Sewage sludge
Videos
Sewage sludge is the residual, semi-solid material that is produced as a by-product during sewage treatment of industrial or municipal wastewater. The term "septage" also refers to sludge from simple
Desiccation cracks in dried sludge, the hard final remains from a sewage plant
Sewage sludge in a beaker from a treatment plant
A shovel excavator loading solid sewage sludge for land application.
Composting toilet
Videos
A composting toilet is a type of dry toilet that treats human waste by a biological process called composting. This process leads to the decomposition of organic matter and turns human waste into comp
This is the pedestal for a split-system composting toilet where collection/treatment chambers are located below the bathroom floor.
Inexpensive do-it-yourself compost toilet at Dial House, Essex, England, utilizing an old desk as the toilet unit.
Public composting toilet at a park in Helsinki, Finland