A treatment system for liquid or liquid and solid effluent. The system is enclosed within a pipe, duct (10) or trench and comprises one or more sloping filter beds (12, 13, 14) with a population of effluent decomposing organisms such as earthworms and mothflies, and an overlying air space. The aqueous media effluent inlet (11) is located above the uppermost filter bed at an upper end and the solid waste input inlet (31), when included, is located downstream of the aqueous media inlet so that the...

A self cleaning filter for aqueous media such as sewage effluent which comprises a ventilated bed of discrete filtration material such as particulates, finely ground or shredded non-oil plastic materials, clay particulates, ground zeolite, diatomaceous earth powdered activated carbon, short fibre carbon and fine crushed charcoal, in which is dispersed a population of living organisms such as worms, insects, mothfly larvae, collembola, crustaceans and mites, which organisms have the ability to ma...

A filtration bed support for biolytic filtration wherein the filtration bed comprises a bed of solids in various stages of decomposition ranging from raw unprocessed organic material on the surface of the bed to fully decomposed humus which forms the bulk of the bed. The bed is kept from blocking by living organisms. The support comprises a three dimensional humus matrix lattice.