Can the conductivity of water increase with more dry matter in the aeration tank?
asked 28 November 2018 asked by WWSteev (1520 points)
Conductivity is a function of the salinity of the water, i.e. the amount of dissolved salts.It is likely that if your centrifuge has stopped, some of the dry matter has partially dissolved, increasing salinity and therefore conductivity. To confirm this hypothesis, you should also measure the conductivity at plant inlet and not just at outlet. Another possibility: conductivity increases rapidly in relation to chloride content. Are you sure there was no accidental release of chloride into your WWTP? Here again, measuring the conductivity at inlet would confirm this.Finally, still on the subject of chloride, do you use either ferric chloride or aluminum chloride to neutralize phosphorus?If so, over-injection may have occurred, resulting in a too high chloride concentration.
and of the temperature
Are you by the sea? If so, there may be saltwater infiltration from the network.Also check to see if there are any industrial customers connected.