Assessment of usage conditions of septic tanks in Ha Noi and Hai Phong

The study had been conducted in 2017 - 2018 to generate usage conditions of septic tanks in Ha Noi and Hai Phong through: (1) collecting information on usage condition of septic tanks by interview survey; and (2) obtaining analytical results of wastewater inflowing to and out flowing from the septic tanks selected by interview survey results.