First, an overview

Dissolved air flotation machine device is mainly used for solid liquid or liquid liquid separation of a kind of water treatment environmental protection equipment products. The flotation device is by dissolved gas and release system in water produce large quantities of fine bubbles, the adhesion in wastewater and the density of water close to the solid or liquid particles, resulting in the overall density lower than water, and rely on the buoyancy to enable it to rise to the surface, so as to achieve solid - liquid or liquid - liquid separation to. High efficient air flotation equipment introduction of new technology in Japan, using the high efficiency pump will mix with water, gas dissolved under pressure to form a water soluble gas, release vacuum, micro bubble precipitation and suspended particles, adsorption float, so as to achieve solid-liquid separation.

Two, dissolved air flotation machine features

1 air dissolving pump and suction water pump suction, pressure in mixing, dissolving high efficiency, fine bubbles is less than or equal to 30um.

2 low pressure operation, dissolved air efficiency of up to 99%, the release rate of up to 99%.

3 the effective adsorption of micro bubbles and suspended particles increased the removal efficiency of SS.

4 dissolved gas water solution efficiency of 80-100%, 3 times higher than the traditional dissolved air flotation efficiency.

5 pressure - volume curve is smooth, easy to realize automatic control, easy to operate, easy to maintain, low noise.

Three, process flow

Four, high efficient air flotation machine equipment

1 high efficient air flotation system

Flotation system influent sets, flocculation, separation, water harvesting, water in one, with the traditional flotation equipment similar, with a steady flow chamber, dissolved gas release chamber, the processing performance is more stable, the effect is more superior, for the transformation of traditional equipment is particularly appropriate.

Stability: through the folded plate reaction of raw water, flow rate is very high, if direct and dissolved gas water contact, dissipation of tiny bubbles, bubble influence stick attached floc block effect, thereby reducing air flotation treatment efficiency, if the increase in the steady flow chamber, the turbulent kinetic energy of water consumption, uniform into the dissolved gas and water releasing compartment, effectively ensures the removal effect.

The air dissolved releasing room: dissolved gas release chamber and the separation chamber in a tank. Middle separated, dissolved air water and flocculation of the raw water in this adhesion, slowly rising, into the air flotation separation chamber, to ensure that the flocculation and tiny bubbles of contact space and time, so that the release rate of dissolved gas water up to 80-100%

2 dissolved air system

For flotation machine equipment, air dissolving system like is the "heart" of the air flotation equipment, air flotation equipment is the main components, at this stage, gas and water in the inlet of the pump inhaled together, the solution in the tank mix into water soluble gas compression shear impeller, two-phase charge mixture and reaches saturation, the entire solution gas system maximum gas content up to 10%, and the solubility of the gas was 100%, the gas diffusion in the micro air bubble distribution uniform, average bubble diameter less than 30um. The dissolved air system is an improvement of traditional air floatation and technological innovation, which improves the separation efficiency of air floatation and greatly reduces the cost of production and operation of equipment.

3 slag scraping machine

The running mode and speed of the slag scraping machine directly affect the water quality of air floatation effluent and the solid rate of sludge. The system uses a rotary scraper slag machine, the scum continuous evenly scraped into the scum trough, reducing the scum of the collision between the phenomenon; in addition, height adjustable scraper can better adapt to a variety of operating conditions, reduce the water content of sludge.

4 control system

Control system uses advanced electrical components to ensure the effective operation of the equipment.

5 supporting equipment

Flotation reagents and dosing equipment is to ensure that the treatment effect is an important factor, we can according to the needs of users provide supporting dosing device and to optimize the combined reagent.

6 the applicable scope of dissolved air flotation device

Papermaking wastewater treatment and recycled fibre, printing and dyeing wastewater treatment, electroplating and other containing a variety of heavy metal ions in wastewater processing, oily wastewater treatment, treatment of tannery wastewater, chemical wastewater treatment, paint wastewater processing, food processing wastewater, biological treatment of mud and water separation, low-temperature low turbidity surface water treatment, containing algal surface water treatment and other kinds of wastewater of solid and liquid separation

Five, equipment parameters