The BER-series is submersible self-aspiration ejector designed for aeration and mixing of wastewater. It is composed of a combination of submersible pump and venture-jet based diffuser. The BER-series draws in air and ejects the mixture of air and water through the diffuser. The Ejection produces a single but strong mixing current in the water. It is suitable for pre-aeration in sewage and wastewater treatment, mixing to prevent sludge settlement,supplying oxygen in aquaculture, etc

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