Coagulation and Flocculation – Process Fundamentals

Suspended matter in raw water supplies is removed by various methods to provide water suitable for domestic purposes and most industrial uses. The suspended matter can consist of large solids which settle by gravity alone without any external aids and ‘non-settleable’ material often colloidal in nature. Removal is generally by coagulation, flocculation and sedimentation. The…

What is Corrosion?

Corrosion is the reversion of metals to their natural state by oxidation, an electrochemical reaction that causes a loss of the metal structure. The site where corrosion occurs is called a corrosion cell. Corrosion may take a variety of physical forms. General corrosion occurs when corrosion cells are spread broadly across large surface areas; pitting…

Biocides and Biological Control with Feedwater Chemicals

Broad Spectrum Biocides offer an encompassing solution to microbiological control Biocides can be useful for the control of microbiological organisms which can become very attached to the environment of your water systems be they cooled or chilled or even low temperature closed systems. This can be bad news as some bacteria such as Legionella can…

Choosing your Closed System Corrosion Inhibitor

Corrosion inhibitors for Closed, heating and cooling water systems Corrosion inhibitors are an essential to ensure the longevity and efficient operation of your closed heating or cooling water system. The two main types of treatment for closed systems are nitrate or molybdate based corrosion inhibitors. In certain circumstances using a Tannin based inhibitor may be a better choice if,…