In a gas mask designed to guard against a biological threat, a very fine particulate filter is useful.
预防生物威胁时，优良的微粒过滤器对防毒面具非常有用。
While not strictly necessary, your pond can benefit from having a pump and biological filter to keep water cleaner.
虽然不是绝对必要，你可以受益于池塘有一个泵和生物过滤水保持清洁。
Draft beer refers to the one with certain biological stability, which adopts the method of physical filter with no Pasteurization or instant high temperature sterilization.
纯生啤酒是指不经过巴氏灭菌或高温瞬时灭菌，而采用膜过滤除菌，达到一定的生物稳定性的啤酒。
Impact of backwashing on biomass growth in biological active filter was researched.
研究了反冲洗对生物活性滤池生物量的影响。
The anthracite used as filter material in water plant for biological removal of iron and manganese has been studied and practiced through production practices.
目的通过生产实践，进行了无烟煤作为在生物除铁除锰水厂滤料的研究与应用。
The production and application problems of biological sand filter in treating micro-polluted water were studied in this paper, using the Fuyang River as source water.
本文以滏阳河水为水源，对生物砂滤处理微污染原水生产应用问题进行了理论研究。
A down-flow biological filter is used for the groundwater iron and manganese.
以生物滤柱为反应器，对含铁、锰地下水进行处理。
The methods of biological catalytic oxidation, flocculation settlement, filter, antisepsis and sterilization have been used for the experiments.
试验工艺选用生物接触氧化、絮凝沉淀、过滤、消毒杀菌工艺。
The superiorities of the biological filter and activated sludge were synthesized to increase the treatment efficiency.
综合了生物滤池与活性污泥法各自的优越性，提高了处理效果。
The design and operation parameters of the biological filter may provide a scientific basis for construction and reconstruction of water plants with slightly polluted water sources.
生物陶粒滤池的设计和运行参数可为微污染水源水厂的改造和新建提供科学依据。
Down stream anaerobic biological filter where waste-water poured from top was used as anaerobic processing device in which bacteria colloid was found on padding in biological membrane form.
厌氧处理装置使用下流式厌氧生物滤池，其中菌胶团以生物膜的形式附着在填料上，进水从反应器顶部注入。
This paper expounds the basic structures, technological processes, technical features of biological aerated filter and the requirements for the natures of the filter materials.
阐述了曝气生物滤池的基本结构、工艺流程、工艺特点及对滤料性质的要求。
When biological filter tank is used to treat sanitary wastewater, COD in effluent can satisfy Class I of the discharge standard for urban wastewater treatment plant.
实验针对间歇投配污水的生物渗滤池处理生活废水的一些基本运行参数进行了优化研究。
The inactivation experiment, bacteria counting experiment and some other experiments indicated that biological oxidation had a significant effect on iron-removal in the said filter candle.
通过灭活试验和细菌计数等试验验证该滤柱在除铁中，生物氧化起主要作用。
The improvement test of typical two-stage up-flow biological aerated filter(UBAF) with ceramsite was performed using the characteristics of different flow BAFs and the optimized backwash operation.
利用不同流向BAF反应器的特性以及优化反冲洗操作，对典型的两级上向流陶粒曝气生物滤池工艺进行改进试验。
The kinetic models of organics and ammonia removal in a biological aerated filter (BAF) for domestic wastewater treatment were established.
推导了单级曝气生物滤池处理生活污水的有机物和氨氮去除动力学模型。
When the biological filter bed is stably treating with domestic wastewater, shapes of biofilm and distributing characters of microorganism species on the external of medium were studied.
研究了生物渗滤床处理生活污水稳定运行时介质表面的生物膜形态和微生物种群分布特征，分析了生物膜及微生物种群的空间变化规律。
The performance of denitrification in the up-flow biological aerated filter (UBAF) is studied experimentally.
文章对单级上流式曝气生物滤池的脱氮性能进行了初步研究。
The integrated hydrolytic acidification-biological aerobic filter was used to treat oil-refining wastewater.
采用水解酸化-好氧一体式生物滤池处理炼油废水。
The technique of upflow biological aerated filter is applied in Pingzhou Sewage Treatment Works.
佛山市平洲污水处理厂污水处理工艺采用上流式曝气生物滤池工艺。
Biological Aeration Filter (BAF) process was used in an on-the-spot test of the biological treatment of the slightly-polluted water in a refinery.
采用生物曝气滤池(BAF)工艺对某炼油厂轻度污染水进行了生物处理现场试验研究。
An experimental study of domestic sewage treatment by an integrated biological filter with up-flow anaerobic-anoxic aerated is presented in this paper.
对升流式厌氧-好氧曝气一体化滤池处理生活污水进行了试验研究，探讨了生物膜的形成及供气量、水力停留时间对处理效果的影响。
Using Pearl River source water as raw water, the contaminant removal effect of carbon and sand filter after the biological aerated filter(BAF)pretreatment process was investigated.
以珠江广州段源水为处理对象，考察了曝气生物滤池（BAF）预处理工艺后炭砂滤池的除污效果。
Taking a biological filter as an example, it describes the design of the suspended forms system and details installation of the forms and the monolithic casting technology.
以工程中某一生物滤池为例，介绍了悬模结构体系的设计；并对悬模安装技术和悬模整浇技术作了详细介绍。
The control of hydrogen sulfide using biological fixed-film filter is an economical and effective method.
利用固定生物膜滤池控制硫化氢气体是一种经济有效的方法。
The control of hydrogen sulfide using biological fixed-film filter is an economical and effective method.
利用固定生物膜滤池控制硫化氢气体是一种经济有效的方法。
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