polyethylene biogas plant

8/17/2019 Polyethylene Biogas Plant

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HOW TO INSTALL A POLYETHYLENEBIOGAS PLANT

ByFrancisco X. AguilarAgronomic Engineer

MSc Sustainable Agricultural Systems The !yal Agricultural "!llege "irencester Email# $rancisc!%aguilar&r!yagc!l%ac%u'

Ph!ne# ( )) *+, -./0 10.02- 3a4# ( )) *+, -./0 10+.-5

e6r!7uce7 8ith 6ermissi!n $!r the Integrate7 Bi!9Systems Net8!r' *-- :an .++-, 7!8nl!a7 !riginal ;ersi!n *-%- than's t! the bacterialacti!n an7 absence !$ !4ygen%These $act!rs hel6 t! eliminate ba7smells an7 6ath!gens as 8ell%

A 6lastic bag> an !utg!ing bi!gas;al;e an7 a security ;al;ec!m6!se a bi!gas 6!lyethylene6lant%

Fig 1. T!e "iogas #lan$. Gam#a!a% Sri Lan&a

'. BENEFITS OF BIOGAS TE(HNI)*E

Bi!7igesters can be $e7 8ith animal an7 human e4crement% 3!r this

http://www.ias.unu.edu/proceedings/icibs/ibs/ibsnethttp://www.ias.unu.edu/proceedings/icibs/ibs/info/ecuador/install-polydig.dochttp://www.ias.unu.edu/proceedings/icibs/ibs/ibsnethttp://www.ias.unu.edu/proceedings/icibs/ibs/info/ecuador/install-polydig.doc


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reas!n> bi!gas 6lants hel6 t! 7iminish illnesses an7 re7uce the6!6ulati!n !$ insects li'e $lies an7 m!s uit!es%

Than's t! bi!gas 6r!7ucti!n> it is n! l!nger necessary t! use $ire8!!7 t!c!!'% The use !$ $ire8!!7 a$$ects the en;ir!nment because it 6r!m!testhe 7estructi!n !$ the $!rest an7 it als! causes res6irat!ry illnesses t!6e!6le 8h! c!!' 8ith it% Bi!gas als! sa;es m!ney> re6lacing electricity!r li ui7 gas as s!urces !$ energy $!r c!!'ing%

E$$luent $r!m the bi!gas 6lant can be use7 as !rganic $ertiliCer> an7 thea66licati!n !$ chemical $ertiliCers can there$!re be re7uce7% This 8ay>$armers sa;e m!ney> an7 6!lluti!n !$ the atm!s6here by chemical in6utsis a;!i7e7% The same e$$luent can be use7 in $ish 6!n7s an7 t! 6r!7ucea uatic 6lants% A uatic 6lants 6r!7uce en!ugh material t! $ee7 animalsan7D!r t! ma'e c!m6!st%+. STEPS TO INSTALL A BIO,IGESTE- FO- A -*-ALFA IL/

S$e# 10 a$erials

The rec!mmen7e7 bi!7igester length $!r a small $amily is -+ meters% T!install a bi!gas 6lant !$ this siCe> the materials liste7 bel!8 are nee7e7#

• ./ meters !$ natural 6!lyethylene 6lastic> -+++ gauges> -%0meters 8i7th%

• / use7 buc'ets * .+ L, !$ the same siCe !r . cement 6i6es> -meter length> -. inches in 7iameter • - PF" scre8 *male a7a6ter,>- inch in 7iameter • - PF" ca6 *$emale a7a6ter, - inch in 7iameter • . meters !$ trans6arent 6lastic h!se !$ - inches in 7iameter • - PF" T > - inch in 7iameter%• . 9 5+ PF" elb!8s> - inch in 7iameter • - meter !$ 6ressure PF" 6i6e> - inch in 7iameter • - $lat PF" ca6 >- inch in 7iameter • . r!un7 6lastic !r aluminum 7is's *.+9-0 centimeters in 7iameter

8ith a central h!le !$ - inch,• - trans6arent 6lastic b!ttle 9 - gall!n !$ ca6acity• 2 use7 tires aut!m!bile tubes *rubber belts,• / use7 6lastic $ertiliCer sac's• - gal;aniCe7 metallic 6i6e> J inch in 7iameter 0+ centimeters

length• - tube !$ PF" glue• - steel 8!!l• An aut!m!bile !r m!t!rcycle as s!urce !$ e4haust

• - 6lastic h!se t! ta'e e4haust $r!m the car t! the 6lace 8here the

bi!7igester 8ill be installe7


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3igure .% L!cati!n 8here the bi!gas6lant 8ill be installe7% Gam6aha 9

Sar;!7aya =istrict "enter> Sri Lan'a%

S$e# '0 Bio iges$er loca$ion

Once all the materials are !btaine7>the bi!7igester l!cati!n nee7s t! be7eci7e7% The bi!7igester sh!ul7 becl!se t! the animals> an7 it is als!rec!mmen7e7 t! c!nnect anyhuman latrines t! the bi!gas 6lant t!eliminate an!ther s!urce !$ 6!lluti!n%Lastly> the l!cati!n sh!ul7 be nearthe 'itchen 8here the bi!gas 8ill beuse7% Ne4t> 6r!cee7 t! 7ig a gra;e in thegr!un7% This gra;e is nee7e7 t!6r!tect the bi!7igester $r!m any7amage *$r!m 8il7 an7 7!mesticanimals, an7 t! hel6 t! maintain ana66r!6riate atm!s6here $!r the6r!7ucti!n !$ bi!gas%

An incline7 gutter sh!ul7 be 7ug ateach en7 !$ the gra;e% It sh!ul7 bethe same 8i7th as the cement 6i6es%

It is necessary that the $l!!r !$ thegra;e is in n! 8ay sl!6e7> !r else>

the system 8ill n!t 8!r'% Als!> the8alls sh!ul7 be t!tally $lat an7 $ree!$ st!nes !r r!!ts that can brea' thebag% =imensi!ns $!r the gra;e are as$!ll!8s#


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Figure 2. ,e$ails o3 $!e ug $!a$ s!oul "e ug a$ eac! en o3 $!e gra4e. Source. Bo$ero et al., 1555.

Fig. 6. Pre#aring $!e #las$ic "ag. A #erson #ulls one #las$ic "ag $!orug! $!e o$!er.

S$e# +0 Pre#aring $!e #las$ic "ag

E4ten7 the ./ m 6lastic bag !n a $lat$l!!r that 7!es n!t ha;e any st!nesthat can brea' it% It is better i$ this6r!cess is carrie7 !ut in a hall r!!m!$ the c!mmunity centre% Then> $!l7the 6lastic in hal$ an7 cut it in t8! -)meters 6ieces%

Ne4t> a 6ers!n *8ith n! belt> rings !ranything that might brea' the bag,intr!7uces the sec!n7 bag int! the$irst !ne by 6ulling it thr!ugh the -)m length !$ the bag% When thesec!n7 bag has been 6ulle7thr!ugh> the system is n!8 a 7!ublebag> -) meters in lenght% N!8> thebag is rea7y an7 sh!ul7 be $!l7e7an7 st!re7 in a sa$e 6lace until the7ay !$ installati!n%


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Fig 7. Se8uence o3 $!e ins$alla$ion o3 $!e ou$going "iogas4al4e.

S$e# 20 Ou$going "iogas 4al4e

3!ur meters $r!m !ne en7 !$ the7!uble bag *nearest t! the 'itchen,>ma'e a small cut *Kinch, t! intr!7ucethe - inch PF" scre8% Bet8een thescre8 an7 the 7!uble bag> 6lace a6lastic 7is' an7 a rubber 7is' *6iece !$ use7 tire,% Then> !utsi7e the 7!ublebag> 6lace an!ther rubber 7is'> then a6lastic 7is' an7 the PF" a7a6ter%

Ne4t> 6lace a -+ cm PF" tube> thePF" elb!8 an7 the sec!n7 - inchPF" tube% 3inally> 6lace the 6lasticbag 8ith the !utging ;al;e in the gra;ean7 6ass the t8! en7s !$ the 7!ublebag thr!ugh the - meter cement tubes%Instea7 !$ cement tubes> y!u can use6lastic buc'ets% em!;e the b!tt!ms!$ three buc'ets an7 c!nnect themt!gether t! ma'e a 6i6e% % Y!u 8illnee7 ) buc'ets at each en7 */ buc'etst!tal,%

S$e# 60 Securi$y 4al4e

Ne4t> thesecuri$y 4al4e sh!ul7 be 6lace7 acc!r7ing t! the $!ll!8ing#

Figure 9. ,iagram o3 $!e securi$y 4al4e.3igure /% The security ;al;e is tie7 t! a 8!!7en 6!st%

ATTENTION# Ma'e sure the': cm P;( $u"e > is no$ glue $o $!e


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E;ery si= mon$!s > the Steel 8!!l nee s $o "e c!ange > 8ith!ut7ismantling the rest !$ the system%

Insert the ;al;e int! a trans6arent 6lastic b!ttle> $ull !$ 8ater> an7 tie it t!a 8!!7en 6!st *ne4t t! the e4it ;al;e,% Ma'e small h!les in the 6lasticb!ttle t! ensure that the .+ cm PF" 6i6e is /9-+ cm un7er the 8aterle;el%

3inally> the !utg!ing bi!gas an7 security ;al;es are c!nnecte7 thr!ughthe trans6arent 6lastic h!se%

S$e# 70 Fill u# $!e "iogas #lan$ >i$! e=!aus$ an >a$er

Tie !ne en7 !$ the 7!uble bag 8ith rubber belts> an7 insert a h!se int!the !ther en7% "!nnect this h!se t! the e4haust 6i6e !$ a car> ma'ingsure it is 8ell attache7% Start the engine> an7 let it run until the bag is $ull%When the !utg!ing bi!gas ;al;e starts t! bubble> that in7icates that thebi!7igester is at its ma4imum ca6acity%

Figure 5. (onnec$ing a !ose $o $!e e=!aus$ #i#eo3 a car% in or er $o 3ill $!e #las$ic "ag >i$!e=!aus$.

Ne4t> thr!ugh the same h!se> $ill the bi!7igester8ith 8ater> until it reaches the le;el !$ thebuc'ets> an7 the gas can n! l!nger esca6e% Thisis a critical ste6> because i$ it is n!t carrie7 !utc!rrectly> the bell 8here the bi!gas 8ill be st!re78ill n!t $!rm%

3igure -+% Ph!t! !$ a bi!gas 6lant> $ille7 8ith e4haust an78ater%


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3igure --% =iagram !$ a bi!gas 6lant> $ull !$ e4haust an7 8ater% Water re6resents bu$$al!es> g!ats> 6igs>etc%, blen7e7 8ith 5+ 'il!s !$ 8ater%This is a66r!4imately a mi4ture !$ -buc'et !$ e4crement 8ith $i;ebuc'ets !$ 8ater% This mi4ture isnee7e7 t! re6lace the 8ater l!st7uring the 6r!cess an7 'ee6 a$l!8ing material insi7e thebi!7igester%

YO@ SHO@L=NE;E- "HA GE THEBIOGAS PLANT WITH(HI(?EN

AN*-E % This is n!t a66r!6iate $!r bi!gas6r!7ucti!n%


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Figure 1+. T!e "iogas #lan$ s!ou "e 3e e4ery ay >i$! 3res! manure. anure is "len e >i$! >a$er @106 an $!en $!roug! $o $!e"io iges$er.

S$e# 0 Pro$ec$ion o3 $!e"io iges$er an use o3organic 3er$iliCer

In !r7er t! 6r!tect the6lastic bag $r!m sunlightan7 animals> a r!!$ an7 a$ence sh!ul7 be built% This8ill e4ten7 the li$e !$ the

bi!gas 6lant *-+ years =ig a h!le ne4t t! the en7!$ the bi!gas 6lant t!c!llect the e$$luent 8hichcan be use7 as $ertiliCer*see $igure,% This $ertiliCercan be utiliCe7 $!r!rchar7s !r t! 6r!7ucea uatic 6lants $!r animalc!nsum6ti!n !r

c!m6!sting> as 8ell as in6!n7s $!r bree7ing $ishes%

3ig -)% The e$$luents $r!mthe bi!7igester can beuse7 7irectly as !rganic$ertiliCer !r t! 6r!7ucea uatic 6lants> that thencan be use7 t! $ee7 6igs!r 6r!7uce c!m6!st%

S$e# 50 Ins$all $!e "urner


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2+ 7ays a$ter the installati!n !$ the bi!gas 6lant> rem!;e the PF" ca6$r!m the security ;al;e an7 c!nnect the en7 !$ the PF" 6i6e t! theburner% All c!nnecti!ns sh!ul7 be ma7e 8ith 6lastic !r PF" 6i6e>because the bi!gas is c!rr!si;e% Only the 6i6e that 8ill be use7 t! burnthe bi!gas is gal;aniCe7 ir!n%

Figure 16. Biogas is "roug!$ $o $!e &i$c!en using P;( connec$ions% ue $o i$s corrosi4e ac$ion. Only $!e las$$u"e is a iron gal4aniCe #i#e. A "iogas #lan$ can #ro uce enoug! 3uel $o 3ul3ill $!e re8uiremen$s o3 a rural

3amily.

Thr!ugh the a66licati!n !$ bi!gas techn!l!gy the uality !$ li$e can beim6r!;e7> sa;e m!ney an7 increase 6r!7ucti;ity !$ the $arm an7 thesame time> 8hile 6r!tecting !ur natural res!urces% This sim6le an7chea6 techn!l!gy can be a66lie7 e;ery8here in the Tr!6ics%

)% E3E EN"ES

BOTE O> % AG@ILA > 3% P ESTON> T% -555% The bi!7igester% InT!8ar7 a better use !$ !ur natural res!urces% EA TH> Gu cim!> "% % ./6%

BOTE O> % AG@ILA > 3% ?% 3E N N=E > :% @ > P% -55 Gu cim!> "% % Pr!gram !$ "!mmunity =e;el!6ment Q;i7e!cassetteR -1 min%

BOTE O> % P ESTON> T% % -5/< L!89c!st bi!7igester $!r 6r!7ucti!n!$ $uel an7 $ertiliCer $r!m manure % "ali> "!l!mbia% 2+ 6%

=E@ST"HE GESELLS"HA3T 3 TE"HNIS"HE@SAMME NA BEIT% -55/ Bi!gas Basics% In$!rmati!n an7 A7;is!ry

Ser;ice !n A66r!6iate Techn!l!gy> Eschb!rn> Germany%htt6#DDgate%gtC%7eDbi!gasDbasicsDbasics%htmU%

3AO V *"IPAF, 3@N=A"I N "ENT O PA A LA INFESTIGA"I N ENSISTEMAS SOSTENIBLES =E P O=@""I N AG OPE"@A IA%-550% Plastic bi!7igester generat!r !$ bi!gas an7 !rganic $ertiliCer% "ali>

http://gate.gtz.de/biogas/basics/basics.htmhttp://gate.gtz.de/biogas/basics/basics.htm


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"!l!mbia% -/ 6%

P ESTON> T% % O= IG@E > L%:% -555% Manual $!r the installati!n !$l!8 c!st bi!7igester% 3un7aciXn @ni;ersi7a7 6ara la Agricultura Tr!6ical%Fietnam% "79r!m

LIVESTOCK-BIOGAS-CROP BIO-SYSTEM IN SAMOA

by Takasi Yanagida

Nuu Cro !"#"$o %"n& S&a&ion' Minis&ry o( Agri)u$&ur"' *is+"ri"s' *or"s&s and M"&"oro$ogy'A ia' Sa%oa,

P+o&os (ro% a a "r r"s"n&"d a& &+" S"%inar- orks+o on Bio$ogi)a$ .&i$isa&ion and Manag"%"n& o( as&"s

(or Sus&ainab$" !"#"$o %"n& in Sa%oa/ T+" In&"gra&"d Bio-Sys&"%s A roa)+ 012-13 4un" 15556

A 4a an O#"rs"as Vo$un&""r Coo "ra&ion Pro7")& a& A$"sia


11/12

This is a "plug flow" digester, normally placed in a trench (but I wanted a portable version to sit ona concrete floor). The gas outlet is not yet fitted, we were testing the container.


12/12

Another small plug flow digester has been set up running on piggery waste.

More information can be obtained from the cological !arm in ietnam.

#eturn to the $#%& 'T page.#eturn to the eginners Tour of iogas
http://www.hcm.fpt.vn/inet/~ecofarm/Biodiges.htmhttp://www.hcm.fpt.vn/inet/~ecofarm/Biodiges.htmhttp://www.ees.adelaide.edu.au/pharris/biogas/project.htmlhttp://www.ees.adelaide.edu.au/pharris/biogas/beginners.htmlhttp://www.hcm.fpt.vn/inet/~ecofarm/Biodiges.htmhttp://www.ees.adelaide.edu.au/pharris/biogas/project.htmlhttp://www.ees.adelaide.edu.au/pharris/biogas/beginners.html

polyethylene biogas plant

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