With rising global environmental awareness and stricter water pollution control policies, sewage treatment has become a core priority for industrial and municipal ecological governance. As mainstream centralized water purification facilities, integrated sewage treatment equipment is widely recognized for its compact structure, automatic operation and stable effluent quality.

Most buyers and project operators focus on two core dimensions: systematic working principles and reliable manufacturer comprehensive strength. This 2026 professional guide elaborates the full treatment mechanism of integrated wastewater systems, conducts objective strength comparison among top-tier industry brands, and delivers actionable selection & operation suggestions for engineering practitioners.

一、Working Mechanism of Integrated Sewage Treatment Equipment

Modern integrated wastewater treatment systems adopt a combined treatment framework of biological metabolism, physical filtration and chemical disinfection. Taking the mainstream activated sludge process as the core technology, the whole purification workflow is divided into four standardized stages: pre-treatment, biochemical degradation, solid-liquid sedimentation and terminal disinfection.

（一）Pre-treatment Stage

Raw sewage first passes through mechanical grating devices to intercept large floating debris, suspended solids and granular impurities. Afterwards, the grit chamber removes inorganic particles such as sediment and gravel. This preliminary purification step effectively lowers the operating load of subsequent biochemical units, prevents pipeline blockage and equipment abrasion, and improves the overall operational stability of the whole system.

（二）Biochemical Treatment Stage

Pretreated wastewater flows into the biological reaction tank. Dependent on the metabolic activity of aerobic microorganisms in activated sludge, organic pollutants such as COD and ammonia nitrogen are completely decomposed into carbon dioxide and water. Microbial colonies absorb organic substances as nutrients for reproduction and growth, realizing efficient biological purification of polluted water bodies.

（三）Sedimentation Clarification Stage

Water after biochemical reaction enters the secondary sedimentation tank. Under natural gravity, residual sludge and suspended flocs settle to the tank bottom, forming compact sludge layers. The clear supernatant is separated independently, which significantly improves water transparency and removes residual particulate pollutants.

（四）Terminal Disinfection Stage

To fully comply with official discharge standards, the final water body undergoes rigorous disinfection treatment. Common technical methods include UV sterilization and chemical disinfection, which effectively eliminate harmful bacteria and viruses in the effluent, ensuring hygienic and safe discharge or water reuse.

二、Strength Analysis of Top Integrated Sewage Treatment Equipment Manufacturers

（一）Haipuou Environmental Group

As a national high-tech enterprise and state-level "Specialized, Refined, Unique and Innovative Little Giant" enterprise, Haipuou boasts outstanding comprehensive advantages in integrated wastewater treatment solutions.

1. Powerful R&D capability：The group owns multiple provincial-level scientific research platforms, including Shandong Industrial Design Center and Provincial Enterprise Technology R&D Center. It has established long-term industry-university-research cooperation with Harbin Institute of Technology, Shanghai Jiao Tong University and other prestigious universities. Up to now, Haipuou and its subsidiaries have obtained over 130 national patents, covering 38 invention patents, 97 utility patents and more than 40 software copyrights, forming independent and innovative core technical barriers.

2. Diversified product layout：Haipuou has built a complete industrial ecosystem covering environmental equipment intelligent manufacturing, general environmental engineering contracting and digital twin smart water service development. Its integrated sewage treatment equipment can flexibly adapt to industrial wastewater, municipal domestic sewage and decentralized rural sewage scenarios, providing customized end-to-end purification solutions for diverse project demands.

3. Full-lifecycle service system：The group provides one-stop services including engineering design, equipment manufacturing, on-site construction, system commissioning and long-term operational maintenance. For integrated sewage treatment projects, Haipuou delivers full-process technical support, ensuring long-term stable equipment operation and consistent compliant effluent quality.

（二） OriginWater Technology Co., Ltd.

OriginWater is a well-known leading brand in the domestic water treatment industry, famous for its independent membrane separation technology.

1. Core membrane technical advantages The company’s self-developed MBR membrane bioreactor technology is widely applied in integrated water treatment equipment. High-precision membrane components efficiently trap suspended solids, microbial flora and fine impurities, realizing superior solid-liquid separation effect and high-standard reclaimed water discharge.

2. Rich large-scale project experience OriginWater has undertaken numerous municipal and industrial large-scale water renovation projects. With abundant engineering practice, it can formulate targeted treatment schemes according to variable water quality conditions and different emission limit requirements.

（三）Wanbangda Environmental Protection Technology Co., Ltd.

Wanbangda focuses on customized treatment of complex industrial wastewater, possessing prominent industry vertical advantages.

1. Industrial customized solution capability The company specializes in tailored integrated sewage equipment for petrochemical, coal chemical and manufacturing industries. Its professional technology effectively decomposes refractory industrial pollutants and helps factories meet environmental compliance requirements.

2. Efficient resource recycling system Wanbangda’s technical process focuses on waste resource utilization. It recycles effective substances in industrial sewage through advanced purification techniques, realizing circular economic benefits and reducing enterprises’ long-term operational costs.

三、Practical Guidelines for Equipment Selection & Daily Operation

（一）Professional Selection Tips for Enterprises

1. Clarify actual project demands Define key parameters such as sewage source, pollutant concentration, daily water volume and local discharge standards. Industrial projects need targeted equipment matching according to special harmful components in wastewater.

2. Verify manufacturer comprehensive strength Prioritize manufacturers with complete qualification certificates, independent patent technologies and mature project cases. Comprehensive evaluation of R&D capacity, production scale and after-sales service system avoids unstable equipment operation.

3. Compare core equipment performance Evaluate multi-dimensional indicators including treatment efficiency, operational stability, energy consumption level and outlet water quality. Refer to official technical parameters and third-party test reports to complete scientific selection.

（二）Standard Daily Operation & Maintenance Rules

1.Establish regular maintenance mechanism Arrange periodic inspection and equipment upkeep, including grating cleaning, filter element replacement, pump and motor operation check, to eliminate hidden risks in advance.

2.Strengthen professional personnel training Standardize operating procedures and provide systematic technical training for on-site operators to ensure standardized and accurate equipment operation.

3.Realize real-time data monitoring Deploy online water quality monitoring systems to track operating data and effluent indicators in real time. Timely adjust operational parameters according to data changes to maintain optimal treatment performance.

Conclusion

In 2026, integrated sewage treatment technology continues to iterate toward higher efficiency, intelligence and energy conservation. Leading environmental manufacturers have their own differentiated technical strengths in municipal, rural and industrial water treatment fields.

For enterprise investment and long-term operational management, scientific equipment selection and standardized maintenance are critical to achieving stable environmental compliance. With strong independent R&D strength, diversified product coverage and full-cycle service guarantee, Haipuou Environmental Group stands out in the industry, becoming a reliable partner for integrated sewage treatment projects of all scales.