摘要
针对某煤化工企业排放的反渗透浓盐水,采用先加碱软化除硬,再臭氧催化氧化的方法进行处理。在NaOH投加量为1200mg/L的条件下,出水总硬度小于450mg/L,满足后续处理的进水要求,同时可使TOC的质量浓度从70mg/L降至50mg/L。软化后的浓盐水在臭氧投加量为300~350mg/L时,TOC的质量浓度从50mg/L降至20mg/L以下,出水水质满足DB37/676—2007《山东半岛流域水污染物排放标准》表3中一级标准,同时浓盐水的可生化性得到提高。
According to the characteristics of reverse osmosis strong brine discharged from a coal chemical industry company, softening was adopted at first so as to remove hardness, ozone catalytic oxidation was then used for the further treatment. Under the condition that the NaOH dosage was 1 200 mg/L, the total hardness of the effluent water was lower than 450 mg/L, which could meet the influent water quality requirement of the subsequent unit, the mass concentration of TOC decreased from 70 to 50 mg/L. When the ozone dosage was 300 - 350 mg/L, the mass concentration of TOC in the softened strong brine decreased from 50 to below 20 mg/L, the effluent water quality met the requirement of grade 1 in table 3 of DB 37/676-2007 Water Pollutant Discharge Standard in Shandong Peninsula Basin, besides, the biodegradability of the said strong brine was also improved.
作者
戴灵峰
裘碧英
许威
段俊
杨凯
DAI Ling-feng;QIU Bi-ying;XU Wei;DUAN Jun;YANG Kai(McWongong Environmental Technology Co., Ltd., Shanghai 200082, China)
出处
《工业用水与废水》
CAS
2019年第2期32-34,51,共4页
Industrial Water & Wastewater
关键词
反渗透浓盐水
臭氧
高级氧化
催化氧化
软化
reverse osmosis strong brine
ozone
advanced oxidation
catalytic oxidation
softening
