Water quality improvement device of waste water treatment plant effluent water

摘要

TECHNICAL FIELD The present invention relates to a wastewater treatment apparatus for purifying wastewater through various stages of treatment, and more particularly, to a wastewater treatment apparatus using an activated sludge process, in addition to an improvement apparatus for improving the quality of effluent water. Conventionally, the wastewater treatment apparatus using the activated sludge method has problems such that flocs converted into microorganisms are not treated even during normal operation, wastewater is discharged with almost no treatment in the event of impact, bulking and lasing, The object of the present invention is to provide a water quality improving apparatus which is excellent in effect at a small cost by adding a discharge tank having an oxidation trench and an upward flow filtration layer to a wastewater treatment apparatus by the conventional activated sludge method of the present invention. The summarized construction of the present invention conceived for this purpose is a known wastewater treatment apparatus including a settling tank 1 in which a metering amount 5 having a crushing layer and an outflow structure 2 are formed in the settling tank 1 The treated water is introduced from the bottom of the discharge tank 3 having the crushed stone filtration layer 9 and the air column 7 is provided in each of the crushed stone layers. In operation, a biofilm is formed in the crushed stone layer, By seeding earthworms, algae, clusters and crustaceans and cultivating buttercups, the biofilm is flocked by a filtration mechanism that forms bridges, stabilizes by breathing the supplied oxygen, The ecosystem treatment by the chain can be done at the same time, and the water quality of the effluent water can be remarkably improved.