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 Puxin Biogas Digester

Puxin Biogas Digester

The Puxin Biogas Digester is a fixed dome-type medium-size biogas-digester for farms and other bio-waste producing facilities.


The Puxin Biogas Digester has been developed in China. A country with a long tradition in using the biogas technology.
For building the stomach and the neck of the digester we use a mould. This mould is filled with concrete.
This way of construction guarantees precise fitting of the gasholder on top.

Within 2 days the digester is cast. The whole plant can be built within 2 weeks.

There are 3 sizes of stomach (6 m3, 10 m3, and 14 m3) and 2 sizes of gasholders (900 litre and 1100 litre) available.
JuaNguvu offers 2 types of Puxin Biogas Digesters:
TN P standard

The standard system is a single stage biogas plant and can be operated with any kind of manure (cow, pigs, etc), solid bio waste as well as sewage.

TN P/2 biogas system:

The P/2 biogas system was developed by our engineers and is a 2-stage biogas plant. Its additional features allow the use of solid bio waste (from kitchen, food processing, vegetable markets, municipal (MSW), landscaping, etc) as feedstock.


Low tech: The installation has only one electric component: a slurry pump - no automated stirring devices, no heating systems, no electric or electronic controls/valves.
Low maintenance need: Thanks to the implementation of the hydrolysis stage there are no solid material reaching the digester. This reduces the maintenance of the digesters dramatically.
Simple operation: For normal operation there is only one manual valve to operate.

The many successful installation have proven the Puxin technology really "Fit for Africa".


The mould makes the digester easy and fast to build, thus saving money.
The use of the corrosion-free fibreglass gasholder and its unique way of mounting on the digester neck guarantees tightness.
The underground installation avoids any damage from the environment thus reducing the maintenance to an absolute minimum.
The material used and the way of construction guarantee a long lifespan and therefore an easy payback.
The Puxin Biogas Digester is a mature technology which has already been installed in Kenya many times.

There are standard appliances for the Puxin Biogas Digester:

1, 2 or 3 flame biogas cooker
Industrial cooker
Biogas lamp
Biogas water heater
Biogas generator
Installation material: fittings, pressure gauge, desulphurizer


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