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      服務熱線:023-47868251

      本公司承接:水處理設備、污水處理設備、成套代工、安裝。

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      • 反滲透設備的分級和分段方法詳細介紹
      • 本站編輯:重慶碧純凈化設備有限公司發布日期:2019-05-27 21:16 瀏覽次數:

      反滲透技術已經大規模的應用在各行各業,但不同的行業對水質的要求是不一樣的,有很多時候給水經過反滲透設備的膜的一次過濾后,就可以送到用水點或者其他水處理設備中,但也有一些時候,給水經過反滲透膜的一次過濾后還達不到用水點或者其他水處理設備對水質 的要求,此時就必須對反滲透的產水用水反滲透膜再進行處理。

      6-1Z110162448.jpg

      Reverse osmosis technology has been widely used in all walks of life, but different industries have different requirements for water quality. Many times, after a filtration of the membrane of the reverse osmosis equipment, the feed water can be sent to the water point or other water treatment equipment. But sometimes, after a filtration of the reverse osmosis membrane, the feed water can not reach the water point or other water treatment equipment. In order to meet the requirement of water quality, the reverse osmosis membrane must be treated for the water produced by reverse osmosis.

      給水經過反滲透膜的一次過濾稱為一級處理,這樣的反滲透系統稱為一級反滲透系統,如果對一級反滲透系統的產水用反滲透膜再處理一次,那么后面的反滲透系統就被稱為二級反滲透系統,目前在工業上已經有三級反滲透系統在運行,此時,給水經過了反滲透膜的三次過濾。

      The primary filtration of feed water through reverse osmosis membrane is called primary treatment. Such reverse osmosis system is called primary reverse osmosis system. If the production water of primary reverse osmosis system is treated with reverse osmosis membrane once more, then the latter reverse osmosis system is called secondary reverse osmosis system. At present, there are three reverse osmosis systems in operation in industry. At this time, feed water passes through reverse osmosis membrane. Three filtrations.

      第二級或者第三級反滲透設備的給是回已經是前一級反滲透的產水,因而水質很好,基本不存在污染的問題,設計時回收率可以做到更高。每一級反滲透系統一般都需要分成幾段,對于大型反滲透系統最常見的是一級二級反滲透系統,簡單稱之為二段反滲透。

      The feed-back of the second or third-stage reverse osmosis equipment is already the water produced by the former-stage reverse osmosis, so the water quality is good, there is basically no pollution problem, and the recovery rate can be higher in design. Each stage of reverse osmosis system generally needs to be divided into several segments. For large-scale reverse osmosis system, the most common is the first stage and second stage reverse osmosis system, which is simply called the second stage reverse osmosis system.

      那么反滲透設備又是如何分段的呢?

      So how to segment the reverse osmosis equipment?

      對于各種反滲透設備,往往需要不止一個反滲透膜元件,這時候這些膜元件就存在如何排列的問題,如前面介紹,膜元件實際回收率是膜元件實際使用時的回收率。為了降低膜元件的污染速度保證膜元件的使用壽命,膜元件生產廠家對單支膜元件的實際回收率做了明確規定,要求每支1m長的膜元件實際回收率不要超過18%,但當膜元件用于第二級反滲透系統水處理時,則實際回收率不受此限制,允許超過18%。

      For various reverse osmosis equipment, more than one reverse osmosis membrane element is often needed. At this time, there is a problem of how to arrange these membrane elements. As mentioned earlier, the actual recovery rate of membrane elements is the actual recovery rate of membrane elements in use. In order to reduce the contamination rate of membrane components and ensure the service life of membrane components, the manufacturers of membrane components clearly stipulate the actual recovery rate of single membrane components, requiring that the actual recovery rate of each 1 m long membrane component should not exceed 18%. However, when the membrane components are used in the water treatment of the second-stage reverse osmosis system, the actual recovery rate is not limited, allowing more than 18%.

      系統回收率是指反滲透裝置在實際使用時的總回收率。系統回收率受給水水質膜元件的數量及排列方式等多種因素的影響,小型反滲透設備由于膜元件的數量少給水流程短,因而系統回收率普遍偏低,而工業用大型反滲透裝置由于膜元件的數量多給水流程長,所以實際回收率一般均在75%以上,有時甚至可以達到90%。

      System recovery rate refers to the total recovery rate of reverse osmosis device in actual use. The system recovery rate is affected by many factors such as the number and arrangement of membrane elements in feed water quality. Small reverse osmosis equipments generally have low system recovery rate because of the small number of membrane elements and short feed water flow. However, large reverse osmosis equipments in industry usually have more than 75% actual recovery rate, sometimes even up to 90% because of the large number of membrane elements and long feed water flow.

      為了提高反滲透設備回收率,應該把膜元件串聯起來,但如果系統中有很多的膜元件,就不能把他們全部串聯,如果這樣做,那么第一支膜的給水流量就會很大,系統壓力也太大,產水流量分配也不平衡。所以實際使用時,把一定數量的膜元件裝在一個壓力容器中,然后把壓力容器按照一定的排列方式來排列,按照給水/濃水側的流程,給水/濃水流人第一壓力容器為第一段,第一段的給水/濃水再流人下一個壓力容器為第二段,依次類推為其他段的名稱。

      In order to improve the recovery rate of reverse osmosis equipment, the membrane elements should be connected in series, but if there are many membrane elements in the system, they can not be all connected in series. If this is done, the feed water flow of the first membrane will be very large, the pressure of the system will be too large, and the distribution of water production flow is not balanced. Therefore, in actual use, a certain number of membrane elements are installed in a pressure vessel, and then the pressure vessels are arranged in a certain arrangement. According to the flow of water supply/dense water side, the first pressure vessel for water supply/dense water flow is the first stage, and the second stage for water supply/dense water flow to the next pressure vessel is the second stage.

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