| 摘要 |
<p>The present invention relates to a method for collecting phosphorus from an effluent generated in a petro-chemical process, and more specifically, to a method for collecting phosphorus put into the petro-chemical process again and recycling the collected phosphorus into a fertilizer, etc. to reduce the amount of sludge disposed as waste and to recycling resources. The method for collecting phosphorus from an effluent generated in the petro-chemical process according to the present invention comprises: an aeration step of supplying air by making inflow of water be treated and an activated sludge generated in the petro-chemical process inside an aeration tank; an electrolysis step of electrolyzing the water to be treated by using an electrode installed in the aeration tank; a solid-liquid separation step of separating the sludge discharged from the aeration tank into a solid state and a liquid state; a solubilization step of solubilizing the sludge separated in the solid-liquid separation step; and a fertilizing step of separating fertilizer elements containing phosphorus from the solubilized sludge in the solubilization step and granulating the fertilizer elements. [Reference numerals] (AA) Water treatment subject; (BB) Activated sludge; (CC) Aeration and electrolysis; (DD) Effluent discharge; (EE,NN) Filterate; (FF) Sludge solid-liquid separation; (GG) Solubilization; (HH) First dehydration; (II) Sludge cake discharge; (JJ) Mg / Ca added; (KK) Moisture; (LL) Concentration; (MM) Second dehydration; (OO) Heat dry; (PP) Fertilizer</p> |
