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Bacterial Growth Patterns and COD Reduction in Agitated Vessels Treating Polluted Canal WaterwithFermented Products Addition |
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| รหัสดีโอไอ | |
| Creator | Donyaporn Panswad |
| Title | Bacterial Growth Patterns and COD Reduction in Agitated Vessels Treating Polluted Canal WaterwithFermented Products Addition |
| Contributor | Sopa Chinwetkitvanich |
| Publisher | Environmental Engineering Association of Thailand |
| Publication Year | 2565 |
| Journal Title | Thai Environmental Engineering Journal (TEEJ) |
| Journal Vol. | 36 |
| Journal No. | 1 |
| Page no. | 89-99 |
| Keyword | Effective Microorganism (EM), fermented products (FPs), purple non-sulfur bacteria (PNSB), lactic acid bacteria (LAB), wastewater treatment |
| URL Website | https://so05.tci-thaijo.org/index.php/teej |
| Website title | Thai Environmental Engineering Journal (TEEJ) |
| ISSN | 2673-0359 |
| Abstract | Fermented Products (FPs) are mostly solution form compounds produced by the microorganism fermentation of sugar and/orlactoseas carbon and energy sources. In this study, polluted water was taken from Kaja canal in Bangkok City. The experiment with this polluted water were divided in to two parts, that is, the one with sterilized polluted water and anotheronewith non-sterilized polluted water. Both sterilized and non-sterilized polluted waterswere experimented with five different types of commercial FPs. The FPswere added into polluted water (either sterilized or non-sterilized) with the ratio of 1:10,000 by volume as suggested by FP manufacturers. Whereas, the vessels without addition of FP were set up as the controlsto receive scientific data to prove the benefit of FPsapplication, especially in treating polluted water.The mixtures(polluted water and FP)were then aerated through moderate agitation continuously for seven days of operation. Then, samples were taken on Days 0, 1, 3, 5 and 7 for bacterial count, while non-filtered COD (CODT) analysis were monitored only in samples on Day 0 and 7. The growth patterns of total heterotrophsshowed the enhancement of growth especially in sterilized pollute water in comparison to non-sterilized one. This was postulated to be the effect of autoclaving (high temperature and pressure) which made the organic matters be more easily degradable.Besides, the SPC, LABand PNSB growth patterns were similarbetween no FP addition or different FPsaddition, denoting no positiveeffect from the FP addition. For CODTremovals, the reduction ofCODTafter seven-day operation did not show the substantial difference between FPsaddition and the ‘Control’. In brief, when both the bacterial count and CODTreduction were considered, there was no clear benefit of the FP addition to the polluted canal water,regarding its water quality improvement. |
