OSB wastewater treatment plants are large-scale systems that centrally treat the mixed industrial wastewater generated by all factories within an Organized Industrial Zone. The sectoral composition of each OSB is different: wastewater from various industries such as textiles, metals, food, chemicals, and paper comes to the same facility.
For this reason, OSB facilities require a wide capacity range (1,000-50,000 m³/day), balancing tanks resistant to flow fluctuations, multiple process stages (physical + chemical + biological), and continuous monitoring infrastructure.
Arsistek designs and installs turnkey central treatment plants for OSB administrations, contractors, and engineering companies.
Characteristics of Organized Industrial Zone Wastewater Treatment
OSB wastewater treatment plants are systems with high capacity and mixed composition, differing from classical industrial treatment. A textile company can load color, a metal processing company can load chrome-nickel, and a food factory can load organic load, while a chemical plant can load specific pollutants.
Therefore, the process design of the OSB facility is based on characterization studies, sector distribution analysis, and dimensioning according to the worst-case scenario. Typically, a combination of physical pre-treatment + chemical coagulation + biological activated sludge + advanced treatment (sand filter, UV) is used.
Moreover, under the Environmental Law No. 2872 and the OSB Law, continuous emission measurement (CEM) and remote monitoring systems are mandatory. A separate flow/quality measurement station is established for each company at the facility's entry point.
Main Components of the OSB Facility
- Inlet structure, bar screen and sand trap
- Equalization tank (flow-load balance)
- Chemical treatment unit (coagulation-flocculation)
- Primary sedimentation tank
- Biological treatment (activated sludge or MBBR)
- Secondary sedimentation
- Advanced treatment (sand filter, UV/Ozone)
- Sludge dewatering (belt-press / decanter)
- SCADA and remote monitoring system
Selection According to Applied Processes
The appropriate process is selected according to the sector profile of the OSB:
- Textile-oriented: Color removal using ozone/PAC + biological
- Metal/galvanized-oriented: Chromium reduction + heavy metal precipitation
- Food-oriented: Anaerobic UASB + aerobic biological
- Chemical-oriented: Fenton + biological + activated carbon
- Mixed: Modular multi-line design
Regulations and Monitoring Requirements
Central treatment facilities in organized industrial zones are regulated under the Environmental Law No. 2872, the Organized Industrial Zones Law (4562), the Water Pollution Control Regulation (SKKY), and the Continuous Emission Measurement Systems Communiqué.
The parameters that must be continuously monitored at the facility include: pH, temperature, flow rate, conductivity, COD, suspended solids (SS), total nitrogen, and total phosphorus. These data are transmitted in real-time to the Republic of Turkey Ministry of Environment SEÖS server.
Moreover, an industrial discharge permit is obtained for each company participating in the organized industrial zone, and a separate measurement station is established at the entry point. In the event of limit exceedance, the company's discharge can be automatically cut off with a valve.
Advantages of Arsistek OSB Solutions
Our OSB Reference Projects
Our references for central treatment facilities in Organized Industrial Zones with different sector profiles.
Frequently Asked Questions
The number of companies within the organized industrial zone, sector distribution, production capacities, and characterization studies are taken into account for the design. The contribution of each sector is modeled, and sizing is performed according to the worst-case scenario.
Yes. SEÖS is mandatory for all OSB facilities above a certain capacity. Data is transferred in real-time to the Republic of Turkey Ministry of Environment server and is under inspection.
Designs starting from 500 m³/day are possible for small organized industrial zones. In large organized industrial zones, capacities of 50,000 m³/day and above are achieved. Expansion is planned with a modular line.
Typically, a combination of physical pre-treatment + chemical coagulation + biological activated sludge or MBBR + advanced treatment is used. Biological treatment stands out as the main process.
Yes. After the facility is established, a long-term operation contract can be made within the scope of treatment plant operation services. Remote monitoring via SCADA and a field operator team are provided.
A separate measurement station is established at the entry point for each company. When a limit exceedance is detected, the discharge of that company is cut off by an automatic valve, and a warning is sent to the OSB management. Thus, the facility is protected.