Growth of vetiver grass to improve water quality of community waste pond
2006
Mongkon Ta-oun(Khon Kaen University, Khon Kaen (Thailand). Faculty of Agriculture. Department of Land Resources and Environment) | Santibhab Panchaban(Khon Kaen University, Khon Kaen (Thailand). Faculty of Agriculture. Department of Land Resources and Environment) | Patcharee Therajindakajorn(Khon Kaen University, Khon Kaen (Thailand). Faculty of Agriculture. Department of Land Resources and Environment) | Wanpen Virojanakud(Khon Kaen University, Khon Kaen (Thailand). Faculty of Engineer)
To use vetiver grass for reduce different degree of wastewater from community. Vetiver seedlings os Songkhla-3 ecotype were grown in 25*40 cm. plastic tray then they were tightened together into bigger 1.3*2.7 m. rafts. These floating rafts were treated in the following treatments 1) distance/highest potential for pollution 2) distance/high potential for pollution 3) distance/medium potential for pollution and 4) distance/low potential for pollution. Each distance composed of a set of 3 floating rafts. Results revealed that vetiver grass can grow well in polluted water in the studied conditions. The shoot and root dry weight were 11.7 and 2.6 kg/square m at 4 months, 19.8 and 4.9 kg/square m at 8 months and 16.7 and 5.3 kg/square m at 1 year respectively. Nevertheless, vetiver grass can reduce polluted water best in summer (April) which was the peak of pollution by reducing bad odor. Bad odor from polluted water took place only in the morning while the smell on the afternoon and evening was normal when treated with vetiver. Water qualities also were improved by the treatments of vetiver that was, BOD for distance and potential levels for 1) highest 2) high 3) medium and 4) low were 85, 84, 68 and 76 mg/l respectively while the BOD from polluted source was 398 mg/l.
Show more [+] Less [-]AGROVOC Keywords
Bibliographic information
This bibliographic record has been provided by Kasetsart University