The definitive volume on the subject is the companion to Metcalf and Eddy 'wastewater engineering'. Look up Metcalf and Eddy and sewers on google and it should pop up. OK for the theory but here is the UK's engineering short cut to gravity sewer design.
for 10 inch line use fall of 1/100
for 8...
We have a cationic and anionic resin column in the cabin for ultra pure water for industrial use, however, we are in a remote location (a days flight from anywhere industrial) and the health and safety issues of recharging the columns with strong acid/alkali rules out future use.
We are still...
Thank you everyone for the help. Some more details. The existing system comprises a set of primary filters - cartridge type then a multimedia filter. The Membrane appears to be a single pass membrane but surrounding this package is a set of chemical pumps. These provide pre membrane...
We have several groundwater borewells with up to 42mg/l SiO2, total mineralisation of about 4000mg/l but not much iron or manganese to worry about. The water obviously has a tendency to 'scale'. Our existing Reverse Osmosis plant needs three people to look after it 24/7, was built cheap and...
I like to think of these zones like you measure them in the field.
Take an O2 meter - drop it in an aerated activated sludge tank - you get 2mg/l dissolved oxygen engineered minimum for the health of floc forming bacteria. This is fully aerobic. Not ideal for the floc formers - they actually...
