A Photovoltaic Project in Yibin City

The project has a treatment capacity of 3,000 m3/day and deals with wastewater from a photovoltaic enterprise. Longantai Enviro. applied its independently developed multistage catalytic oxidation technology, which not only removes residual hard-to-degrade pollutants but also enhances the biodegradability of the wastewater, reducing the load on subsequent biochemical treatment processes.

Micro-electrolysis system: With an influent chemical oxygen demand (COD) value of 9,000-12,000 mg/L and a BOD/COD ratio (B/C) between 0.05 and 0.1, the effluent B/C ratio reaches ≥0.25 after treatment with the iron-carbon micro-electrolysis process.

Fenton system: With an influent COD value of 6,000-12,000 mg/L, the Fenton process achieves a COD removal rate of ≥30%.

These technologies contribute to the ongoing implementation of energy conservation, emission reduction, and green development, while also supporting the continuous advancement of carbon neutrality goals, ensuring the photovoltaic industry maintains its rapid growth trajectory.

Wastewater Quality: This wastewater has a high concentration of organic matters and poor biodegradablility, making it particularly challenging to treat.

Influent Water Volume：1560 m3/d

Process Description: The main components include structures such as an equalization tank, emergency tank, sedimentation tank, fluoride removal reaction tank, sulfur autotrophic denitrification tank, pH adjustment tank, high-efficiency sedimentation tank, anaerobic tank, A/O biochemical tank, secondary sedimentation tank, and sludge thickening tank. Equipment includes the LEM micro-electrolysis reactor and Fenton fluidized bed. Additional facilities comprise a backwash blower room and backwash pump room, sewage treatment plant effluent discharge pipeline, emergency wastewater pipeline, reclaimed water pipeline, sludge treatment workshop, dosing room, deodorization room, and a comprehensive building.