Dewatering supernatant aeration
The supernatant or filtrate from the sludge dewatering process is often sent back to the primary treatment. Supernatant usually has a low content of organic matter but a high content of nitrogen. If the nitrogen content of the final effluent is low, the supernatant nitrogen load might affect tha biological process. For this reason the supernatant will need to be aerated separately.
Product overview
Listed products follow the recommendations set by ITT Water & Wastewater. Note that other products may be suitable depending on operating conditions.
Aeration
Flygt Jet aeration
Submersible, self-aspirating jet aerator intended for aerating and mixing of contaminated water. The jet aerator is based on a submersible Flygt pump and a designed ejector system.
Silver Series II membrane
The Sanitaire fine bubble aeration systems with the Silver Series II, 7" or 9" membrane is the most widely used diffuser. It offers significant energy cost savings.
ZS + VSD Oil-free positive displacement blower
The new Atlas Copco ZS + VSD (Variable Speed Drive) is a positive displacement blower of screw type which is the most innovative high efficiency positive displacement blower in the market. The ZS+ range is built as a complete unit, including an intelligent control unit ready to plug and play. This is providing extremely reliable 100% oil-free air with very low noise and small footprint. The efficiency can be 30% or even more than traditional blowers
ZB VSD variable speed turbo blower
The Atlas Copco ZB VSD is a turbo blower with innovative approach to the blower market. Through the integration of revolutionary technologies, the ZB VSD offers unparallel savings in life cycle cost, due to very high efficiency and very low maintenance cost and in addition a small footprint and extremely low noise levels.