The skid packaged designed by the original 3rd-party vendor did not meet the Client’s performance specifications for treating H2S in the water. Rally conducted a technical review of the process design and issued a report identifying the changes necessary to improve performance. This exercise established the process design basis for the second-generation water treatment system.
The process relies upon a highly-specialized probe to measure dissolved H2S in water. However, this type of probe was developed for open water systems, not for use as an inline instrument. After consultation with many vendors, Rally determined that there were no other instruments on the market that could make the required measurements.
Instead, Rally redesigned the system to use the original H2S probes in a fast-loop arrangement. This way, measurements could be taken in a low-flow zone, shielding the instrument from the high pressures seen elsewhere in the system. Redeploying the existing probes in a new way made it possible to take accurate H2S measurements, further enabling the automation of a peroxide dosing system.
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