Page 293 - Materials Chemistry, Second Edition
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274                         Life Cycle Assessment of Wastewater Treatment









              Edible  proteins  Biore nery  Prebiotics  Recover

                                               Nutrient  recovery  Fertilizer  product NP(K)
                       H2-oxidizing  bacteria                    Stable  biosolids



               CO 2    NH 3   H 2  O 2
                                               Reusable   wáter (N10)  Dewatering

               Biogas  +  NH 4  Water  electrolysis    Heat and  Power
                                                    Partition

              Anaerobic  digestion  Renewable  energy  Photo-MBR  Biogas  Anaerobic  digestion  Release


                WWTP                                                      Novel concepts for wastewater treatment with energy recovery through anaerobic digestion and improved resource recovery. (a) “Low-
                                     (b)       Used  water    Biomass  (5%), N, P  (d) energy” main line concept (From McCarty, P.L., et al., Environ. Sci. Technol., 45, 7100–6, 2011); (b) wastewater factory concept (From Matassa,  S., et al., Water Res., 68, 467–78, 2015); (c) separation of streams concept (From Verstraete, W., et al., Bioresour. Te

                     Cleansed  water  Air
               Land           Methane  stripping  Biochar  Pyrolysis


                                                      P rich cake
                              Membrane   ltration                Minor  ow (max. 10%)
               City
             Electricity  Heat             Natural stable  fertilizer (NSF)  N-rich  water  Filter press  partition-release-recover concept (From Batstone, D.J., et al., Chemosphere, 140, 2–11, 2015a).


               Co-  generation  Methane  Anaerobic  secondary  treatment  Coarse materials
                                           Heat and  Power  Biogas  Anaerobic  digestion

              Heat        Solids
                    Anaerobic  digestion  Primary  treatment  Clean water  UF/RO  Up-  concentration  Screening  Used water


                               Used  water
                                     (a)                 Major  ow   (c)
                                                                          FIGURE 13.1
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