Bjoern de Haan, BACKHUS North America

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CONCLUSION OF 1st RESEARCH PHASEDrying of sewage sludge with using the biological energy of the organic part of the sludge incombination with sun and wind effects, but without using any additional energy source can beachieved by using simple windrow technology.Process improvements can be achieved by:• More frequent turning• To roof the windrows with a simple shed (i.e. a greenhouse)
GOALS OF 2 ndRESEARCH PHASE- Repeat of drying tests un<strong>de</strong>r Winter/Spring conditions- Impact study of drying while constant adding of fresh sludgeSET UP 1st TRIAL:Same shed as in Summer test 2009.Windrow 1: Fresh sludge with a DM content of 17.6 %Windrow 2: Dried sludge, already stored for a while
Page 1 and 2: Drying sewage sludge with BACKHUS 1
Page 3 and 4: SOLAR SEWAGE SLUDGE METHODSEstimate
Page 5 and 6: JULY 07 th 2009 INSTALLATION OF A S
Page 7 and 8: FIRST DELIVERY OF SEWAGE SLUDGEProv
Page 9 and 10: TURNING FREQUENCYWindrow Z1: under
Page 11 and 12: Day 11 OF 1 stRESEARCH PHASEBefore
Page 13 and 14: INTERMEDIATE RESULTS DAY 19- Minor
Page 15 and 16: END OF 1 st RESEARCH PHASE AFTER 58
Page 17 and 18: COMPOST FLEECE IS NOT NECESSARYDue
Page 19: AREA CONSUMPTION WITH BACKHUS 16.30
Page 23 and 24: April 8, 2010 - FIRST ADDING OF FRE
Page 25 and 26: TEMPERATURE PROFIL FIRST TRIAL70605
Page 27 and 28: SECOND TRIALJune 1st to July 28, 20
Page 29 and 30: FINAL MATERIAL - DM CONTENT 66,7 %
Page 31 and 32: SUMMARY OF 1st AND 2nd RESEARCH PHA
Page 33 and 34: CONCLUSIONDrying of sewage sludge w

Bjoern de Haan, BACKHUS North America

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