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Definition of NPSHr (required) 5 Oct 2012 | 07:40 am
It is the energy in the liquid required to overcome the friction losses from the suction nozzle to the eye of the impeller without causing vaporization. It is a characteristic of the pump and is indic...
Basic Pump Principles (Part 2) 3 Oct 2012 | 10:03 am
Pressure measurement Force (F) is equal to Pressure (P) multiplied by the Area (A): F = P x A. Pressure is equal to the Force divided by the Area: P = F/A If we apply pressure to the surface of a...
Basic Pump Principles 30 Sep 2012 | 09:51 pm
Pumps are used to transfer liquids from low-pressure zones to highpressure zones: Without a pump in this system, the liquid would move in the opposite direction because of the pressure differential. ...
Approach to Heat-Exchanger Design 29 Sep 2012 | 09:27 pm
The proper use of basic heat-transfer knowledge in the design of practical heat-transfer equipment is an art. Designers must be constantly aware of the differences between the idealized conditions for...
Water Treatment in General 27 Sep 2012 | 07:04 am
Water must have eye appeal and taste appeal before we will drink it with much relish. Instinctively we draw back from the idea of drinking dirty, smelly water. Actually far more important to our well-...
Energy Intensive Treatment Technologies 25 Sep 2012 | 06:50 am
OZONE Ozone is used extensively in Europe to purify water. Ozone, a molecule composed of 3 atoms of oxygen rather than two, is formed by exposing air or oxygen to a high voltage electric arc. Ozone i...
Introducing Chemical Treatment 20 Sep 2012 | 06:43 am
CHLORINE Chlorine is familiar to most people as it is used to treat virtually all municipal water systems in the United States. Chlorine has a number of problems when used for field treatment of wate...
Introducing The Physical Treatment Methods 15 Sep 2012 | 06:02 am
The following technologies are among the most commonly used physical methods of purifying water: Heat Treatment - Boiling is one way to purify water of all pathogens. Most experts feel that if the wa...
The Clean Water Act 11 Sep 2012 | 05:52 am
Drinking water standards are not the only regulations we need to comply with in the U.S. Today's Clean Water Act has its origins from the late 1940s. The original 1948 statute (Chapter 758; PL 845), t...
The Drinking Water Standards (Part 2) 8 Sep 2012 | 05:39 am
In spite of the multitudinous regulations and standards that an existing public water system must comply with, the principles of conventional water treatment process have not changed significantly ove...
