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低弗劳德数下挑坎体型对掺气的影响试验 被引量:2
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作者 沈春颖 徐一民 +1 位作者 张涛 储威威 《水利水电科技进展》 CSCD 北大核心 2012年第2期15-17,22,共4页
通过变换坎高及挑坎坡度,制作不同体型的挑坎模型,将其置于可变坡有机玻璃水槽中,研究在不同流量下坎后掺气空腔长度及回水深度的规律。试验结果表明:在其他条件不变的情况下,来流量与空腔长度成正比,挑坎高度对空腔长度的影响比挑坎坡... 通过变换坎高及挑坎坡度,制作不同体型的挑坎模型,将其置于可变坡有机玻璃水槽中,研究在不同流量下坎后掺气空腔长度及回水深度的规律。试验结果表明:在其他条件不变的情况下,来流量与空腔长度成正比,挑坎高度对空腔长度的影响比挑坎坡度要大得多;流量越大,空腔回水深度越低,而空腔回水深度却随着挑坎高度的增加而增加,挑坎高度的增加与回水深度的减轻并不成正比;在试验条件下,射流水舌冲击角5.5°时已出现空腔回水,空腔回水的出现与射流水舌冲击角密切相关,但归根结底还是与来流条件、水槽底坡、掺气坎体型的确定有关。 展开更多
关键词 挑坎 变坡水槽 掺气 空腔长度 回水深度
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Study on Immobilized Algal Cells for Treatment and Recycle of Refinery Wastewater
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作者 Yu Baocheng Liu Deqi +1 位作者 Dong Lihua Li Gang 《China Petroleum Processing & Petrochemical Technology》 SCIE CAS 2005年第3期39-42,共4页
Compared to the algal oxidation pond, treatment of wastewater using the immobilized algal cell technology has excellent effect, which not only can effectively avoid the disadvantage of oxidation pond, but can also rem... Compared to the algal oxidation pond, treatment of wastewater using the immobilized algal cell technology has excellent effect, which not only can effectively avoid the disadvantage of oxidation pond, but can also remarkably improve the efficiency of treating system and the effluent quality. When the treating system operates umder an optimal control conditions, such as a 55% loading rate, an illumination intensity of 2500-3500 lux and a hydraulic residence time of 4 hours, the COD and ammonia nitrogen removal can reach 90%. Water after deep treatment can comply with the requirement of the refinery for the quality of recycled water. 展开更多
关键词 discharged wastewater immobilization of algae deep treatment REUSE
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