Your browser doesn't support javascript.
loading
Biotoxicity dynamic change and key toxic organics identification of coal chemical wastewater along a novel full-scale treatment process.
Ma, Weiwei; Zhang, Xiaoqi; Han, Hongjun; Shi, Xueqing; Kong, Qiaoping; Yu, Tong; Zhao, Fei.
Afiliación
  • Ma W; School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, China.
  • Zhang X; School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, China.
  • Han H; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China. Electronic address: han13946003379@163.com.
  • Shi X; School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, China.
  • Kong Q; School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, China.
  • Yu T; School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, China.
  • Zhao F; School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, China.
J Environ Sci (China) ; 138: 277-287, 2024 Apr.
Article en En | MEDLINE | ID: mdl-38135395
ABSTRACT
It is particularly important to comprehensively assess the biotoxicity variation of industrial wastewater along the treatment process for ensuring the water environment security. However, intensive studies on the biotoxicity reduction of industrial wastewater are still limited. In this study, the toxic organics removal and biotoxicity reduction of coal chemical wastewater (CCW) along a novel full-scale treatment process based on the pretreatment process-anaerobic process-biological enhanced (BE) process-anoxic/oxic (A/O) process-advanced treatment process was evaluated. This process performed great removal efficiency of COD, total phenol, NH4+-N and total nitrogen. And the biotoxicity variation along the treatment units was analyzed from the perspective of acute biotoxicity, genotixicity and oxidative damage. The results indicated that the effluent of pretreatment process presented relatively high acute biotoxicity to Tetrahymena thermophila. But the acute biotoxicity was significantly reduced in BE-A/O process. And the genotoxicity and oxidative damage to Tetrahymena thermophila were significantly decreased after advanced treatment. The polar organics in CCW were identified as the main biotoxicity contributors. Phenols were positively correlated with acute biotoxicity, while the nitrogenous heterocyclic compounds and polycyclic aromatic hydrocarbons were positively correlated with genotoxicity. Although the biotoxicity was effectively reduced in the novel full-scale treatment process, the effluent still performed potential biotoxicity, which need to be further explored in order to reduce environmental risk.
Asunto(s)
Palabras clave
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Aguas Residuales Idioma: En Revista: J Environ Sci (China) Asunto de la revista: SAUDE AMBIENTAL Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Países Bajos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Aguas Residuales Idioma: En Revista: J Environ Sci (China) Asunto de la revista: SAUDE AMBIENTAL Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Países Bajos