公开(公告)号：US4261833A

公开(公告)日：1981-04-14

申请号：US151465

申请日：1980-05-19

申请人： Kurt M. Pohl ,  Gerhard Winkler

发明人： Kurt M. Pohl ,  Gerhard Winkler

IPC分类号： B01D61/04 ,  C02F1/44 ,  C02F1/52

CPC分类号： B01D61/04 ,  B01D61/025 ,  C02F1/441 ,  B01D2311/04

摘要： A method of pretreating raw water, for instance sea water, which is intended for supplying reverse osmosis units. An aqueous solution of acid salt and acid with the same anions is mixed with the raw water, whereby the most advantageous pH value is adjusted for the reverse osmosis, and whereby the acid salt is converted into the corresponding hydroxide. After possible addition of flocking or flaking additives, the resulting hydroxide flakes are separated, in a strongly concentrated form, by way of a centrifuge, particularly a plate or disc centrifuge, and together with fresh metal salt, are again brought into solution as a salt by means of the previously mentioned acid and, after mechanical purification in a second centrifuge, likewise particularly a plate or disc centrifuge, are again supplied to the raw water. The pretreated raw water leaves under pressure from the separator through which it flows and, alternatively, a chemical reducing agent may be added to this departing water flow. With a small requirement for metal salts, the recirculation can be eliminated. Also, the addition of the reducing agent to the pretreated raw water can be eliminated.

摘要翻译： 预处理用于供应反渗透装置的原水（例如海水）的方法。 将具有相同阴离子的酸盐和酸的水溶液与原水混合，由此为了反渗透调节最有利的pH值，由此将酸盐转化为相应的氢氧化物。 在可能加入植绒或剥落添加剂之后，将所得氢氧化物片以浓缩浓缩的形式通过离心机，特别是平板或盘式离心机，再与新鲜金属盐一起以盐的形式分离成溶液 通过先前提及的酸，并且在第二离心机中机械纯化后，同样特别是板或盘式离心机再次供应到原水中。 预处理的原水在压力下从其流动的分离器中离开，或者可以在该离开的水流中加入化学还原剂。 对金属盐的要求很小，可以消除再循环。 此外，可以消除向预处理的原水中添加还原剂。

公开(公告)号：US4354939A

公开(公告)日：1982-10-19

申请号：US234186

申请日：1981-02-13

申请人： Kurt M. Pohl

发明人： Kurt M. Pohl

IPC分类号： B01D20060101 ,  C02F1/44 ,  B01D13/00

CPC分类号： B01D61/06 ,  B01D2313/246 ,  B01D2313/50

摘要： A method of desalinating solutions by reverse osmosis into a salt-poor permeate and a salt-rich concentrate is disclosed. The method includes the steps of supplying solution to a reverse osmosis unit, supplying concentrate leaving the reverse osmosis unit to a treatment container or containers while simultaneously withdrawing a predetermined amount of solution. Some of the solution is also supplied to another space of one of the containers so that practically pressure-less concentrate is conveyed to the environment. The sequence of steps can be reversed in which the containers are supplied so that concentrate collected in the space of the container not being supplied with solution is available for being conveyed to the environment.

摘要翻译： 公开了一种通过反渗透方法将溶液脱盐成贫盐渗透物和富含盐的浓缩物的方法。 该方法包括以下步骤：向反渗透单元提供溶液，将离开反渗透单元的浓缩物供应到处理容器或容器，同时抽出预定量的溶液。 一些溶液也被供应到其中一个容器的另一个空间，使得实际上无压力的浓缩物被输送到环境中。 步骤顺序可以颠倒，其中提供容器，使得收集在容器空间中的浓缩物不被供应溶液可用于被输送到环境中。