Silica A Major Root Cause Of RO Membrane Damage
Physical damage to the membrane is a common phenomenon. The physical damage could be such as increasing salt passage, a change in flux, and so
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UF/MBR Autopsy Services
#membrane autopsy
With the experience of more than two decades in water analysis, Vipanan offers Membrane Autopsy Services to its customer’s which helps to understand the exact root cause of membrane failure and define methods of troubleshooting.
UF/ MBR membrane tend to undergo performance deterioration with time, which depends on the efficiency of the pre-treatment. The decline in performance due to fouling of the membrane, in many cases, can be restored to some extent by means of chemical cleaning. However, the performance decline due to irreversible damage to membrane polymer cannot be restored. In order to find out the actual reason for the irreversible decline in membrane performance, membrane autopsy becomes very essential, in addition to the investigation of the operational history of the membrane system.
All UF and MBR technologis are based on the ultrafiltration , but it can block or reduce the product flow due to organic , inorganic and microbiological deposition. In case of abnormal deposition of any organic or inorganic substance, standard CIP program is not effective. Our experience highlights that these membranes can be fouled by minerals and metals also. Also EPS (Extra Polymeric substances) provide base to organic and inorganic deposition.
When performance loss is observed through:
- Increased cleaning frequency
- Inefficient / Ineffective cleaning
- Flow restriction and frequent cleaning
- Chemical, microbiological and microscopic examination.
- Identification of the key foulants.
- Documentation through photographs.
- Tensile Test.
- SEM (Scanning Electron Microscopy) and EDS (Energy Dispersive Spectroscopy.)
- Comments, Solutions & Recommendations.
- Exact reason for failure of system performance can be found out.
- Effectiveness of cleaning chemicals can be checked.
- Periodic check enable us to take 'in time' corrective action,saving cost of membrane replacement and down time.
- Valuable inputs to improve system designs and operation to overcome problems.
- Rehabilitate membranes.
- Areas where pretreatment can be improved.
- Improve cleaning regimes used by the plants.
- Adjust / fine-tune plant operating conditions.
- Thereby, Save future cost of membranes.
Unique and silent communication with membranes
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