Why is a multi-disc screw press better than a belt filter press?

A multi-disc screw press offers a 90% reduction in wash water, fully automated 24/7 operation, and a non-clogging design.

Can a screw press handle oily sludge from food processing?

Yes. The multi-disc screw press is specifically designed for oily sludge. Its unique structure of fixed and moving rings creates a self-cleaning mechanism that prevents clogging.

How much can a low-temperature sludge dryer reduce sludge volume?

A low-temperature heat pump sludge dryer can reduce sludge volume by up to 80%, shrinking 4 tons of wet sludge into 1 ton of dry granules.

How does Kopay International ensure quality control?

We perform raw material verification, motor performance checks, and a 24-hour factory fatigue test before packing every order.

What is the typical power consumption of a sludge dewatering screw press?

Kopay’s multi-disc screw presses are highly energy-efficient. A model with 300kg-DS/h capacity typically consumes only 1.5kW to 2.2kW.

Why does polymer need a 3-chamber maturation system?

PAM requires 60 minutes of aging to uncoil molecular chains. A 3-chamber system ensures perfect maturation, preventing fish-eyes and saving 20% in chemical costs.

How do micro-bubbles improve Dissolved Air Flotation (DAF) performance?

DAF systems use 20-40 micron micro-bubbles to attach to suspended solids and oils, resulting in a 95%+ removal rate of Fats, Oils, and Grease (FOG).

Are Kopay wastewater systems CE and ISO certified?

Yes. Our production partners maintain ISO9001:2015 and CE certification, ensuring all equipment meets international export safety standards.

Dissolved Air Flotation (DAF) System Manufacturer | Kopay Intl

Name: Dissolved Air Flotation DAF Waste Water Treatment Industry
Brand: KOPAY ENVIRO
SKU: DSAF001
Price: 6000 USD
Availability: InStock

Introduction | Description: Dissolved Air Flotation DAF

Dissolved Air Flotation (DAF) systems are essential solid-liquid separation equipment widely used in the sewage treatment industry.

They effectively remove suspended matter, colloid, oil, grease, and rubber substances during preliminary treatment of sewage. DAF aims to separate fine suspended solids, algae, and micro-floc from water, making it ideal for various industries including:

Waste oil or grease separation and recycling in oil exploration and refining, biodiesel production, machining, and food production.
High concentration organic wastewater treatment in paper, printing, dyeing, textile, leather, pharmaceutical, and fermentation industries.
Biochemical effluent liquid separation including anaerobic and aerobic processes like activated sludge, contact oxidation, and filtration.
Treatment of wastewater from farms and slaughterhouses including cattle, pigs, chickens, and slaughterhouse wastewater.
Management of manufacturing waste from electroplating, painting, and similar processes.
Purification of rivers, landscapes, and recycling water systems. Explore the versatility and efficiency of DAF systems for your wastewater treatment needs.

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Description

High-Performance Dissolved Air Flotation (DAF) Systems

The Kopay Dissolved Air Flotation (DAF) system is an effective solid-liquid separation solution designed to remove suspended solids (TSS), fats, oils, and grease (FOG) from industrial wastewater. By utilizing microscopic air bubbles, our DAF systems float contaminants to the surface for automatic skimming, leaving behind clear, treated water.

How Our DAF System Works

Our system uses a specialized Dissolved Air Pump to create a pressurized mixture of air and water. When this mixture is released into the flotation tank, it forms millions of micro-bubbles (20–40 microns). These bubbles attach themselves to the chemical flocs (formed by PAM/PAC), lifting them to the surface to form a concentrated sludge blanket.

Key Technical Advantages

Superior Clarification: Capable of removing up to 99% of TSS and 95% of Oil & Grease, significantly reducing downstream COD and BOD loads.
Advanced Micro-Bubble Generator: Our high-efficiency air dissolution system ensures a stable, milky-white cloud of bubbles for consistent performance.
Stainless Steel Construction: Built with SUS304 or SUS316 Stainless Steel for extreme durability and resistance to corrosive chemicals.
Small Footprint: Highly compact design compared to traditional sedimentation tanks, saving valuable factory floor space.
Automatic Scum Removal: Equipped with a heavy-duty chain-plate skimmer that removes surface sludge continuously without disturbing the flotation process.

Model (KP-DAF)	Flow Rate (m³/h)	Power Consumption (kW)	Material Option	Application
DAF-5	5m³/h	1.5kW	SUS304 / Carbon Steel	Small Scale Food Factory
DAF-10	10m³/h	2.2kW	SUS304 / Carbon Steel	Dairy / Meat Processing
DAF-25	25m³/h	4.5kW	SUS304 / Carbon Steel	Paper Mill / Textile
DAF-50	50m³/h	7.5kW	SUS304 / Carbon Steel	Municipal Wastewater

—Dissolved Air Flotation DAF Filtration PROCESS FLOW DIAGRAM | working principle:

—Advantages of Dissolved Air Flotation | Key Features:

Extremely high srcaping speed (2-3 times faster than conventional design) and safty operation because of using fully reverse and closed scraper.
High hydraulic load and low footprint because of horizontal plates in the separation zone, more effective separation and optimization hydraulic flow in the separation area.
Better outlet water quality because of W-shape sludge sedimentation hopper.
Effectively minimize chemical consumption because of re-flocculation performance of reverse scraping design
No blind angle in scum collection chamber.

—Technical Data Sheet for dissolved air flotation in water treatment:

Mode	Capacity (m³/h)	Air dissolving water (%)	Motor power (kw)	Scrape power (kw)	Air compressor power (kw)	Air dissolving tank (mm)	Dimension (LWH)
KPDAF-5	4-5	35	3	0.37	1.5	400*1000	330018002200
KPDAF-10	8-10	35	3	0.37	1.5	500*1512	400021002200
KPDAF-15	10-15	35	3	0.37	1.5	500*1512	440021002200
KPDAF-20	15-20	35	7.5	0.37	1.5	500*1512	460024002200
KPDAF-30	20-30	35	7.5	0.37	1.5	500*1512	520026002400
KPDAF-40	30-40	35	7.5	0.55	1.5	600*1880	600026002400
KPDAF-50	40-50	35	7.5	0.55	1.5	600*1880	700026002400
KPDAF-60	50-60	35	7.5	0.55	1.5	600*1880	760028002400
KPDAF-70	60-70	35	7.5	0.55	1.5	650*2034	840028002400
KPDAF-80	70-80	35	7.5	0.55	1.5	650*2034	920028002400
KPDAF-100	90-100	35	7.5	0.55	3	700*1980	1000028002600
KPDAF-150	125-150	40	22	1.1	3	700*1980	1350028002600
KPDAF-200	175-200	40	22	1.1	3	800*2100	1580028002600
KPDAF-300	250-300	40	37	1.1	5.5	800*2100	1920034002800

Success Case: 95% Oil Removal for a Large Dairy Plant

The Challenge: A dairy processing facility was facing heavy fines from the local government because their wastewater contained excessive amounts of milk fats and proteins (TSS). Their traditional settling tank was unable to separate the emulsified fats.

Our Solution: Kopay International designed and installed a KDAF-30 Dissolved Air Flotation System combined with an Automatic Polymer Dosing Unit.

The Results:

Compliance Achieved: The plant reduced its TSS from 2,500 mg/L to under 50 mg/L.
Oil & Grease Removal: 98% of emulsified fats were removed at the DAF stage.
Cost Savings: By reducing the organic load, the factory saved 30% on downstream biological treatment costs.

Industry Applications

Food Processing: Slaughterhouses, meat packaging, and snacks production.
Dairy Industry: Milk, cheese, and yogurt processing.
Petrochemical: Oil-water separation in refineries.
Textile & Dyeing: Removing color and suspended chemical solids.
Paper & Pulp: Fiber recovery and white water clarification.

Choosing the right DAF depends on your chemical reaction. Send us your wastewater analysis report (COD, TSS, and Oil content), and Kopay’s technical team will provide a recommended DAF model and a chemical dosing scheme to ensure your water meets discharge standards.”

Free DAF Sizing & Jar Test Consultation