Gas safety solutions for Sewage Treatment Plants

With the rapid development of the economy and technology, the volume of wastewater generated from domestic and industrial activities continues to rise, and wastewater treatment capacity has been correspondingly expanded. However, behind this rapid expansion, gas safety hazards have become increasingly prominent, posing an operational risk that cannot be ignored.

Accidents in wastewater treatment plants exhibit distinct seasonal patterns, with the period from May to September being the peak season for incidents. Major types of accidents include poisoning and asphyxiation, explosions, drowning, and falls, among which gas-related accidents are particularly severe.

Throughout the entire wastewater treatment process, multiple stages present gas safety risks:

Inlet channels and pipelines accumulate large amounts of volatile toxic and hazardous gases;

Decomposing sewage and sludge continuously release toxic gases such as ammonia, hydrogen sulfide, and carbon monoxide;

Process areas including screening chambers, grit removal chambers, sedimentation tanks, and sludge tanks pose poisoning risks to workers;

Sludge storage areas and poorly ventilated confined spaces are prone to the accumulation of methane and hydrogen;

Biological treatment units such as digestion tanks generate large amounts of biogas, primarily composed of methane, which is a major cause of combustion and explosion accidents.

It is important to emphasize that different process stages typically produce mixed gases. For example, stages primarily releasing hydrogen sulfide are often accompanied by carbon monoxide and methane, while stages dominated by biogas production may also contain hydrogen sulfide. This complexity of gas risks further complicates safety management.

Therefore, implementing targeted multi-gas integrated monitoring is crucial for the safe operation of wastewater treatment plants. In response to the above challenges, we recommend the use of professional gas safety detection equipment. Through comprehensive and real-time gas risk control, such equipment can effectively prevent gas-related accidents, safeguarding both personnel safety and environmental quality.