JPH02104896U

JPH02104896U -

Info

Publication number: JPH02104896U
Application number: JP995289U
Authority: JP
Priority date: 1989-01-31
Filing date: 1989-01-31
Publication date: 1990-08-21

Description

[Brief explanation of drawings]

第１図乃至第５図は本考案の一実施例を示す図
であり、第１図は活性汚泥沈澱池の模式図、第２
図はスカム流出孔を部分拡大して示した縦断面図
、第３図は第２図の右側面図、第４図はスカム流
出孔の模式図、第５図は可動堰の移動量と流出水
量との関係の一例を示す線図である。第６図乃至
第８図は説明用図であり、第６図は汚水処理装置
のブロツク図、第７図は沈澱池の模式図、第８図
はスカムの浮遊状態を示す模式図である。１……原水供給管、２……沈澱池、８……スカ
ムコレクタ、２１……整流筒、２３……スカム流
出孔、２４……可動堰、２５……整流筒スカムス
キマ。 Figures 1 to 5 are diagrams showing one embodiment of the present invention, in which Figure 1 is a schematic diagram of an activated sludge sedimentation tank, and Figure 2 is a schematic diagram of an activated sludge sedimentation tank.
The figure is a partially enlarged vertical cross-sectional view of the scum outflow hole, Figure 3 is the right side view of Figure 2, Figure 4 is a schematic diagram of the scum outflow hole, and Figure 5 is the amount of movement of the movable weir and the outflow. It is a diagram showing an example of the relationship with water amount. 6 to 8 are explanatory drawings; FIG. 6 is a block diagram of the sewage treatment equipment, FIG. 7 is a schematic diagram of a sedimentation tank, and FIG. 8 is a schematic diagram showing the floating state of scum. 1... Raw water supply pipe, 2... Sedimentation tank, 8... Scum collector, 21... Straightening tube, 23... Scum outflow hole, 24... Movable weir, 25... Straightening tube scum skimmer.

Claims

[Scope of utility model registration request]

A rectifying tube is provided concentrically with respect to the sedimentation tank, raw water is supplied into the rectification tube and guided into the sedimentation tank, solids in the raw water are sedimented and separated in the sedimentation tank, and scum is floated and separated on the water surface. In an activated sludge sedimentation tank in which scum is collected in a scum collector and discharged by a scum skimmer, a scum outflow hole that opens into the scum collector is formed in the side surface of the rectifying cylinder, and the amount of scum outflow from the scum outflow hole is adjusted. 1. An activated sludge sedimentation tank characterized in that a movable weir is provided in the straightening tube, and a straightening tube scum skimmer is provided so as to be rotatable by a driving source of the settling basin scum skimmer.