Results 241 to 250 of about 90,434 (287)

Monitoring Chlorine Residuals

Journal AWWA, 1984
In this letter, White comments that the conclusions reported by Ram and Malley in “Chlorine Residual Monitoring in the Presence of Norganic Compounds” (Journal AWWA, September 1984) may be misleading to operators at wastewater or reclaimed water plants.
George Clifford White, Neil M. Ram
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QUALITY VS. RESIDUAL CHLORINE

Journal AWWA, 1971
Chlorine residual, an indication of adequate chlorination of a water supply, has a definite relationship with the bacteriological quality of the supply. This paper discusses how much, what kind of, and the proper surveillance of, chlorine residual.
Ralph W. Buelow, Graham Walton
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Determination of residual chlorine in water with computer automation and residual-chlorine electrode

Analytical Chemistry, 1978
A method of determining active chlorine in water in the concentration range 3 to 100 ppB with an accuracy of 2 ppB has been developed. The method uses the Orion model 97-70 residual-chlorine electrode and the known standard-addition potentiometric technique to measure the potential difference between iodide and iodine that is generated by active ...
Lester P. Rigdon, Gwilym J. Moody, Jack W. Frazer   +2 more
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Chlorine Residual and Bacteriological Quality

Journal AWWA, 1942
problem of the relation of chlorine residual to bacteriological quality of drinking waters resolves itself, in a sense, into whether a stipulated residual may be employed as an index of safety in respect to bacterial quality and hazard of transmission of disease.
Max Levine, Austin Heller, Richard Bender   +2 more
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Advances in Chlorine‐Residual Analysis

Journal AWWA, 1975
Chlorine has historically been chosen for the disinfection of water supplies. Its germicidal efficiency and the long‐lasting effectiveness of chloramine residuals in the distribution system are responsible for its continued popularity. Unfortunately, techniques for continuous process analysis capable of differentiating between chlorine‐residual species
James J. Morrow, Robert N. Rood
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AUTOMATED CHLORINE RESIDUAL CONTROL

Journal AWWA, 1969
Automated chlorination can be accomplished by a variety of control systems, each of which leaves some margin for error and unbalance. A new system refines accuracy and stability by employing techniques that lead to system performance characteristic of the linear control loop.
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Chlorinated Hydrocarbon Residues in Airborne Fallout

Nature, 1972
IN an analysis of the input and output of chlorinated hydrocarbon residues in a freshwater ecosystem in south Sweden, the amount entering the study area by means of precipitation and by airborne particles was estimated.
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