A/O结合循环式活性污泥法处理海产品加工废水

针对海产品加工废水氨氮含量较高的特点。舟山兴业有限公司的污水处理工程采用两段A/O结合循环式活性污泥法工艺，工程验收合格后运行一年多来，排放废水的各项污染指标均达到国家《污水综合排放标准》（GB8978-1996）的二级标准，处理系统具有很好的抗冲击能力和脱氮效果。     

Electrochemical pre-treatment of effluents containing chlorinated compounds using an adsorbent

Electrochemical pre-treatment of industrial wastewater to remove refractory and/or toxic organic components, making them more amenable to biological treatment, is likely to be more cost-effective than using a physical or chemical process for complete organic removal. This paper demonstrates the use of a carbon-based adsorbent material that preferentially removes chlorinated organic compounds. Electrochemical regeneration of the adsorbent is shown to be a quick, easy and cheap process, because the adsorbent is both highly electrically conducting and non-porous. High regeneration rates over a number of cycles were obtained by passing a charge of 25 C g⁻¹ through a bed of adsorbent particles, at a current density of 20 mA cm⁻² for 10 min. The energy required to remove a kg of COD from an industrial wastewater was calculated to be 27 kWh.     

长铝公司含油废水处理工艺

根据含油废水的特性，结合中国长城铝业公司废水处理的现状及水质特点，论述了采用捞油→撇油→隔油→混凝气浮的工艺处理铝冶炼企业含油废水的可行性，并对此工艺进行了剖析。多年的运行经验证明，采用此工艺可去除水中的可浮油与乳化油，去除率可达98％左右。油浓度低于国家污水排放标准10mg／L。此工艺为铝工业废水治理开辟了一条崭新的道路。然而，此工艺在具体设计和运行管理上仍存在一些问题，有待于日臻完善。     

高浓度难降解有机废水湿式氧化可行性研究

选择四种高浓度难降解有机废水,在2L高压间歇反应釜中,研究了湿式氧化效果与技术可行性。结果表明:从氧化的容易程度来看,乳化液废水>丙硫咪唑废水>甲胺磷废水>分散蓝废水;各废水湿式氧化后可生化性得到显著改善;Cu2+有不同程度的催化作用;甲胺磷废水和丙硫咪唑废水对不锈钢反应釜腐蚀严重,乳化液废水最适宜湿式氧化。反应温度显著影响废水湿式氧化效果,温度越高氧化率越高。     

氧化铁生产废液的治理和利用

氧化铁生产产生的含铁硫酸铵废液和洗涤废水中含有铁、硫酸根、铵等离子。采用化学沉淀、过滤、蒸发等方法处理该废水可回收废水中的硫酸铵、氧化铁、处理后的废水可回用于生产。     

混合化工废水混凝脱色实验研究

对混合化工废水分别用聚铝、聚铁等无机混凝剂和有机高分子絮凝剂进行混凝脱色实验，并分析了脱色机理。实验表明,脱色剂性质、脱色剂投药量对处理效果都有很大影响。通过比较,可以根据混合化工废水不同的进水水质情况,选择适当的絮凝脱色剂，使出水色度大大降低,经济而有效。     

Biological treatment of wastewater from a polymer coating process

Wastewater containing propylene glycol methyl ether from a powder and E‐coating plant was treated biologically. The wastewater was circulated through a packed column at rates of 0.014, 0.028, and 0.042 m³ m^?2 s^?1 (14, 28, and 42 kg m^?2 s^?1) with an airflow in a countercurrent direction. Various air flowrates from 0.034 to 0.10 m³ m^?2 s^?1 (0.041–0.12 kg m^?2 s^?1) were used. The removal of the biological oxygen demand (BOD) of the wastewater did not change significantly with the air flowrate. After 4 days of treatment in the packed column the BOD was reduced by about 70% while a BOD reduction of 10% was observed with the wastewater in a stagnant tank. BOD removal with aeration in the packed column was about 40% higher than that without aeration. At the air flowrate of 0.068 m³ m^?2 s^?1 and the liquid flowrate of 0.028 m³ m^?2 s^?1, BOD removal for the wastewater seeded with Polyseed® increased by about 25% compared with that of the unseeded wastewater. In order to minimize the power consumption, cyclic pumping of the liquid to the packed column with aeration was also tested. For the liquid‐pumping cycle of 2‐h on and 4‐h off, BOD removal was about the same as that with a continuously pumping operation. © 2002 Society of Chemical Industry     

活性炭对含铬废水的吸附处理研究

研究了活性炭吸附处理实验室模拟含铬废水。实验结果表明,当活性炭用量为1 g,废水pH=4~5,吸附接触时间大于1 h,活性炭与铬含量比值大于5 mg Cr6+/g活性炭时,处理效果可达99%以上;吸附符合Freund lich等温模式,吸附等温方程式为logq=0.7780+0.9716 logc,以物理吸附为主;吸附穿透体积为25 mL,活性炭吸附Cr6+的工作吸附容量为14.59 mg Cr6+/g活性炭,工作饱和吸附容量为803.41 mg Cr6+/g活性炭。     

裂化催化剂生产废水中悬浮物的去除试验

用配制的分别以阴离子聚丙烯酰胺、氯化铝和阳离子聚丙烯酰胺为主剂的三种絮凝剂对裂化催化剂生产废水进行絮凝研究,考察了絮凝剂的加入量、废水pH值和絮凝沉降时间对絮凝沉降效果的影响。试验结果表明:在一定的操作参数下,以阴离子聚丙烯酰胺为主剂絮凝剂的用量较少,效果最好。     

聚合硫酸铁处理制革废水

本文研究了几种常用的国产混凝剂处理制革废水的效果，得出聚合硫酸铁是一种比较经济有效的混凝剂，配合ＰＡＭ助凝剂可以取得更好的效果。工艺上采用混凝气浮，可全部去除硫化物，出水总铬≤１ｍｇ／Ｌ，ＣＯＤ去除率可达７０％－８０％。