Advantages:• Effective systems are in high-nitrogen treatment and therapy as well.• Low construction costs.Disadvantages:• Expenses incurred in the construction, and high action. Use more space.• The controller must have a knowledge and understanding of the system as well.• This type of treatment system to be complicated due to the need to have a controlled environment, and various physical characteristics appropriate to the operation and to increase the amount of microorganisms to make the system effective in most treatments.• If you do not have to care enough to make the device, such as a damaged more easily.
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