Problem 2. Enhanced suspended solids removal with salts: 25% 1. A large Asian megalopolis on the coast of the Pacific Ocean has a dual water distribution system. The system is split in two parts: the first part is a potable distribution system for drinking and bathing, and the second part is a saltwater distribution system for flushing toilets. What is the rationale for this megalopolis to have these two separate water distribution networks? 2. Do you see a potential for implementing such a system in Los Angeles? What would be the difficulties encountered with the project? (75-100 words) 3. The sewer network in the megalopolis described in 2.1 is not a dual network. At the wastewater treatment plant, wastewater is passed through a primary clarifier to settle out suspended solids. The plant achieves greater removal of suspended solids in the primary clarifier than most plants elsewhere in the world. Why? (25-50 words + additional figure)