Method for operating reverse osmotic membrane device and reverse osmotic membrane device
    73.
    发明专利
    Method for operating reverse osmotic membrane device and reverse osmotic membrane device 有权
    操作反渗透膜装置的方法和反渗透膜装置

    公开(公告)号:JP2014159015A

    公开(公告)日:2014-09-04

    申请号:JP2013031032

    申请日:2013-02-20

    摘要: PROBLEM TO BE SOLVED: To provide a reverse osmotic membrane device capable of stably treating a body of raw water including copious membrane pollutants such as membrane bioreactor (MBR)-treated water, etc. by preventing a water permeation volume attenuation; and a method for operating the same.SOLUTION: In a method for operating a reverse osmotic membrane device for treating, as a body of raw water, water including organic polymers, the raw water includes organic polymers having molecular weights of at least 10,000 at concentrations of 0.01 ppm or above. The reverse osmotic membrane device includes a spiral reverse osmotic membrane element satisfying the following formula (1). The reverse osmotic membrane device is operated at a permeation flux of 0.6 m/d or below. Membrane area (m)≥n×(11/16) (1) (n expresses the diameter (inches) of the reverse osmotic membrane element).

    摘要翻译: 要解决的问题:提供一种能够通过防止水渗透体积衰减来稳定地处理包括膜生物反应器(MBR)处理的水等的大量膜污染物的原水体的反渗透膜装置; 及其操作方法。解决方案:在用于操作反渗透膜装置的方法中,所述反渗透膜装置用于处理作为原水体的水,包括有机聚合物,原水包括分子量至少为10,000的有机聚合物,其浓度 为0.01ppm以上。 反渗透膜装置包括满足下式(1)的螺旋反渗透膜元件。 反渗透膜装置以0.6m / d或更低的渗透通量运行。 膜面积(μm)≥n×(11/16)(1)(n表示反渗透膜元件的直径(英寸))。

    Freshwater manufacturing system
    74.
    发明专利

    公开(公告)号:JP5575015B2

    公开(公告)日:2014-08-20

    申请号:JP2011048483

    申请日:2011-03-07

    摘要: The purpose of the invention is to provide a system which uses an osmosis membrane to obtain fresh water from salt-containing raw water such as seawater, wherein the system produces fresh water at lower energy consumption. According to the present invention, the system for producing fresh water includes: a forward osmosis membrane processing means for removing salt from raw water via a forward osmosis membrane to obtain permeated water in a solution having an osmotic pressure higher than that of the raw water; a separating means for separating the solute component of the high-osmotic pressure solution, the high-osmotic pressure solution containing the permeated water obtained by the forward osmosis membrane processing means and Na2HPO4 or ethylene carbonate as the solute component; a reverse osmosis membrane processing means for desalinizing the solution separated from the solute component by the separating means as raw water through a reverse osmosis membrane to obtain fresh water; a pump for supplying the raw water to the reverse osmosis membrane processing means; and a pipe for mixing the solute component separated and collected by the separating means, in the high-osmosis pressure solution supplied to the forward osmosis membrane processing means.

    Seawater desalination apparatus and method for washing seawater desalination apparatus
    77.
    发明专利
    Seawater desalination apparatus and method for washing seawater desalination apparatus 有权
    海水淡化装置和洗涤海水淡化装置的方法

    公开(公告)号:JP2014133214A

    公开(公告)日:2014-07-24

    申请号:JP2013002879

    申请日:2013-01-10

    摘要: PROBLEM TO BE SOLVED: To provide a seawater desalination apparatus and a method for washing a seawater desalination apparatus each capable of reducing the initial cost and of abating manual operations of users.SOLUTION: The provided seawater desalination apparatus comprises: a reverse osmotic membrane 10 for separating seawater into fresh water and concentrated seawater; a pretreatment water tank 2 for stocking the seawater or fresh water scheduled to be supplied to the reverse osmotic membrane 10; a permeated water tank 12 into which water is fed from the fresh water discharge side of the reverse osmotic membrane 10; a water washing pump 14 for supplying, following the supply therein of water from the permeated water tank 12, the water into the pretreatment water tank 2; a washing water tank 18 furnished with an agitator 180 and into which bodies of water are supplied respectively from the fresh water discharge side and concentrated seawater discharge side of the reverse osmotic membrane 10; a backwash pump 16 for pumping the washing water from the washing water tank 18 and then transmitting the water to the step anterior to the reverse osmotic membrane 10; and a controller CTR for controlling the respective operations of the water washing pump 14, agitator 180, and backwash pump 16.

    摘要翻译: 要解决的问题:提供一种海水淡化装置和一种能够降低初始成本并减轻用户手动操作的海水淡化装置的清洗方法。解决方案:提供的海水淡化装置包括:反渗透膜10,用于 将海水分离成淡水和浓缩海水; 用于储存预定供应到反渗透膜10的海水或淡水的预处理水箱2; 从反渗透膜10的淡水排出侧向其供水的透水水箱12; 一个水洗泵14,用于在其中从渗透水箱12向其中供应水,供给到预处理水箱2中; 装有搅拌器180的洗涤水箱18分别从反渗透膜10的净水排出侧和浓缩海水排出侧供给到水体中; 用于从洗涤水箱18泵送洗涤水然后将水传送到反渗透膜10前方的反冲洗泵16; 以及用于控制水洗泵14,搅拌器180和反洗泵16的各自操作的控制器CTR。

    Control apparatus, control system and control method
    78.
    发明专利
    Control apparatus, control system and control method 有权
    控制装置,控制系统和控制方法

    公开(公告)号:JP2014133213A

    公开(公告)日:2014-07-24

    申请号:JP2013002878

    申请日:2013-01-10

    IPC分类号: C02F1/44 B01D61/12

    摘要: PROBLEM TO BE SOLVED: To monitor every series of RO membrane respectively, detect abnormality in a seawater desalination plant, and control operation condition of the plant based on the detected result.SOLUTION: A control apparatus includes third calculation means, first monitoring and detecting means and first control means. The third calculation means calculates a resistance value at each of reverse osmotic membranes respectively, based on each of inlet pressure values and fresh water quantities in second measurement data and each osmotic pressure. The first monitoring and detecting means monitors change of characteristics of each reverse osmotic membrane and detects abnormality, based on each of the calculated resistance values. When abnormality is detected by the first monitoring and detecting means, the first control means, after reading out a condition equation or an operation equation associated with a selected operation mode from storage means, performs operation processing by using the condition equation or the operation equation which is read out, and controls operation of a seawater desalination plant based on the result of the operation processing.

    摘要翻译: 要解决的问题:分别监测每个系列的RO膜,根据检测结果检测海水淡化装置的异常情况和工厂的运行状况。解决方案:控制装置包括第三计算装置,第一监测和检测装置 和第一控制装置。 第三计算装置基于第二测量数据和每个渗透压中的每个入口压力值和淡水量分别计算每个反渗透膜处的电阻值。 第一监测和检测装置根据每个计算的电阻值来监测每个反渗透膜的特性变化并检测异常。 当由第一监视和检测装置检测到异常时,第一控制装置在从存储装置读出与选择的操作模式相关联的条件方程或操作方程之后,通过使用条件方程或运算方程 被读取,并且基于操作处理的结果来控制海水淡化设备的操作。

    Rejection enhancing method of reverse osmosis membrane, rejection enhancing processing agent and reverse osmosis membrane
    79.
    发明专利
    Rejection enhancing method of reverse osmosis membrane, rejection enhancing processing agent and reverse osmosis membrane 有权
    反向增强膜的反射增强方法,防止加强剂和反渗透膜

    公开(公告)号:JP2014128760A

    公开(公告)日:2014-07-10

    申请号:JP2012287663

    申请日:2012-12-28

    IPC分类号: B01D67/00 B01D61/02 B01D65/00

    摘要: PROBLEM TO BE SOLVED: To provide a rejection enhancing method of an RO membrane in which the stability of a removal performance (rejection) and the flux stability (stain-resistant persistence) are improved furthermore.SOLUTION: A rejection enhancing method of an RO membrane has a step of passing a water solution containing polyphenol through an RO membrane. The rejection enhancing method of the RO membrane further has a step of passing a water solution containing one or more kinds selected a group comprising a modified polyvinyl alcohol, a high polymer polysaccharide and a polyamino acid in the RO membrane. Preferably, the method further may have a step of passing an organic compound having an amino group with a molecular weight of 1000 or less in the RO membrane.

    摘要翻译: 要解决的问题:提供一种RO膜的排斥增强方法,其中除去性能(排除)的稳定性和助焊剂稳定性(耐污染持续性)进一步提高。解决方案:RO膜的拒收增强方法 具有通过RO膜使含有多酚的水溶液通过的步骤。 RO膜的排斥增强方法进一步具有将含有一种或多种选自包含改性聚乙烯醇,高分子多糖和聚氨基酸的基团的水溶液通过RO膜的步骤。 优选地,该方法还可以具有在RO膜中使具有分子量为1000以下的具有氨基的有机化合物通过的步骤。

    Freshwater purification equipment
    80.
    发明专利

    公开(公告)号:JP5537528B2

    公开(公告)日:2014-07-02

    申请号:JP2011211788

    申请日:2011-09-28

    IPC分类号: C02F1/44 B01D61/00 C02F1/20

    摘要: [Problem] To provide a device for purifying fresh water after absorption of water in a more semi-hyperosmotic solution for hyperosmosis than sea water using a forward osmosis membrane with sea water as the raw water. Also to be able to inhibit deposition of solids (ammonium carbamate) arising from NH3 and CO2 generated in the fresh water purification process, to separate this gas from the semi-hyperosmotic solution by a separation means, and reduce the device scale by making re-dissolving of the gas by a re-dissolving means more efficient. [Solution] A separation means (3) for a solute in the fresh water purification process has a plurality of recovery openings (4, 5) that recover solute components in a semi-hyperosmotic solution as a mixed gas and a carrier gas supply opening (6) and pump (10) that supply a carrier gas to the separation means (3). The gas recovered by the separation means (3) is re-dissolved in a re-dissolving means (14). Deposition of solids arising from NH3 and CO2 can be suppressed by a constitution that supplies gas supplied by the recovery openings (4, 5) to the re-dissolving means (14) from infusion openings (12, 13) that differ, respectively, along with the carrier gas.