期刊
DESALINATION
卷 330, 期 -, 页码 9-15出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.desal.2013.09.010
关键词
Industrial wastewater reclamation; Reverse osmosis concentrate; Countercurrent adsorption; Powdered activated carbon; Microfiltration
资金
- National Natural Science Foundation of China [50908158]
- research fund for the Doctoral Program of Higher Education of China [200900 32120040]
- Scientific and Technological Development Guidance Plan of Baoding, China [12ZF087]
In petrochemical wastewater reclamation, the dissolved biorefractory organics from reverse osmosis concentrate (ROC) is a key obstacle to increasing the overall recovery of reverse osmosis (RO) technology. A hybrid process of countercurrent two-stage adsorption and microfiltration (CFA-MF) was proposed to remove the organics in ROC by powdered activated carbon (PAC). In order to analyze the CTA-MF process, a simple calculation method was established based on the adsorption accumulation principle and response surface methodology (RSM) equations. Approximately 37% of fresh PAC was saved through the CTA-MF process compared with a conventional adsorption process. When the fresh PAC dosage was 0.48 g/L, the average values of chemical oxygen demand (COD) and dissolved organic carbon (DOC) were decreased from 94.1 mg/L and 25.6 mg/L to 36.9 mg/L and 6.98 mg/L, respectively, which coincided well with the predicted results and met the influent requirement of RO for high overall recovery. (C) 2013 Elsevier B.V. All rights reserved.
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