At the time of running an industrial wastewater treatment system, the floc that forms could sometimes float. If water handling system comprises floating floc, you see it can be a challenge to eradicate. The floc in point of fact contains the pollutants that are in your wastewater, so if it is not removed before the wastewater is discharged, you might be out of compliance with your discharge permit. There are a lot of things that cause floating floc. Few of the more common reasons are defined below, along with troubleshooting advice that you can use to help you decide what might be causing floating floc in your system.
Water Flow That Is Too High
When the water movement rate is at or near the total flow rate that your clarifier was intended to manage, floc does not have time to resolve in the clarifier like it must. This can source the floc to float. If you have of late increased the flow rate, try lessening it to see if the floc settles down. If you have not improved the flow rate in recent times, you must investigate other causes.
Oxidants Led Into the Waste Stream
Oxidants like Hydrogen Peroxide (H2O2) could cause floc to float. You can conduct a jar test to distinguish whether or not an oxidant is instigating the floating floc. While you do so, look for the floc to be at the topmost of the beaker instead of the bottom. Now and then it can take as long as 15 to 30 minutes to for particles to float. If you sanction that oxidants are beginning the floc to float, you can add a decreasing agent like bisulfate or a proprietary metal precipitant into your waste stream. You must consult your wastewater treatment facilities vendor about the finest procedure for adding decreasing agents to your waste handling program.
Floc That Is Too Light or Too Large
In few cases, floc can turn out to be too fluffy and lightweight in the course of treatment. There are numerous options for amending this. You can attempt using a heavier coagulant, moving to a more compatible polymer, or changing how the polymer is dosed. Moving the polymer dosing process can be as simple as changing the dose rate. You can even modify the polymer concentrations that are being used. For instance, if you use a suspension or dry polymer at 0.3% by capacity, try 0.15% by volume in its place.