Abstract: A wastewater treatment system and a wastewater treatment process, fluidly combining a one or more SBR (sequencing batch reactor) module/s, in which nitrification and denitrification of the wastewater are performed in sequences and one or more MBR (membrane bioreactor) module/s.

Abstract: A wastewater treatment system and a wastewater treatment process, fluidly combining a one or more SBR (sequencing batch reactor) module/s, in which nitrification and denitrification of the wastewater are performed in sequences and one or more MBR (membrane bioreactor) module/s.

Abstract: A wastewater treatment system and a wastewater treatment process, fluidly combining a one or more SBR (sequencing batch reactor) module/s, in which nitrification and denitrification of the wastewater are performed in sequences and one or more MBR (membrane bioreactor) module/s.

Abstract: A wastewater treatment system and a wastewater treatment process, fluidly combining a one or more SBR (sequencing batch reactor) module/s, in which nitrification and denitrification of the wastewater are performed in sequences and one or more MBR (membrane bioreactor) module/s.

Abstract: A filtration module includes a stack of at least two spacers. At least one spacer in the stack includes a first and a second outer plate and at least one internal permeate channel arranged in between the first and second outer plates such that the outer plates form two of the walls that define at least one internal permeate channel. The at least one internal permeate channel extends between two opposite side, other than the first and second outer plates, of the spacer. Moreover, the first and second outer plates of at least one spacer are porous or perforated and a filtration membrane is attached to the first and second outer plate of at least one spacer such that liquid transferred across the membrane is further transported through the pores or perforations to the at least one internal permeate channel.

Abstract: A filtration module includes a stack of at least two spacers. At least one spacer in the stack includes a first and a second outer plate and at least one internal permeate channel arranged in between the first and second outer plates such that the outer plates form two of the walls that define at least one internal permeate channel. The at least one internal permeate channel extends between two opposite side, other than the first and second outer plates, of the spacer. Moreover, the first and second outer plates of at least one spacer are porous or perforated and a filtration membrane is attached to the first and second outer plate of at least one spacer such that liquid transferred across the membrane is further transported through the pores or perforations to the at least one internal permeate channel.

Abstract: The invention relates to a permeate spacer module comprising a spacer and at least one collection device, which spacer comprises of support members which being spaced apart by at least one inserted element forming flow space or flow channels between the support members and the inserted element for guiding permeates to at least one permeate collection device connected to the flow space or the flow channels. The invention relates further to a membrane system comprising the permeate space module, a process for operating the membrane system, use of the membrane system, a membrane plant and use of the membrane plant.

Abstract: The invention relates to a permeate spacer module comprising a spacer and at least one collection device, which spacer comprises of support members which being spaced apart by at least one inserted element forming flow space or flow channels between the support members and the inserted element for guiding permeates to at least one permeate collection device connected to the flow space or the flow channels. The invention relates further to a membrane system comprising the permeate space module, a process for operating the membrane system, use of the membrane system, a membrane plant and use of the membrane plant.

Abstract: A novel method for control of biodegradation is disclosed, said biodegradation being performed by mixed cultures of microorganisms. Measurements and adjustment (preferably on-line) of process parameters which relate to metabolic activity of the microorganisms are performed in such a manner that simultaneous nitrification and denitrification is effected in the same environment while keeping the oxygenconcentration below 1 ppm. The method allows the use of high biomass concentrations (up to 20 kg/m.sup.3) and reduces energy consumption and process volume of e.g. activated sludge processes, thereby saving costs for waste water purification. Generally, the process ensures optimized conditions for microorganisms in the process. Also disclosed is a method for waste water purification and a waste water purification plant which both employ the method for control of biodegradation. Finally, a method for determining set-point values allowing the control is also disclosed.