| Nickel alloy aluminum and aluminum dissolution with sodium hydroxide, obtaining lenny nickel catalyst, production process produce a certain amount of high alumina alkaline mixture, the aluminum after the alkaline cleaning black stain, mainly in the form of partial aluminum acid sodium existence, the mixture of has a large number of sodium hydroxide not reaction. For the above the lye, mainly as a treatment to pH value after discharge standard, it is not only want to consume and potions, and at the same time, the environment, makes water and soil and the content of salt increase aluminum. Creating a huge waste of resources, so for the treatment of wastewater from is an urgent problem. If the comprehensive utilization of waste water, reuse can not only, but still protect the environment, to improve the economic benefit of enterprise has great realistic meaning and application prospect.This paper mainly studies the production rennie nickel in produces in the process of the high alumina alkaline waste management, put forward two methods to solve the problems, one is in the basic composition of the waste analysis of detection based on the crystal of decomposition method with high content of aluminum from recovery of aluminum hydroxide alkaline mixture. A detailed study of the alkaline waste oxidation aluminium, temperature and concentration of time and crystal decomposition coefficient of influencing factors on the influence of aluminum hydroxide recovery, and concludes that the proper technical parameter, and the preliminary to crystal growth mechanism is analyzed. At the same time, use of aluminum hydroxide produced as a seed, used to exhalation more aluminum hydroxide products, make the seed recycling; another side it is using Al-Ni and powders of alkali liquid of liquid aluminum obtained by sodium alkali liquor alkaline coagulants. The study with the alkaline coagulant deal with different wastewater coagulation effect, at the same time and the other of coagulant coagulation effect do contrast experiment analysis-reflects the alkaline coagulant coagulation superiority.The results show" that the crystal kinds high aluminum alkali liquid from the recover}" of aluminum hydroxide technology parameters for:. when the original alkaline waste initial concentration of quality oxidation aluminium105g/L,55℃. the temperature of the seed coefficient is1.7, the decomposition time for36h, the recovery of aluminum hydroxide can reach65%. With homemade aluminum hydroxide for the seed-from high alumina waste recycling aluminum hydroxide alkaline can realize reutilized.reduce the waste alkali liquor and aluminum in the environment to emissions-reduce the pollution of environment, there is tremendous environmental and economic benefits. With high alumina alkaline waste liquid aluminum acid sodium obtained alkaline partial coagulants and deal with the different wastewater, acidic waste water treatment more economic, not only can solve the problem of the pollution of the environment, but also can made the sparsity partial aluminum acid sodium. Just put waste liquid pH value control around13.20you will get in better product, process simple, low cost, has the very good application value. Partial aluminum sodium is alkaline coagulant, in dealing with when acidic waste water best effect, don’t adjust water pH value can play good coagulation effect and usage, need not worry about the target of the remainder of the water, and other traditional coagulants compared with a lot of advantages. |
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