[Objective] This paper aimed to study the treatment process of high con- centration wastewater from organic fungicide production by using Fenton oxidation. [Method] The alkali out pretreatment was used to investigate ...[Objective] This paper aimed to study the treatment process of high con- centration wastewater from organic fungicide production by using Fenton oxidation. [Method] The alkali out pretreatment was used to investigate the effects of NaOH concentration, molar ratio of H2O2 to Fe2＋ and H202 dosage on COD removal rate and decolourization ratio. [Result] The optimal operating conditions were determined as follows： pH=3.0, NaOH concentration of 15 g/L, n [H2O2]：n [Fe2＋] =4.20, reaction time of 30 min. [Conclmio.] The research provided scientific references for the treatment of high concentration wastewater from fungicide production.展开更多
The characteristics and harm of high concentrations of organic wastewater were introducecl firstly, and then several treatment processes and effects of high concentrations of organic wastewater were summarized, which ...The characteristics and harm of high concentrations of organic wastewater were introducecl firstly, and then several treatment processes and effects of high concentrations of organic wastewater were summarized, which can provide theoretical references for the choice of wastewater treatment process.展开更多
A novel cathodic–anodic-electrolysis packing（CAEP） used in the treatment of pyridine wastewater was researched, which mainly consisted of 4,4′-diamino-2,2′-disulfonic acid（DSD acid） industrial iron sludge. The ...A novel cathodic–anodic-electrolysis packing（CAEP） used in the treatment of pyridine wastewater was researched, which mainly consisted of 4,4′-diamino-2,2′-disulfonic acid（DSD acid） industrial iron sludge. The physical properties and morphology of the packing were studied. The CAEP was used in a column reactor during the pretreatment of pyridine wastewater. The influence of p H, hydraulic retention time（HRT）, the air–liquid ratio（A/L）and the initial concentration of pyridine were investigated by measuring the removal of total organic carbon（TOC） and pyridine. The characterization results showed that the bulk density, grain density, water absorption percentage and specific surface area were 921 kg/m3,1086 kg/m3, 25% and 29.89 m^2/g, respectively; the removal of TOC and pyridine could reach50% and 58% at the optimal experimental conditions（p H = 3, HRT = 8 hr, A/L = 2）. Notably,the surface of the packing was renewed constantly during the running of the filter, and the handling capacity was stable after running for three months.展开更多
基金Supported by the Overall Strategic Cooperation Program of Chinese Academy of Sciences in Guangdong Province(2012B09040046)~~
文摘[Objective] This paper aimed to study the treatment process of high con- centration wastewater from organic fungicide production by using Fenton oxidation. [Method] The alkali out pretreatment was used to investigate the effects of NaOH concentration, molar ratio of H2O2 to Fe2＋ and H202 dosage on COD removal rate and decolourization ratio. [Result] The optimal operating conditions were determined as follows： pH=3.0, NaOH concentration of 15 g/L, n [H2O2]：n [Fe2＋] =4.20, reaction time of 30 min. [Conclmio.] The research provided scientific references for the treatment of high concentration wastewater from fungicide production.
文摘The characteristics and harm of high concentrations of organic wastewater were introducecl firstly, and then several treatment processes and effects of high concentrations of organic wastewater were summarized, which can provide theoretical references for the choice of wastewater treatment process.
基金supported by the Tai Shan Scholar Foundation(No.ts201511003)
文摘A novel cathodic–anodic-electrolysis packing（CAEP） used in the treatment of pyridine wastewater was researched, which mainly consisted of 4,4′-diamino-2,2′-disulfonic acid（DSD acid） industrial iron sludge. The physical properties and morphology of the packing were studied. The CAEP was used in a column reactor during the pretreatment of pyridine wastewater. The influence of p H, hydraulic retention time（HRT）, the air–liquid ratio（A/L）and the initial concentration of pyridine were investigated by measuring the removal of total organic carbon（TOC） and pyridine. The characterization results showed that the bulk density, grain density, water absorption percentage and specific surface area were 921 kg/m3,1086 kg/m3, 25% and 29.89 m^2/g, respectively; the removal of TOC and pyridine could reach50% and 58% at the optimal experimental conditions（p H = 3, HRT = 8 hr, A/L = 2）. Notably,the surface of the packing was renewed constantly during the running of the filter, and the handling capacity was stable after running for three months.
