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Mdnpe, how did you get on with this pH adjustment system? I am looking at doing something very similar except with sulphuric acid Quentin

Thanks metengr, the static mixers on offer there should do the trick from both a materials and efficiency point of view. My only concern now is to prevent any backflow of waste water into the acid line tank...I'm not sure if a non-return valve would be sufficient. Perhaps I need to install an...

I am working on a project to neutralise alkaline spikes in our plant effluent to between pH 6 to 8, and am looking to use 50% or 98% sulphuric acid for this. The place in the system where I am considering injeting the acid is in a 200mm galvanised pipe which feeds the DAF (dissolved air...

I have been assigned to a project involving the neutralising of high pH spikes in our plant effluent. The effluent currently flows at up to 80 litres/sec (avg 30 litres/sec) in a 8" galvanised pipe from a contrashear pit (solids removal) via a buffer tank to a DAF (dissolved air flotation)...

I am installing a small balance tank, 750mm diam, 1 metre tall, to handle 20 cubes/hr of juice flow. Will a conical base with the outlet at the bottom cause a swirling motion which I am trying to minimise? The tank has an anticlockwise tangential entry half way up, and we are in the southern...

The pumps are in series. I am only proposing to use the second smaller pump in the system because this water supply will be required very infrequently, and this would be the easiest thing to do. It doesn't involve having to change over too much pipework or make valve changes. If the system was...

I'm now wondering if running two pumps in series always poses this problem, or if certain impellor types in the second pump will always spin in the correct direction when they have feed introduced to them and they are not powered up. If not and you do have a two pump system should you always be...

Cheers mate. Looks like bypassing the second pump with valves is the sensible option. Quentin

I am proposing a system using existing pumps and lines to transport water to an area that now requires this water in our factory. For simplicity sake, this proposal utilises two centrif pumps in series, 20HP and 10HP although the first pump (20HP) would be sufficient for the task. The system...