Sewage biochemical treatment transforms organic pollutants into harmless gaseous products (e. G. C02, n02, n2), liquid products (e. G. Water) and solid products rich in organic matter (biofouling), through micro-organisms, where biofouling is deposited in sediments and removed from purified sewage。
There are a variety of biological treatment methods for sewage, and current exposure is the third type of exposure following wind exposure and mechanical exposure. It applies to municipal sewage and to the treatment of waste water in the organic industry at lower concentrations. The emission-exposure device, consisting of a liquid gas current pump, is a new oxygen-filling device, which is one of the main uncertainties in the sewage treatment technology and works by dispersing oxygen in the air through the operation of the liquid current, providing energy for the active sludge that decomposes harmful substances。
Emission is a new exposure technique with the following advantages: high total oxygen transfer factor, high oxygen utilization factor, high oxygen power transfer factor; high mixing factor; improved sedimentation performance of sludge, short exposure time; simple equipment construction, processability, reliability of work, flexibility and ease of decay; general nozzle 20 mm in diameter, which is not susceptible to congestion and maintenance management; fast aerobics, low power consumption, low operating costs and small area; when a self-inhaled ventilator is used, the wind dryer can be removed to eliminate noise pollution. As a new energy-saving and environmentally friendly technology, it has great potential to be applied in biochemical treatment works such as paper, printing, hospitals and municipal sewage。
With the development of science and technology, a new type of exposure device, the self-inspiration self-inflicted self-influencing pulse ejection, has emerged, using self-inflicted oscillating cavities to replace the mixing tubes in existing emitors, to allow the inhaling air and aerobic bodies to obtain sufficient mixing, mixing and oxygenation in the self-influencing cavity chamber and to be released through special proliferation tubes by pulse. Theoretical analysis and industrial preliminary experiments showed that the exposed gas had excellent mixing, mixing and exposure properties, and that the aerobic water bodies ejected from the diffuse tube had strong pulse effects. Research on such devices plays an important role in water conservation and pollution management and will better serve environmental protection。
