7409ENG Industrial Water and Wastewater Treatment - Engineering Assignment Help

1. (16 marks) A processing industry generates an organic wastewater stream of 600 kL/day and it is to be treated on site. It is required that approximately half of the effluent volume is to be discharged into domestic wastewater system for further treatment and the other half of the effluent volume is to be reused for upstream processes. The water quality requirement for the water to be reused is to be similar to those required for drinking water. The major compositions of the wastewater stream are given below. Design a suitable treatment process for the onsite treatment. Present your answer in (a) a schematic process flow diagram, which shows the flow rates and BOD values of all key process streams, and (b) for each key processing unit in your design, briefly explain the reasons for its inclusion in the treatment process. Your design must be theoretically sound and practically feasible.

BOD (mg/L)

1000 - 1250

Suspended solids (mg/L)

5-50

pH

3.0 - 5.0

2. (6 marks) Briefly explain the concept of acidity as a water quality parameter and discuss the implications on water treatment if the acidity of the raw water is high.

3. (6 marks) Briefly explain the principles of reverse osmosis and its areas of applications in industrial water/wastewater treatment.

4. (6 marks) A batch adsorption system is to be used to reduce a pollutant concentration in water from C1 to C2 (mg/L). The adsorbent to be used has an adsorption isotherm in the form of q=kC^1/2, where q (mg/g) is the adsorbent phase concentration, C (mg/L) is the water phase concentration of the pollutant and k is a constant. Derive an equation that can be used to calculate the amount of adsorbent need to treat each unit volume of water (dosage in g/L).

5. (6 marks) List and briefly explain two (2) treatment options for water and/or wastewater streams from industry sources that contain trace/low levels of

1. heavy metal ions
2. 2.synthetic organic compounds.

This Engineering  Assignment Help has been solved by our Engineering experts at onlineassignmentbank. Our Assignment Writing Experts are efficient to provide a fresh solution to this question. We are serving more than 10000+ Students in Australia, UK & US by helping them to score HD in their academics. Our Experts are well trained to follow all marking rubrics referencing style.