1. A current issue in the Colorado River Basin is A. the cost of diversion of wa
ID: 478289 • Letter: 1
Question
1. A current issue in the Colorado River Basin is
A. the cost of diversion of water for irrigation purposes has become prohibitive. Secondary sewage treatment 5 Secondary Primary sewage treatment Aeration tank Chlorinator (disinfectionl: sedimentation tank: Cleanest water taken from Wastewater mixes with air (oxygen) to taken surface of secondary support bacteria that from surface of sedimentation tank and Primary sedimentation consume suspended aeration tank; disinfected by chlorination Raw sewage enters organic wastes. remaining particles tank Suspended or ultravioletlight. from munici settle, solids sink to bottom sewage system. Screen Chlor Treated water discharged to Large debris Aeration a river or other oved, sand sedimentation natural water tank settles to bottom. tank Sand Activated Primary sludg Secondary sludge SIudge o Digested sewage sludge sludge digester Sludge from primary and secondary disposed of in a sani sedimentation tanks pumped to a landfill, incinerated, or converted into fertilizer. digester, where bacteria consume organic wastes. Copyright John Wiley &Sons;, Inc. All rights reserved.Explanation / Answer
1.The national treasure of America west that is the Colorado River has an uncertain future. Large supply-demand imbalance is there.
The main factors contributing to this imbalance are:
Hence the answer is optionB. water diverted for irrigation and a growing population is depriving downstream areas of water.
2. Answer is option B: That is 4 and 8.
In aeration tank waste water mixes with air to support bacteria that consume suspended organic waste.
Even in sludge digester also bacteria plays an important role to digest the the organic waste released from primary and secondary stages.
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