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Help CenterMoving Bed Biofilm Reactor (MBBR) for High COD Saline Wastewater, Fully Automatic, 500m³/d Design
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As a professional manufacturer established in 2015, Qingdao Conqinphi Environmental Technology Group Co., Ltd. brings over a decade of experience in delivering high-performance wastewater solutions. Our factory spans 10,000–30,000 square meters and we export to markets across North America, South America, Europe, Asia, Africa, and Oceania, with an annual export value of US$10–50 million. The Moving Bed Biofilm Reactor (MBBR) for High COD Saline Wastewater is a fully automatic system designed to handle challenging industrial effluents with a daily capacity of 500 m³. Combining advanced biofilm technology with robust automation, this MBBR system offers a compact, energy-efficient, and reliable solution for treating high-strength, salty wastewater that traditional biological processes struggle with.
Key Features and Technical Specifications
- High COD Removal Efficiency: Designed for COD levels exceeding 10,000 mg/L, our MBBR achieves removal rates of 85–95% through optimized biofilm formation on specially engineered carriers.
- Salinity Tolerance: The system uses acclimated biomass and proprietary carrier media that maintain high activity even at salt concentrations up to 5% (50,000 ppm TDS).
- Fully Automatic Operation: Equipped with a PLC-based control system, the unit automatically adjusts aeration, recirculation, and sludge wasting. Remote monitoring via SCADA is optional.
- Compact Footprint: The moving bed design eliminates the need for large clarifiers and returns activated sludge basins, reducing land requirements by up to 50% compared to conventional activated sludge.
- Low Energy Consumption: Fine bubble diffusers and optimized carrier movement minimize power usage. Typical energy demand is 0.15–0.25 kWh per m³ treated.
- Easy Maintenance: No clogging or channeling; carriers are retained by perforated screens. Periodic visual inspection and minimal sludge handling required.
| Parameter | Value / Range |
|---|---|
| Design Flow Rate | 500 m³/day (21 m³/h) |
| Effective Volume | 150 – 200 m³ (depending on organic load) |
| Carrier Type & Size | HDPE cylindrical carriers, Ø 10–25 mm, specific surface area > 500 m²/m³ |
| Aeration System | Fine bubble tube or disc diffusers, automatic DO control |
| Blower Power | 7.5 – 15 kW (adjustable based on loading) |
| Control Panel | PLC + HMI touchscreen, 24/7 operation |
| Materials of Construction | Tank: HDPE or carbon steel with epoxy lining; piping: UPVC/SS304 |
| Operating Temperature | 10°C – 45°C (lower with heating option) |
| Effluent Quality | COD |
Advantages for High COD Saline Wastewater
Conventional biological treatments often fail in saline environments due to osmotic stress on microorganisms. Our MBBR design tackles this challenge through a combination of specialized biofilm carriers that provide protected habitats for bacteria, and a gradual acclimation protocol that allows the biomass to adapt to high salinity. The moving bed action ensures constant contact between biomass and pollutants, preventing dead zones and maintaining high mass transfer rates. Moreover, the fully automatic PLC control system continuously monitors DO, pH, and temperature, and can adjust aeration intensity to match fluctuating influent loads. This results in stable effluent quality even during peak discharges, which is critical for industries such as petrochemicals, pharmaceuticals, food processing, and textile dyeing where high COD and salt content are common.
Customization and Flexibility: The 500 m³/day design can be scaled up or down. We offer pretreatment (equalization, oil removal) and post-treatment (DAF, MBR, UF/RO) integration services. The system is supplied as skid-mounted modules for quick installation, or as a concrete basin configuration for large-scale projects. All components are manufactured in our ISO9001-certified facility with strict quality control.
Trust and Credentials
With over 200 employees and a 10,000–30,000 m² factory, Qingdao Conqinphi has delivered MBBR systems to clients across 14+ major markets worldwide. Our certifications include ISO9001, ISO14000, OHSAS18001, HACCP, and others, ensuring each product meets international quality and safety standards. We have shipped complete wastewater treatment plants to North America, Southeast Asia, Africa, and Europe, with annual export value reaching US$10–50 million. Every system is backed by our dedicated after-sales team, offering installation supervision, commissioning, training, and remote technical support. Choosing our MBBR means choosing a reliable partner committed to solving your toughest wastewater challenges. Contact us today to discuss your specific project requirements and receive a tailored proposal.
Frequently Asked Questions (FAQ)
-
Q: What is the maximum COD concentration the MBBR can handle?
A: Our MBBR is designed for influent COD up to 15,000 mg/L, and with carrier surface area optimization, it can handle peaks of 20,000 mg/L for short durations. For higher concentrations, pretreatment (e.g., anaerobic digestion) is recommended. We can customize accordingly. -
Q: How does the system perform with highly saline water (e.g., 3-5% salt)?
A: The biofilm attached to carriers protects microorganisms from osmotic shock. With proper acclimation (typically 2-4 weeks), the system maintains >80% COD removal at 5% salinity. Salt-tolerant bacteria can be sourced for extreme cases. -
Q: Is the system truly fully automatic? What operator intervention is needed?
A: Yes, the PLC controls aeration, feed flow, and sludge removal. Operators are required for periodic inspections (daily check of DO and pH sensors), monthly carrier sampling to verify biofilm thickness, and annual maintenance of blowers and pumps. Remote monitoring reduces site visits. -
Q: What is the typical footprint for the 500 m³/day unit?
A: The bioreactor tank itself occupies approximately 50–80 m² depending on the selected configuration (single-stage or multi-stage). With ancillary equipment (blower room, control panel, equalization tank), total footprint is around 100–150 m². Skid-mounted options can be as compact as 60 m². -
Q: What is the lifespan of the biofilm carriers?
A: HDPE carriers have a service life of 15–20 years under normal wear. They are resistant to chemicals and UV degradation (when stored properly). Replacement volume is typically less than 5% per year due to accidental loss. -
Q: Can the MBBR treat wastewater with oil and grease?
A: Yes, but we recommend a pre-treatment system (API separator or DAF) to reduce oil and grease to below 50 mg/L to avoid carrier clogging. Our MBBR can handle emulsified oil at low concentrations. -
Q: Do you provide installation and commissioning support?
A: Absolutely. We offer on-site supervision during installation, full commissioning with performance testing, and training for local operators. For international projects, we can send a team or coordinate remote guidance. All details are defined in the contract. -
Q: What is the warranty period?
A: Standard warranty is 12 months from the date of commissioning or 18 months from shipment, whichever expires first. Extended warranties are available upon request. We also stock spare parts (carriers, diffusers, sensors) for fast delivery.
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