Removal and growth of microorganisms across treatment and simulated distribution at a pilot-scale direct potable reuse facility

2020 ◽  
Vol 6 (5) ◽  
pp. 1370-1387 ◽  
Author(s):  
Scott E. Miller ◽  
Roberto A. Rodriguez ◽  
Kara L. Nelson
Keyword(s):  
Drinking Water ◽  
Pilot Scale ◽  
Growth Potential ◽  
Advanced Treatment ◽  
Potable Reuse ◽  
Drinking Water Standards ◽  
Simulated Distribution ◽  
Direct Potable Reuse ◽  
Improved Methods

Multi-barrier advanced treatment trains are able to purify wastewater to drinking water standards, but improved methods are needed to better understand microbial concentrations, viability, and growth potential throughout treatment and distribution.

MBR-RO for high-grade water (NEWater) production from domestic used water

2006 ◽  
Vol 1 (2) ◽  
Author(s):  
G.H. Tao ◽  
K. Kekre ◽  
J.J. Qin ◽  
C.L. Ting ◽  
M.H. Oo ◽  
...  
Keyword(s):  
Drinking Water ◽  
Pilot Study ◽  
Membrane Bioreactor ◽  
Shock Loading ◽  
New Technologies ◽  
Pilot Scale ◽  
Integrated System ◽  
High Grade ◽  
Drinking Water Standards ◽  
Reclaim Water

Singapore has been developing new technologies to reclaim water to drinking water standards from domestic used water. The water produced with drinking water standards by dual membrane process is called NEWater in Singapore. After the successful pilot study of membrane bioreactor for water reclamation, MBR-RO integrated system was also studied at pilot scale to investigate the new option of producing NEWater at a more reliable and economical way. A MBR-RO pilot plant with capacity of 20m3/d was used for this study. Settled domestic used water was used for the feed. The pilot study demonstrated that the MBR offered better synergy between membrane and activated sludge process. The new MBR-RO process could produce equivalent or better high grade water (NEWater) and have better resistance to shock loading than the conventional AS-MF/UF-RO from the domestic used water. RO membranes in the MBR-RO process could be operated 30% higher flux than in AS-MF/UF-RO process for NEWater production.

Planning for Direct Potable Reuse: Operational Aspects of an Integrated Drinking Water System

2016 ◽  
Vol 108 ◽  
pp. 48-55
Author(s):  
Benjamin D. Stanford ◽  
William C. Becker ◽  
Jean F. Debroux ◽  
Stephanie K.L. Ishii ◽  
Stuart J. Khan ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water System ◽  
Potable Reuse ◽  
Drinking Water System ◽  
Direct Potable Reuse ◽  
Operational Aspects

The formation and control of ozonation by-products during drinking water advanced treatment in a pilot-scale study

2021 ◽  
pp. 151921
Author(s):  
Yongjing Wang ◽  
Songtao Wang ◽  
Jinglin Li ◽  
Xinyu Yan ◽  
Cheng Li ◽  
...  
Keyword(s):  
Drinking Water ◽  
Pilot Scale ◽  
Advanced Treatment ◽  
And Control ◽  
By Products

scholarly journals Progress on legal and practical aspects on water reuse with emphasis on drinking water – an overview

2021 ◽  
Author(s):  
Ana Silvia Pereira Santos ◽  
Vimbai Pachawo ◽  
Marilia Carvalho Melo ◽  
José Manuel Pereira Vieira
Keyword(s):  
Drinking Water ◽  
Water Reuse ◽  
Decision Makers ◽  
Public Confidence ◽  
Wastewater Management ◽  
Potable Reuse ◽  
Global Evolution ◽  
The Subject ◽  
Water And Wastewater ◽  
Direct Potable Reuse

Abstract The present study highlights the evolution, the progress and the prospects of future practices of water reuse in the world. The objective was to produce a comprehensive timeline on the global evolution and progress of water reuse. This was achieved through the analysis of the state of the art on the subject. The present study is a qualitative research, where three aspects have been considered to highlight the global evolution of water reuse: i) Regulations, Standards, Criteria or Guidelines (RSCG); ii) Indirect Potable Reuse Projects (IPR); and iii) Direct Potable Reuse Projects (DPR). The study focused on both legal and practical aspects of water reuse and considered 3 timelines in the context of RSCG, IPR and DPR: 29 RSCG instruments, institutionalized from 1918 to 2020, where only 4 instruments were solely dedicated to drinking water reuse; 10 IPR projects; 5 DPR projects. To achieve good, effective results, the regulatory framework must support the objectives of a structured water reuse policy in addition to guaranteeing legitimacy and maintaining public confidence. Integrated water and wastewater management, based on technological and scientific advances, has become a relevant aspect for implementation of more adequate measures by decision makers to address future global water challenges.

scholarly journals Fate and persistence of antibiotic-resistant bacteria and genes through a multi-barrier treatment facility for direct potable reuse

2021 ◽  
Author(s):  
Lina Wallmann ◽  
Jörg Krampe ◽  
Josef Lahnsteiner ◽  
Elena Radu ◽  
Pierre van Rensburg ◽  
...  
Keyword(s):  
Drinking Water ◽  
Resistance Genes ◽  
Potable Water ◽  
Resistant Bacteria ◽  
Treatment Facility ◽  
Antibiotic Resistant Bacteria ◽  
Antibiotic Resistant ◽  
Potable Reuse ◽  
Resistance Determinants ◽  
Direct Potable Reuse

Abstract Given the availability of technological solutions and guidelines for safe drinking water, direct potable reuse of reclaimed water has become a promising option to overcome severe lack of potable water in arid regions. However, the growing awareness of the presence of antibiotic-resistant bacteria (ARB) and antibiotic resistance genes (ARG) in corresponding raw wastes has led to new safety concerns. This study investigated the fate of ARB and intracellular and extracellular ARG after each treatment step of an advanced water treatment facility in Windhoek, Namibia. The New Goreangab Water Reclamation Plant (NGWRP) produces drinking water from domestic secondary wastewater treatment plant effluent and directly provides for roughly a quarter of Windhoek's potable water demand. Procedures to study resistance determinants were based on both, molecular biology and culture-based microbiological methods. TaqMan real-time PCR was employed to detect and quantify intracellular resistance genes sul1, ermB, vanA, nptII and nptIII as well as extracellular resistance gene sul1. The NGWRP reduced the amount of both culturable bacterial indicators as well as the resistance genes to levels below the limit of detection in the final product. The main ozonation and the ultrafiltration had the highest removal efficiencies on both resistance determinants.

Advanced treatment for taste and odour control in drinking water: case study of a pilot scale plant in Seoul, Korea

2007 ◽  
Vol 55 (5) ◽  
pp. 111-116 ◽  
Author(s):  
W.H. Joe ◽  
I.C. Choi ◽  
Y.A. Baek ◽  
Y.J. Choi ◽  
G.S. Park ◽  
...  
Keyword(s):  
Drinking Water ◽  
Removal Efficiency ◽  
Tap Water ◽  
Pilot Scale ◽  
Chlorine Concentration ◽  
Advanced Treatment ◽  
Raw Water ◽  
Han River ◽  
Odour Control

Taste and odour problems of tap water in Seoul are attributed to 2-methylisoborneol (2-MIB) and trans-1,10-dimethyl-trans-9-decalol (geosmin), which are the result of metabolism of algae and chlorine for disinfection. This study was carried out to measure 2-MIB and geosmin in the raw water from the Han River, to investigate removal efficiency of GAC and BAC integrated with post-ozonation, and to minimise and quantify the required chlorine concentration as a final disinfectant through the candidate process.

scholarly journals Reliability of pathogen control in direct potable reuse: Performance evaluation and QMRA of a full-scale 1 MGD advanced treatment train

2017 ◽  
Vol 122 ◽  
pp. 258-268 ◽  
Author(s):  
Brian M. Pecson ◽  
Sarah C. Triolo ◽  
Simon Olivieri ◽  
Elise C. Chen ◽  
Aleksey N. Pisarenko ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Full Scale ◽  
Advanced Treatment ◽  
Potable Reuse ◽  
Treatment Train ◽  
Pathogen Control ◽  
Direct Potable Reuse
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