Kurita Water Industries Ltd.

Tetsuro Fukase

Nobuhiro Orita

Kazunari Komatsu

Hidenari Yasui

Kazuki Hayashi

Kotaro Fukuzawa

Katsura Kitatsuji

Masahide Shibata

Koichi Nakamura

Taro Iizumi

Kingo Chu

Tetsuo Koga

A state of a ballast water treatment system of a ship detected by a variety of sensors is monitored by transmitting it to a control means provided with a data storage/transmission means. The control means transmits from a satellite communication means to a satellite communication means on the receiving side via a communication satellite, and a host computer receives it. The host computer analyzes and monitors information from the various sensors Sto Sand sends back an optimal operation state, which is received by the satellite communication means on the ship side via the communication satellite, and the control means maintains an operation of the ballast water treatment system based on instructions from the host computer. According to the remote monitoring device for a ballast water treatment system as above, the ballast water treatment system can be monitored and controlled from remote.

Remote monitoring device for ballast water treatment system and remote monitoring method

The power generation efficiency of a microbial power generator is increased by using an easy and inexpensive unit. Two plate-like cation-exchange membranes are disposed in parallel in a tank. This arrangement allows an anode chamber to be formed between the cation-exchange membranes. Two cathode chambers are separated from the anode chamber by using the respective ion-permeable nonconductive membranes. An oxygen-containing gas is made to pass through the cathode chamber. An anode solution is supplied to the anode chamber, and, preferably, the anode solution is made to circulate. A biologically treated exhaust gas is used as the oxygen-containing gas to be supplied to the cathode chamber. Carbon dioxide in the biologically treated exhaust gas can promote transport of Naand Kions, and water vapor can increase the ion permeability, thereby increasing the power generation efficiency.

Microbial power generator

To increase the power generation efficiency of a microbial power generator by using an easy and inexpensive unit. Two plate-like cation-exchange membranesare disposed in parallel in a tank. This arrangement allows an anode chamberto be formed between the cation-exchange membranes. Two cathode chambersare separated from the anode chamberby using the respective ion-permeable nonconductive membranes. An oxygen-containing gas is made to pass through the cathode chamber. An anode solution L is supplied to the anode chamber, and, preferably, the anode solution is made to circulate. A biologically treated exhaust gas is used as the oxygen-containing gas to be supplied to the cathode chamber. Carbon dioxide in the biologically treated exhaust gas can promote transport of Naand Kions, and water vapor can increase the ion permeability, thereby increasing the power generation efficiency.

Method for microbially generating electricity and microbial power generator

A microbial power generation device includes an anode chamber which maintains a microbe and which is supplied with influent which includes an electron donor, a cathode chamber supplied with an electron acceptor, a nonconductive membrane having a first face and an opposing second face and arranged between the anode chamber and the cathode chamber, a first electro-conductive support material having a rough surface which has asperity spreading close to the first face of the nonconductive membrane, and formed by a porous material having approximately the same shape as the interior of the anode chamber, and arranged within the anode chamber, and a second electro-conductive support material having a rough surface which has asperity spreading close to the second face of the nonconductive membrane.

Microbial power generation device

Power generation efficiency of a microbial power generation device is improved by a simple and inexpensive means. Two plate-shaped cation-exchange membranesare disposed parallel to each other in a tank body, whereby a negative electrode chamberis formed between the cation-exchange membranes. Two positive electrode chambersare each formed so as to be separated from the negative electrode chamberby the corresponding cation-exchange membrane. An oxygen-containing gas is passed through the positive electrode chamber, a negative electrode solution L is supplied to the negative electrode chamber, and preferably the negative electrode solution is circulated. An acid gas (carbon dioxide gas) is introduced into the oxygen-containing gas to be supplied to the positive electrode chamber. Movement of Naand Kions is promoted by the pH neutralization effect produced by the acid gas, and thereby power generation efficiency can be improved.

Microbial power generation method and microbial power generation device

A powder of magnetized material is added to an aeration chamber, and aeration is conducted. The mixture is then sent to a sedimentation chamber, and solid-liquid separation is conducted. A portion of the precipitated sludge is returned to the aeration chamber as return sludge and reused. Sedimented sludge is highly concentrated, due to the action of the magnetized material. By returning a portion to the aeration chamber as return sludge, the biomass concentration becomes high, and high load operation in the aeration chamber can be achieved.

Sedimentation acceleration agent for activated sludge and method for using the same

An apparatus for aerobic biological treatment of aqueous organic wastes, which enables the achievement of a reduction of the amount of excess sludge, a stable quality of the treated water and an improved sedimentation performance of the biosludge while reducing the area of installation site and construction investment using a smaller apparatus; which apparatus comprises

Apparatus for aerobic biological treatment of aqueous organic wastes

A method for preventing activated sludge from losing its settling ability, which sometimes happens in solid/liquid separation in an activated sludge treatment of an aqueous organic waste and causes the so-called bulking and scumming of the sludge. This method involves adding either (a) a nonionic and/or an anionic surfactant, (b) a combination of a nonionic surfactant with a cationic surfactant of a form of quaternary ammonium salt or (c) a combination of a nonionic surfactant and a cationic surfactant of a form of a quaternary ammonium salt with a cationic organic flocculant, to the activated sludge treatment system.

Method for preventing activated sludge from losing its settling ability

A thermostable lipase gene coding for a thermostable lipase, a vector having this gene, a transformant containing this vector, methods for preparing them and for preparing a thermostable lipase by cultivating the transformant are disclosed. The thermostable lipase gene is obtained from a cell belonging to the bacterial strain Pseudomonas sp. KWI-56 by a technique of genetic engineering. The thermostable lipase gene is inserted into a high expression vector, which is introduced into a cell of a host microorganism to prepare a transformant. By cultivating this transformant, a thermostable lipase can be produced.

Growing community of inventors

Tokyo, Japan

Tetsuro Fukase