Email us at: sales@parsonsuk.com
Or give us a call on 01922 404 318

Executive Summary

Parsons were asked by a major mining consortium, with a site in Zambia, to prepare a design study for the effective treatment of Nitrogen Oxides (NOx) on the gold refining process, at a copper mining facility. The study was taken up and the recommended solution followed.

Challenges

Concentrated Nitric Acid (HNO3) is used in the refining of gold ore remnants, which produces high concentration discharges to the treatment ventilation system, initially estimated at 5000 and later found to be in excess of 50,000 parts per million (ppm).

The discharge from the treatment ventilation system had to comply to the National Mining Inspectorate requirements.

Solution

Parsons designed, manufactured, installed and commissioned a turn-key packed column absorption system.

This was complete with an extract fan, a stack, a chemical storage and dosing system manufactured from polypropylene GRP in accordance with BS 4994:1987 (BS EN 13923:2005, BS EN 13121-3:2008+A1: 2010).

Results

Due to the constraints of the available testing equipment the initial discharge concentrations were significantly underestimated. The absorption package was installed and commissioned. On testing the unit, the percentage removal efficiency was found to be greater than promised, however the discharge levels were still too high due to the exceptional inlet concentrations. The inlet was re-tested with more appropriate equipment giving a more accurate picture. With the revised data Parsons were able to apply their knowledge of scrubbing plant to re-sequence the package with minimum disruption to the client and bring discharge levels down to a level acceptable to all parties.

Parsons offers a range of odour abatement and wet chemical fume scrubbing solutions to suit any problems that may be arising from any industry. We offer a range of plant to buy, but our rental service is recommended as one of the best in the UK.

With our rental plant, we can source and install the right solution much faster than if you were to buy, and we provide maintenance throughout the rental period, which can be long or short term.

Contact us today to find out more.

-->

World Environment Day 2019

9 out of 10 people breathe polluted air. 7 million premature deaths are caused by air pollution each year. Less than half the world’s countries promote pollution control.  These 3 facts have been provided by… read more »

Parsons Fume Scrubber

Parsons’ Rapid Response Rental Might Be Your Best Solution

Parsons have over 45 years of experience in fume, gas and odour scrubbing and chemical absorption. During this time, we’ve been able to learn which of our solutions best suit our customers. While this obviously… read more »

Parsons - 1 weeks ago
Parsons provides our clients with a complete solution to reduce their air pollution. Read our full article on… https://t.co/3s4PcIVXpk
0 Retweets Reply
Parsons - 1 weeks ago
Parsons recently received a call from a customer situated in #Wales who were having issues with an #odourscrubber.https://t.co/kurhJSf04O
0 Retweets Reply