Coagulation (water treatment)

[citation needed] The dose of the coagulant to be used can be determined via the jar test.

For example, evaluating the performance of prospective coagulants or flocculants requires both significant volumes of water/wastewater samples (liters) and experimental time (hours).

For example, the Microscale Flocculation Test developed by LaRue et al. reduces the scale of conventional jar tests down to the size of a standard multi-well microplate, which yields benefits stemming from the reduced sample volume and increased parallelization; this technique is also amenable to quantitative dewatering metrics, such as capillary suction time.

[7] An automated device for determining the coagulant dose is the Streaming Current Detector (SCD).

[4] Coagulant aids (polymers that bridge the colloids together) are also often used to increase the efficiency of the process.