Reducing the natural color of membrane bioreactor permeate with activated carbon or ozone

Abegglen, Christian; Joss, Adriano; Boehler, M.; Buetzer, S.; Siegrist, Hansruedi

doi:10.2166/wst.2009.331

Cited by 13 publications

(5 citation statements)

References 13 publications

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“…More details on aeration are given in Section 6.2. In connection with (v), the nature of the biomass in MBRs can be partially controlled through the addition of coagulants or flocculants [124,[140][141][142][143][144] and adsorbent agents (e.g., activated carbon [145][146][147][148][149][150][151]). In addition, the bioprocess parameters, such as the sludge retention time (SRT), influence the biomass and supernatant as well as the fouling [152].…”

Section: Blocking and Blocking Mitigation In Submerged Hf Modulesmentioning

confidence: 99%

The Performance and Fouling Control of Submerged Hollow Fiber (HF) Systems: A Review

et al. 2017

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Abstract:The submerged membrane filtration concept is well-established for low-pressure microfiltration (MF) and ultrafiltration (UF) applications in the water industry, and has become a mainstream technology for surface-water treatment, pretreatment prior to reverse osmosis (RO), and membrane bioreactors (MBRs). Compared to submerged flat sheet (FS) membranes, submerged hollow fiber (HF) membranes are more common due to their advantages of higher packing density, the ability to induce movement by mechanisms such as bubbling, and the feasibility of backwashing. In view of the importance of submerged HF processes, this review aims to provide a comprehensive landscape of the current state-of-the-art systems, to serve as a guide for further improvements in submerged HF membranes and their applications. The topics covered include recent developments in submerged hollow fiber membrane systems, the challenges and developments in fouling-control methods, and treatment protocols for membrane permeability recovery. The highlighted research opportunities include optimizing the various means to manipulate the hydrodynamics for fouling mitigation, developing online monitoring devices, and extending the submerged HF concept beyond filtration.

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Section: Blocking and Blocking Mitigation In Submerged Hf Modulesmentioning

confidence: 99%

The Performance and Fouling Control of Submerged Hollow Fiber (HF) Systems: A Review

et al. 2017

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“…The results of the latter investigations showed a good decoloration by using powdered and granulated activated carbon. But, due to the high nutrient and organic content in MBR effluent, biofilms in the permeate mains were observed (Abegglen et al 2009). However, the dosage of activated carbon seems to be a suitable option for decoloration and sorption of dissolved carbon, especially in single house applications.…”

Section: Reuse Potential Of Biological Treated Blackwater For Toilet mentioning

confidence: 99%

“…Firstly, the nonbiodegradable organic components found in blackwater, which are expected to be mainly humins, will accumulate in the system. This may lead to a further increase of coloration due to the decomposition of these substances (Bö hler et al (2007)), followed maybe by double-flushing of the toilets and therefore increasing treatment costs (Abegglen et al 2009). Secondly, the incomplete nutrient elimination will result in an accumulation of nitrate-nitrogen, phosphate and salts in the system until equilibrium with the influent is reached.…”

Section: Reuse Potential Of Biological Treated Blackwater For Toilet mentioning

confidence: 99%

Performance of a MBR for the treatment of blackwater

Knerr

Rechenburg

Kistemann

et al. 2011

Water Science and Technology

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The paper describes the experience gained in operating a membrane bioreactor (MBR) for the treatment of blackwater. Beside a complete characterization of blackwater, operational conditions and removal efficiency concerning parameters such as COD, BOD(5), nitrogen and phosphorus as well as microbiological parameters were determined. Furthermore the membrane performance was investigated. The results show that in blackwater treatment nitrogen removal is limited in the biological process, because of the blackwater matrix (BOD(5):TKN=1.1:1.0). Blackwater contains a high fraction of soluble, inert COD, which is not degradable by biological operation, only. Phosphorus elimination was negligible, probably induced by precipitation of cellular phosphorus. Although the released permeate was free of the fecal indicators E. coli and streptococcus and met guideline values, a direct reuse as service water is not recommended due to the yellowish coloration.

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“…Moreover, recycled water or grey water could be used for flushing. In an Eawag pilot project, a membrane bioreactor was installed in the cellar and recycled wastewater used for toilet-flushing (28). This technology needs improvement because yellow coloring of water resulted in double-flushes and more frequent cleaning.…”

Section: Technological Aspects Of Buildings and Sanitary Installationsmentioning

confidence: 99%

Pilot Projects in Bathrooms: A New Challenge for Wastewater Professionals

Lienert

Larsen

2007

Water Practice and Technology

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Household-centered technologies such as urine source separation (NoMix technology) could induce a paradigm change in urban wastewater management, hereby improving water pollution control and resource management. Technological innovations need real-world application for further development. The Swiss research project Novaquatis accompanied five pilot projects from 1997 on. We give a systematic overview of our experience, summarizing various important aspects, a fundamental one being a clearly defined goal. Early stakeholder involvement is crucial, because the still imperfect NoMix technology depends on people's goodwill. We reference data sheets, legal documents, etc. and make suggestions for installation, maintenance, and technology improvement. We identify areas for future research necessitating pilot projects and discuss their requirements to optimize the cost-benefit factor. This paper is intended as support to wastewater professionals to avoid the most serious pitfalls when conducting NoMix pilot projects. It contributes to increased interaction between research and real-world application of urban European household innovations.

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Reducing the natural color of membrane bioreactor permeate with activated carbon or ozone

Cited by 13 publications

References 13 publications

The Performance and Fouling Control of Submerged Hollow Fiber (HF) Systems: A Review

The Performance and Fouling Control of Submerged Hollow Fiber (HF) Systems: A Review

Performance of a MBR for the treatment of blackwater

Pilot Projects in Bathrooms: A New Challenge for Wastewater Professionals

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