Method for purifying water
OwnerTeuvo Kekko, Pekka Lönnqvist +2inventors
InventorsTeuvo Kekko, Pekka Lönnqvist, Pasi Makkonen, Jyri Maunuksela
Life of this patent
Estimating the term…
Abstract
A method and a system for continuous purification of wastewater and/or utility water, wherein peracetic acid is metered into the wastewater, the flow of the wastewater, redox potential and the concentration of peracetic acid are measured, and the metering of peracetic acid is adjusted relative to the variation in the flow and on the basis of the concentration of peracetic acid and redox potential.
Claims13
A method for continuous purification of wastewater, wherein peracetic acid is metered in wastewater, the flow of the wastewater and redox potential are measured, and the concentration of peracetic acid is measured downstream of the metering,
- the metering of peracetic acid is adjusted directly relative to the variation of the flow and so as to have a concentration of peracetic acid of less than 0.8 ppm and a redox potential of 50 to 250 mV.
A method for continuous purification of utility water, wherein peracetic acid is metered in raw water, the flow of the raw water and redox potential are measured, and the concentration of peracetic acid is measured downstream of the metering,
- the metering of peracetic acid is adjusted directly relative to the flow and so as to have a concentration of peracetic acid of less than 0.8 ppm and a redox potential of 50 to 250 mV.
A system for purifying water, comprising
- a peracetic acid metering device,
- a flow meter for measuring the flow of the water,
- a sensor for measuring the redox potential,
- an analyzer for measuring the concentration of peracetic acid and
- means for adjusting the metering device.
Dependencies are inferred from the claim text.