Contributing to snowy regions in which the transportation of sludge is difficult

Sewage Treatment Plant


In municipal wastewater treatment plant in snowy regions, snow-bound in winter, taking dewatered cake out regularly is sometimes difficult. Two problems were also presented in this municipal wastewater treatment plant, i.e., the difficulty of taking sludge out using carriers in winter, which had been anticipated from the planning stage of construction; and the need for reducing the number of sludge transportations by cutting the amount of sludge to be taken out, following prefectural policy.

AMCON's offer for a solution

To solve these two problems, we proposed constructing a dewatering and drying system using the VOLUTE™ Dewatering Press and the Solapy drier, which was then introduced. The cake dewatered with the Volute Dewatering Press is fed consecutively into the Solapy drier, and discharged as dried sludge with a water content of about 40%. With this drying process, the volume of sludge is reduced to about 1/4 of the dewatered cake, and the amount of sludge to be taken out can be significantly cut. Since dried sludge does not rot easily, long-term storage causes no foul odors, and the problem of the limited number of transportations in winter has been solved. The sludge is sent to a compost center, in which the dried sludge is utilized as moisture conditioners.

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Dewatering low-concentration sludge

Manufacturing Plant of Synthetic Fiber Materials in Indonesia


Before installation of VOLUTE™ Dewatering Press, they threw cake into their dryer after dewatering by their belt press . Drain of Synthetic Fibers purified from oil was not suitable for micro-organisms and was low MLSS. In addition , sludge concentration from thickening tank was quite low(6,000mg/L). So, Water content in Sludge cake became 92% by belt press machine. Because of throwing the soft sludge like Tofu, the load was pretty high.

AMCON’s offer for a solution

Since VOLUTE™ Dewatering Press adopted the unified structure that serves two functions, thickening and dewatering in the single machinery, the low concentration sludge can be dewatered. The drum filter, because of the clog-free, realizes higher speed of filtering phenomena per filtering area as compared to the methods, and the sludge is instantly thickened by gravity. They can constantly throw sludge into the dryer by installation of VOLUTE™ that can keep 85 % of water content so easily.

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Dewatering of oily sludge without clogging

Chicken processing plant in Ukraine


The chicken processing plant in Ukraine had a big issue on tremendous amount of sludge disposal costs due to direct disposal of the sludge without dewatering. They had tried to look for a suitable sludge dewatering equipment for easy dewatering of the oily sludge, however it was almost impossible to find.

AMCON's offer for a solution

The customer installed ES-303 model understanding of the advantage of VOLUTE™ Dewatering Press; high resistance to oily sludge.
Customer’s comment: “We used to hesitate to install dewatering equipment due to anxiety for problems such as clogging and frequent maintenance of equipment for dewatering of oily sludge. However we are surprised at the fact that VOLUTE™ hardly has clogging. The full automatic operation is very helpful for easy management. The water content in sludge cake is as good as 71.5%, which is the performance of the VOLUTE™ Dewatering Press we are greatly satisfied with. We really realize that the installation of VOLUTE™ is the best choice we made.”

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