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AO-MABR process

AO-MABR process

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  • Detailed Description
  • Product Overview
    The integrated wastewater treatment equipment is a sewage treatment system designed and manufactured by our company, which highly integrates multiple biological treatment processes into a movable modularized box. This product adopts standardized design, factory prefabrication, and on-site rapid assembly, aiming to provide a solution for domestic sewage, village sewage, and organic wastewater treatment of similar nature, featuring compact land occupation, short construction period, and high automation level. Depending on different treatment objectives and inlet conditions, our company offers various mainstream process configurations such as A²O-MBBR, AO-MBR, multi-stage AO, and AO-MABR to meet differentiated effluent standards and management needs.
    Structure and working principle
    The main body of the equipment is a sealed box made of carbon steel corrosion-resistant, high-strength fiberglass, or stainless steel. The interior is divided according to functions, integrating biochemical tanks, sedimentation/membrane tanks, equipment rooms, and intelligent control systems. Its core difference lies in the process combination of the biochemical section:
    A²O-MBBR process
    Process principle: Based on the traditional anaerobic-anoxic-aerobic (A²O) process, MBBR suspended carriers are added to the aerobic zone. The system simultaneously contains activated sludge and attached biofilm, forming a composite biological treatment system. The carriers provide a vast area for microorganisms to attach, enabling the enrichment of high-concentration biomass, which is particularly beneficial for the growth of nitrifying bacteria, thereby enhancing nitrogen and phosphorus removal as well as treatment load.
    Technical characteristics: High volumetric load, relatively enhanced shock resistance; good simultaneous nitrification and denitrification effect; potential reduction in excess sludge production.
    AO-MBR process
    Process principle: The process utilizes anoxic-aerobic (AO) biological treatment and replaces the traditional secondary sedimentation tank with a membrane bioreactor (MBR). Hollow fiber membranes or flat sheet membranes are employed for solid-liquid separation, resulting in clear effluent. Moreover, the process can completely retain sludge within the biological tank, maintaining a high concentration of activated sludge.
    Technical features: The effluent water quality is excellent (with extremely low suspended solids) and can be directly reused; it occupies a smaller area; the sludge concentration is high, and the system is resistant to shocks. However, regular maintenance and cleaning of the membrane should be paid attention to.
    Multi-stage AO process
    Process principle: By arranging multiple stages of anoxic (A) and aerobic (O) units in series, a multiple denitrification-nitrification cycle is formed. This stepped design aims to more thoroughly remove carbon sources and nitrogen, and is particularly suitable for wastewater with high requirements for total nitrogen removal and a relatively moderate carbon to nitrogen ratio.
    Technical characteristics: The nitrogen removal efficiency is relatively high, with good process flexibility; the operation management is relatively mature; and it has strong adaptability to changes in water quality.
    AO-MABR process
    Process principle: Integrate Membrane Aerated Biofilm Reactor (MABR) technology within the AO framework. This technology utilizes permeable membranes as both aeration carriers and biofilm attachment substrates, allowing oxygen to diffuse through the membrane wall while biofilm grows on the membrane surface. It enables single-stage simultaneous nitrification and denitrification, achieving high oxygen utilization efficiency.
    Technical features: relatively low energy consumption (high aeration efficiency); efficient nitrogen removal in a single reactor; stable biofilm structure and stable treatment effect.
    Core common technical features
    High integration and rapid deployment: All process units, equipment, and electronic control systems are prefabricated in the factory, requiring only basic installation and pipeline connection on site. The construction period is significantly shorter than traditional civil engineering methods.
    Intelligent fully automatic operation: Equipped with a PLC intelligent control cabinet, it realizes automatic operation and fault alarms for equipment such as water pumps, fans, aeration, and disinfection. It supports remote monitoring, is easy to manage, and can achieve unattended operation.
    Durable material and long service life: The box body is made of heavy-duty anti-corrosion technology or corrosion-resistant fiberglass material, and core components such as fans and water pumps are selected from well-known brands, aiming to ensure long-term stable operation of the equipment.
    Flexible adaptation, process options: For different emission standards (such as Grade A, Grade B, and local standards) and on-site conditions (such as land use and energy consumption requirements), the most suitable process combination can be selected to achieve customized design.
    Environmentally friendly and space-saving: The equipment can be fully buried, partially buried, or installed above ground, with the surface capable of being re-vegetated, providing an aesthetically pleasing appearance without damaging the environment. The integrated design significantly conserves land use.
  • Main technical parameters

    parameter item

    Description / Reference range

    Single set processing scale

    5 - 500 m³/d (multiple sets in parallel or customization can be adopted for larger scales)

    Adaptability to inlet water quality

    CODcr: ≤ 400mg/L， BOD5: ≤ 200mg/L， NH3-N: ≤ 40mg/L， SS: ≤ 250mg/L（Typical design value）

    Effluent quality standard

    Based on specific requirements, the design can meet standards such as Level A and Level B of the "Emission Standards for Pollutants from Municipal Wastewater Treatment Plants"

    Box material

    Carbon steel corrosion protection (epoxy asphalt), fiberglass reinforced plastic (FRP), stainless steel (SUS304)

    control system

    PLC fully automatic control, touch screen operation, with optional support for IoT remote monitoring
  • Typical application areas
  • This equipment is widely applicable to various decentralized and small-to-medium-scale wastewater treatment scenarios:
  • Municipal and rural sewage: domestic sewage treatment in rural areas, towns, and urban-rural fringe areas without pipe network coverage or with high construction costs for pipe networks. Residential areas and public service facilities: domestic sewage treatment and reuse generated by residential areas, schools, hospitals, hotels, resorts, etc. Tourism and transportation facilities: independent wastewater treatment stations in highway service areas, tourist attractions, and areas with a high concentration of guesthouses. Industrial supporting wastewater: It is used in conjunction with low-concentration organic industrial wastewater treatment stations for food processing, slaughtering, washing, and other related industries.

 

Keywords : Integrated wastewater treatment equipment series 农村污水处理设备

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Contact: Manager Shao            Contact phone number: 1377-1332-260                  Contact email:hongtuhb@163.com                Contact address: Gaogong Road, Gaocheng Town, Yixing City, Jiangsu Province

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