ROSSEP Process

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:

  1. We perform a water analysis on your raw water supply and collect information on your existing system design.
  2. 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.
  3. Our chemists will synthesize the RO/NF concentrate water in our lab.
  4. The antiscalant and dosage recommended by PROTON® will be tested to verify efficacy. The tests will always be performed against a control (no antiscalant).
  5. 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.
  6. Different scale inhibitors are tested to determine the optimal product for your operation.
  7. 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.
  8. 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.

reverse osmosis using ROSSEP process