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231226s2024 xx |||||o 00| ||eng c |
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|a 10.1080/09593330.2022.2150568
|2 doi
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|a eng
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1 |
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|a Pinto da Silva, Cleber
|e verfasserin
|4 aut
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| 245 |
1 |
0 |
|a Combined process of chemically enhanced sedimentation and rapid filtration for urban wastewater treatment for potable reuse
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| 264 |
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|c 2024
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|a Text
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|a ƒaComputermedien
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|a Date Completed 12.03.2024
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|a Date Revised 12.03.2024
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a The objective of this study is to propose a new post-treatment of effluents from Upflow Anaerobic Sludge Blanket (UASB) using rapid filtration, aiming at the production of water for potable reuse. The final quality of the effluent produced by the treatment using gravel, sand, clinoptilolite and activated carbon associated with disinfection was evaluated by physical chemical analysis, heavy metals and persistent organic contaminants. Experiments were carried out in jar test, filter operation time, evaluation of the efficiency using peracetic acid and free chlorine as disinfectant and all results were statistically analysed. The best conditions were those using 20 mg/L of ferric chloride and natural pH of the effluent (≈ 7.0), which resulted in less reagent consumption. The use of intermediate fund discharges made it possible to obtain approximately 91% of recovered water efficiency. The effluent treated under these conditions showed DOC <2.0 mg/L, COD <1.0 mg/L, BOD <1.0 mg/L, turbidity <1.0 NTU, TSS <1.0 mg/L, ammonia <0.1 mg/L, total phosphorus <0.1 mg/L and surfactants <0.1 mg/L. The disinfection process with free chlorine and PAA allowed the total inactivation of faecal coliforms and total coliforms. The treatment using rapid filtration with disinfection by chlorine reached the appropriate level for urban, environmental, industrial and indirect potable water reuse
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|a Journal Article
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|a Heavy metals
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|a Persistent organic contaminants
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|a UASB post-treatment
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|a wastewater treatment
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|a water quality
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|i Enthalten in
|t Environmental technology
|d 1993
|g 45(2024), 9 vom: 08. Apr., Seite 1696-1707
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