Open Bund Tanks for Chemical Dosing Systems are used for storage of dosing and treatment chemicals to comply with HSE requirements for the secondary containment. Secondary containment bunds contain a minimum of 110% of the volume of the corresponding chemical tank providing a containment area in case a tank, pump or an associated fitting fail –more details on the HSE’s advice is available here.
Due to the nature of the chemicals being stored, the chemical dosing tank, fittings, flanges and associate chemical dosing equipment need to be checked with compatibility against the chemical. Examples of chemicals that are stored in chemical storage tanks are for wastewater and swimming pool dosing include; sulphuric acid, hydrochloric acid, sodium hypochlorite, sodium hydroxide, ammonia solution, ferric sulphate and chloride, aluminium sulphate and polymers.
Other chemicals are used as neutralizing acids or bases are sodium hydroxide and sulfuric acid. To raise the ph. of wastewater prior to treatment include sodium carbonate (soda ash), ammonium hydroxide, calcium hydroxide (lime) or magnesium hydroxide.
Typical Specs for Dosing Chemical Tanks
The bunded chemical storage tank bunds contain a minimum 110% volume of the inner tank with the integral bund. Open bunds are often used for inside installations for the single skin tank or closed bunds with a rain skirt which can be used outside.
Camlock fill pipe inlet with dust cap
Suction nozzle for dosing pumps
Cat & mouse level gauge or provision for ultrasonic
Chemical Tanks – 1.5 or 2SG – depending on the chemicals being stored
4″ fabricated mushroom vent
These tanks are also used for boiler water treatment chemicals for tried and tested chemicals such as chemical oxygen scavenger, alkalinity builder and polymer sludge conditioner.
Enduramaxx Open Bund Tanks for Chemical Dosing Systems
Our chemical storage and treatment tanks are available as a round single wall or bunded tanks up to 30,000 litres, rectangular tanks with open bunds for secondary containment. The bunded chemical tank is chemical resistant and UV stabilised the tanks are designed for many years of use for storage and handling of chemicals. For more details on tanks, bunds and mixing systems – please get in touch today. Why not follow Enduramaxx on LinkedIn here.