Biological processing Mechanical biological treatment

-



twin stage & uasb anaerobic digesters


the biological element refers either:



anaerobic digestion
composting
biodrying

anaerobic digestion harnesses anaerobic microorganisms break down biodegradable component of waste produce biogas , soil improver. biogas can used generate electricity , heat.


biological can refer composting stage. here organic component broken down naturally occurring aerobic microorganisms. breakdown waste carbon dioxide , compost. there no green energy produced systems employing composting treatment biodegradable waste.


in case of biodrying, waste material undergoes period of rapid heating through action of aerobic microbes. during partial composting stage heat generated microbes result in rapid drying of waste. these systems configured produce refuse-derived fuel dry, light material advantageous later transport , combustion.


some systems incorporate both anaerobic digestion , composting. may either take form of full anaerobic digestion phase, followed maturation (composting) of digestate. alternatively partial anaerobic digestion phase can induced on water percolated through raw waste, dissolving readily available sugars, remaining material being sent windrow composting facility.


by processing biodegradable waste either anaerobic digestion or composting mbt technologies reduce contribution of greenhouse gases global warming.


usable wastes system:



municipal solid waste
commercial , industrial waste
sewage sludge

possible products of system:



renewable fuel (biogas) leading renewable power
recovered recycable materials such metals, paper, plastics, glass etc.
digestate - organic fertiliser , soil improver
carbon credits – additional revenues
high calorific fraction refuse derived fuel - renewable fuel content dependent upon biological component
residual unusable materials prepared final safe treatment (e.g. incineration or gasification) and/or landfill

further advantages:



small fraction of inert residual waste
reduction of waste volume deposited @ least half (density > 1.3 t/m³), lifetime of landfill @ least twice long usually
utilisation of leachate in process
landfill gas not problematic biological component of waste has been stabilised
daily covering of landfill not necessary






Comments

Post a Comment

Popular posts from this blog

Discography Ole Paus

-
1 discography 1.1 albums 1.2 songs 1.3 opera discography albums (for peak charting positions, see norwegiancharts.com) der ute - der inne (1970) garman (1972) blues pyttsan jespersens pårørende (1973) ole bull show (with gunnar bull gundersen) (1973) zarepta (1974) lise madsen, moses og de andre (with ketil bjørnstad) (1975) i anstendighetens navn (1976) paus-posten (1977) nye paus-posten (1977) sjikaner utvalg (1978) kjellersanger (1979) noen der oppe (1982) bjørnstad/paus/hamsun (with ketil bjørnstad) (1982) svarte ringer (1982) grensevakt (1984) muggen manna (1986) stjerner rennesteinen (1989) salmer på veien hjem (with kari bremnes og mari boine)(1991) biggles testamente (1992) mitt lille land (1994) hva hjertet ser (1995) stopp pressen! det grøvste fra paus-posten (1995) to rustne herrer (with jonas fjeld) (1996) pausposten extra! (1996) det begynner å bli et liv(1998) damebesøk (with jonas fjeld) (1998) den velsignede (2000) kildens bredd (with ketil bjørnstad) (2002) tolv rustn
Read more

Gaeta class Lerici-class minehunter

-
gaeta (foreground) , numana depending on source, gaeta class ships considered either lerici subclass, or separate class of ships. the 8 ships of second series lerici class, more commonly known gaeta class, launched in 1990s, , commissioned may 1996. gaeta class identical lerici class: main structural differences between ships displacement of latter 77 tons greater, hull 2.5 metres (8.2 ft) longer, , communications mast moved above bridge forward of exhaust funnel. gaetas used improved version of vds fiar sqq-14 (it) sonar, fitted in 1991 4 lerici class ships. rov gaymarine pluto , gaymarine pluto gigas. navigation radar gem elettronica spn-753 replaced (v)9 arpa version (i band).cms evolved version (combat management system) datamat ssn-714(v)3ul. on board 1 larger hyperbaric chamber (8 seats). gaeta mlu in 2010 intermarine began mlu (mid-life update), expected complete in 2018. new sonar thales 2093 mk2, new cms (combat management system) selex es ssn-714(v)4, new containerized , remo
Read more

Driver.27s licenses used for identification purposes Driver's license

-
1 driver s licenses used identification purposes 1.1 europe 1.2 asia 1.2.1 japan 1.3 north america 1.4 south america driver s licenses used identification purposes many countries, including australia, new zealand, canada, united kingdom, , united states, have no national identification cards. many people have driver s licenses, accepted de facto proof of identity. identity cards , driver s licenses credit card size—the id-1 size , shape defined in iso/iec 7810. europe many european countries require drivers produce license on demand when driving. european countries require adults carry proof of identity @ times, driving license not valid identification in every european country. in united kingdom drivers not required carry licence. driver may required constable or vehicle examiner produce licence, may provide in specified police station within 7 days; police issue form purpose. in denmark, finland, norway, spain , sweden, driver s license number same citizen s id number. banks , auth
Read more