AVK sustainability report 2023 with links A4 - Flipbook - Page 24
APPROPRIATE
WASTEWATER
MANAGEMENT
The UN Environment Programme (UNEP),
the leading environmental agency of the
UN, reports that approximately 80% of all
wastewater is discharged directly into nature
without any treatment or processing.
(Source: unep.org, 2019)
At the same time, the International Energy
Agency (IEA), has calculated that untreated
wastewater impacts the climate three times as
much as treated wastewater when it comes to
greenhouse gas emissions.
AVK develops, manufactures, and markets
products of a specially designed quality that
can handle the aggressive substances in
wastewater management.
CASE
Shanghai Zhuyuan No. 2 Wastewater treatment plant
AVK collaborates with Zhuyuan
Wastewater Treatment Plant in Shanghai
to upgrade the capacity of No. 2 Waste
Water Treatment Plant. In Shanghai,
urban development strains wastewater
management, which is why this project
plays an important role in contributing
to improve the city’s wastewater
management.
Central to the upgrade is the
improvement of the overall distribution
well, which works as the central hub
for the distribution of wastewater in the
Zhuyuan treatment plants. This well
was built with the aim of diverting and
reducing wastewater in the area. After
the improvements, the total distribution
well can ensure reliable operation in the
long term and facilitate integration with
24 | AVK Sustainability report 2022/2023
the “Ten Billion Project” – Zhuyuan Phase IV
project, which, among other things, handles
1.2 million tons of wastewater per day from
the treatment plant and 500,000 tonnes per
day from storage tanks.
The project includes several upgrades aimed
at improving wastewater distribution and
management. Among other things, ten weir
gates in the overall distribution well have been
replaced with adjustable gates supplied by
AVK. As a result, the control of the wastewater
flow has been improved. The power and
control system in the overall distribution well
has also been improved to ensure more stable
operation and precise adjustments.
When AVK’s hydraulic weir gates are
fully installed, the system can control
the distribution of the flow, make precise
adjustments, and react quickly to changing
conditions. In addition, the installation of
the hydraulic weir gates contributes to the
realisation of a so-called “Sponge City”, a
concept designed to absorb and manage
water more sustainably in cities. These
improvements guarantee stable operation of
the wastewater treatment plant, optimise flow
control during treatment, and help them meet
environmental standards, including improving
the water quality of the Yangtze River.
The project has reduced the risk of
overflows during both dry and rainy seasons,
resulting in increased operational efficiency
and greater resilience to flood disasters.
In addition, it contributes to the UN’s
broader Sustainable Development Goals on
sustainable water management in urban
areas.
