Water and waste water treatment

Water and waste water treatment on a sewage plant

There are many options to apply methods to avoid damaging the environment. In the case of wastewater e.g. the ventilation of the sediment tank or the pressure ventilation of biological wastewater treatment systems. The oxygen introduction is important, for deep wastewater tanks, wastewater treatment systems with standard aeration tanks or natural clarification ponds alike.

If the wastewater has already entered the natural cycle, ventilating lakes and rivers prevents additional contamination. When treating drinking water, rinsing the filters with compressed air ensures that perfect water is provided and natural water reserves are not used excessively.

Gas which occurs on landfill sites, digestion towers or gas which is produced when treating wastewater does not escape into the environment anymore or is not just burned. It is used sustainably to create energy to relieve the environment and remedy resource deficits. Due to the pressure increase of biogas blowers, the gas is transported to CHPs or generators where the converted energy can be used to heat buildings or greenhouses, for example. The produced gas is measured by AERZEN rotary piston gas meters.

During sludge drying processes, AERZEN positive displacement blowers can be used for the subsequent pneumatic transport of the dried sludge.

AERZEN products not only do their job in the examples given above. Just as there are many options to protect the environment, there are many areas of application for AERZEN positive displacement blowers, rotary lobe compressors and turbo blowers.

Performance3. Pinpoint control of load cycles.
Performance3. Pinpoint control of load cycles.

Performance3. Pinpoint control of load cycles. For a completely new kind of efficiency in aeration tanks.

Variable air requirements and peculiarities in the design and construction of aeration tanks are challenges for any sewage treatment plant. The result: extremely high energy consumption that can make up to 80% of total costs. The solution: innovative combinations of blower, hybrid and turbo blowers from AERZEN. Maximum energy efficiency for basic loads, pinpoint adjustments for peak loads. The result: hitherto unknown efficiencies over the entire operation. The investment can pay for itself in as little as 2 years!


Even better performance in the aeration tanks

Highest efficiencies for blower technology and load profiles are in line as well as most efficient operation of wastewater treatment plants - AERZEN new machine control system makes this possible.

Draft of the heat recovery


Reduce costs for compressed air generation

Wastewater treatment plants are the facilities in cities and municipalities that use the most electricity. Therefore, due to widespread uncertainty concerning the future global energy matrix and the resulting energy market price, there is an urgent need to increase energy efficiency.

Application reports



If modernisations in wastewater treatment plants are due, as a rule the permanently reducing limit values of ammonium, nitrate and phosphate are pushing the investment decisions. If it concerns the budget, in view of the climate protection and the finances it pays off to include the energy efficiency in the plans.

AERZEN turbo blower and positive displacement blower for the sewage plant Kötz

AERZEN provides energy efficient process air generation

Success Story - Wastewater treatment plant Koetz

For process air generation, the Koetz wastewater treatment plant selected an ideal solution: the compound system of AERZEN turbo compressors for base load, and AERZEN positive displacement blowers, or rotary lobe compressors, for peak load, to provide failure-free supply of the biological wastewater treatment plant at optimal cost.