Pre-thickening Screw Press Sludge Dehydrator is widely used for lower consistency sewage wastewater and is composed of thickening part & dehydration part. The consistency range can be from 2500 mg/L to 20000 mg/L.
|Type||RDL404||Dry Sludge(DS) treating capacity||400-640kg/h|
|Solid content||2500-20000mg/L||Output sludge moisture content||75-85%|
According to customer's requirement
|Motor protection level||IP55 F|
|Net weight||7500kg||Operating weight||12900kg|
|Energy consumption of the whole machine|
|Water consumption||320L/h||Water supply pressure||0.1-0.2MPa|
|Flocculant consumption||2-8g-PAM/kg-DS, when the concentration of PAM is 0.1-0.2%|
(PAM means Polyacrylamide)
|Detailed list of pipeline connection|
|Pipe port for sludge inlet||DN100 Flange Connection PN1.0Mpa JB/T81-94|
|Pipe port for filtrate outlet||DN200 Flange Connection PN1.0Mpa JB/T81-94|
|Pipe port for return flow||DN150 Flange Connection PN1.0Mpa JB/T81-94|
|Pipe port for sewage outlet of mixing tank||DN65 Flange Connection PN1.0Mpa JB/T81-94|
|Pipe port for filtrate outlet of mixing tank||DN150 Flange Connection PN1.0Mpa JB/T81-94|
|Pipe port for flushing water inlet||DN50 Internal Thread Connection G3/4"|
|Pipe port for polymer inlet||DN50 External Thread Connection G1"|
|Electric control panel||SS304/SS316/SS2205|
1. The electronic control system can be customized according to customers'requirements.
It can add PLC and communication module.
|2. For detailed information and drawings, please contact our engineer.|
Pre-thickening Screw Press Sludge Dehydrator adds pre-thickening system on the basic of multi disc screw press.
It is widely used for lower consistency sewage wastewater and is composed of thickening part & dehydration part.
The consistency range can be from 2500 mg/L to 20000 mg/L, thus the investment can be reduced a lot. It is professional interated thickening & dewatering sludge dehydrator.
Multi disc screw press which uses the screw extrusion principle is a new type of solid-liquid separation device.
It reaches the goal of extrusion dewatering sludge by the powerful extrusion pressure of changing the screw diameter and distance, and the tiny spacing between moveable annular plates and fixed annular plates.
Sludge will be transported to the dewatering department after being thickened in the thickening department.
In the advancing process, great pressure has been produced because of the gradually decreasing filter spacing and screw distance, and the back platen clogging.
Then the volume decreases continously, and the purpose of fully dewatering will be achieved.
|The main body of the Multi disc screw press is made of multiple fixed annular plates and moveable annular paltes with the screw shaft running through it. |
The front part is thickening department and the ending part is dewatering department.
It can thicken and dewater sludge in one box, and has taken place of traditional filter clothes and centrifugal filtration method for its distinctive filter model.
The pre concentration system is composed of the pre-thickening system, the mixing blades and the thickening tank.
The mixing system is used to make the sludge and polymer fully mixed in the thickening tank.
The sludge can be flocculated to be gathered together, meanwhile, some of the water will be filtrated in the pre-thickening system due to the gravity function.
The formed flocs will be transported to the screw body to press and dewater.
There are sludge inlet, overflow port, polymer feed port and vent nozzle in mixing tank. Also there is the level adjusting device to adjust the sludge inleting amount.