AVK CSR 2023-24 web - Flipbook - Page 27
development”, various cities along the
Yangtze River have shown their commitment
to the protection and restoration of the river’s
ecological environment.
220,000 m3/day, while Phase III added an
additional 115,000 m3/day, bringing the total
capacity to 335,000 m3/day. The long-term
design capacity is 450,000 m3/day.
Pilot city for green development
Wuhu, located on the banks of the Yangtze
River, has in recent years made a continuous
effort to restore the ecological environment
of the Yangtze River. In July 2018, the Three
Gorges Corporation selected Wuhu as one
of the first pilot cities for the Yangtze River
protection efforts – an action that not only
sets the tone for the future development
of the city, but also marks a new historical
stage in ecological protection and sustainable
development in the Yangtze River area.
AVK valves for complex solutions
The project of upgrading the plant involves
adding advanced treatment units after the
existing secondary treatment process, adopting
further advanced and complex techniques in
each of the project’s phases.
As the largest wastewater treatment plant in
southern Anhui, the Zhujiaqiao Wastewater
Treatment Plant undertakes the comprehensive
task of treating domestic wastewater from
Wuhu and its surrounding area. To improve
efficiency, achieve higher discharge standards,
and enhance the regional water ecological
environment, the plant has undergone multiple
phases of upgrading and expansion. Phases
I and II have a total treatment capacity of
AVK Valves in Shanghai delivered a variety
of valve solutions for the expansion project
including gate valves, butterfly valves, check
valves, and knife gate valves, ranging from
DN50 to DN2000 – in total more than 400
units.
Amidst the phases, there are several technical
processes such as precise control of biological
treatment, achieving efficient flocculation and
sedimentation, and implementing MBR flat
membrane technology.
The AVK valves for wastewater treatment with
precision control capabilities and corrosion
resistance support stable and efficient
biological treatment.
Enhanced capacity and environmental
benefits
Following the project, the plant has improved its
treatment capacity. Now, the treated water lives
up to the national Class A discharge standard.
This means that the treated wastewater can
be safely discharged into the Yangtze River,
reducing its negative impact on the ecological
environment.
Also, the project has positively influenced the
surrounding aquatic environment, especially
at the Wuhu Jiangdong Water Ecological Park
which now receives 40,000 tons of tailwater
daily from the plant. Through ecological
purification facilities such as subsurface
flow constructed wetlands, the nitrogen and
phosphorus contents are reduced, elevating the
water quality to meet the Surface Water Quality
Standard Class IV. This cleaned water is then
discharged into the surrounding Banshengyan
and Baoxingyan water systems. By feeding
the cleaned water into the urban river system,
a constant source of freshwater is provided,
improving the water environment, and achieving
water pollution control, ecological restoration,
and resource protection.
AVK Sustainability report 2023/2024 | 27
