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Hytran is suprb as well

most treatment books cover intakes and also ASCE Practice Manual on intakes for Hydro plants. Do a google book search as well

Pump manufacturers guarantee potable water supply pumps for continuous pumping without negative impacts on pumps. Standard practice is to supply the water demand over a maximum 0f 16-20 hours, to allow for maintenance. This is facilitated by sufficient operational storage , which allows constant...

Angola is likely to have no seismic code as the region has little seismic activity . The only recorded tremors in the region are from areas near the African Rift Valley(Around Kenya in the east) which is far from Angola ( in the West of East/Central Africa). This is my inference from my...

What is your system static head, total head,pipe class pipe dia and flow: without these you get a lot of general solutions some which do not apply to your situation

I agree with Eric C. In small distribution sysytems air release valves are not normally reqired as you have lots of air bleeding pints such as hydrants ,taps etc.

cimmeron,- the most critical aspect on selection of VSDs is the engineer's judgement on applicability on the situation at head. For example, high static head and small friction head situations will not work as a slight rammping down of the speed will move out of the pump curve suitable to the...

dbevil, do you want modulus of elasticity of sulphur or bulk modulus. i think you need the later. Modulus of elasticity refers to the pipe material. You need mudulus of elasticity and density of sulphur.

Pumpdesigner, I think your formula is the same as the other formula (Jakwsky equation from the Perry Handbook) It has been Rearranged. Iam not sure whether its in SI units so I will substutute K for the constant 0.07 in your formula. Lets take a= wave celerity(celocity as defined by MortenA...

your aeration treatment process should removing most of the iron and a little bit of manganese. Clarification (or plain settlemnt ) followed by filtration( either pressure of rapid sand filtration should suffice). The hydrogen sulphide will cuase problems with low pH so you might need some...

See reference notes supplied by Vent O Mat on their web site. It explains clearly mechanism of kinetic valves.

I see you are in New Zealand. I advise that you check the supplier's recommended application against the characteristics of your ground water. Main areas to compare are: - is your water quality consistent -do you have interferring gases such as carbon dioxide or hydrogen sulphide. -what is your...