Sand filters - Import export

Colloide‘s Dynamic Sand Filter offers an excellent treatment system for the removal of solids and other contaminants from a water/wastewater stream. This filter is always on line, continually filtering the incoming water while continually backwashing a small portion of the sand bed. The Dynamic Sand Filter process: The feed water is fed into the filter at the base of the active sand bed through the distribution ring. It then flows upward through the downward moving sand bed where the solids are filtered out. The clean filtrate exits the filter through the overflow weir. The continuous reject flow of washing water is discharged through a separate outlet. The dirty sand is continuously removed from the active sand bed thanks to the action of the air-lift pump. This pump draws the contaminated sand from the bottom of the filter body. A mixture of sand, dirty particles and water is transported upward through the air-lift pipe into the washing chamber at the top of the filter.

Clarifiers are settling tanks built for continuous removal of solids. Clarifiers are generally used to remove solid particulates or suspended solids from liquid for clarification and (or) thickening. We use lamella settlers within our clarifiers, which greatly increases the clarifier capacity and enables a much greater flow to be treated in the same footprint as conventional clarification. Our design also ensures maximum efficiency in terms of upward flow velocities. The lamella settlers can be used in new builds and are also an excellent option for upgrading and increasing the flow through an existing plant. Our clarifiers can be designed in a wide range of sizes and configurations to suit the individual needs of each of our clients. The clarifier can be used as a standalone system, taking the full plant flow, with or without additional equipment such as sand filters, screens, etc.

Automatic and Manual Disc Filters, Automatic, Semi-Automatic and Manual Screen Filters, Media Filters and Sand Separators. Water collected in reservoirs may come from floodwater or treated water. Collected organic matter and debris can lead to blockages anywhere in the irrigation system. The quality of water in canals and rivers changes dramatically from season to season, requiring high-performance filtration systems that can handle significant variations and fluctuations in water quality. Every water source presents its own diverse challenges. With over 30 years’ experience, we can provide filtration solutions for any water source including, Rivers, Wells, Canals, Wastewater and Reservoirs.