This powerpoint presentation begins by providing a brief overview of the water treatment plant in Hutchinson, Minnesota. Key study issues include the following: exceeding copper corrosion standards as defined in the
Lead and Copper Rule (LCR) in distribution systems;
city under Enforcement Order from Minnesota Department of
Health,
90th Percentile Cu = 1.8 to 2.3 mg/L >> 1.3 mg/L required;
high iron concentration
- 2.6 mg/L Fe;
biological growth occurring within distribution system;
disinfection byproduct formation
- meet projected Stage 2 requirements (40THM / 30HAA); and,
chlorine demands were significantly different between the
two treatment trains using the same water supply
- West Plant: Chlorine Demand ~ Chlorine Dosage
- East Plant: Chlorine Demand ~ 7+ times Chlorine Dosage. Two treatment trains are presented with finished
water pH adjustment, along with biological filtration process
requirements, biological filter start-up, and biological filtration benefits. Includes tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 4.9 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 20 |
| Published : | 11/01/2008 |
