Which component is not found in a typical gas feed chlorinator?

A mixing tank is not typically found in a gas feed chlorinator system because the primary function of a gas feed chlorinator is to introduce chlorine gas directly into the water or wastewater stream in a controlled manner. The equipment involved in this process is designed specifically for the efficient and safe delivery of chlorine gas, and it generally includes components such as injectors to mix the chlorine with the water, flow rate controllers to regulate the amount of chlorine being fed based on the water flow, and rotameters which help to measure the flow rate of the gas.

In contrast, a mixing tank is not necessary in the chlorination process since the injector itself is designed to quickly mix the chlorine gas with the water as it enters the system, ensuring proper disinfection without the need for an additional mixing stage. By understanding the roles of each component in a gas feed chlorinator, it becomes clear why a mixing tank does not belong in this system.