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Title: Photocatalytic wastewater treatment from formaldehyde
Authors: Dubina, A. V.
Martsul’, V. N.
Keywords: сточные воды
очистка сточных вод
карбамидоформальдегидные смолы
концентрация формальдегида
ультрафиолетовое обеззараживание воды
Issue Date: 2015
Publisher: BSTU
Citation: Dubina, A. V. Photocatalytic wastewater treatment from formaldehyde / A. V. Dubina, V. N. Martsul’ // Proceedings of BSTU. No.4. – Minsk : BSTU, 2015. – P. 196-199
Description: The article presents the results of studies of treatment of wastewater at woodworking companies which is formed during manufacture and application of adhesives based on urea-formaldehyde resins. There presented a method of wastewater purification from pollutants such as dissolved components of urea-formaldehyde resins and free formaldehyde. This paper describes a method of pre-stabilization of wastewater for further treatment, which is achieved by precipitation of the condensation products of urea and formaldehyde. Stabilised wastewater is further subjected to processing by UV-radiation. In-vestigations were carried out with the wastewater, which were selected at the wood-processing enterprises of Belarus and wastewater has the following composition: formaldehyde content − 1.0−5.0 g/dm{3}, chemical oxygen demand (COD) of the liquid phase – 15.0 −60.0 g O[2]/dm{3} of components UFR − 50.0 −80.0 g/dm{3}. Various treatment options of stabilized wastewater by UV-radiation are investigated. It was established that UV-treatment of wastewater containing formaldehyde in the presence of powder composite material comprising TiO2, at a dose of irradiation of 10.8 J/cm{2} and and pH value being equal to 11 to reduced the formaldehyde content to 97% formal dehyde at concentrations ranging from 10 to 150 mg/dm{3}. Schematic diagram of wastewater treatment containing components UFR are proposed.
Appears in Collections:2015, № 4

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