Water Supply & Drainage Division

Installed Examples of AQUACUBE

Case1: Lunch boxes/side dishes production factory (sewage effluent)

Wastewater volume 400m3/day
(unit:mg/L)
  Influent to
carrier tank
Effluent
BOD 840 300
SS 100 300
COD 290
n-Hex 110 30
[Hokkaido]
  • Installation in 2002
Reduction in the size of the facility and in the amount of excess sludge.

In the activated sludge process, a large facility area is required and a large quantity of Excess Sludge is produced.

By adopting AQUACUBE, miniaturization of the treatment facility and reduction of Excess Sludge is achieved.

Installation of equipment
Flowsheet
Case1: Flowsheet

Case2: Food factory (river effluent)

Wastewater volume 150m3/day
(unit:mg/L)
  Influent to
carrier tank
Effluent
BOD 1300 20
SS 350 30
COD 400 20
n-Hex 180 15
[Kagawa Pref.]
  • Installation in 2007
It can function to immobilize oil and fat degrading bacteria.

In the activated sludge process, there were some concerns about maintaining stable sludge conditions to due to the high amount of oil and fat contained in the drainage.

The combination of SKBiO and ACUACUBE enabled immobilization of oil-degrading microorganisms and consequently realized stable treatment of oil and fat.

Installation of equipment
Flowsheet
Case2: Flowsheet

Case3: Chemical factory(river effluent)

Wastewater volume 300m3/day
(unit:mg/L)
  Influent to
carrier tank
Effluent
BOD 300 30
SS 600 30
[Ibaraki Pref.]
  • Installation in 2008
Realized stable treatment by improvement of the existing clogged contactor in aeration tank.

As the load for the existing contactor aeration tank was high, and sludge clogged in contactor material, making the treatment unstable.

By adopting AQUACUBE, here were no more clogs of the contactor material, making stable treatment possible.

Installation of equipment
Flowsheet
Case3: Flowsheet

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