Phosphorus and its recycling from sludge, ash and water - a technical overview. Dr. Daniel Frank HELCOM workshop Berlin

Transcription

1 Phosphorus and its recycling from sludge, ash and water - a technical overview Dr. Daniel Frank HELCOM workshop Berlin

2 The modern P-Cycle Phosphorus Recovery and Recycling 10 % 90 % 225 Million t P Rock (Global Mining 2013, USGS 2015) Adapted from: 2

3 Why? And the role of wastewater/sewage sludge Phosphorus Critical Raw Material Demand relies on fossil resources geopolitically sensitive non-substitutable Bottleneck for fertiliser and food supply Excl. manure since already recycled Wastewater /sewage sludge is a relevant and renewable resource in a circular economy 3

4 Routes for P Recovery and Recycling in Europe 40 % 60 % 4

5 Hot Spots for P Recovery from Municipal Wastewater 100% P load *forced P dissolution * 50% of P load 25 % of P load 2b 40-90% of P load (solubility, contaminants) 3 1 2a 2b 3 Ash after Incineration Undrained sludge after anaerobic digestion Sludge Liquor after Dewatering Direct Agricultural Utilisation of Dewatered Sludge 2a 5-20 % of P load *30-50% of P load 1 > 80% of P load Note: Difference between precipitation/crystallization and actual separation/harvest 5

6 Sewage Sludge Routes in Europe and P? Dry matter in metric tons European total quantity: ~ 11 million tons sludge (dry matter) other landfill application to land incineration AT BE BG CY CZ DE DK EE ES FI FR GR HU IE IT LT LU LV MT NL PL PT RO SE SI SK UK CH Only absolute quantities reveal relevance Importance of harmonized definition of categories (i.e. what is OTHER???) (DESTATIS 2012) 6

7 Overview of P Recovery from Wasterwater Technologies in Europe Full-scale PEARL AirPrex NuReSys Demo / Pilot Lab-scale Aqueous phase (dissolved P) PHOSPAQ PhosphoGreen ANPHOS STRUVIA REPHOS NutriTec, DAS Wet sludge and liquor Naskeo PHORWater P-RoC, CSH With enforced P dissolution Budenheim EXTRAPHOS DCP LYSOGEST Gifhorn /CaP WASSTRIP Stuttgart TDH (allgemein) Sludge and sludge ash Acidic digestion /leaching Thermal Fert. Industry Mineral fertilizer ECOPHOS H 3 PO 4 /DCP MEPHREC P-slag THERMPHOS P 4 CleanMAP MAP/DAP TetraPhos H 3 PO 4 AshDec (Outotec) P-mineral RecoPhos H 3 PO 4 /P 4 LEACHPHOS P-mineral RECOPHOS DE MCP PYREG P-mineral KUBOTA P-slag 7

8 Overview and Status of P Recovery from Wasterwater Facilities in Europe No replication without demonstration! Kabbe 2013, AirPrex Kabbe 2016 Kabbe 2015, AirPrex 8

9 Ash Synergies Ressources Efficiency Phosphorus Waste Water Optimization Development Recovery Sludge P RECOVERY FROM THE AQUEOUS SLUDGE PHASE Recovery of Dissolved Ortho-Phosphate Consulting

10 AirPrex Benificial e Recovery Kabbe, AirPrex unit in Amsterdam Source: P-REX factsheet

11 Why e? A feasability example. The practical example of WWTP Neuwerk (Niersverband) Savings due to reduced maintenance (scaling and abrasion) 15% Total savings: 474,000 /a benefit due to struvite sales 10 % savings due to better dewaterability and lower disposal cost 75% Sources: Niersverband and P.C.S. 11

12 LysoGest Beneficial e and Energy Recovery LysoGest -Process Separate Sludge Treatment by using the CAMBI and AirPrex combination 12

13 WASSTRIP Beneficial e Recovery 13

14 Ash Synergies Ressources Efficiency Phosphorus Waste Water Optimization Development Recovery Sludge P RECOVERY FROM THE SOLID SLUDGE PHASE Consulting

15 P Recovery from the Solid Phase The Big Fish Hygenized Organo-Mineral Fertiliser Dewatered Sludge Sludge Drying Organo-mineral. CNP- Product Mono-incineration P-Precipitation Acidolation* Ash Mineral P- Product Thermochem. / metallurgical * incl. Conventional Fertiliser Production Contaminated Residues 15

16 Stuttgart Acidolation of Wet Sludge Source: P-REX factsheet

17 Budenheim (Wet Sludge) only CO 2 as solvent DCP commercial product Source: P-REX

18 MEPHREC (Sludge/Ash) Source: P-REX factsheet

19 AshDec (Ash) Source: P-REX factsheet

20 REMONDIS TetraPhos Source: Remondis, 2015 Various low-grade Raw Materials Commercial Products Closing various Material Cycles 20

21 Deutsche Phosphor-Plattform DPP e.v. KompetenzZentrum Wasser Berlin Deutsche Phosphor Plattform DPP e.v. Bornheimer Landwehr 46HH Frankfurt Kompetenzzentrum Wasser Berlin ggmbh Cicerostraße Berlin +49 (0) (0)