Tuesday, December 28, 2010

Water Pollution

Measurements of water quality of the various types of water, and now I will discuss water quality analysis of only one type of water, the river water quality analysis, in which many parameters that must be contained inside the known results and the data must be accurate to take water samples from river required the preparation of preparation before going broad, including measuring equipment and chemical substances such as

1. pH meter to measure the acid content and water alkalis

2. Thermometer for measuring water temperature

3. Conductivity meter for measuring electric power flow

4. DO meter or dissolved Oxygen meter to measure the oxygen content in water, and also to measure the BOD or biological oxygen demand known as biological oxygen demand

5. Kits for analysis of bacteria such as faecal coli, and the total coli etc.

Degree of Acidity (pH)

                    The degree of acidity (pH) of water, necessary to determine the usability of waters for both domestic use, irrigation, aquatic life and organize other interests. The degree of acidity (pH) is recommended by the National Air Quality standards of good raw water for drinking and household water ranges from 5-9.
Menon said that the waters with a pH equal to or less than 4.0 and equal to or greater than 10.0 can not be used as a source of drinking water.
    

Electrical Conductivity

                
            Electrical conductivity is ability of water brought an electric current, where the conductivity is proportional tothe concentration of solute ions to
in water. Units of electrical conductivity as micro mhos / cm. The nature of electrical conductivity depends alsoon temperature, ie the higher the temperature rise

Wednesday, July 1, 2009

BIOLOGICAL OXYGEN DEMAND


Oxygen Biology needs is the number of oxygen needed by bacteria to decompose organic substances. BOD analysis is needed to determine the burden of pollution by the filth and industry.analysis requires the bacteria in the sample water in the water where the river is generally already have. but for the water industry should be added filth seed bacteria.