Sintering-magnetization-avoiding preparation method of sludge carbon paramagnetic carrier for enhanced biological treatment of sewage

Abstract

The invention provides a sintering-magnetization-avoiding preparation method of a sludge carbon paramagnetic carrier for enhanced biological treatment of sewage, relates to a preparation method of thesludge carbon paramagnetic carrier and aims to solve the problems of unstable magnetism and complicated process of the sludge carbon paramagnetic carrier. The preparation method comprises steps as follows: sludge is concentrated, dehydrated, dried, crushed and carbonized, and sludge carbon is obtained; the sludge carbon is subjected to surface treatment with acid liquor, dried and then subjectedto molding with a paramagnet, a framework material and an adhesive, a mixture is cured, and a semi-finished product is obtained; the semi-finished product is soaked in a sodium alginate solution and dried finally. According to the preparation method, paramagnetic Fe3O4 is directly adopted to be mixed with the sludge carbon, the mixture is cured, so that magnetism is stable, and the carrier structure is stable; carrier materials with different sizes and shapes can be obtained, different application demands can be met, and the applicable range is wide; the method does not require impregnation ofan iron ion solution and sintering magnetization, so that the overall energy consumption and cost are low. The preparation method is applicable to preparation of the sludge carbon paramagnetic carrier.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and in particular relates to a preparation method of a sintering-free and magnetized sludge carbon paramagnetic carrier. Background technique [0002] With the continuous improvement of my country's water environment quality requirements, the effluent standards of urban sewage treatment plants accepted by my country's natural water bodies are becoming increasingly strict. At the same time, economic development and improvement of people's lives have brought about increasing wastewater production. Therefore, , the efficient and low-cost treatment of wastewater is a key issue in the field of wastewater treatment. my country's sewage treatment mainly adopts biological methods, which use the metabolism of microorganisms to achieve the degradation and removal of pollutants. High-efficiency wastewater treatment often requires the assistance of bioaugmentation technology. Bioaugmentation method is a metho...

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Problems solved by technology

[0004] In order to solve the magnetic instability of the sludge charcoal magnetic carrier prepared by the existing sludge charcoal magnetic carrier preparation method and the need for sintering and magnetization to cause complex preparation processes, the present invention further proposes a non-sintering-free bioprocessing method for sewage enhanced biological treatment Preparation method of magnetized sludge carbon paramagnetic carrier

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