Method and device for improving oxidation efficiency of ozone-aeration biological filter combination system
A biological aerated filter, ozone oxidation technology, applied in chemical instruments and methods, oxidized water/sewage treatment, water/sewage multi-stage treatment, etc. Mass transfer efficiency, the effect of increasing the degree of mixing
Active Publication Date: 2012-12-19
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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[0004] Aiming at the problem of low ozone utilization rate in the existing combined treatment process of ozone oxidation and biological aerated filter, the present invention provides a method for improving the oxidation efficiency of the combined system of ozone-biological aerated filter
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[0020] The following is a further description of the present invention, rather than a limitation of the present invention.
[0021] given below figure 1 The embodiment of the process method for advanced treatment and reuse of textile printing and dyeing wastewater is shown.
[0022] The step flow chart of the method for improving the oxidation efficiency of the ozone-biological aerated filter combined system of the present invention is as follows figure 1 shown. It includes the following steps: the printing and dyeing wastewater treated by physicochemical-biochemical treatment is first sent to the clear water tank to adjust the water volume to ensure a relatively stable flow and pH value of the wastewater, and then realize the partial oxidation of the refractory organic matter in the wastewater in the 5-10m ozone oxidation pipeline, and finally Sent to the integrated ozone-biological aerated filter to continue oxidation and realize biological treatment.
[0023] The dosing ...
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Abstract
The invention discloses a method and a device for improving the oxidation efficiency of an ozone-aeration biological filter combination system. The method comprises various steps including physicochemical-biochemical treatment, pipeline ozone oxidation treatment, integral ozone oxidation and biological treatment. Printing and dyeing wastewater subjected to the physicochemical-biochemical treatment is firstly conveyed to a clean water basin for regulating the water quantity, then, the partial oxidation of degradation-resistant organic substances is realized in a 5-10m ozone oxidation pipeline, finally, the wastewater is conveyed to the integral ozone-aeration biological filter for continuous oxidation, and in addition, the biological treatment is realized. The ozone adding mode combining spraying and oxidation is adopted, meanwhile, the oxidation pipeline is provided with a traverse baffle and a crossed sawtooth belt, the mass transfer efficiency of the wastewater and the ozone can be greatly improved, and the ozone oxidation efficiency is improved. In addition, through the real-time monitoring on the residual concentration of the ozone and the effluent color intensity, the phenomenon of overhigh or overlow ozone adding quantity can be avoided, the remaining time of the wastewater in an ozone contact room can also be effectively reduced, and the treatment efficiency of the system is improved.
Description
technical field [0001] The invention relates to a method and a device for improving the oxidation efficiency of an ozone-biological aerated filter combined system, in particular to a method and a device for advanced treatment of printing and dyeing wastewater by using ozone and a biological aerated filter. technical background [0002] Printing and dyeing wastewater accounts for a very high proportion of the total industrial wastewater discharge, and the wastewater has deep color, high concentration of organic matter, and high salt content. The dye components in wastewater are complex and most of them are based on aromatic hydrocarbons and heterocyclic compounds. Especially in recent years, with the rapid development of the dye industry and the advancement of printing and dyeing finishing technology, more and more organic substances that are resistant to photolysis, oxidation and biodegradation, such as PVA slurry, various new auxiliaries and finishing agents, have been used....
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IPC IPC(8): C02F9/14C02F1/78
Inventor 尹华郭华芳
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI