Water treatment systems and methods

A water treatment system comprising:

• at least one softening system configured for receiving a raw feed of the water;
• and
• a two-stage clarifier proximate to and in fluid communication with the at least one softening system, the two-stage clarifier comprising:
• a generally rectangular enclosure comprising two longitudinal side walls, two end walls, and a floor extending therebetween and defining an open space therein;
• a first baffle extending between the side walls and upwardly from the floor for a substantial portion of a height of the side walls, the first baffle sealingly engaged with the side walls and floor and with one end wall defining a first settling zone;
• a second baffle extending between the side walls and downwardly from top edges thereof for a substantial portion of the height of the side walls, the second baffle disposed proximate to and spaced from the first baffle and defining a transition zone between the first baffle and the second baffle, a second settling zone between the second baffle and one of the end walls, and a passageway between the transition zone and the second settling zone proximate the floor;
• and
• a lamella plate assembly disposed within the second settling zone,
• wherein the water treatment system further comprises at least one osmotically driven membrane system in fluid communication with and disposed downstream of the two stage clarifier,
• wherein the at least one osmotically driven membrane system comprises at least one forward osmosis system in fluid communication with and disposed downstream of at least one reverse osmosis system and configured for receiving a retentate stream from the at least one reverse osmosis system, and
• wherein the at least one forward osmosis system comprises a combined forward osmosis membrane and electrodeionization membrane.