Automatic Screw Sludge Dewaterer for Coal-Wash Wastewater 1

Automatic Screw Sludge Dewaterer for Coal-Wash Wastewater 2

Automatic Screw Sludge Dewaterer for Coal-Wash Wastewater 3

Automatic Screw Sludge Dewaterer for Coal-Wash Wastewater 4

Automatic Screw Sludge Dewaterer for Coal-Wash Wastewater 5

Automatic Screw Sludge Dewaterer for Coal-Wash Wastewater 6

Automatic Screw Sludge Dewaterer for Coal-Wash Wastewater

The Automatic Screw Sludge Dewaterer for Coal-Wash Wastewater is a compact, continuous machine that squeezes water out of coal-wash sludge using a rotating screw and conveyor cage. It runs automatically with PLC and variable-frequency control, and can include polymer dosing and flocculation to improve separation. The unit reduces sludge volume, recovers water for reuse, lowers transport and disposal costs, and resists abrasion from gritty coal residues. It requires little space, minimal manual labor, and regular but simple maintenance like checking wear parts and dosing systems. This solution helps coal plants meet environmental rules while simplifying on-site sludge handling.

Usage scenarios (three sentences):

- At coal preparation plants to dewater underflow sludge before landfill, briquetting, or shipment, cutting volume and disposal cost.

- In power stations, coking plants, or mineral processing sites to recover water and reduce the moisture of coal fines for easier handling and potential reuse as fuel.

- As part of a wastewater treatment line after thickeners or clarifiers to produce a stable cake for transport, storage, or further processing.

brand name:

QILEE

Shipping:

Support Sea freight

Payments:

L/C,D/A,D/P,T/T,Western Union,MoneyGram,OA

Lead Time:

1-1(sets):15(days),>1(sets):To be negotiated(days)

Place of Origin:

China

Inquiry

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Outlet Position(mm)

495

Water Demand for Cleaning(L/h)

Operating Weight(kg)

1230

Net Weight(kg)

820

Sludge Flow(m3/h)

1~15

Powder Consumption(kw)

0.8

Treating Capacity(kg/h)

30~50

Dimensions(mm)

3255*985*1600

After Warranty Service

Online support

Product name

Screw Sludge Dewatering Machine

Warranty of core components

1 Year

Marketing Type

Hot Product 2022

Showroom Location

Malaysia

Applicable Industries

Construction works

Condition

New

Weight

820kg

weight (kg)

820 kg

productivity

30~50

warranty

1 Year

place of origin

Shanghai, China

core components

Motor

machinery test report

Provided

video outgoing-inspection

Provided

Efficient Compact Durable Dewatering

The QLD Dewatering Screw Press delivers continuous, fully automatic dewatering for coal‑wash wastewater, cutting labor, odor and wash water use while preventing jams and lowering energy and noise. Its compact integrated shape and enclosed working style, built in high‑quality SUS304 stainless steel with a slow‑running screw, ensures long service life, easy maintenance and stable solids recovery. Packaged in standard export cartons and offered in multiple capacity models, the QLD Dewatering Screw Press lets you pick the right quality and style for safe delivery and optimized disposal cost savings.

- Automated Screw Dewatering Efficiency

The QLD Dewatering Screw Press is a full-automatic, SUS304 enclosed dewatering system with an integrated electrical cabinet and disposal tank that handles high- and low-consistency coal-wash wastewater while reducing odor, footprint and labor through 24/7 operation. Its self-cleaning screw running through stacked fixed and moving rings, aided by polymer dosing and adjustable back-pressure plates, thickens, filters and extrudes sludge cakes with low power use, minimal wash water and tunable throughput to control cake dryness. The slow-running screw, polymer-filled lumens and gap-cleaning moving rings prevent jamming, lower noise, simplify maintenance and extend service life, delivering reliable, labor- and cost-saving performance for coal wash plants.

Automatic Screw Dewatering System

The QLD Dewatering Screw Press is a full-automatic, stainless-steel (SUS304) screw sludge dewatering system for coal-wash and industrial wastewater, featuring an integrated electrical cabinet, disposal tank and dehydrator to save footprint and reduce odor. Its screw-through-ring filter design, with moving rings and polymer-filled gaps, reliably filters and conveys sludge cakes while self-cleaning action prevents jams and enables continuous 24-hour operation with low power consumption and noise. Adjustable screw speed and back-pressure gaps let operators control capacity and cake moisture for varied sludge types across municipal, food & beverage, chemical, power plant and petrochemical applications, and routine maintenance is simple.

◎ Continuous Automated Operation

◎ Enclosed Stainless Integration

◎ Efficient Dewatering Mechanism

Efficient Reliable High Throughput

Born from years of coal-wash wastewater research and field experience, the QLD Dewatering Screw Press combines precision-engineered screw geometry and durable, corrosion-resistant materials to ensure continuous, reliable operation in harsh environments. As an Automatic Screw Sludge Dewaterer for Coal-Wash Wastewater, it automates feeding, compression and cake discharge with PLC control, reducing moisture content, energy consumption and manual intervention. Features and advantages include adjustable screw speed and torque for stable throughput, integrated polymer dosing and wash systems for higher cake dryness, a compact modular footprint for easy maintenance, and low operating and lifecycle costs.

Material introduction

The QLD Dewatering Screw Press is built predominantly from SUS304 stainless steel, delivering high corrosion resistance and extended service life suitable for coal-wash wastewater environments. Key components — including the enclosed dehydrator, integrated electrical cabinet and disposal tank — use robust stainless construction to limit odors, leaks and maintenance while supporting continuous automatic operation. Wear-resistant screw shafts and precision rings, together with polymer-filled lumens, provide jam-resistant dewatering with lower power consumption and simplified routine upkeep.

◎ SUS304 Stainless Steel Structure

◎ Slow-Running Screw & Ring Assembly

◎ Polymer & Flocculant Conditioning System

FAQ

What is an Automatic Screw Sludge Dewaterer and how does it work for coal-wash wastewater?

It is a mechanical dewatering device (screw press / auger-type press) that continuously compresses and drains slurry through a perforated screen while conveying the solids. For coal-wash wastewater the feed slurry is usually conditioned with a flocculant, fed to the screw dewaterer, and the rotating screw progressively increases pressure to squeeze water out. The clarified filtrate discharges separately, and the concentrated coal sludge (cake) is discharged at the end for handling or disposal.

Is this equipment suitable for coal-wash/tailing slurries?

Yes. Screw dewaterers are commonly used in coal preparation plants to recover fine coal and reduce tailings volume. They handle high-volume, low-solids slurries typical of wash operations when properly conditioned with polymers and sized to the solids load and particle characteristics. They perform well with fine coal, clays and flotation tailings when upstream flocculation is optimized.

What operational settings and automation features should I expect?

Modern units are fully automatic with PLC control, level and torque sensors, automatic polymer dosing and mixing systems, overload protection, and alarms. Operators mainly monitor control panels, adjust polymer dose and feed rate, and respond to alarms. Remote monitoring and integration with plant control systems are often available for continuous operation.

How do I determine capacity, expected cake dryness, and water recovery?

Capacity and performance depend on feed solids concentration, particle size, coal/clay content, polymer type/dose, and required cake dryness. Typical cake moisture ranges widely (commonly 30–60% by weight) and water recovery also varies. Final sizing and performance guarantees are based on site testing or pilot trials using representative slurry samples—consult the supplier for a plant-specific evaluation.

What maintenance and wear considerations apply in coal-wash applications?

Routine checks include inspection of the screen elements, screw flighting, bearings, seals, drive and torque components, and polymer dosing system. Screens and flighting are abrasive-wear items and may need periodic replacement or hard-facing depending on ash/clay content. Establish preventive maintenance (lube, alignment, screen cleaning) and spare-parts stocking to avoid downtime. Units are designed for continuous operation but life and intervals vary with abrasivity.

How is the dewatered cake handled and what about the treated water?

Dewatered cake can be conveyed into hoppers, stacked, transported by conveyors, bagged or fed to drying/storage. Depending on moisture and coal fines concentration, cake may be suitable for fuel blending, briquetting, landfill or further drying. The discharged filtrate (clarified water) can often be recycled to the wash plant after polishing (sedimentation, filtration or flotation) to meet reuse or discharge standards. Final disposal/reuse pathway should be chosen based on cake moisture, environmental regulations and plant water balance.

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