Methods and devices for testing water

摘要

Methods and systems for testing fluid samples include a diffused air flotation (DAF) system and a jar. The jar includes a diffuser for injecting the diffused air into the jar and a tap for drawing a fluid out of the jar.

主权项

1. A method of testing a liquid sample, comprising:
introducing the liquid sample into multiple jars;treating the liquid sample in the jars with at least one chemical agent to induce flocculation in the liquid sample, wherein the liquid sample in each jar is treated with a different dosage of at least one chemical agent;
comparing the liquid samples in each jar to determine a dosage of the at least one chemical agent that results in a predetermined level of at least one of: (i) flotation rate, (ii) floc separation, (iii) clarity, and (iv) turbidity; agitating the liquid sample in each jar after treating the liquid sample with at least one chemical agent selected to cause flocculation of solids in the liquid sample; introducing dissolved air and carrier water into the liquid sample in each jar to float floc to a liquid surface in the jars; drawing a supernate sample at a height lower than the floating floc from each jar after introducing dissolved air and carrier water into the liquid sample; and evaluating each supernate sample for at least turbidity.