| The iron carbon micro electrolysis technology has been used in the actual industrial production widely because of its good performance, the experimental put the micro electrolysis fillers as the main object study, has development of a bimetallic system based on the new three elements micro electrolytic iron carbon filler, and improved the micro electrolysis technology processing efficiency, the paper preparation the new iron carbon micro electrolysis filler, and determination of new iron carbon micro electrolysis packing a series of physical performance parameters is studied by experiment. The research is mainly about new iron carbon micro electrolysis filler in different waste-water treatment efficiency and the improvement of waste-water biochemical; also the study the degradation mechanism through the CV and UV spectral scanning in a preliminary inquiry.The experimental research shows that:(1) New iron carbon micro electrolysis filler by bimetallic alloy fusion and activation is prepared by the use of high temperature micro-porous, its main raw material for iron powder, active carbon powder, cobalt powder, bentonite clay,According to the mass ratio of 56:12:8.85:17:4, Add the amount of 10% water and mix well. The new type of iron carbon micro electrolysis filler was obtained after high temperature baking. Main features of filler for internal structures with abundant micro-pores,and its porosity is larger,the water absorption rate was more higher, and the contact area of the waste-water is larger and smaller bulk density, aeration and reverse wash is very convenient, its has good treatment effect in different kinds waste-water, waste-water of B / C value increased significantly, the biodegradability of waste-water has been improved obviously.(2) The new micro-electrolysis filler of 2, 4-DNP dye waste-water degradation experiments shows that: by adjusting pH, dissolved oxygen content, temperature,conductivity factors respectively, the results showed that, pH = 3, 7, 11, 2,4-DNP dye waste-water degradation rate was 97.7%, 74.1%, 21.2%; new iron-carbon micro-electrolysis filler in the anoxic waste-water environment, the degradation rate was also reach 92.4%; the degradation reaction can be carried out under the normal temperature,.Addition of electrolyte can significantly improve the degradation efficiency of 2,4-DNP waste-water. After degradation treatment,reducing the toxicity of waste-water on the inhibition of microorganisms activity.Subsequent biochemical treatment was carried out smoothly.(3) The optimal process parameters for the removal of 2, 4- DNP by the new type of iron carbon micro electrolysis filler are: the reaction time is 120 min, the in-water pH is 3, the gas water ratio of waste-water was 10:1. Under the optimum laser cladding parameters, the new preparation iron-carbon micro-electrolysis filler has high removal rate of 98.2% for the 2,4-DNP simulated dyeing waste-water, and single zero valence iron and the traditional iron carbon carbon fillers under the same experimental conditions on the removal rate only 8.6% and 81.5%, processing efficiency has higher treatment effect is obviously better than than that of the contrast group. New micro electrolysis filler after running for a long time, there is no obvious compaction caking pH enomenon. Compared with the traditional micro electrolysis filler, in hardening ability has certain advantages.(4)By through of 2, 4-DNP solution in the CV determination, the micro electrolysis fillers of 2, 4-DNP solution electrolysis-chemistry catalytic degradation process. The effects facts of pH, temperature, dissolved oxygen, conductivity test factors in 2,4-DNP degradation process cycle volt ampere curve simulation, analyzes the various influence factors and electrode of the voltage and current changes in the situation, indicating that the new type micro-electrolysis fillers of 2,4-DNP waste-water contains electrolysis-chemistry catalytic reduction. |
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