廢水處理工藝設(shè)計的光解,除垢,管道與控制-wenkub.com
2025-03-01 01:26 本頁面
【正文】 2023年 3月 22日星期三 1時 25分 59秒 01:25:5922 March 2023 ? 1一個人即使已登上頂峰，也仍要自強不息。勝人者有力，自勝者強。 , March 22, 2023 ? 閱讀一切好書如同和過去最杰出的人談話。 。 :25:5901:25Mar2322Mar23 ? 1世間成事，不求其絕對圓滿，留一份不足，可得無限完美。 2023年 3月 22日星期三 1時 25分 59秒 01:25:5922 March 2023 ? 1做前，能夠環(huán)視四周；做時，你只能或者最好沿著以腳為起點的射線向前。 :25:5901:25:59March 22, 2023 ? 1他鄉(xiāng)生白發(fā)，舊國見青山。 , March 22, 2023 ? 雨中黃葉樹，燈下白頭人。 610 2 活度系數(shù) γ 離子強度 I 對于 CaCO3（ pH ~） 610 2 水垢控制 Scale Control CaCO3水垢可以通過以下幾種途徑去除： 1. 酸化，降低 pH和堿度； 2. 通過離子交換和石灰軟化，減少鈣濃度； 3. 添加阻垢劑，增加 CaCO3溶解度； 石灰軟化 法 ：使用 石灰軟化硬水的 方法， 在硬水中加入 消石灰 ，不水中的硬度成分碳酸 化合物反應(yīng) 、生成難溶的堿性物質(zhì)。 69 1 局限性 Photolysis Process Limitations The efficiency of the photolysis process depends, in part, on the characteristics of the water matrix and pounds targeted for degradation. 1. the extinction coefficient for residual anic matter varies over a wide range and may interfere with the photolysis of other pounds. 2. the light energy input may be absorbed by the other constituents, there may be photon losses upon reflection off the reactor wall, and the precipitate that builds up on the exterior surface of sleeves that cover the lamps due to the elevated temperature will block light transmission. 解決方案 ： To overe the limitations associated with photolysis processes related to absorbance of UV energy by nontarget constituents in water reuse, pretreatment using reverse osmosis should be used to remove most of the interfering pounds and improve the overall process performance. Pilot studies should be conducted to characterize the expected efficiency of photolysis and the rate and characteristics of fouling of the lamp sleeve. 610 化學中和 水垢控制 穩(wěn)定性 』 610 2 The removal of excess acidity or alkalinity by treatment with a chemical of the opposite position is termed neutralization. In general, all treated wastewaters with excessively low or high pH will require neutralization before they can be dispersed to the environment. Scaling control is required for nanofiltration and reverse osmosis treatment to control the formation of scale, which can severely impact performance. Chemical stabilization is often required for highly treated wastewaters to control their aggressiveness with respect to corrosion. 定義與概念 1 PH調(diào)節(jié) In a variety of wastewater treatment operations and processes, there is often a need for pH adjustment. Because a number of chemicals are available that can be used, the choice will depend on the suitability of a given chemical for a particular application and prevailing economics. 610 2 Wastewater that is acidic can be neutralized with any number of basic chemicals. Sodium hydroxide and sodium carbonate, although somewhat expensive, are convenient and are used widely by small plants or for treatment where small quantities are adequate. Lime, which is cheaper, but somewhat less convenient, is the most widely used chemical. Lime can be purchased as quicklime or slaked hydrated lime, highcalcium or dolomitic lime, and in several physical forms. Limestone and dolomitic limestone are cheaper, but less convenient to use and slower in reaction rate. Because they can bee coated in certain waste treatment applications, their use is limited. Calcium c
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