Abstract: A method and apparatus for removing specific contaminants from an aqueous solution in a recirculating tank or linear treatment system is described. An aqueous solution is pumped into a reaction chamber. Measurements from the aqueous solution are collected, including one or more of Free Chlorine, Total Chlorine, Total Ammonia Nitrogen, pH, bacteria in the tank, and Oxidation Reduction Potential. In response to the measurements collected, one or more of pump speed, injection of pH precursors prior to the reaction chamber, reaction chamber electrode voltage, current, infusion rate of the chlorine, and contact time of the aqueous solution with the chlorine, are adjusted.

Abstract: A system for reporting and processing a matched trade from a market in response to orders submitted by traders includes a management subsystem for developing configuration data regarding products that are to be traded and traders who are authorized to trade. The system further includes a trade processing subsystem for receiving first data representing the matched trade and which processes the first data to create second data representing a processed trade wherein the second data are transmitted to a first recipient and a reporting subsystem for receiving market information and which processes the market information and transmits the processed market information to a second recipient. Methods of reporting and/or processing are also disclosed.