the amount of chlorine required to rid a particular pool of existing bacteria, algae and swimmers wastes.
Chlorine demand is the amount of chlorine needed to reduce the microorganism level in treated effluent to a level safe for discharge to a receiving body of water. More specifically, it is the amount of chlorine needed to provide a certain residual chlorine content (usually 0.5 mg/L) after a specific time (usually 15 minutes). The chlorine-demand test is an old method that depends heavily on test conditions, such as temperature, exposure time, etc. However, it is commonly regulated by sewer codes.
a measurement of the amount of Free Chlorine that must be added to water, showing a zero Free Chlorine level, in order to produce at least a minimally positive Free Chlorine level. The test can be performed by some dealers.
The amount of chlorine needed to establish a stable, residual for effective sanitation.
The minimum amount of chlorine needed to react in a water purification system; used as a monitoring measurement by system operators.
The amount of chlorine or bromine that must be added before a chlorine or bromine residual can be maintained.
The amount of chlorine required to destroy bacteria or algae.
The materials in the water which use up chlorine, such as bacteria, algae, dirt, leaves, grass clippings and swimmers wastes. The chlorine demand must be satisfied before a chlorine residual is available to disinfect the pool water.
The chlorine required to destroy bacteria, algae and other swimming pool water contaminants. Once chlorine demand is satisfied, the water is properly disinfected until contamination arises.
amount of chlorine actually needed to disinfect a given water supply.
The amount of chlorine to meet requirements of sanitation, bacterial and algae growth. Algae and bacterial growth, as well as foreign contaminants all consume chlorine. If the free chlorine residual can be maintained, the demand is being met. If not, a higher demand for chlorine exists and it is necessary to meet that demand before an acceptable level of sanitation exists.
The amount of chlorine needed to kill bacteria, algae and other organisms in pool water. Once the chlorine demand is fulfilled, the water will be in an appropriate condition until additional contamination occurs.
The amount of chlorine required to destroy all organic material, bacteria, algae, chloramines and other swimming pool contaminants in the water. Once chlorine demand is satisfied, water will be in a sanitary condition.
The amount of chlorine required to destroy bacteria, algae, chloramines, and other swimming pool contaminants. Foreign contaminants in water (such as dirt, leaves, grass clippings, swimmer's wastes, etc.) use up chlorine. The chlorine demand must be satisfied before a "chlorine residual" is available to disinfect the pool water.
The chlorine required to eliminate contaminants in your pool. Chlorine may need to be added in large quantities before chlorine demand is satisfied.
Chlorine necessary to oxidize all organic mater in water.
The relation of the amount of chlorine to be added to a system to react with chlorine-oxidizable material until a free residual in a given system is achieved.
The difference between the amount of chlorine added to water, sewage, or industrial wastes and the amount of residual chlorine remaining at the end of a specific contact period.
The quantity of free available chlorine removed during the process of sanitizing. The amount of organic and non organic material contained in the water will "demand" a certain level of oxidizer to be destroyed.
the amount of chlorine required to be added to the water before a free chlorine residual can be maintained. Almost anything entering the water (including rainfall or fresh-water fill ups) can contribute to chlorine demand.
The amount of chlorine required to kill bacteria and algae, and to break down other contaminants in your water.
The amount of free chlorine required to add to your pool to kill algae and bacteria.
A measure of the amount of chlorine which will be consumed by organic matter and other oxidizable substances in a water before a chlorine residual will be found.
The amount of chlorine required to destroy bacteria, algae and other contaminants in swimming pool water. Once the chlorine demand is satisfied, the water will be in a sanitary condition until further contamination takes place.