AWC has developed a process that simulates your water quality and system conditions so as to guarantee the recommended pH and antiscalant dosage for your operation. This process predicts the outcome of a RO/NF pilot for control of inorganic species without interference from organic, biological, or colloidal materials which would be present in a field study.
ROSSEP is an acronym for Reverse Osmosis Scaling Synthetically Emulated by Precipitation. The process involves the following steps:
- We perform a water analysis on your raw water supply and collect information on your existing system design.
- Projections are run using our advanced PROTON® software. The projection will determine the concentrate water chemistry in the last element of your RO/NF membrane system, and will provide an antiscalant and dosage recommendation.
- Our chemists will synthesize the RO/NF concentrate water in our lab.
- The antiscalant and dosage recommended by PROTON® will be tested to verify efficacy. The tests will always be performed against a control (no antiscalant).
- Precipitates will be analyzed using our cutting-edge materials characterization instruments. This allows us to identify complex scaling/fouling mechanisms that may not be predicted by simple saturation calculations. For example, through ROSSEP, we discovered that iron hydroxide precipitation leads to silica scaling even when silica is undersaturated.
- Different scale inhibitors are tested to determine the optimal product for your operation.
- pH and dosages are optimized for operational cost savings. In situations where scaling can’t be fully inhibited, the lab results enable us to predict the required cleaning frequency in a full-scale system.
- An AWC field representative will assist you in setting up your dosing system. We will guarantee that the selected product, dosage and pH will result in a successful outcome.