Which of the following may lead to worker safety hazards in wastewater treatment?

In the context of wastewater treatment, all the factors listed can present significant safety hazards to workers.

Low pH levels can be corrosive and may pose risks of chemical burns or respiratory irritation if proper protective equipment is not utilized. These low pH conditions can also affect the effectiveness of treatment processes, leading to the potential release of harmful substances.

High temperatures in certain wastewater treatment processes can create thermal hazards. Workers may face risks of heat stress, scalding, or injuries from contact with hot equipment or substances.

Toxic gases, such as hydrogen sulfide or methane, are common in wastewater facilities due to the breakdown of organic materials. These gases can be harmful or even lethal in high concentrations, which makes monitoring air quality and ensuring proper ventilation crucial for worker safety.

Considering that each of these factors can independently contribute to worker hazards, recognizing that all of these issues can create a dangerous environment underscores the importance of comprehensive safety protocols in wastewater treatment facilities.