Electrolytic disinfectant system

• US 5,958,229 A
• Filed: 03/27/1998
• Issued: 09/28/1999
• Est. Priority Date: 04/02/1997
• Status: Expired due to Fees

• Current Assignee: the united states of america as represented by the secretary of the navy
• Original Assignee: the united states of america as represented by the secretary of the navy
• Inventors: Wenzel, Thomas E., Filiopoulos, George
• Primary Examiner(s): Woo, Jay H.
• Assistant Examiner(s): LAWRENCE JR, FRANK M
• Application Number:
  US09/048,794
• Time in Patent Office: 550 Days
• Field of Search: 210/143, 210/101, 210/188, 210/192, 210/198.1, 210/218, 210/180, 210/206, 210/756, 204/278
• US Class Current: 210/206
• CPC Class Codes: B01D 19/0068 General arrangements, e.g. flowsheets B01D19/0063 takes precedence
• CPC Class Codes: C02F 1/001 Processes for the treatment of water whereby the filtration technique is of importance C02F1/44 takes precedence; construction of filters in general B01D24/00 - B01D41/00
• CPC Class Codes: C02F 1/46104 Devices therefor; Their operating or servicing
• CPC Class Codes: C02F 1/46109 Electrodes
• CPC Class Codes: C02F 1/4674 with halogen or compound of halogens, e.g. chlorine, bromine
• CPC Class Codes: C02F 2201/4612 Controlling or monitoring
• CPC Class Codes: C02F 2201/4618 Supplying or removing reactants or electrolyte
• CPC Class Codes: C02F 2209/006 comprising a software program or a logic diagram
• CPC Class Codes: C02F 2301/043 Treatment of partial or bypass streams
• CPC Class Codes: C02F 2303/04 Disinfection
• CPC Class Codes: C25B 11/093 at least one noble metal or noble metal oxide and at least one non-noble metal oxide

Abstract

An electrolytic disinfectant system especially useful in a maritime application for treating freshwater so as to render it potable, provides a brine solution that is stored in a tank from which hypochlorite as the disinfectant is fed to a freshwater supply. Gases also fed to the disinfectant storage tank including hydrogen is discharged therefrom and passed to a hydrogen recombiner through which the hydrogen is disposed of by reaction with oxygen under control of external heating bands to generate water vapor. The system thereby provides enhanced disinfectant effectiveness and eliminates storage of hazardous chemicals.

Claims

1. In combination with a system for disinfecting water by mixing thereof with hypochlorite accompanied by other gaseous products such as hydrogen, including:

means for storing said hypochlorite with the other gaseous products;

pump means for inducing flow of the hypochlorite from the storing means under pulsating pressure and means for injecting said flow of the hypochlorite into the water, the improvement residing in separation of the hypochlorite from the other gaseous products within the storing means for removal of the hydrogen therefrom, including;

means mixing the other gaseous products discharged from the storing means with gaseous material containing oxygen; and

heating band means on the mixing means for inducing reaction between the oxygen and the hydrogen in the other gaseous products to produce water vapor through which the hydrogen is removed.

2. The system as defined in claim 1 including powered electrical circuit means operatively connected to the heating band means for operational control of said mixing means.

3. The system as defined in claim 2, wherein said gaseous material containing the oxygen is air;

blower means for inducing inflow of the air into the hypochlorite storing means under control of the powered electrical circuit means; and

means for testing said inflow of the air for determining said control of the blower means.

4. The system as defined in claim 1, wherein said gaseous material containing the oxygen is air;

blower means for inducing inflow of the air into the hypochlorite storing means.

5. The system as defined in claim 4, including means for electrolytically generating said hypochlorite and the other gaseous products from a brine water solution derived from a source of water and a briner tank within which the water and salt is mixed.

6. The system as defined in claim 1 including means for electrolytically generating said hypochlorite and the other gaseous products from a brine water solution derived from a source of water and a briner tank within which the water and salt is mixed.

7. In a system for disinfecting water in response to treatment thereof with hypochlorite generated by electrolysis producing other gaseous products including gaseous hydrogen, the improvement residing in apparatus for removing the gaseous hydrogen during said treatment of the water, comprising:

means for separating said other gaseous products from the hypochlorite;

means for mixing the separated gaseous products with gaseous material containing oxygen;

band means for heating the separated gaseous products and the gaseous material during said mixing thereof for inducing reactive combining of the gaseous hydrogen and the oxygen therein to produce water; and

means for disposing of the water produced by said mixing and heating means to effect said removal of the gaseous hydrogen.

8. The system as defined in claim 7, wherein said band heating means is under control of external bands through which said reactive combining is induced within a temperature range of approximately 100°

C. to 400°

C.