Dissolved Air Flotation Equipment

DAF

Dissolved Air Flotation
Equipment

Desalination plants, Wastewater, Rivers, Lakes &
Sludge Lagoons Purification

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DAF

Dissolved air flotation equipment Product Description

The DAF System , high efficiency dissolved air flotation（DAF Unit） is composed of high efficient air dissolving system and designed according to the fifth-generation of solid-liquid separation technology, which make the Benenv dissolved air flotation equipment (DAF) very efficient in removing organic and inorganic suspended matters, flocs, oil and grease from sewage, wastewater ，industrial effluent, rivers purification, seawater desalination process and used in many other applications as a clarifying and purifying system.

High-efficiency nano-scale bubble generation technology
High performance dissolved air technology, efficiency can reach more than 95%
No Clogging
Modular system, can reach the capacity of 1000t/h per set
High-efficiency water collection
Laminar flow separation technology to form secondary flocculation reaction,high separation efficiency
Stable operation,auto and unattended control
Hydraulic load higher than 7~10m³/m²·H

Dissolved air flotation equipment Product Characteristics

Application Areas

Industrial wastewater treatment

Oil-Water separation of oily wastewater

Concentration of activated sludge

Recovery of useful matters from wastewater

Used as secondary clarifier

Renovation project of municipal wastewater

Industrial wastewater / reclaimed water reuse

Rivers and surface water purification

Structure Principle

The terminology of dissolved air flotation in wastewater doesn’t mean what it sounds, in fact when oxygen from air is pumped into wastewater or contact with wastewater, the water molecules form bonds (Van der Waals forces) with the oxygen molecule and the oxygen molecule is “caged” by water molecules like this:

W = water O = oxygen

WWW - WOW - WWW

Air is trapped in water in micro size, and it's called dissolution (or dissolved). Micro air bubbles in Benenv high efficiency DAF size is: 5 – 8 μm The adherence of suspended solids to bubbles is easier and more intensive, the smaller the bubbles are. Because of the improved adherence capacity of small microbubbles, the saturation of the introduced air as well as the reduction capability of particles lead to an improved suspended solids reduction, a higher solids content in the float sludge and a more stable float sludge on the surface of the micro-flotation cell.

◆ DAF Separation Mechanism

◆ DAF System Process

DAF System Schematic Diagram

System Schematic Diagram

Hydraulic load higher than 7~10m³/h·m²

Modular system, can reach the capacity of 1000T/H per set

DAF Equipment Model Specification

Model	Capacity (T/H)	Dimensions (mm)	Empty weight (T)	Running weight (T)	Installed power (kW)	Operating Power (kW)
BN-DAF1	1	2100x500x150	1.1	3.5	1.6	1.27
BN-DAF3	3	2350x1000x1600	3	8	4.75	4.42
BN-DAF5	5	2800x1000x2100	3	8	4.75	4.42
BN-DAF10	10	3200x1200x2200	4	12	4.75	4.42
BN-DAF25	25	5000x1500x1350	5.5	21	5.65	5.52
BN-DAF50	50	6500x2000x2500	7	36	8.5	7.65
BN-DAF80	80	7600x2600x2600	9	55	11.05	10.2
BN-DAF100	100	8300x3000x2600	12	70	16.2	14.9
BN-DAF150	150	10000x3600x2850	16	110	21	19.3
BN-DAF200	200	12800x3000x3000	26	160	25.9	23.5

Dissolved Air Flotation System Project Cases

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Benenv Group

Benefit the Environment

Beneny Group has more than 10 subsidiaries, with total assets of morel than 80 million USD. Benenv has more than 60 national patents and a number of international certifications, such as ISO9001 international quality system certification, CE EU certification, Ecovadis certification, etc.

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