Home | Engineering | Water Treatment: Water Purification

Environmental Engineering - Water Treatment

Water Treatment: Water Purification

   Posted On :  03.07.2016 06:21 pm

Water purification is the process of removing undesirable chemicals, materials, and biological contaminants from contaminated water.


 

WATER TREATMENT: WATER PURIFICATION

 

Water purification is the process of removing undesirable chemicals, materials, and biological contaminants from contaminated water. The goal is to produce water fit for a specific purpose. Most water is purified for human consumption (drinking water) but water purification may also be designed for a variety of other purposes, including meeting the requirements of medical, pharmacology, chemical and industrial applications. In general the methods used include physical processes such as filtration and sedimentation, biological processes such as slow sand filters or activated sludge, chemical processes such as flocculation and chlorination and the use of electromagnetic radiation such as ultraviolet light.

 

The purification process of water may reduce the concentration of particulate matter including suspended particles, parasites, bacteria, algae, viruses, fungi; and a range of dissolved and particulate material derived from the surfaces that water may have made contact with after falling as rain.

 

The standards for drinking water quality are typically set by governments or by international standards. These standards will typically set minimum and maximum concentrations of contaminants for the use that is to be made of the water.

 

It is not possible to tell whether water is of an appropriate quality by visual examination. Simple procedures such as boiling or the use of a household activated carbon filter are not sufficient for treating all the possible contaminants that may be present in water from an unknown source. Even natural spring water � considered safe for all practical purposes in the 19th century � must now be tested before determining what kind of treatment, if any, is needed. Chemical analysis, while expensive, is the only way to obtain the information necessary for deciding on the appropriate method of purification.

 

According to a 2007 World Health Organization report, 1.1 billion people lack access to an improved drinking water supply, 88% of the 4 billion annual cases of diarrheal disease are attributed to unsafe water and inadequate sanitation and hygiene, and 1.8 million people die from diarrheal diseases each year. The WHO estimates that 94% of these diarrheal cases are preventable through modifications to the environment, including access to safe water.[1] Simple techniques for treating water at home, such as chlorination, filters, and solar disinfection, and storing it in safe containers could save a huge number of lives each year.[2] Reducing deaths from waterborne diseases is a major public health goal in developing countries.

 

 

ADVANCED WASTE WATER TREATMENT - REMOVAL OF SUSPENDED SOLIDS

 

1. Microstraining

 

2. Coagulation and flocculation

 

3. Filtration

 

4. Removal of dissolved solids

 

5. Ion exchange

 

6. Reverse osmosis

 

7. Electrodialysis

 

8. Removal of nitrogen

 

9. Phosphate removal (chemical treatment)

 

10.            Phosphate removal (biological treatment)

 

11.            Removal of dissolved organic compounds

 

12.            Adsorption

 

13.            Sludge treatment and disposal

 

14.            Disinfection.

 

Tags : Environmental Engineering - Water Treatment
Last 30 days 23 views
Related words :

What is Water Treatment: Water Purification Define Water Treatment: Water Purification Definition of Water Treatment: Water Purification where how meaning of Water Treatment: Water Purification lecturing notes for Water Treatment: Water Purification lecture notes question and answer for Water Treatment: Water Purification answer Water Treatment: Water Purification study material Water Treatment: Water Purification assignment Water Treatment: Water Purification reference description of Water Treatment: Water Purification explanation of Water Treatment: Water Purification brief detail of Water Treatment: Water Purification easy explanation solution Water Treatment: Water Purification wiki Water Treatment: Water Purification wikipedia how why is who were when is when did where did Water Treatment: Water Purification list of Water Treatment: Water Purification school assignment college assignment Water Treatment: Water Purification college notes school notes kids with diagram or figure or image difference between Water Treatment: Water Purification www.readorrefer.in - Read Or Refer

​TOP MENU

OTHER SUGEST TOPIC