A Novel Structure Applied to the Permeable Brick Paving System and its Decontamination Performance

Abstract

To improve the pollutant removal efficiency of the permeable brick paving system, a novel structure applied to the base layer was introduced, and its decontamination performance was researched. Suspended solids (SS), chemical oxygen demand (COD), ammonia nitrogen (NH 4 +-N), total nitrogen (TN), total phosphorus (TP) and heavy metals (Cu, Zn, and Pb) in the influent and effluent were measured, and the role and mechanism of the fillers inside the novel structure were discussed by changing the type and size of the fillers. The results showed that the removal efficiency of the system using the frame structure was slightly lower than that of the cement concrete block. The removal efficiency results using different particles and materials showed that (I) The permeable brick system filled with small-diameter gravel was more effective than a system filled with large-diameter gravel, and the graded gravel of 3-15cm exerted multiple filtering effects, owning the same effectiveness as the gravel with particles sizes of 3-5 cm. (II) The addition of zeolite and iron filings in the framework could effectively reduce NH 4 +-N and NO 3-N, while the addition of fillers such as volcanic rocks rich in iron oxides improved the adsorption effect of COD. The study provides a new and more environmentally friendly alternative for the base layer of permeable brick paving system.

Experimental and computational analyses for advanced wastewater treatment by volcanic rocks

“…For COD, high efficiency of removal has been observed prewashed and layered samples such as V1, V2, V6 to V8 and V11, which reached 99%. It was reported elsewhere that VR is rich in iron oxides, and this increased the adsorption capacity of COD (Lin et al, 2020). Other parameters showed no effect or a slight increase in COD content (Figure 6).…”

Laboratory Innovation to Investigate Concrete Paving Blocks Compressive Strength

“…Measuring the performance of CPB in terms of compressive strength and density is an essential parameter for evaluating its quality [24,25]. The general guidelines for determining CPB compressive strength values follow laboratory testing standards using the cube test method with specific dimensions according to Lin et al [26]. However, testing with the cube method is more complicated than the block test method.…”

An Experimental Study of Clogging Recovery Measures for Ceramic Permeable Bricks

“…In recent years, permeable brick pavements have become one of the most frequently used low impact development (LID) techniques [ 1 , 2 , 3 ]. This infiltration-based technology is comprised of structural layers with relatively high porosity to allow rainwater to pass through its surface brick and underlying structure.…”