摘要:
[Problem] To provide a membrane treatment method and a membrane treatment apparatus for ballast water using a membrane module, which are capable of inhibiting the formation of scale on the membrane surface to reduce fouling, using a simple installation.[Means for Solving the Problem] The membrane treatment method and the membrane treatment apparatus for ballast water using a membrane module according to the invention, having a membrane treatment tank 2 and a membrane module 1 provided in the tank for continuously performing filtration while ballast water is being passed thereto as raw water; wherein a positive electrode and a negative electrode are provided in the membrane treatment tank 2 so as to come into contact with raw water in the tank, and a current passing means is provided in the tank for applying a voltage between the electrodes.
摘要:
A method for treating ship ballast water with a membrane, which can easily separate and reliably remove a fouling substance attached to a membrane and maintain the membrane flux for long periods.The method including a membrane separation step of taking in seawater in a port area in which a ship is anchored and separating a microorganism with a size equal to or greater than a predetermined size therefrom with a membrane filtration apparatus installed in or on a hull of the ship and having a filtration membrane module, a backwash step of separating a fouling substance attached to a membrane surface of the membrane filtration apparatus from the membrane surface by backwashing is provided.
摘要:
An infrared detection element includes a pyroelectric element, an upper electrode and a lower electrode located so as to have a positional relationship where the pyroelectric element is interposed therebetween, and an opening function portion formed on the upper electrode such that a film thickness of the upper electrode is small or zero.
摘要:
There is provided a communication terminal out of range determination method, a wireless communication system switching method and a communication terminal, capable of determining accurately whether or not a communication terminal is out of range. Determining whether or not the communication terminal is out of range is based on a transmission level of a transmission signal from the communication terminal to a base station.
摘要:
To provide a utilization system of ballast water that can secure cleaning water for cleaning an apparatus and be used for various uses.A ballast water utilization system including: a ballast water treatment apparatus 3 which is an apparatus for treating microorganisms or bacteria in seawater or freshwater and requires cleaning at least once a day while treatment is continuously performed; and a ballast tank 4 storing ballast water treated by the ballast water treatment apparatus 3, wherein a service tank 5 storing ballast treated water treated by the ballast water treatment apparatus 3 is provided, and the ballast treated water in the service tank 5 is made available for cleaning of the ballast water treatment apparatus 3.
摘要:
Provided are a receptacle attached with an optical isolator and a manufacturing method thereof, capable of easily performing position alignment among an end surface of a magnet, an end surface of a fiber stub, and a polarization plane of a polarizer and dimension calculating of the optical isolator without an increase in the number of parts. The optical isolator is constructed by fitting a fiber stub into which an optical fiber is inserted and of which end surface is formed to be slanted with a predetermined angle into a ferrule holder, by forming an end surface of the magnet to be slanted with the same angle as the predetermined angle, and by fixing the optical isolator element to the magnet. The receptacle attached with an optical isolator is constructed by integrally fixing the optical isolator to the end surface of the fiber stub by fitting the optical isolator into an inner diameter portion of the ferrule holder.
摘要:
A water treatment system to be installed in a tanker or other cargo ship for destruction of aquatic organisms and microorganisms that may be contained in the water, usually seawater, being pumped into the ship's ballast tank or tanks. Included is a ballast pump having an intake conduit for drawing water from the sea, and a delivery conduit for delivering the water under pressure to the ballast tank. The delivery conduit has mounted therein a slitted or otherwise open-worked screen for mechanically killing the aquatic lifeforms contained in the water by shearing action. For chemical treatment, on the other hand, part of the water being delivered by the ballast pump is bypassed into an ozone impregnator thereby to be impregnated with ozone from an ozonizer. A bypass pump repressurizes the ozone-impregnated water for returning the same into the delivery conduit.
摘要:
Disclosed is a technology that prevents a part of a touch panel-equipped display displaying an ultrasonic tomographic image from getting dirty with a fingerprint or scratch when using a drag operation to change the content of the ultrasonic tomographic image displayed on the touch panel-equipped display. According to this technology, the display screen is divided into an ultrasonic image area A1 which displays an ultrasonic image P and an operating part display area A2 which displays buttons (Fov, Pos, ROI, and Dop) for selecting a change to be made in the ultrasonic image P. The operating part display area A2 has a touch panel, and when a finger F selectively touches one of the displayed buttons and is dragged, the displayed image P of the ultrasonic image area A1 is changed on the apparatus side according to the selected changes and drag direction.
摘要:
A method of plating, which allows compositions of plating patterns of a plurality of layers to be uniform without any operational complexity, is provided. The area of the plating layer electrodeposited including plating patterns is constant in each of the plurality of layers. Accordingly, a value of plating-current density is easily maintained constant without any special operation. Consequently, the plating patterns in each of the plurality of layers is easily formed to have an uniform composition.
摘要:
There is provided a communication terminal out of range determination method, a wireless communication system switching method and a communication terminal, capable of determining accurately whether or not a communication terminal is out of range. Determining whether or not the communication terminal is out of range is based on a transmission level of a transmission signal from the communication terminal to a base station.