CrystalStream Technologies (CST) products

The EPA website states, "In 1996, over 2,500 beaches in the United States were posted with warnings or closed for at least one day because the water was contaminated. Today, many beaches are either not monitored well or not monitored at all and consequently Americans continue to face risks of illness from swimming and other activities in coastal areas, lakes, and rivers that contain disease-causing microbes.

The CrystalCombo Hybrid Polisher provides all of the advantages of the CrystalClean separator and beyond. Now you can have a complete treatment train all in one package.  The full flow treatment of trash and debris, spill protection, and excellent sediment particle separation stay in place and are even enhanced at low flows.  In addition to the verified performance of our separator, selected low flows are then processed by up to five types of filtration media or 18″ of media. 

The maximum flows shown are usually the 10-year or 25-year flows taken from the pipe system design chart. Water Quality flows are typically 20 to 30% of this flow. Our designs analyze and can accept the largest expected storm flows, but center their efficiency around the water quality storms.

The maximum flows shown are usually the 10-year or 25-year flows taken from the pipe system design chart. Water Quality flows are typically 20 to 30% of this flow. Our designs analyze and can accept the largest expected storm flows, but center their efficiency around the water quality storms. Your local regulations may allow slightly higher than maximum flows, or may require slightly lower flow limits.

In twin vault systems, the trash screening basket and two of the three baffles are in the front vault. A third baffle, the spill protection reservoir, and the coconut fiber filter are in the second vault. Flows enter the device from the endwall, top, or either side wall of the front vault, pass through the treatment elements in that vault, and then cross over to the second vault via a connector pipe. The flows then pass through the remaining elements in the second vault, and exit out the back of that vault through the endwall, or either side wall. The two vaults can be parallel, as shown in the sketch above, or in line. They also can be set up in other arrangements to accommodate your storm drain design. You may want to look at the sketches in the “Array” section of products to see other possible arrangements. The sizes of our twin vault devices are shown in the Technical Details tab. In some areas, other sizes may be available.