Product category:
Potable water, test and treatment
News Release from: PCM Pumps | Subject: Lound WTW
Edited by the Processingtalk Editorial
Team on 20 February 2006
Treatment improvements ensure EU
compliance
Recent EU legislation designed to raise potable water quality standards necessitated some updating of the Lound WTW, belonging to Essex and Suffolk Water
Recent EU legislation designed to raise potable water quality standards necessitated some updating of the Lound WTW, belonging to Essex and Suffolk Water Improvements were required to reduce the risk of formation of trihalomethanes (THMs) formed during the treatment process when chlorine mixes with naturally occurring organic material in the water
This article was originally published on Processingtalk on 22 Sep 2005 at 8.00am (UK)
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Chemical dosing equipment for water supplies
Recent EU legislation designed to raise potable water quality standards necessitated some updating of the Lound WTW, belonging to Essex and Suffolk Water
Potato processing production improved
Direct pumping of viscous potato waste to disposal has resulted in improvements to the waste handling procedures at Greenvale in Wisbech, saving costs and improving productivity
A Dissolved Air Filtration (DAF) plant was chosen as the solution because of its proven effectiveness where algae-laden, low turbidity and highly coloured water conditions prevail.
Earth Tech Engineering, who were the process designers for the project, appointed Corby based PCM Pumps to supply and install new chemical dosing equipment, which would be critical to the operation of the new process.
PCM, working in conjunction with Earth Tech, engineered and installed complete ferric chloride, caustic soda and sulphuric acid storage and dosing systems for the newly constructed DAF building on the site.
Each of the PCM supplied systems included two chemical storage tanks and a dosing skid incorporating two Alldos KM Series piston diaphragm dosing pumps in a duty/standby arrangement.
The pumps offer low maintenance leak free operation, owing to the hydraulically actuated diaphragm principle, which also incorporates an internal pressure relief valve as a means of pump overpressure protection.
The dosing skids were pre-wired and fully tested at the PCM factory before delivery to site.
Each skid is fitted with clear PVC splash screens for operator protection; this enables maintenance to one pump and associated dose line components whilst the other chemical dose line remains operational without compromising the integrity of operator protection, thereby providing a true duty/standby dosing system.
Due to their physical size, the six chemical storage tanks (ranging from 15m3 to 26m3 each) were positioned in the new building prior to the roof being installed.
PCM then installed the factory built chemical dosing skid units and completed the installation of all interconnecting pipework, which was fabricated on site by coded welders.
Each system also included the installation of access ladders and platforms, mezzanine floors, chemical splash protection screening, and dual contained tank fill lines.
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