| Patent Number |
Title Of Patent |
Date Issued |
| 7320759 |
Sludge treatment method |
January 22, 2008 |
| A sludge treatment method allowing an improvement in a phosphorus recovery rate and sludge volume reduction by efficiently eluting phosphorus in the sludge. The sludge treatment method includes: a step of foaming a sludge-containing liquid by blowing an ozone-containing gas into the |
| 7288191 |
Sludge treatment apparatus |
October 30, 2007 |
| A sludge treatment method allowing an improvement in a phosphorus recovery rate and sludge volume reduction by efficiently eluting phosphorus in the sludge. The sludge treatment method includes: a step of foaming a sludge-containing liquid by blowing an ozone-containing gas into the |
| 7070747 |
Process of eluting and recovering phosphorus from sludge |
July 4, 2006 |
| In a process of eluting phosphorus from sludge into a liquid phase and recovering the phosphorus efficiently, cell walls of microorganisms in the sludge are ruptured by a process selected from crushing sludge (for example, treating with an ultrasonic wave homogenizer), treating with |
| 7063794 |
Water treatment apparatus |
June 20, 2006 |
| A water treatment apparatus dissolving an oxidizer in wastewater at a fast speed and at a high efficiency to decompose substances at a high decomposition rate. The apparatus includes an ultraviolet radiation part having an elongated tubular configuration, and receiving an axially ext |
| 6884355 |
Process for treating organic wastewater and apparatus for treating the organic wastewater |
April 26, 2005 |
| A process for treating organic wastewater which comprises treating organic wastewater with ozone and successively with alkali and introducing said alkali treated organic wastewater into an anaerobic digestion tank for anaerobic digestion. Instead of the ozone and successive alkali tr |
| 6878284 |
Method and apparatus of treating water containing a nitrogen compound |
April 12, 2005 |
| A method of treating water containing a nitrogen compound, and an apparatus of treating water containing a nitrogen compound at high speed without using a biologically unstable treatment causing eutrophication in lakes and swamps. The waste water is introduced into an adsorbing tank that |
| 6589397 |
Electric energy converting/storing method |
July 8, 2003 |
| An electric energy conversion/storage system includes an ozone generating means (12) for producing an ozonized gas from a raw material gas containing oxygen by utilizing electric energy, an ozone adsorbing/desorbing means (15) for adsorbing ozone contained in the ozonized gas and des |
| 6537508 |
Electric energy converting/storing system |
March 25, 2003 |
| An electric energy conversion/storage system includes an ozone generating means (12) for producing an ozonized gas from a raw material gas containing oxygen by utilizing electric energy, an ozone adsorbing/desorbing means (15) for adsorbing ozone contained in the ozonized gas and des |
| 6495109 |
Ozone supplying apparatus |
December 17, 2002 |
| An ozone supplying apparatus comprising an ozone generator for generating ozonized oxygen from raw material oxygen, an adsorption/desorption device for adsorbing and storing ozone from ozonized oxygen and desorbing the ozone, and an ozone desorbing means for desorbing the adsorbed and st |
| 6315962 |
Ozone producing apparatus |
November 13, 2001 |
| An ozone producing apparatus includes an ozone generator for generating ozonized oxygen, an adsorption/desorption tower for adsorbing and storing ozone from the ozonized oxygen, and an ozone desorbing device for desorbing adsorbed and stored ozone for supply, wherein the apparatus fu |
| 6303034 |
Waste water ozonization process and apparatus |
October 16, 2001 |
| During a waste water treatment process such as an activated-sludge process using microorganisms, the present invention ozonizes a microorganism-mixed liquid. It reduces the amount of microorganisms remaining, prevents a microorganism floc from sedimenting inappropriately, and recovers |
| 6228331 |
Ozone supplying apparatus |
May 8, 2001 |
| An ozone supplying apparatus comprising an ozone generator for generating ozonized oxygen from raw material oxygen, an adsorption/desorption device for adsorbing and storing ozone from ozonized oxygen and desorbing the ozone, and an ozone desorbing means for desorbing the adsorbed and st |
| 6214298 |
Ozone producing apparatus responsive to an abnormal driving condition |
April 10, 2001 |
| An ozone producing apparatus comprising an ozone generator for generating ozonized oxygen, an adsorption/desorption tower for adsorbing and storing ozone from the ozonized oxygen generated by the ozone generator, and an ozone desorbing means for desorbing the adsorbed and stored ozone fo |
| 6214240 |
Method for ozone treatment using a mixture of ozone and hydrogen peroxide |
April 10, 2001 |
| Hydrogen peroxide in a hydrogen peroxide reservoir is supplied to an effluent. Ozone gas generated in an ozone generating apparatus is delivered through branched piping to two ozone supplying points and is supplied to the effluent. The ozone and the supplied hydrogen peroxide react t |
| 6086772 |
Method and apparatus for preventing biofouling in cooling water system |
July 11, 2000 |
| A method for preventing biofouling in a cooling water system wherein ozone of high density is intermittently injected into a circulating line of a cooling water system in which cooling water is made to circulate in a closed system which includes a cooling tower and a heat exchanger. Ther |
| 6083464 |
Ozone supplying apparatus with fluid purification and recycling |
July 4, 2000 |
| An ozone supplying apparatus comprising an ozone generator, an adsorption/desorption device for adsorbing and storing ozone from ozonized oxygen, and an ozone desorbing means, the apparatus being arranged to return oxygen to the ozone generator after desorbing ozone therefrom to deso |
| 6054102 |
Ozone producing apparatus utilizing feedback control from ozone density measurement |
April 25, 2000 |
| An ozone producing apparatus comprising an ozone generator, an adsorption/desorption tower, and an ozone desorbing means for desorbing adsorbed and stored ozone for supply, wherein the apparatus further includes an ozone density measuring means, and a control circuit for adjusting an |
| 5888271 |
Ozone storing method and ozone storage system |
March 30, 1999 |
| An ozone storage system which allows energy required for producing and storing ozone to be reduced and which supplies ozone as stored to an ozone consumer stably in continuation. The system includes an ozone generator (1) for generating an ozonized oxygen gas from an oxygen containing ga |
