Study On The Comprehensive Utilization Of Chemical Sludge Aluminum In Sewage Treatment Plants

Aluminum widely used food additives, pharmaceuticals, water treatment andother aspects coagulant, aluminum and aluminum lost the right move. Plants and humanhealth has increasingly been poisoned people's attention, How to prevent aluminumecological environment and the pollution and damage is currently facing a major task.Chemical sludge aluminum launch a comprehensive range of research also hasimportant practical significance; its integrated, system not only saves resourcesAluminum can avoid the phenomenon of secondary pollution.Based on the Chinese Qilu Petrochemical Corp. owned the plant and the TaihuLake Basin dye emission aluminum sludge for investigation using spectrophotometryaluminum reagents for the detection means to explore as salt water treatment agent inthe course of the loss, loss and its impact factors. On this basis, the typicalaluminum-containing chemical sludge studies, in-depth study acidity, reaction time,temperature, Mixing and mixed with different functional groups of small molecules andother factors on acid-treated aluminum sludge dissolution of the law Find Screening andincrease the effective dissolution of aluminum, of a sewage treatment plant sludgechemical comprehensive utilization of aluminum to provide a scientific basis. This willnot only effectively control the main source of aluminum, aluminum reduce harm to theecological environment, but also contribute to the strengthening of the aluminumrecycling, utilization and resource management.Survey results showed that the use of aluminum salts as a flocculant treatmentproduces a chemical sludge often contains a lot of aluminum. Acidity is the impact ofsludge from the chemical extraction of aluminum key factor Aluminum only when thepH is less than 1.7 can sludge dissolution, when acidity to 4.0mol/L, aluminumextraction largest. Acid leaching aluminum used only for a short time, usually in 4 minafter the dissolution achieves balance. Mixing with the increase in temperature canincrease the rate of dissolution of aluminum. Sludge containing or to add differentfunctional groups as well as small molecular compounds enhance the dissolution of aluminum, Special contain or-OH-OH-NH2 and the coexistence of organic aluminumon the solubilization of the most obvious effects, Solubilization generally above 10%,aluminum and acidity the dissolution extended from 1.7 to 3.0.