MBBR Packaged Wastewater Treatment Plant Domestic Wastewater Treatment System

With the accelerating urbanization process and the growing awareness of environmental protection, domestic wastewater—generated from daily activities such as bathing, cooking, laundry, and toilet flushing—has become a key factor affecting ecological balance and public health. Our Domestic Wastewater Treatment System is a professional, efficient, and user-friendly solution designed to address the challenges of decentralized domestic sewage disposal, realizing the goals of "on-site treatment, up-to-standard discharge, and resource recycling" for residential wastewater.

Our Domestic Wastewater Treatment System integrates physical, biological, and chemical treatment technologies into a compact, modular design, which can efficiently purify domestic sewage with a treatment capacity ranging from 0.5m³/d to 500m³/d, suitable for single-family houses, villas, rural communities, small hotels, scenic spots, highway service areas, and other scenarios where centralized sewage pipe networks are unavailable or insufficient. The system is committed to removing harmful substances such as organic matter, ammonia nitrogen, phosphorus, suspended solids (SS), and pathogenic bacteria from wastewater, ensuring that the treated effluent meets international and local discharge standards, and even realizing reutilization for green irrigation, car washing, and toilet flushing to achieve water resource recycling.

The system adopts advanced and mature treatment processes, with three mainstream options to meet different water quality requirements and application scenarios, all following the "graded treatment, step-by-step purification" principle to ensure stable and efficient treatment effects:

As the most widely used process, it achieves dual effects of organic matter degradation and denitrification through the series operation of anaerobic and aerobic tanks. In the anaerobic section (dissolved oxygen < 0.2mg/L), anaerobic bacteria decompose macromolecular organic matter into small molecular substances, increasing the biodegradability of sewage (B/C ratio from 0.3 to above 0.5); in the aerobic section (dissolved oxygen 2-4mg/L), aerobic bacteria further oxidize organic matter into CO₂ and H₂O, while nitrifying bacteria convert ammonia nitrogen into nitrate nitrogen, with a total nitrogen removal rate of 60%-70%. It is suitable for ordinary domestic sewage treatment scenarios such as rural communities and small residential areas.

Adopting an intermittent operation mode, it completes water intake, reaction, sedimentation, and drainage in the same reactor, replacing space division with time division, which saves more than 30% of the floor space. The operation cycle is usually 6-8 hours (including 4-5 hours of aeration reaction and 1-2 hours of sedimentation), making it particularly suitable for scenarios with large fluctuations in water quality and quantity, such as scenic spots and rural tourism resorts. Compared with continuous flow processes, it reduces sludge production by 20% and has strong adaptability to water quality changes.

Combining membrane separation technology with biological treatment, it uses ultrafiltration membranes (pore size 0.01-0.1μm) to replace traditional secondary sedimentation tanks for solid-liquid separation. The high-efficiency interception effect of the membrane module makes the sludge concentration (MLSS) in the reactor reach 8000-12000mg/L, which is 2-3 times that of the traditional activated sludge method, greatly improving the efficiency of organic matter degradation (COD removal rate > 95%). The treated effluent has a turbidity of < 0.5NTU and SS of < 1mg/L, which can be directly reused, with a reclaimed water utilization rate of up to 30%. It is suitable for high-end residential communities, green buildings, and other scenarios with high water quality requirements.

The whole treatment process is fully automated, from sewage intake, grille interception, and equalization adjustment to biological reaction, membrane separation, disinfection, and effluent discharge, all controlled by a PLC intelligent system, without manual on-site operation, greatly reducing operation and maintenance costs.

• Compact & Space-Saving: The integrated modular design integrates all treatment units into a single equipment, with a small footprint (small-scale equipment covers only 0.5 square meters), which can be installed above ground, underground, or buried, and the surface can be greened after underground installation, with little impact on the surrounding environment.
• High Treatment Efficiency: It can effectively remove more than 90% of COD, BOD, ammonia nitrogen, and suspended solids, and the sterilization rate reaches 99.9% through ultraviolet or chlorine dioxide disinfection, ensuring that the effluent stably meets national and local discharge standards (such as GB 18918-2002, NSF/ANSI Standard 40).
• Energy-Saving & Low-Consumption: Adopting efficient aeration technology and energy-saving motors, the daily power consumption of small-scale equipment is only 1-2 kWh, and the operation cost is low (1.0-1.5 yuan/ton of treated water). The micro-power model is specially designed for small-scale decentralized sewage purification, balancing treatment effect and cost.
• Easy Operation & Maintenance: The PLC intelligent control system realizes automatic start-stop, parameter monitoring, and abnormal alarm, and can be remotely controlled through a mobile APP, allowing operators to check operation data in real time and shorten fault response time to within 1 hour. The maintenance cycle is long, requiring only one comprehensive inspection and maintenance per year, and the membrane module of MBR process only needs regular cleaning (maintenance cleaning once a week, chemical cleaning once every 3 months) with a service life of 3-5 years.
• Environmentally Friendly & Resource-Reusable: The system uses green biological treatment technology, without adding harmful chemicals, no secondary pollution, and the generated sludge can be used as organic fertilizer after harmless treatment, realizing resource recycling. The treated water can be reused for non-drinking scenarios, reducing water consumption costs for users.
• Strong Adaptability: It can adapt to different water quality and water quantity changes, and is suitable for various scenarios such as rural areas, scenic spots, and residential communities. For scenarios with high oil content (such as small farmhouses), an oil separation tank can be added to ensure treatment effect.

Our Domestic Wastewater Treatment System is widely applicable to decentralized domestic sewage treatment scenarios, including but not limited to:

• Residential Scenarios: Single-family houses, villas, courtyards, old communities, and urban villages without centralized sewage pipe networks or with insufficient pipe network capacity.
• Rural Areas: Rural communities, villages, rural tourism attractions, and nursing facilities, solving the problems of incomplete pipe networks and insufficient professional operation and maintenance in rural areas.
• Public Facilities: Highway service areas, railway stations, parks, schools, hospitals, small hotels, and homestays, meeting the compliance requirements of sewage discharge for operation and management.
• Special Scenarios: Green buildings, environmental protection demonstration residences, remote factories, and campsites, realizing the concept of low-carbon environmental protection and water resource recycling.

We are committed to providing high-quality domestic wastewater treatment solutions, adhering to the concepts of "environmental protection, efficiency, energy saving, and practicality". We provide customized design according to the actual needs of users (such as water quality, water quantity, and installation space), and offer one-stop services including equipment supply, on-site installation, commissioning, staff training, and after-sales maintenance. Our after-sales team responds quickly to ensure the long-term stable operation of the equipment, helping users solve sewage disposal problems and contribute to environmental protection and sustainable development.

Choose our Domestic Wastewater Treatment System, and let us work together to build a clean, green, and sustainable living environment.