Source of Zinc in Industrial Waste

Thanks for the info. It contain answers to the elements used by the 4 panel beaters in that industrial area.

I am doing a report on the pollution (20 pages so far) and the info does come in handy.We have dolomite, wet cement and other flowing into the wetland.
Our law is first world but the enforcement less than 3rd world.

Yes it's always easier to talk the talk than it is to walk the walk....We can only keep on the path and hope to reach our goal one day....Change is hard and slow looking forward and fast and easy looking back....

If you are finding these elements, are they at levels that have a direct negative effect on aquatic or human life? If so, then apparently there will have to be a serious plan to ameliorate this problem.

Zinc can also come from industrial waste water sources where zinc anodes may be employed for sacrificial anodes on water cooled systems. Some older water treatment formulations used to contain zinc ion in solution to take the place of calcium for waters that are naturally soft, or have had the hardness removed artificially, in order to make phosphate based corrosion inhibitors work.

James - No plans exist - This is South Africa - the authority of today don't even know that it is pollution' The e-Coli count in our river is 30000000 parts per 100 ml caused by direct sewage spills and the authority blame commercial farmers for spilling fertilizer.

I wish you luck in your challenge.