Method for treating sewage of aluminum alloy cooker

Abstract

The invention discloses a method for treating sewage of an aluminum alloy cooker. The method comprises the following steps: 1, installing a pipeline in a sludge thickening tank so as to convey sludge in the sludge thickening tank into a spraying biochemical sewage adjusting tank; 2, regularly discharging sludge generated by the physicochemical treatment of the sewage into a sludge concentration tank to ensure enough sludge in the sludge concentration tank at any time for a spraying biochemical regulating tank to treat the biochemical sewage; 3, pumping the spraying biochemical sewage from a spraying biochemical sewage collecting tank to the spraying biochemical sewage regulating tank; 4, conveying the sludge in the sludge concentration tank into the spraying biochemical sewage regulating tank, mechanically stirring or aerating and stirring for about 30 minutes, and uniformly mixing; and 5, taking the uniformly mixed spraying biochemical sewage, and adding a polyacrylamide solution to see the precipitation effect. The co-precipitation effect of aluminum hydroxide and other precipitates is achieved, a large amount of sewage and sludge treatment cost is saved, the production efficiency is improved, resources are saved, and the environment is protected.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a sewage treatment method for an aluminum alloy cooker. Background technique [0002] At present, a large amount of physical and chemical sewage is produced in the process of etching and cleaning in the production of aluminum alloy cookware, and organic solvents and paints are scattered in the spraying of the pot body to produce sprayed biochemical sewage. deal with. The existing spraying biochemical sewage treatment adds sulfuric acid to adjust the PH value and the number 2 is the best demulsification, then adds compound alkali, coagulant sedimentation, and the sedimented sludge is discharged into the sludge concentration tank, and then pumped to the filter press to press the slag and dry the sludge Hand it over to a qualified environmental protection company for treatment. After the outlet water is clear, it will enter the next step of anaerobic and aerobic treatment....

AI Technical Summary

Problems solved by technology

The existing spraying biochemical sewage treatment adds sulfuric acid to adjust the PH value and the number 2 is the best demulsification, then adds compound alkali, coagulant sedimentation, and the sedimented sludge is discharged into the sludge concentration tank, and then pumped to the filter press to press the slag and dry the sludge Hand it over to a qualified environmental protection company for treatment. After the outlet water is clear, it will enter the next step of anaerobic and aerobic treatment. However, acid is added first for demulsification, then alkali is added, and then coagulant is added, which consumes a lot of cost and requires new sludge treatment. cost