Peter Malmros

INNEHÅLLSFÖRTECKNING
1 INLEDNING ............................................................................................................. 1
1.1 BIOGAS OCH KUNGSÄNGENS GÅRD ........................................................ 1
1.2 SYFTE ............................................................................................................... 2
2 TEORI OCH BAKGRUND ...................................................................................... 3
2.1 BIOGASHISTORIK .......................................................................................... 3
2.2 SUBSTRAT FÖR BIOGASPRODUKTION .................................................... 3
2.2.1 Hygienisering och sönderdelning ............................................................... 6
2.2.2 Sveriges biogaspotential ............................................................................. 7
2.3 RÖTREST .......................................................................................................... 7
2.4 NEDBRYTNING AV ORGANISKT MATERIAL .......................................... 8
2.4.1 Anaerob nedbrytning .................................................................................. 9
2.4.2 Aerob nedbrytning .................................................................................... 10
2.5 RÖTNINGSTEKNIKER OCH DEFINITIONER ........................................... 11
2.5.1 Psykrofil, mesofil eller termofil ............................................................... 11
2.5.2 Kontinuerlig- eller satsvis rötning ............................................................ 11
2.5.3 Totalomblandad eller pluggflöde.............................................................. 12
2.5.4 Våtrötning ................................................................................................. 12
2.5.5 Torrötning ................................................................................................. 13
2.5.6 Uppehållstid .............................................................................................. 14
2.5.7 Utrötningsgrad .......................................................................................... 14
2.5.8 Belastning ................................................................................................. 15
2.6 PROCESSBESKRIVNING KUNGSÄNGENS GÅRD .................................. 15
2.6.1 Förbehandling av inkommande material .................................................. 15
2.6.2 Materialflöden i anläggningen .................................................................. 15
3 MATERIAL OCH METODER .............................................................................. 18
3.1 UTRÖTNINGSFÖRSÖK ................................................................................ 18
3.1.1 Utförande .................................................................................................. 18
3.1.2 Utrötningsförsök 1 .................................................................................... 20
3.1.3 Utrötningsförsök 2 .................................................................................... 20
3.2 PROVTAGNING OCH ANALYSER ............................................................. 21
3.2.1 Provpunkter .............................................................................................. 21
3.2.2 Provtagning ............................................................................................... 22
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