In 1994, the United States Environmental Protection Agency promulgated new rules aimed at reducing the levels of disinfectant byproducts (DBP) in drinking water. Formed from the reaction of chlorine and other disinfectants with naturally occurring organic matter, DBPs are potentially hazardous compounds including trihalomethanes (CHCl3, CHBrCl2, etc), haloacetic acids, and other halogenated species. The new rules also include monitoring the levels of natural organic material in raw water, during the treatment process and in the finished water by measurement of Total Organic Carbon (TOC) concentrations. The proposed rules would regulate allowable TOC levels in the finished water as a function of source water TOC and alkalinity. The EPA also announced an Information Collection Rule (IC) to survey larger treatment systems to assist in the development of the final Disinfection By-Products Rule. The ICR requires extensive monitoring including TOC, and benchscale studies for disinfection byproducts. This paper describes an extensive study to develop a new technique for the measurement of CO2 formed from the oxidation of organic compounds which has also led to the development of a TOC analyzer that is ideally suited for drinking water applications. The analyzer is easy to use, does not require frequent maintenance, purge gases or reagent preparation and the calibration of the new CO2 sensor is stable for 1 year. The analyzer has a wide dynamic range (0.5 ppb to 50 ppm) and can be used for TOC measurement in virtually all types of water samples.
| File Size : | 1
file |
| ISBN(s) : | 0898678315 |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 9 |
| Published : | 01/01/1995 |
