Water Treatment/Sewage/Waste Water Treatment/Oil Water Dissolved Air Flotation Machine

Product Description

QDEVU is a wastewater treatment company with more than 20 years of experience, whose reputation is based on cost-effective and reliable modular products. We design water treatment plants and create systems of cleaning solutions to reuse water for agricultural and industrial applications.

EVU DISSOLVED AIR FLOTATION UNIT

 

DISSOLVED AIR FLOTATION UNIT BRIEFING
 

Dissolved Air Flotation is a proven and effective physical/chemical technology for treating a variety of wastewater streams

DAF systems are designed to remove total suspended solids (TSS), biochemical oxygen demand (BOD), and oils and greases (O&G) from a wastewater stream. Contaminants are removed using a dissolved air-in-water solution produced by injecting air under pressure into a recycle stream of clarified DAF effluent. This recycle stream is then combined and mixed with incoming wastewater in an internal contact chamber where the dissolved air comes out of the solution in the form of micron-sized bubbles that attach to the contaminants. The bubbles and contaminants rise to the surface and form a floating bed of material that is removed by a surface skimmer into an internal hopper for further handling.

 

 

DISSOLVED AIR FLOTATION UNIT GOALS

DAF systems are commonly used for the removal of oils & greases and suspended solids to meet a variety of treatment goals including:

• Product recovery and reuse
• Pretreatment to meet sewer discharge limits
• Pretreatment to reduce loading on downstream biological treatment systems
• Polishing of biological treatment effluent
• Thickening of biosolids

DISSOLVED AIR FLOTATION UNIT ADVANTAGES OVER TRADITIONAL METHOD

Some of the advantages over traditional, gravity clarification include:

• Smaller footprint and more rapid implementation
• Higher sludge solids content (4%TS vs. 1%TS) resulting in a much lower sludge volume
• Ability to handle bulking solids that tend to float
• More reliable effluent quality

DISSOLVED AIR FLOTATION UNIT FEATURES

EVU provide unique standard features including:
1 Complete, skid-mounted design for ease of installation
2 Rectangular profile for maximum space utilization
3 Superior performance without the use of plate-pack that can foul or collapse
4 Quality drive and pump components for long-term reliability
5 Large, internal float hopper eliminates the need for an external float tank
6 Available in 304 or 316 SST tank construction
7 Several controls platforms (Motor Starter, Relay Logic,
Integrated Controller,  PLC/HMI)

DISSOLVED AIR FLOTATION UNIT AUXILIARY EQUIPMENT

CHEMICAL MIXING  & DOSING MACHINE

SCREW PRESS SLUDGE DEWATERING MACHINE

Technical Data Sheet

Data Model	EVU-5	EVU-10	EVU-20	EVU-30	EVU-40	EVU-50	EVU-60	EVU-80	EVU-100
Capacity(m^3/h)	5	10	20	30	40	50	60	80	100
Motor power(kw)	/		0.55
Scraper travelling speed(m/min)	/		2.26	2.1	2.3	2.5	2.55	2.64	2.82
Inclined plate quantity (pc)	10	15	38	46	50	56	58	60	64
Inclined plate size(mm)	1060*1200	1350*1465	750*1600	900*1600	1050*1600	1110*1600	1150*1800	1200*1200	1300*2000
Equivalent settling area(m^2)	6.36	14.83	22.8	33.12	42	49.7	60.03	72	83.2
Length (mm)	2400	3000	3750	4050	4340	4525	4725	4975	5175
Width (mm)	1340	1740	2220	2520	2820	3090	3190	3290	3490
Height(mm)	3050	3200	4650	4650	4700	4900	5100	5330	5330
The height from inlet pipe to ground (mm)	1300	1250	3350	3350	3350	3600	3650	3825	3825
The height from outlet pipe to ground (mm)	2550	2680	3400	3400	3450	3450	3650	3825	3825
Inlet pipe(mm)	DN80	DN100	DN125	DN150	DN150	DN150	DN150	DN200	DN200
Outlet pipe(mm)	DN80	DN100	DN125	DN150	DN150	DN150	DN150	DN200	DN200
Sludge discharge pipe(mm)	DN150		DN200
Inspection manhole(mm)	/		DN600

 

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