Bürkert improves control of water oxygenation

Water purity is a key factor in a number of industrial processes on sites such as breweries, fish farms and drinking water production. Oxygen is, amongst other things, used for oxidation of the dissolved iron in the raw water. The highly dissolved iron Fe2+ is oxidised to produce the much less soluble Fe3+. This leads to auburn deposits in the raw water which can then be easily filtered to fulfil the drinking water requirements.

The Oxydatorbox is designed to control the airflow, independent of pressure, via a Brkert mass flow controller (MFC), type 8626, which is a compact system consisting of a flow sensor, a controller and an actuator. The MFC is configured using the software supplied, which can also be used for diagnosis and communication with fieldbus systems such as Profibus and Devicenet. This flexible system allows target points to be set as well as read from a remote station.

A pressure-regulating valve controls the incoming air pressure, with a secondary valve designed to protect the Oxydatorbox from back pressure in the event of a loss of air pressure. There is also an option to have a solenoid valve, designed with a slow opening characteristic for opening the air inlet safely via an external signal. The control system can be configured for use with air or pure oxygen, depending on the process requirements.

The Oxydatorbox is available in three different sizes and can be constructed from GRP, steel or stainless steel, depending on the plant requirements, and is protected to IP56. The air pipe fittings are available in ¼", ½" and ¾" as standard, but other options are available on request. Options such as quick air-vent valves, power supplies and flow rate transmitters are also available.

This product from Brkert is designed to provide flexibility, but essentially to save time and costs compared with a fully bespoke system, making it compact, cost effective and easy to apply in order to achieve reliable and accurate performance.

Further information about the Oxydatorbox can be found by visiting the company's website at www.burkert.co.uk.