District Heating grids, with decentralized sources of heat. At the moment, heat exchangers and heat pumps are the only viable options to harness non-industrial waste heat. Both are used at different scales and levels of the waste-water treatment hierarchical pyramid. Apart from several unfavourable characteristics of these technologies, the associated exergetic efficiencies are low, in the range of 20-50%, even when cascaded combinations of both are used. To tackle these shortcomings, several promising trends and technologies are in the pipeline, to scavenge this small-scale source of heat to a large-scale benefit.

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Section: Levels Of Heat Harnessingmentioning

confidence: 99%

“…However, in both arrangements the efficiency is reduced considerably, as deposits and sediments tend to settle on the surface. Pumping and filtering this sewage water to an out-line HE can be a solution, but this increases the investment costs and is not practical without major infrastructure refurbishments [41].…”

Section: Heat Pumpsmentioning

confidence: 99%

A Key Review of Non-Industrial Greywater Heat Harnessing

2018

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“…1, are environmental and economic requirements for the state of the environment [7] and the nature use that are generated by public authorities. The implementation of established requirements is carried out through the implementation of environmental measures at various levels, where BAT is at the center [8][9][10].…”

Section: Resultsmentioning

confidence: 99%

Research of Environmental and Economic Interactions of Coke And By-Product Process

et al. 2017

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Abstract. The issues of showing relations between environmental and economic indicators (further -environmental and economic interactions) of coke and by-product process are considered in the article. The purpose of the study is to reveal the regularities of the functioning of the local environmental and economic system on the basis of revealed spectrum of environmental and economic interactions. A simplified scheme of the environmental and economic system "coke and by-product process -the environment" was developed. The forms of the investigated environmental -economic interactions were visualized and the selective interpretation of the tightness of the established connection was made. The main result of the work is modeling system of environmental and economic interactions that allows increasing the efficiency of local ecological and economic system management and optimizing the "interests" of an industrial enterprise -the source of negative impact on the environment. The results of the survey can be recommended to government authorities and industrial enterprises with a wide range of negative impact forms to support the adoption of effective management decisions aimed at sustainable environmental and economic development of the region or individual municipalities.

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“…In order to improve its operation, for many years they have been equipped with various types of detention tanks [3,4]. However, it should be remembered that the choice of the appropriate project option should be supported by the analysis of many indicators [5,6], including in particular a technical and financial [7][8][9], and environmental [10,11] analysis, taking into account the lifespan of the investment [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

A critical evaluation of the methods for the determination of required volumes for detention tank

Starzec

2018

E3S Web Conf.

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Abstract. Simplified methods allow a straightforward and quick determination of parameters of interest. A simplified method of calculation to be used must provide sufficiently accurate simulation results. This paper presents the results of tests completed to evaluate the effects of the parameters which describe a sewer catchment area and network on the value of Tp, a parameter applied in the Dziopak method [18]. The results of 2997 hydrodynamic simulations allowed to formulate an artificial neural network the application of which enabled the determination of the value of Tp dependent on the design parameters of a sewer catchment area and network. The artificial neural network had a very low error R 2 = 0.9972 between the expected and determined values of Tp. The completed tests indicated a relationship by which an increase of the rainfall duration, a parameter used in the dimensioning of detention tank, is concomitant to an increase in the value of Tp. The calculations made so far included an assumption that the Tp value is constant irrespective of the design rainfall duration for the dimensioning of detention tank; this assumption has led to gross calculation errors. The paper also provides proof that the inclusion of these relationships allows a more precise determination of the service volume required for a multi-chamber detention tank.

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SWOT analysis of wastewater heat recovery systems application

Cited by 19 publications

References 13 publications

A Key Review of Non-Industrial Greywater Heat Harnessing

A Key Review of Non-Industrial Greywater Heat Harnessing

Research of Environmental and Economic Interactions of Coke And By-Product Process

A critical evaluation of the methods for the determination of required volumes for detention tank

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