Innovative Technology Helps Efficient Wastewater Treatment

Ⅰ、Product Overview

MBBR (Moving Bed Biofilm Reactor) is an efficient wastewater treatment process that combines the advantages of biofilm and activated sludge processes. Its core lies in providing a three-phase growth environment for microorganisms through the dynamic flow of suspended biological fillers, thereby achieving efficient removal of organic pollutants, nitrogen, and phosphorus. This technology is widely used in the fields of municipal sewage, industrial wastewater, rural decentralized sewage treatment, and black and odorous water treatment, especially suitable for scenarios where land is scarce or rapid expansion is needed.

Ⅱ、Core technical principles

1.Dynamic biofilm carrier

MBBR uses specially designed suspended fillers (such as polyethylene, polypropylene, or HDPE materials) with a density close to water and a specific surface area of over 800 m ²/m ³. A biofilm is formed on the surface of the packing material, with anaerobic/facultative bacteria growing inside and aerobic bacteria growing outside, forming a microreactor to achieve synchronous nitrification and denitrification, and enhance nitrogen and phosphorus removal.

2.Efficient mass transfer and fluidization control

By bottom microbubble aeration or mechanical stirring, the packing material flows freely in the reactor, enhancing gas-liquid mass transfer efficiency and increasing oxygen utilization by more than 30%. Biofilms maintain their activity through natural shedding and regeneration, without the need for backwashing, thus avoiding clogging issues.

3.Composite processing mode

By combining the synergistic effect of suspended sludge and attached biofilm, the sludge concentration can reach 5-10 times (30-40 g/L) of conventional activated sludge process, the volumetric load can be increased by 2-3 times, and the COD removal rate can reach 96% 269.

Ⅲ、Product advantages

1.Efficient and energy-saving

The processing efficiency is 2-3 times higher than traditional processes, with a residence time of only 4-6 hours and a 30% reduction in energy consumption.

By using rotary cutting microbubble aeration technology, the oxygen utilization rate is twice that of traditional processes.

2.Flexible adaptation

Supporting underground or ground installation, occupying only 20-50% of the traditional process area, suitable for areas with scarce land resources.

Modular design, which can be used alone or combined with processes such as A ² O and SBR to meet the requirements of upgrading and transformation.

3.Stable and impact resistant

Biofilms have strong low-temperature resistance and can operate stably below 8 ℃, adapting to water quality fluctuations and toxic impacts.

The sludge yield is reduced by 60%, the remaining sludge volume is small, and the operation and maintenance costs are low.

4.Intelligent management

Integrated PLC automatic control system, supporting remote monitoring and fault alarm, achieving unmanned operation.

Equipped with an IoT cloud platform, real-time optimization of operating parameters, reducing manual intervention

ⅣTypical application scenarios

1.Municipal sewage upgrading and renovation

Without adding new land, the treatment capacity can be increased by three times through the addition of fillers, and the effluent quality can reach Grade A standard.

2.Industrial wastewater treatment

For high concentration and difficult to degrade wastewater from papermaking, food, pharmaceuticals, etc., combined with anaerobic aerobic MBBR combined process, the COD load can reach 30 kg/(m³·d).

3..Rural decentralized processing

The integrated equipment is suitable for scenarios such as villages, scenic spots, and nursing homes, with a daily processing capacity of 10-5000 tons. The effluent can be used for irrigation or reuse.

4.Hospitals and special wastewater

Strengthen disinfection and denitrification functions, treat wastewater containing pathogens or antibiotics, and meet the "Discharge Standards for Water Pollutants in Medical Institutions".

Ⅴ.Key points of process design

1.Packing selection and filling rate

Preferred modified suspension fillers with good hydrophilicity and fast film formation, with a filling rate not exceeding 67% (60% in aerobic zone and 50% in anoxic zone).

Regularly check for filler loss and install anti blocking grilles or air blowback devices.

2.Aeration and fluidization control

Use perforated aeration tubes or banana shaped mixers to ensure uniform fluidization of the packing and avoid accumulation of 69.

Dissolved oxygen control: aerobic section ≥ 2 mg/L, anoxic section 0.2-0.5 mg/L, anaerobic section ≤ 0.2 mg/L.

3.IT Operation Management

When starting at low temperatures in winter, the membrane hanging period is about 30 days, and the aeration time needs to be extended.

Regularly monitor the maturity of biofilms (microscopic examination of indicator microorganisms such as nematodes and nematodes).

Ⅵ、Future prospects

With the tightening of environmental standards, MBBR process is becoming the mainstream technology in the field of sewage treatment due to its high efficiency and adaptability. Future development directions include:

1.Filler innovation: develop high specific surface area and anti-aging materials to further improve 2.nitrogen and phosphorus removal efficiency;

Intelligent upgrade: combining AI algorithms to optimize operating parameters, achieving precise aeration and energy consumption control;

3.Low carbon integration: coupling photovoltaic power generation and resource recovery technology to promote the transformation of sewage treatment plants into energy plants