TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The fiber-reinforced composite material comprises fibers comprising glass fibers, carbon fibers, ceramic fibers, synthetic fibers, natural fibers and/or metal fibers. The matrix of the composite material comprises polymers, cement and/or concrete.    TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Components: The wastewater is conductible through the functional devices comprising device (b), device (c), device (i), the device for sedimenting the solids to form sludge, and device (j). The elevated inlet region for the wastewater is located on a ramp drivable by a tank truck. The device for separating coarse grained particles is a sieve and/or a sand trap. The device for separating fat is a fat trap. The device for generating biogas is a dome reactor. The device for sedimentation of solids and for forming and compacting sludge under anaerobic conditions is a stabilizing reactor with at least two chambers that are fluidically connected with each other. The device for anaerobic treatment of wastewater and for sedimentation of solids to form the sludge is a partition wall reactor with at least two reaction chambers that are fluidically connected with each other. The artificial wet area for further purification of anaerobically treated wastewater is planted. The device for dewatering the sludge separated from the wastewater is a horizontal sand filter. The device for composting and disinfecting the dried sludge is a tunnel dryer. The device for anaerobic treatment of wastewater and for sedimentation of solids to form sludge and/or the device for sedimenting solids and for forming and compacting the sludge under anaerobic conditions, comprise at least one device for collecting and discharging biogas. The plant comprises: the device (a), the fat trap with integrated sand trap (2), which are connected fluidically with the device (a) through a pipe, a device for storing the fat isolable in the fat trap (2a), which is fluidically connected with the fat trap through a pipe, the dome reactor for generating the biogas, which is fluidically connected with the fat trap through a pipe, a sealable device for discharging the biogas from the dome reactor, the partition wall reactor that is fluidically connected with the dome reactor through a pipe, the artificial wet area that is fluidically connected with the partition wall reactor through a pipe, an outlet for the treated wastewater from the artificial wet area, at least one sealable pipe for supplying the sludge from partition wall reactor to at least one horizontal sand filter, at least one pipe for discharging the wastewater from the sand filter, at least one transport device for transporting the dried sludge from the sand filter to at least one tunnel dryer, and at least one transport device for discharging the compost formed in the tunnel dryer; or the device (a), the sieve that is fluidically connected with the device (a) through a pipe, a storage container for the coarse grained particles that are separable in the sieve, which is connected with the sieve through a sealable transport device, the fat trap with integrated sand trap, which are connected fluidically with the sieve through a pipe, a device for storing the fat isolable in the fat trap, which is fluidically connected with the fat trap through a pipe, a first anaerobic stabilization reactor that is fluidically connected with the fat trap through a collecting pipe and a pipe with the device for opening or closing the pipe, a second anaerobic stabilization reactor that is fluidically connected with the fat trap through a collecting pipe and a pipe with the device for opening or closing the pipe, a partition wall reactor that is fluidically connected with the first anaerobic stabilization reactor through a collecting pipe and a pipe with a device for opening or closing the pipe, and with the second anaerobic stabilization reactor through a collecting pipe and a pipe with a device for opening or closing the pipe, an artificial wet area that is fluidically connected with the partition wall reactor through a pipe, an outlet for the treated wastewater from the artificial wet area, a horizontal sand filter, which is suppliable with the sludge through a pipe from the partition wall reactor, through a collecting pipe and a sealable pipe from the first anaerobic stabilization reactor, and through a collecting pipe and a sealable pipe from the second anaerobic stabilization reactor, at least one pipe for discharging the wastewater from the sand filter, at least one transport device for transporting the dried sludge from the sand filter to at least one tunnel dryer, and at least one transport device for discharging the compost formed in the tunnel dryer. The partition wall parts and the side wall parts are connected through columnar parts, which exhibit a recess for accommodating the side edges of the partition wall parts. The bottom part exhibits recesses formed by webs, for accommodating the lower side edges of the front wall portion, rear wall portion, side wall portion and partition wall portion. The fluid tightness is ensured by plastic gaskets, which rotate the contact points of the components with each other. The front wall portion, rear wall portion, side wall portion and partition wall portion are joined together by screws. The heads of the screws are recessed. The inlet of the partition wall reactor module is fluidically connected with a pre-chamber module comprising components made of fiber-reinforced composite material.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The polymers comprise synthetic polymers and/or biopolymers. The synthetic polymers comprise thermoset, elastomer and/or thermoplastic. EXAMPLE - No suitable example given.