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Feb 26, 2016 / Haseeb Jamal -

5 Travel Myths You Need to Stop Believing Right Now

Feb 26, 2016 / Haseeb Jamal -

Canal Comes Alive with Lighted Boat Parade.

Sources of Fresh Water in Environmentl Engg.

The quantity of water available at the source must be sufficient to meet various demands and requirements of the design population during the entire design period. Plans should be made to bring water from other sources if the available water is insufficient.

Chemical Characteristics of Water

Hardness is the property that makes water to require more soap to produce a foam or lather. Hardness of water is not harmful for human health but can be precipitated by heating so can produce damaging effects in boilers, hot pipes etc by depositing the material and reducing the water storage and carriage capacity. Absolute soft water on the other hand is not acceptable

Municipal Wastewater Treatment Systems

Collection of domestic wastewater is best achieved by a full sewerage water drain age system. Unfortunately this method is most expensive and there is relatively few communities in hot climate which afford it. A modern hygienic method of night soil collection is the only realistic alternative. Treatment is required principally to destroy pathogenic agents in sewage or night

Preliminary Treatment of Water

The first unit operation generally encountered in wastewater treatment plants is screening. A screen is a device with openings, generally of uniform size, that is used to retain solids found in the influent wastewater to the treatment pant. The principal role of screening is to remove coarse materials (pieces of wood, plastics, rags, papers, leaves, roots etc.) from the

Types of Primary Sedimentation Tanks

Some removal is essential in primary sedimentation tanks because of the grease and other floating matter which is present in wastewater. The sludge serapes can return along the length of the tank a the water surface. As they move towards the outlet end of the bank, the flights then move the sum towards a skimmer located just upstream of the effluent weirs.

Activated Sludge Wastewater Treatment Process

Is defined as a ‘Suspension’ of microorganisms, both living and dead’ in a wastewater. The microorganisms are active by an input of air (oxygen) thus known as activated-sludge. Activate-sludge is that sludge which settle down in a secondary sedimentation tank after the sewage has been freely aerated and agitated for a certain time in an Aeration tank. It contains

Activated Sludge Process Design

The activated sludge form the underflow of the final setting tanks should be returned to the inlet of the aeration tanks at a rote sufficient to maintain the MLSS concentration at the design value. Excess activated sludge withdrawal system and subsequent treatment and disposal of waste sludge. Since the whole process takes place in a liquid medium the hydraulic

Bacterial Classification in Wastewater Treatment

Microorganisms are significant in water and wastewater because of their roles in different transmission and they are the primary agents of biological treatment. They are the most divers group of living organisms on earth and occupy important place in the ecosystem. Are called OMNIPRESENT. Classification of bacteria based on Oxygen requirements (ORP)

Turbidity of Water sample Using Nephelometric Method

Water is said to turbid when it is seen containing materials of suspension inside it. While turbidity may be defined as the measure of visible material in suspension in water, turbidity may be caused by algae or other organisms. It is generally caused by silt or clay. The amount and character of turbidity depends upon two things: Type of soil over which flows, The velocity of

Experiment To Find PH Value of Given Water Sample

"PH" value is the measure of concentration of hydrogen in water it shows the alkanity or acidity of water. Mathematically PH may be defined as: The negative log of hydrogen ion concentration. This reaction shows that the number of H4 and OH ions are equal experimentally it has been proved that the product of concentration of H4 and OH is a constant quality K,

Finding Total Hardness Of Water Using EDTA Method

Hard water is generally considered to be one which requires considerable amount of soap to produce foam or leather. Hard water cause scale formation in boilers heaters and hot water pipes. The rain water catches CO2 from the atmosphere when the water pass through CaCO3 rock in the Soil, these compounds make the water hard. Calcium and magnesium chlorides

Determination of Suspended Solids in Water

The total dissolved solids mainly consist of the test that acts as a check on detailed analysis. Another useful aspect is that electric conductivity can be continuously recorded. Any sudden change indicate a change of water. A treatment method can be there fore instantly detected. Determination of total solids is used in two operations. In developing a potential source

Finding Alkalinity of Water Sample by Indicator Method

Alkalinity is an important determination to the water treatment plant operator because some of the coagulants used to clarify water and prepare it for filtration required sufficient alkalinity to insure a proper reaction. The alkalinity may be increased by adding lime or NA2CO3. Excessive alkalinity may be however interfere with coagulants.

Find Coliform Bacteria By Multiple Tube Fermentation Technique

Many bacteria are found in water. most of them are totally harmless (non pathogenic) and few are harmful (pathogenic), which causes diseases e.g. typhoid, fever, parathyphoid, dysentery, and cholera etc. The ground water at great depths is free from these bacteria. The sanitary engineer is not concerning all of them. The Coliform group is one of

Measure COD of WasteWater Using Closed Reflux Method

Place Approximately 500ml Of Sample In a clean blender bowl and homogenizze at high speed for two minutes. blending the sample ensures a auniforum distribution of suspended solids and thus improves the accuracy of test results. Holding the vial by the cap

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