SSA-based TVOC Concentration Control Method for Storage Equipment

The collection and storage of hazardous waste (HW) represent a critical phase in the full-process management of HW, where the control of total volatile organic compound (TVOC) concentrations in storage equipment directly impacts environmental safety and personnel health. Traditional manual control of UV lamps relies on empirical judgment, often suffering from delayed response, high energy consumption, and poor stability. To enhance the safety management of HW storage equipment and achieve precise, efficient TVOC concentration control, this study proposes an intelligent control method based on a PID algorithm optimized by the Sparrow Search Algorithm (SSA). This approach dynamically adjusts UV lamp intensity in response to fluctuations in liquid waste volatilization, maintaining TVOC levels stably below the emission standard threshold of 500 ppb. Stability tests demonstrate that the SSA-optimized PID parameters exhibit rapid convergence, achieving parameter optimization for step and sinusoidal responses within 13 and 18 iterations, respectively. Experimental results on TVOC concentration control show that the proposed method stabilizes TVOC levels within the range of 216–228 ppb within 27 minutes, with minimal sensitivity to environmental variations.