DECREASING OF WATER TURBIDITY BY CHEMICAL SUBSTANCE USE AND NYMPHAEA LOTUS L. CULTIVATION: A CASE STUDY OF CLOSED WATER SYSTEM IN DHURAKIJ PUNDIT UNIVERSITY นุ

Abstract

This research study focused on reducing the water turbidity through chemical compound usage and Nymphaea lotus L. cultivation. The case study was implemented at the enclosed bodies of water at Dhurakij Pundit University. The main objectives of the study were 1) to investigate the quality of both bodies of water and 2) to study the efficacy of chemical compound and Nymphaea lotus L. in reducing the water turbidity between the two bodies of water. This experimental research examined the quality of water from the body of water near Sala Thammathat and near the Cultural Center. The quality of both bodies of water related to acidity (pH), conductivity, turbidity, dissolved oxygen, 9 a.m. temperature and 3 p.m. temperature were analyzed using one-way repeated measure ANOVA. They were evaluated by Central Laboratory and Greenhouse Complex at Kamphaengsaen Campus, Kasetsart University, Nakhon Pathom. The findings of this research revealed that: 1) The quality of water in both bodies of water had statistically significant difference in acidity (pH), turbidity, dissolved oxygen, and temperature. However, the water condition for both bodies of water was at standard level for living creatures to survive. 2) The efficacy of chemical compound and Nymphaea lotus L. in reducing water turbidity indicated that Nymphaea lotus L. cultivation could reduce the turbidity of water in higher level than using only chemical compound. Based on the research findings, it showed the appropriate method in reducing water turbidity.