Implementation of site-specific Clearlogx™ process optimization systems can help water treatment plants meet DBP requirements and maximize filter or membrane performance while minimizing capital expenses. |
Implementation of the site-specific Clearlogx™ process optimization system from Siemens can help WTPs meet DBP requirements and maximize filter performance while minimizing capital expenses in both conventional and membrane treatment systems.
The Clearlogx process optimization system combines the use of specialty coagulants, state-of-the-art optimization algorithms for coagulation and filtration processes, and Siemens' technical expertise, to yield the simplest, lowest capital cost alternative to DBP Rule compliance.
The systems can be integrated into Siemens' Memcor® membrane systems, or retrofitted into existing installations, to support greater membrane performance for especially difficult-to-treat water sources.
Application Modes
When applying a Clearlogx system with membrane filtration, there are two possible approaches: direct feed mode and clarifier feed mode. Selection of the appropriate operational mode depends on feed water turbidity and TOC concentrations.
Direct feed mode should typically be used with lower turbidity (< 10 NTU) and lower TOC (< 4 ppm) source waters. This mode provides for coagulant addition, precipitation and charge control, and then allows the stream to feed directly onto the membranes. Direct feed mode requires minimal capital investment.
Clarifier mode is well-suited for flashier waters with higher turbidity (> 10 NTU) and higher TOC (> 4 ppm) loads. This mode incorporates coagulant addition with clarification as well as a particle charge control tank between the clarifier and membranes where the acid or base is dosed.
Clearlogx systems have been tested on a variety of chemical coagulants including aluminum and iron-based compounds. Prior to piloting or demonstration, Siemens offers laboratory analysis and jar-testing, either on-site or at a Siemens facility, to determine if the system is a fit for a particular plant.
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