Harmless treatment method of beer wastewater sludge

Abstract

The invention discloses a harmless treatment method of beer wastewater sludge. The method comprises the following step: adding peroxyacetic acid into the beer wastewater sludge to stir in a closed manner for 0.5-1 hour, wherein the addition of peroxyacetic acid is 11-13% of the weight of the beer wastewater sludge, and the concentration of peroxyacetic acid is 7-11%. The method disclosed by the invention overcomes defects of the existing sludge treatment methods, and is simple in process flow, mild in process control condition and convenient to operate and manage. The loss of nutritional ingredients of treated sludge is less, and the sludge used as a fertilizer does not affect the subsequent microbial fertilizer preparation process. The technical requirements on equipment are simple, the investment is less and the treatment cost is low. The method is convenient for industrial application, safe, non-toxic and free from secondary environmental pollution.

Description

technical field [0001] The invention relates to the field of sludge treatment, in particular to a harmless treatment method for beer wastewater sludge. Background technique [0002] Beer wastewater sludge is the waste left after the wastewater generated in the process of beer production is treated to meet the discharge standard and the water is discharged. Brewery wastewater mainly comes from the wastewater produced in washing, soaking wheat, saccharification and other processes. The main components are sugar and protein. , potassium and other elements, so beer wastewater sludge contains more organic matter and nutrients such as nitrogen, phosphorus and potassium, and the content of toxic substances in the sludge is also low, which can be used as a raw material for the production of high-quality organic fertilizers. [0003] If beer wastewater sludge is to be used as agricultural fertilizer, it must first be treated in a harmless manner to remove the toxic components in it ...

AI Technical Summary

Problems solved by technology

At present, the methods of sludge harmless treatment mainly include the Navaginsk purification facility using comprehensive sludge treatment method, aerobic composting treatment method, anaerobic digestion treatment method, drying method, chlorine dioxide disinfection method and other methods. These methods They have their own specific technological process and advantages, but there are also disadvantages such as incomplete harmless treatment, difficult process control conditions, high requirements for equipment and facilities, poor safety, large loss of nutrients, and secondary pollution of the environment. App is restricted

[0004] For example, the chlorine dioxide disinfection method uses chlorine dioxide as a disinfectant to treat sludge to eliminate pathogenic microorganisms, but in order to activate the disinfection effect of chlorine dioxide, it is necessary to use some auxiliary reagents to pretreat the sludge and adjust the pH of the sludge Value, oxidation-reduction potential and other indicators reach appropriate values, the operation is complicated, and chlorine gas will be generated during the treatment process, which has potential safety hazards and secondary pollution to the environment, and this method has great impact on the material of the equipment used for treatment, airtight performance, pressure resistance, etc. more demanding

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