Feasibility Study on Reclamation Techniques for the Petrochemical (HCHO) Wastewater

• Main Authors: Chun-Chi Chen, 陳俊綺
• Other Authors: Hsin-Hsien Chou
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/9z677e

碩士 === 崑山科技大學 === 環境工程研究所 === 107 === Feasibility for treatment and reclamation of Petrochemical wastewater by the membrane bioreactor (MBR) process and reverse osmosis (RO) technology and Ion Exchange was studied. And set up the pilot unit in North of Taiwan X Company. In addition, in order to obtain useful engineering design, optimization of the process performance was also studied. The results show that the waste water quality will effect to the flow rate of MBR product water and the composition in the waste water will accumulate in the bottom of membrane and surface and that will make the membrane scaling and the pressure increase and effect to MBR unit performance decrease. MBR product water COD is 21.8 mg/L that already conform to Water Pollution Control Act and the silt density index (SDI) less than 4 also can feed into RO system. 1st RO unit operation without RO feed water pH adjustment and increases the recovery rate will affect to membrane scaling and to the make flux and performance decrease. 2nd RO unit operation is smoothly, because the feed water is more pure, the organism and inorganic is less than 1st RO feed water, so in the period of pilot test, 2nd RO membrane is no scale and fouling. Ion exchange resin product water the conductivity and ion content can refer to the normal process water requirements.