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DOI : 10.17640/KSWST.2014.22.6.43 ,    Vol.22, No.6, 43 ~ 53, 2014
Title
Optimal Phosphorus Loading Rate in Electrocoagulation with Porous Compartment
김광수 Kwang Soo Kim
Abstract
To remove phosphate in 1st clarifier effluent the bench scale experiments were carried out with electrocoagulation process, comparing the existence of porous compartment with it`s nonexistence between positive and negative plates. In case of the nonexistence of porous compartment in electrocoagulation the iron released from positive electrode react not only with phosphate but also hydroxyl ion prodeced from negative electrode. But in case of the existence of porous compartment the released iron from positive electrode react with only phosphate, not contact with hydroxyl ion of negative plate. As a result sludge production in electrocoagulation with porous compartment was decreased to the half of production from noncompartment. In electrocoagulation with porous compartment to remove 1 mg of phosphate was required 5 mg of iron, the optimal HRT for that was 10 min. And also volume loading rate was 1.3 kg P/m3?d for less than 1 mg/L of effluent, 0.3 kg P/m3?d for less than 0.2.
Key Words
electrocoagulation, porous compartment, phosphorus removal, volume loading rate
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