Water Dynamics in an Infiltration Trench in an Urban Centre in Brazil: Monitoring and Modelling

Abstract

Infiltration trenches are compensatory techniques that consist of a reservoir filled with granular material. Their function is to store and infiltrate runoff water generated by rainfall. The objective of this work was to evaluate the hydraulic performance and model the water dynamics of an infiltration trench installed in the city of Recife, Pernambuco, Brazil. For each event, the response time of the infiltration system, the percentage of the infiltrated volume and the dynamics of water storage processes were analyzed as a function of rainfall events. The Puls method was used to model the events. The monitoring data demonstrated that the infiltration trench had a positive performance, infiltrating a large part of the drained volume, even with system overflows. The analyzed events presented an average emptying time of 6 days. The infiltration trench achieved its objective of decreasing the volume drained on the surface. The application of the Puls method in simulations of the monitored events showed satisfactory results in the statistical criteria coefficient of determination, deviation ratio and coefficient of residual mass, obtaining efficient adjustments, apart from a few exceptions. This study allowed us to prove the positive contribution of the trench to the water budget.

Assessing Potential Effects of Nature-Based Solutions (NBS) on Water Ecosystem Service in the Interurban Micro-Watershed Río Torres, Costa Rica

“…When contemplating the implementation of infiltration ditches, it is possible to infiltrate a large part of the volume of water, causing the impermeable flow to be reduced to a minimum in relation to the baseline scenario. These alternatives have a high contribution by infiltrating a large part of the drained volume from impermeable surfaces [58]. Green infrastructures behave the same or even better than gray infrastructure for water purification and protection against floods; additionally, it is highlighted that it has a similar cost and provides additional benefits [59].…”

Utilização de pavimento permeável como alternativa compensatória para drenagem urbana em Recife-PE

“…Os dispositivos compensatórios de infiltração têm por objetivo facilitar a retenção da água e, consequentemente, a redução do escoamento superficial direto, além de volumes escoados através da infiltração da água no solo, reduzindo a intensidade dos alagamentos (FERREIRA; BARBASSA; MORUZZI, 2018). Dentre os dispositivos, encontram-se os jardins de chuva, as valas de infiltração e os pavimentos permeáveis, todos promovem um controle de água pluvial na fonte em que a precipitação ocorreu, visando reduzir o desequilíbrio no ciclo natural de infiltração, na percolação e no escoamento da água causado pela urbanização e pelas elevadas taxas de impermeabilização (BEZERRA et al, 2022).…”

Long-Term Monitoring of an Urban Stormwater Infiltration Trench in South Korea with Assessment Using the Analytic Hierarchy Process

“…Research on infiltration trenches has been conducted over the years with a variety of focuses, including pollutant reduction, flow regimes, clogging, and modelling [10][11][12]. However, this concept has only been applied in South Korea in the past decade, and investigating the effectiveness of this technology requires experience and performance data obtained through long-term monitoring.…”