Abstract: A process for treatment of waste activated sludge from a BNR process, which includes the steps of: (a) concentration of the activated sludge from a total solids content (dry weight) of 0.1-1.0% w/v to an increased solids content of 1.5-5.0% w/v, wherein said solids largely contain bacterial biomass from prior aeration of the activated sludge; (b) disrupting bacterial cells contained in the biomass so as to release fermentable nutrients from said bacterial cells; (c) passing the activated sludge from step (b) through an anaerobic digester system; and (d) removing N and/or P from the residue obtained after step (c).

Abstract: A process of waste treatment which includes the following steps: (a) passing waste material comprising an insoluble component through an anaerobic bioreactor system including a plurality of bioreactors in series and maintaining said insoluble component as a suspension in the waste material, whereby the pH of the waste material is maintained below 4.9 for a period of at least 24 hours; b) aerating the waste material after step (a); and (c) removing the insoluble component from the waste material before or after step (b). The process also provides for successful treatment of greasetrap waste.

Abstract: A process of waste treatment which includes the following steps: (a) passing waste material comprising an insoluble component through an anaerobic bioreactor system including a plurality of bioreactors in series and maintaining said insoluble component as a suspension in the waste material, whereby the pH of the waste material is maintained below 4.9 for a period of at least 24 hours; b) aerating the waste material after step (a); and (c) removing the insoluble component from the waste material before or after step (b). The process also provides for successful treatment of greasetrap waste.

Abstract: A waste treatment apparatus (10) including one or more vertically oriented curtains (11) each formed of mesh material having a minimal aperture size of 0.001 mm, means for applying liquid waste to said curtain(s) located above said curtain (17, 15) and collection means (20A) for collection of treated waste after passage through said one or more curtains (12). There is also provided a method of treatment of waste using the waste treatment apparatus.

Abstract: A waste treatment process including the steps of: (i) passing waste material which may comprise animal or human faeces comprising an insoluble component such as lignocellulose through a bioreactor system including a plurality of bioreactors in series and maintaining said insoluble component as a suspension in said waste material; and (ii) separating suitably by filtration the insoluble component from the waste material. A waste treatment plant including: (i) a bioreactor system including a plurality of bioreactors in series for treatment of waste material; (ii) means such as filtration for separating an insoluble component from said waste material after passage through the bioreactor system.