Process Control for Monitoring Disinfection of Municipal Wastewater Effluent with Ozone

Singh, Saileshkumar; Seth, Rajesh; Tabe, Shahram

doi:10.2175/193864712811709076

Cited by 3 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…0.5-0.8 mg O 3 /mg DOC). This ozone dose was chosen because it was the lowest dose that consistently met the LRPCP disinfection requirement of <200 MPN E. coli/100 mL (Singh et al 2012a). The ozonation unit was operated twice per week and ozonated effluent was stored in a capped storage tote.…”

Section: Pilot Plant Designmentioning

confidence: 99%

“…Further E. coli inactivation during ozonation could allow for the disinfection limit of <200 MPN/100 mL to be met consistently for both biofilters by compensating for regrowth with a higher level of disinfection. Singh et al (2012a) ozonated secondary treated effluent from the same wastewater treatment plant and obtained E. coli counts of <10 MPN/100 mL with doses between 0.8-1.4 mg O 3 /mg DOC. Thus, even with up to 1-log regrowth, the E. coli count following biofiltration would be within the disinfection limit for LRPCP.…”

Section: Disinfection and Bacterial Regrowthmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Media on Biofilter Performance Following Ozonation of Secondary Treated Municipal Wastewater Effluent: Sand vs. GAC

Reaume

Seth

McPhedran

et al. 2014

Ozone: Science & Engineering

Self Cite

View full text Add to dashboard Cite

Ozone has been shown to be effective in the transformation of several chemicals of emerging concern that escape the wastewater treatment process, but there is concern whether toxic transformation products are formed. Two parallel biofilter columns with granular activated carbon (GAC) and filter sand following a pilot-scale ozone unit to treat secondary treated municipal wastewater were studied. Results show reduced wastewater genotoxicity following ozonation and further reduction following biofiltration. The BAC biofilter outperformed the sand biofilter in terms of reduction in both organics and genotoxicity. Biofilter performance correlated with biological indicators (dissolved oxygen reduction and effluent E. coli counts) but not with ATP bioactivity measurements. Limited bacterial (E. coli) regrowth was observed in treated effluent from both biofilters.

show abstract

Section: Pilot Plant Designmentioning

confidence: 99%

Section: Disinfection and Bacterial Regrowthmentioning

confidence: 99%

Effect of Media on Biofilter Performance Following Ozonation of Secondary Treated Municipal Wastewater Effluent: Sand vs. GAC

Reaume

Seth

McPhedran

et al. 2014

Ozone: Science & Engineering

Self Cite

View full text Add to dashboard Cite

show abstract

Photocatalytic ozonation of wastewater: a review

2020

View full text Add to dashboard Cite

Applications of Reverse and Forward Osmosis Processes in Wastewater Treatment: Evaluation of Membrane Fouling

Mecha¹

2018

Osmotically Driven Membrane Processes - Approach, Development and Current Status

View full text Add to dashboard Cite

Although reverse osmosis (RO) process is widely used for wastewater reclamation, it requires high amount of energy that has a major effect on the economic effectiveness of the process. Furthermore, RO membranes are susceptible to fouling, which further limits their effectiveness and increases the costs due to the need for frequent cleaning.Consequently, the use of osmotically driven membrane separation processes such as forward osmosis (FO) has gained increasing consideration, although its uptake in wastewater remediation is still low. This is because the FO process, unlike the RO process, is operated by the osmotic gradient between the feed and draw solutions; therefore, it requires minimal or no hydraulic pressure. Hence, it has unique advantages, such as possibility of low fouling, and high water recovery. Nonetheless, the long-standing problem of membrane fouling still remains a major challenge even in the performance of FO processes especially when treating raw wastewaters, which have various contaminants. Furthermore, the mechanism of fouling in FO process has been found to be different from an RO process, and there is need for further studies to elucidate the differences of FO and RO fouling. These aspects are evaluated in this review.

show abstract

Process Control for Monitoring Disinfection of Municipal Wastewater Effluent with Ozone

Cited by 3 publications

References 0 publications

Effect of Media on Biofilter Performance Following Ozonation of Secondary Treated Municipal Wastewater Effluent: Sand vs. GAC

Effect of Media on Biofilter Performance Following Ozonation of Secondary Treated Municipal Wastewater Effluent: Sand vs. GAC

Photocatalytic ozonation of wastewater: a review

Applications of Reverse and Forward Osmosis Processes in Wastewater Treatment: Evaluation of Membrane Fouling

Contact Info

Product

Resources

About