Drinking water treatment process pdf

The water is now safe to drink and is sent to pumping stations for distribution to homes and businesses. Examine in detail the process of drinking water treatment and its relationship to human health with the resources below. Once your review of this material is complete, proceed to the Activity.

Harmful chemicals from human activities (industrial wastes , pesticides, fertilizers). Several disinfection methods are used in water treatment. Disinfection with chlorine is the most widely used method for large water supplies but its application is less common in small supplies.

Ultraviolet irradiation is the most common disinfection method found in private supplies. PURPOSE OF THE HANDBOOK. The treatment and supply of drinking water is a challenging task that includes many diverse aspects ranging from water quality management in catchments, operation and control of water treatment plants , distribution of treated water , community participation, project management, etc. Civil Engineers design, monitor and maintain water treatment plants and water supplies.

Civil engineers are vital in the treatment and delivery of water to your household. Hepatitis A, Giardia intestinalis, and other pathogens. What are the steps of water treatment? Operated properly, distillation can remove up to 99.

How does filtration work? Operation costs for distillation can be among the highest for h ome drinking water treatment systems. In the drinking water treatment processes, the optimization of the treatment is an issue of partic- ular concern. Secondly, drinking water treatment plants are designed with a multi- barrier approach, meaning that there are multiple stages of treatment throughout the entire process that each act as a barrier against contaminants.

With reduction of nitrate to nitrogen gas, the lack of a problematic brine waste stream is a clear advantage of biological treatment over the removal processes. Because water is a good solvent, it picks up all sorts of natural pollutants. Treatment makes the water safe for people to drink.

In nature, water is not always clean enough for people to drink. The most common treatment process train for surface water supplies—conventional treatment—consists of disinfection, coagulation, flocculation, sedimentation, filtration, and disinfection. The safe drinking water requires a holistic approach that considers the source of water, treatment processes, and the distribution system.

The end use may be drinking , industrial water supply, irrigation, river flow maintenance, water recreation or many other uses, including being safely returned to the environment. Sodium aluminate, NaAlO has a variety of industrial uses and has been utilized as a coagulant in drinking water treatment as a supplement to alum and may be encountered in lime-soda softening processes. It has been used in wastewater treatment as a coagulant in the phosphorous removal process.

Objectives of water treatment. Removal of solids in water. Solids maybe suspende dissolved or colloidal. Some of the dissolved solids should stay in water at healthy concentrations.

WATER TREATMENT MANUALS FILTRATION Published by the Environmental Protection Agency, Ireland. The Agency personnel involved in the production and preparation of this manual were Mr. Marion Lambert (word processing). Download unit processes in drinking water treatment or read online books in PDF , EPUB, Tuebl, and Mobi Format. Click Download or Read Online button to get unit processes in drinking water treatment book now.

This site is like a library, Use search box in the widget to get ebook that you want. Worldwide, a combination of coagulation, sedimentation and filtration is the most widely applied water treatment technology, and has been used since the early 20th century. Chlorination is the process of adding chlorine to drinking water to disinfect it and kill germs. The regulations also protect against contaminants that can form during drinking water treatment.

Different processes can be used to achieve safe levels of chlorine in drinking water. Chlorine is available as compressed elemental gas, sodium hypochlorite solution (NaOCl) or solid calcium hypochlorite (Ca(OCl) 2.