Described herein are systems and methods for removing boron from water. According to certain embodiments, an aqueous input stream comprising boron and at least one suspended and/or emulsified immiscible phase is supplied to a water treatment system comprising a chemical coagulation apparatus, a suspended solids removal apparatus, and a boron removal apparatus. Within the chemical coagulation apparatus, an amount of an inorganic coagulant, an amount of a strong base, and an amount of a polyelectrolyte may be added to the aqueous input stream to form a chemically-treated stream. In some embodiments, the chemically-treated stream, which may comprise a plurality of floes, may be directed to flow to the suspended solids removal apparatus. Within the suspended solids removal apparatus, at least a portion of the floes may be removed from the chemically-treated stream to form a contaminant-diminished stream having a lower concentration of contaminants than the aqueous input stream.
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