Micro Sewage Treatment Station for House Hold Waste Water

Does anyone have any available technology for treating wastewater generated from approx 10 households? We are actively looking for these micro sewage treatment stations to be provided to remote areas. To areas that are disconnected from any municipal network, especially in Africa and Asia. The Solution should be economical from both a Capex and Opex standpoints and easy to install in existing buildings/homes. Looking forward to see what solution are available in the market. Share technology details as well, to check the feasibility of the technology.