Abstract
This work is the second part of “A Review of seventeen years of bank filtration in Brazil: results, benefits, and challenges”. Part 2 describes the research on water treatment carried out in the states of Pernambuco (Olinda city, metropolitan region of Recife and region of Garanhuns) and Minas Gerais (Viçosa city). The main benefit of bank filtration (BF) is that it is an alternative way of obtaining a higher quality raw water compared to the traditional water supply methods when local geological conditions are favorable. BF technology highlights other relevant aspects: it may become one of the main water pretreatments in rivers or lakes with sandy sediments; it is possible to obtain quality water in a well up to the first impenetrable layer (30 m deep); the technology removes 100% of total and fecal coliforms; it may reduce water turbidity at high levels; its pretreatment application may reduce the amount of inputs in the water and, consequently, the generated sludge. Keywords: Bank Filtration. Water Treatment. Local Geological Conditions. Pretreatment. Impenetrable Layer.
Highlights
1 INTRODUCTION This second part of “A Review of seventeen years of bank filtration in Brazil: results, benefits, and challenges” consolidates the results obtained over 17 years of studying BF in Brazil to date and draws attention to the main advantages and challenges of this technique; that is, the state of the art at the national level
It illustrates the research performed in the states of Pernambuco and Minas Gerais, where results were compiled in a result matrix, from which tables were created containing physical, chemical, biological, and specific contaminant parameters
The hyporrheic fauna found in two different points of the Beberibe River is distributed in groups corresponding to rotifers (2% to 68%), nematodes (18% to 41%) and annelids (14% to 54%), 3% of which are other taxonomic groups (VERAS et al, 2016; FREITAS, 2018), with local groups as the most representative (96% dominance) (ALBUQUERQUE, 2015)
Summary
This second part of “A Review of seventeen years of bank filtration in Brazil: results, benefits, and challenges” (continuation of Part 1 - State of Santa Catarina) consolidates the results obtained over 17 years of studying BF in Brazil to date and draws attention to the main advantages and challenges of this technique; that is, the state of the art at the national level. It illustrates the research performed in the states of Pernambuco and Minas Gerais, where results were compiled in a result matrix, from which tables were created containing physical, chemical, biological, and specific contaminant parameters. The hyporrheic fauna found in two different points of the Beberibe River is distributed in groups corresponding to rotifers (2% to 68%), nematodes (18% to 41%) and annelids (14% to 54%), 3% of which are other taxonomic groups (VERAS et al, 2016; FREITAS, 2018), with local groups as the most representative (96% dominance) (ALBUQUERQUE, 2015)
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