Taking wastewater from 18 houses
Taking wastewater from new commercial development of 12Ha
Kaimai Valley Services had a bad odour problem with a sewage pump station near a shopping centre in Matamata. They got regular complaints from shoppers that were unfortunate enough to be close by as well as from the shop owners who were concerned about the effect on their business. Kaimai Valley Services first tried a chemical dosing system that sprayed chlorine dioxide onto some plastic balls that the foul air was supposed to pass by and get deodorised however this system was an abject failure.
A major dairy factory in New Zealand needed to provide positive inlet pressure to a dosing pump that pumped very precise amounts of a viscous milk product into a process. Because the existing dosing pump did not have positive inlet pressure flows were erratic and the dosing inaccurate.
The issue was that any pump used to provide positive pressure had to have precise pressure control as well as an emergency over-pressure relief valve to ensure that the dosing pump was not over-pressurized.