Adopting (PFR) process, nearly medium temperature fermentation, using equipment interference to avoid scum crusting, improve the efficiency of biogas production. The biogas is transfered by pipe network to users, at the same time biogas slurry and biogas residue are discharged into the biogas slurry pool for further use of making bio-organic fertilizer. The specific process as shown in the figure below: 

Technology description:

Collecting waste in proportion to input the inlet, feed material concentration reached to 8%. You could also improve the concentration of raw material to make the dry fermentation. The bio-gas will be produced in PFR anaeroic digestor. After purify, the bio-gas could use for farmers living fuel. Through the heat exchanger to heat the fermented liq by boiler, to make sure enough heat in winter. Using the forced reflux pump and breaking stirrer Mix the material to improve the efficiency of fermentation and gas production. Biogas residue and biogas slurry are expeled from PFR anaeroic digestor and transferred into liquid storage tank. As a high quality organic fertilizer use for farmland, vegetables and fruit. To improve the quality of agricultural products, achieve zero emission standards.

Technics unit:

Mainly include: (1). Feed mixing pool; (2). Feeding port; (3). PFR anaerobic pool;(4)Discharge port for material; (5). Biogas slurry storage pool; (6). Gas tank; (7). Boiler room;( 8). Cleaning room.