The Stormwater Blog 

Contech Stormwater experts discussing Low Impact Development, Onsite Water Management, Rainwater Harvesting and all things Stormwater.

Entries for 'Hannah Schlachter'

Hydrodynamic Separation Devices: Online Vs. Offline
The question of whether a hydrodynamic separator should be online vs. offline is something that engineers and stormwater treatment manufacturers deal with on a daily basis.  Online systems allow storm events that are greater than the design storm to be bypassed through the treatment unit, eliminating the need for a separate bypass structure.  This results in fewer structures and a smaller system footprint; which leads to a lower landed cost.  
Hydrodynamic Separators vs. Oil/Water Separators

There are a vast number of stormwater separators on the market which can make it challenging when selecting the ideal solution for each project.  Hydrodynamic separators and oil/water separators are often used interchangeably in the industry but each system is unique and one may be better suited for the overall treatment goals of the project.   So what is the difference between a hydrodynamic separator and an oil water separator and how can you determine which one is best suited for your project?

6 Key Points of Developing a Stormwater Trash Control Strategy
In my last blog post, What Kind of Trash and Debris is in Stormwater Runoff?, I wrote about the types of trash found in stormwater and the effects trash and debris have on our environment and infrastructure. 

Continuing with the topic of trash control; if your community is interested in developing a trash control strategy here are six key points that should be considered
What Kind of Trash and Debris is in Stormwater Runoff?

We all know that stormwater runoff carries trash and debris into our water ways, but have you ever wondered what kind of material this runoff picks up?

A Contech Continuous Deflective Separation unit (CDS) was installed on a site in California and the performance of the unit was monitored over a 12 months.  During a maintenance event, the trash and debris that was captured by the CDS was removed, and the contents were separated and characterized. 

Why Pretreat Your Stormwater Infiltration System?
Hands down, the most important factor in the sustainability of any infiltration system is proper maintenance. By their very nature, infiltration systems are difficult to inspect and maintain. The selection of a cost-effective and easy-to-access treatment system can mean a huge difference in maintenance expenses for years to come.
Traditional stormwater criteria require both improving the quality and managing the quantity of runoff. One of the best practices is to incorporate pretreatment, detention and treatment into an integrated system. This approach can meet total daily maximum load requirements by providing a high level of pollutant removal and preventing erosion damage from peak flows. Many areas may require only some of these processes while some areas may require all of them.

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