Photovoltaic booster station sewage treatment device

Photovoltaic booster station sewage treatment device

Photovoltaic booster station sewage treatment deviceIt is an integrated equipment specifically designed to treat domestic sewage, oily sewage, and photovoltaic module cleaning wastewater in photovoltaic power plants. Its core function is to purify wastewater to meet green irrigation standards and achieve water resource recycling. ‌

This device treats wastewater through a three-level process:

Pre treatment: Use a grid to intercept large particle impurities, adjust the balance of water in the tank, and separate oily wastewater in the oil separation tank. ‌

Biological treatment: using AO process (anaerobic aerobic) or MBR membrane technology to degrade organic matter through microorganisms. ‌

Deep processing: Combining quartz sand filtration, activated carbon adsorption, and ultraviolet disinfection to remove residual pollutants and inactivate pathogens. ‌

Operation method of photovoltaic booster station sewage treatment equipment:

Wastewater collection and pretreatment

Grille interception: The sewage enters the grid well with good quality. The coarse grid intercepts large floating objects (with a gap of 5-20mm), and the fine grid removes suspended objects (with a gap of 1-5mm) to prevent subsequent equipment blockage. ‌

Sedimentation treatment: Remove sediment with a particle size of ≥ 0.2mm through a horizontal or swirling sedimentation tank, with a hydraulic retention time of 1-3 minutes. ‌

Oil separation treatment (oily wastewater): The inclined plate oil separation tank separates floating oil, with a residence time of 30-60 minutes and a removal efficiency of 70% -80%. ‌

Biological treatment

A/O process or MBR membrane bioreactor:

Wastewater enters the anaerobic tank (hydrolysis and acidification to remove some COD), and then enters the aerobic tank (microbial degradation of organic matter and ammonia nitrogen).

The MBR process achieves efficient solid-liquid separation through membrane separation, with high sludge concentration and treatment efficiency increased by more than 30% compared to traditional processes. ‌

Deep processing and disinfection

Disinfection: UV disinfection or sodium hypochlorite addition is used to kill pathogenic bacteria. ‌

Activated carbon adsorption or sand filtration (optional): further remove trace organic matter, color, and odor. ‌

sludge treatment

The residual sludge generated by MBR process is concentrated in the sludge concentration tank, dehydrated by plate and frame filter press, and the sludge cake is transported for disposal. ‌

Core components of photovoltaic booster station sewage treatment equipment:

Preprocessing system

Grille: A combination of coarse/fine grilles is used to intercept large particle impurities (gaps of 5-10mm and 1-3mm). ‌

Regulating tank: Balancing water quality and quantity to provide stable inflow for subsequent treatment. ‌

Oil separation tank (oily wastewater treatment): Remove 70% -80% of floating oil through inclined plate separation. ‌

Biological processing core

MBR membrane bioreactor: integrating anaerobic tank (hydrolysis acidification), aerobic tank (biodegradation) and membrane separation technology, with a sludge concentration of 30% and effluent SS close to 0. ‌

A/O process (anaerobic aerobic): efficiently degrades organic matter, increases nitrogen and phosphorus removal efficiency by 30%. ‌

Deep processing system

Disinfection system: UV disinfection or sodium hypochlorite addition to kill pathogens. ‌

Activated carbon adsorption: removes trace organic matter, color, and odor. ‌

Automated control system

Fully automatic operation, 24-hour monitoring of COD, ammonia nitrogen and other parameters and automatic adjustment. ‌

The remote monitoring platform supports cloud management, enabling fault warning and parameter adjustment. ‌

Process comparison of wastewater treatment equipment in photovoltaic booster stations:

AO/O process (anaerobic aerobic process)

Treatment process: The sewage is well treated and enters the anaerobic tank (for degrading large molecular organic matter), then enters the aerobic tank (for microbial degradation of residual organic matter and denitrification), and the effluent is filtered and disinfected through sedimentation. ‌

Applicability: Suitable for treating low concentration organic wastewater such as oily wastewater and domestic sewage. The removal rate of COD and ammonia nitrogen can reach 85% -90%, but it needs to be coordinated with a regulating tank to balance the water volume. ‌

MBR process (membrane bioreactor)

Treatment process: After passing through anaerobic and aerobic tanks, sewage is separated into sludge and water through ultrafiltration membranes. The effluent SS is close to 0 and can be directly reused. ‌

Advantages: High sludge concentration, small footprint, suitable for limited space in booster stations, and treatment efficiency increased by more than 30% compared to traditional AO processes. ‌