SYSTEM OF A HYDROPONIC CULTURE WITH BACK WASHING APPARATUS USING WASTEWATER AND BACK WASHING METHOD OF SAME

摘要

The present invention relates to a circulating hydroponic cultivation system and a backwash method capable of backwashing using drainage, and more particularly, the drainage to be purified can be used for backwashing, and the structure is concise and simple. It relates to a circulating hydroponic cultivation system and a backwashing method capable of backwashing using drainage that can reduce operating costs and maintenance costs. The circulation hydroponic cultivation system capable of backwashing using the drainage according to the present invention is a filtration system for purifying drainage, comprising: a drainage storage tank in which drainage is received and stored; A pressure pump that sucks and pressurizes the drainage stored in the drainage storage tank; A water treatment tank in which the drainage liquid pumped by the pressure pump is introduced and a water treatment agent is embedded; A drain supply line connected between the drain storage tank and the water treatment tank and installed with the pressure pump; And a filtered water discharge line connected to the water treatment tank and through which the filtered drainage is discharged, and a backwash water supply line connected to the drainage supply line to supply drainage to the water treatment tank. A backwash water recovery line connected between the drainage storage tank and the water treatment tank and supplied to the water treatment tank to recover drainage used for backwashing; And a backwash control valve unit opened and closed to supply drainage to the backwash water supply line when backwashing the water treatment tank.