公开(公告)号：US06261457B1

公开(公告)日：2001-07-17

申请号：US09439083

申请日：1999-11-12

申请人： Randal Marvin Wenthold ,  Christopher Gary Rasset ,  Scott Blair Wright

发明人： Randal Marvin Wenthold ,  Christopher Gary Rasset ,  Scott Blair Wright

IPC分类号： B01D6506

CPC分类号： B01D65/02 ,  B01D2321/162 ,  B01D2321/28

摘要： A peracetic acid disinfectant is used to clean particulate inorganic materials such as calcium and magnesium from fibers and filters. The method allows polysulfone filtens in particulate to be reused after soaking for at least about 18 hours, and most preferably at least about 24 hours, in the peracetic acid based solution. The cleaned filters have been shown to have a reuse life of in excess of 30% and up to about 60-80% of the original life of the filter. The peracetic acid solution and method may be used to clean both hollow fiber and pleated polysulfone filters.

摘要翻译： 使用过乙酸消毒剂从纤维和过滤器中清除颗粒状无机物质如钙和镁。 该方法允许颗粒中的聚砜滤液在过乙酸基溶液中浸泡至少约18小时，最优选至少约24小时后重复使用。 清洁的过滤器已被证明具有超过过滤器原始寿命的30％和高达约60-80％的重复使用寿命。 过乙酸溶液和方法可用于清洁中空纤维和打褶聚砜过滤器。

公开(公告)号：US06325938B1

公开(公告)日：2001-12-04

申请号：US09612240

申请日：2000-07-07

申请人： Satoshi Miyashita ,  Kenji Honjyo ,  Osami Kato ,  Kenji Watari ,  Takamitsu Takashima ,  Masanori Itakura ,  Hiroyuki Okazaki ,  Ikuo Kinoshita ,  Noriko Inoue

发明人： Satoshi Miyashita ,  Kenji Honjyo ,  Osami Kato ,  Kenji Watari ,  Takamitsu Takashima ,  Masanori Itakura ,  Hiroyuki Okazaki ,  Ikuo Kinoshita ,  Noriko Inoue

IPC分类号： B01D6506

摘要： A method for cleaning separating membranes uses a uniquely formulated detergent. The detergent includes a percarbonate-containing, material, existing in the condition in which hydrogen peroxide is adducted in carbonate and is desirably an alkali metal salt. The percarbonate decomposes the organisms deposited on the membrane surfaces while being environmentally desirable. The detergent preferably also includes at least one bivalent iron salt, which improves the cleaning capability of the percarbonate via the so-called Fenton's reaction in which hydrogen peroxide adducted in the percarbonate reacts with the iron ions to form OH— radicals which have a very high oxidative reactivity. The detergent may also contain other oxidizers, a surfactant, a chelating agent, an acid and a pH regulator. The detergent is dissolved in water prior to use.

摘要翻译： 清洗分离膜的方法使用唯一配方的洗涤剂。 洗涤剂包括含碳酸盐的材料，其存在于过氧化氢在碳酸盐中加成的条件下，优选为碱金属盐。 过碳酸盐分解沉积在膜表面上的生物，同时在环境上是可取的。 洗涤剂优选还包括至少一种二价铁盐，其通过所谓的芬顿反应改善过碳酸盐的清洁能力，其中过碳酸盐中加入的过氧化氢与铁离子反应形成具有非常高的OH-基团 氧化反应性。 洗涤剂还可以含有其它氧化剂，表面活性剂，螯合剂，酸和pH调节剂。 洗涤剂在使用前溶于水。