Gas dissolving and releasing liquid treatment system

A two-stage apparatus for dissolving a plurality of gases into a pressurized liquid stream by pressurization, releasing the pressurized liquid stream containing said dissolved gases to a reduced pressure, generating micro gas bubbles in the depressurized liquid stream, purifying the escaped gases, and stabilizing, filtering, disinfecting, and discharging the depressurized liquid stream comprising;

• (a) an inlet pipe means, an inlet nozzle assembly means connected to said inlet pipe means, influent liquid stream flow measuring means connected to the inlet pipe means for measuring an influent liquid stream flow, gas injector means connected to said inlet pipe means for feeding a first gas into said influent liquid stream, pump means connected to said inlet pipe means for forcing said influent liquid stream through said gas injector means, said liquid flow measuring means, and said nozzle assembly means;
• (b) an enclosed cylindrical pressure vessel means having a tangentially disposed liquid stream vessel inlet means connected to said inlet pipe means for delivering said influent liquid stream into said cylindrical pressure vessel means, said pump means, said nozzle assembly means and said inlet pipe means cooperating to feed the influent liquid stream under conditions to yield a rotating influent liquid stream inside said pressure vessel means which rotates at over 2500 rpm;
• and said pressure vessel means further comprising a pressure gauge, a safety valve, gas bleed off valve means, plural gas inlet means for feeding at least a second and third gases into said pressure vessel means, support legs attached to the outside wall of said pressure vessel means for supporting the pressure vessel means, gas flow meter means and regulator means connected to the plural gas inlet means for regulating the pressure in said pressure vessel means to 2-7 atmospheres, and a vessel outlet means;
• (c) a pressurized water release assembly means having an assembly inlet means connected to the vessel outlet means of said pressure vessel;
• said pressurized water release assembly means further comprising a pressure reduction valve, a horizontal pressurized water distribution pipe connected to said assembly inlet means having small holes on top, said pressurized water release assembly means further including a half circular hood mounted above said distribution pipe and means defining a channel for allowing said influent liquid stream to be depressurized in stages under laminar flow conditions for generation of micro gas bubbles with diameter less than 80 microns in the depressurized liquid stream;
• (d) mixing means directly or indirectly connected to said inlet pipe means for mixing chemicals into said influent liquid stream and producing a mixed liquid stream;
• (e) an open vessel means connected to said mixing means for receiving the mixed liquid stream from the mixing means and the depressurized liquid stream from the pressurized water release assembly means and holding the depressurized liquid stream containing said micro gas bubbles sufficiently long so that a floating scum layer forms on the free surface of the liquid and a subnatant forms below the floating scum;
• discharge means to discharge said subnatant as a clarified effluent liquid stream, means for recycling a portion of said effluent from the discharge means of said open vessel means to the pressure vessel means, sludge removal means for collection of said floating scum, gas collection and purification means positioned over the top of the open vessel means to receive and purify gas escaping from said open vessel means, said gas collection and purification means further comprising a vacuum pump, a granular activated carbon filter and an enclosure over said open vessel means;
• (f) a stabilization means comprising carbon dioxide feeding means, connected to said open vessel means for stabilizing and recarbonating said clarified effluent liquid stream, and producing the first liquid effluent stream;
• (g) the second inlet pipe means connected to a second inlet nozzle assembly means, the second influent liquid stream flow measuring means connected tot he second inlet pipe means for measuring the second influent liquid stream flow (i.e. the first liquid effluent stream flow), the second mixing means directly or indirectly connected to said second inlet pipe means for mixing chemicals and/or microorganisms into said second influent liquid stream, the second gas injector means connected to said second inlet pipe means for feeding a fourth gas into said second influent liquid stream, second pump means connected to said second inlet pipe means for forcing said second influent liquid stream through said second gas injector means, said second liquid flow measuring means, and said second nozzle assembly means;
• (h) a second enclosed cylindrical pressure vessel means having a tangentially disposed second influent liquid stream vessel inlet means connected to said second inlet pipe means for delivering said second influent liquid stream into said second cylindrical pressure vessel means, said second pump means, second nozzle assembly means and second inlet pipe means cooperating to feed the second influent liquid stream under conditions to yield a rotating influent liquid stream inside said second pressure vessel means which rotates at over 2500 rpm;
• and said second pressure vessel means further comprising a second pressure gauge, a second safety valve, second gas bleed off valve means, second plural gas inlet means for feeding at least a fifth and sixth gases into said second pressure vessel means, second support legs attached to the outside wall of said second pressure vessel means for supporting the second pressure vessel means, second gas flow meter means and second regulator means connected to the second plural gas inlet means for regulating the pressure in said second pressure vessel means to 2-7 atmospheres, and a second vessel outlet means;
• (i) a second pressurized water release assembly means having a second inlet means connected to the second vessel outlet means;
• said second pressurized water release assembly means further comprising a second pressure reduction valve, a second horizontal pressurized water distribution pipe connected to said second assembly inlet means having small holes on top, said second pressurized water release assembly means further including a second half circular hood mounted above said second distribution pipe and second means defining a channel for allowing said second influent liquid stream to be depressurized in stages under laminar flow conditions for generation of micro gas bubbles with diameter less than 80 microns in the depressurized second liquid stream;
• (j) a second open vessel means connected to said second mixing means for receiving the depressurized second liquid stream form the second pressurized water release assembly means and holding the second influent liquid stream containing said micro gas bubbles sufficiently long so that a floating scum layer forms on the free surface of the liquid and a subnatant forms below the floating scum;
• second discharge means to discharge said subnatant as a second clarified effluent liquid stream, a second means for recycling a portion of said effluent from the second discharge means of said second open vessel means to the second pressure vessel means, second sludge removal means for collection of said floating scum, a second gas collection and purification means positioned over the top of the second open vessel means to receive and purify gas escaping from said second open vessel means, said second gas collection and purification means further comprising a second vacuum pump, a second granular activated carbon filter and a second enclosure over said second open vessel means;
• (k) a second stabilization means comprising a second carbon dioxide feeding means, connected to said second open vessel means for stabilizing and recarbonating said second clarified effluent liquid stream and producing a stabilized effluent liquid stream;
• (l) a filtration means connected to said second stabilization means for filtering said stabilized effluent liquid stream, and producing a filtered effluent liquid stream;
• and
• (m) a disinfection means connected to said filtration means for disinfecting said filtered effluent liquid stream, and producing a final effluent liquid stream.

An apparatus for dissolving a plurality of gases into a pressurized liquid stream by pressurization, releasing the pressurized liquid stream containing said dissolved gases to a reduced pressure, generating micro gas bubbles in the depressurized liquid stream, purifying the escaped gases, and stabilizing, filtering, disinfecting, and discharging the depressurized liquid stream comprising:

• (a) an influent pipe means, and an influent liquid stream flow measuring means connected to the influent pipe means for measuring the influent liquid stream flow;
• (b) mixing means directly or indirectly connected to said influent pipe means for mixing chemicals into said influent liquid stream and producing a mixed liquid stream;
• (c) an inlet pipe means connected to an inlet nozzle assembly means, recycled liquid stream flow measuring means connected to the inlet pipe means for measuring recycled liquid stream flow, gas injector means connected to said inlet pipe means for feeding a first gas into said recycled liquid stream, pump means connected to said inlet pipe means for forcing said recycled liquid stream through said gas injector means, said recycled liquid flow measuring means, and said nozzle assembly means;
• (d) an enclosed cylindrical pressure vessel means having a tangentially disposed liquid stream vessel inlet means connected to said inlet pipe means for delivering said recycled liquid stream into said cylindrical pressure vessel means, said pump means, said nozzle assembly means and said inlet pipe means cooperating to feed the recycled liquid stream under conditions to yield a rotating liquid stream inside said pressure vessel means which rotates at over 2500 rpm;
• and said pressure vessel means further comprising a pressure gauge, a safety valve, gas bleed off valve means, plural gas inlet means for feeding at least a second and third gases into said pressure vessel means, support legs attached to the outside wall of said pressure vessel means for supporting the pressure vessel means, gas flow meter means and regulator means connected to the plural gas inlet means for regulating the pressure in said pressure vessel means to 2-7 atmospheres, and a vessel outlet means;
• (e) a pressurized water release assembly means having an assembly inlet means connected to the vessel outlet means of said pressure vessel means;
• said pressurized water release assembly means further comprising a pressure reduction valve, a horizontal pressurized water distribution pipe connected to said assembly inlet means having small holes on top, said pressurized water release assembly means further including a half circular hood mounted above said distribution pipe and means defining a channel for allowing said influent liquid stream to be depressurized in stages under laminar flow conditions for generation of micro gas bubbles with diameter less than 80 microns in the depressurized liquid stream;
• (f) an open vessel means connected to said mixing means for receiving both the mixed liquid stream from said mixing means and the depressurized liquid stream from the pressurized water release assembly means and holding said depressurized liquid stream containing said micro gas bubbles sufficiently long so that a floating scum layer forms on the free surface of the liquid and a subnatant forms below the floating scum;
• discharge means to discharge said subnatant as a clarified effluent liquid stream, means for recycling a portion of said effluent from the discharge means of said open vessel means to the pressure vessel means and producing a recycled liquid stream, sludge removal means for collection of said floating scum, gas collection and purification means positioned over the top of the open vessel means to receive and purify gas escaping from said open vessel means, said gas collection and purification means further comprising a vacuum pump, a granular activated carbon filter and an enclosure over said open vessel means;
• (g) a stabilization means comprising a carbon dioxide feeding means, connected to said open vessel means for stabilizing and recarbonating said clarified effluent liquid stream, and producing a stabilized effluent liquid stream;
• (h) a filtration means connected to said stabilization means for filtering said stabilized effluent liquid stream, and producing a filtered effluent liquid stream;
• and
• (i) a disinfection means connected to said filtration means for disinfecting said filtered effluent liquid stream, and producing a final effluent liquid stream.

A single-stage apparatus for dissolving a plurality of gases into a pressurized liquid stream by pressurization, releasing the pressurized liquid stream containing said dissolved gases and microorganisms to a reduced pressure, generating micro gas bubbles in the depressurized liquid stream, purifying the escaped gases, concentrating microorganisms as floating scum on the surface of said depressurized liquid stream, recycling a portion of said concentrated microorganisms in floating scum to said pressurized liquid stream for biochemical reactions, and discharging said depressurized liquid stream comprising:

• (a) an influent pipe means, and an influent liquid stream flow measuring means connected to the influent pipe means for measuring the influent liquid stream flow;
• (b) mixing means directly or indirectly connected to said influent pipe means for mixing chemicals and/or microorganisms into said influent liquid stream, and producing a mixed liquid stream;
• (c) an inlet pipe means comprising an inlet nozzle assembly means, mixed liquid stream flow measuring means connected to the inlet pipe means for measuring the mixed liquid stream flow, gas injector means connected to said inlet pipe means for feeding a first gas into said mixed liquid stream, pump means connected to said inlet pipe means for forcing said mixed liquid stream through said gas injector means, said mixed liquid flow measuring means;
• (d) an enclosed cylindrical pressure vessel means having a tangentially disposed liquid stream vessel inlet means connected to said inlet pipe means for delivering said mixed liquid stream into said cylindrical pressure vessel means, said pump means, said nozzle assembly means and said inlet pipe means cooperating to feed the mixed liquid stream under conditions to yield a rotating liquid stream inside said pressure vessel means which rotates at over 2500 rpm;
• and said pressure vessel means further comprising a pressure gauge, a safety valve, gas bleed off valve means, plural gas inlet means for feeding at least a second and third gases into said pressure vessel means, support legs attached to the outside wall of said pressure vessel means for supporting the pressure vessel means, gas flow meter means and regulator means connected to the plural gas inlet means for regulating the pressure in said pressure vessel means to 2-7 atmospheres, and a vessel outlet means;
• (e) a pressurized water release assembly means having an assembly inlet means connected to the vessel outlet means of said pressure vessel means;
• said pressurized water release assembly means further comprising a pressure reduction valve, a horizontal pressurized water distribution pipe connected to said assembly inlet means having small holes on top, said pressurized water release assembly means further including a half circular hood mounted above said distribution pipe and means defining a channel for allowing said influent liquid stream to be depressurized in stages under laminar flow conditions for generation of micro gas bubbles with diameter less than 80 microns in the depressurized liquid stream;
• (f) an open vessel means connected to said mixing means for receiving both the mixed liquid stream from the mixing means and the depressurized liquid stream from the pressurized water release assembly means and holding said depressurized liquid stream containing said micro gas bubbles sufficiently long so that a floating scum layer forms on the free surface of the liquid and a subnatant forms below the floating scum;
• discharge means to discharge said subnatant as a clarified effluent liquid stream, sludge removal means for collection of said floating scum, gas collection and purification means positioned over the top of the open vessel means to receive and purify gas escaping from said open vessel means, said gas collection and purification means further comprising a vacuum pump, a granular activated carbon filter and an enclosure over said open vessel means;
• and
• (g) means connected to said open vessel means for recycling a portion of said floating scum containing microorganisms from said sludge removal means of said open vessel means to the pressure vessel means for biochemical reactions.

A dual apparatus for dissolving a plurality of gases into a pressurized liquid stream by pressurization, releasing the pressurized liquid stream containing said dissolved gases and microorganisms to a reduced pressure, generating micro gas bubbles in the depressurized liquid stream, purifying the escaped gases, concentrating microorganisms as floating scum on the surface of said depressurized liquid stream, recycling a portion of said concentrated microorganisms in floating scum to said pressurized liquid stream for biochemical reactions, treating another portion of said liquid stream under normal one atmospheric pressure biochemically, and recycling a portion of said concentrated microorganisms in floating scum to said liquid stream under normal one atmospheric pressure comprising:

• (a) an influent pipe means, and an influent liquid stream flow measuring means connected to the influent pipe means for measuring the influent liquid stream flow;
• (b) mixing means directly or indirectly connected to said influent pipe means for mixing chemicals and/or microorganisms into said influent liquid stream, and producing a mixed liquid stream;
• (c) bioreactor means connected to said mixing means for treating a portion of said mixed liquid stream in the presence of microorganisms, oxygen, and air under normal one atmospheric pressure and producing the biochemically treated liquid stream;
• (d) an inlet pipe means connected to an inlet nozzle assembly means, mixed liquid stream flow measuring means connected to the inlet pipe means for measuring the remaining portion of the mixed liquid stream flow, gas injector means connected to said inlet pipe means for feeding a first gas into said mixed liquid stream, pump means connected to said inlet pipe means for forcing said mixed liquid stream through said gas injector means, said liquid flow measuring means, and said nozzle assembly means;
• (e) an enclosed cylindrical pressure vessel means having a tangentially disposed liquid stream vessel inlet means connected to said inlet pipe means for delivering said mixed liquid stream into said cylindrical pressure vessel means, said pump means, said nozzle assembly means and said inlet pipe means cooperating to feed the mixed liquid stream under conditions to yield a rotating liquid stream inside said pressure vessel means which rotates at over 2500 rpm;
• and said pressure vessel means further comprising a pressure gauge, a safety valve, gas bleed off valve means, plural gas inlet means for feeding at least a second and third gases into said pressure vessel means, support legs attached to the outside wall of said pressure vessel means for supporting the pressure vessel means, gas flow meter means and regulator means connected to the plural gas inlet means for regulating the pressure in said pressure vessel means to 2-7 atmospheres, and a vessel outlet means;
• (f) a pressurized water release assembly means having an assembly inlet means connected to the vessel outlet means of said pressure vessel means;
• said pressurized water release assembly means further comprising a pressure reduction valve, a horizontal pressurized water distribution pipe connected to said assembly inlet means having small holes on top, said assembly means further including a half circular hood mounted above said distribution pipe and means defining a channel for allowing said influent liquid stream to be depressurized in stages under laminar flow conditions for generation of micro gas bubbles with diameter less than 80 microns in the depressurized liquid stream;
• and
• (g) an open vessel means connected to said bioreactor means for receiving both the biochemically treated liquid stream from said bioreactor means and the depressurized liquid stream from the pressurized water release assembly means and holding the depressurized liquid stream containing said micro gas bubbles sufficiently long so that a floating scum layer forms on the free surface of the liquid and a subnatant forms below the floating scum;
• discharge means to discharge said subnatant as a clarified effluent liquid stream, means for recycling a portion of said floating scum from the discharge means of said open vessel means to the pressure vessel means and the bioreactor means, sludge removal means for collection of said floating scum, gas collection and purification means positioned over the top of the open vessel means to receive and purify gas escaping from said open vessel means, said gas collection and purification means further comprising a vacuum pump, a granular activated carbon filter and an enclosure over said open vessel means.

A low-energy apparatus for dissolving a plurality of gases into a pressurized liquid stream by pressurization, releasing the pressurized liquid stream containing said dissolved gases to a reduced pressure, generating micro gas bubbles in the depressurized liquid stream, purifying the escaped gases, concentrating microorganisms as floating scum on the surface of said depressurized liquid stream, recycling a portion of said concentrated microorganisms in floating scum to said liquid stream for biochemical reactions under normal one atmospheric pressure, and discharging the depressurized liquid steam comprising:

• (a) an influent pipe means, and an influent liquid stream flow measuring means connected to the influent pipe means for measuring the influent liquid stream flow;
• (b) mixing means directly or indirectly connected to said influent pipe means for mixing chemicals and/or microorganisms into said influent liquid stream, and producing the mixed liquid stream;
• (c) bioreactor means connected to said mixing means for treating said mixed liquid stream in the presence of microorganisms, oxygen and air under normal one atmospheric pressure and producing the biochemically treated liquid stream;
• (d) an inlet pipe means connected to an inlet nozzle assembly means, recycled liquid stream flow measuring means connected to the inlet pipe means for measuring recycled liquid stream flow, gas injector means connected to said inlet pipe means for feeding a first gas into said recycled liquid stream, pump means connected to said inlet pipe means for forcing said recycled liquid stream through said gas injector means, said liquid flow measuring means, and said nozzle assembly means;
• (e) an enclosed cylindrical pressure vessel means having a tangentially disposed liquid stream vessel inlet means connected to said inlet pipe means for delivering said recycled liquid stream into said cylindrical pressure vessel means, said pump means, said nozzle assembly means and said inlet pipe means cooperating to feed the recycled liquid stream under conditions to yield a rotating liquid stream inside said pressure vessel means which rotates at over 2500 rpm;
• and said pressure vessel means further comprising a pressure gauge, a safety valve, gas bleed off valve means, plural gas inlet means for feeding at least a second and third gases into said pressure vessel means, support legs attached to the outside wall of said pressure vessel means for supporting the pressure vessel means, gas flow meter means and regulator means connected to the plural gas inlet means for regulating the pressure in said pressure vessel means to 2-7 atmospheres, and a vessel outlet means;
• (f) a pressurized water release assembly means having an assembly inlet means connected to the vessel outlet means of said pressure vessel means;
• said pressurized water release assembly means further comprising a pressure reduction valve, a horizontal pressurized water distribution pipe connected to said assembly inlet means having small holes on top, said pressurized water release assembly means further including a half circular hood mounted above said distribution pipe and means defining a channel for allowing said influent liquid stream to be depressurized in stages under laminar flow conditions for generation of micro gas bubbles with diameter less than 80 microns in the depressurized liquid stream;
• (g) an open vessel means connected to said bioreactor means for receiving both the biochemically treated liquid stream from the bioreactor means and the depressurized liquid stream form the pressurized water release assembly means and holding the depressurized liquid stream containing said micro gas bubbles sufficiently long so that a floating scum layer forms on the free surface of the liquid and a subnatant forms below the floating scum;
• discharge means to discharge said subnatant as a clarified effluent liquid stream, means for recycling a portion of said effluent from the discharge means of said open vessel means to the pressure vessel means and producing a recycled liquid stream, sludge removal means for collection of said floating scum, gas collection and purification means positioned over the top of the open vessel means to receive and purify gas escaping from said open vessel means, said gas collection and purification means further comprising a vacuum pump, a granular activated carbon filter and an enclosure over said open vessel means;
• and
• (h) means connected to said open vessel means for recycling a portion of said floating scum containing microorganisms to said mixed liquid stream in said bioreactor means.