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Biological denitrification method of wastewater and simultaneous treatment of high concentration of hydrofluoric acid, lead and nitric acid-containing wastewater
Biological denitrification method of wastewater and simultaneous treatment of high concentration of hydrofluoric acid, lead and nitric acid-containing wastewater
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机译：废水的生物反硝化方法及同时处理高浓度的氢氟酸，铅和硝酸废水
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摘要
The present invention provides a biological denitrificn method for wastewater and a simultaneous treatment method of high concentrn of hydrofluoric acid, lead and nitric acid-containing wastewater. The biological denitrificn method of the wastewater is characterized by a high concentrn of nitrate nitrogen (NO3-N)-like wastewater in the presence of a large amount of total nitrogen is treated with a series of continuous cyclic biological denitrificn consisting of an anoxic-anoxic-1 aerobic-aerobic two-Characterized in that the total nitrogen is almost completely removed from the wastewater by treg it with an oxidn system wherein methanol is added in the first and second anoxic tank to convert the nitrate nitrogen to nitrite nitrogen in the first step And the nitrite nitrogen in the second step is NO, N2O, N2And the like, and the wastewater is released into the atmosphere by a small amount of ammonia nitrogen (NH4+-N) and nitrite nitrogen (NO2--N), the nitrificn reaction in the primary anoxic tank is first converted to nitrate nitrogen, and then treated with the series of continuous-cycle biological denitrificn systems. As a result, a high concentrn of nitrate nitrogen (NO3--N), it is possible to remove not less than 95% of total nitrogen from the wastewater containing wastewater, and it is easy to operate wastewater treatment. In particular, it is possible to remove 95% or more of fluorine, In addition, it can be treated in a continuous circuln manner, and a large amount of wastewater can be treated.
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