Flow-through biomass pretreatment module with 30m3/hour throughput
WiseSoil Feedstock Pretreatment Module (FPM) is a solution for increasing efficiency of biogas plants. Module is based on a proprietary technology, and can be installed as add-on before any digester. Anaerobic Digestion technology can be compared to digestive system, where FPM acts as teeth, chewing the food before it gets to the stomach. Module is compatible with any digester system, costs up to 5% of total plant cost and provides customer’s ROI of about 1.5 — 2 years.
WiseSoil technology integrates five pre-treatment functions in a high-efficient, compact pre-treatment module that carries out 5 pre-treatment functions on feedstock and can be attached easily to biogas digester feed lines.
Module disperses feedstock into small-size fractions, minimizes disruption of the bacterial environment inside the digester by deoxygenating, mechanical hygienisation and preheating of feedstock. The combination of all these processes makes feedstock highly reactive and most favorable for the reactor microflora environment, allowing for fast & full digestion that maximizes biogas yield. WiseSoil technology competitive advantage lies in a synergy of processes: it simultaneously accelerates waste digestion & increases biogas yield.
Pretreatment effect was verified for a various types of feedstock during laboratory tests, on WiseSoil biogas unit, and during three full-scale pilots, launched on biogas plants in 2014 and 2015.
Comparison of biogas yield before and after pretreatment for grain substrate
Moreover, WiseSoil technology turns hard-to-acess substrates (i.e., manure with fibrous inclusions, straw, etc.) into an available and valuable resource for biogas plant. Comparison of biogas yield for straw before and after pretreatment:
WiseSoil pretreatment module enables owners and operators of anaerobic digestion biogas plants to:
- improve digestion speed and plant throughput;
- increase biogas yield;
- use straw, slaughter waste and other energy rich substrates without additional treatment;
- decrease substrate viscosity and plant energy consumption;
- utilize smaller reactors to reduce capital costs & the footprint;
- significantly improve plant economic efficiency.
The first pilot was performed in biogas plant in Orenburg, Russia. Pilot was launched on biogas plant, owned by a Komplesu LLC, in 21-23 September of 2014. Biogas plant UGB-25 is located at the site and has a throughput of 1.5 — 2 tons of feedstock per day. Plant uses food scraps and liquefied cow manure as a raw materials for digestion. Pilot included assessment of the efficiency of organic feedstock processing with WiseSoil pretreatment module, and a comparison of biogas yield from the UGB-25 biogas plant from initial and pretreated feedstock. The results are as follows:
- Biogas yield raised by about 80%,
- C/N ratio increased, most likely due to the activation surface of the particles of lignin and cellulose,
- Based on the test results, first preorder received.