Super-oleophylic water purification composite adsorbent and preparation method thereof

Abstract

The invention discloses a super-oleophylic water purification composite adsorbent and a preparation method thereof, and relates to the technical field of new materials. The method comprises the following steps: preparing a composite adsorbent by using semi-coke prepared by thermal decomposition of low-rank coal as a raw material, grinding the semi-coke, soaking the semi-coke in a sodium hypochlorite solution, and performing pretreatment under the conditions of illumination, sealing, heating and ventilation; and sintering pretreated semi-coke powder, soaking the semi-coke powder in a copper nitrate solution before sintering, slowly introducing alkali steam while heating during sintering, carrying out sealed heating and continuous sintering after alkali steam introduction, sintering for a period of time after sealing, and carrying out high-speed alkali steam ventilation to obtain the super-oleophylic water purification composite adsorbent. The super-oleophylic water purification composite adsorbent prepared in the invention not only is relatively high in porosity and good in adsorption performance, but also can fix adsorbed oil and reduce redissolution after soluble grease is adsorbed, and also has antibacterial performance.

Description

technical field [0001] The invention relates to the field of new materials, in particular to a super-lipophilic water-purifying composite adsorbent and a preparation method thereof. Background technique [0002] Oily wastewater can soak into the pores of the soil to form an oil film, resulting in blockage, which prevents air and water from penetrating into the soil, which is not conducive to the growth of crops, and even causes the crops to die; oily wastewater will form an oil film on the water surface after being discharged into the water body, hindering Oxygen migrated to the water body will cause aquatic organisms to die due to severe hypoxia; and oily wastewater discharged into urban sewage pipes will have adverse effects on pipelines, auxiliary equipment, and urban sewage treatment plants. [0003] Most of the oil in the wastewater can be skimmed in the form of slick oil. Although the oil and water are separated from the emulsion treated by chemical treatment, the oil ...

AI Technical Summary

Problems solved by technology

[0002] Oily wastewater can soak into the soil pores to form an oil film, resulting in blockage, which prevents air and water from penetrating into the soil, which is not conducive to the growth of crops, and even causes the crops to die; oily wastewater will form an oil film on the water surface after being discharged into the water body, hindering Oxygen migrates to the water body, causing aquatic organisms to die due to severe hypoxia; and oily wastewater is discharged into urban sewage pipes, which will have adverse effects on pipelines, ancillary equipment, and urban sewage treatment plants.

[0003] Most of the oil in the wastewater can be skimmed in the form of slick oil. Although the oil and water are separated from the emulsion treated by chemical treatment, the oil content in the effluent cannot meet the discharge requirements; this application prepares a Super lipophilic water purification composite adsorbent, with antibacterial properties, can be used to purify oily wastewater, so that the oily wastewater after skimming and chemical treatment can be adsorbed by the adsorbent to meet the discharge requirements

Images