Superficial air flotation in paper mill wastewater treatment

Superficial Air Flotation in Paper Mill Wastewater Treatment Product Description Principle of HDAF   The HDAF Separator provides effective separation of suspended solids, fats, oils and greases from liquids by dissolved air flotation. Flotation of the solids is accomplished by the introduction of tinny air bubbles into the process water. As the bubbles rise, they attach themselves to the particales in suspension and carry them to the surface for removed.   Main advantage 1. Lamella plate technology increases the effective area of the unit giving an enhanced hydraulic capacity. 2. Sturdy and compact with a significantly smaller footprint than most conventional units. It occupies only half of traditional DAF system, but SS removal rate is much higher than conventional unit. 3. Heavy duty scrapers and sludge concentration ranging from 30g/L to 100g/L. 4. Integrated chemical reaction system and dosage will be reduced 10%-30%. 5. No blind angle in scum collection chamber.   Features of HDAF-100 1. Design treatment capacity: 1~100 m3/h. 2. High-rate clarifier for medium to low SS water (light particles, oil and colloid).  3. Fully(100%) manufactured in the factory, and no need secondory welding. It costs 3h for 2 manpower to assemble.
4. Indoor or outdoor layout (environmental temperature should be over 0°C). 
5. Apply to automatic & continious operation.
6. Design life: Carbon steel material >10 years;
                       Stainless steel material >20 years.   Use of HDAF-100  Corresponding water quality: high SS, and  the specific gravity of suspended solids or contaminants is generally close to or less than water, settle slowly, persist by remaining in suspension, or have a tendency to float, like
Textile Industry,
Oil and Fats,
Food Industry effluents with high solids concentration,
Dairies,
Algae-laden water,
Landscape water treatment, etc.                                     Specificationsof HDAF-100

Category	Description
Tank	Q235B Tank
	Q235B Reinforcement
	SUS304 Clean water Collection pipe
	UPVC Lamella Plate
	SUS304 Effluent Channel
	Adjustable Liquid Level Gauge

Carbon Steel surface finish and corrosion treatment 1. Sand Blasting/ Shot Peening, ISO Sa≥2.5,epoxy Zinc Rich Primer, 50μm/coat. 
2. Internal:  a) Epoxy Zinc-rich Primer, 50μm/coat×1; 
                    b) Epoxy Mastic Paint, 100μm/coat×2~3;
                    c) Total film thickness: ≥250μm.                                                                         3. External:  a) Epoxy Zinc-rich Primer, 50μm/coat×1;                      b) Epoxy Micaceous Iron Intermediate Paint, 50μm/coat×1;
                    c) Polyurethane Finish, 50μm/coat×1; 
                    d) Total film thickness: ≥150μm.   Spraying Method: High-Pressure Airless Spraying Device Color: Light Sea Blue (PANTONE No.RAL5015),or according to customers’ demands.     Standards for Interface Flange   China: JB/T81-1994, PN 1.0   America: ANSI  150   Japan: JIS 10K                         Vulnerable Part and Its Replacement Cycle

No	Category	Replacement Cycle
1	Dissloved Air Pump Mechanical Seal ( one for free )	6000~10000h
2	Solenoid Valvel ( one for free )
3	Chain ( ten segment for free )	20000~30000h

                                  Optional inclusions for HDAF-100

No	Category	Desription
1	Tank Material	SUS304, SUS316, Duplex Stainless Steel
2	Pipe material	Q235B Line with Rubber, PVC, SUS304, SUS316,  Duplex Stainless Steel
3	Pump brand	CNP, GSD PUMP
4	Protection grade of electric equipment	according to circumstances, even for IP55
5	Explosion-proof	if required

Our Services 1. Detailed installation manual and maintenance guideline are provided with the equipment. 2. Technical training and site-commissioning are available for you. 3. Any equipment issue, we will stand by. However, the visa fee, air tickets, accommodation, wages will be paid by buyers.     FAQ 1. How to choose the ideal products? A: Provide us detail about your water sources, water quality, flow rate and ground area, we will analyze for you and recommend you the best water purification solution. 2. How to pay? A: TT and L/C are acceptable while TT will be more appreciated. 30% deposit before producing, 70% balance before loading by TT. 3. What is the time of delivery? A: It depends on order quantities. Generally speaking, the delivery will be 4 to 6 weeks. 4. How you pack the products? A: We use standard package. If you have special package requirements, we will pack as required, but the fees will be paid by customers. 5. How you prevent your equipments from corrosion? A: We use the world-famous paint, like Sigma Coatings, Pain Bow, etc. Besides that, we paint strictly according to the standard process. 6. How you produce your device? /What’s your manufacturing advantages? A:We are familiar with machining technology including laser/plasma cutting, automatic welding, CNC cutting and bending. 7. How to install after the equipments arriving destination? A: We will provide detailed illustrations to you. If it is necessary, we will send technicians to help you. However, the visa fee, air tickets, accommodation, wages will be paid by buyers.