Circulating treatment system for high-ammonia-nitrogen wastewater

Abstract

The circulating treatment system comprises an air floatation tank, a plurality of in-line rotating shafts are arranged in the air floatation tank, any rotating shaft is sleeved with a hollow exchange pipe, staggered convection holes are formed in the surface of the exchange pipe, the surfaces of the convection holes are covered with gas-liquid exchange membranes, and the gas-liquid exchange membranes are arranged in the air floatation tank. The upper part of any exchange pipe is communicated with a liquid inlet manifold, the intersection of the liquid inlet manifolds is communicated with a liquid inlet header pipe, a liquid inlet pump is arranged above the liquid inlet header pipe, a heating device and a gas explosion pipeline are arranged in the air floatation tank, and a one-way water inlet valve is arranged at the communication part of the liquid inlet manifold and the exchange pipe; compared with the prior art adopting a physicochemical method, a biochemical combination method and a novel biological denitrification method, the technical scheme has the advantages that heating exchange treatment is carried out by utilizing a creative high-temperature differentiation method, so that rapid purification in the heating and stirring processes is realized.

Description

Technical field [0001] The present invention belongs to the field of wastewater treatment, and is specifically a circulating treatment system for high-amamine nitrogen wastewater. Background technique [0002] At present, the method of ammonia nitrogen separation treatment in wastewater mainly has the following: one is a physical chemical method, which includes blown release, ion exchange method, folding point oxidation, wet oxidation, chemical precipitation, membrane filtration and high temperature evaporation method The main problem of this method is that the processing efficiency is low, the processing cost is high. The actual application is not high; the second is the process of dealing with high concentration ammonia nitrogen wastewater at home and abroad. It is first to strip the high concentration waste water. Blowing pull the ammonia nitrogen in wastewater below 300 mg / L, treated with the A / O method, and then treated with decolorization, although it can achieve emissi...

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Problems solved by technology

[0002] At present, there are mainly the following methods for the separation and treatment of ammonia nitrogen in wastewater: one is physical and chemical methods, which include stripping methods, ion exchange methods, break point oxidation methods, wet oxidation methods, chemical precipitation methods, membrane filtration methods and high temperature evaporation methods , the main problems of this method are low treatment efficiency, high treatment cost, and low practical application and promotion value; Blow off to reduce the ammonia nitrogen in the wastewater to below 300mg / L, treat it with the A / O method, and then use the decolorization method. Although this method can use the ammonia nitrogen separation in the high-concentration wastewater to meet the discharge standard, the treatment process of this method Long, low processing efficiency, high processing cost

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