A non-burning adsorbent for removing organic pollutants in water based on iron-containing solid waste

Abstract

The invention relates to an iron-containing solid waste-based burn-free adsorbent for removing organic pollutants in a water body. According to the adsorbent, iron-containing solid waste with specificcomponents, coal gangue and a binder are used as raw materials, and dry mixing, wet mixing, extrusion forming and natural curing are performed to prepare the baking-free adsorbent for removing organic pollutants in a water body. Wherein the raw materials comprise the following components in percentage by mass: 45-85% of iron-containing solid waste, 5-20% of coal gangue and 10-35% of binder; the iron-containing solid waste is prepared from, by mass, 55%-75% of SiO2, 10%-15% of Fe2O3, 5%-10% of TiO2, 5%-10% of MgO, 3%-5% of organic matter and 2%-5% of others. According to the adsorbent, the synergistic effect of iron-containing solid waste of specific components, coal gangue and active components in a binder is utilized. Meanwhile, a rough adsorbent surface is generated after natural maintenance, and efficient adsorption of organic pollutants in a water body is achieved under the combined action of physics and chemistry. The obtained adsorbent has the advantages of low cost, simple process and high adsorption efficiency.

Description

technical field [0001] The invention belongs to the technical field of water pollution control, and in particular relates to a burn-free adsorbent for removing organic pollutants in water bodies based on iron-containing solid waste. Background technique [0002] In recent years, with the acceleration of urban industrialization, a large amount of wastewater containing organic pollutants such as perfluorinated compounds and polycyclic aromatic hydrocarbons has been produced, and the resulting environmental pollution has become increasingly serious. Relevant studies have shown that organic pollutants such as perfluorinated compounds and polycyclic aromatic hydrocarbons are highly toxic and pose a serious threat to human health. Adsorption is considered to be an effective method to remove organic pollutants such as perfluorinated compounds, polycyclic aromatic hydrocarbons, and organic phosphorus from water bodies. The preparation of efficient and cheap adsorbents has become one...

AI Technical Summary

Problems solved by technology

Although these existing adsorbents have good adsorption effects on perfluorinated compounds and polycyclic aromatic hydrocarbons, their cost is relatively high and the preparation process is complicated.

At present, there are relatively few reports on the preparation of non-burning adsorbents for purifying organic pollutants such as perfluorinated compounds and polycyclic aromatic hydrocarbons in water using cheap solid waste with fixed components as the main raw material.

Images