除錳作用 的英文怎麼說
中文拼音 [chúměngzuòyòng]
除錳作用
英文
demanganization-
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。" this new treatment works has been specifically designed to take advantage of the most advanced technologies, including clarification by dissolved air floatation units and removal of ammonia and manganese by primary aerated biological filters to produce high quality drinking water, " mr ko said. to conserve water, all wash - water used for regular cleaning of filters is recycled
他說，大埔濾水廠在設計上採用最先進的技術，包括以溶氣浮選池進行澄清工作，以及使用初級曝氣生物過濾池消除水中的氨氣和錳，以提供優質的食水。The main conclusions and original results are summarized as follows. the manganin ultra - high pressure sensors for gas gun were made by two - step thin film techniques, namely, manganin thin films were first deposited by magnetron sputtering on fused silica substrates, and then covered by a layer of sio2 thin films by electron beam evaporation. consequently, the manganin sensing elements were " cleanly " encapsulated in inorganic solid matrix and the high - pressure shunt effect was eliminated radically
上述技術的主要優點在於可以採用高壓絕緣性能更好的無機物作為絕緣封裝材料，如本研究中所採用的sio2 ，而代替在箔式錳銅計中所使用的ptfe ；並可實現敏感元件「清潔」地無機固態封裝，即將整個敏感元件是包封在無機物中，而不與高壓力下絕緣性能相對較差的有機物，如粘接劑、樹脂等直接接觸，從而在根本上消除了高壓旁路效應。The effect of sodium permanganate on the removing the micro - organic matter in water
高錳酸鈉對水中微量有機物的去除作用The authour investigate the dosing conditions and effect of the pac to the huanghe water - source, which includes the following four parts : the selection of the pac ; the confirmation of dosing scheme and effect of the pac ; the research of application of potassium permanganate in combination with pac ; the research of the pac ' s modification and the modified effectiveness. the experiment is mainly carried out on the pilot system in the jieyuan water plan of tianjin. the results of the reseach include the following : l ) the pac from zunhua plant is selected as the better carbon for the source water of tianjin through the experiment ; 2 ) through the pilot experiment we conclude that the pac ' s best adding point is the mixing tank and the better dose is 10mg / l, on which the codmn of filtered water can be decreased to 40 % and the effluent have no problem of odour and color ; 3the adsorbing experiment show that pac mainly adsorb the organic matters which molecular wt., distribution between 500 and 3000, and can adsorb organic matters whose molecular wt., distribution are bigger than 6000 if the dose of it is adequent ; 4 ) pac together with potassium permanganate can remove the organic matter more effectively than each of them alone, and reduce the rising trend of turbidity of the flotation ' s effluent due to adding pac ; 5 ) the thesis made a research on the surface properties and the adsorbing capability of the modified carbon by oxidizer : the modified carbon with 20 % h2o2 can remove more organic pollutants than the untreated one by 12 % when we add a higher dose of coagulant ; 6 ) the modification of reduction and loading metal ions are also sttldied, and drow the following conclusions : the modified carbon with 5 % ammonia can enhance the organic matter ' s removal effectiveness by 10 % to the tianjin source water than the untreated one, and the modified one with loading metal ion remove the organic matters from the tianjin source water better ( 8 % ) than the untreated one due to the strong affinity betwween the humic acid and copper ion
本文的實驗主要是在天津芥園水廠的中試系統上完成的，論文的成果和結論主要包括： 1 ）通過靜態實驗選定河北遵化活性炭廠生產的煤質炭為適合天津原水的炭種； 2 ）中試實驗確定粉末活性炭的較佳投加點為混合池投加，較佳投加量為10mg l ，此時可使濾后水的cod _ （ mn ）降低40 ，且可較好地控制濾后水的嗅味和色度； 3 ）初步確定粉末活性炭對原水中有機物的吸附主要集中在分子量在500 - 3000范圍內，投量增大時可吸附部分分子量大於6000的有機物4 ）中試實驗表明：粉末活性炭與高錳酸鉀聯用可取得較兩者單獨應用時對有機物更好的去除效果，且對因投加粉末活性炭而造成的氣浮出水濁度升高有一定的改善作用； 5 ）研究並初步確定氧化改性對粉末活性炭表面性質和有機物的去除效果的影響：粉末活性炭的氧化改性會使其表面的酸性官能團大量增強，表面極性增加；經20的過氧化氫改性的活性炭在增大混凝劑投加量（ fecl _ 3投量為15mg l ）時對有機物的總體去除效果較原活性炭提高12 ， 1次氯酸鈉改性活性炭對有機物的去除效果較原活性炭提高6 ； 6 ）研究並初步確定還原改性、負載金屬離子對原水中有機物的去除效果的影響：經5氨水改性的活性炭可提高天津源水中有機物的去除率達到10 ；負載銅離子后的活性炭可提高對腐殖酸類物質的去除能力，一般可提高8左右。By using inorganic polymer coagulant and automatic dosing method, very good treatment results were obtained. in addition, experiments were conducted on the pre - treatment of source water using kmno4, and very good results were gained. this thesis also did relevant research on the effects of enhanced pre - treatment for organic removal
還進行了試驗室靜態試驗，考察了高錳酸鉀復合藥劑用於化學預氧化的處理效果，試驗結果表明，高錳酸鉀復合藥劑具有優越的強化混凝作用，有助於去除濁度、色度功能，並能降低混凝劑用量。The study mainly introduced some aspets as follow : the reduction of the soil acidity, the eli mination of toxicity of al, fe and mn to the root system, the improvement on acidic soil, the effect on crops yield, as well as the agricultural application of lime in home and abroad and the calculational methods of the required quantity of acidic soil in application
摘要主要介紹了生石灰降低土壤酸度、消除鋁鐵錳對根系毒害作用、對酸性土壤的改良作用、對作物產量的影響等方面，以及生石灰在農業生產上的國內外應用情況和酸性土壤施用生石灰需要量的計算方法。分享友人