Avista™ | Black Box
Membrane Monitoring Device
The Avista Black Box is a proprietary, stand-alone monitoring device that replicates membrane performance without interrupting the reverse osmosis (RO) system operation.
The Avista Black Box simulates spiral wound membrane performance for pilot or full-scale systems and eliminates the need to sacrifice full-sized elements for autopsy. The Black Box is self-contained and designed to be maintenance free. The inlet is connected to a sample port on the membrane system at the location where membrane performance will be monitored. The concentrate and permeate lines are connected to the system drain.
- Developed for system troubleshooting and optimization.
- Autopsy results derived from the Avista Black Box mirror those obtained from a full-sized element.
Connects to Various Locations
The Avista Black Box can be installed in minutes, and additional units can be added to achieve multiple goals simultaneously.
- Analyze the potential for colloid, oraganic and biological fouling
- Determine the effects of oxidizers on lead membranes
- Identify potential scale formers
- Evaluate potential scale formers
- Test and optimize recovery rates
- Detect problems that are difficult to identify in the feed or concentrate
- Find a unique inter-stage foulant deposit
- Confirm pre-treatment is working properly
Avista Black Box: Unique Advantages
- Saves a membrane: Eliminate the need to sacrifice full-sized elements for analysis
- Pilot testing: Ideal for pilot testing and full-scale system evaluation
- Autopsy results: The Black Box foulant analysis results mirror those obtained from a full-sized element
- Easy to install: The Avista Black Box can be installed in minutes, and additional units can be added to achieve multiple goals simultaneously.
Black Box Case Study
An industrial membrane system, running 24/7, experienced unexplained membrane fouling. The fouling had led to a decrease in system performance and an increase in downtime for membrane cleaning.
- Cleanings occurred every 30 days, with marginal results.
- An Avista™ Black Box monitoring device was installed at the first stage of the system to model foulant deposition.
- The Black Box was removed after a flux decline of 8%.
While the system continued to run an autopsy was performed on the Black Box. The autopsy results identified colloidal fouling and the presence of organics on the membrane surface.
- Through the autopsy, it was discovered that a multimedia fi lter at the pretreatment stage wasn’t operating properly.
- A cleaning study was conducted on the Black Box membrane to identify cleaning chemicals capable of restoring proper membrane flow and pressure.
- Once the multimedia was repaired and the membranes were properly cleaned, the system was put back on-line.
- The customer now reports better permeate water quality and a higher production of water.
- The operating pressures have been reduced and the system is now cleaned every 6 months, and proper performance levels are restored after each cleaning.