CASE HISTORY
In 1994,the city of Phoenix,Arizona,faced challenges to its water supply.In a desert,water is scarce,and quality is hard to maintain.The city's water department needed to decrease its wastewater's organic nitrogen content,which threatened the river downstream.A study proposed the construction of a wetland environment to receive the treated effluent from the Phoenix sewage plant.Over the next ten years,the city constructed a series of experimental wetlands,leading to the large-scale tres rios-constructed Wetlands Project.By 2010,the constructed wetland encompassed 800 acres and filtered 170 million gallons per day.Besides controlling nitrogen and organic content,the wetland restores groundwater,offers a carbon offset (net CO₂ removed from the atmosphere),and generates a wildlife-rich recreational area.The tres rios wetland now attracts beavers,bald eagles,and bobcats,as well as many human visitors.
Why might many different configurations of wetland have been constructed in order to achieve the desired microbial community and effect?

Question

Quizplus · Accepted Answer

The Answer of CASE HISTORY
In 1994,the city of Phoenix,Arizona,faced challenges to its water supply.In a desert,water is scarce,and quality is hard to maintain.The city's water department needed to decrease its wastewater's organic nitrogen content,which threatened the river downstream.A study proposed the construction of a wetland environment to receive the treated effluent from the Phoenix sewage plant.Over the next ten years,the city constructed a series of experimental wetlands,leading to the large-scale tres rios-constructed Wetlands Project.By 2010,the constructed wetland encompassed 800 acres and filtered 170 million gallons per day.Besides controlling nitrogen and organic content,the wetland restores groundwater,offers a carbon offset (net CO₂ removed from the atmosphere),and generates a wildlife-rich recreational area.The tres rios wetland now attracts beavers,bald eagles,and bobcats,as well as many human visitors.
Why might many different configurations of wetland have been constructed in order to achieve the desired microbial community and effect?

CASE HISTORY In 1994,the City of Phoenix,Arizona,faced Challenges to Its Water Supply.In