Treatment device and treatment method for recycling protein and phosphorus from urban domestic sludge and converting reducing sugar

Abstract

The invention discloses a treatment device and a treatment method for recycling protein and phosphorus from urban domestic sludge and converting reducing sugar, and belongs to the technical field of remaining sludge treatment equipment. By virtue of ultrasonic cavitation and a synergistic effect of chemical reagents, the effect of cracking the domestic sludge is efficiently achieved; a sludge cracking solution enters a vertical stainless steel barrel with a hydrotalcite filter, and by virtue of strong phosphorus adsorption of hydrotalcite, phosphorus in the cracking solution is acquired; thendephosphorized cracking solution enters the stainless steel barrel with the hydrotalcite filter, and by virtue of relatively strong affinity between the hydrotalcite and protein, the protein in the cracking solution is acquired; the phosphorus and the protein adsorbed in the filter are further desorbed by respectively added desorbing solutions to obtain a phosphorus concentrate and a protein concentrate; and under the action of cellulase and the sludge protein, the reducing sugar is prepared. Through the treatment device and the treatment method, effective cracking of the domestic sludge can be achieved so as to reduce the sludge, and efficient resource utilization of the domestic sludge can be achieved.

Description

technical field [0001] The invention belongs to the technical field of excess sludge treatment equipment, and in particular relates to a device and method for recovering protein and phosphorus in urban domestic sludge and converting reducing sugar. Background technique [0002] Domestic sludge is sludge produced by urban domestic sewage treatment plants. It is a solid waste with complex components, large output and difficult disposal. At this stage, the construction of sewage treatment plants in my country generally has the phenomenon of "heavy water and light mud". It is urgent to deal with it effectively. [0003] Domestic sewage mainly comes from the drainage system of urban residents' lives and supporting service industries. The pollutant components are relatively single, mainly organic matter (protein, carbohydrates, urea, fat, and surfactants), inorganic matter (including nitrogen, phosphorus, and inorganic salts) etc.; the content of heavy metals and inorganic toxic ...

AI Technical Summary

Problems solved by technology

However, in reality, the development and utilization rate of domestic sludge resources is not high, and most of the research reports only obtain one of the useful substances (such as single extraction of sludge protein, or single acquisition of phosphorus in sludge), resulting in other problems in the development process. loss of resources

Images