Shenzhou Wastewater Systems Clarifier Sewage Water Treatment Decanter Centrifuge

• Customization: Available
• Warranty: 1 Year
• Type: Centrifuge
• Object: Cosmetic
• Separation Mode: Sedimentation Type
• Operating Type: Continuous Type
• Installation: Horizontal
• Centrifuge Type: Horizontal Spiral Centrifuge
• Pressure: Low Pressure
• Condition: New
• Product Name: Centrifuge Separator Machine
• Weight: 9200
• Dimension(L*W*H): 6052*1460*2100 mm
• Warranty of Core Components: 1 Year
• Core Components: Motor
• Key Selling Points: Long Service Life
• Feature: Automatic Coutinuous Working
• Material Quality: Carbon Steel/Stainless Steel SUS304/316
• Motor: ABB/Customized
• Certification: CE ISO9001
• Application: Liquid Solid Separation
• Transport Package: Wooden Case
• Trademark: SHENZHOU
• Origin: Jiangsu, China

Product Description

Product Description

Shenzhou Wastewater Systems Clarifier sewage Water Treatment decanter centrifuge

Shenzhou Wastewater Systems Clarifier sewage Water Treatment decanter centrifuge

A decanter centrifuge, also known as a horizontal bowl centrifuge, solid bowl centrifuge or scroll centrifuge, is a machine used to separate a solid material from a liquid(s) using a high-speed and continual rotational process. While wastewater treatment of biosolids is a primary application, the separation of one solid material from one liquid (2-phase dewatering) in a slurry is also important for a number of industries including chemical, food, oil, and mining to name a few.

 

Decanter centrifuge is a mechanical equipment which utilize the principle of centrifugal and sedimentation and can carry out continual separate the suspend liquid with density difference.
The centrifuges which made by out factory can clarify, dehydrate and classify the suspensions with 0.002-3 mm solid-phase particles and thickness range at 0.5~40%.

How it Works

The separation of a solid and liquid(s) in a decanter centrifuge system work on the principle of gravitational forces. Whereas it takes considerable time for the gravitational separation of a muddy mixture (to fall to the bottom) and water (to rise to the top) in separation technologies based on 1xG separation such as,a static container, clarifier or lamal separator, the rapid rotation of a centrifuge greatly speeds up this gravitational principle.
In fact, the G-force generated by a decanter centrifuge can be well in excess of three-thousand times greater than gravity
reducing the separation process from hours to mere seconds. Today's centrifuges are a counter-current type technology. The separation process in a 2-phase decanter centrifuge results in the denser solid particles to be compacted and settled out in the inner drum and then transported and removed via solids discharge end of the decanter. The centrate is routed to the opposite end of the centrifuge and removed via the centrate outlet. In a 3-phase centrifuge, the baffle system is built inside the centrifuge. The baffle system blocks the oil from being discharged with the water. The oil (the lighter phase fluid) is collected between the two baffles and skimmed off the top.

 

The basic operation includes the following centrifuge parts and how they function:
1. The feed material enters the centrifuge via the feed pipe inlet on one end of the centrifuge

2. Due to centrifugal force, the heavier particles are pushed through the liquid and collected on the inner wall of the bowl; the high speed rotation of the bowl separates the solids and liquid materials

3. The continuous rotation of the bowl can be accomplished by a VFD (Variable Frequency Drive)

4. The scroll conveyor (scroll) inside the bowl rotates at a slightly different speed than the bowl (differential speed)

5. The scroll conveyor continuously scrapes the solids off the inner bowl wall and moves the solids in the direction of the
centrifuge conical's solids discharge area

6. The liquid (centrate) moves in the opposite direction from the solids due to Pascal's Law (or a system of combined piping) and because the solids discharge end is sealed by the solids

7. The differential speed of the centrifuge controls the solids retention time; the longer the solids are under g-force the drier the solids become in the dewatering process.

Product competitive advantage:

1, Helical pusher adopts the special antifriction method: sprinkle hardness alloy or inlay hardness alloy anti-friction disk; anti -corrosion stainless steel is employed for the material of the main parts of drum, so that assure the durability and longer using lifetime of the equipment.

2, According to the operating condition's characteristics of material, optimize the drum length-diameter raido, drum and structure of drum taper parts.

Technical parameter

Name	Unit	Parameter
Model	LWM760	LWM760*3040-N
Capacity	M3/h	10-160M3/H
Solid content	%	0.520
Design Rotation speed	r/min	2260Variable frequency speed regulation
Working rotation speed	r/min	2000Variable frequency speed regulation
Max Separation factor	G	2060/Variable frequency speed regulation
Drum diameter	Mm	760
Drum length	mm	3040
Slag outlet		Wear-resistant ceramic or hard alloy
Mud scraping position of spiral blade		Surface spray welding tungsten carbide protective coating
Drum		AISI304/316 stainless steel/2205/2507Duplex steel
Screw		AISI304/316 stainless steel/2205/2507Duplex steel
Hood		AISI304stainless steel
Feed pipe, Drainage and slag discharge pipe		AISI304stainless steel
Machine base		High Quality Carbon Steel
Screw Torque	Nm	25000
Differential speed	Rpm	45-80/Stepless adjustable
Differential adjustment accuracy value	Rpm	≤1
Noise	dBA	90
vibration	mm/S	7.1
Motor power	KW	185380/3/50HZ
explosion protection level		EEx e II T3
Rated voltage	V	600
Protection class	IP	56
Insulation class		F
Frequency conversion electric control cabinet	760	ZK1

 

Application

Decanter Centrifuges for Sludge Thickening and Dewatering
The cost of biosolids storage, transportation, and end-use or disposal can significantly impact the choice of decanter centrifuges to perform thickening or dewatering functions. Generally speaking, sludge thickening before dewatering will reduce the tankage needed for storage by removing water; dewatering works to remove more water producing a drier cake material .

Sludge Thickening

According to ScienceDirect, Sludge thickening commonly produces sludge solids concentrations in the 3% to 7% range, which results in an 80% volume reduction. Several factors determine whether a sludge thickening system is sufficient in the treatment of biosolids. These include:
Types of Sludge
* Waste Activated Sludge (WAS) / Secondary Sludge - (0.8-1.3% TS)

* Has natural separation of free water (floc) and is easily settable
* Little to no polymer is required.
* Traditional decanter centrifuges used for sludge thickening can work using little to no polymer but require higher energy
consumption or the capacity of the equipment is limited. Other thickening technologies (rotary drum, gravity belt, DAF) need polymer to produce 4-5% solids concentration

**The Shenzhou Sludge Thickener will achieve 4-5% solids concentration using no polymer, with 50% less energy consumption and increased capacity compared to traditional decanter centrifuges.

* Primary Sludge - (1.5-5% TS)

* Solids are heavy and settable but laden with colloidal material
* Hard to remove fine particles
* Polymer is usually required

* Digested Sludge - (1.5-3% TS)

* Not easily settable;
* Polymer is usually required

* Transportation costs based on tonnages

* Landfill percent of solids concentration requirements

* Whether the sludge can be disposed in a sludge lagoon

Sludge thickening using a decanter centrifuge before a digestion treatment process will reduce the size of the digester, and can be used before sludge storage and liquid land applications. Depending on the utilization of the sludge product (landfilled, land applied or dried) the drier the product the more cost effective it will be for storage, transportation and disposal.

 

Sludge Dewatering
Mechanical dewatering with a decanter centrifuge can result in a 95% reduction in volume and a concentration of between 15% to 35% dry solids, compared with 80% volume reduction and solids concentration of 3% to 7% with a sludge thickening-only operation. By removing more water and thereby producing a drier cake product, dewatering will offer significant savings in treatment, handling, and disposal costs.

* Reduces volume, saving money on storage and transportation
* Eliminates free liquids before landfill disposal
* Reduces fuel requirements if the residuals are to be incinerated or heat dried
* Eliminates ponding and runoff

 

Raw Primary	The feed solids are assumed to come off the bottom of a primary clarifier and therefore have a consistency of 2 - 7% ts. For thickening before anaerobic digestion or tanker hauling, cake at 5 - 10% ts is specified at +95% recovery and is easily obtainable.
Waste Activated Sludge	Most feed solids vary from 0.4 - 2.0% tss. Sludge thickening without polymer yields a 4 - 6% cake for recovery specs of 85 - 90%. Polymer is required at higher level of recoveries and/or while thickening at 7 - 10%. Dewatering and high solids dewatering typically occurs at 90 - 95% recovery levels.
Raw Mixed Primary / Secondary Sludge	Various combinations of mixed primary and secondary sludge are usually found at a concentration between 3 - 6% tss. This analysis assumes a 50:50 blend of sludge types. Recovery levels of +95% are typically achieved using polymer for all modes of separation.
Mixed Anaerobically Digested Sludge	Assuming a 50:50 blend of primary and secondary sludge to the digester, feed solids at 2 - 4% tss typically result in specifications at +95% recovery with polymer.
Aerobically Digested Sludge	For aerobically digested sludge, feed solids at 1 - 2.5% tss typically result. Polymer is used to effect separations at 90 - 95% recovery.

 

 

 

 

 

 

 

 

 

 

 

Discharged sludge almostly dry

Glossary of Terms Used in this Section

 

Biosolids	Organic matter recycled from sewage especially for us in agriculture as fertilizer. Treated sewage sludge.
Cake	The dried substance (sludge solids) from a decanter centrifuge operation.
Centrate	The liquid discharged from a centrifuge after most of the solids have been removed.
Centrifugal Force	The force (non-real force) that is needed to make things work as you would think in a reference frame that is accelerating.
Countercurrent Technology	In countercurrent flow, the two flows move in opposite directions. Under high centrifugal force, the heavier solids migrate radially outwards towards the bowl, displacing the lighter liquid to the pool surface at a smaller radius.
G-force	An outward force acting on a body rotating about an axis.
Millon Gallons per Day (MGD)	The measurement of water a facility processes each day.
Sludge	The semi-solid residual material which is left behind from the treatment of wastewater.
Slurry	A muddy mixture of a liquid and a solid; a watery mixture of insoluble matter.
STP	Sewage Treatment Plant
Total Solids (TS)	The combination of total dissolved solids and total suspended solids in a liquid.
Total Suspended Solids (TSS)	The portion of fine particles, these do not dissolve, that remains suspended in water.
Variable Frequency Drive (VFD)	Motor controller that drives an electric motor by varying the frequency and voltage of its power supply. The VFD also has the capacity to control ramp-up and ramp-down of the motor during start or stop.
Waste Activated Sluge (WAS)	The excess quantity of microorganisms that must be removed from the biological wastewater treatment process to keep the ration of biomass and incoming pollutant load in balance.

Company Profile

Jinhua Shenzhou Centrifuge Co., Ltd. (formerly restructured from a state-owned enterprise founded in the mid-1970s) is a professional manufacturer of sludge/sewage treatment equipment and solid-liquid separation equipment. Main production: LW series decanter centrifuge, SZ stacked screw dewatering machine, LWS three-phase centrifuge, centrifugal dewatering machine, sludge thickening and dewatering integrated machine (sludge dewatering integrated machine), sludge dewatering complete equipment, sewage treatment Complete sets of equipment, planetary gear differentials and decanter centrifuge related supporting equipment (sludge cutter, shaftless screw conveyor, integrated flocculant preparation system, etc.). With more than 20 years of production history, the products are spread all over the country and have gone abroad, and have long-term cooperation with universities, such as Zhejiang University of Technology. It has the product design and development capabilities of LW series centrifuges, and has obtained national patents. There are a variety of precision equipment and supporting process technology and advanced testing equipment and technology used in the production of centrifuges, a strict quality assurance system and a complete after-sales service guarantee system. The company is a modern high-tech enterprise integrating scientific research, design, manufacturing, sales and service. The company is committed to the R&D and manufacturing of (decanter centrifuges / stacking screw dehydrators / three-phase centrifuges / complete sets of sewage treatment equipment), providing centrifugal separation equipment and solutions for tens of thousands of domestic and overseas users. Mr. Sun, Chairman With decades of design and manufacturing experience, it has realized high-speed separation technology and has national patents. China's first batch of decanter centrifuge production and research units participated in various university collaborations, lectures and lectures. Leading the development direction of centrifugal separation equipment and centrifugal separation technology, products are exported to dozens of countries overseas. The company has independent import and export rights, and the equipment is currently exported to the United States, Canada, Russia, Brazil, Croatia, Czech Republic and other countries. Tailor-made exclusive solutions to solve your separation problems. Focusing on solid-liquid separation solutions for decades, it has provided professional services to nearly 10,000 companies worldwide. Professional product application technicians will tailor-made filtration and separation equipment solutions for you to solve separation problems. One-stop service makes you more worry-free.

Packing & Delivery

Packaging
Transport	Ocean shipping for whole machine,Air express for spare parts
Container	20'GP, 40'HC or Shipping LCL
Packaging Details	The normal package is wooden box(Size: L*W*H). If export to european countries,the wooden box will be fumigated.If container is too tigher,we will use pe film for packing or pack it according to customers special request.

FAQ

1. who are we?
We are based in Zhejiang, China, start from 2007,sell to Domestic Market(15.00%),Africa(10.00%),Mid East(10.00%),Western Europe(8.00%),South America(6.00%),North America(5.00%),Oceania(5.00%),Northern Europe(3.00%),Eastern Asia(2.00%),South Asia(2.00%),Eastern Europe(1.00%),Southeast Asia(1.00%),Southern Europe(1.00%). There are total about 51-100 people in our office.

2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;

3.what can you buy from us?
Decanter centrifuge,Screw sludge dewatering machine,Three-phase centrifuge,Shaftless screw conveyor,Automatic Polymer Dosing System

4. why should you buy from us not from other suppliers?
With more than 20 years of production history, the products have gone abroad, Long-term cooperation with institutions of higher learning. we have the product design and development capabilities of LW series centrifuges, and have obtained national patents.

5. what services can we provide?
Accepted Delivery Terms: Express Delivery
Accepted Payment Currency:USD,EUR,JPY,CAD,AUD,HKD,GBP,CNY,CHF;
Accepted Payment Type: T/T,Credit Card,PayPal,Western Union;
Language Spoken:English,Chinese