Combination Flotation Wastewater Treatment Equipment

QF Combination Flotation Wastewater Treatment
 
APPLICATION
In the treatment process of water supply and drainage, solid-liquid separation technology and equipment is one of the key items. To remove the small suspended solids with a specific gravity smaller or closer to water, Flotation is one of the most effective and convenient method.
 
PRODUCT FEATURES
Small footprint, Low energy consumption, Easy to operate, Simple management.
 
The high efficiency of dissolved air, Stable and Effective treatment, Machinery, Power, Appliance integrated.
 
The device uses FA dissolved air system, The result of air dissolving is 90%, while the size of the device is only-fifth of the general dissolved air system, and the device has excellent anti blocking ability.
 
The device uses new air releasing system, it provides good quality air release, Mean diameter of microbubbles is only 15 to 30 microns.
 
The device uses the chain plate scraper which operate smoothly and effectively.
 
STRUCTURE AND OPERATION PROCESS
QF combination flotation system contains flotation main pool, dissolved air unit, dissolved air backflow unit, dissolved air releasing unit, Scraper (can be equipped with chain style or movable style), and electric control system.
 
The floatation separation technology explanation: The air and water in a certain working pressure, the air dissolved in water, and strive to become saturated, and then release/decrease the pressure of the air dissolved water, it produce a large number of micro air bubbles. The micro air bubbles fully contact the suspended particles in the water, the suspended particles adhere to the bubbles, float up to the surface, and then become scum. The scraper removes the scum. In this way, the water is purified.
 
The main purpose of flotation is solid-liquid separation. Besides that, the flotation also decrease to some extent the COD,BOD and chroma. Add flocculant (PAC) or coagulant (PAM) into the raw water, after the effective flocculation reaction (time, dosage and effect shall be determined experimentally), the raw water goes into combination flotation contact area. In the contact zone, the floc from raw water marry to the micro-bubbles from dissolved air water, and then went into the separation zone. Under the buoyancy of the bubbles, the floc together with air bubbles float up to the surface, become the dross, be moved to the sludge zone by the scraper. The underneath clean water flow to the clean water tank through water collect pipe. Part of the clean water return to be used in dissolved air system, others will be discharged.
 
APPLICATIONS
Flotation as a water treatment technology has been widely used in sewage treatment and water purification works, the equipment used in:

1. Remove the algae and dirt in the water from river or lake, purify it to become drinkable water or landscape water.

2. Pretreatment to the domestic sewage, and sludge concentration.

3. Industrial water treatment: Paper industry, pulp recycling and clean water reuse; Printing and Dyeing industry, remove chroma and impurity from waste water; Electroplating industry, remove heavy metal ions in electroplating wastewater; Oil refining industry, refine waste water, oil separation; Leather industry, remove impurities; chemical, food, wool spinning, slaughtering, brewing, mining, washing and other industrial wastewater treatment.
 
QF series combination flotation technical data