How to Build a Biosand Filter Video Collection

Part 1 of a series on how to construct a biosand filter (BSF). Learn how to sieve the gravel and sand to the proper size and how to separate the piles to keep the quality consistent.

Watch how a mechanical sand sorter can simplify the sieving and sorting of gravel and sand into correct sizes to build a Biosand Filter (BSF).

Learn what to look for when using a steel mold to build a Biosand filter (BSF). Tips and valuable information about the steel mold will help you successfully construct concrete filter bodies.

Learn how to clean and oil a Biosand Filter (BSF) mold and to install the outlet hose before pouring the concrete container to achieve a smooth, trouble free concrete filter body.

Learn how to get the concrete mix just right before pouring the Biosand Filter (BSF). Get tips and tricks to get the right concrete consistency to get a strong filter body with a smooth, even surface.

Part of a video series on how to build a biosand filter (BSF). It shows step by step how to pour the concrete into the mold to avoid air pockets and to eliminate cracks between the concrete layers.

Part of a video series on how to build a biosand filter (BSF). It shows the pitfalls of using too wet and too dry concrete mixtures when pouring a BSF concrete filter body.

Part of a video series on how to build a biosand filter (BSF). Learn step by step how to remove a concrete biosand filter (BSF) from a steel mold. Learn tips to make demolding the filter easier and to prevent damage or cracks.

Part of a video series on how to build a biosand filter (BSF). It shows step by step how to check the quality of a newly constructed BSF. Learn how to check for flowrate, leaks or cracks and water level. Then how to cure the concrete to make sure the filter will work well for years to come.

Part of a video series on how to build a biosand filter (BSF). Learn how to remove the concrete filter from the steel mold when the concrete mixtures used to pour the filters were too wet or too dry.

Part of a video series on how to build a biosand filter (BSF). Find out how to correctly wash the separation and drainage gravel layers used when installing a BSF.

Part of a video series on how to build a biosand filter (BSF). Find out how to correctly wash the filtration sand used when installing a BSF.

Learn step by step how to correctly install a concrete BSF filter with layers of gravel and sand and how to check the flowrate. Learn tips to make filter installation efficient.

See different Biosand Filter (BSF) designs and learn how to install them correctly.

Part of a video series on how to build a biosand filter (BSF). Learn step by step how to disinfect the outlet tube after installation.