A B C D E F G H I J K L M N O P Q R S T U V W X Y Z


catalyst
a substance that alters the velocity of a chemical reaction and may be recovered essentially unaltered in form and amount at the end of the reaction.
 
caustic
capable of destroying or eating away by chemical action; a hydroxide of a light metal.
 
chemical coagulation
the destabilization and initial aggregation of colloidal and finely divided suspended matter by the addition of a floc-forming chemical.
 
chemical oxygen demand
the amount of oxygen required for the chemical oxidation of organics in a liquid; a chemical test that determines the oxygen equivalent of the amount of organic matter oxidizable by potassium dichromate in a 50% sulfuric acid solution.
 
chlorine demand
the quantity of chlorine absorbed by wastewater (or water) in a given length of time.
 
circuit
a path through which an electrical current can flow when the path is complete.
 
clarifier
a unit which provides for settling and removal of solids from wastewater.
 
coagulation
the clumping of particles in order to settle out impurities; often induced by chemicals such as lime or alum.
 
coliform organisms
any of a number of organisms whose presence in wastewater is an indicator of pollution and of potentially dangerous bacterial contamination.
 
compound
two of more elements combined; a substance having different properties than of the elements used.
 
condensate
water obtained by evaporation or a product that has changed from a gaseous or vaporous form to a liquid form.
 
conductance
a measure of the conducting power of a solution equal to the reciprocal of the resistance. The resistance is expressed in ohms.
 
conductivity
ability of a material to carry current or heat.
 
current
a movement of electrons through a conductor. Measured in amperes.
 

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