THM's have been lowered from 80 to 25-30 since this system has been used during the last 8 years. In order to reduce this fouling, ammonia is also added to the mixture and this has been the most successful method for treating the algae rich lake source water. Chlorine dioxide is obtained by mixing Sodium chlorite with liquid chlorine under pressure. This insures uniform mixing. High pressure liquid chlorine is used in producing chlorine dioxide.
Sodium chlorite is mixed through the CD generator above.
This is a row of transfer pumps that move water from the chloramine treatment process to the gravity rock filtration beds. Every fifteen minutes, water from the 100,000 gallon capacity backwash water tank is sent up through these filter beds to remove impurities that have accumulated with in the bed. Several inline measurements are made along various points within this facility. Water is then stored in underground water tower tanks. Current capacity in five underground tanks is 9 million gallons.