Page 210 - Water and Wastewater Engineering Design Principles and Practice

CHEMICAL HANDLING AND STORAGE 5-13

Pressure relief valve
(relieves at 25 to 50 cm water
pressure) Differential regulating
valve

V-notch
variable
Rotameter orifice
Vacuum gauge Manual
(30 to 100 cm water vacuum) feed rate
Injector vaccum
adjuster
gauge

Chlorine gas
feeder

Standard vacuum
regulator Solution
discharge
check unit

Gas
supply
Remote from
Injector
control module

Automatic
switchoever
vacuum Drain Injector
Legend
regulator relief treated water
check unit supply
(used in pairs) Gas
Water
Gas
supply
Solution

FIGURE 5-5
Flow diagram for conventional chlorinator.