MULTI-DISC SCREW PRESS DEHYDRATOR MDQ TSURUMI s TEEBORG Dehydrator with original condensation and dehydration processes giving highly efficient dehydration TEEBORG is the abbreviation of pump with changeable driver Tsurumi s TEchnology for Environment re-circulating ebullient ORGanisms Towards a global company giving the utmost priority to the environment
SPECIAL FEATURES Easy to Install + Energy Saving As Tsurumi TEEBORG dehydrator is the unit that carries related equipment and the control panel compactly, it is easy to install. It is also energy saving because of its low output. Processing of the oil-containing sludge is possible. As the structure is such that it is hard to be plugged up in the screen, it is suitable for processing oil-contained sludge such as dissolved-air flotation froth. Processing of low concentration sludge is possible. Since it is the structure of having both condensation and dehydration section, it is possible to process low condensation sludge (about 0.3%), which was difficult by the conventional dehydrators. Continuous automatic operation is possible Automatic operation can be done by one-touch operation. Amount of washing water can be minimum. Wash-water is necessary only for the cleaning of sludge that seeps out of the bowl. The volume of water consumed is the minimum. Minimum secondary pollution + minimum maintenance Since dehydrator itself is operated at low-speed rotation, there will be almost no fear for the noise pollution. At the same time, it is almost no need to carry out daily maintenance work because it operates automatically. OPERATING PRINCIPLE TEEBORG dehydrator has a bowl (casing) that comprises of fixed discs and movable discs which are placed one another with a certain clearance. Inside of the bowl is a screw shaft. There are support frames that support this multiple structures. A dam plate is provided at the end of the screw shaft. A movable disc inner periphery rubbing system that enabled to give highest efficiency possible Fixed Disc Movable Disc Dam Plate Dehydration Part Fixed Disc Movable Disc Condensation Part Screw Shaft Inflow Support Frame Cake Support Frame Filtrate Movable Disc Fixed Disc Movable disc inner periphery rubbing system As the inner periphery of each movable disc is touched with the outer periphery of the screw blade that let the discs rotate, the movable discs always move, and this cleans the clearance that filtrate passes through. Therefore, it prevents the clearances from plugging up and shows stable treatment capacity. Dehydration Process The sludge, which is conveyed by the screw, is compressed consecutively since the screw pitch is narrowed toward the advanced direction. The sludge is then discharged after being compressed further by dam plate that is installed at the end of the bowl. Condensation Process As for the flocculated sludge that flowed into the dehydrator, its most of the water is discharged outside of the machine by gravity filtration through the clearances (the gap between fixed disc and movable disc) of the multiplex structure bowl.
FLOW CHART The sludge is transported to the sludge feed tank of the main unit by a sludge conveying pump (non-accessory) installed in the sludge tank. It is then supplied to the upper measuring tank after equalizing the density by the mixing pump of the sludge feed tank. The sludge that entered the measuring tank moves to the coagulant mixing tank, but only the predetermined amount of sludge flows into the coagulant mixing tank by the gravity. (A part of excessive supply is sent back to the sludge feed tank through an overflow pipe.) The sludge that is flocculated in the coagulant mixing tank flows into the dehydrator main unit. After being condensed and dehydrated continuously, the sludge is transformed into a sludge cake and is discharged outside. In order to let the unit corresponds to various sludge characteristics, it is devised that three types of coagulant (two types of polymeric coagulant and an inorganic coagulant) can be utilized with the equipment. Outside the box shows non-accessory. Inside the box shows option. Coagulant Mixing Tank Mixer Measuring Tank Polymeric Coagulant 1 Supply Pump Polymeric Coagulant 1 Dissolution Equipment (Option) Flush Valve Dehydrator Main Unit Coagulant Mixing Tank Polymeric Coagulant 2 Supply Pump Filtrate Polymeric Coagulant 2 Dissolution Equipment (Option) Cake Inorganic Coagulant Tank Drain Feed Tank Mixing Pump Feed Tank Supply Pump Conveying Pump Tank
APPLICATIONS Excess sludge of the biological treatments Dissolved-air flotation froth Condensation precipitation sludge Various mixed sludge SPECIFICATIONS Model Treating Capacity (kg-ds/h) Motor Output (kw) Screw Shaft Dimensions (mm) Weight (kg) (Dia. mm x No. of Screws) Length Width Height Dry Operating MDQ-101 3-6 0.6 φ100 x 1 1800 900 1800 400 1000 MDQ-102 6-12 0.7 φ100 x 2 1800 900 1800 500 1150 MDQ-103 9-18 1.0 φ100 x 3 1850 1100 1800 700 1550 MDQ-104 12-24 1.25 φ100 x 4 2100 1500 2050 900 1950 MDQ-105 15-30 1.35 φ100 x 5 2100 1500 2050 1000 2100 MDQ-201 9-18 1.05 φ200 x 1 2650 1200 2050 700 1600 MDQ-202 18-36 1.25 φ200 x 2 2650 1200 2050 900 1900 MDQ-203 27-54 1.8 φ200 x 3 2650 1500 2050 1200 2550 MDQ-204 36-72 2.35 φ200 x 4 2800 2100 2050 1600 3550 MDQ-205 45-90 2.9 φ200 x 5 2800 2100 2050 1800 3850 The treating capacity will vary depending on the characteristics and the density of the sludge. The sludge that can be handled shall be an organic sludge having the ignition loss (VTS = Volatile Total Solids) of more than 60% and the concentration (TS) of 0.5 to 2.0%. The motor output shows the total output of the motors built-in the dehydrator itself. The other equipment such as, sludge transferring pump or chemical feed equipment, etc is not included. The sludge transferring pump, chemical feed equipment and the chemical feed pump etc are options. Specifications of Liquefied Coagulant Dissolution Equipment (Option) Model Dissolution Capacity (L/h) Motor Dimensions (mm) Weight (kg) Output (kw) Length Width Height Dry Operating TKY2-360 360 0.17 845 810 1040 130 320 TKY2-720 720 0.3 985 910 1300 170 540 The Dissolution Capacity may vary depending on the volume of water supply from outside, type of coagulant, and conditions of the dissolution. Liquefied polymeric coagulant is available as option at Tsurumi.
MULTI-DISC DEHYDRATOR ND / DS Efficient Dehydration by Gravity-Filtration and Capillarity Features Compact design and energy-saving Wide range of applications Automatic continuous operation Low wash-water consumption Environmentally friendly and Longer maintenance cycle ND-series DS-series Excess sludge at a sewage treatment plant DAF froth at a food factory s WWTP Towards a global company giving the utmost priority to the environment
ND / DS Series Multi-Disc Dehydrators Dewater organic sludge by the Multi-Disc system, and enables highly efficient collection of solids with lower energy consumptions. SPECIAL FEATURES Compact design and energy-saving Gravity-filtration and Capillarity are the basic design concepts of the product. It is compact and does not require much space, and also it operates with low energy consumption. The ND-series needs less space than DS-series by 30% and can be mounted on a truck. Wide range of applications The product can handle the sludge with its concentration from 1.0 to 5.0%. It can be extensively used for the DAF (Dissolved-Air Floatation) froth which a filter type or a centrifuge is hard to handle. Automatic continuous operation One-touch automatic operation is available. By combining an automatic continuous coagulant dissolution equipment, fully unattended continuous operation is possible. Low wash-water consumption The product has an automatic flushing system. But as there is little risk of clogging in the slits between discs, the flushing interval of once (about 7 minutes) every 1 to 3 hours of operation will be enough. The required volume of wash-water is far less than those required by filter type dehydrators. Environmentally friendly and Longer maintenance cycle Since the unit is semi-closed type and the rollers rotate at a very low speed, it does not scatter the sludge. Operating noise and vibration are extremely low, and malodor spreading is minimum. There are few wearing parts used in the unit, and replacement parts are needed once every 30000 to 50000 hours of operation. OPERATING PRINCIPLE A number of filtering rollers, each of which consists of a stainless steel shaft and multiple thin discs, are placed in two rows, upper and lower, in the main unit. The rollers close to the sludge inlet form the filtration section, and the rollers closed to the outlet form the dehydration section. Flow of filtrate Flow of flocculated sludge As the incoming flocculated sludge travels through the filtration section, only the filtrate passes through the slits between discs and flows through holes opened in the direction of the roller shafts and to be discharged from the filtrate outlet located on the side of the unit. The sludge, condensed at the filtration section, is transferred by filtering rollers to the dehydration section where it is additionally dewatered by the increased compression, as the rollers are aligned in such a manner that their gaps may become narrower as the sludge advances. As the rollers rotate at a very low speed, the sludge goes without being kneaded or exposed to unnecessary stress like other dehydrators.
FLOW CHART The sludge is transferred to the flocculation tank via a sludge supply pump (a metering pump with variable flow-rate, to be prepared by client) from a sludge tank (also to be prepared by client). A polymeric coagulant is added to the sludge in the flocculation tank, and the sludge is transformed into flocs. The flocculated sludge overflows from the tank and goes into the dehydrator main unit, and then it will be discharged outside as a sludge cake after dehydration. The product can be applied to the dehydration of sludge having various characteristics by utilizing the combination of polymeric coagulant 1 and coagulant 2. In addition, the liquefied polymeric coagulant dissolution equipment automatically dissolves the coagulant to a density that corresponds to the ullage of the dissolved coagulant, thus supporting the continuous and stable operation of the dehydrator. Coagulant 1 Supply Pump Polymeric Coagulant 1 Dissolution Equipment (Option) Flocculation Tank Mixer Cake Dehydrator Main Unit Coagulant 2 Supply Pump Flocculation Tank Polymeric Coagulant 2 Dissolution Equipment (Option) Drain Filtrate Motor for Dehydration Section Motor for Filtration Section Flushing Pump Flushing Water Tank Filtrate Outside the box shows non-accessory. Inside the box shows option. This flow chart shows that of the dehydrator for two coagulants. Supply Pump Tank MOBILE DEHYDRATOR The mobile dehydrator is ideal for a joint operation by plural numbers of small treatment plants in rural area. Truck Dehydrator Other Equipment 4-ton Capacity Truck Roller width 750 mm Supplying Equipment Coagulant Supplying Equipment Flushing Water Tank Filtrate Transfer Equipment Generator
ND SPECIFICATIONS Height Length Width Model Treating Capacity (kg-ds/h) Motor Output (kw) Width of Filtering Rollers Dimensions (mm) Length Width Height Weight (kg) Dry Operating ND-251B 6-20 2.3 250 1736 1080 1597 1150 1300 ND-501B 12-40 3.35 500 1766 1330 1659 1650 1900 ND-751B 18-60 6.0 750 1866 1614 1689 2050 2400 ND-1001B 24-80 6.0 1000 1866 1913 1689 2450 2900 The treating capacity varies depending on the characteristics and concentration of sludge. Treating rate (kg-ds/h) = treating rate (m 3 /h) x 1000 (kg/m 3 ) x concentration (%) General guide for treating rates per 1000mm s width filtering roller; 40kg-DS/h for excess sludge, 50kg-DS/h for sewage treatment sludge, 60kg-DS/h for DAF froth and livestock waste sludge. It is suggested that model selection be made with an adequate allowance. The motor output indicates the total output of the motors mounted in the unit. Peripheral equipment outside main unit is not supplied. A coagulant mixing equipment is available as option. DS The DS-series is available in two types. The models having 1 at the final digit of the model number are the products that handle single type of polymeric coagulant. The models having 2 are those that handle two (2) types of polymeric coagulant. Length Height Width Model Treating Capacity (kg-ds/h) Motor Output (kw) Width of Filtering Rollers Dimensions (mm) Length Width Height Dry Weight (kg) Operating DS-251B DS-252B 6-20 2.95 [3.15] 250 2084 1065 1801 1690 [1710] 1870 [1950] DS-501B DS-502B 12-40 4.12 [4.32] 500 2223 1315 1882 2130 [2160] 2430 [2560] DS-751B DS-752B 18-60 6.90 [7.10] 750 2297 1607 2015 2500 [2530] 2900 [3080] DS-1001B DS-1002B 24-80 6.90 [7.10] 1000 2307 1907 2015 2840 [2860] 3340 [3560] The treating capacity varies depending on the characteristics and concentration of sludge. Treating rate (kg-ds/h) = treating rate (m 3 /h) x 1000 (kg/m 3 ) x concentration (%) General guide for treating rates per 1000mm s width filtering roller; 40kg-DS/h for excess sludge, 50kg-DS/h for sewage treatment sludge, 60kg-DS/h for DAF froth and livestock waste sludge. It is suggested that model selection be made with an adequate allowance. Figures in [ ] show the data of the models for 2 types of coagulant. The motor output indicates the total output of the motors mounted in the unit. Peripheral equipment outside main unit is not supplied. A coagulant mixing equipment is available as option.