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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

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.

Legfontosabb tények

~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 expertise in the field

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

Measuring technology for sludge concentration ©Hiller
Insights

Improve dewatering results for optimal sludge concentration

Because the achieved polymer concentration can vary, an optimal ratio between polymers and suspended solids in the sludge is only sometimes guaranteed. Optimized dewatering results depend upon controlled incoming sludge concentration and density measurement.

Our expertise in the field

Our Coriolis mass flowmeters combine flow and media density measurement for the constant and accurate dosing of polymer solutions. Alternatively, combining a precise electromagnetic flowmeter with a suspended solids measurement ensures stable and good dewatered sludge results.

  • Ensure optimum flow and density measurement with very dark sludge by using Proline Promass A500 Coriolis flowmeter
  • Achieve stable sludge dewatering results by combining our highly accurate electromagnetic flowmeter Proline Promag W 400 with the suspended solids sensor Turbimax CUS51D
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 expertise in the field

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 expertise in the field

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 expertise in the field

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.

Legfontosabb tények

20%

cost savings

from reduced consumption of polymers

Legfontosabb tények

25%

longer filter life

thanks to improved dewatering results

Legfontosabb tények

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

Végjegyzetek

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