| 摘要 |
#CMT# #/CMT# The method comprises performing anaerobic digestion in an anaerobic digestion compartment (3), performing aerobic purification in an aerobic purification compartment (4) by distributing air, and performing decantation in a decantation compartment (5) so that materials undergone the aerobic purification pass through a sludge bed obtained from the decantation stage in a up-down direction. The decantation step is also a step of reacting the biological substances having undergone the step of aerobic treatment and intending to undergo the step of decanting the sludge. #CMT# : #/CMT# The method comprises performing anaerobic digestion in an anaerobic digestion compartment (3), performing aerobic purification in an aerobic purification compartment (4) by distributing air, and performing decantation in a decantation compartment (5) so that materials undergone the aerobic purification pass through a sludge bed obtained from the decantation stage in a up-down direction. The decantation step is also a step of reacting the biological substances having undergone the step of aerobic treatment and intending to undergo the step of decanting the sludge. The anaerobic digestion step is analogous in effect to that achieved by a septic tank. The step of decantation/biological response limits the expansion in height of the sludge bed. The method further comprises taking the material to the top of the sludge bed and recycling it for a new step of anaerobic digestion so as to limit the expansion in height of the sludge bed. The method is applied for a population of 1-20. Independent claims are included for: (1) a device for noncollective cleansing for the purification of domestic wastewater type free culture activated sludge; (2) an installation for noncollective cleansing for the purification of domestic wastewater type free culture activated sludge; and (3) a sub-assembly for scrubbing free culture activated sludge and secondary settling. #CMT#USE : #/CMT# The method is useful for noncollective cleansing for the purification of domestic wastewater type free culture activated sludge (claimed) in a sewage treatment plant. #CMT#ADVANTAGE : #/CMT# The method is capable of controlling decantation of the sludge in large quantity, so that frequent draining are not necessary so as to avoid sludge discharge with the treated effluent and not to disturb the decantation, and avoiding the need for maintenance by a qualified personnel. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The figure shows a schematic view of a device for noncollective cleansing for the purification of domestic wastewater type free culture activated sludge. 3 : Anaerobic digestion compartment 4 : Aerobic purification compartment 5 : Decantation compartment 8 : Air distribution unit 10 : Cleansed and purified water evacuation unit. |
