Product Description
CAF (CAF, Cavitation Air Floatation) system is the world's unique patented water treatment equipment. CAF is designed for the removal of industrial and urban sewage grease, gum and suspended solids (SS) and design systems.
Total entire flotation system consists of five parts,
Small inflatable section through the inflow of sewage pretreatment equipped cavitation aerator, microbubbles mixed sewage in the process of rising through the inflatable section and aerators generated on the surface aerator air through ventilation pipes transferred to the water. Aerator works is the use of air delivery tube at the bottom of the high-speed rotating impeller bulk gas in water to form a vacuum region, the air on the input surface water through the aerator, fill the vacuum, the micro-bubbles and consequent rise spiral to the surface, oxygen in the air also will be dissolved in water.
Since the density of the mixture between the gas and liquid water imbalance, resulting in a vertically upward buoyancy, will be brought to the surface SS. Float process, the micro-bubbles will be attached to the SS, SS after reaching the surface will depend on the support and maintenance of these bubbles in the water. Floating on the water is intermittent SS chain scraper to remove. Scraper movement along the entire surface, and the SS from the inlet end flotation tank sludge onto the outlet end of the discharge pipe. Sludge discharge pipe in a horizontal auger, the collected sludge is fed into the mud pool.
Sewage flowing into the overflow tank and then purified gravity to biological treatment section.
Open return pipe segment extending from the aeration tank along the bottom of flotation. While generating microbubbles, cavitation aeration opportunity with a reflux tube bottom forming a negative pressure zone, this negative pressure causes water from the bottom to the aeration zone reflux, and then returns flotation segment. This process ensures that the sewage reflux and the absence of water in the flotation section of about 40% can still work.
Our Advantages
Advantages of the system
Saving investment
CAF no pressure vessels, air compressor, circulation pumps and other equipment, thus less investment in equipment.
Small equipment footprint, reduce construction investment. Q = 200m3 / h of CAF (CAF) equipment covers only 36.15m2.
The system because there is no pressure vessels, air compressor, circulation pumps and other equipment, which saves power consumption. Q = 200m3 / h of CAF (CAF) system energy consumption is only 5.435KW, and dissolved air flotation (DAF) system power up to 65KW.
CAF (CAF) system is very easy to operate, there is no complex equipment, and therefore very little manual operation and maintenance workload and reduce labor costs and maintenance fees.
Petroleum, suspended solids (SS) removal efficiency over 80%.
BOD and COD removal efficiency of up to 60%. The dissolved air flotation (DAF) system for BOD and COD removal can only reach about 35%. Can promote the oxidation of sulfide to reduce the sulfur content in wastewater.
The system is very easy to operate, no complicated equipment; the whole system consists of only two mechanical parts, unlike the dissolved air flotation (DAF) system includes a pressure vessel, air compressors, circulating pumps, and many other essential equipment.
And dissolved air flotation (DAF), bulk air flotation (IAF) economic comparison of the comparison to 2000t / d, no chemical feed equipment for the foundation,
The value of design parameters
Residence time of 15 ~ 20min. Surface load 5 ~ 10m3 / (m2 ? h). Pool water depth is not more than 2.0m, the aspect ratio of not less than 4 pond.
Detailed Photos
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