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In: Civil Engineering

1- What may be happen when the activated sludge system hydraulically overloaded or underloaded? What may...

1- What may be happen when the activated sludge system hydraulically overloaded or underloaded? What may be happen when the activated sludge system may be subjected to organic underloading or overloading?

2- What can be occur when the bar spacing is too small and too large? What are important for the operation and maintenance of screens?

3- What are the advantages and disadvantages of ground water and surface water sources?

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