Pumice for Filtration
Pumice is a light siliceous vesicular volcanic rock.
Our pumice is mined from a land based resource, within 50kms of Lake Taupo in the North Island of New Zealand, and it is characterized by its relative hardness and light weight in comparison to competing aggregates. The washing and screening of our pumice means that no “fine” particles are included.
As a filtration media,is an aggressively-filtering alternative to sand (and other filtration media).
The low specific gravity and high porosity ofmake it ideal for irrigation filtration systems and other water treatment processes and provides several advantages over other filtration media such as sand, expanded clay, and anthracite.
BENEFITS OF PUMICE FOR WATER TREATMENT APPLICATIONS INCLUDE:
- Improved filtration rates
- Better filtration bed expansion
- Less energy consumption
- Larger effective surface area
- Less intensive backwash requirements
- Low-cost filter refurbishment
INPROhas been selected for a number of filtration applications.
Please click these links for technical research and references:
- The performance of pumice as a filter bed material under rapid filtration conditions,
- A comparison study on the removal of suspended solids from irrigation water with pumice and sand–gravel media filters in the laboratory scale
- Whangarei District Council: pumice used in a Municipal Water Filtration Plant