6.What is the role of anaerobic bacteria in W.W.T.P? 7.Name two chemicals to disinfect water? Share with your friends Share 0 Raghuram Rajan answered this 6. they help in decomposition of sludge7. chlorine and ozone 0 View Full Answer Nikhil answered this The anaerobic bacteria decompose the sludge. The Two chemical are - Ozone and Chlorine 0 Akanksha Chauhan answered this anaerobic bacteria decompose the sludge into humus- a dark coloured substance.two chemicals that are use to disinfect water are- ozone and chlorine. 0 Srishti Singh answered this anerobic bacteria is used to decompose slude in a WWTP. two chemicals used are chlorine and ozone. 0 Monark Parekh answered this Anerobic bacteria is used to decompose slude in a WWTP. The 2 chemicals are nitrogen & phosparous 0 Ria Varghese answered this Anaerobic bacteria helps to deocmpose sludge in the WWTP. the two chemicals to disinfect water are Chlorine and Ozone 0