English
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YJG
Jiangsu Jinling Dryer
841939990
SUS304/SUS316L/2205 ETC
Changzhou,Jiangsu,China
CE,ISO 9001: 2008,ISO 10004
Customized
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Product Description
Our wastewater treatment sludge paddle dryer is a heavy‑duty indirect‑heat continuous drying equipment specially developed for municipal sewage sludge, industrial wastewater sludge, oily sludge, filter cake and biosolids from wastewater treatment plants. Also known as hollow blade paddle dryer, twin‑shaft paddle dryer, it adopts
conduction heating instead of hot‑air convection drying, making it one of the most reliable thermal sludge reduction solutions for wastewater treatment projects worldwide.
Mechanical dewatering (filter press, centrifuge) only removes partial free water. Our paddle dryer further reduces sludge moisture from 40‑85% down to 5‑15% (adjustable according to project requirements), greatly cuts sludge volume, disposal cost and transportation expense. Dried sludge can be reused as alternative fuel for cement kilns, boiler fuel, soil conditioner or raw material for further resource recovery.
The wastewater sludge paddle dryer consists of a jacketed horizontal trough and twin counter‑rotating hollow shafts fitted with wedge‑shaped hollow paddles. Heating medium including saturated steam, thermal oil or hot water circulates inside hollow shafts, paddles and outer jacket to provide indirect conduction heat energy to wet sludge.
Wet sludge is fed into the drying chamber. Intermeshing paddles keep continuous gentle agitation, constantly renewing sludge contact surface against heated metal surfaces. Moisture evaporates and is carried away by small‑volume exhaust gas to condensation and odor‑treatment units. Dried sludge is discharged at the outlet end for downstream handling.
Key principle highlights:
Indirect heating: No direct contact between heating medium and sludge
Self‑cleaning wedge paddles reduce material sticking and fouling on heat‑transfer surfaces
Fully closed chamber, minimal exhaust gas and dust generation
200 square meter sludge paddle dryer
100 square meter sludge paddle dryer
Lab test using sludge paddle dryer
Paddle Dryer Inner shaft
Round plate to install on the shaft
Indirect conduction heating achieves thermal efficiency up to 85‑90%. Far less carrier air is required compared with rotary drum dryers; energy consumption and waste‑gas treatment load are significantly lowered.
Handles high‑moisture sticky sewage sludge, digested biosolids, oily wastewater sludge, chemical sludge, paper‑mill sludge and filter‑cake materials. Inlet moisture can range from 40%‑85% wet basis. Outlet moisture adjustable to meet incineration, fuel‑making or land‑application standards.
Inter‑meshing wedge hollow paddles produce continuous scrubbing effect, effectively preventing sludge sticking and caking on heating surfaces, ensuring stable long‑time continuous operation.
Horizontal compact design, much smaller occupied area than rotary dryers. Can be installed inside existing wastewater treatment plant workshops, or configured as skid‑mounted modular units for mobile projects.
Totally enclosed drying chamber generates very little dust and odor emissions. Easy to couple with condenser, scrubber, dust collector and waste‑gas treatment systems to meet local environmental‑protection regulations.
Sludge‑contacting parts can be manufactured in SUS304, SUS316L, Duplex 2205 alloy for corrosive industrial wastewater sludge scenarios; carbon steel for general municipal sewage projects.
PLC/HMI control system is optional, monitoring feeding rate, shaft rotation speed, heating‑medium temperature, chamber pressure and outlet sludge moisture for unattended stable running.
Municipal wastewater treatment plant: sewage sludge / digested biosolids drying for volume reduction & resource utilization
Industrial wastewater treatment: chemical sludge, electroplating sludge, paper‑mill sludge, food‑processing sludge
Oily wastewater & tank‑bottom oily sludge treatment; prepare dried sludge for cement‑kiln alternative fuel
Sludge filter‑cake drying after filter‑press or centrifuge dewatering
Waste‑to‑energy projects: prepare sludge solid fuel for boilers and kilns
| Configuration | Double Shaft | Four Shaft | |||||||||||
| Model(YJG) | 5 | 15 | 20 | 40 | 60 | 80 | 100 | 120 | 150 | 200 | 300 | 400 | 500 |
| Heating area(m²) | 5 | 15 | 20 | 40 | 60 | 80 | 100 | 120 | 150 | 200 | 300 | 400 | 500 |
| Power(kw) | 4 | 15 | 18.5 | 30 | 37 | 45 | 55 | 75 | 90 | 110 | 180 | 220 | 264 |
| Note | Adopt different construction material and configure based on different feature of Sludge | ||||||||||||
| Parameter | Standard Range |
|---|---|
| Heat‑transfer area | Customized from 5 m² up to 300 m² |
| Inlet sludge moisture | 40 ~ 85% (wet weight) |
| Outlet sludge moisture | 5‑15% (adjustable per requirement) |
| Heating medium | Saturated steam / thermal oil / hot water |
| Contact‑part material | SUS304 / SUS316L / Duplex 2205 / carbon steel |
| Operation mode | Continuous (default), batch optional |
| Shaft structure | Twin counter‑rotating hollow wedge‑paddle shafts |
| Optional system | Feeding screw, discharge rotary valve, vapor condenser, odor scrubber, PLC automatic control |
All capacity and dimensions are project‑specific. Final sizing depends on your actual sludge test data: feed moisture, hourly throughput, available heating‑medium parameters and target outlet moisture.
Wet Wastewater Sludge (from dewatering machine) → Screw Feeder → Paddle Dryer Main Body → Dried Sludge Discharge (for fuel / further disposal) Evaporated vapor → Cyclone dust removal → Condenser → Odor‑treatment system → Exhaust to atmosphere
A: It is suitable for municipal sewage sludge, digested biosolids, oily sludge, chemical industrial sludge, paper‑mill sludge and filter‑cake materials generated in wastewater‑treatment facilities.
A: Yes. Normally outlet moisture reaches 5‑15%. For special requirements, vacuum‑assisted configuration can realize moisture below 3‑5%.
A: Saturated steam is most widely adopted; thermal oil and hot‑water heating are also supported according to site utility conditions.
A: 100% project‑oriented customization. Please provide sludge lab analysis report, required evaporation capacity, available heating‑medium condition and target residual moisture for technical proposal.
If you are looking for reliable sludge drying equipment for your wastewater‑treatment plant or sludge‑resource‑recovery project, please send us your sludge sample analysis, required processing capacity and site utility conditions. Our engineering team will provide a complete technical proposal, mass‑balance calculation and quotation.
Lydia Shen
Email:lydia@jinlingdry.com
Whatsapp:+8613776858224
