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Pre-thickening Sludge dewatering machine

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Dawei DW series screw type sludge dehydrator is a new type of filter press.

Product Category

Sludge dewatering machine

key word:

Pre-thickening Sludge dewatering machine
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Detailed Description

① Overview of DW screw type sludge dehydrator

叠螺式污泥脱水机

Product Structure Analysis
1 Flocculation mixing tank 2 Concentration and dewatering main body 3 Filtrate outlet
4 Catch basin base 5 Export of demineralized cakes  
Dawei DW series screw type sludge dehydrator is a new type of filter press. Compared with the traditional belt filter press and plate and frame filter press, its unique mechanical structure gives it the advantages of small floor area, non clogging, automatic unattended operation, no need for sedimentation tank and sludge thickening tank, etc. The closed design can also greatly improve the on-site operation environment. The drive motor adopts a low-speed high torque gear reducer, which has lower energy consumption and noise compared with the centrifuge. At present, the screw type sludge dehydrator has been widely used in papermaking, petrochemical, food and beverage, printing and dyeing textile, municipal, livestock and poultry breeding, new materials, aquaculture, mechanical processing and other industries.
 
② Brief introduction to the main structure and principle of concentrated dehydration of snails
叠螺式污泥脱水机
Product Structure Analysis
1 Dehydration section 2 Concentrated section 3 Sludge input
4 Dehydrated mud cake 5 Back pressure plate 6 Filtrate
The screw type sludge dehydrator is specially designed for treating low concentration sludge and oily sludge. It follows the principles of force and water in the same direction, thin layer dewatering, proper pressure application and extended dewatering path. It solves the technical problems of previous generations of sludge dewatering equipment, such as easy blockage, inability to treat low concentration sludge and oily sludge, high energy consumption and complex operation, and achieves the goal of high-efficiency and energy-saving dewatering.
When the equipment is running, the sludge enters the filter cartridge from the feeding port and is pushed to the discharge port by the spiral shaft blades. As the screw pitch between the spiral shaft blades gradually decreases, the pressure on the sludge also increases, and the sludge begins to dehydrate under the effect of differential pressure. The water is self-cleaning between the fixed ring and the movable ring, and the filtering gap is cleaned to prevent blockage, The mud cake is fully dehydrated and discharged from the discharge port under the propulsion of the spiral shaft.
 
③ Technical Description and Installation Process Flow of Screw Stacker
叠螺式污泥脱水机
Installation Process
1 Sewage pumped into metering tank 2 Dosing flocculation mixing 3 Concentration and dewatering of alum after flocculation
4 The thickened sludge enters the dewatering section 5 Mud cake discharge after dewatering  
 
④ Refer to the list of specifications and types of stacked bolts
Model External dimensions Net weight Operating weight Power Washing water consumption
L W H
DW-131 1920 750 989 205 300 0.2 20
DW-132 1920 910 989 270 420 0.3 44
DW-201 2460 860 1270 340 490 0.74 30
DW-202 2480 960 1270 460 720 1.11 60
DW-301 3360 930 1650 900 1310 1.5 38
DW-302 3560 1245 1650 1320 2100 2.25 76
DW-303 3820 1600 1650 1780 2840 3 114
DW-351 4010 1150 2200 1630 2230 1.1 68
DW-352 4210 1550 2200 2350 3450 2.75 136
DW-353 4420 2150 2200 3360 4860 5.7 204
DW-354 4640 2650 2200 4480 6080 9.55 272
DW-401 4560 1250 2400 2400 3300 1.85 78
DW-402 4900 1620 2400 3460 5180 2.95 156
DW-403 5030 2200 2400 4500 7000 4.05 234
DW-404 5300 3180 2400 6500 9610 5.15 312

 

Model Chemical precipitation of excess sludge from raw water Scum pressurized floating sludge Mixed sludge Aerobic digestion Sludge Municipal sludge
Sludge concentration (TS) 0.2% 1.0% 2.0% 5.0% 3.0%
DW-131

~4kg-DS/h

(~2.0m3/h)

~6kg-DS/h

(~0.6㎡/h)

~10kg-DS/h

(~0.5㎡3/h)

~20kg-DS/h

(~0.4㎡3/h)

~26kg-DS/h

(~0.87m3/h)
DW-132

~8kg-DS/h

(~2.0㎡/h)

~12kg-DS/h

(~1.2㎡/h)

~20kg-DS/h

(~1.0m/h)

~40kg-DS/h

(~0.8㎡3/h)

~52kg-DS/h

(~1.73m3/h)
DW-201

~8kg-DS/h

(~4.0㎡/h)

~12kg-DS/h

(~1.2㎡/h)

~20kg-DS/h

(~1.0㎡/h)

~40kg-DS/h

(~0.8㎡/h)

~52kg-DS/h

(~1.73㎡/h)
DW-202

~16kg-DS/h

(~8.0㎡/h)

~24kg-DS/h

(~2.4㎡/h)

~40kg-DS/h

(~2.0㎡/h)

~80kg-DS/h

(~1.6㎡/h)

~104kg-DS/h

(~3.47㎡/h)
DW-301

~20kg-DS/h

(~10㎡/h)

~30kg-DS/h

(~3.0㎡/h)

~50kg-DS/h

(~2.5㎡/h)

~100kg-DS/h

(~2.0㎡/h)

~130kg-DS/h

(~4.33㎡/h)
DW-302

~40kg-DS/h

(~20㎡/h)

~60kg-DS/h

(~6.0㎡/h)

~100kg-DS/h

(~5.0㎡/h)

~200kg-DS/h

(~4.0㎡/h)

~260kg-DS/h

(~8.67㎡/h)
DW-303

~60kg-DS/h

(~30㎡/h)

~90kg-DS/h

(~9.0㎡/h)

~150kg-DS/h

(~7.5㎡/h)

~300kg-DS/h

(~6.0㎡/h)

~390kg-DS/h

(~13㎡/h)
DW-351

~40kg-DS/h

(~20㎡/h)

~60kg-DS/h

(~6.0㎡/h)

~100kg-DS/h

(~5.0㎡/h)

~200kg-DS/h

(~4.0㎡/h)

~260kg-DS/h

(~8.67㎡/h)
DW-352

~80kg-DS/h

(~40㎡/h)

~120kg-DS/h

(~12㎡3/h)

~200kg-DS/h

(~10㎡/h)

~400kg-DS/h

(~8.0m/h)

~520kg-DS/h

(~17.3㎡/h)
DW-353

~120kg-DS/h

(~60㎡/h)

~180kg-DS/h

(~18㎡/h)

~300kg-DS/h

(~15㎡/h)

~600kg-DS/h

(~12㎡/h)

~780kg-DS/h

(~26㎡/h)
DW-354

~160kg-DS/h

(~80㎡/h)

~240kg-DS/h

(~24㎡/h)

~400kg-DS/h

(~20㎡/h)

~800kg-DS/h

(~16㎡/h)

~1040kg-DS/h

(~34.68㎡/h)
DW-401

~70kg-DS/h

(~35㎡/h)

~100kg-DS/h

(~10㎡/h)

~170kg-DS/h

(~8.5㎡/h)

~340kg-DS/h

(~6.5㎡/h)

~442kg-DS/h

(~16㎡/h)
DW-402

~135kg-DS/h

(~67.5㎡/h)

~200kg-DS/h

(~20㎡/h)

~340kg-DS/h

(~17㎡/h)

~680kg-DS/h

(~13.6㎡/h)

~884kg-DS/h

(~29.5㎡/h)
DW-403

~200kg-DS/h

(~100㎡/h)

~300kg-DS/h

(~30㎡/h)

~510kg-DS/h

(~25.5㎡/h)

~1020kg-DS/h

(~20.4㎡/h)

~1326kg-DS/h

(~44.2㎡/h)
DW-404

~266kg-DS/h

(~133㎡/h)

~400kg-DS/h

(~40㎡/h)

~680kg-DS/h

(~34㎡/h)

~1360kg-DS/h

(~27.2㎡/h)

~1768kg-DS/h

(~58.9㎡/h)
 
The above treatment capacity is a reference value. According to different sludge properties, the treatment capacity may vary. For details, please consult our technicians when selecting the type.
The above treatment capacity refers to the reference value when the moisture content of sludge cake after dehydration is below 85%.
There is no upper limit for sludge concentration, but the premise is that it must have fluidity.
The treatment capacity of scum and pressurized air flotation sludge is aimed at the sludge with high oil content such as meat processing plants.
The precondition for the treatment capacity of mixed sludge and aerobic digested sludge is that the content of cellulose (200mesh) in sludge is more than 30%.
 
 Note: This product supports customization. You can call our company for consultation during model selection. The hotline is 400-876-5650
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Standard Non-standard customized type

Exquisite and beautiful design, stainless steel body with longer service life

Integrates flocculation, concentration, filtration and extrusion dewatering functions

Modular structure makes it easy to maintain

At the same time its flexible design and production to meet the needs of more different environments.
 
 
⑤ Details of Dawei's stacked snails
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We strictly control the quality of each ring piece to ensure that the equipment can run safely and smoothly for a long time
 
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We will use first-line brand reducer motor and electrical components, stainless steel gaskets, spiral shaft after supersonic tungsten carbide wear-resistant coating

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