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河底污泥
相关语句
  river sediments
     s: Using river sediments as seed sludge, at the condition of pH 5.0~5.2, temperature 35 ℃, HRT 6~8 h, and with glucose as substrate, a steady anaerobic bio-hydrogen production was obtained in a lab-scale reactor successfully.
     利用河底污泥,以葡萄糖为基质,在pH值为5.0~5.2,温度为35℃,水力停留时间为68h的条件下,实现了连续厌氧生物产氢。
短句来源
     A Study on Steady Anaerobic Bio-hydrogen Production Using River Sediments as Seed Sludge
     利用河底污泥进行连续厌氧生物产氢的试验研究
短句来源
     Effects of some major factors of anaerobic fermentative biohydrogen production with organic substrates was evaluated using preheated river sediments as seed sludge The results showed that: at 35 ℃ and initial pH of 65, these sediments could use different sugars including xylose,glucose,fructose ,sucrose,cellobiose,starch as substrates to produce hydrogen.
     本文采用经预热处理后的河底污泥,对其利用有机物厌氧生物产氢过程中的几种主要影响因素进行了试验研究。 结果表明,在起始pH值为6 5,反应温度为35℃时,该污泥可利用木糖、葡萄糖、果糖、蔗糖、纤维二糖、淀粉等多种糖类物质为基质产生氢气,其中,以木糖为基质时,累计产氢量和产氢速率均较低;
短句来源
  river sludge
     The recoveries are 79.5%~92.3% for extrating lead (Ⅱ) in standard soil samples and river sludge.
     用该方法萃取标准土样 (GSS - 2 )及河底污泥中的铅 (Ⅱ ) ,回收率为 79.5 %~ 92 .3% ,结果令人满意。
短句来源
  相似匹配句对
     The sludge is recycled.
     污泥回收利用
短句来源
     Sludge Conditioning Agent
     污泥调理剂
短句来源
     Studies on cultivation of acid-tolerant methanogenic granular sludge using river sediments.
     河底沉积物培养耐酸产甲烷颗粒污泥的试验研究
短句来源
     A Study on Steady Anaerobic Bio-hydrogen Production Using River Sediments as Seed Sludge
     利用河底污泥进行连续厌氧生物产氢的试验研究
短句来源
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  river sediments
The lowest cell numbers of BABs were found in river sediments, whereas the highest numbers were recorded in the sediments of polysaprobic zones (0.1-1.0 × 103 and 0.5-2.0 × 107 cells/cm3 respectively).
      
Quantitative assessment of the role of deltas in the processes of deposition of river sediments
      
Theoretical principles of the sediment budget at river mouths and the role of deltas in the deposition of river sediments are discussed.
      
Microwave assisted extraction and sonication of polychlorobiphenils from river sediments and risk assesment by toxic equivalency
      
Extraction of Nonylphenol and Nonylphenol Ethoxylates from River Sediments: Comparison of Different Extraction Techniques
      
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  river sludge
The procedure is also applicable to river sludge deposits.
      


Effects of some major factors of anaerobic fermentative biohydrogen production with organic substrates was evaluated using preheated river sediments as seed sludge The results showed that: at 35 ℃ and initial pH of 65, these sediments could use different sugars including xylose,glucose,fructose ,sucrose,cellobiose,starch as substrates to produce hydrogen.When xylose was used as substrate, the total hydrogen production and the specific hydrogen production rate were lower The temperature and the initial pH...

Effects of some major factors of anaerobic fermentative biohydrogen production with organic substrates was evaluated using preheated river sediments as seed sludge The results showed that: at 35 ℃ and initial pH of 65, these sediments could use different sugars including xylose,glucose,fructose ,sucrose,cellobiose,starch as substrates to produce hydrogen.When xylose was used as substrate, the total hydrogen production and the specific hydrogen production rate were lower The temperature and the initial pH values had great effects on the anaerobic biohydrogen production process, the optimal temperature was 35 ℃, and the optimal initial pH value was 65 respectively At the optimal temperature and the optimal initial pH, using glucose as substrate (COD=20 000 mg·L-1), the highest total hydrogen production of 32375 ml·gTVS-1 was reached, the specific hydrogen production rate was 3764 ml·gVSS-1h-1, and the hydrogen composition in the gas was about 50%

本文采用经预热处理后的河底污泥,对其利用有机物厌氧生物产氢过程中的几种主要影响因素进行了试验研究。结果表明,在起始pH值为6 5,反应温度为35℃时,该污泥可利用木糖、葡萄糖、果糖、蔗糖、纤维二糖、淀粉等多种糖类物质为基质产生氢气,其中,以木糖为基质时,累计产氢量和产氢速率均较低;反应温度和起始pH值均对厌氧产氢过程具有显著影响,最佳温度为35℃最佳起始pH值为6 5。在上述条件下,以葡萄糖(COD=20 0g·L-1)为基质时,可获得最大的累计产氢量为323 75mlH2·gTVS-1,产氢速率为37 64mlH2·gTVS-1h-1,气体中氢气含量约为50%。

A method using dithizone (H_2Dz) as chelating agent and supercritical fluid CO_2 as extractant to extract lead (Ⅱ) in silica gel and standard reference soil samples was studied. Various factors influencing extraction efficiency were investigated, including temperature, pressure, flow rate and volume of CO_2, quantity of chelating agent and type of modifier. It is shown that lead (Ⅱ) in silica gel can be extracted completely using methylene chloride as modifier, when the pressure is 25MPa, temperature is 60℃,...

A method using dithizone (H_2Dz) as chelating agent and supercritical fluid CO_2 as extractant to extract lead (Ⅱ) in silica gel and standard reference soil samples was studied. Various factors influencing extraction efficiency were investigated, including temperature, pressure, flow rate and volume of CO_2, quantity of chelating agent and type of modifier. It is shown that lead (Ⅱ) in silica gel can be extracted completely using methylene chloride as modifier, when the pressure is 25MPa, temperature is 60℃, and flow rate and volume of SF-CO_2 are 0.6 mL/min and 9mL, respectively. The recoveries are 79.5%~92.3% for extrating lead (Ⅱ) in standard soil samples and river sludge.

采用双硫腙 (H2 Dz)作衍生剂、超临界流体CO2 为萃取剂 ,螯合萃取固载在硅胶上的铅 (Ⅱ )。研究了影响萃取率的各种因素 ,包括温度、压力、超临界流体CO2 流速及用量、衍生剂用量、改性剂等。结果表明 ,在压力2 5MPa、温度 6 0℃、SF -CO2 流速 0 .6mL/min、SF -CO2 用量 9mL条件下 ,采用 10 % (v/v)二氯甲烷作改性剂 ,固载在硅胶上的铅 (Ⅱ )可得到完全萃取。用该方法萃取标准土样 (GSS - 2 )及河底污泥中的铅 (Ⅱ ) ,回收率为 79.5 %~ 92 .3% ,结果令人满意。

Seeded with normal anaerobic granular sludge,mixed sludge(normal anaerobic granular sludge and aerobic activate sludge),river sediments respectively, feeding with synthetic wastewater containing ammonia and nitrite, three similar lab-scale UASB systems were started up. After 225,220 and 250d's operation respectively, anaerobic ammonia oxidation processes were obtained successfully in three reactors, the NH + 4-N removal efficiencies were all above 80%. The ratios of NH + 4-N removed to NO - 2-N removed...

Seeded with normal anaerobic granular sludge,mixed sludge(normal anaerobic granular sludge and aerobic activate sludge),river sediments respectively, feeding with synthetic wastewater containing ammonia and nitrite, three similar lab-scale UASB systems were started up. After 225,220 and 250d's operation respectively, anaerobic ammonia oxidation processes were obtained successfully in three reactors, the NH + 4-N removal efficiencies were all above 80%. The ratios of NH + 4-N removed to NO - 2-N removed through anaerobic ammonia oxidation process in three reactors were different.

采用 3套相似的小试UASB系统 ,分别接种普通厌氧颗粒污泥、普通厌氧颗粒污泥与好氧活性污泥的混合污泥以及河底污泥 ,以自配含NH+ 4 N和NO-2 N的废水为进水 ,分别经过 2 2 5d、2 2 0d和 2 5 0d的启动运行 ,均成功实现了厌氧氨氧化过程 ,氨氮去除率都达到 80 %以上 ,但在各反应器中由厌氧氨氧化过程所去除的氨氮与亚硝酸氮的比例有较大区别

 
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