Johkasou tanks are wastewater treatment tanks that can be set up in areas without sewage infrastructure.

Product description Brand name and product description

Johkasou tanks are commercialized wastewater treatment tanks that can be set up in areas without sewage infrastructure, combining both anaerobic and aerobic microorganisms. Steps include a solid-liquid separation tank, an anaerobic filter bed tank, a moving bed tank or membrane bioreactor, a carrier filter tank or sedimentation tank, followed by the disinfection tank. The product is designed and manufactured by Kubota in Japan, and distributed primarily in Asia.

Six different models exist: KZ II, HCZ, KM-SG-NP, K-HC-T, K-HC-R, KTZ


Target region(s) Target region for distribution/implementation (listed by country if specified)



Distributors/implementing organizations Organization(s) distributing/deploying this product directly to communities/individuals?"


Market suggested retail price Price per unit or service price per usage/terms (USD). Subsidies noted.


Competitive landscape Similar products available on the market. May not be a comprehensive listing.

Competitive products include DEWATS, the Biofil Digester, AnoxKaldnes MBBR, and septic tanks

SDG targeted United Nations Sustainable Development Goals (SDGs) targeted with this product/application/service

Goal 6: Clean water and sanitation

Target user(s) Target user/consumer base (country, income segment)

Sample projects exist for users in hospitals, a restaurant, factory domestic wastewater, government offices, and detached houses

The @AutodeskFdn blogged about our how-to guide for communities writing proposals for development projects