Biogas/ Anaerobic Digestion Systems
Anaerobic Digestion (AD) is a biological process in which bacterial microorganisms break down organic material in the absence of oxygen.
One of the end products is biogas, a mixture of Carbon Dioxide (CO2) Methane (CH4). Biogas can be combusted to generate electricity and heat, or can be processed into renewable natural gas and transportation fuels.
- Renewable and Sustainable
- Continuous Energy Delivery 24/7/365
- Environmentally Responsible Management of Organic Waste
- Reduction of Carbon Footprint
- Market and restaurant waste source separated organics
- Food production industry (solid waste/wastewater)
- Distilleries, bioethanol and biodiesel producers
- Livestock industries and/or agricultural production of energy crops
- Rendering and animal processing plants
- Raw or treated biosolids
- Co-digestion with biosolids
- Composition and physical/chemical characteristics of the input material
- Characteristics of the industrial production processes
- Condition of the construction site
- Costs/benefits expectations of the client
To provide optimal performance, Layne can offer a number of different digestion systems to allow the most optimized process and highest biogas production yield for each application and project scale.
CSTR- Digester System
The most common biogas system is a complete mix CSTR-Digester. The CSTR features a gas tight, vertical, cylindrical digester vessel. The mixing of its contents is provided by a centered vertical low-speed agitator which is characterized by its high circulation rate. Thus the digester content is perfectly mixed.
The CSTR-Digester technology is suitable for the treatment of higher solid materials, such as bio waste and sludge, as well as for scum developing material. Sediments can be removed easily during operation. It is especially suitable for large scale biogas plants because of construction sizes of up to 1.9 million gallons (7,500 m3).
This digester type is commonly used for the treatment of all kinds of degradable organic wastewater or sludge, animal manures, industrial and commercial organic waste streams from the food industry, restaurants, grocery stores, etc.
TYPICAL Process FlOW DIAGRAM
HEAVY CIVIL - Grand Valley State University Biogas
Grand Valley State University (GVSU) received a grant to provide an anaerobic digester system for their partner... More »
HEAVY CIVIL - Central Florida Biogas Project
Anaerobic digestion technology to turn mixed organic materials into renewable energy and natural soil amendments. More »