Post-treatment of biologically treated wastewater containing organic contaminants using a sequence of H2O2 based advanced oxidation processes: Photolysis and catalytic wet oxidation

Wastewater Treatment and Reclamation: A Review of Pulp and Paper Industry Practices and Opportunities

“…Jamil et al (2011) studied the treatment of effluent from a board paper mill by different photocatalytic processes, achieving a COD removal efficiency of ≈80% by the photo-Fenton treatment; as well as the ≈11 and 33% respectively when applying UV and UV/H2O2. In fact, 4-chlorophenol and phenol have been reported to be efficiently degraded by UV/H2O2 (Rueda-Márquez et al 2015). In addition, Ahmed et al (2009) found good efficiencies in the UV/H2O2 treatment of a Tunisian pulp and paper mill effluent, suggesting that the degradation of lignin derivatives and tannins leads to generation of aromatic intermediates that further undergo oxidative ring opening, producing aliphatic carboxylic acids, just as it has previously been discussed for other AOPs application.…”

Anaerobic digestion of pulp and paper mill wastes – An overview of the developments and improvement opportunities

“…(Table 1); contributing to color of the leachate/ effluents, as well as microorganisms, suspended solids and other pollutants including non biodegradable compounds and relatively low quantities of remained biodegradable organics [82,180]. Hence, tertiary treatments such as membrane separation [82], adsorption [181], ion exchanging [182], and chemical oxida tion process [180,183,184] may be vital if the sludge (or wastewa ter) is desired to be recycled in the manufacturing processes. Composting for the AD residual to form a soil conditioner can also be performed on the AD residuals [185].…”

Post-treatment of plywood mill effluent by Multi-Barrier Treatment: A pilot-scale study

“…Synthetic industrial wastewater (SIWW) was used to test the scaling-up parameters as suggested in a previous study [26] and the performance at different operational modes for the H 2 O 2 /UVC process. In addition, real wastewater effluent (IWW) from a plywood mill was used to evaluate the feasibility of the MBT process as a post-treatment method.…”

“…Multi-Barrier Treatment (MBT) was previously reported as a promising technique that can be applied as a polishing step for wastewater treatment or for water reuse [26,27]. MBT consists of filtration and a combination of hydrogen peroxide photolysis and catalytic wet peroxide oxidation (CWPO).…”

“…One of the main advantages of MBT is that H 2 O 2 is fully consumed during the process. This advantage is of great importance because residual hydrogen peroxide after H 2 O 2 /UVC significantly increases the toxicity of treated water [26,27]. To remove residual H 2 O 2 and oxidize hydrophilic organic compounds, CWPO is used after the H 2 O 2 /UVC process, decreasing the operational and maintenance (O&M) cost of the treatment because during the photolysis of H 2 O 2 , the average oxidation state of organic carbon (AOSC) increases, which in turn increases the aqueous solubility of organic pollutants [28,29].…”