Heat exchanger for sludge
Water treatment plants and biogas plants release a lot of heat. Heat that we can reuse. Our sustainable sludge/sludge and sludge/water heat exchangers are specially designed to recover a maximum of heat. This reuse of heat leads to a substantial reduction in production costs and an increase in operating efficiency.
TASK Industrial Environmental Engineering is your contact within the Benelux for the range of Läckeby from Sweden. The high-quality Läckeby heat exchangers have been installed in water treatment plants and biogas plants for more than 20 years. These top quality compact heat exchangers stand for a high degree of heat recovery, a long lifetime and easy maintenance.
What makes our heat exchangers unique?
Our sludge heat exchangers are used for highly viscous substances, such as water treatment sludge and digested sludge. They are compact units with high heat transfer and large flow capacity. In addition, maintenance and inspection are very easy thanks to the hinged lids on the ends.
Two versions are available: the sludge-water heat exchanger and the sludge-sludge heat exchanger. The sludge-sludge heat exchanger consists of two sludge-water heat exchangers, interconnected by a water circuit.
TASK is the exclusive Benelux distributor for the range of Lackeby products. Läckeby produces equipment for water treatment and heat recovery. These units are produced in Sweden.
Key technical features at a glance:
unique patented design specifically for sludge
high heat transfer
high throughput capacity
minimum pressure loss
Patented “open” retaining chamber ensures homogeneous sludge temperature
clogging-insensitive
compact and easy to install units
simple inspection and maintenance work
insulated housing
Both sides of heat exchanger can be opened for easy maintenance
How does a heat exchanger work?
Our heat exchangers are shell-and-tube heat exchangers (tube heat exchangers). In the video below you can see the construction of the heat exchangers.
Applications of heat exchangers
Sludge applications
- heating or cooling substrates for digesters
- keeping a digester at temperature
- energy reuse from digestate
Wastewater applications
- cooling of mixed-liquor in a biological water treatment plant
- energy reuse from effluent
Heating the digester substrate in biogas plants
Our sludge/water heat exchanger is ideally suited for heating the digester substrate in anaerobic digesters (biogas). In this case, heat is extracted from central heating water to heat the sludge in the digester. These heat exchangers have been used with proven effectiveness in numerous large and small biogas plants.
One step further: recover heat from digested sludge
The excess heat produced during the digestion process can be used to preheat the biogas substrate. The sludge/sludge heat exchanger recovers the heat from digested sludge to release it to the raw sludge, through a closed water supply system. Such a design eliminates the risk of contamination.
An additional circular sludge-water heat exchanger can be used to maintain the temperature of the digester.
Preheating hot water circuits
Our sludge-water and air-water heat exchangers are ideally suited for preheating water circuits. This preheated water can be used internally. For example, water treatment in laundries or other industries where large amounts of hot water are needed.
Heat exchangers from Läckeby are very versatile, you can also use them as cost-saving applications for air conditioning or heating.
Support services for your heat exchanger
We provide efficient installation and delivery of each heat exchanger. You can also contact us for the following services:
- Measurement and control techniques
- Technical assistance
- Expansion of the installation
Featured Projects
Some of our realizations worldwide. Some projects were realized by the mother house Läckeby Sweden, some by our colleagues on all continents, some by Task. A click on the pictures below will give you more info on the respective projects.
Preheating sludge in water treatment
TASK supplies heat exchangers for efficient preheating of sludge in a water treatment plant. Save energy with our shell tube heat exchangers.
Alternative to spiral heat exchanger
Heat exchangers in a space-saving arrangement
Heat exchangers can be stacked on top of each other for maximum space saving.
Heat recovery waste treatment
Energy recuperation in biogas plant
Task realised an innovative solution for energy recovery in a biogas plant. Our heat exchangers contribute to more sustainable energy management.
News
Heat recovery from effluent
Effluent from wastewater treatment plants often still contains precious heat. This heat can be recovered by means of heat exchangers.
Visit us at Aqua Nederland
Heat exchangers for the US biogas market
Heat exchangers in Europe’s largest wastewater treatment plant
One of the largest gas scrubbers in Belgium
Water reuse in slaughterhouse
Roto-Sieve in plastic recycling
Water reuse for industry
Biorotor
Oil emulsion removal with membranes
Would you like more information or a quote?
Talk to us about your problem. We will take the time to go over your project together. Our many years of experience allow us to quickly work out the right solution to your problem.
