Professional manufacture factory for waste incinerator, sewage treatment and sludge dewatering equipment.
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Professional manufacture factory for waste incinerator, sewage treatment and sludge dewatering equipment.
20 Units Sewage Treatment Machine Loading to Coastal City for Fish Cultivating Wastewater Purification
April ,2025,20 Units Sewage Treatment Machine Loading to Coastal City for Fish Cultivating Wastewater Purification.
Underground sewage treatment equipment is a modular and efficient sewage biological treatment system. By burying the treatment facilities underground and combining biofilm technology, anaerobic aerobic (A/O) process, etc., it achieves efficient purification of domestic sewage, industrial organic wastewater, etc. Its core advantages lie in space saving, stable operation, and environmental friendliness. In recent years, it has been widely used in urban, rural, and industrial fields. The following provides a detailed analysis from the aspects of technical principles, core features, application scenarios, and limitations.
1、Technical principles and process flow
Underground sewage treatment equipment mainly removes organic pollutants from sewage through biodegradation, and its treatment process can be divided into the following steps:
Wastewater collection and pretreatment: Wastewater enters the regulating tank through pipelines for homogenization, and then large suspended particles and oil are removed through grilles and sedimentation tanks.
Biodegradation: Wastewater enters a biological reaction zone (such as a contact oxidation tank) and decomposes organic matter under the action of anaerobic and aerobic microorganisms. Anaerobic reactions generate gases such as methane, while aerobic reactions involve the participation of oxygen to convert organic matter into carbon dioxide and water.
Secondary sedimentation and disinfection: The treated wastewater is further treated in a sedimentation tank to remove residual particles, and the water quality is ensured to meet standards through ultraviolet or chemical disinfection.
Discharge or reuse: Purified water can be directly discharged into natural water bodies or used for recycling purposes such as greening and flushing.
2、Core features and advantages
The prominent features of buried sewage treatment equipment are mainly reflected in the following aspects:
High space utilization rate: The equipment is buried underground, and the surface can be reclaimed as green belts, parking lots, etc., saving land resources, especially suitable for urban areas with land scarcity.
Low environmental impact: The operating noise is below the standard of Class II areas, and the sludge production is low. The odor is controlled through soil deodorization or high-altitude emission technology to reduce the impact on surrounding residents.
Convenient operation and maintenance: adopting an automated control system, supporting remote monitoring, low daily maintenance frequency (such as sludge cleaning cycle can last up to 3 months), reducing labor costs.
Strong adaptability: It can handle sewage with large fluctuations in water quality, suitable for different scale scenarios, from small communities with a daily processing capacity of tens of tons to industrial parks with thousands of tons that can be customized.
Energy saving and environmental protection: Compared with traditional processes, energy consumption is reduced by more than 30%, and corrosion-resistant materials such as carbon steel and fiberglass are used, with a service life of up to 20 years.
3、Application scenarios
This device is widely used in places with high environmental and spatial requirements, including:
Residential areas: domestic sewage treatment in residential communities, villa areas, rural concentrated residential areas, etc.
Public service facilities: schools, hospitals, hotels, scenic spots, airports, etc.
Industrial sector: Organic wastewater treatment for food processing, slaughterhouses, and small factories.
Special environment: Areas that require low disturbance treatment, such as water source protection zones and ecologically sensitive areas.
4、Limitations and Challenges
Despite significant advantages, underground sewage treatment equipment still has the following limitations:
Difficult maintenance: After the equipment is buried underground, troubleshooting and component replacement require excavating the ground, which is time-consuming and costly.
Environmental adaptability requirements: Deep burial for antifreeze is required in northern regions, while flood control design needs to be considered in southern regions, which increases construction complexity.
Scale limitation: More suitable for small and medium-sized sewage treatment projects, large-scale projects need to be combined with other processes.
High initial investment: Integrated design and special materials (such as stainless steel) may result in higher costs than traditional above ground facilities.
5、Future Development Trends
With the tightening of environmental policies and technological innovation, buried equipment is developing towards intelligence and modularity. For example, real-time water quality monitoring can be achieved through IoT technology, or efficient membrane bioreactors (MBR) can be used to further improve treatment efficiency. In addition, its application potential in rural sewage treatment and urban decentralized treatment is enormous, and it is expected to become an important supporting technology for the construction of "waste free cities".
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