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Pecod Analyser Measures Chemical Oxygen Demand

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Camlab has launched Pecod, a true on-line monitor that enables accurate real-time analysis of chemical oxygen demand (COS). The Pecod analyser, which is capable of generating a reading every 15min, is said to provide high-quality analysis data of waste or discharge streams. On-line, real-time monitoring of processes enables them to be adjusted in real time to reduce energy use, make downstream treatment more cost-effective and prevent waste of expensive ingredients. The core of the on-line technology is the Pecod sensor, which gives the instrument the ability to analyse samples more accurately than the traditional dichromate method and does not require the use of toxic reagents such as mercury and silver salts. The increased sensitivity of the method enables the measurement of clean water samples with low ppm levels of COD. The sensor consists of a UV-activated titanium dioxide film coupled to an external electrochemical circuit. The high oxidising power of the sensor is said to g...

DTEC Applies Vclad To Chemical-Plant Process Tower

DTEC has completed a multi-column turnkey project at a chemical plant located on the east coast of the UK. The project focus was on the refurbishment of a stainless-steel process tower with a diameter of approximately three metres, which required a corrosion-resistant weld overlay CrNiMo-3 (Alloy 625) onto a stainless-steel base material. DTEC achieved this without incident, using Vclad Weld Overlay technology. Vclad combines digitally controlled synergic welding technology with multi-directional programmable automation. The result is a high quality and productive weld-overlay process that can be applied to many repair and upgrade scenarios, ranging from replacement of original equipment design materials through to the application of corrosion-resistant alloys. Weld procedures are qualified to both ASME and EN standards, and because DTEC holds a library of typical PQRs, it can react to unknown scopes often found during routine turnaround inspections. Due to the flexibility of the Vcla...