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 OSB Wastewater Treatment
OSB wastewater treatment plants are high-capacity systems with a mixed composition, unlike traditional industrial treatment. A textile company may discharge dyes, a metal processing facility may discharge chrome-nickel, and a food factory may discharge organic loads, while a chemical plant may discharge 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 settling tank
- Biological treatment (activated sludge or MBBR)
- Secondary settling
- 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 with ozone/PAC + biological
- Metal/galvanizing-oriented: Chromium reduction + heavy metal precipitation
- Food-oriented: Anaerobic UASB + aerobic biological
- Chemical-oriented: Fenton + biological + activated carbon
- Mixed: Modular multi-line design
Regulatory and Monitoring Requirements
Central wastewater treatment plants in organized industrial zones are regulated under the Environmental Law No. 2872, the Organized Industrial Zone 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 are: pH, temperature, flow rate, conductivity, KOİ, suspended solids (AKM), total nitrogen, and total phosphorus. These data are transmitted in real-time to the Republic of Turkey Ministry of Environment SEÖS server.
Additionally, 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 case of limit exceedance, the company's discharge can be cut off automatically via a valve.
Advantages of Arsistek OSB Solutions
Our OSB Reference Projects
Our references for central treatment plants in Organized Industrial Zones with different sector profiles.
Frequently Asked Questions
The number of companies within the OSB, sector distribution, production capacities, and characterization studies are taken into account for the design. The contribution of each sector is modeled, and sizing is done according to the worst-case scenario.
Yes. SEÖS is mandatory for all organized industrial zone facilities above a certain capacity. Data is transmitted in real-time to the Republic of Turkey Ministry of Environment server and is under supervision.
Designs starting from 500 m³/day are possible for small organized industrial zones (OSB). In large OSBs, capacities of 50,000 m³/day and above can be achieved. Expansion is planned with a modular line.
Generally, a combination of physical pre-treatment + chemical coagulation + biological active 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 wastewater treatment plant operation services. Remote monitoring via SCADA is provided, along with a field operator team.
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 with an automatic valve, and a warning is sent to the OSB management. This way, the facility is protected.