CHEMICALS USED IN THE WATER INDUSTRY

One of the main chemicals used in the water treatment process is chlorine gas. This gas, while being one of the most effective disinfectants for public water supplies, is extremely dangerous to humans and other living species at high concentrations. Chlorine gas is supplied in 150 lb and one ton pressurized cylinders. In the event of accidental leakage, it is important for this situation to be arrested as early as possible to prevent widespread injury. Our well-trained operators know how to use chlorine and contain a chlorine leak.

Lime and alum are two other common chemicals used in water treatment. Lime (calcium oxide, is highly caustic and can cause blisters and severe irritation if exposed to bare skin. Alum, aluminium sulphate, is corrosive and care must be taken to avoid skin contact or inhalation. It will even damage the soles of strong shoes!

One of the most recently introduced chemicals is polyaluminium chloride (PAC). It is used to enhance flocculation and sedimentation in the water treatment process and must still be handled with extreme care.

On water treatment plants our operators and chemical mixers, those most at risk of coming into contact with chemicals, are provided with a range of PPE specially selected to suit the type the hazard they face.

In addition, Material Safety Data Sheets (MSDS) are provided wherever chemicals are used. These provide critical information on each chemical, its characteristics, what would be considered safe limits for exposure, guidelines for transportation, instructions on how to handle spillage and emergency measures in the event of contact.