Process Description
Prior to 1960, zoo exhibits featuring sea lions and other water animals used only fresh water. These exhibits did not have any water treatment systems, so they relied on a "dump and drain" method to insure clean water in the exhibits. This means that three thousand, six thousand, or more gallons of water from each exhibit was dumped every 3-5 days and fresh water was used to fill it back up. Historically, paddlewheels had been used for the flow requirements. However, the effluent water is dirty and clogs the rotor, requiring frequent maintenance. More recently, zoos are beginning to install water treatment units for cleaning and recycling water, saving thousands of dollars on fresh incoming water and penalties for dumping waste into the sewage systems. Paddlewheel or magmeter flow sensors are suitable for this application. Temperature, pH and ORP measurements may also be monitored for various exhibits.
Measurements in zoo water exhibits:
Flow: Monitor water turn over through the filter system
pH: Monitor and control the water quality for healthy animals
ORP: Monitor and control the disinfectant strength of the ozone or chlorine injected in the system
Temperature: Monitor the temperature to maintain correct temperature of water environment |
