The invention discloses a magnetic coagulation
water treatment method for in-situ magnetic seed separation and reuse. The method adopts a reaction tank to carry out the following steps: injecting
sewage into the reaction tank, and adding magnetic seeds, a coagulant and a coagulant aid to carry out magnetic coagulation treatment; after the magnetic coagulation treatment is finished, starting an
electromagnet at the bottom of a
sludge bucket, discharging treated
sewage after static
settling, and then detecting the concentration of
sludge in the
sludge bucket; if the sludge concentration is smaller than the set threshold value, the steps are repeated, the
sewage is injected again for magnetic coagulation treatment, and magnetic seeds do not need to be added in the treatment process; and if the sludge concentration is greater than or equal to a set threshold value, carrying out in-situ magnetic seed separation and
recovery through pH value adjustment, deflocculation, magnetic mud separation and mud
discharge, then repeating the previous steps, injecting the sewage again for magnetic coagulation treatment, and synchronously supplementing magnetic seeds in the treatment process according to the loss amount during magnetic seed
recovery. The magnetic coagulation
water treatment method for in-situ magnetic seed separation and reuse provided by the invention is short in process flow, high in
sewage treatment efficiency, simple in equipment and low in operation cost.