Selectable ion concentrations with electrolytic ion exchange
    131.
    发明申请
    Selectable ion concentrations with electrolytic ion exchange 有权
    通过电解离子交换可选离子浓度

    公开(公告)号:US20050029124A1

    公开(公告)日:2005-02-10

    申请号:US10637186

    申请日:2003-08-08

    Abstract: An apparatus to treat an influent solution comprising ions to obtain a selectable ion concentration in an effluent solution. The apparatus comprises an electrochemical cell comprising a housing comprising first and second electrodes. A water-splitting ion exchange membrane is between the first and second electrodes, the membrane comprising ananion exchange surface facing the first electrode, and an cation exchange surface facing the second electrode, or vice versa. The housing also has an influent solution inlet and an effluent solution outlet with a solution channel that allows influent solution to flow past both the anion and cation exchange surfaces of the water-splitting ion exchange membrane to form the effluent solution. A variable voltage supply is capable of maintaining the first and second electrodes at a plurality of different voltages during an ion exchange stage.

    Abstract translation: 一种用于处理包含离子的流入溶液以在流出液中获得可选离子浓度的装置。 该装置包括电化学电池,其包括包含第一和第二电极的壳体。 水分解离子交换膜位于第一和第二电极之间,该膜包括面向第一电极的阴离子交换表面和面向第二电极的阳离子交换表面,反之亦然。 壳体还具有流入溶液入口和具有溶液通道的流出物溶液出口,其允许流入溶液流过水分解离子交换膜的阴离子和阳离子交换表面以形成流出物溶液。 可变电压源能够在离子交换阶段期间将第一和第二电极保持在多个不同的电压。

    Method and apparatus for treatment of organic matter-containing wastewater
    133.
    发明授权
    Method and apparatus for treatment of organic matter-containing wastewater 有权
    用于处理含有机物废水的方法和装置

    公开(公告)号:US06547951B1

    公开(公告)日:2003-04-15

    申请号:US09914538

    申请日:2001-08-30

    Inventor: Takaaki Maekawa

    Abstract: Disclosed is a novel method for treatment of wastewater containing organic contaminant materials by oxidatively decomposing the contaminant materials by a radical reaction involving hydroxyl radicals. The method comprises passing the wastewater through a wastewater treatment conduit (6) comprising a straightly tubular member (6) and a radical generating part consisting of a truncated pyramidal or conical tubular member (1) having an inner surface layer of titanium dioxide to serve as a positive electrode and connected to the upstream end of the straightly tubular member and a negative electrode rod (4) coaxially held relative to the truncated tubular member and applying a pulsed DC voltage having a rectangular wave form at a specified frequency. The efficiency of wastewater treatment can be improved by providing an ultrasonic part consisting of a truncated tubular member similar (7) to the above and connected to the downstream end of the straightly tubular member and an ultrasonic vibrator (8) mounted thereon to emit pulsed ultrasonic waves.

    Abstract translation: 公开了一种通过使羟基自由基的自由基反应氧化分解污染物质来处理含有有机污染物质的废水的新方法。 该方法包括使废水通过包括直管状构件(6)的废水处理管道(6)和由具有二氧化钛内表面层的截头棱锥形或锥形管状构件(1)组成的自由基产生部分,以用作 正极并且连接到直管状构件的上游端,以及负极棒(4),其相对于截头管状构件同轴保持,并以特定频率施加具有矩形波形的脉冲DC电压。 通过设置由上述类似于(7)并与直管状部件的下游端连接的截头管状部件的超声波部件和安装在其上的超声波振子(8)发射脉冲超声波,可以提高废水处理效率 波浪。

    Method of treating waste-activated sludge using electroporation
    134.
    发明申请
    Method of treating waste-activated sludge using electroporation 有权
    使用电穿孔处理废活性污泥的方法

    公开(公告)号:US20020144957A1

    公开(公告)日:2002-10-10

    申请号:US10107614

    申请日:2002-03-26

    Abstract: A system that allows the flexibility of primary and secondary treatment of municipal sludge, paper-pulp sludge, animal and plant waste, whereby the treatment thereof via electroporation may be used either as the primary dewatering treatment, secondary dewatering treatment, direct WAS-treatment, and combinations with other conventional dewatering techniques, in order to provide the municipal treatment plant, or the paper-pulp treatment plant, with the most cost-effective and efficient system as possible. The electroporated-treated sludge releases hitherto unreleased biosolids exiting from the PEF-electroporation system, which are returned to aeration tanks. The electroporation process causes the release of intracellular dissolved/organic matter, which is used as nullfoodnull for the bacteria of the aeration tanks.

    Abstract translation: 可以灵活地对城市污泥,纸浆污泥,动植物废物进行一级和二级处理的系统,其中通过电穿孔处理可用作主要脱水处理,二次脱水处理,直接WAS处理, 以及与其他常规脱水技术的组合,以便为市政处理厂或纸浆处理厂提供尽可能最具成本效益和最有效率的系统。 电穿孔处理的污泥释放出从PEF电穿孔系统排出的迄今尚未释放的生物固体,并将其返回曝气池。 电穿孔过程导致细胞内溶解/有机物质的释放,其用作曝气池细菌的“食物”。

    Method for dewatering previously-dewatered municipal waste-water sludges
using high electrical voltage
    136.
    发明授权
    Method for dewatering previously-dewatered municipal waste-water sludges using high electrical voltage 失效
    使用高电压对先前脱水的城市废水污泥进行脱水的方法

    公开(公告)号:US5893979A

    公开(公告)日:1999-04-13

    申请号:US934548

    申请日:1997-09-22

    Inventor: Jeffery S. Held

    Abstract: The present invention is directed to a pulsed electric-field system, apparatus and method for the effective disinfecting and dewatering previously-dewatered, biologically active waste-water sludges (e.g., municipal waste-water sewage sludge) in an efficient manner, so as to dramatically reduce the resulting volume of the inert waste material which has to be disposed of by the municipality. The method employed sequentially consists of hydraulically pressurizing the previously dewatered sludge, pre-heating the previously dewatered sludge to a predetermined temperature range, exposing the previously dewatered sludge to a high energy pulsing electrical discharges, pressure separation of the resulting solids and liquid fraction, and final pressure extrusion of the separated solids through nozzles.

    Abstract translation: 本发明涉及一种有效消毒和脱水预先脱水的生物活性废水污泥(例如城市废水污水污泥)的脉冲电场系统,装置和方法,以便 大大减少必须由市政当局处理的惰性废物的产生量。 依次采用的方法是对先前脱水的污泥进行液压加压,将预先脱水的污泥预加热到预定的温度范围,将先前脱水的污泥暴露于高能量脉冲放电,所得固体和液体馏分的压力分离,以及 分离的固体通过喷嘴的最终压力挤压。

    Liquid separation process for suspensions by a pulsating electrical
current
    138.
    发明授权
    Liquid separation process for suspensions by a pulsating electrical current 失效
    通过脉动电流对悬浮液进行液体分离

    公开(公告)号:US4802964A

    公开(公告)日:1989-02-07

    申请号:US938707

    申请日:1986-12-08

    Abstract: A method of removing liquid from a suspension by concurrently subjecting the suspension to the action of a pulsed electrical field and optionally a concurrent sonic or ultrasonic field so as to remove liquid from the suspension. The suspension is moved into a liquid removal chamber between opposing electrodes one of which is permeable to the liquid. The sonic or ultrasonic field may then be optionally applied to the suspension concurrently with the pulsed electrical field, at a frequency and amplitude adapted to cause liquid to separate from the suspension particles. The concurrently applied electrical field between the electrodes causes the particles to migrate away from the permeable electrode and liquid to migrate toward the permeable electrode. Liquid is then removed through the permeable electrode. The method requires less energy to remove a unit of liquid, has a more advantageous rate of liquid removal and achieves a lower moisture content than if a steady electrical field is applied.

    Abstract translation: 通过同时对悬浮液进行脉冲电场和任选的并发声波或超声场的作用,从悬浮液中除去液体以从悬浮液中除去液体的方法。 将悬浮液移动到相对电极之间的液体移除室中,其中一个液体可渗透。 然后可以以适于使液体与悬浮颗粒分离的频率和幅度,将声波或超声场任选地施加到与脉冲电场同时的悬浮液。 电极之间同时施加的电场使得颗粒从可渗透电极和液体迁移离开以朝向可渗透电极迁移。 然后通过可渗透电极去除液体。 该方法需要更少的能量来去除液体单元,与施加稳定的电场相比,具有更有利的液体去除速率并且实现较低的含水量。

    Pulsed ion generator for water purification system
    139.
    发明授权
    Pulsed ion generator for water purification system 失效
    脉冲离子发生器水净化系统

    公开(公告)号:US4734176A

    公开(公告)日:1988-03-29

    申请号:US7110

    申请日:1987-01-27

    Abstract: An electrolysis water purification system employs a fixed magnitude ionization current source the output of which is effectively pulse-width modulated, by controlled switching of the connection of the current source to the ionizing electrodes. As a consequence, ion production can be controlled as a percentage of water flow time (the period during which the filtration pump is operating) and is evenly distributed throughout the water to be purified. The output of a DC power supply is coupled through a controlled switching circuit to the ionizing electrodes. The controlled switching circuit includes a presettable timer-controlled switch that operates under the control of clock generator and establishes the duty cycle of the supply of ionizing current to the electrodes. The output of the presettable timer-controlled switch is coupled through a timer-controlled polarity reversing circuit to the ionizing electrodes. The polarity reversing circuit serves to periodically reverse the current flow through the ionizing electrodes to ensure uniform wear of the electrodes and automatic cleaning of the deposits off the electrodes.

    Abstract translation: 电解水净化系统通过控制切换电流源与电离电极的连接,采用其输出有效脉冲宽度调制的固定大小的电离电流源。 因此,离子产生可以以水流时间(过滤泵运行的时间)的百分比来控制,并且被均匀分布在待净化的水中。 直流电源的输出通过受控切换电路耦合到电离电极。 受控切换电路包括可在时钟发生器的控制下操作的可预置的定时器控制开关,并且建立向电极提供电离电流的占空比。 可预置定时器控制开关的输出通过定时器控制的极性反转电路耦合到电离电极。 极性反转电路用于周期性地逆转通过电离电极的电流,以确保电极的均匀磨损和从电极自动清除沉积物。

    Continuous dewatering apparatus
    140.
    发明授权
    Continuous dewatering apparatus 失效
    连续脱水装置

    公开(公告)号:US4671874A

    公开(公告)日:1987-06-09

    申请号:US358002

    申请日:1982-03-15

    Abstract: An apparatus and method for dewatering sludges and the like as part of landfill operations by electrokinetic techniques including placing anode and cathode electrode modules in contact with the sludge and applying electrical energy to the electrodes to establish an electric field in the sludge. Charged particles within the sludge, including macro-molecules, colloids, and suspended particles, elecrophoretically migrate to the oppositely charged counter electrode and consolidate. A filtration media located at one of the electrodes permits the electro-osmotic removal of water from the sludge to encourage solids densification. The electrical energy applied to the electrodes is a chopped, time-varying, intermittent unidirectional current having a rapid rise edge which provides dewatering results comparable to prior methods that used direct current or full AC current but at substantially reduced energy consumption to provide more economical dewatering. Presently preferred optimum conditions for practicing the invention are also disclosed, including means for applying the techniques of the disclosure to a continuous dewatering method and an apparatus for practicing that method.

    Abstract translation: 一种用于通过电动技术将污泥等作为填埋操作的一部分脱水的装置和方法,包括使阳极和阴极电极模块与污泥接触并向电极施加电能以在污泥中建立电场。 污泥内的带电颗粒,包括大分子,胶体和悬浮颗粒,电泳迁移至相反电荷的对电极并进行固结。 位于其中一个电极的过滤介质允许从污泥中电渗透除去水以促进固体致密化。 施加到电极的电能是具有快速上升边缘的短切,随时间变化的间歇单向电流,其提供与使用直流或全AC电流但是以显着降低的能量消耗提供更经济的脱水的现有方法相当的脱水结果 。 还公开了用于实施本发明的目前优选的最佳条件,包括将本公开的技术应用于连续脱水方法的装置和用于实施该方法的装置。

Patent Agency Ranking