At the “nerve endings” of the urban pipe network, the integrated lifting pump station is reshaping the sewage transportation pattern with the innovation of “full integration + intelligence”. This “underground heart” buried at a depth of 6-15 meters, through the coordination of grids, submersible pumps, and intelligent control systems, efficiently lifts decentralized sewage to the treatment plant, with an average daily transportation volume of over 200,000 tons, becoming the core hub of sponge city construction.
Five links to build an intelligent transportation system
“Capillaries” at the end of the network
- Multi-source confluence design:
DN300-DN1200 water inlet branch pipes are connected to the pump station, and turbulence is eliminated through the diversion trough (slope 1:100). An old community renovation case: the uniformity of the flow of 5 branch pipes was increased to 98%, avoiding the impact of “water hammer”.
- Anti-blocking grille:
The coarse screen (gap 20mm) + fine screen (5mm) double-stage interception, a commercial street pump station intercepts 180kg of garbage per day. Equipped with automatic backwash brush (started every 30 minutes), the blockage alarm response time is less than 30 seconds.
The “smart brain” of the water collection pool
- Precise liquid level control:
Ultrasonic level meter (accuracy ±2mm) links 3 submersible pumps (1 in use and 2 in reserve) to achieve intelligent switching of “low liquid level sleep – medium liquid level single pump – high liquid level dual pump”. Data of a pump station in an industrial park: the number of daily starts and stops has been reduced from 48 to 12 times, and the life of the motor has been extended by 2 times.
- Anti-deposition technology:
The pool bottom has a 45° inclination + guide plate, and is automatically flushed when the flow rate is >0.4m/s. The tailwater lift pump station of a sewage treatment plant has been operating for 3 years without any siltation.
The “power heart” of the submersible pump
- Permanent magnet synchronous motor:
The efficiency of IP68 submersible motor reaches IE5 level. The energy consumption per ton of water of a 300m³/h pumping station is 0.08kW・h, which saves 40% energy compared with traditional pumping stations.
- Anti-entanglement impeller:
Blade large channel design (particle size 76mm), a slaughterhouse pump station ran continuously for 5000 hours without blockage.
The pipeline’s “safety artery”
- Material Revolution:
HDPE spiral pipe (ring stiffness SN16) replaced concrete pipe. The anti-floating design of a pump station along the river can withstand a pressure of 0.6MPa and has a service life of up to 50 years.
- Valve Smart Group
Electric butterfly valve (switching time <15 seconds) + silencer check valve, a certain underpass pump station achieves 0.5 second water hammer protection to avoid pipe bursting.
“Super Butler” in the Cloud
- Digital Twin System:
The 1:1 virtual pump station displays the liquid level, flow rate, and energy consumption in real time. A water group uses AI to predict pump failures with an early warning accuracy rate of 97%.
- Mobile APP control:
Operation and maintenance personnel can start and stop equipment remotely and view 360° panoramic images. A pump station in a scenic area has achieved “zero manual inspection”, saving 120,000 yuan in costs annually.
“Customized solutions” for urban drainage
- Renovation of old residential areas:
200 communities in a second-tier city installed underground pumping stations to solve the problem of waterlogging every time it rains for 20 years, and the frequency of pipe network overflows decreased by 90%.
- Industrial Park:
A chemical park is equipped with a corrosion-resistant pump station (made of 316L stainless steel) to transport acidic and alkaline wastewater (pH 2-12), which has been running continuously for 365 days without leakage.
- Sponge City:
A new district combined a pump station with an ecological filter tank, and rainwater was reused for greening after pre-treatment, saving 150,000 tons of water annually and was awarded the “Living Water Demonstration Project” by the Ministry of Housing and Urban-Rural Development.
From “Transportation” to “Urban Smart Node”
With the advancement of the “Three-Year Action Plan for Improving the Quality and Efficiency of Urban Wastewater Treatment”, integrated pumping stations are evolving from single-lift to multi-functional integration:
- Water quality monitoring pre-position:
Built-in COD and ammonia nitrogen sensors upload data in real time to guide the peak load regulation of the treatment plant, saving 20% of reagents in a pilot project.
- Emergency drainage unit:
The bypass was automatically opened during heavy rain, and a pump station at a waterlogged area in a certain city started emergency drainage within 10 minutes, increasing the drainage volume by 3 times.
- Underground space development:
Combined with the comprehensive pipeline corridor, a pocket park was built above a pump station in a new city, increasing land utilization rate by 50%.
The buried “city medal”
This little-known device silently transports tens of millions of tons of sewage every day, but it carries the lifeline of the city’s operation. Its wisdom lies in its millimeter-level precision control, allowing every drop of water to flow in the right direction; its responsibility lies in its prefabricated integrated design, becoming the first line of defense against waterlogging. As the municipal engineer said: “When we enjoy a clean environment on the ground, don’t forget the underground pumping station, which is using technology to protect the dignity of the city.”
