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Updated: July 2009
Name of technology KUBOTA JOHKASOU
Visual Descriptions
Features Household Wastewater Treatment Tanks are spreading remarkably because of the good investment efficiency, easy setting and also highly efficient to reduce BOD, SS, nitrogen and phosphorus from household wastewater.
Large-scale wastewater treatment tanks are highly efficient to reduce BOD, SS, nitrogen and phosphorus from various series buildings sewage.
Sense Index Field of Application Classification of Technology's Principle
Human Waste Treatment (Johkaso) Aerobic Biochemical Treatment
Anaerobic Biochemical Treatment
Classification of Technological System Combined Wastewater Treratment
Classification of Unit Technology Johkasou
Reference Company Name KUBOTA Corporation
Department
Address
URL http://www.kubota.co.jp/english/index.html
Tel +81-3-3245-3708
Fax +81-3-3245-3720
E-mail webmaster@kubota.co.jp

1. Household Wastewater Treatment Tank

(1) Characteristics
HS-P series are the anaerobic-aerobic biofilter circulation system. This system is highly efficient to prevent SS flowing out and to reduce BOD. This body is made up of top and bottom parts and is made by the press molding system. That has achieved a strong structure and a high stable quality.
KJ series are compact type.
KM-series adopt microscopic porous submerged membrane units for aeration tanks. This has achieved high treatment. There is almost no SS flowing and the water after treatment can be reused as recycle.

(2) Performance

Series/Type HS-5 - 10P KJ-5 - 10 KM-5 - 10
Number of people 5, 7, 10 5, 7, 10 5, 7, 10
Capacity (M3) 2.859 - 6.323 2.315 - 4.639 2.630 - 4.050
Flow (L/person/d) 200
Inf. BOD (mg/L) 200
Eff. BOD (mg/L) <20 <5
BOD removal (%) >90 >97.5
Inf. T-N (mg/L) 50
Eff. T-N (mg/L) - <20 <10
T-N removal (%) - >60 >80

2. Large-scale wastewater treatment tank

(1) Characteristics
The body has circle section shape made by automatic rotary FRP molding system. It makes reliable body with stable strength.
HC-B,A-series adopts the fluidized bed system for aeration tanks. And medium is also used for filtration tank with intermittent backwashing system. The size is 70% smaller than the conventional types. There are 12 types from 15 to 50 people scale.
K-HC-series have 51 to 5000 people scale reduce BOD in less than 20 mg/L.
KM-SG-NP-series is designed for high quality water treatment and small installation space.

(2) Performance

Series/Type HC-B,A K-HC KM-SG-NP
Number of people 15 - 50 51 - 5000 51 - 5000
Flow (m3/Day) 3 - 10 5.1 - 395 5.1 - 470
Inf. BOD (mg/L) 200 200 (50 - 450)
Eff. BOD (mg/L) <20 <5
BOD removal (%) >90 >97.5
Inf. T-N (mg/L) 50
Eff. T-N (mg/L) - - <10
T-N removal (%) - - >80
Inf. T-P (mg/L) 5
Eff. T-P (mg/L) - - <1
T-P removal (%) - - >80

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