Press the water can be divided into: advection dissolved air flotation machine, upflow dissolved air flotation dryers and comprehensive formula dissolved air flotation machine. Dissolved air flotation device Scope: paper waste water treatment and fiber recovery, printing and dyeing wastewater treatment, such as electroplating wastewater containing heavy metal ions, oily wastewater treatment, tannery wastewater treatment, chemical wastewater treatment, paint wastewater treatment, food wastewater treatment, sludge biological treatment, water separation, low temperature and low turbidity of ground water, surface water containing algae, solid-liquid separation and so many other wastewater. DAF suitable for treating low turbidity, high color, high organic content, low oil content, the amount of active substance or with a low surface algae-rich water. Compared to other flotation way, it has a hydraulic load is high, the cell body is compact and so on. Winter Maintenance: First, when you go to work every day to check into the dissolved air flotation machine sewage pumps and return pump is frozen, including the fuel pump lubrication, packing tightness, sealing the bottom valve of oil and other than filling the air compressor. Second, check whether the compressor air filtration cutting on cold, the normal operation of the compressor in order to determine, whether the noises and heat generation. Third, check the scraping residue machine transmission parts and scraper, in a cold state is hard to break, so as not to affect the use. Fourth, pay attention stirred coagulant storage tank to avoid freezing, and often do sample test. Fifth, for each device to be checked so that the valve pipeline valve pipeline have blocked race, as required, are placed in the "on" or "off" position. Sixth, you must shutdown and clean water discharge to prevent freezing blocked. 

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