Odour management and treatment technologies: An overview

Schlegelmilch, M.; Streese, J.; Stegmann, R.

doi:10.1016/j.wasman.2005.07.006

Cited by 102 publications

(91 citation statements)

References 18 publications

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“…An enhanced 472 urine stabilization process is therefore expected to not only minimize the storage volume required prior to any further treatment, but also shorten the duration of odor emission. Due to strict regulations of odor control in many countries, a systematic odor assessment (recording, characterizing, and evaluating) should be done before any sanitation system is applied (Schlegelmilch et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Adaptation of urine source separation in tropical cities: Process optimization and odor mitigation

Zhang

Giannis

Chang

et al. 2013

Journal of the Air & Waste Management Association

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Source-separating urine from other domestic wastewaters promotes a more sustainable municipal wastewater treatment system. This study investigated the feasibility and potential issues of applying a urine source-separation system in tropical urban settings. The results showed that source-separated urine underwent rapid urea-hydrolysis (ureolysis) at temperatures between 34-40 o C, stale/fresh urine ratios greater than 40%, and/or with slight fecal cross-contamination. Undiluted (or low-diluted) urine favored ureolysis; this can be monitored by measuring conductivity as a reliable and efficient indicator. The optimized parameters demonstrated that an effective urine source-separation system is achievable in tropical urban areas. On the other hand, the initial release of CO 2 and NH 3 led to an elevated pressure in the headspace of the collection reservoir, which then dropped to a negative value, primarily due to oxygen depletion by the microbial activity in the gradually alkalized urine. Another potential odor source during the ureolysis process was derived from the high production of volatile fatty acids (VFA), which were mainly acetic, propanoic, and butyric acids. Health concerns related to odor issues might limit the application of source separation systems in urban areas; it is therefore vital to systematically monitor and control the odor emissions from a source separation system. As such, an enhanced ureolysis process can attenuate the odor emissions.Implications: Urine source separation is promising to improve the management of domestic wastewater in a more sustainable way. The work demonstrates the achievability of an effective urine source-separation system in tropical urban areas. The installation of urine-stabilization tanks beneath high-rise buildings lowers the risk of pipe clogging. Conductivity measurement can be utilized as a reliable process indicator for an automated system. However, urine hydrolysis raises a strong potential of odor emission (both inorganic and organic), which might limit the application of source separation systems in urban areas. An enhanced ureolysis process could shorten and attenuate the odor emissions.

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Section: Introductionmentioning

confidence: 99%

Adaptation of urine source separation in tropical cities: Process optimization and odor mitigation

Zhang

Giannis

Chang

et al. 2013

Journal of the Air & Waste Management Association

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“…The non-thermal plasma technology uses strong alternating electrical currents or microwave radiation. So, produced plasma results in the decomposition of gaseous pollutants [11]. Comparison of oxidation methods is shown in Table 2.…”

Section: Oxidation Methodsmentioning

confidence: 99%

Analysis of the application of selected physico-chemical methods in eliminating odor nuisance of municipal facilities

Miller

Grzelka

Romanik

et al. 2018

E3S Web of Conferences

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Abstract. Operation of municipal management facilities is inseparable from the problem of malodorous compounds emissions to the atmospheric air. In that case odor nuisance is related to the chemical composition of waste, sewage and sludge as well as to the activity of microorganisms whose products of life processes can be those odorous compounds. Significant reduction of odorant emission from many sources can be achieved by optimizing parameters and conditions of processes. However, it is not always possible to limit the formation of odorants. In such cases it is best to use appropriate deodorizing methods. The choice of the appropriate method is based on in terms of physical parameters, emission intensity of polluted gases and their composition, if it is possible to determine. Among the solutions used in municipal economy, there can be distinguished physico-chemical methods such as sorption and oxidation. In cases where the source of the emission is not encapsulated, odor masking techniques are used, which consists of spraying preparations that neutralize unpleasant odors. The paper presents the characteristics of selected methods of eliminating odor nuisance and evaluation of their applicability in municipal management facilities.

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“…The odour thresholds of some substances are shown in Table 3. There is a number of available technologies but their applicability is dependant on the characteristics and the physical and chemical properties of the vent gas (Schleglmich, 2005;Busca, 2003).…”

Section: Odour Control Technologiesmentioning

confidence: 99%