Excess Sludge Reduction in Waste Water Treatment Plants

Kabir, Mahmudul; Suzuki, Masafumi; Yoshimura, Noboru

doi:10.5772/16082

Cited by 3 publications

(3 citation statements)

References 11 publications

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“…The byproducts of WWTPs are dewatered, dried, and finally burnt into ashes. Some are used in farm lands as compost fertilizer [15]. However, it is suggested that the dried byproducts of WWTPs are fed into the pyrolysis process rather than the burning process.…”

Section: -mentioning

confidence: 99%

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Biological and Chemical Wastewater Treatment Processes

Samer¹

2015

Wastewater Treatment Engineering

150

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This chapter elucidates the technologies of biological and chemical wastewater treatment processes. The presented biological wastewater treatment processes include bioremediation of wastewater that includes aerobic treatment oxidation ponds, aeration lagoons, aerobic bioreactors, activated sludge, percolating or trickling filters, biological filters, rotating biological contactors, biological removal of nutrients and anaerobic treatment anaerobic bioreactors, anaerobic lagoons phytoremediation of wastewater that includes constructed wetlands, rhizofiltration, rhizodegradation, phytodegradation, phytoaccumulation, phytotransformation, and hyperaccumulators and mycoremediation of wastewater. The discussed chemical wastewater treatment processes include chemical precipitation coagulation, flocculation , ion exchange, neutralization, adsorption, and disinfection chlorination/dechlorination, ozone, UV light . "dditionally, this chapter elucidates and illustrates the wastewater treatment plants in terms of plant sizing, plant layout, plant design, and plant location.

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Section: -mentioning

confidence: 99%

“…This method implements bacterial populations that possess superior Biological and Chemical Wastewater Treatment Processes http://dx.doi.org/10.5772/61250 sedimentation characteristics. The living microorganisms break down the organic matter in the wastewater and consequently purify the wastewater from biological waste [15].…”

Section: -mentioning

confidence: 99%

Biological and Chemical Wastewater Treatment Processes

Samer¹

2015

Wastewater Treatment Engineering

150

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“…The disposal of excess/residual sludge biomass from waste water treatment plants (WWTPs) is a matter of major concern (Kabir et al, 2011, Low and Chase, 1999and Semblante et al, 2014 and a very practical question, because it directly affects investment costs of sludge treatment processes such as sludge digester, sludge dewatering, etc. Several effective technologies currently minimize excess sludge production, namely: ultra-sonication (Khanal et al, 2007 andPilli et al, 2011), thermal treatment (Razmjoo and Sefidari, 2011), chemical treatment (Liu, 2003), etc.…”

Section: Introductionmentioning

confidence: 99%

Effect of internal recycling ratios on biomass parameters and simultaneous reduction of nitrogen and organic matter in a hybrid treatment system

Nguyen

Ngo

Yoon

2016

Ecological Engineering

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Highlights A hybrid system was developed by combining 3 treatment methods.  The system was successful in nutrient and organic removal without using any chemical additives.  Internal recycling ratios affected biomass growth and system performance.  Biomass production and sludge yield under different runs was determined.  The highest removal efficiency was achieved at the internal recycling ratio of 400%. AbstractA new large-scale pilot hybrid treatment system of 53 m 3 /day was developed by combining 3 treatment methods: switched internal recycling flows to equalization tank (EQ); rotating hanging media bioreactor (RHMBR); and submerged flat sheet membrane bioreactor (SMBR). The system was operated for more than 16 months in a real-world municipal wastewater treatment plant, using different internal recycling ratios and observing/monitoring the results. This paper addresses not only the urgent problems of treating nutrient and organic pollutants in municipal wastewater, but also assesses characteristics of biomass production, sludge yield, and observed yield during the pilot operation. It also details design parameters used to achieve these assessed levels. Furthermore, the effects and correlations of the loading rates, activated sludge and biomass parameters, on different runs were also studied. The purpose of this was to identify the most suitable indicator for assessing the hybrid system's performance. Results strongly indicated that increasing the internal circulation rate greatly influenced the declining yield trend. The lowest biomass production (Px ,bio ) and sludge yields (PX ,VSS or PX ,TSS ) were shown for conditions in run 3, and run 4, respectively. Overall the developed treatment system performed extremely well in biological terms for actual municipal wastewater treatment and resulted in high pollutant removal efficiencies, reduced sludge production at a reasonable cost. The hybrid system is a potential option for wastewater treatment, reuse and economy.2

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Origins, Mechanisms, and Remedies of Fluoride Ions from Ground and Surface Water: A Review

Patrick

Sahu

2023

Chemistry Africa

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Excess Sludge Reduction in Waste Water Treatment Plants

Cited by 3 publications

References 11 publications

Biological and Chemical Wastewater Treatment Processes

Biological and Chemical Wastewater Treatment Processes

Effect of internal recycling ratios on biomass parameters and simultaneous reduction of nitrogen and organic matter in a hybrid treatment system

Origins, Mechanisms, and Remedies of Fluoride Ions from Ground and Surface Water: A Review

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