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Tianraobu Village, Hengli Town, Dongguan City, Guangdong Province, 523472, China.
Views: 0 Author: Site Editor Publish Time: 2025-07-24 Origin: Site
Staff Training and Responsibilities: Operation management personnel, including operators, maintenance staff, and safety supervisors, must be thoroughly familiar with the biogas project's process flow and the operational requirements and technical specifications of facilities and equipment. They are required to undergo technical training to ensure competence.
Inspection and Documentation: Operation management personnel should conduct routine inspections of structures, equipment, electrical systems, and instrumentation according to process and management requirements. Accurate operational records must be maintained on time. Any operational anomalies should trigger appropriate measures, prompt reporting, and thorough documentation of outcomes.
Facility Cleanliness: All facilities and equipment must be kept clean to prevent leaks of water, sludge, or gas.
Comprehensive Maintenance Plan: The biogas station should have a detailed maintenance plan. Maintenance personnel must be well-acquainted with the maintenance schedules, regulations, and inspection systems for mechanical and electrical equipment at the biogas station.
Regular Cleaning: Connection pipes and open channels between structures should be regularly cleaned to ensure unobstructed flow.
Structural Inspections: Regular inspections and maintenance should be conducted on structures, including gates and valves, guardrails, ladders, pipes, supports, and cover plates.
Electrical Safety: When repairing mechanical equipment, temporary power lines should not be haphazardly connected.
Safety Equipment Checks: Safety equipment such as life jackets, lifebuoys, and firefighting facilities should be regularly inspected and replaced according to fire department regulations.
Safety Education: The biogas station must implement a systematic safety education program for new personnel and establish a safety education system. Emergency response procedures should be formulated for unexpected events such as fires, leaks of flammable and harmful gases, explosions, and natural disasters.
Fire Safety: The biogas station must strictly prohibit smoking and open flames, with clear "No Smoking" signs prominently displayed. Any hot work must follow safety protocols, with visible placement of protective and rescue facilities.
Hazard Awareness: Operation and safety supervisory personnel must be aware of the various hazards within the biogas station and the dangers associated with improper operation. Safety measures and operating procedures should be developed according to GB12801 and tailored to production characteristics.
Equipment Operation: Non-authorized personnel must not operate mechanical and electrical equipment. Motors should not be started if the power supply voltage fluctuates more than 10% above the rated voltage. All equipment must be powered down during maintenance, with a maintenance sign hung on the switch before proceeding. Cleaning moving parts while the equipment is running or allowing water to splash onto cable heads, live motor parts, or lubrication areas is strictly prohibited.
Safety Precautions: When using ladders, inspecting structures, or working near open pits and wells, personnel must exercise caution to prevent slips or falls, especially in rainy or icy conditions.
Confined Spaces: Entry into confined spaces such as anaerobic digesters, trenches, pipes, and underground wells containing toxic or harmful gases is strictly prohibited unless necessary safety measures are taken to ensure gas levels are within safe limits and to prevent oxygen deficiency.
Protective Gear: Operation management personnel should wear complete protective gear and be trained in the use of firefighting equipment.
Ventilation: Locations with toxic or harmful gases, flammable gases, odors, dust, or damp environments must be well-ventilated.
Protection of HDPE Membrane: Hard or sharp objects must not scratch, cut, or puncture the HDPE membrane.
Leak Inspection: Daily checks should be conducted on the welded areas of the HDPE membrane, connections between the membrane and anchor trenches, and junctions between the dam and pipes. Any leaks, water ingress, or blockages should be promptly addressed.
Gas Pipe Maintenance: Weekly inspections of the biogas outlet pipes for leaks or water accumulation are necessary, with prompt repairs and drainage if issues are found. The water level in the pressure relief device should be monitored and adjusted as needed.
Sludge Removal: The biogas digester should be desludged 1 to 3 times monthly, with each session lasting 10 to 30 minutes.
Periodic Overhauls: The biogas digester should undergo a comprehensive inspection every 3 to 5 years, with annual maintenance for pipes and valves.
Water Level Maintenance: The digester should avoid being empty, maintaining a water level that allows the HDPE membrane to lie flat on the water surface.
Prohibition of Hard Objects: Hard or sharp objects, such as deadwood, should not be stacked near the biogas digester to prevent unforeseen damage to the membrane. Tall trees should not be planted nearby.
Winter Precautions: In cold regions, insulation and anti-freeze measures should be taken for overflow pipes, pressure relief devices, equipment, and pipelines to prevent freezing. Adding a small amount of salt to the pressure relief device can aid in freeze prevention.
Typhoon Preparedness: During typhoons or high winds, biogas should be vented in advance to keep the membrane tight against the water surface, with attention to fire safety during venting.
Shutdown Procedures: During shutdown periods, the gas end valve should be closed, the pressure relief device valve opened, and the water level in the pressure relief device regularly monitored with manual venting as needed to prevent damage from excessive gas pressure.
Membrane Access: Personnel are strictly prohibited from walking on the membrane.
Leak Detection: Regular checks for leaks in the biogas pipeline system and equipment are necessary, with immediate cessation of operations and repairs if leaks are detected.
Pressure Management: The biogas digester must not exceed its design pressure during operation, and negative pressure must be avoided.
Restricted Entry: Non-professionals must not enter the digester for maintenance. If entry is necessary, the digester must be ventilated in advance, appropriate protective measures taken, and a safety supervisor present.
Bottom Membrane Installation: After installing the bottom membrane, any bubbles caused by groundwater must be promptly addressed, and temporary guardrails should be erected around the perimeter to prevent falls.
Top Membrane Installation: After installing the top membrane, accumulated water must be promptly removed, with attention to electrical safety during pumping. The membrane surface must not have wires laid on it, and sharp objects on pumps must not scratch the membrane.
Gas Utilization: Due to the low pressure in black membrane biogas digesters, gas purification and pressurization equipment are required for biogas utilization.
Fire Safety Zones: Anaerobic digesters should be located more than 30 meters away from open flames, with clear fire prohibition signs and firefighting facilities within this zone.
