sand filtration 中文意思是什麼

sand filtration 解釋
砂濾法
  • sand : n 1 沙。2 〈 pl 〉 沙灘，沙洲，沙地，沙漠。3 〈 pl 〉 沙粒；（計時用的沙漏中的）細沙。4 光陰，時...
  • filtration : n. 過濾；滲入。 automatic （centrifugal） filtration 自動（離心）過濾。
  1. The effects of potassium permanganate, chorine and ozone were compared and the results showed that although all of them could enhance coagulation and then reduce the turbidity of the water after subsequent treatment units, potassium permanganate and ozone were more effective to ensure the quality of the water after air - flotation and sand - filtration

    對高錳酸鉀、氯和臭氧三種氧化劑進行分析比較，結果表明三種氧化劑均能提高混凝效果，但高錳酸鉀預氧化和預臭氧化在提高氣浮和過濾出水水質保障率方面均優于預氯化。
  2. Suspended solids including fine particles and colloids cannot be removed efficiently with gravitation sedimentation ; they are removed using centrifuge, dissolved air flotation, diatomaceous earth filtration, coagulation sedimentation plus rapid sand filtration while dissolved solids are removed with ion exchange, ultrafiltration, activated carbon adsorption and chemical oxidation

    懸浮固體之去除包括微顆粒及膠體物，無法以重力沉澱之物質，可採用離心分離機、空氣浮除法、矽藻土過濾法、混凝沉澱加快濾池等去除之。而溶解性固體去除則採用離子交換法、微細孔濾膜過濾、活性碳吸附以及化學氧化等去除之。
  3. The effort of manganese removal was studied and the kinetics of manganese removal was tried to establish. the factors of dissolved oxygen concentration, fe2 + concentration, ph, p concentration and closing of the filter were studied to evaluate their effort for biological manganese removal, and the correlation of residual manganese and oxidation - reduction potential was also discussed. as the iron content of water was high, experiment results showed that the reaction was zero order, as the iron content of water was low, the reaction was first order. the time needed for the cultivation of biological manganese removal was 60 70 days. the filter operated at the filtration rate of 8 10m / h, silica sand of effective size 0. 95 1. 25mm filled the filter to a depth of 1200mm

    試驗結果表明，成熟后濾砂表面濾膜的x射線衍射圖譜與mno _ x ? 5h _ 2o （ x = 1 . 86 ）的x射線衍射圖譜一樣，濾膜成熟后的結構在進水物質不發生變化的情況下不發生變化;合適的碳磷比對生物除錳有明顯的促進作用，試驗條件下的投磷量不會對出水造成二次污染;生物除錳需要亞鐵的參與，亞鐵的存在除了能夠促進微生物分泌胞外酶並刺激其活性外，還通過鐵離子的變價傳遞電子，催化錳離子的氧化反應，從而促進對二價錳的降解。
  4. The results also show that the filtration effect is improved by the sand coated with metal oxide, and coagulation which is combined with filtration can enhance the efficiency of algae removal

    對水樣進行過濾處理，發現用金屬氧化物進行罩蓋過的石英砂對其過濾效果有所提高。
  5. Agricultural drainage. coating products. sand tank filtration test. test method

    農業排灌設備.塗覆產品.沙箱過濾試驗.試驗方法
  6. Design and operation of paques biological sand filtration for dynamic denitrification

    帕克活性生物砂濾脫氮工藝的設計與運行
  7. Third according to the practice, over 300 g / m2 of the staple nonwoven geotechnical fabric is used in the bank project of the large rivers, its tensile strength is 600 n / 5cm. forth the filtration under the traffic load, normally, the traffic load is repeated load and fast movement. in this case, thick filtration is applied, such as sand and / or thick fabric, of which weight is over 700 g / m2

    研究結果表明：對d _ （ 85 ） 0 . 074mm的土料，不宜採用土工織物作濾層；對級配極不均勻的土壤（不均勻系數cu 2或cu 6 ） ，在滲流作用下，很容易發生管涌，對土工織物的選用要慎重；一般大江大河的護坡工程至少應採用300g m ~ 2以上的短纖無紡土工布，其抗拉強度為600n 5cm左右。
  8. Up - flow filtration with coarse sand media, the water intaking from the bottom layer where the particle diameters of coarse media were the widest and outputting from the surface layer where the particle diameters of coarse media were the thinnest in the single media, was studied theoretically and experimentally in this research. it solved the difficult technical problem of reverse grain filtration

    本文對粗石英砂濾料上向流過濾技術進行了理論和實驗研究，在單一的濾層中待濾水循粒徑最粗的底層進，從粒徑最細的表層出，攻克了「反粒度過濾」的關鍵技術。
  9. Through choosing different diameter of sand granule, using fecl3 and pac as the coagulants, doing paralleled test through standard filtration column compared with referenced filtration columns ( the coarser and the finer sand granule used as filtration media separately ), the thesis investigates the correlation between the filtration behavior and the depth of the deep bed l, the diameter of the sand granule d

    本文採用不同粒徑的石英砂濾料，以fecl _ 3 、 pac作為混凝劑，通過進行標準濾池與參照濾池（分別裝填細濾料、粗濾料）的平行對比試驗，研究濾料粒徑改變后，濾池過濾特性與濾池深度l 、濾料粒徑d的相關關系。
  10. Test on the micro - flocculation filtration by using internal recycle and continuous sand filter

    內循環連續式砂濾器的微絮凝過濾試驗
  11. After 8 months of operation, 15 inspected quality indexes of the filtrate from filtration with the media met the standards for drinking water ( gb5749 - 85 ), indicating that either darkened sand or its regenerated sands could be used as filter media as the new sand

    黑化石英砂與其酸、堿清洗再生砂對待濾水水中濁度，鐵、錳去除效果良好，運行8個月後檢測的15項水質指標都達到《生活飲用水衛生標準gb5749 - 85 》要求，且與新砂濾料的處理效果相差無幾。
  12. This study tries to use upflow rough filtration as the pretreatment for slow sand filtration

    摘要嘗試採用上向流粗濾，作為慢濾池的預處理。
  13. ( 2 ) feclsused as a coagulant when the water quality after filtration has tiny difference in the direct filtration process, compared with the finer sand media, the velocity increase of the water head loss of the coarser sand media is slower, and its filtration cycle is longer

    （ 2 ）在直接過濾過程中，採用fecl _ 3作為混凝劑、出水濁度保持基本相同時，粗濾料的水頭損失增長速度較慢，過濾周期比較長。 （ 3 ）
  14. The surface characteristics, filtration performance in long - term run, and the capability in adsorbing fe, mn and sb of darkened sand which formed in surface - water supply plant were studied in this thesis

    本課題對地表水廠黑化砂的表面特性、在長期運行中的過濾效果和吸附性能進行了研究。
  15. Gas - solid two - phase flow is existed widely in multiphase flow system, for example, desert sand in nature, fuel transportation in field of chemical industry, metallurgy, energy sources and foodstuff, and so on, as well as pneumatic conveying and dust treatment of materiel in bulk ( i. e. sands, corn and plastic granula etc. ). in addition, sulfureted bed, whirlwind dust - exhaustion, sedimentation room and filtration process are involved with gas - solid two - phase flow

    氣固兩相流在多相流體系中普遍存在，例如，自然界的大漠揚沙，化工、冶金、能源和糧食等領域的燃料配送，散裝物料（如沙子、穀物、塑料粒）的氣力輸送和粉塵處理等，硫化床、旋風除塵、沉降室及過濾過程中也會涉及到氣固兩相流。
  16. The result showed that it conformed to the actual condition of the field to determine the decomposing and retention rate of the organic material with the method of nylon bag - potassium dichromate, so it ' s suggested that the relative study being performed with the method to replace the method of sand filtration tube - potassium dichromate

    結果表明，在潮土區用錦綸袋重鉻酸鉀容量法測定有機物料腐解殘留率更符合田間實際情況，建議用該法替代砂濾管重鉻酸鉀容量法進行相關研究。
  17. Filtration is one of important operation units in water treatment operation process, and the sand granule used in the deep bed filtration is the key to perform a satisfied capacity

    過濾是給水處理中?個重要的單元操作過程，其中濾料是濾池的核心，它的選擇直接影響濾池的過濾特性。
  18. In designing the deep bed, the empirical formula l / de = 800 is used as the basis. however, it has been proved that the formula cannot precisely describe the functional relationship and the correlation degree between the nitration behavior of the deep bed filtration process, the depth of the deep bed and the diameter of the sand granule, and it is restricted greatly in the practical application of finding a suitable depth of the deep bed

    目前，濾池的設計通常採用經驗公式i d _ e = 800作為設計濾池厚度的依據，但實踐證明此經驗公式還不能準確地反應濾池過濾特性與濾池深度l 、濾料粒徑d的相關關系及相關程度，在實際應用中受到很大限制。
  19. Uniformed fine sand. if appropriate geotechnical fabric is difficult to be used, a layer of sand may be laid between the fabric and protected soil in order to solve the uneven soil and to improve the filtration effects

    本文在實驗研究的基礎上，對水利工程中土工織物反濾作用的機理和功能進行了分析，提出了針對不同應用目的的土工織物應用特點和技術。
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