Water Purification Steps Pdf

Supersaturation of air in water 2 4 atm pressure b bbl i 20bubble size.

Water purification steps pdf. Each year we perform more than 100 000 water quality tests in municipal provincial federal private and university laboratories using the most up to date technologies and equipment. If a water treatment facility uses ground water as its only water source disinfection may be the only step required to sufficiently treat the water. Since the publication of this manual there have been significant developments both in terms of the technology and understanding of the disinfection of drinking water and in the supervisory role of the epa in the drinking water area. Shuokr qarani aziz et al.

The common steps of river water treatment are provided in figure 3 and the processes are illustrated in the following diagram. Water treatment 6 1 introduction water can be contaminated by the following agents. Pathogens disease causing organisms that include bacteria amoebas and viruses as well as the eggs and larvae of parasitic worms. Expose water to air pressure saturation of air in water and proportional to applied pressure and proportional to applied pressure.

The city of ottawa s water purification processes are continuously monitored ensuring that high quality water is pumped out of the plants and maintained as it travels through the distribution system. Aerated water is then placed in settling tank and stored for 10 14 days. Raw water is first collected in large aeration tank and the water is aerated by bubbling compressed air through perforated pipes. Diarrhea cholera guinea worm disease typhoid and dysentery are just a few of the most common waterborne diseases and are especially rampant in remote areas where water purification systems aren t as customary.

General steps in purification of drinking water includes 1. C onsuming contaminated water can have very dire consequences to our health. The epa first published a water treatment manual on disinfection in 1998. 20 100 μm 1.

Water goes into a closed tank or reservoir. It also removes metal such as iron manganese by precipitating then as their respective hydroxides. Chlorine or other disinfecting chemicals kill any remaining microorganisms or bacteria in the water and help keep the water clean until distribution. Amount of dissolved air will increase.

More than 3 4 million people die every year due to pathogens and bacteria found in impure water world. Aeration removes bad odors and co2.