The first objective of this study was to validate a modified quick chemical inertness test method for refillable bottles by comparing the results of sorption into PET strips with those of tests using actual PET bottles.

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A further objective was to investigate the stability of refillable PET bottles which were stored under unfavorable conditions, in relation to the chemical inertness behavior of the material.

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         Treatment of the waste water from zinc-plating plant and various zinc chloride waste water containing Zn~(2+) and Cd~(2+) by granular decontaminant made from weathered coal is performed both in the laboratory and pilot plant. The average data show that adsorption capacities of granular decontaminant for Zn~(2+) are 43mg/g and 68mg/g in laboratory and pilot plant respectively. The desorption efficiency is about 97%. The effluent water meets the requirement of the discharge standard and the metal can be recov...

            对镀锌废水和含Zn~(2+)和Cd~(2+)的氯化锌废水的处理进行了小试和中试研究。所得运转平均数据表明,粒状净化剂对Zn~(2+)的吸附容量分别为42.9mg/g和67.8mg/g,洗脱率分别为98.1%和96.3%。排出水符合国家排放标准,金属离子可回收利用。这种用风化煤制成的粒状净化剂成本低,可循环使用。本文还讨论了吸附机理,认为去除金属离子的主要过程是化学吸附,主要影响因素是腐植酸和酸性基团的含量。

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         Hydraulic secondary control system which developed recently is a

            近年来兴起的液压传动二次调节方案是压力偶联、流量匹配、功率适应的高效节能方案,液机可在高效区内持续工作,制动能量及重物的势能可回收利用。本文通过在西德所作的实验资料,对二次调节液压系统的效率及节能效果进行了较为详细的分析论述。

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         The control conditions and efficiency of practical performance of deep textile dyeing wastewater treatment with fixed-microbe by simulating test and pilot test during performance were made. After the wastewater was treated with surface aeration process, average value of CODcr was 145mg/l, and colority was 40-fold. Then further treated with fixed-microbe, CODcr of the treated wastewater was less than 50mg/l and colority less than 4.5-fold. Thus the treated water could be reused.

            对固定化微生物技术处理印染废水的控制条件进行了研究,并进行了实际运行的考察。印染废水经表曝处理后,COD_(cr)约为145mg/l,色度约为40倍,再经固定化微生物处理后,出水COD_(cr) (责任编辑：admin)