ENV ENGINEERING_APPSC CE Quiz-3

The efficiency of sedimentation tank is

A grit chamber of dimension 15 m x 2 m x 0.8 m liquid depth flow of 800 m³/hr. Its detention time is

What is the size of the coarse screen used in pretreatment of water?

The ozonation in drinking water helps to remove

A town having a water demand of 20 MLD is to be supplied with water having a residual chlorine concentration of 0.3 ppm, If the chlorine demand in raw water is 0.6 ppm and the available chlorine in bleaching powder is 20 %, the amount of bleaching powder per day is

The maximum daily demand of a city is 12 x 10⁵ and the rate of filtration is 50 per litre per hour per m². What is the area of the filter?

Which of the following removes hardness completely

Which of the following sequences is the most suitable for treating raw surface water to make it suitable for drinking purposes?