Effects of the filtration flux and pre-treatments on the performance of a microfiltration drinking water treatment system

2006 ◽  
Vol 6 (4) ◽  
pp. 81-87 ◽  
Author(s):  
Hae-Nam Jang ◽  
Dae-Sung Lee ◽  
Min-Koo Park ◽  
Sun-Young Moon ◽  
Soo-Young Cho ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Membrane Filtration ◽  
Drinking Water Treatment ◽  
Treatment System ◽  
Raw Water ◽  
Water Treatment System ◽  
High Turbidity ◽  
Pre Treatment ◽  
Filtration Flux

This study was performed to investigate the effects of flux and pre-treatment on the operation performance of a microfiltration drinking water treatment system through a pilot scale operation using lake water as raw water. The pilot plant had a capacity of 500 m3/day with a five membrane module and was operated for 1 year to carry out the experiments for the variation of filtration flux, physical cleaning conditions and pre-treatment conditions. Also, an experiment was performed when raw water with high turbidity flowed into the system as well as that pretreated with powdered activated carbon (PAC). When the MF system was operated with filtration flux of 2 m3/m2 day, it could not be operated more than 500 h due to the continuous TMP (Trans-membrane pressure) increase. In case of filtration flux of 1 m3/m2 day, the system could be operated continuously for more than 1300 hours without the increase in the TMP. During this experimentation period, raw water with high turbidity (above 400NTU) was fed into the membrane system. Therefore, the TMP increased by approximately 4.90 kPa compared to the TMP for the previous raw water with lower turbidity. In the case of the PAC pretreated membrane filtration process, the TMP tended to increase slightly. However, the TMP was reduced by performing coagulation and mixing after injecting PAC.

scholarly journals Designing The Improvement of SPAM UNS Water Dispenser Service Quality

2020 ◽  
Vol 19 (1) ◽  
pp. 22-29
Author(s):  
Yosua Natalianto ◽  
Eko Pujiyanto ◽  
Wahyudi Sutopo
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Service Quality ◽  
Drinking Water Treatment ◽  
Academic Community ◽  
Treatment System ◽  
Water Treatment System

SPAM (Sistem Pengolahan Air Minum or Drinking Water Treatment System) UNS was established in 2015 to meet the drinking water needs of the UNS academic community by providing 129 dispensers and water tap machines spread across buildings at UNS. A survey conducted by UNS students in 2017 showed that 54 % of students were not sure of the quality of UNS SPAM water. So the service quality questionnaire was distributed to 160 UNS students randomly and it was found that only 3 % of respondents stated that they used SPAM UNS water dispenser very often. Processing results shown the highest gap value is in the reliability dimension, with CTS namely cleanliness and flow of water. From the survey regarding the cleanliness and flow of the water carried out the DPMO value of the process was 332,589 (1, 930 sigma) . Recommendations for improvement are in the form of several SOPs to improve the cleanliness and quality of SPAM UNS water dispenser services.

Ground-tested principles of designing a robust drinking water treatment system

2021 ◽  
Vol 14 ◽  
pp. 100103
Author(s):  
Ravindra Sewak ◽  
Dan Bena ◽  
Poonam Sewak ◽  
Shveta Mahajan
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Drinking Water Treatment ◽  
Treatment System ◽  
Water Treatment System

scholarly journals Decentralized solar-powered drinking water ozonation in Western Kenya: an evaluation of disinfection efficacy

2020 ◽  
Vol 4 ◽  
pp. 56
Author(s):  
Colin Hendrickson ◽  
Jared Oremo ◽  
Oscar Oluoch Akello ◽  
Simon Bunde ◽  
Isaac Rayola ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Surface Water ◽  
Drinking Water Treatment ◽  
Treatment System ◽  
Coliform Bacteria ◽  
Small Scale ◽  
Water Treatment System ◽  
E Coli ◽  
Solar Powered

 Background: Decentralized drinking water treatment methods generally apply membrane-based treatment approaches. Ozonation of drinking water, which previously has only been possible at large centralized facilities, can now be accomplished on a small-scale using microplasma technology. The efficacy of decentralized solar-powered drinking water treatment systems has not previously been described. Methods: We established a 1,000L decentralized solar-powered water treatment system located in Kisumu County, Kenya. Highly contaminated surface water is pumped to the treatment system, which includes flocculation and filtration steps prior to ozonation. Turbidity, total coliform bacteria, and E. coli were measured at various stages of water treatment, and bacterial log reduction values (LRVs) were calculated. Results: Forty-seven trials were conducted in which1000L of water were flocculated, filtered, and ozonated for 180 minutes. Baseline turbidity and E. coli concentrations were reduced from a median of 238 nephelometric turbidity units (NTU) and 2,419.7 most probable number/100mL, respectively, in surface water to 1.0 NTU and undetectable E. coli after ozonation for 180 minutes. The median E. coli LRV was 3.99. Conclusions: The solar-powered, decentralized water treatment system that utilizes ozonation for disinfection was founded to reduce E. coli by more than 3 log-orders of magnitude despite the high turbidity of the raw water. Further research is needed to characterize limitations, scalability, economic viability, and community perspectives that could help determine the role for similar systems in other settings.

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