Cleaning large running sewers

[Pulpboy]

The mill I'm at has a gravity sewer system which flows through 1200mm pipe and through various distribution boxes. Flow rate of 900 to 1100 l/s. Flow rates during maintenance days are around 50 to 300 l/s. Temp is 50 to 60 deg C

To avoid costly bypassing is there a way to clean the ditribution boxes / pipe while running to get rid of the rocks & debris which I believe are stopping the slide gates from closing properly.

 

[ccor]

Jetting can be successfully used for runs less than say 400-ft between manholes or clean-outs. Basically just a high-pressure washer that can travel the pipe. I've seen the water jet cut through severe root intrusions, of course, I've also seen it rupture older clay pipes.

 

[RWF7437]

I'd suggest you make friends with your local Public Sanitary Sewer service provider. They will have the skills, equipment and experience you need to draw on. If you treat them nicely they will share those with you. They will probably NOT do the work for you but can direct you to private contractors and equipment suppliers who can.

Ask respectfully. My experience is that they will respond in kind.

Good luck

 

[Ussuri]

Very often if you write them a letter they will be obliged to respond because of customer service which they are often scored on against kpi's.