Sludges - Import export

Sewage sludge dewatering offers enormous potential savings for operators of sewage treatment plants. Dewatering sludge means reducing the quantity of sludge for disposal. Depending on system capacity, 1 percent more dry substance can lead to cost savings in the five- to six-digit range. The dewatering performance of the Flottweg Xelletor Series is significantly better than even its predecessors. It sets new benchmarks for throughflow, dry substance, and polymer and energy consumption. The Xtra in performance at low consumption in comparison with our high-performance C Series: ►Xtra dewatering performance: Up to 10 percent less sludge volume due to higher total dry solids in dewatered sludge ►Xtra polymer savings: Up to 20 percent savings on flocculant consumption ►Xtra capacity: Up to 15 percent more throughflow ►Xtra energy savings: Up to an additional 20 percent energy savings

In small sewage treatment plants, investment costs play a decisive role. In stationary dewatering systems, for example, the construction of a new building can be significantly costly. You can avoid those costs with mobile container systems for sludge dewatering. Container-based solutions are a practical alternative to fixed dewatering installations.. A container is a true "plug and play" option – just connect it and start dewatering. ►Sludge dewatering in a one-man operation: comfort and personal safety, with control of the dewatering installation directly on-site. ►Year-round comfort: raised roof; insulated walls and roof, consistent use of stainless steel. ►Minimized maintenance effort: The roof can be opened by a single person using a manual hydraulic lifting system; the decanter can be opened with a crane built into the container. ►Optimized for operation in the smallest of spaces ►Easy transport with all current truck types

Grinding chips are created by the grinding of metal components. It is a mixture of metal and corundum abrasion in combination with the cutting fl uids being used. By briquetting, the waste is reduced significantly and the briquettes possess a defi ned residual moisture. Thus, the disposal costs are reducedand depending upon the alloy, there is even the opportunity to sell the briquettes with a profit. In most cases, the expensive oil contained in the cutting fl uid can be reused. The briquetting system can already payoff for itself within less than 12 months by processing about 10 to 30 tons of the expensive oil contained in the cutting fl uid per year. Depending on the requirements, our briquetting systems for grinding chips are equipped with hydraulic motors ranging from 4kW to 22kW, and reach a specifi c pressure of up to 3,800 kg/cm². The throughput of the RUF briquetting systems - especially for grinding chips - range from 40 to 350 kg/h.

Honored with the German Innovation Award 2019, the Xelletor series is one of the greatest achievements in the field of sewage sludge. Dewatering sewage sludge is standard for wastewater treatment plants and since it usually has to be transported away, operators have an interest in separating as much water as possible from the sludge. This saves weight and thus reduces costs. Savings of up to 10% in sludge volume and 34% in energy consumption are possible. Our Xelletor high-performance centrifuge inspires customers all over the world with the many years of technical know-how and innovative spirit behind it.

Flottweg has developed a unique centrifuge concept especially for the high-level dewatering of sewage sludge: The Flottweg Xelletor series. For the wastewater treatment plant operator, dewatering offers enormous savings potential. The costs for transport and disposal of dewatered sewage sludge often account for 80% of the operating costs of mechanical dewatering. The dewatering performance of the Xelletor machine is significantly better than that of our predecessor models. And it's setting new standards in terms of throughput, dry substance, and polymer and energy consumption.

Transport and disposal costs, at over 70 percent, represent by far the largest cost item in sludge dewatering. A powerful dewatering assembly is thus an important criterion. With a Flottweg HTS Decanter in the C series, you can achieve the highest possible total dry solids in the dewatered sludge, thereby continuously saving on transport and disposal. More than 50 years of experience in the dewatering of sewage sludge and continuous further development have gone into the design of the Flottweg HTS Decanter. This experience, combined with references from the entire world, makes Flottweg one of the leading providers of mechanical separation technology. The HTS Decanter is attractive for its performance, its efficiency, and its high cost-effectiveness. The decanters in the Flottweg C series cover a throughput range from about 5 to over 150 cubic meters per hour. We can offer you comprehensive know-how and customized systems.

The New C2E Decanter Centrifuges for Small Treatment Plants Flottweg presents a new era of sludge dewatering for small sewage treatment plants. The C2E decanter centrifuge was developed specifically for the dewatering and thickening of smaller sludge loading rates. It features all of Flottweg's know-how in a compact, space-saving design. Over five decades, Flottweg has gathered rich knowledge of the area of sewage sludge thickening and dewatering. That know-how has been transferred into a new generation of environmental centrifuges. Our requirements for the C2E are just as high as for the big Flottweg Decanters. Disposal costs still play a central role, even for small communities. The quality of the machine and its efficiency regarding separation results reduces the overall lifetime costs to a minimum. Want to learn more about our solutions? Then get in touch.

In the process of treating waste water, fine biological sludge is constantly produced during the decomposition process at a sewage treatment plant. For a stable decomposition process in the biological treatment phase, the sludge produced in the secondary sedimentation pond, also known as excess sludge, is removed and fed into the digestion tower. Flottweg's OSE decanters thicken the sludge before it enters the digestion tower. Sewage treatment plants benefit from an even feeding of the digestion tower and can thus optimally use the volume of the digestion tower. The Flottweg OSE decanter is specially designed for sludge thickening. ► Highest gas yield through constant feeding of the digestion tower ► Best possible thickening even with changing feed conditions ► Larger sedimentation volume (due to deep pond and steep cone) enables highest power density (10 - 20 percent) with minimum space requirement

Like all machine sizes in our C series, the C5E is also equipped with optimum wear protection. This reduces maintenance costs, as only wear parts need to be replaced. At the same time, this ensures a longer service life and high machine availability. The Flottweg features Recuvane® and Simp Drive® make the simple, efficient and individual operation of the centrifuge perfect.

Proven know-how meets state-of-the-art technology. This is the best way to describe the new Flottweg decanter C series. We also have the optimal solution for the very large wastewater treatment plants. The combination of our own Simp Drive® drive system, which has been in use since 1994, and Recuvane®, which allows flexible and simple retrofitting as well as targeted discharge of the centrate water, sets new standards for Flottweg in separation technology.

This new decanter series combines the latest know-how in manufacturing, design and engineering with decades of experience. Thus, with the C4E environmental centrifuge, we offer an optimal solution for medium-sized wastewater treatment plants for which quality, reliability and a good price-performance ratio are important.

Flottweg C series decanters around the world process 25 million liters of sewage sludge per hour. The dewatering and thickening of sewage sludge plays a decisive role in the wastewater treatment process. Requirements for the quality and efficiency of sewage treatment plants increase year after year, not least driven by the increasing costs of energy and disposal. As a result, the state of the art is now to use decanter centrifuges to dewater and/or thicken the incoming sludge. Flottweg developed the decanters of the C series especially for this purpose. The C7E represents the largest of all the C machines. The C7E increases the proportion of dry substance in the sludge, thereby reducing its volume and weight (due to loss of water). That means that operators need to dispose of, recycle, or burn less sludge. The result: enormous potential savings for the operators of sewage treatment plants.

We know the special requirements of the wastewater industry. Flottweg therefore decided to create a new decanter series solely manufactured for sludge separation, called the Flottweg C Series.

Transporting recycling materials presents particular challenges for conveyor technology. The spiral conveyors for recycling materials need to be able to withstand materials with very different properties, unlike when transporting raw materials in industrial production processes or homogenous material such as granulates or pellets. In addition, the sturdiness in regards to environmental influences cannot be underestimated as a decisive factor for the longevity of the conveyor system as a whole.