Water and Sewage Treatment: Expertise Unlimited

This is the polymer dosing pump and storage tank, for dosing an aluminium based coagulant for colour removal.

We refitted the old polymer dosing pump to a reconditioned IBC, and new downpipe. We also replaced its outgoing line with new twinwall stock.

The polymer pump was rewired to the new control system and interlocked to feed pump operation from its inverter.

Labels: alum, chemical, design, dosing, effluent, engineer, environment, etp, industrial, pharmaceutical, plant, problem, pump, treatment, troubleshooting, wastewater, water

This is the pH correction system, dosing up to 32% HCl and 20% NaOH by means of dosing pumps controlled by the yellow unit in the foreground.

Chemical storage is 2 No. 1000 L reconditioned IBCs.

Dosing lines are twin-wall for safety.

Chemical dosing operation is interlocked to feed pump operation via a feed from the inverter.

Labels: chemical, design, dosing, effluent, engineer, environment, etp, pH, pH dosing, pharmaceutical, plant, pump, treatment, waste, wastewater, water

We have been appointed for a second term as advisors to the Central Procurement Directive in Northern Ireland. Which is nice.

Emergency callout yesterday to problems on a groundwater treatment plant. Didn't take long to diagnose problems with a pressure sensor were inhibiting pump start.

No word back on the three tenders we have out, so had gone fishing. Was glad to be called away, it was hammering it down with rain, thunder and lightning...

Labels: emergency callout, invest ni, problem, pump, treatment, wastewater

Other than designing a solution to the problems of our new pharmaceutical client, I have been reviewing a book for The Chemical Engineer magazine, and looking at carrying out an experiment to determine how well anaerobic digestion might reduce PCB levels in oily sludges.

I am having difficulty at present sourcing a small chopper pump which can be controlled by inverter to provide a better, smoother feed to the pharma client's plant without blocking concerns. No problem getting one with 75mm discharge size or above, but the small ones don't have an over-rated motor, which is recommended for variable speed drive.

The book I am reviewing is "Elements of Environmental Chemistry" by Ronald Hites. Seems like a pretty good little textbook.

The oily sludges I hope to treat with AD have been a problem at a couple of sites I provide technical cover for for years now, and it is getting increasingly difficult and expensive to dispose of them. It would be nice if we can get PCB levels down to non-hazardous numbers by this process. The experiment is fairly quick and dirty, so we should have a rough answer by August.

Something amusing I saw today on the quackery front: truth in alternative medicine at last...

Labels: anaerobic, chemical, chemistry, chopper, degradation, digestion, engineer, environment, oil, PCB, pharmaceutical, pump, sludge