Abstract: A deionized or high purity water producing method is describing wherein ions and non-ionic substances are removed. The method includes pretreating feed water to remove suspended non-ionic substances, containing the pretreated water with first and second ion exchange resins that include a boron selective ion exchange resin, and stratifying or mixing together the first and second resins within an ion exchange column. The boron selective ion exchange resin is included to remove boron ions contained in the pretreated water.

Abstract: A surfactant is added to anodic or cathodic water obtained by electrolyzing deionized water or high-purity water. Then, an object of treatment is treated with the anodic or cathodic water containing the surfactant. The object of treatment may be treated, in this way, while irradiating it with an ultrasonic wave having a frequency between 30 kHz and 3 MHz. Furthermore, the anodic or cathodic water is continuously jetted or dropped onto the object of treatment from a nozzle, while irradiating an ultrasonic wave at least at a part in the feed pipe of the anodic or cathodic water.

Abstract: A high-purity water producing equipment comprises a primary purification treatment system, a primary deionized water tank, a secondary purification treatment system for producing high-purity water from a primary deionized water, a circulatory system pipe for returning the produced high-purity water to a primary deionized water tank and a branch water feed system branched off from the circulatory system for feeding the high-purity water to a use point. An electrolytic unit for producing the anolyte EIW (electrolytic ionized water) to be catholyte EIW from the electrolysis of the high-purity water is provided as a bypass midway along the circulatory system. The anolyte EIW is added to the circulatory pipe downstream of the branching point toward the use point, when cleaning of units is necessary.

Abstract: The present invention provides a device for biological wastewater treatment which prevents flotation and deformation of mesh tubes packed in a reactor tank as microorganism retaining materials. Device for biological water treatment 10 of the present invention comprises reactor tank 11; microorganism retaining media 12, which are installed in the tank; and air diffuser tubes 14, and wastewater distributor tube 16, both of which are installed under the microorganism retaining media. The microorganism retaining media comprise supporting media 22 and mesh tubes 24, which are installed on the supporting media. The supporting media are constituted in a manner that at least two the beams 26 are arranged on each supporting tier in parallel at certain intervals and the direction of the arrangement of the beams is alternately shifted by an angle of 90 degrees at every supporting tier.

Abstract: Electric parts including semiconductor substrates, glass substrates and the like are washed with various cleaning solutions. After the cleaning, said parts are cleaned with either anolyte or catholyte electrolytic ionized water (EIW) produced from deionized water.

Abstract: An electrolytic ionized water (EIW) producing apparatus comprises an anode, a cathode, an electrolyzer which includes an anode chamber, a cathode chamber and an intermediate chamber, inlet lines for supplying an influent water to the three chambers, and outlet lines for discharging effluent water from the chambers. Further, an acidic electrolyte supplying unit is connected to the outlet line from the anode chamber, and an alkaline electrolyte supplying unit is connected to the outlet line from the cathode chamber. The electrolyte supplying units can selectively control at least the dosage level of elelctrolyte(s) to be supplied, the composition and concentration of the electrolyte(s) or pH of EIW after the addition of the electrolyte(s).

Abstract: In an electrolytic ionized water (EIW) producing apparatus, a three-chamber electrolyzer includes an anode chamber, a cathode chamber and an intermediate chamber. An influent such as deionized water is supplied to these chamber via inlet lines. Further an electrolyte supplying units are connected to the inlet lines of the anode chamber and the inlet line of the cathode chamber.

Abstract: Disclosed is a novel continuous ion exchange apparatus capable of performing both ion exchange treatment and regeneration treatment within a single column by the use of ion exchange resin(s) whose ion exchange abilities can be regenerated by acid or alkali.

Abstract: Disclosed is a process for producing high-purity glucose by saccharifying liquefied starch with the aid of an enzyme, in which the saccharification reaction of the liquefied starch is discontinued at a point where the glucose content is less than 96% by weight, preferably within the range of 80 to 93% by weight, on a solid basis. The resulting saccharified solution is filtered, concentrated and softened as required, and then fractionated by subjecting it to column chromatography. Thereafter, the resulting glucose fraction is recovered. This process makes it possible to produce high-purity glucose efficiently in spite of a reduction in saccharification time.

Abstract: A filter vessel is partitioned with a watertight partition to form a common upper filtrate collection compartment in the upper part of the filter vessel. A plurality of hollow fiber modules each having upper and lower filtrate outlet ports are vertically disposed in the filter vessel to communicate with the common upper filtrate collection compartment via the upper filtrate outlet ports thereof. The hollow fiber modules also communicate with a lower filtrate collection casing via the lower filtrate outlet ports thereof. At least one conduit is provided in the filter vessel to allow the lower filtrate collection casing to communicate therethrough with the common upper filtrate collection compartment.

Abstract: An apparatus for biological treatment of water in which a water containing organic matter (e.g. waste water, recovered water, or untreated water in water treatment works) is biologically treated to decompose and remove the organic matter, which apparatus comprises a formed material comprising a felt-like activated carbon fiber cloth, accomodated in the treatment vessel as a packing medium, which has a ratio of surface area (cm.sup.2) of felt-like activated carbon fiber cloth to effective volume (cm.sup.3) of the treatment vessel, of 0.5-50 cm.sup.2 /cm.sup.3, and which is arranged so that the cloth surface is vertical and the cloth-to-cloth distance is 0.5-2.0 cm, thereby shortening the rise time from operation start to stable operation, and efficiently operating over a long period of time.

Abstract: A filter vessel is partitioned into a first, second and third compartments with upper and lower watertight partitions. A plurality of hollow fiber modules each having upper and lower filtrate outlet ports are vertically disposed in the second compartment, and upward-detachably fixed in the filter vessel. Each hollow fiber module is watertightly joined with a lower water collection tube communicating with the third compartment by means of a jointing means capable of vertical elastic movement. Feed water fed into the second compartment is filtered through walls of porous hollow fibers in the hollow fiber modules into the bores of the porous hollow fibers, through which the filtrate is conducted into the first compartment via the upper filtrate outlet ports of the hollow fiber modules as well as into the third compartment via the lower filtrate outlet ports of the hollow fiber modules and lower water collection tubes joined with the respective hollow fiber modules.

Abstract: The present invention provides a process for production of starch sugars, wherein starch is subjected to liquefaction and saccharification to prepare a mixture containing 10-50% by weight, based on the total solid content, of glucose and 30-50% by weight, also based on the total solid content, of maltose and the mixture is concentrated so as to have a total solid content of 40-70% by weight; and the resulting mixture is subjected to component separation using a chromatographic separator of simulated moving bed type capable of fractionating the mixture into at least three fractions, to produce a glucose fraction with a glucose purity of at least 97% by weight, a maltose fraction with a maltose purity of at least 80% by weight and a high-purity oligosaccharide fraction at a high efficiency in one operation.

Abstract: It is an object of the present invention to provide a valve having a function of preventing liquid from stagnating in a branch pipe connected to a main pipe and or in the valve provided for the branch pipe when the valve is closed. The valve is characterized in that a diversion member which can divert the flow of liquid is inserted in a liquid passageway in the valve case connected to an end portion of the branch pipe in such a manner that the end portion of the diversion member extends into the main pipe.