Parsons Water Treatment

Chemical Storage
Parsons design, manufacture and install a wide range of chemical handling and dosing plant for the storage, distribution and management of corrosive liquid chemicals.

Systems are available for:
	Hydrochloric Acid	Sodium Hydroxide
	Ferric Chloride	Sodium Hypochlorite
	Hydrogen Peroxide

Chemical Stripping/CO2 Degassers
In a number of Water Treatment plants there is a requirement to remove excess CO2 from water streams that can effectively be carried out by air stripping the CO2. Parsons manufacture a standard range of CO2 Degassers for flowrates from 2 to 45 m3/h for larger duties a range of bespoke units up to 300m3/h are available, the units are available as induced draught or forced draught and can be provided with running and standby fans.

The units are manufactured from Polypropylene reinforced externally with GRP.

Parsons have been supplying equipment and services to the water treatment industry since 1969 including CO2 Degassing Towers for the removal of excess Carbon Dioxide, Parsons Towers reduce inlet concentrations from 300 ppm to less than 5 ppm CO2 expressed as CaCO3. The units are available in a standard range of induced type rated at 2 – 45 m3/h. Larger duties for specific flowrates up to 300 m3/h have been built in both forced draught and induced styles.

Chemical / Water Storage
	Water Storage and Chemical Storage up to 280 m3
	Vessels are manufactured from PVC, Polypropylene, Acrylic, PVDF, ECTFE, FEP, PFA reinforced externally where required with GRP. In accordance with standards such as ASME X and DVS 2205 are also available on request.
	Vessels are available in rectangular/square styles in complete or sectional design, where space or processes prefer circular vessels up to 4.5 metres diameter 18 metres tall can be produced. Circular vessels tend to be vertical axis but if preferred Parsons can supply Horizontal axis vessels complete with support cradles. Full delivery, installation and commissioning services are available using our own experienced site technicians supervised by our Qualified Engineering Staff.

Vessels are available in a wide range of configurations and supplied with a variety of accessories to accommodate bespoke requirements:
	Totally enclosed or lids	Access Ladders
	Man way Entrance Points	Tanker Filling Pipework
	Hold Down Feet	Nozzles
	Contents Gauges	Storage Bunds
	Lagging	Remote Alarm Systems
	Bulk HCL Storage Facilities with Tanker Offloading HCL Scrubbers	Lifting Lugs (Certified and Tested to comply with CDM Regulations.)
	Semi bulk Intermediate/Day Tank Chemical Storage up to 6000 litres	Discharge Pipework/ Metering/Distribution Systems
	Ultra Pure Water Storage Vessels fabricated from PVDF for the Semiconductor Industry.	Plastic Pipework Installations in PVC, ABS, PP, PVDF, and PTFE
	Heaters	Carbon Filters and Pressure Vessels

Parsons can undertake total engineering packages cover all aspects of the project:
	Front End Design Study	Construction Management
	Process Engineering	Installation
	Mechanical Engineering	CDM Compliance
	Exhaust Ductwork	Commissioning
	Supporting/Access Steel Structures	Documentation
	Civil Requirements	Handover
	Site Surveying	Annual Inspection and Vessel Certification

The above list details the full services offered by Parsons and the client can select which elements they wish Parsons to provide and which they prefer to resource in-house, clear identification of responsibilities at an early stage of a project ensures project completion on time and on budget.