MethodCompostFast FermentionBiogasComposting-free
MechanismMicrobes decompositionMicrobes decompositionAnaerobic bacteria decompositionEnzyme reaction
Time3~18 Months1~3 Days + 30~60 Days15~30 Days3~24 Hours
Space100 m2/ton20 m2/ton + 50 m2/ton50 m2/ton5 m2/ton
Construction$50,000~$60,000/ton$25,000~$50,000/ton$100,000~$200,000/ton$35000~$50,000/ton
Treatment Cost$30~$50/ton$30~50/ton$30~50/ton$25~$40/ton
End ProductSoil ConditionerSoil ConditionerCH4HQ organic fertilizer
Product Value$5/ton treated$5/ton treated$20/ton treated$120/ton treated
Re-Processing RequiredHigh BOD wastewater& Bad SmellHigh BOD wastewaterOrganic sludge(~40%)N/A
Re-Processing Cost$5~$10/ton treated$5~$10/ton treated$15~$30/ton treatedN/A
Air PollutionCO2、Bad SmellCO2、Bad SmellGreenhouse gas emissionsLow Carbon emission
Water PollutionHigh BOD wastewaterHigh BOD wastewaterWastewater with sludgeClean water
AdvantagesReduce the volumeReduce the volumeGenerate energyFast, Pollution-free
DisadvantagesTime & SpaceExtra Storage RequiredRe-processing for sludgeN/A
ProcessManual or Half-AutomaticHalf-AutomaticHalf-AutomaticFull Automatic
LimitationsHigh lignin content,Hgh fiber contentHard organic matter,High oil or salt contentHigh oil or salt contentN/A
LifetimeLess than 5 years5 years5 yearsMore than 10 years
EnvironmentBreed mosquitoes and odorBreed mosquitoesDepends on equipmentsTotally No Pollution