PUXIN Biogas Plant
4, 6 and 10 m3 family-size
(1) Introduction of PUXIN Biogas Plant
technology
 To renovate the traditional fixed dome biogas
plant, Shenzhen Puxin Science& Technology
Co., Ltd, through many year’s study developed
a new generational hydraulic biogas Plant-the
PUXIN Biogas Plant that has carried on almost
all the advantages of the traditional fixed dome
biogas plant, and overcome its main
disadvantages.
 By the end of 2012, PUXIN biogas plant has
been extended to over 50 countries.
6m3 PUXIN biogas system
10m3 PUXIN biogas system
Family size PUXIN biogas plants built in Kenya
Family size PUXIN biogas plants built in Ghana
Family size PUXIN biogas plants in construction Spain
Family size PUXIN biogas plants in construction
in South Africa
A. The structure:
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PUXIN Biogas Plant is mainly composed of a concrete digester and a glass
fibre reinforced plastic gas-holder.
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The digester is 2.4m deep, 2.8m in diameter and 6m3 of capacity. The
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gas-holder is 1.6 m in diameter, 0.6 m high and 1 m3 of capacity
B. Main advantages
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Comparing with the fixed dome biogas
plant, the PUXIN biogas plant has the
following distinct advantages:
Easy and quick to be built
High gas production rate
Easy to maintain
Durable
1. Easy and quick to be built
 Any working mason through one day’s
study is able to build the PUXIN Biogas
Plant with 100% success rate.
 The construction of a PUXIN Biogas
Plant can be completed within 48 hours.
The process to build PUXIN biogas plant
1.Dig a hole in the grand
3.Assemble the vault mould
2. Cast the basement and
assemble the stomach mould
4.Cast the digester stomach
5.Assemble the neck mould.
7.disassemble the neck mould.
6.Cast the digester neck
8.disassemble the vault
and stomach mould
9.Build the inlet and outlet
10.Install the gas holder
11.Install the gas pipe system and the appliances
Contrast of the technical requirements for the builders
Traditional fixed dome biogas plant
PUXIN Biogas plant
Airtight craft
Highly required
Not required
Ability to understand
blueprints
Highly required（build by hand depending
on the blueprints）
Not required (cast by
mould)
Ability to build the
arch
Highly required (build by hand)
Not required (cast by
mould)
To judge and deal
with gas leaking
Highly required.
Lowly required.
To judge and deal
with water
leaking
Highly required.
Required.
Training period
About 3 month
1-5 days
Period to become a
proficient
builder
1－2 years
About one month
Requirement of the
people to be
trained
Medium educated, strong ability to master
skills
Not Educated， medium
ability to master
skills
Success rate
Not 100％ guaranteed
100％ guaranteed
Items
Contrast of the construction period
Item
Traditional fixed
dome biogas
plant
PUXIN Biogas plant
Construction of the 4 days
concrete digester
2 days
Airtight working
procedure
10 days
0 days ( not required)
The airtight test
working procedure
4 days
0 days (notrequired)
Total
18 days
2 days
2. High gas production rate
 It has been proved that the gas production
rate of PUXIN biogas plant is over 50%
higher than that of the traditional fixed dome
biogas plant in average under the same
conditions.
 In TIMOR LESTE a 10m3 PUXIN biogas
plant with three 1.2m3 gasholders can
produce enough gas for three families.
The president of TIMOR LESTE is visiting a
PUXIN biogas plant built in TIMOR LESTE
3. Easy to maintain
The leak of the gas-holder can be found immediately, and can be repaired
on ground
Contrast of the maintenance
Traditional fixed dome
biogas plant
PUXIN Biogas plant
To mend the gas leak of
gas-holder
Dangerous and difficult
The job is done inside
the biogas digester,
there is a possibility
of poisoning.
The leak can not be
found.
Safe and easy
The job is done on ground, there is
no possibility of poisoning.
The leak can be seen, and can
be mended directly.
To mend the water leak
of the digester
Dangerous
The digester’ outlet is
too small that the air
circulation in the
digester is bad. So,
there is a possibility
of poisoning.
Safe
The digester’s outlet is large
enough that the air circulation
in the digester is good. So,
there is no possibility of
poisoning.
Items
4. Durable
 The concrete digester can last over thirty
years. The glass fibre reinforced plastic
gas-holder can last over ten years. When
the gas-holder is worn-out, a new one
can replace. So the PUXIN biogas plant
can last over thirty years.
(2) Cost analyze of a 6m3 PUXIN biogas plant
(the earth work is not included)
Material (manpower)
quantity
Glass fibre reinforced
plastic Gasholder
1
Smashed stone
2.4 m3
Sand
2.0 m3
cement
850 kg
Brick
（60×120×240mm）
100
Plastic pipe
（Φ150×1800mm)
2
concrete bar (Φ6)
8kg
manpower
6 man day in total:
4 man×1 day (install the
mould and cast)+2 man×1
day (disassemble the
mould, build inlet, outlet
and install pipe and
appliances)
Total price
Unit price
(USD)
Price
(USD)
Products related to PUXIN family
size biogas system
 Steel mould
 Glass fibre reinforced plastic gas-holder
 Biogas appliances
1. Steel mould
The 10m3 steel mould can build 4, 6 and 10m3 PUXIN family size biogas plants.
2. The gas-holder
 This product is one of the main components of
PUXIN Biogas Plants.
 On the top of the gas –holder there is a valve
that can eliminate the atmospheric pressure.
 When there is a need to replace solid
fermentation material like straw in the digester
or to repair the digester, the gas-holder can be
taken out from the digester easily.
Gas-holder
3. Biogas appliances
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biogas stove
biogas water heater
biogas rice cooker
Biogas lamp
Biogas pipe & fittings
Biogas generator
Biogas stove (double burners)
Biogas water heater (7L)
Biogas rice cooker (2L)
Biogas lamp
Biogas pipe & fittings
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biogas pressure age
biogas desulfurizer
biogas pipe fittings
biogas pipe
biogas flow meter
Biogas generator (1-5kw)
(4) References
1. East Timor
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In East Timor the biogas system composed of 10m3 Puxin family size biogas plant and two
extra gasholders is a very popular biogas system that provide enough biogas for three families
for their daily cooking and water boiling.
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Contact:
Mr. Aries Eddie de Almeida
Phone: +670-7242748
E-mail: dalmukelect@gmail.com
2. Ghana
Many biogas systems composed of numbers of 10m3 PUXIN biogas plant are built for schools and
hotels to treat the sewage water and food waste.
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Contact
BETA CONSTRUCTION ENGINEERS LIMITED
P. O. BOX K.I.A. 9329 ACCRA- GHANA
Contact person: Mr. Kofi Ahenkorah
Phone: 233-21-404186, 233-24-6865689/4239539
FAX: 233-21-404186
E-MAIL: betaconst@yahoo.com
3.Nicaragua
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Puxin biogas system built in Polytechnic University of Nicaragua to treat the food waste, the biogas for
cooking.
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A 50M3 Puxin biogas systems built in Juigalpa Nicaragua to treat the slaughterhouse waste, The biogas
used in a water heater using in slaughter pigs process, the Project support by UNIDO.
Contact
Polytechnic University of Nicaragua
Contact person: Dr. Roberto A. González
Phone: 2249-4529, Fax 2249-9232
E-mail: roberto.gonzalez@upoli.edu.ni roberto_glezc@yahoo.es robertoglezc@tmail.com
4.Kenya
Puxin biogas system built in Kenya
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Contact
Kenya Puxin Renewable Energy Co. Ltd.
Nairobi office: Veteran hse, 8th floor, suite 807. Along moi avenue.
Branch office: Jopa hse, suite 2. P.O BOX 1051, 20300. Nyahururu.
Contact person: Ms. Martha kagiri
Phone: +254727980192, Mobile: +254703632974
E-mail: marthapleijel@yahoo.se marthapuxin@gmail.com kenyapuxin07@yahoo.com
http://www.puxinbiogaskenya.kbo.co.ke
5.South Africa
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Puxin biogas system built in South Africa
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Biogas SA
PO Box 864 Muldersdrift Johannesburg 1747 South Africa
Contact person: Mark Tiepelt
Phone: +27 72 445 4739
http://www.biogassa.co.za
6. Israel
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Puxin biogas system built in Israel
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Contact
Ecogas Israel
Derech hayam 10, Michmoret, Israel, 40297
Contact person: Oshik Efrati
Phone: +972-(0)52-3221554 Fax: +972-(0)57-9557509
E-Mail: oshik@ecogas.co.il
http://www.ecogas.co.il
7. Senegal
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Puxin biogas system built in Senegal
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Contact
BIOECO
St. Louis 221, Senegal
Contact person: Christophe Chesneau
Phone: +221-773381210
E-mail: c_chesneau@yahoo.fr
8.WFP
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400 sets of PUXIN family size (10m3) biogas plants were purchased by WFP for Sudan in
2011.
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Contact:
Hamed Adlan, Procurement Unit, WFP Khartoum, Sudan
Email: Hamed.Adlan@wfp.org, tele: +249912153007
Firas Dabbagh, Procurement Officer, WFP-Sudan RO, VSAT: 2231
Email: Firas.Dabbagh@wfp.org , tele: +249 9121 77319
Mr. Amit Kumar Singh , Programme Officer , United Nations World Food Programme
North Darfur Area Office, North Darfur,Sudan , Mobile- 00249 912317841
Email: Amit.Singh@wfp.org
9. UNIDO
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2 family size biogas system formed by 2 sets of 10m3 biogas plant and 2 extra gas holders
were purchased by UNIDO for Armenia in 2012
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Contact :
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Dr. Victor Afyan, Apt.16,Charents, Block,15, Avan, Yerevan, 0060, Armenia
Email: vafyan@contact-a.am
Tel: (374)-98-411-453
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Ms. Gillian OCAMPO-GOETZLINGER<G.Ocampo-Goetzlinger@unido.org>;
'DRAECK, Mark'<M.Draeck@unido.org>;
ORLOV, Alexander<A.Orlov@unido.org>;
SIMONYAN, Anahit<A.Simonyan@unido.org>;
Contact us
If you have the interest please contact:
 Shenzhen Puxin Technology Co.Ltd
Add: 2nd floor, Bldg 4, 49 Jiaoyu North Rd, Gaoqiao
District, Pingdi Street, Longgang, Shenzhen, P. R.
China
 Postal Code: 518117
 Tel: 86-755-28938251 86-755-28938252
Fax: 86-755-89323983
E-mail: JW@puxintech.com
 Website: www.puxintech.com
Thanks!