公开(公告)号：US20150353397A1

公开(公告)日：2015-12-10

申请号：US14760176

申请日：2014-01-10

Applicant: Tzahi Y. CATH ,  Ryan W. HOLLOWAY ,  John R. HERRON ,  Keith A. LAMPI ,  Pravin MURKUTE

Inventor： Tzahi Y. CATH ,  Ryan W. HOLLOWAY ,  John R. HERRON ,  Keith A. LAMPI ,  Pravin S. MURKUTE

IPC: C02F3/30 ,  C02F3/28 ,  C02F3/12 ,  B01D65/02 ,  B01D61/00 ,  B01D61/08 ,  B01D61/18 ,  C02F1/44 ,  C02F1/52

CPC classification number: C02F3/303 ,  B01D61/002 ,  B01D61/005 ,  B01D61/025 ,  B01D61/04 ,  B01D61/08 ,  B01D61/145 ,  B01D61/147 ,  B01D61/18 ,  B01D61/58 ,  B01D65/02 ,  B01D2311/04 ,  B01D2311/06 ,  B01D2311/08 ,  B01D2311/12 ,  B01D2311/2688 ,  B01D2315/06 ,  B01D2315/10 ,  B01D2317/025 ,  B01D2317/04 ,  B01D2321/04 ,  B01D2321/06 ,  B01D2321/18 ,  C02F1/42 ,  C02F1/441 ,  C02F1/442 ,  C02F1/444 ,  C02F1/445 ,  C02F1/5245 ,  C02F1/5254 ,  C02F1/5281 ,  C02F3/1263 ,  C02F3/1268 ,  C02F3/1273 ,  C02F3/2853 ,  C02F3/302 ,  C02F3/308 ,  C02F11/02 ,  C02F11/04 ,  C02F11/123 ,  C02F2101/105 ,  C02F2101/166 ,  C02F2301/046 ,  C02F2303/04 ,  C02F2303/10 ,  C02F2303/16 ,  Y02E50/343 ,  Y02W10/15 ,  B01D2311/263 ,  B01D2311/2642

Abstract: Disclosed herein are processes, methods, and devices for use in water reclamation, including a system comprising an osmotic membrane bioreactor (OMBR), a microporous membrane bioreactor (MBR), a biological nitrogen removal system (BNR), and a source of high osmotic pressure solution (draw solution), and a reconcentration process to achieve high water recovery at low energy expenditure, which may produce purified water streams of different qualities in parallel. Disclosed processes, methods, and systems for the treating of waste water may further provide for production other useful products, for example, fertilizers. One embodiment of the disclosed systems, processes, or methods may include a hybrid membrane bioreactor comprising a semipermeable membrane and a porous membrane.

公开(公告)号：US07531042B2

公开(公告)日：2009-05-12

申请号：US10740657

申请日：2003-12-18

Applicant: Pravin Murkute ,  Pavel Tvaruzek

Inventor： Pravin Murkute ,  Pavel Tvaruzek

IPC: B08B3/12

CPC classification number: B01D61/14 ,  B01D63/02 ,  B01D63/04 ,  B01D65/02 ,  B01D65/08 ,  B01D2315/06 ,  B01D2321/04 ,  B01D2321/2066 ,  C02F3/12 ,  Y02W10/15

Abstract: A method is provided for cleaning a membrane surface or maintaining a clean outside surface of a membrane during a process of outside-in membrane separation to remove suspended solids from a liquid phase. The method involves applying pressurized gas pulses to the membrane surface with individual pulse lengths of about 0.1 to 10 seconds. The pulses may be injected singularly with an interval of about 10 to 1000 seconds between pulses for a total duration of about 0.1 to 1000 hours. Alternatively, the pulses may be injected in clusters of about 2 to 100 pulses with an interval of 50-300% of the pulse length between individual pulses for a total duration of about 10 to 1000 seconds. In a preferred embodiment, both types of pulsation methods are combined in a particular sequence. The expanding gas directed toward the membrane surface in the course of one pulse dissipates energy of up to about 40 kJ/m3. One embodiment of the cleaning method involves backwashing the membrane with a permeate and applying the pressurized gas pulses during the filtration and/or backwashing steps of a filtration cycle.

Abstract translation: 提供了一种在膜分离过程中清洗膜表面或保持膜的干净外表面以从液相中除去悬浮固体的方法。 该方法包括将加压气体脉冲施加到膜表面，具有约0.1至10秒的各个脉冲长度。 脉冲可以在脉冲之间以约10至1000秒的间隔单独注入，持续时间为约0.1至1000小时。 或者，脉冲可以以大约2至100个脉冲的脉冲串注入，脉冲长度在每个脉冲之间具有50-300％的间隔，持续时间约为10至1000秒。 在优选实施例中，两种类型的脉动方法以特定顺序组合。 在一个脉冲过程中朝向膜表面的膨胀气体消耗高达约40kJ / m3的能量。 清洁方法的一个实施方案包括用渗透物回洗膜并在过滤循环的过滤和/或反冲洗步骤期间施加加压气体脉冲。