(WO9737942-A1)      In a process to treat waste water especially condensate or water which from e.g. cesspools, the novelty is that the water is alternately brought to an aerobic and then anaerobic condition.    The process preferably additionally comprises the following steps: (a) substances which resist break-down are exposed to catalysts and broken up (1); (b) the water is then subjected to ultrafiltration (4); (c) the water is then placed in a buffer-holder (5) before being subjected to nano-filtration (6); and (d) the residue from the two filtration stages are then subjected to the alternate aerobic and anaerobic treatment together with nutrients added at that stage.    USE -   The process and assembly compost organic residues esp. nitrogen compounds in waste water.    ADVANTAGE -   The process and assembly deal effectively with organic substances whose biological breakdown is difficult. The effectiveness of the process can be monitored with optical instruments.    (DE19614214-C2)      In a process to treat waste water especially condensate or water which from e.g. cesspools, the novelty is that the water is alternately brought to an aerobic and then anaerobic condition.    The process preferably additionally comprises the following steps: (a) substances which resist break-down are exposed to catalysts and broken up (1); (b) the water is then subjected to ultrafiltration (4); (c) the water is then placed in a buffer-holder (5) before being subjected to nano-filtration (6); and (d) the residue from the two filtration stages are then subjected to the alternate aerobic and anaerobic treatment together with nutrients added at that stage.    USE -   The process and assembly compost organic residues esp. nitrogen compounds in waste water.    ADVANTAGE -   The process and assembly deal effectively with organic substances whose biological breakdown is difficult. The effectiveness of the process can be monitored with optical instruments.    (EP846083-A1)      In a process to treat waste water especially condensate or water which from e.g. cesspools, the novelty is that the water is alternately brought to an aerobic and then anaerobic condition.    The process preferably additionally comprises the following steps: (a) substances which resist break-down are exposed to catalysts and broken up (1); (b) the water is then subjected to ultrafiltration (4); (c) the water is then placed in a buffer-holder (5) before being subjected to nano-filtration (6); and (d) the residue from the two filtration stages are then subjected to the alternate aerobic and anaerobic treatment together with nutrients added at that stage.    USE -   The process and assembly compost organic residues esp. nitrogen compounds in waste water.    ADVANTAGE -   The process and assembly deal effectively with organic substances whose biological breakdown is difficult. The effectiveness of the process can be monitored with optical instruments.    (US6113787-A)      In a process to treat waste water especially condensate or water which from e.g. cesspools, the novelty is that the water is alternately brought to an aerobic and then anaerobic condition.    The process preferably additionally comprises the following steps: (a) substances which resist break-down are exposed to catalysts and broken up (1); (b) the water is then subjected to ultrafiltration (4); (c) the water is then placed in a buffer-holder (5) before being subjected to nano-filtration (6); and (d) the residue from the two filtration stages are then subjected to the alternate aerobic and anaerobic treatment together with nutrients added at that stage.    USE -   The process and assembly compost organic residues esp. nitrogen compounds in waste water.    ADVANTAGE -   The process and assembly deal effectively with organic substances whose biological breakdown is difficult. The effectiveness of the process can be monitored with optical instruments.    (EP846083-B1)      In a process to treat waste water especially condensate or water which from e.g. cesspools, the novelty is that the water is alternately brought to an aerobic and then anaerobic condition.    The process preferably additionally comprises the following steps: (a) substances which resist break-down are exposed to catalysts and broken up (1); (b) the water is then subjected to ultrafiltration (4); (c) the water is then placed in a buffer-holder (5) before being subjected to nano-filtration (6); and (d) the residue from the two filtration stages are then subjected to the alternate aerobic and anaerobic treatment together with nutrients added at that stage.    USE -   The process and assembly compost organic residues esp. nitrogen compounds in waste water.    ADVANTAGE -   The process and assembly deal effectively with organic substances whose biological breakdown is difficult. The effectiveness of the process can be monitored with optical instruments.    (JP11510433-W)      In a process to treat waste water especially condensate or water which from e.g. cesspools, the novelty is that the water is alternately brought to an aerobic and then anaerobic condition.    The process preferably additionally comprises the following steps: (a) substances which resist break-down are exposed to catalysts and broken up (1); (b) the water is then subjected to ultrafiltration (4); (c) the water is then placed in a buffer-holder (5) before being subjected to nano-filtration (6); and (d) the residue from the two filtration stages are then subjected to the alternate aerobic and anaerobic treatment together with nutrients added at that stage.    USE -   The process and assembly compost organic residues esp. nitrogen compounds in waste water.    ADVANTAGE -   The process and assembly deal effectively with organic substances whose biological breakdown is difficult. The effectiveness of the process can be monitored with optical instruments.