Johkasou

Target SDGs

Target Users (Target Impact Group)

Household, Small and Medium-sized Enterprises, Public Sector Agencies

Distributors / Implementing Organizations

Unknown

Competitive Landscape

Direct competitors include AnoxKaldnes Moving Bed Biofilm Reactor, Decentralized Wastewater Treatment Systems (DEWATS), and The Biofil Digester.

Manufacturing/Building Method

Manufactured in Japan for small, medium, and large application settings.

Intellectural Property Type

Patent

User Provision Model

Users can contact local sales information centers

Distributions to Date Status

1,000,000 units have been distributed in Japan, and an additional 1,000 distributed overseas

Design Specifications

Johkasou design specifications vary according to model. Six products exist: KZ II, HCZ, KM-SG-NP, K-HC-T, K-HC-R, KTZ    

Product Schematics

Technical Support

Provided by Kubota

Replacement Components

Submerged membrane unit

Lifecycle

Unknown

Manufacturer Specified Performance Parameters

Manufacturer states product has 90% or higher BOD removal rate and delivers treated water quality with BOD of 20 mg/L or less (in case influent BOD is 200 mg/L).

Vetted Performance Status

Unknown

Safety

Blower must remain on for microorganisms (stopping will result in untreated wastewater and bad odor). Do not throw foreign objects (such as rubber, absorbent cotton, food wastewater, or cooking oil) in toilet to avoid clogging. Do not add chemicals (hydrochloric acid, insecticide, deodorant, chlorine agent, etc.) into the tank. Always close the manhole cover (and lock it if it has a locking mechanism). Prevent children from playing near the wastewater treatment plant. When closing a cover with bolt nuts, tighten cap nuts evenly using a special opening/closing handle. Be careful not to lose parts such as washers and gasket. Remove small stones and other foreign objects from the frame. Do not put any objects on the manhole, blower or power cable, or in the nearby area. Be sure to keep combustible or hazardous things away.

Complementary Technical Systems

Power source for blower

Academic Research and References

Compliance with regulations

Unknown

Evaluation methods

Unknown

Other Information

Specifications of each product:  KZ II, HCZ, KM-SG-NP, K-HC-T and K-HC-R.