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Wastewater sludge treatment

Optimized dewatering, digester, and disposal processes help reduce operating costs and protect the environment

Band filter press for dewatering sludge from a municipal wastewater plant

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Sludge treatment and disposal into the environment are increasingly regulated worldwide, driving the wastewater industry to explore new solutions, at high costs. To minimize operating costs, sludge preparation and optimizing the dewatering process are essential to reduce its volume for drying or incineration. Anaerobic
digestion of sludge further reduces the volume and weight, and as a by-product, biogas and biomethane can be captured and reused as biofuel and electricity.

Principais fatos

~40%

of the total operating costs of wastewater treatment process

are related to sludge treatment process. Endress+Hauser's portfolio helps reduce operating costs and optimize the treatment processes.

Measurement technology in the sludge preparation process ©Endress+Hauser
Insights

Sludge conditioner preparation

Polymer solutions for sludge conditioning must be prepared by dilution on-site. Flocculants are costly, and to achieve stable dewatering results and maximize dewatering cycles, achieving the right polymer concentration is essential.

Our proven portfolio of highly accurate electromagnetic flowmeters enables optimal polymer solution concentration and polymer consumption.

Teqwave MW 300 in sludge dewatering ©Endress+Hauser
Insights

Improve dewatering efficiency for maximum sludge concentration

Because polymer dosage and sludge solids content can vary, maintaining the ideal polymer-to-solids ratio is not always ensured. Reliable monitoring of incoming sludge concentration is essential to achieve maximum sludge concentration and consistent, optimized dewatering results.

Our expertise in the field

Our inline measuring device for total solids measurement enhances sludge treatment in wastewater treatment plants using microwave transmission. Alternatively, combining a precise electromagnetic flowmeter with a suspended solids measurement ensures stable and good dewatered sludge results.

Micropilot FMR60 installed in centrate shaft ©ARA Worblental
Insights

Foam in the dewatering process

The centrate water from the sludge dewatering process is heavily contaminated with ammonium nitrogen and may only be fed to the wastewater treatment system in dosed quantities. For this purpose, it is buffered in a retention basin. Since the resulting foam of the medium strongly impairs the process, monitoring is indispensable.

Our Micropilot FMR60 radar meter continuously measures the level of the centrate water and can detect the foam formation with the help of the integrated Heartbeat Technology. In addition, the optimum dosing quantity of the defoamer and efficient pump control can be ensured.

Digesters in a wastewater treatment plant ©Kläranlage Düsseldorf
Insights

Efficient digester processes

Beneficial bacteria must be protected from critical conditions in the sludge digestion process.

Our process instrumentation guarantees an environment where digester bacteria can flourish: maintained darkness, an absence of oxygen, constant temperature and a nearly neutral pH value.

Biogas flow rate and methane concentration measurement ©Kläranlage Düsseldorf
Insights

Precise flow and methane measurements in wet biogas

Biogas flow rate and methane concentration are critical parameters indicating process disturbances in anaerobic sludge digestion. However, environmental conditions such as significant flow dynamics, water-saturated biogas, changing methane concentration and extremely low pressure make measuring these parameters difficult for most devices.

Our unique inline Proline Prosonic Flow B 200 ultrasonic flowmeter provides accurate, reliable measurement of wet biogas flow rates and methane concentration under fluctuating process conditions.

Benefits

Striking a balance between legislative obligations and cost efficiency is one of the main challenges in the wastewater industry today. Our industry consultants worldwide are familiar with your local requirements and can make specific recommendations on improving your processes. Based on their expertise and and our dedicated instrumentation portfolio, they achieved remarkable results together with our customers.

Principais fatos

20%

cost savings

from reduced consumption of polymers

Principais fatos

25%

longer filter life

thanks to improved dewatering results

Principais fatos

3 million

Proline Promag electromagnetic flowmeters have been sold since their launch in 1977 in a wide range of applications.

Takeaway

How we can help

Endress+Hauser's portfolio helps plant operators to increase cost efficiency by accurately tracking dewatering rates against target and consumption of polymers required for sludge conditioning.

  • Optimized polymer consumption and enhanced dewatering results
  • Improved digester process and condition monitoring
Solutions

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Notas finais

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