Method for treating cold rolling wastewater and apparatus for treating cold rolling wastewater

摘要

The present invention relates to a cold-wastewater treatment method and a cold-rolled wastewater treatment apparatus therefor. In the cold-wastewater treatment method according to an embodiment of the present invention, acid wastewater containing heavy metals in acid wastewater is collected in a high concentration collection tank, An acid wastewater treatment step in which acidic wastewater that has not been treated is taken to the acid tank; An alkaline wastewater treatment step of receiving alkaline wastewater into an alkali tank; Pure reclaimed wastewater from the pure regenerated waste liquid is sent to the acid tank, pure alkaline wastewater is received into the alkaline tank, and when the capacity of the acid tank and the alkali tank is insufficient, ; A buffer tank transfer step of transferring acidic wastewater and alkali wastewater from the high concentration collection tank, the acid tank and the alkali tank to the buffer tank; And a neutralization treatment step of neutralizing the wastewater received in the buffer tank.