Sanitary Energy Dissipation 1

[darren143]

Does anyone know where I can get an "off the shelf" energy dissipation system for a sanitary system? The peak flow is approximately 1500 liters per second with a velocity of 13.3 meters per second. The most important aspect of the system is that it must minimize or eliminate water atomization to keep the sanitary vapors to a minimum.

 

[civilperson]

A hydraulic jump at atmospheric pressure in a closed pipe, i.e. a change from 0.4 meter diameter to 1.0 meter diameter will slow the velocity to subcritical,(less than 3 m/sec).

 

[bimr]

There is a device called a hydro-brake:

http://www.hydrointernational.biz/cso/flowcontrol.php#

http://www.remacdublin.com/surgecontrol.htm

These devices are used more often in combined sewers and storm sewers.

Drop manholes can be used but as you are aware, there will be offgas.

If it is not practicable to use an energy brake, it will be necessary to construct the sewer with corrosion resistant materials.