What are the advantages and disadvantages of using Disinfect

What are the advantages and disadvantages of using Disinfectant in Wastewater Treatment?

Solution

Ans. Disinfection may be defined as process of destruction of harmful microorganisms and bacteria. Chemical disinfection includes addition of disinfectants such as chemicals . Clorination is widely used method for chemical disinfection.
Advantages

- control of diseases by killing harmful micro-organisms.

- residual amount of some disinfectants deals with future contamination such as chlorine.

- also oxidises remaining organic matter and hence water is free from organic matter as well as bacterial growth is controlled

- Noxious odours can be removed using chlorination.

Disadvantages

- these are generally from halogen group and large amount of these compounds may be harmful or toxic for humans.

- some disinfectant such as ozone may help in corrosion of pipe. so special pipe material has to be used.

- this whole process comes to be very costly.

- Long term effects of releasing disinfected effluents are yet to be known . so , a little uncertainty here.

- Some