Question 1:

(a) State three advantages and three disadvantages of recycling.

(b) Discuss the potential health risk which composting can pose to workers or to those located near a facility.

(c) Within the waste industry incineration is the controlled high temperature destruction of combustible material. Consider the following two types of emissions produced by incinerators:

(i) Gas phase emission

(ii) Particulate emission

State one possible major problem associated with each emission. Provide relevant solutions to the problems stated.

Question 2:

(a) List and explain five sources of solid waste within a community. You are required to provide examples of the types of solid waste generated from each source.

(b) Describe fully the occupational hazards associated with handling of solid waste.

(c) Provide short notes on the following properties of SWM:

(i) Moisture content

(ii) Field capacity

(iii) Proximate analysis

(iv) Elemental analysis