The utility of immobilized bacteria as a biosorbent for heavy metals from mine wastewater was investigated. The experimental results showed that heavy metals could be efficiently accumulated by the immobilized bacteria with removal efficiencies of 94.4% and 80.6% for 100 mg·L-1 Cu and 50 mg·L-1 Zn, respectively, at a strain dose of 15 g·L-1. The biosorption efficiency was strongly influenced by the pH of the mine wastewater (optimal pH 3.5) and strain dose (optimal value 15 g·L-1). Immobilized bacteria regeneration studies were carried out over four sorption-desorption cycles. Removal efficiencies of 67.4% and 46.5% for 100 mg·L-1 Cu and 50 mg·L-1 Zn were still attained in the third cycle. An immobilized bacteria based fluidized bed technique was developed to handle the mine wastewater. Optimal operation conditions for the fluidized bed were 4.02 L·min-1 aeration and 2 h treatment time. The immobilized bacteria fluidized bed effectively treated mine wastewater, removing 100% of all heavy metals with concentrations lower than 10 mg·L-1 and 56.6% of Fe, initially present at 579.2 mg·L-1, thus this process is a promising technique for future applications.

随着抗甲状腺药物和碘剂的临床应用,甲状腺切除术后发生甲状腺危象已极其少见,而非甲状腺手术术后并发甲亢危象更是罕见.本院收治2例急腹症患者术后并发甲亢危象,经及时诊治痊愈,现报告如下.

我院1998年-2000年采用DSA超选择性肾动脉栓塞治疗肾脏急性大出血患者7例,临床疗效满意,现报告如下. 1临床资料 本组患者7例,均为男性,年龄24-62岁.2例因突发性大量肉眼血尿,其中1例伴左侧腰痛.起病后4-8h急诊入院.

临床上肾动静脉瘘引起突发、难以控制的血尿者较为罕见,我们采用介入放射技术治疗2例,报告如下.

例1,患者，男，45岁，因上腹部疼痛2 h，加剧1 h抬送入院。诊断为弥漫性腹膜炎，胃十二指肠溃疡并穿孔。入院查体：T 36.8 ℃，P 100次/分，BP 110/70 mmHg，腹平坦，板状腹，全腹压痛、反跳痛。腹部平片提示膈下新月形游离气体。完善术前准备，急诊行胃大部分切除术。术中患者出现高热、燥烦不安，心率120～140次/分，大汗淋漓，甚至谵妄。予以胃肠减压，积极抗炎及对症治疗，上述症状持续加重。追问患者有甲亢病史，查T3 2.97 ng/ml,T4 133.5 ng/ml,FT3 17.18 pmol/L,FT4 66.30 pmol/L。考虑为甲状腺功能亢进(甲亢)危象，予以：(1)Lugol溶液2 ml＋生理盐水20 ml灌肠，每天1次；(2)丙基硫氧嘧啶300 mg灌肠，每天1次；(3)心得安10 mg舌下含服，每4 h 1次； (4)利血平1 mg

临床上肾动静脉瘘引起突发难以控制的严重血尿少见，临床相关检查缺乏特异性，致使发病原因一时难以明确，往往因为来势凶猛，危及生命而被迫采取患肾切除术。借助介入放射进行诊治，可取得良好效果，现报道如下。 男2例，女1例，以突发性全程内服血尿就诊，伴发患者腰痛或排尿困难，体查，肾无隆起，患肾区部压痛，HP 1．3～8．0 g，出凝血时间及凝血酶、血小板均正常，B超或CT显示患肾孟内及输尿管有血凝块声像，IVP患肾不显像，膀胱镜检示血尿来自一侧肾脏。采用Seldinger技术肾A造形显示异常血管外下方在一小团造形剂显示由淡变浓密，取明胶海绵颗粒与300#PVA微粒混合进行栓塞，取明胶海绵2条经导管注入，再取3 mm毛弹簧全塞该动脉。10 min进行肾动脉造形复查见该血管闭塞，无团状造形剂渗出。术后2 h患者血尿停止，随访5～12月复查镜下无血尿，IVP肾盂盏显影良好。我们认为对于一些原因不明的血尿，借助于介入放射技术结合B超、CT等检查，有助于明确出血部位及原因，给予及时有效的治疗，除非证实为肾脏恶性占位病变，应避免盲目行患肾切除。对其他肾血管良性病变引发的血尿也可借助于介入放射技术进行诊治。