Download Basic Environmental Engineering by R.C. Gaur PDF

By R.C. Gaur

The e-book covers the recent syllabus of the semester scheme for the 1st 12 months in R.T.U. and different universities. It encompasses the sensible purposes of the topic, that's the actual desire of the hour and likewise discusses the main environmental difficulties we are facing this day. It comprises actual info supplied by way of different Manuals ready by means of The C.P.H.E.E.O. It contains examples of alternative tasks and schemes for representation. uncomplicated sketches and more straightforward derivations of the mathematical formulations were followed. evaluation questions on the finish of every bankruptcy are given to check the certainty of the reader. the sensible difficulties of box and primary ideas were correlated via the substantial event and deep feel of shock to the mum earth.

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The surge block (bailer) is connected to a hollow pipe through which the water charged with fine particles is pumped out. This operation is repeated till clear water comes out from the well. Water Pollution 27 (iii) Compressed Air Method In this method, the development of the tube-well is done with an air compressor discharge pipe and an air pipe. The air pipe is placed in the discharge pipe such that its lower end projects out of it by a small length. This assembly is lowered into the well till it reaches the bottom of the strainer pipe.

The usual mechanism by which air is cooled to cause precipitation is lifting of the air mass. There are three different methods by which the air mass gets lifted and gets cooled to cause precipitation, generally in the form of rain and sometimes as snow, hail, sleet etc. These are cyclonic precipitation, connective precipitation and orographic precipitation. Cyclonic precipitation is by the lifting of an air mass due to pressure difference and consequent horizontal flow from the surrounding area.

For municipal water supplies the pH should be as close to 7 as possible. The lower pH water (acidic) may harm the pipe lines etc. by reacting with them (tuberculation and corrosion). The alkaline water may produce sedimentation, (scaling) in pipes, difficulties in chlorination ( for disinfection) and adverse effect on human physiological system. (iii) Hardness of water: Hardness in water prevents the formation of sufficient foam when used with soap. It is caused by certain dissolved salts of calcium and magnesium which form scum with soap and reduce the formation of foam which helps in removing the dirt from clothes.

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