Application of papermaking sludge based biological carbon in removal of antibiotics or heavy metals and antibiotics from water body

Abstract

The invention discloses application of papermaking sludge based biological carbon in removal of antibiotics or heavy metals and the antibiotics from a water body and belongs to the technical field ofbiomass treatment and water treatment. The papermaking sludge based biological carbon has larger specific area and a larger pore size and can efficiently remove combined pollution of copper, zinc, arsenic, sulfadimidine, tylosin and roxithromycin. The biological carbon is simple in preparation technology, significant and stable in effect, environment-friendly and free from secondary pollution, andhas a wide application value in a heavy metal/antibiotic pollution repair aspect in the water body. Paper mill sludge difficult to treat is recycled; the environmental pollution problems of wastewater containing the heavy metals and the antibiotics are solved; and therefore, the application has important environmental and economic benefits. The biological carbon has a huge market and an application potential in waste recycling and sewage treatment.

Description

technical field [0001] The invention belongs to the fields of biomass treatment technology and water treatment technology, and in particular relates to the application of papermaking sludge-based biochar in removing antibiotics or heavy metals and antibiotics in water bodies. Background technique [0002] The intensification, scale and mechanization of the livestock and poultry breeding industry are accelerating, making the pollution of heavy metals / antibiotics in livestock manure and sewage produced by it become a major environmental problem that needs to be solved urgently. A large number of studies have proved that biochar, as a new type of environmental functional material containing highly phosphated and aromatized structures, has shown significant advantages in the removal of heavy metals / antibiotics in soil / sediment and aerobic wastewater environments . [0003] The literature "Preparation and Characterization of Activated Biochar from Papermaking Sludge" uses paperm...

AI Technical Summary

Problems solved by technology

However, this literature only involves the adsorption of a single pollutant Pb(II), and does not involve the adsorption effect of paper sludge biochar on the combined pollution of various heavy metals, and does not involve its application in organic pollution control

In the literature "Adsorption and immobilization of heavy metals / antibiotics in water and soil by biochar", biochar prepared from corn and wheat showed strong adsorption capacity for oxytetracycline and copper, but this literature only involved tetracycline antibiotics. Removal, did not mention the adsorption capacity of sulfonamides and macrolide antibiotic pollutants widely present in livestock and poultry sewage, and only studied Cu for heavy metals, and did not involve Cu / Zn / As compound pollution

In order to develop biochar with stronger adsorption capacity and wider application range, combined with the superiority of papermaking sludge as raw material carbon production in the first literature, papermaking sludge based biochar was prepared under high temperature (750°C) and oxygen-limited conditions. Biochar, and its application in the removal of heavy metal and antibiotic complex pollution, has not been reported

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