multi-disk screw press dehydrator ekoton tsurumi

SIZE OF WWTP 2000 m3/day (528 300 GPD)
END USER Northern Hungary regional water and wastewater utility provider, ÉRV Zrt.
CUSTOMER INWATECH Kft.
START OF OPERATION December, 2014

Issue

The client had frequent maintenance issues with their belt-filter press, therefore they decided to change it during the general reconstruction of WWTP. However, no belt-filter press manufacturer could guarantee more than 18 % DS content of sludge cake.

Solution

EKOTON performed on-site pilot tests with a small MDQ model and achived 18.5-20 % cake DS content. The client was satisfied with the results and decided to purchase our equipment. Based on the required dewatering capacity, one unit of MDQ-353 C was installed. Previously installed belt-filter press is stored as a metal scrap in the territory of WWTP.

Results

Type of sludgeWaste activated sludge from SBR
Unit Sludge Supply12-18 m3/h (53-80 GPM)
210-230 kg DS/h (463-507 lb DS/h)
Feed Sludge DS Concentration1-2 %
Cake DS Concentration18-22 %
Operation Time10 h/d
Average Polymer Dose4-6 g/kg DS (8-12 lb/ton DS)
Unit Daily Power Consumption25 kW*h

End User’s Comment

Since the comissioning, the performance of EKOTON multi-disc screw press dehydrator MDQ-353 C has been stable and with no issues. With an average feed DS content of 1 %, the cake DS content is 18-22 % while maintaining the required filtrate quality. Control cabinet is equipped with a touch screen which enables setting operational parameters both for the dehydrator and a sludge pump. Operation of the dehydrator is fully automatic, therefore it requires no attention of an operator. Besides beeing almost noiseless, the performance is also reliable and faultless. Over 3-year operation period, only wash water hoses have once been replaced.