Self-cleaning water permeable brick with adsorption and purifying function and manufacturing method thereof

Abstract

The invention discloses a self-cleaning water permeable brick with the adsorption and purifying function. After being carbonized, sawdust is ground at room temperature, a photocatalysis material nanometer titanium dioxide is adsorbed on the surface of a pore, hydroxyl free radicals, superoxide ion free radicals and H2O free radicals are generated during light irradiation and have high oxidization and degradation capacity, various organic matter is directly oxidized into CO2, H2O and other inorganic small molecules, automobile exhaust in atmosphere can be degraded when the sawdust is applied to the water permeable brick, and high adsorption performance is achieved. Modified sugar filter sludge serves as a pore forming agent, waste sand, heavy calcium and peat soil serve as aggregate, the water permeable brick prepared after high-temperature sintering is large in porosity, the adsorption purification performance is excellent, and the water permeable brick has the advantages of being high in strength, good in abrasion resistance, low in cost and environmentally friendly and can be widely applied to pavements, parks, squares, gardens and other places.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a self-cleaning permeable brick with adsorption and purification functions and a manufacturing method thereof. Background technique [0002] With the continuous shortage of urban water resources and the pursuit of humanization of the urban environment, the research and development of permeable bricks has attracted extensive attention from experts in materials, environment and municipal engineering. Permeable bricks have good water permeability and moisture retention, which can well alleviate the "urban desertification" and "heat island effect" caused by the city being covered by non-permeable ground pavement. It can also alleviate urban waterlogging to a certain extent and replenish urban groundwater. , regulate the urban environment, and help maintain the urban water balance. Existing permeable bricks are developing towards high density and high strength, and their c...

AI Technical Summary

Problems solved by technology

Existing permeable bricks are developing towards high density and high strength, and their compressive strength is relatively high, but there are still many defects. On the one hand, the water permeability is very poor. Even if there are bricks with good water permeability, their compressive strength can reach It does not meet the pavement requirements. At the same time, after long-term use of permeable bricks, the surface and pores are easy to fall into various dirt to form blockages and cannot be automatically cleared, which weakens the permeable effect, poor ecological effect, and the requirements for drainage facilities during use. Higher, if the drainage is not smooth after the rain, it is easy to cause water accumulation

On the other hand, the function of the permeable bricks produced by the existing technology is relatively single. They simply allow precipitation to penetrate into the ground through the brick body, and cannot effectively remove the pollutants contained in the water, and cannot purify the sewage that passes through the brick body.