Typical Eco I and Eco II gas voidage diagrams are presented in Figure 4 for a 133-m (435-ft) deep shaft with an ... More air is needed proportionally in the riser of an Eco II shaft due to the aforementioned introduction of wastewater and return anbsp;...
|Title||:||Proceedings, Seventh United States/Japan Conference on Sewage Treatment Technology|
|Author||:||United States. Environmental Protection Agency. Office of International Activities, United States. Environmental Protection Agency. Office of Research and Development, Municipal Environmental Research Laboratory|