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High Speed Industrial or Urban Sewage Wastewater Centrifugal Machine

Categories Wastewater Centrifuge
Brand Name: WP/XBSY
Model Number: LWS
Certification: ISO9000
Place of Origin: CHENGDU,CHINA
MOQ: 1 UNIT
Price: Negotiable
Payment Terms: L/C, T/T
Supply Ability: 30 UNITS/MONTH
Delivery Time: 2-3months
Packaging Details: iron support frame
Material: SS304 or 316/2205
Motor voltage: 380/460V
Motor frequency: 50/60Hz
Advantage 1: High rigidity screw rotor technology
Advantage 2: Double-motor double-frequency
Application: Wastewater Containing Oil
Warranty: one year
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High Speed Industrial or Urban Sewage Wastewater Centrifugal Machine


High Speed Industrial or Urban Sewage Wastewater Centrifugal Machine


Water Treatment field


The impurities such as glass and braids in the biochemical sludge from the sludge tank is pulverized and removed. The sludge pump sends the sludge (concentration 0.5~4% or higher) into the centrifuge, and the fully automatic flocculant dosing device adds continuously PAM flocculant solution (concentration 1~3‰) into the feed pipe through the dosing pump for flocculation in the feed pipe and in the vicinity to produce flocculus to be sent into the centrifuge. The dehydrated mud cake is discharged from the drum by a centrifuge, and transported to the outside through the screw conveyor.


The dehydration system is widely used for oxidation ditch, AB, A/O, A2/O, SBR, MBR, anaerobic fermentation, and other processes, as well as urban domestic sewage, municipal sewage, landfill leachate, urban tap water, purified water, and some industrial wastewater of conventional sewage treatment processes. Solid-liquid separation is achieved by a high-performance DE type two-phase high-efficiency centrifuge.


Modern water purification and sewage treatment processes, increasingly strict emission standards, and subsequent treatment of dewatered mud cakes, whether stacked, dried or incinerated, have set higher requirements for key equipment of excess sludge treatment.


For water purification plants, sewage treatment plants, high-performance water treatment dedicated decanter centrifuge is an ideal equipment, It highly adapts to the sludge features, but also has a greater process capacity to handle at low concentrations (SS 0.5 %) case without thickener/concentrator to meet the process aim of concentration and dewatering



II. Technical characteristics of the centrifuge


Not only equipment manufacturer but also system engineering service provider With strong technical strength and rich engineering experience, we are fully qualified for the turnkey project of the sludge dewatering room. We are also willing to recommend the design layout of the sludge dewatering room for owners and design institutes.


Eddy current type spiral outlet

The outlet of the screw conveyor adopts a vortex type to accelerate the entry of materials into the rotating drum, thereby reducing the disturbance of the discharged materials to the formed solid phase layer and improving the processing capacity. In the industry of flocculant, it can effectively reduce the shearing effect of the discharge hole on the floccules under the high-speed discharging state, so as to reduce the consumption of chemical agent.


BD board technology

The screw conveyor adopting BD board technology is the most advanced for reducing the water content and improving the solid recovery rate of activated sludge (organic matter ≥ 40%). The technology has the following advantages:

• Increase the depth of the liquid layer, the effective settlement area, and the processing capacity of the centrifuge;

• Reduce the moisture content of the sediment under the action of spiral high-pressure extrusion;

• Improve solid recovery rate and make the clear liquid clearer;

• Save the consumption of chemical agent and cut down equipment operating cost;

• Compared with the common centrifuges of the same separation performance, it is lower in operating speed and requires less power consumption.


More economical in equipment investment and later-stage operation

Goal: Minimum equipment operation, maintenance and repair costs;

We are committed to creating the best quality and most cost-effective China-made centrifuge brand. We recognize that stable operation of equipment is the guarantee of greater benefits for customers, and outstanding suppliers and modern processing equipment are the basic guarantee for quality centrifuges. Advanced and unique technology is the guarantee to reduce operating cost, in addition to high-quality wear resistance, eddy current type spiral outlet, circular arc slag outlet, special spiral structure, advanced electrical control technology, etc.


High performance wear-and corrosion-resistant cemented carbide

There are inevitably small hard particles and impurities such as sand, glass, and metal in sewage. If the centrifuge does not adopt a reliable wear-resistant configuration, its service life and operational stability will be greatly affected. The wear-resistant solution is completely targeted. According to the material characteristics (pH value, corrosive substance, solid particle size hardness, etc.), cemented carbide or ceramic can be selected, and the cemented carbide can be either YG6, YG8, or various modified tungsten-cobalt alloys with the hardness of 89~93 (HRA), which can fully meet the application fields of the centrifuge.


Reduce the moisture content of the sediment under the action of spiral high pressure extrusion


High performance stainless steel

Because the sewage contains some corrosive ions or substances, to ensure the stability and the service life of the centrifuge, AISI321, AISI316, AISI316L or duplex stainless steel SAF2205 with high strength and corrosion resistance are used.


High-dryness screw conveyor and drum structure

The dehydration of solid particles relies mainly on strong centrifugal force, high-torque screw extrusion force (pushing torque), and ultra-long solid particle dehydration length. The centrifuge can generate centrifugal force exceeding thousands of G, 30 ~ 50% higher than the screw pushing torque of common centrifuges. The screw pusher torque, and the drum dehydration length is 10 ~ 20% longer than that of common centrifuges.


High torque involute planetary gear differential

The ultra-high pushing torque requires a high-torque involute planetary gear differential as the foundation. The differential equipped on the centrifuge features high torque, high speed, low heat generation, and excellent heat dispersion, which ensure that the centrifuge can be used for a long time and stably.


CIP washing system

The fully automatic control system is equipped with a CIP washing system, which can effectively solve the problem that it is not completely cleaned during the shutdown process and effectively avoid the equipment troubles caused by artificial factors.


Humanized centrifuge configuration

1.Spiral bearing (in the drum, concealed) lubrication technology: the lubricant is filled from the outside of the hood.


2,The hood adopts a hinged opening structure and is equipped with a high-pressure gas strut to assist the opening.

Variable pitch technology


Variable pitch technology is a relatively advanced technology in the world. It can effectively reduce the screw pushing torque, improve the processing capacity, and further reduce the sediment water content.


High rigidity screw rotor technology

Decanter centrifuge is a typical high-speed rotating device with different speeds and two rotors. The rigidity of the screw rotor directly affects the stability and safety of the equipment. Through theoretical analysis and calculation, the working speed of the high-rigidity screw rotor is far from the first-order and second-order critical speeds, which can avoid the resonance state at high speed.


Double-motor double-frequency conversion common DC bus

The main and ancillary motors of the centrifuge are controlled by a high-performance vector inverter. The ancillary motor is always in the generator state under the differential speed. The inverter adopts common DC bus technology. The auxiliary inverter can convert the electric energy generated by the ancillary motor into the power source to drive the main motor, thereby achieving the purpose of energy conservation.

Through the double-motor double-frequency conversion control technology, the stepless adjustment of the centrifuge differential speed can be realized. It features fast reaction speed, accurate torque detection, stable torque control, and low failure rate.


Constant torque control technology

The constant torque control of the centrifuge is the most advanced control mode in the world. The real-time monitoring of the actual output torque of the constant torque variable frequency motor through the high-performance auxiliary inverter is compared with the set torque value, and PID is used to adjust the material pushing speed of the screw conveyor in real time. The centrifuge can achieve continuous, stable, and economic operation.


DC bus constant torque control technology Double-motor double-frequency Conversion common


IV. Three-phase centrifuge model and technical parameters


ItemCentrifuge model
LW250×1025ELW350×1435ELW450×1845ELW520×2150ELW580×2400ELW650×2600ELW750×2800E
m3/h
Throughput m3/h


Solid content

SS(W/W)

0.8-1%5~810-1535-4060-7070-8080-9090-100
1-2%3~58~1030-3540-6060-7070-8080-90
2-4%2~35 ~ 815-3020-4030-6040-7050-80
4-5%24~510-1515-2025-3030-4040-50
(mm)
Drum diameter (mm)
250350450520580650750
(mm)
Length-diameter ratio (mm)
4.14.14.14.14.143.7
(rpm)
Speed (rpm)
4500350032003000280026002200
Designed separation factor2835243525802620254624602033
(rpm)Differential speed (rpm)1~501-351~341~341~301~281~28
(Nm)
Differential maximum torque (Nm)
1500250050008000120001600020000
(kW )
Main motor power (kW)
1115 〜2230-3755-7575-9090-110110 ~160
(kW )
Ancillary motor power (kW)
45.57.5-1111-1515-18.52230
(mm)
Total length (mm)
2500370043005100552062506500
(mm)
Width (mm)
800105011501250145020002200
(mm)
Height (mm)
1150120014501600170015501600
(kg )
Total weight (kg)
12502500420052006500780011000

The length dimension varies with motor power.

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