Comparative Study on the Determination Methodology of Total Suspended Solids by Using the Microwave and the Laboratory Standard Methods
2019 年 10 巻 1 号 p. 82-87
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2019 年 10 巻 1 号 p. 82-87
Total Suspended Solids (TSS) was an important parameter used to control biomass in an aeration tank during the activated sludge process also known as Mixed Liquor Suspended Solids (MLSS). The weighed standard glass-fiber filter and the residue retained on the filter are dried to a constant weight at 103 to 105 °C. There were major steps in a standard method, which take time to analyze. Therefore, microwave method was an attractive technique because rapid determination of total suspended solids. This comparative study was made on the analysis of total suspended solids between the use of microwave and standard method of American Public Health Association, American Water Works Association, and Water Environment Federation (APHA, AWWA & WEF). It was conducted to examine the appropriate condition of microwave power 800-watt at two levels including medium-high and high levels at 10, 15 and 20 minutes. Synthetic wastewater was prepared by Cellulose power of thin layer chromatography at concentrations 100 mg/l. The result show on that the optimum condition was using high level at 10 minutes. Mean of total suspended solids was at 97.39 mg/L. The sample of wastewater was collected from Conventional Activated Sludge, CAS of Sakon Nakhon Hospital. After comparison, it was found that total suspended solids with microwave and standard method had an average concentration at 156.2 and 150.4 mg/L, respectively. There was no significant difference of total suspended solids from the two methods at a 95% confidence level.
