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Industrial Wastewater Treatment & Solid-Liquid Separation Ancillary Equipment

Industrial wastewater streams and sludge management require robust, application-specific unit operations rather than one-size-fits-all systems. This product category encompasses auxiliary and specialized treatment equipment engineered for primary solid-liquid separation, high-efficiency flotation, chemical precipitation enhancement, and mechanical sludge dewatering. Designed for integration into municipal and industrial treatment plants, these units address persistent operational bottlenecks such as high suspended solids (SS) loads, emulsified oils, and bulky sludge volumes. Sourcing engineers and EPC contractors utilize this equipment to meet strict discharge limits, minimize footprint constraints, and lower life-cycle operational costs.

9–20 Kg/h Screw Press Sludge Dewatering Machine
Lingke screw press sludge dewatering machine handles DS 9–20 kg/h with a 5,000–50,000 mg/L inlet sludge concentration range. The compact system integrates a SUS304 screw dewatering section,...
Compact Dissolved Air Flotation System For Integrated Eff...
Discover Ling Ke Environmental Technology's compact integrated DAF system for industrial wastewater treatment. Remove over 90% of oil and suspended solids with a space-saving, easy-to-operate...
Rotary Drum Screen Filter For Wastewater Treatment
The Rotary Drum Screen Filter is an efficient solid-liquid separation equipment designed for wastewater treatment applications. It can effectively remove suspended solids, fibers, sludge particles...
DAF Dissolved Air Flotation System for Industrial Wastewa...
The DAF Dissolved Air Flotation System is a proven solution for treating oily and high-load industrial wastewater. Designed for Latin America, it ensures reliable performance, low operating cost,...
Dissolved Air Floatation
Dissolved Air Flotation (DAF) is a high-efficiency wastewater treatment device designed for solid-liquid separation. It effectively reduces pollutants like suspended solids, COD, and BOD in water,...
Lamella Plate Clarifier
The lamella plate clarifier is a high-efficiency solid-liquid separation device improved based on the shallow tank sedimentation theory. Its core design is to install parallel inclined thin plate...
Frame Filter Press
It is a batch filter press. It uses pressure as the filtration driving force. It achieves efficient solid-liquid separation for various industrial applications.
Screw Press Sludge Dewatering Machine
This is a new type of solid-liquid separation equipment. It is mainly used for sludge dewatering treatment. It can help you handle sludge efficiently and reduce the cost of sludge disposal.
Rotary Drum Micro Filter
This rotary drum screen (also called rotary screen microfilter) is an efficient separation device for suspended impurities like hair, fibers, plastic particles, sediment in wastewater. It is one...

Solutions

Pre-Treatment & Screening Solutions

Removal of fibrous, coarse, and suspended impurities prior to biological or membrane stages to protect downstream pumps and bioreactors.

High-Load Clarification & Flotation

Removal of dispersed oils, fats, greases (FOG), and low-density suspended solids via induced or dissolved air flotation (DAF) and lamella sedimentation.

Sludge Dewatering & Volume Reduction

High-efficiency mechanical dewatering to convert fluid sludge into manageable cake solids, directly reducing hauling and disposal expenditures.

Product Category

Equipment Type	Core Function	Primary Application	Key Construction Material	Operating Principle
Rotary Drum Screen / Micro Filter	Fine solid-liquid separation; fiber and hair removal	Municipal intake, pulp & paper, textile, food processing	SS304 / SS316L	Gravity filtration through a rotating wedge-wire or mesh cylinder
Dissolved Air Flotation (DAF) System	Suspended solids, COD, and oil-water separation	Slaughterhouse, dairy, petrochemical, oily wastewater	Carbon steel with anti-corrosive epoxy / SS304	Micro-bubble attachment reducing particle density to induce rapid flotation
Lamella Plate Clarifier	High-rate chemical sedimentation	Heavy metals removal, chemical precipitation, high-turbidity water	SS304 / Carbon Steel Anti-Corrosion	Settling across shallow parallel inclined plates maximizing effective surface area
Screw Press Sludge Dewatering Machine	Continuous sludge volume reduction	Municipal and industrial biological sludge thickening & dewatering	SS304 (Wetted parts)	Interlocking fixed/moving rings and a variable-pitch screw press mechanism
Frame Filter Press	Batch high-pressure dewatering	High-solids industrial slurry, chemical sludge	Cast iron / Reinforced PP filter plates	Hydraulic closing pressure forcing filtrate through filter cloths

System Configuration

9–20 Kg/h Screw Press Sludge Dewatering Machine

Skid-Mounted DAF Units

Pre-piped assemblies integrating saturation tanks, air-release valves, chemical dosing skids, and scraper mechanisms.

Stainless Steel DAF Separator For Oily Wastewater

Integrated Control Cabinets

PLC-controlled electrical panels pre-wired to local level sensors, variable frequency drives (VFDs) for sludge pumps, and automated backwash valves.

High-Efficiency Dissolved Air Flotation System

Drive & Transmission Assemblies

Heavy-duty gearmotors (e.g., SEW or equivalent industrial grade) coupled with torque-limiting safety devices to protect mechanical components against jamming.

Treatment Process

Treatment Stage	Target Pollutants	Applicable Equipment	Typical Removal Efficiency
Primary Screening	Large debris, fibers, rags, plastics	Rotary Drum Screen Filter	70% to 90% (by size exclusion)
Physico-Chemical Separation	Emulsified oil, grease, free suspended solids, colloidal particles	DAF System / Lamella Plate Clarifier	SS: 85% to 95%; COD: 50% to 70%
Sludge Conditioning & Dewatering	Secondary biological sludge, chemical sludge	Screw Press / Frame Filter Press	Mud cake moisture: 75% to 82% (Screw Press)

Applications

Slaughterhouse & Meat Processing

High-organic load and animal fat separation using DAF units coupled with drum screens.

Municipal Wastewater Plants

Inlet coarse/fine screening and post-digestion sludge dewatering.

Petrochemical & Oil Refineries

Free and emulsified oil separation in wastewater streams prior to biological treatment.

Paper & Pulp Mills

Fiber recovery from white water and primary clarification.

Technical Specifications

Equipment	Parameter	Specification
Rotary Drum Screen	Processing Capacity	10–500 m³/h
	Slot Size / Mesh Opening	0.25–2.5 mm
	Power Rating	0.75–4.0 kW
DAF System	Hydraulic Loading Rate	5–12 m³/m²/h
	Air-to-Water Ratio	2–4%
	Dissolved Pressure	0.3–0.4 MPa
Multi-Disk Screw Press	Dry Sludge Processing Capacity	2–200 kg-DS/h
	Cake Moisture Content	≤75–81%
	Wash Water Consumption	0.1–0.3 m³/h, with intermittent automatic rinsing

Selection Guide

01.

Hydraulic Load & Peak Flow Calculation

Determine average hourly flow and peak flow to size the equipment cross-sectional area and weir loading.

02.

Characterization of Suspended Solids & Viscosity

Evaluate particle size distribution, specific gravity, and oil content. Select DAF for low-density/oily solids and Lamella Clarifiers for high-density inorganic settling.

03.

Corrosion Environment Assessment

Specify material grades according to chloride content, pH levels, and chemical dosing agents (e.g., use SS316L for acidic or saline wastewater streams).

04.

Footprint and Elevation Constraints

Evaluate vertical clearance for filter press clearance or modular skid layout restrictions.

Manufacturing and Quality Control

Rotary Drum Screen Filter For Wastewater Treatment

CNC Laser Cutting & Plate Bending

High-precision automated sheet metal fabrication ensuring exact alignment for modular tank assemblies and internal baffles.

Welding Standards

All structural and pressure-retaining welds executed by certified welders in accordance with structural welding codes, utilizing full-penetration techniques on critical seams.

Pickling and Passivation

Stainless steel components undergo chemical pickling and passivation treatments to restore chrome oxide layers and maximize anti-corrosion performance in aggressive aquatic environments.

DAF Dissolved Air Flotation System for Industrial Wastewater Treatment

Factory Acceptance Testing (FAT)

Hydrostatic pressure testing of vessels and pressure tanks; dry-run motor rotation and mechanical seal checks prior to crating.

Customized

Voltage & Power Frequency Adaptability

Configured for regional electrical grids (e.g., 380V/50Hz, 460V/60Hz, 415V/50Hz) with IEC or NEMA motor specifications.

Material Upgrades

Substitution of standard SS304 with SS316L or specialized duplex stainless steels for high-chloride or extreme pH environments.

Skid Integration

Custom frame layouts designed to match exact containerized footprints or restricted plant floor layouts.

Automation Protocols

Integration with plant SCADA systems via Modbus TCP, Profinet, or hardwired interlocks.

Our Certificate

FAQ

Q: How do I determine whether my oily wastewater requires a DAF system or a Lamella Clarifier?

A: DAF systems are engineered for wastewater containing dispersed oils, greases, and suspended solids with specific gravities close to or less than water (less than 1.0), as micro-bubbles float these particles to the surface. Lamella Clarifiers rely on gravity sedimentation and are suited for heavier inorganic particles and chemical precipitates with specific gravities greater than water (greater than 1.0).

Q: What is the typical maintenance requirement for a Rotary Drum Screen Filter?

A: Routine maintenance involves inspecting the spray wash nozzles for clogging, checking the integrity of the wedge-wire or mesh screen cylinder, and greasing the external pillow block bearings monthly. The automated spray wash system operates on an intermittent timer cycle to prevent blinding.

Q: Can the Multi-Disk Screw Press handle greasy sludge from food processing plants?

A: Yes, provided that a pre-conditioning chemical dosing tank (flocculation using polymers) is properly integrated. However, if the grease content is exceptionally high, thermal pre-treatment or an initial dissolved air flotation thickening step is recommended to prevent blinding of the ring gaps.

Q: What welding and surface treatment standards are applied to carbon steel components?

A: Carbon steel structural skids and non-wetted vessels are blasted to Sa 2.5 surface cleanliness standards, followed by a multi-layer industrial epoxy primer and a chemical-resistant polyurethane topcoat. Wetted carbon steel surfaces can alternatively be upgraded to stainless steel construction.

Q: How are electrical control panels customized for international export projects?

A: Control panels are built to match destination country standards, utilizing components from globally recognized brands (such as Schneider, Siemens, or ABB). Enclosures are rated up to NEMA 4X or IP65 for outdoor or corrosive plant environments, complete with multilingual HMI touchscreens.

Q: What documentation is supplied with each equipment shipment?

A: Each shipment includes comprehensive documentation packages: certified mechanical fabrication drawings, electrical schematics, P&ID diagrams, component operation and maintenance manuals, material test reports for primary metals, and factory test inspection records.

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