open top tank 1

[krolley]

Hi all,

The designer of my waste water treatment plant is using open top tanks for neutralising the acidic water with lime. From that tank; it goes to a thickner. Is there a specific reason to use open top tanks; other than cost? We have gratings on top of the tank where operators will be doing rounds to check instruments etc.

I don't like these open top tanks.


Thanks

 

[Duwe6]

Cost, and the ability to view the contents.

I would use a 48-52 inch tall handrail on the catwalk, and leave it open-top. OSHA's 42-inch high handrails are too low for most US males, and the guys' center-of-gravity is above 42". The insurance folks seem to have quietly taken note of this fact -- measure a shopping mall mezz handrail.

Once again OSHA trumps reality, fact, and good engineering.

 

[77JQX]

I think the open tank will have better venting and cleaning. Mixing acids and bases can produce corrosive gasses.

 

[krolley]

Thanks a lot guys for your input. I like the idea that its easier to clean and any heat of reaction can be released with ease to the atmosphere.
However, in terms of people working on top, its a drawback.