Automatic total reducers monitoring and adjustment system

Details Automatic total reducers monitoring and adjustment system Automatic total reducers monitoring and adjustment system

1988-03-24

1991-04-02

Warden, Robert J.

Chemistry: analytical and immunological testing

Automated chemical analysis

Condition or time responsive

436 52, 436119, 436120, 436123, 436163, 436165, 422 63, C01N 2100, C01N 3100

Patent

active

050046969

ABSTRACT:
A process and apparatus for automatically monitoring or adjusting, or both, the concentration of total reducers (i.e. reduced sulfur-containing constituents which consume iodine) in an aqueous medium (e.g. waste water stream) whereby the time period for iodine titration of an untreated sample of the aqueous medium is automatically measured and this time measurement is automatically translated into an output signal to either a monitoring means or a process adjustment means (e.g. oxidant chemical feed pump) or both.

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APHA Standard Methods-13th Method, 1971, pp. 336-338.
"Chemical Analysis for Thiosulfate and Sulfite in Industrial Wastewater-Sep. 1975," Modified Los Angeles County Sanitation District Procedure.
Olin Water Services Total Reducer Titration Analytical Method (printed Nov. 1985).
Hach Hardness Monitor Model 120 product brochure (no date).
Technicon Monitor 650 product brochure (dated Jan. 1984).
Dionex Series No. 8000 Analyzer product brochure (copyright 1984).

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