Characteristics and Biodegradability of Wastewater Organic Matter in Municipal Wastewater Treatment Plants Collecting Domestic Wastewater and Industrial Discharge

Choi, Yun Young; Baek, Seung Ryong; Kim, Jae In; Choi, Jeong Woo; Hur, Jin; Lee, Tae U.; Park, Cheol Joon; Lee, Byung Joon

doi:10.3390/w9060409

Cited by 113 publications

(57 citation statements)

References 31 publications

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“…Hence, the membrane fouling and maintenance need to be investigated along the wastewater treatment performance. Furthermore, COD and BOD concentrations of the influent were 1276 and 750 mg/L, respectively, which were about 4 to 6 times higher than those of the typical domestic wastewater [33][34][35]. This led to adoption of long HRT in this study.…”

Section: Membrane Foulingmentioning

confidence: 84%

Performance and Fouling in Pre-Denitrification Membrane Bioreactors Treating High-Strength Wastewater from Food Waste Disposers

Lee

Kim

et al. 2017

Water

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Abstract:The study investigated the performance of the pre-denitrification membrane bioreactor (MBR) process to treat high-strength wastewater generated from food waste disposals. Extracellular polymeric substances (EPS) as membrane foulant and microbial community profiles were analyzed under different hydraulic retention time (HRT) operation conditions. The pre-denitrification MBR was effective for treating food wastewater with high chemical oxygen demand (COD)/N resulting in high total nitrogen (TN) removal efficiency. The operational data showed that effluent qualities in terms of COD, TN, and TP improved with longer HRT. However, membrane fouling potential as shown by specific membrane fouling rate and specific resistance to filtration (SRF) increased as HRT increased. The longer HRT conditions or lower influent loading led to higher levels of bound EPS while HRT did not show large effects on the level of soluble microbial products (SMP). The restriction fragment length polymorphism (RFLP) analysis showed similar microbial banding patterns from the sludges generated under different HRT conditions, indicating that HRT had minimal effects on the composition of microbial communities in the system. All these results suggest that the MBR with pre-denitrification is a feasible option for treating high-strength food wastewater and that different HRT conditions could affect the operational performance and the fouling rate, which is governed via changes in microbial responses through EPS in the system.

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Section: Membrane Foulingmentioning

confidence: 84%

Performance and Fouling in Pre-Denitrification Membrane Bioreactors Treating High-Strength Wastewater from Food Waste Disposers

Lee

Kim

et al. 2017

Water

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“…The rest of the organic matter is not biodegradable (inert). The division of COD in municipal wastewater into fractions is shown in Figure 1 [14]. The total COD of wastewater, divided into fractions, can be calculated in a simplified way [15]:…”

Section: Cod/ Bod5 Value Decrease Cod [%]mentioning

confidence: 99%

“…The rest of the organic matter is not biodegradable (inert). The division of COD in municipal wastewater into fractions is shown in Figure 1 [14].…”

Section: Introductionmentioning

confidence: 99%

New Approach in COD Fractionation Methods

Płuciennik-Koropczuk

Myszograj

2019

Water

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Conventional quality parameters such as Chemical Oxygen Demand (COD) or Biochemical Oxygen Demand (BOD) give information about the quantity of organic matter present in wastewater, but do not give a clear indication of the biodegradability of the pollutants flowing in the WWTP. Detailed knowledge can be obtained by dividing the total COD into fractions. Fractionation and balancing of COD can be determined in various ways and with varying accuracy. Good wastewater characteristics are obtained on the basis of COD fractionation in accordance with ATV-A 131 guidelines, especially when the wastewater characteristics are in high compliance with the assumptions of the method. The article proposes a modification of the ATV-A131 method that increases the accuracy of determining the COD fraction. In order to reduce errors in the calculation of COD fractions, the value of fraction X S was calculated on the basis of the biochemical degradation rate determined in studies (k) for raw wastewater, whereas the S I fraction was calculated from the difference between SCOD and BOD Tot of filtered treated wastewater. BOD Tot of the treated wastewater was calculated taking into account the rate of biochemical degradation determined in the studies (k) for treated wastewater. The shares of individual COD fractions in raw wastewater calculated on the basis of the standard and modified procedure differed by approx. 10% in the case of suspension fractions. Modification of the methodology to determine the COD of the treated wastewater S S fraction significantly influenced the contents of all fractions in treated wastewater.

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“…Aromatic compounds used in various industries are typical examples of NBDSCOD. NBDPCOD is also non-biodegradable, but is removed easily by sedimentation in a conventional WWTP [Choi et al 2017]. A schematic diagram of the chemical oxygen demand (COD) fractions and their fates in a biological wastewater treatment plant is shown in Figure 5.…”

Section: Characteristic Of Organic Compounds In Wastewater Based On Cmentioning

confidence: 99%

Analysis of Bakery Sewage Treatment Process Options Based on COD Fraction Changes

Struk-Sokołowska¹,

Tkaczuk²

2018

J. Ecol. Eng.

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Characteristics and Biodegradability of Wastewater Organic Matter in Municipal Wastewater Treatment Plants Collecting Domestic Wastewater and Industrial Discharge

Cited by 113 publications

References 31 publications

Performance and Fouling in Pre-Denitrification Membrane Bioreactors Treating High-Strength Wastewater from Food Waste Disposers

Performance and Fouling in Pre-Denitrification Membrane Bioreactors Treating High-Strength Wastewater from Food Waste Disposers

New Approach in COD Fractionation Methods

Analysis of Bakery Sewage Treatment Process Options Based on COD Fraction Changes

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