What does demineralisation plant servicing involve?
Within the world of commercial water treatment, there are standard water treatment systems and there are specialist water treatment systems.
As with most things that are more specialised, specialist water treatment systems require specialist maintenance. In this blog, we’re going to focus on what’s required to maintain one specialist water treatment system in particular – demineralisation plants.
But before we do, let’s take a quick look at how demineralisation plants, also known as demin or DM plants, work….
A brief description of how demin plants work
Demin plants are made up of two pressure vessels. One of the vessels contains cation and the other contains anion exchange resins
Step 1 – raw water passes through the cation vessel first, where positively charged ions are chemically exchanged for hydrogen ions.
Step 2 – the water then continues to the anion vessel, where negatively-charged ions are chemically exchanged for hydroxide ions.
Step 3 – the hydrogen and hydroxide ions combine to create pure water.
Unlike standard water treatment systems, demin plants use dangerous chemicals, acid and caustic, to regenerate
It’s therefore vital that these units work correctly; use the right amount of chemicals and that the resin beds aren’t being damaged. If the resin beds are damaged, then this means the resin will need to be replaced, which can cost between £4,000 and £5,000 depending on the size of the unit.
Ideally, demin plants should be serviced at least every six months, but the frequency does very much depend on how hard they’re working. For instance, plant that’s used more heavily needs to be serviced every three months.
The amount of time required for servicing also varies too, depending on the model of the plant and how long it takes to regenerate. Older models that take longer to regenerate can take between six and eight hours to service, whereas newer models can take between three and four.
All of our demineralisation plant servicing is carried out in accordance with our Method Statement, which enables us to make sure our work is carried out consistently and in line with the latest industry guidelines and health and safety requirements.
These are the steps we follow for demineralisation plant servicing:
While it can be tempting to avoid getting your demin plants professionally serviced regularly because they’re not used that much or because you have somebody in-house who looks after them, it’s not advisable.
Not only can it lead to poor water quality, which can create quality control issues and costly errors and downtime, it can potentially result in health and safety issues if too much of the chemicals are being used or, even worse, there’s a chemical leak.
Don’t compromise your outputs or your safety, contact us today for a free site visit. We’ll inspect your demin plant and advise you how long it’ll take to service. Contact us on firstname.lastname@example.org or 0113 232 0005.