by Nik Zwaneveld | Oct 16, 2026 | Uncategorized
Silica and calcite (calcium carbonate) commonly form together in a wide range of waters, particularly at elevated pH. These conditions accelerate silica polymerisation and shift the balance towards calcite precipitation. When the two scales form together, membrane...
by Nik Zwaneveld | Nov 15, 2024 | Uncategorized
This is a great example of the power of the AWC membrane cleaners. This membrane was removed from a ground water treatment plant and expected to be disposed of. Our analysis showed it caked in a thick layer of biological fouling as well as aluminium, calcium (most...
by Nik Zwaneveld | Aug 30, 2024 | Uncategorized
Over the last 15 years Membrane Works have conducted over 100 autopsies and worked to restore those water treatment systems to full capacity. However, in many situations, the correct chemical treatment was not available. We have now partnered with AWC to be able to...
by Nik Zwaneveld | Aug 30, 2024 | Autopsy, Uncategorized
Iron is a very common foulant found on membranes. However, its often combined with other materials including silts and biofouling. In this video we are dealing with a membrane that has a heavy biological film combined with iron fouling. This can occur when colloidal...
by Nik Zwaneveld | Aug 30, 2024 | Uncategorized
In water treatment systems, gypsum scales are not as common as carbonate scales but can be catastrophic when they do occur. Gypsum formation occurs from the simple reaction of calcium ions with sulphate ions. Ca2+ + SO42- => CaSO4 As gypsum has a higher solubility...
