Gobardhan Technical Manual 2022

The Manual for GOBARDHAN 2022 provides technical and operational guidance for biogas-based management of rural biodegradable waste. It explains the GOBARDHAN approach and describes biogas generation through anaerobic digestion, including plant components, process stages and important operating parameters such as temperature, pH, moisture, carbon-to-nitrogen ratio, organic loading and hydraulic retention time. The manual presents different biogas plant design options, including flexi, fixed-dome and floating-drum plants, and discusses digester sizing. It also covers applications such as cooking, heating, electricity generation and compressed biogas. Bio-slurry and its nutrient value are discussed as resource-recovery outputs. A substantial section addresses operation and maintenance, technical skills, feeding practices, general checks, gas leakage, operational problems, maintenance, safety measures and do's and don'ts. Case studies and indicative figures for Deenbandhu, PAU Janta and KVIC models provide additional practical reference for implementing agencies, Gram Panchayats and users.