1. Ｋｕｂｏｔａ Ｊｏｈｋａｓｏｕ Ｍｏｄｅｌ ＨＳ－Ｐ
Ｋｕｂｏｔａ　Ｊｏｈｋａｓｏｕ Ｍｏｄｅｌ　ＨＳ－Ｐ
Ｈｏｕｓｅｈｏｌｄ　Ｗａｓｔｅｗａｔｅｒ　Ｔｒｅａｔｍｅｎｔ　Ｓｙｓｔｅｍ
５・７・１０　Ｐｅｒｓｏｎ　Ｔａｎｋ

2. “Johkasou” in Japan 8,600,000 units of “Johkasou” placed in Japan
Approx.160,000 units of “Johkasou” were installed in Japan in 2008 for domestic use.
In 1969, we started development of “Johkasou” That can treat only night soil(flush toilet water)
In 1986, we launched new “Johkasou” that can treat both night soil and gray water.
Since then, a new high-performance product development continues.
Now we manufacture approx. 20,000 “Johkasou” in a year.

3. Price concerning “Johkasou” in Japan
“Johkasou” Catalog Price
6,000～12,000 dollars
Construction Cost
Including “Johkasou”
7,500～12,500 dollars
Maintenance and Operation cost a year
500～900 dollars

4. Perspective cross section
Air-lift pump
Blower
Influent
Effluent
Anaerobic filter tank
First chamber
Disinfection tank
Anaerobic filter tank
Second chamber
Sedimentation tank
Suspended solids are settled and supernatant flows to
overflow weir
Remove solids in the wastewater and anaerobic microbe attached to the filer decompose organic matter．Sludge is stored in these tanks
Contact aeration tank
Aerobic microbe grows on the surface of contact media
in the condition of aeration by blower

5. Flow sheet Blower Anaerobic filter tank Anaerobic filter tank
                          
                         
                           
Anaerobic filter tank
Anaerobic filter tank
Contact aeration tank
Sedimentation tank
Disinfection tank
BOD20mg/L
BOD200mg/L
200L/P・D
Kitchen
Laundry
Sink
Bath
Toilet
Regular water circulation
Sloughed sludge transfer

6. Term and conditions of design
Average daily wastewater
53gal／P／D
(200L/P/D)
Influent BOD
200mg／L
Effluent BOD
20mg／L ≥
BOD removal rate
90％ ≤

7. TRANSPARENCY(Tr) CHECK
Treated Water Tr>20cm ≒BOD<20mg/L

8. Specification outline
Tank capacity
5-person
7-person
10-person
Model
HS-5P
HS-7P
HS-10P
Capacities (gallons)
Anaerobic filter tank
First chamber
240
337
563
Second chamber
161
282
374
Contact aeration tank
267
376
538
Sedimentation tank 81
126
189
Disinfection tank 7
Total
755
1128
1671
Dimensions
(in.)
Length 96
104
128
Width 48 65 74
Height 70
Weight　 (lbs.)
529
794
1036
Blower
Rated flow (liter/min) 60 80
120
Power supply (w) 39 57
130

9. Characteristics
Environment Ministry’s government subsidy compliance type in Japan
Certified by the Ministry of Construction (Notification No.1292,No.1-2 in Japan)
Adopting Anaerobic Filter Contact Aeration Process (Anaerobic-aerobic treatment process, Denitrification process with nitrified mixed liquor recycle), Effluent quality is stable.
Adopting six valves and air-lift pump with adjustment device, Maintenance is easy.
FRP (Fiberglass Reinforced Plastic) Body

10. KUBOTA Corporation Johkasou Division
Shiga factory Takamatsu, Konan-shi, Shiga-ken, Japan Head Office Shikitsuhigashi, Naniwa-ku, Osaka, Japan URL