Manuscript and Power Point presentation slides ( presented on 21st May at "China Bioenergy Technology and Investment Summit".

1. Technological Development from Biogas Plant to Anaerobic Digestion; Use of Logic Model to Develop a Poly System Supply Chain Management China Bio-Energy Technology & Investment Summit 20th-21st May 2010 Dr. Smarajit Roy Dr Smarajit Roy (Neat U Loo) 1

2. Aerobic Digestion Biogas collection Removable cover Seal Inlet Biogas Overflow tank Slurry Outflow Dr Smarajit Roy (Neat U Loo) 2

3. Anaerobic Digestion Process Carbohydrates Sugars Carbonic Acids & Alcehols Methane Carbon Dioxide Hydrogen Acetic & Carbon Dioxide Fatty Acids Fats Hydrogen Carbon Dioxide Ammonia C6H12O6 -> 3CO2 + 3CH4 Proteins Amino Acids Hydrolysis Acetogenesis Methanogenesis Acidogenesis Dr Smarajit Roy (Neat U Loo) 3

4. Anacis Island Wastewater Treatment Plant Dr Smarajit Roy (Neat U Loo) 4

5. EEH (Steam) Energy Balance Dr Smarajit Roy (Neat U Loo) stevebungay@monsal.co.uk, ( 13th European Biosolids & Organic Resources Conference & Workshop.) 5

6. 6 THERMAL HYDROLYSIS IMPACT ON POWER GENERATION Dewatering Pasteurization Transport Dewatering Transport Hydrolysis – breaks down large molecules to improve digestion Dr Smarajit Roy (Neat U Loo)

7. Enhanced Enzymic Hydrolysis Dr Smarajit Roy (Neat U Loo) 7

8. Enhanced EnzymicHydrolyis(Steam Heating) Flow Sheet Dr Smarajit Roy (Neat U Loo) 8

9. Thermal Hydro Cambi’sThermal Hydrolysis Plant (THP) Black & Veatch Contracting UK installed plant at Celtic Anglian Water (CAW) Dr Smarajit Roy (Neat U Loo) 9

10. Cambi’s Largest Thermal Hydrolysis Plant £75M sludge treatment contract Plant will process biosolidswhich can be applied to land as fertilizer Heat & Power Plant to generate up to 10 MegaWatts of Electricity UK has set target of 15% of energy supplied by the national grid to come from renewable sources by 2020 Plant expected to handle around 91,000 tonnes of dry solids per year Digestion Plant will serve a population of 3M people Dr Smarajit Roy (Neat U Loo) 10

12. Digester loading up to 6 kg VS/m3/ day (2-3 x conventional digestion)

13. 10-12% DS feed to digesters

14. >60 % VS reduction

15. 5.6 MW electricity generation

16. >30% dry solids Class A cakeCourtesy of Dr Smarajit Roy (Neat U Loo) 11

17. Cogeneration – Energy Balance, Example热电联产—能量平衡举例 12,000 metric tons dry solids/year， 80% volatile solids content. 处理能力每年12000 吨干重固体， VS% 为80% Heat loss热损失* 544 kW Biogas to engine 3970 kW Electricity产电 1584 kW Biogas沼气 - 4114 kW Cooling water冷却水894 kW Hot water to 热水 HVAC 714 kW Hot Water** 136 kW Thermal Hydrolysis 热水解 1032 kW Hot water to热水 HVAC 743 kW Steam from exhaust热尾气产蒸汽 948 kW Warm sludge热污泥 489 kW Biogas to steam boiler 沼气供蒸汽锅炉144 kW Dr Smarajit Roy (Neat U Loo) 12

18. WHY USE CAMBI THERMAL HYDROLYSIS?为什么采用水热解THP技术 提高沼气产量 高品质生物固体肥料 提高消化产率 提高能效和封闭消毒 THP消化 传统消化 Dr Smarajit Roy (Neat U Loo) 13

19. “Neat U Loo” Process Flow Dr Smarajit Roy (Neat U Loo) 14

20. Dr Smarajit Roy (Neat U Loo) Tripartite Partnership 15

21. Parallel System Water Main (In & Out) Dr Smarajit Roy (Neat U Loo) Pump Water Mains HOUSE PLANT Drinking Water Tank Toilet Water Tank Filter Inorganic Solids Urine Separating Decentralised Main Toilet Bath Kitchen Nitrogen + Phosphorous Sludge Holding Tank Decentralised Anaerobic Treatment Plant Soil Conditioning Waste Water Sea Combined Heat & Power (CHP) Plant Fertilizer Waste Water Waste Water 16