CA1064170A - Apparatus for renovation of sanitary waters - Google Patents
Apparatus for renovation of sanitary watersInfo
- Publication number
- CA1064170A CA1064170A CA303,462A CA303462A CA1064170A CA 1064170 A CA1064170 A CA 1064170A CA 303462 A CA303462 A CA 303462A CA 1064170 A CA1064170 A CA 1064170A
- Authority
- CA
- Canada
- Prior art keywords
- chamber
- aeration
- chemical
- chambers
- suspended solids
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1205—Particular type of activated sludge processes
- C02F3/1226—Particular type of activated sludge processes comprising an absorbent material suspended in the mixed liquor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1242—Small compact installations for use in homes, apartment blocks, hotels or the like
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
A B S T R A C T .
A selfcontained apparatus for on-site renovation of sanitary waters comprises of three aeration chambers, a mineral storage and dispensing container, a submerged suspended solids separator located in the third aeration chamber, a flow equalizer, a chemical oxidizing agent dispensing system, a chemical oxidation-clarifica-tion chamber and a charcoal containing chamber, all enclosed in a single tank designed for use on land as a single or multiple family waste water renovation system, or off-shore as a marine sanitation device.
A selfcontained apparatus for on-site renovation of sanitary waters comprises of three aeration chambers, a mineral storage and dispensing container, a submerged suspended solids separator located in the third aeration chamber, a flow equalizer, a chemical oxidizing agent dispensing system, a chemical oxidation-clarifica-tion chamber and a charcoal containing chamber, all enclosed in a single tank designed for use on land as a single or multiple family waste water renovation system, or off-shore as a marine sanitation device.
Description
:
T I T L ~ O F ~ N V E N T I O N .
" Apparatus for ~enovation of Sanitary ~.Iraters " .
S P ~ C I ~ I C A T I O N .
This invention relates to an apparatus for renovation of sanita-ry waters and has for its object a provision of an improved system capable of unattended and reliable operation when purifying sanita-ry waters to a high quality effluent suitable for reuse.
BACKGROUND TO T~ INV~TIO~-.
' ' 10Overfertilization and chemical pollution of surface ~aters and degradation of potable water sources in densely populated areas is becoming a serious problem, calling for efficient removal of the va-rious organic and nitrogenous compounds, phosphates and bacteria and viruses from all waste waters.
- 15Processes for the removal of the above contaminants have been established and are practiced in large municipal sewage treatment facilities, To accomodete the various process stages required to remove the various conta~inants sucr treatment plants are complex and hard to scale down to serve single family dwellings retaining the required efficiency and economy.
Consequently, housing develo ments are being served exclusively - by centralized sewage treatment plants with the sewage being collec-ted and transported to treatment plants via underground sewage col-lection - transportation systems.
As the population increases such sewage collection - transporta-tion systems become expensive and quite often a limiting factor af-fecting community planing and/or development.
T I T L ~ O F ~ N V E N T I O N .
" Apparatus for ~enovation of Sanitary ~.Iraters " .
S P ~ C I ~ I C A T I O N .
This invention relates to an apparatus for renovation of sanita-ry waters and has for its object a provision of an improved system capable of unattended and reliable operation when purifying sanita-ry waters to a high quality effluent suitable for reuse.
BACKGROUND TO T~ INV~TIO~-.
' ' 10Overfertilization and chemical pollution of surface ~aters and degradation of potable water sources in densely populated areas is becoming a serious problem, calling for efficient removal of the va-rious organic and nitrogenous compounds, phosphates and bacteria and viruses from all waste waters.
- 15Processes for the removal of the above contaminants have been established and are practiced in large municipal sewage treatment facilities, To accomodete the various process stages required to remove the various conta~inants sucr treatment plants are complex and hard to scale down to serve single family dwellings retaining the required efficiency and economy.
Consequently, housing develo ments are being served exclusively - by centralized sewage treatment plants with the sewage being collec-ted and transported to treatment plants via underground sewage col-lection - transportation systems.
As the population increases such sewage collection - transporta-tion systems become expensive and quite often a limiting factor af-fecting community planing and/or development.
- 2 - -Although small sewage trcatment plants are available, as yet they do not provide the desired degree of purification and do not offer the required process and mechanical reliability.
It is therefore an object of tris invention to provide an apparatus in ~hich the various processes to remove pollutants pre-sent in sanitary ~;aters could be carried out reliably and unatten-ded and at acceptable cost when serving single faMily d~ellings.
~iore p~rticularly it is the object of this invention to pro-vide an apparatus that viould reliably maintain all conditions re-quired for efficient biooxldation of organic matter, biological transformation of the various nitrogenous compounds, chemical pre-cipitation of soluble phosphates, chemical oxidation of the resi-dual organics, efficient removal of bacteria and viruses and will render the effluent non-toxic to aquatic life and har.mless to ve-getation.
hnother object of this invention is to provide an inexpensive and reliable method for storing and proportioning of the chemicals to the unsteady or batchwise flow of the incoming raw sewage.
hnother object of this invention is to provide an inexpensive and reliable apparatus that ~iill be easy to scale up or do-in to serve single or multiple family d~:ellings.
Another object of this invention is to provide an apparatus in ~hich efficient separation of suspended solids from the effluent is achieved inside the aeration reactor so that a separate clari-fier is not needed.
hnother object of this inv ntion is to p:~ovide an apparatus that Y;ould require only once per year replenishm~nt of the used chemicals and only once or twice per year withdro-~al of the excess slud~e.
It is therefore an object of tris invention to provide an apparatus in ~hich the various processes to remove pollutants pre-sent in sanitary ~;aters could be carried out reliably and unatten-ded and at acceptable cost when serving single faMily d~ellings.
~iore p~rticularly it is the object of this invention to pro-vide an apparatus that viould reliably maintain all conditions re-quired for efficient biooxldation of organic matter, biological transformation of the various nitrogenous compounds, chemical pre-cipitation of soluble phosphates, chemical oxidation of the resi-dual organics, efficient removal of bacteria and viruses and will render the effluent non-toxic to aquatic life and har.mless to ve-getation.
hnother object of this invention is to provide an inexpensive and reliable method for storing and proportioning of the chemicals to the unsteady or batchwise flow of the incoming raw sewage.
hnother object of this invention is to provide an inexpensive and reliable apparatus that ~iill be easy to scale up or do-in to serve single or multiple family d~:ellings.
Another object of this invention is to provide an apparatus in ~hich efficient separation of suspended solids from the effluent is achieved inside the aeration reactor so that a separate clari-fier is not needed.
hnother object of this inv ntion is to p:~ovide an apparatus that Y;ould require only once per year replenishm~nt of the used chemicals and only once or twice per year withdro-~al of the excess slud~e.
3 It is also an object of this invention to provide an apparatus capable of reliable and unattended operation v!hen proces ing ra~
se~age on ships under conditions of ship motion and vibration.
It is still another object of the invention to provide an ap-paratus that ~iould be capable to operate reliably also ~ith poY;-`
dered minerals or activated caIbon or their mixture added into the ~eration chambers.
hnother object of the invention is to provide an improved suspended solids separator that would not be affected by "sloshing"
that normally occures on ships during heavy roll and pitch condi-t ons.
Other objects and features of the invention ;Jill be seth forth more fully hereupon.
The full nature of the invention will be understood from the accompanying dra~iing and the follo~ing description and claims.
SUi;i~Y OF THE INVEI~TION.
The present invention combines all steps of -the combined physical-chemical-biological treatment of ra~ se;age l~;itnin a sin-gle tank. The tank is divided by partitions into separate reactlon chambers so that the benefits of multistage s~stems can be utili-sed. In a prefered embodiment the tank of the present invention is made of steel and equipped ~iith man~lays permitting entrance in-to individual chambers. The tank may be located below or above the ground or installed on ships to serve single or multiple family d~ellings or as~marine sanitation device.
The incoming ra.: se..age enters into first aeration chamber to be mixed ~iith mi~:ed microbial population kept in the aerated li-quor. As the ra~ se~:age enters the first aeration chamber the l vel of the liquor in aeration chambers rises. A slol; disolving mine-ral is stored in a perforated container located in the second ae-ration chamber. 'ïhen the level of the liquor rises, the aerated li-quor enters the mineral storage container and dissolves a portion of the mineral. ~rhe :~iGher is the level of the licuor in the aera-tion chambers, the more of the mineral is submerged into the liquor and dissolved.
On it's ~.ay through aeration chambers the se~iage is contacted iiith mi~ed microbial population - activated sludge suspended in the aerated liquor and thc- biodegrad2ble o ganic and nitrogenous ~ `
compounds are bioo~idized, and the soluble phos?hates are precipi-tated by the added mineral. '~he reactor liquor is in each aera-tlon cnamber aerated by compressed air introduced into the liquor through non-clog diffusers.
From the third aeratlon chamber the treated se~.~age flo~is thro-ugh a submerged multicnannel suspended solids separator loc~ted in the third aeration chamber into chemical oxidizing agent dispen-sing cha~ber, then into a cnemical oxidat on-clarification cham-ber to carry out the chemical oxidation of the residual pollutants, to kill the bacteria and viruses and to remove the reridual sus-pended solids. lhe disinfected effluent is then flo~;n ~hrouOh a charcoal bed to remove the unreacted chemical oxidizing agent to render the effluent non-toxic to aouatic life and suitable for reuse.
~ILF ~.SC~IPTIOh OF D~A'.'~ING.
Fig. 1 is an overall VieYi through a prefered embodiment of the apparatus of this invention.
D~ThIL~D D~SC~IPT_OM 0~~ T~ APP~i~A'l1US.
A cut a~ay perspective view of the complete apparatus of the present invention is sho~in in Figure 1. The apparatus comprises of first aeration chamber 100 formed by partition 112 and the out-side .~.alls and the floor of the tank 10 and equipped ~ith an air diffuser 117; the second aeration chamber 200 formed by pa titions 112, 212 and 412 and one outside .~;all and flcor oi the tank 10 and equipped 1.Jith air dilfuser 217; the third aeration chamber 300 forlDed by partitions 112, 212, 412 and. the second outside ~.all and floor of the tank 10 and eouipped ~;ith an air diffuser 317 and a submer~ed multichannel suspended solids separator 310; the flo~
equiliser 402; a chemical oxidizing agent dispens ng chamber 410;
chemical oxidizing agent storage-dispensin~ container 430; chemi-cal oxidaiion-clarification chamber 400 formed by partitions 412 and 413 and the side ~,alls and floor o~ the tank 10; and charcoal containin~ c`na.mber 420 formed by partitions 412, 413 and the sic'e ~;alls and I`loor o, the -tank 10.
~eferin~ to the system's hydraulics, at periods of zero flo-ff of the incomin~ se~a~e the lio,uid level in aeration chambers is at levels 103, 203, and 303, -~iith the rc-actor ]iquor containing mixed lio.uor sus~ended solids bein~ continuously acrated in each aera-tion chamber by compressed air introduced into the first aeration chamber via air line 116, into -the second aeration chamber via line 216 and into the third aeration c'na!nber via line 316, the ae-rated liquor being circulated from third aeration chamber 300 via openin~ 340 in partition 112 into the first aeration charnber 100, from first aeration chamber 100 via opening 115 in partit~on 112 into the second aeration cnamber 200 and from second aeration chamber 200 via opening 205 in partit;on 212 back into the third aeration c`nfimber 300. Under these conditions at zero flo~ of the incoming sev.~age the rnineral storage-dispensin~ container 101 lo-cated in aeration chamber 200 is just above the liquid level 203, the mineral not being in contact ~ith the aerated liquor maintai-ned in aeration chamber 200 and therefore not being dissolved in-to the aerated liquor.
As the raw se~iage enters via opening 104 into first aeration chamber the îiquid level in the first, second and third aeration chambers rises, the increase in the hight of the liquid level be-ing proportional to the difierence bet~een the flo-,~i of incorî.ing se.!.~age and flo~ of the clarified effluent from the flo~i eo,uiliser 402. ~he higher the flo.~. rate of tne incomin~ se-wa~e the higher is the liquid level in the three aeration cna1r.bers and consequGnt-ly the more of tne mineral is subrî,ergec into the aerated lioAuor and dissolved.
: As the m~ixture of se:iage and sludOe solids flo~,s from first aeration chamber 100 into the second aeration chaL1ber 200 Gnd from second aerat~on chamber into the third ~eration chamber 300 the biode~radable or~anic matter is bioo~idi~ed, the nitrosGnous compounds transformed to nitrates and the so-luble phosphates precipitated. In each aeration chamber the mi-~ing of tke se~age -~iith the sludge solids is maintained by com pressed air introduced into the liquor via non-clog diffusers 117, 217 and 3l7.
In the third aeration chamber 300 the mixture of purific-d sewage and mixed liquor suspended solids enters into a submer-ged multichannel suspended solids separator 310 via opening 320 located at the louer end of the separator 310, then flo~;s upu2rd in channels 321 in direction of arro~is 309, then into a centrally located collection line 323 and out of aeration cnamber 300 in-to a flow equilizer 402 located in chamber 410. On the way up in cnannels 321 suspended solids are settled out on the Y;alls of the inclined cnannels, then contlnuously slid down into the recir-culated liquor.
The suspended solids sep,rated from the purified sewage are circulated in the third aeration chamber upwardly in the space between partition l12 and the suspended solids separator 310 and do~inuardly in the space bet~een partition 412 and the suspended solids separator 310. Portion of the separatec suspended solids is continuously recycled into aeration cha~ber lOO via opening 340 located in partition l12.
The flou equilizer 402 located in the chemical oxidizing agent dispensing chamber 410 consists of a vertical pipe ~iith a narrou opening 403. The flo~; equilizer maintains the flow of the treated se~iage through the suspended solids separator within the ra-nge permitted by tne flow of the clarified effluent through the opening 403 regardles of the flow Or the incor..ing sel~:age.
~t a surge flow of the incoming se~age the se~iage accumulates in 3 the three aeration chambers due to the equilizer ~hich causes to rise the liquid level in aeration chambers to a level which is limited by the neight of the flou equili~er pipe 402. In this uay the detrimental effects of the surge of the incoming se~age on the involved biological proces-;es and on the separation of suspended solids is eliminated.
The clarlfied effluent overflo~!;s frorrl the opening 403 of the flow eauilizer 402 into the chemical oxidizin~ a~ent dispensing ch~mber 410. To flow out fl-om chamber 410 the effluent must pass through a narro~ openin~ 414 -~hich controls the flo~,~irate out of charr,ber 410 into the chemical oxidation-clarification chamber 400.
At the varying flow oI the effluent from the flo~:~ eauilizer 402 the level of the liquid in chamber 410 rises and varies within the height of the opening 414 of the vertical pipe 411. A granu-lated chem~cal oxidizing agent is stored in a perforated contai-ner 430 located in chamber 410 with the container's bo~tom tou-ching the level of the liquid in char1ber 410 at zero flo-, OI the effluent through equilizer 402. The lia,uid level in charl~ber 410 rises proportionally to the flo\~i rate of the effluent from this chamber submerglng the perforated container 430 containing the chemical oxidizing agent into the effluent and dissolving the oxi-dizing agent into the effluent proportionally to the flow of the effluent ~hrough chamber 410. Thus the amount of oxidizing agent deposited into a unit volume of the effluent in the apparatus of this invention is constant and is controled by the dimensions of the opening 414.
The effluent containing the chemical oxidizing agent flows into the louer portion of the chemical oxidation-clarification chamber 400 and via openings 425 into a submerged multichannel chemical reactor-clarifier 410. The multichannel reactor-clari-fier prtvents shortcutting of tlle chemically treated effluent ~Ji-thin the chemical oxidation-clarification chamber thus providing conditions for efficient oxi~ation of the residual impurities, efficient kill of bacteria and ~-iruses and simultaneously also efficient se~aration of the residual suspended solids. In channels 3 421 the chemically treated effluent flo~;s upr;aràly into a centra-lly located collection line 422 and then out of chamber 400 and into chamber 420 for decomposition of the residual oxidizin~ a-gent. In chamber 420 the purified effluellt flows dorjnwardly throu-gh a bed of charcoal then -~ia opening 4c3 and pipe 424 out oi the apparatus for surface disposal or for reuse.
?
'.'.hile the described apparatus is particularly useful for single family and muliiple family ~::aste water renovation units, or as a marine sanitation device, it ha.s applications to se~age treatment systems of various sizes. It is particularly useful as a standzrdized package plant for use on land or off shore in va-rious permanent or temporary ins~alations.
~'.hile tne s~stem of the present invention has been described for use ~3ith steel, it is obvious, that ~he system may be constru-cted OI any convenient material such as reinforced concrete or fiber glas. Although the present invention has been described in part with reference to specific example, rnodiIications may be constructed or used ~ithout departing from the scope of the invention ~hich is defined in ~he follo;iing claims.
se~age on ships under conditions of ship motion and vibration.
It is still another object of the invention to provide an ap-paratus that ~iould be capable to operate reliably also ~ith poY;-`
dered minerals or activated caIbon or their mixture added into the ~eration chambers.
hnother object of the invention is to provide an improved suspended solids separator that would not be affected by "sloshing"
that normally occures on ships during heavy roll and pitch condi-t ons.
Other objects and features of the invention ;Jill be seth forth more fully hereupon.
The full nature of the invention will be understood from the accompanying dra~iing and the follo~ing description and claims.
SUi;i~Y OF THE INVEI~TION.
The present invention combines all steps of -the combined physical-chemical-biological treatment of ra~ se;age l~;itnin a sin-gle tank. The tank is divided by partitions into separate reactlon chambers so that the benefits of multistage s~stems can be utili-sed. In a prefered embodiment the tank of the present invention is made of steel and equipped ~iith man~lays permitting entrance in-to individual chambers. The tank may be located below or above the ground or installed on ships to serve single or multiple family d~ellings or as~marine sanitation device.
The incoming ra.: se..age enters into first aeration chamber to be mixed ~iith mi~:ed microbial population kept in the aerated li-quor. As the ra~ se~:age enters the first aeration chamber the l vel of the liquor in aeration chambers rises. A slol; disolving mine-ral is stored in a perforated container located in the second ae-ration chamber. 'ïhen the level of the liquor rises, the aerated li-quor enters the mineral storage container and dissolves a portion of the mineral. ~rhe :~iGher is the level of the licuor in the aera-tion chambers, the more of the mineral is submerged into the liquor and dissolved.
On it's ~.ay through aeration chambers the se~iage is contacted iiith mi~ed microbial population - activated sludge suspended in the aerated liquor and thc- biodegrad2ble o ganic and nitrogenous ~ `
compounds are bioo~idized, and the soluble phos?hates are precipi-tated by the added mineral. '~he reactor liquor is in each aera-tlon cnamber aerated by compressed air introduced into the liquor through non-clog diffusers.
From the third aeratlon chamber the treated se~.~age flo~is thro-ugh a submerged multicnannel suspended solids separator loc~ted in the third aeration chamber into chemical oxidizing agent dispen-sing cha~ber, then into a cnemical oxidat on-clarification cham-ber to carry out the chemical oxidation of the residual pollutants, to kill the bacteria and viruses and to remove the reridual sus-pended solids. lhe disinfected effluent is then flo~;n ~hrouOh a charcoal bed to remove the unreacted chemical oxidizing agent to render the effluent non-toxic to aouatic life and suitable for reuse.
~ILF ~.SC~IPTIOh OF D~A'.'~ING.
Fig. 1 is an overall VieYi through a prefered embodiment of the apparatus of this invention.
D~ThIL~D D~SC~IPT_OM 0~~ T~ APP~i~A'l1US.
A cut a~ay perspective view of the complete apparatus of the present invention is sho~in in Figure 1. The apparatus comprises of first aeration chamber 100 formed by partition 112 and the out-side .~.alls and the floor of the tank 10 and equipped ~ith an air diffuser 117; the second aeration chamber 200 formed by pa titions 112, 212 and 412 and one outside .~;all and flcor oi the tank 10 and equipped 1.Jith air dilfuser 217; the third aeration chamber 300 forlDed by partitions 112, 212, 412 and. the second outside ~.all and floor of the tank 10 and eouipped ~;ith an air diffuser 317 and a submer~ed multichannel suspended solids separator 310; the flo~
equiliser 402; a chemical oxidizing agent dispens ng chamber 410;
chemical oxidizing agent storage-dispensin~ container 430; chemi-cal oxidaiion-clarification chamber 400 formed by partitions 412 and 413 and the side ~,alls and floor o~ the tank 10; and charcoal containin~ c`na.mber 420 formed by partitions 412, 413 and the sic'e ~;alls and I`loor o, the -tank 10.
~eferin~ to the system's hydraulics, at periods of zero flo-ff of the incomin~ se~a~e the lio,uid level in aeration chambers is at levels 103, 203, and 303, -~iith the rc-actor ]iquor containing mixed lio.uor sus~ended solids bein~ continuously acrated in each aera-tion chamber by compressed air introduced into the first aeration chamber via air line 116, into -the second aeration chamber via line 216 and into the third aeration c'na!nber via line 316, the ae-rated liquor being circulated from third aeration chamber 300 via openin~ 340 in partition 112 into the first aeration charnber 100, from first aeration chamber 100 via opening 115 in partit~on 112 into the second aeration cnamber 200 and from second aeration chamber 200 via opening 205 in partit;on 212 back into the third aeration c`nfimber 300. Under these conditions at zero flo~ of the incoming sev.~age the rnineral storage-dispensin~ container 101 lo-cated in aeration chamber 200 is just above the liquid level 203, the mineral not being in contact ~ith the aerated liquor maintai-ned in aeration chamber 200 and therefore not being dissolved in-to the aerated liquor.
As the raw se~iage enters via opening 104 into first aeration chamber the îiquid level in the first, second and third aeration chambers rises, the increase in the hight of the liquid level be-ing proportional to the difierence bet~een the flo-,~i of incorî.ing se.!.~age and flo~ of the clarified effluent from the flo~i eo,uiliser 402. ~he higher the flo.~. rate of tne incomin~ se-wa~e the higher is the liquid level in the three aeration cna1r.bers and consequGnt-ly the more of tne mineral is subrî,ergec into the aerated lioAuor and dissolved.
: As the m~ixture of se:iage and sludOe solids flo~,s from first aeration chamber 100 into the second aeration chaL1ber 200 Gnd from second aerat~on chamber into the third ~eration chamber 300 the biode~radable or~anic matter is bioo~idi~ed, the nitrosGnous compounds transformed to nitrates and the so-luble phosphates precipitated. In each aeration chamber the mi-~ing of tke se~age -~iith the sludge solids is maintained by com pressed air introduced into the liquor via non-clog diffusers 117, 217 and 3l7.
In the third aeration chamber 300 the mixture of purific-d sewage and mixed liquor suspended solids enters into a submer-ged multichannel suspended solids separator 310 via opening 320 located at the louer end of the separator 310, then flo~;s upu2rd in channels 321 in direction of arro~is 309, then into a centrally located collection line 323 and out of aeration cnamber 300 in-to a flow equilizer 402 located in chamber 410. On the way up in cnannels 321 suspended solids are settled out on the Y;alls of the inclined cnannels, then contlnuously slid down into the recir-culated liquor.
The suspended solids sep,rated from the purified sewage are circulated in the third aeration chamber upwardly in the space between partition l12 and the suspended solids separator 310 and do~inuardly in the space bet~een partition 412 and the suspended solids separator 310. Portion of the separatec suspended solids is continuously recycled into aeration cha~ber lOO via opening 340 located in partition l12.
The flou equilizer 402 located in the chemical oxidizing agent dispensing chamber 410 consists of a vertical pipe ~iith a narrou opening 403. The flo~; equilizer maintains the flow of the treated se~iage through the suspended solids separator within the ra-nge permitted by tne flow of the clarified effluent through the opening 403 regardles of the flow Or the incor..ing sel~:age.
~t a surge flow of the incoming se~age the se~iage accumulates in 3 the three aeration chambers due to the equilizer ~hich causes to rise the liquid level in aeration chambers to a level which is limited by the neight of the flou equili~er pipe 402. In this uay the detrimental effects of the surge of the incoming se~age on the involved biological proces-;es and on the separation of suspended solids is eliminated.
The clarlfied effluent overflo~!;s frorrl the opening 403 of the flow eauilizer 402 into the chemical oxidizin~ a~ent dispensing ch~mber 410. To flow out fl-om chamber 410 the effluent must pass through a narro~ openin~ 414 -~hich controls the flo~,~irate out of charr,ber 410 into the chemical oxidation-clarification chamber 400.
At the varying flow oI the effluent from the flo~:~ eauilizer 402 the level of the liquid in chamber 410 rises and varies within the height of the opening 414 of the vertical pipe 411. A granu-lated chem~cal oxidizing agent is stored in a perforated contai-ner 430 located in chamber 410 with the container's bo~tom tou-ching the level of the liquid in char1ber 410 at zero flo-, OI the effluent through equilizer 402. The lia,uid level in charl~ber 410 rises proportionally to the flo\~i rate of the effluent from this chamber submerglng the perforated container 430 containing the chemical oxidizing agent into the effluent and dissolving the oxi-dizing agent into the effluent proportionally to the flow of the effluent ~hrough chamber 410. Thus the amount of oxidizing agent deposited into a unit volume of the effluent in the apparatus of this invention is constant and is controled by the dimensions of the opening 414.
The effluent containing the chemical oxidizing agent flows into the louer portion of the chemical oxidation-clarification chamber 400 and via openings 425 into a submerged multichannel chemical reactor-clarifier 410. The multichannel reactor-clari-fier prtvents shortcutting of tlle chemically treated effluent ~Ji-thin the chemical oxidation-clarification chamber thus providing conditions for efficient oxi~ation of the residual impurities, efficient kill of bacteria and ~-iruses and simultaneously also efficient se~aration of the residual suspended solids. In channels 3 421 the chemically treated effluent flo~;s upr;aràly into a centra-lly located collection line 422 and then out of chamber 400 and into chamber 420 for decomposition of the residual oxidizin~ a-gent. In chamber 420 the purified effluellt flows dorjnwardly throu-gh a bed of charcoal then -~ia opening 4c3 and pipe 424 out oi the apparatus for surface disposal or for reuse.
?
'.'.hile the described apparatus is particularly useful for single family and muliiple family ~::aste water renovation units, or as a marine sanitation device, it ha.s applications to se~age treatment systems of various sizes. It is particularly useful as a standzrdized package plant for use on land or off shore in va-rious permanent or temporary ins~alations.
~'.hile tne s~stem of the present invention has been described for use ~3ith steel, it is obvious, that ~he system may be constru-cted OI any convenient material such as reinforced concrete or fiber glas. Although the present invention has been described in part with reference to specific example, rnodiIications may be constructed or used ~ithout departing from the scope of the invention ~hich is defined in ~he follo;iing claims.
Claims (5)
1. A selfcontained apparatus for renovation of sanitary waters comprising:
(a) a closed waste later storage - reaction tank provided with manways and vent;
(b) three or more aeration chambers within said reaction tank formed by the tank walls cover and common partitions res-pectively between the first, second and third aeration chambers, said common partitions each having upper ends extending above the liquid level in aeration chambers and lower ends extending to the reaction tank floor, said ae-ration chambers equipped with air diffusers for aerating and mixing the sludge solids with the processed waste wa-ter, said air diffusers being located at side wall of the aeration chambers to induce recirculation of the liquid to prevent settling of the mixed liquor suspended solids on the floors in aeration chambers, (c) restricted openings in partitions between aeration cham-bers for flowing the aerated liquor from chamber to cham-ber in the direction from first aeration chamber to the third aeration chamber, and restricted opening for flo-wing the sludge solids from third aeration chamber into first aeration chamber to distribute the sludge and the microbial population through each aeration chamber, (d) a submerged multichannel suspended solids separator loca-ted in the third aeration chamber for separation of the solid - liquid mixture into purified liquid and sludge, said sludge being retained in aeration chambers and the purified liquid flown out of the third aeration chamber, (e) a for rate equilizer to control the flow; of the sewage through aeration chambers and to control the flow; rate of the treated waste water through the submerged multichannel suspended solids separator.
(a) a closed waste later storage - reaction tank provided with manways and vent;
(b) three or more aeration chambers within said reaction tank formed by the tank walls cover and common partitions res-pectively between the first, second and third aeration chambers, said common partitions each having upper ends extending above the liquid level in aeration chambers and lower ends extending to the reaction tank floor, said ae-ration chambers equipped with air diffusers for aerating and mixing the sludge solids with the processed waste wa-ter, said air diffusers being located at side wall of the aeration chambers to induce recirculation of the liquid to prevent settling of the mixed liquor suspended solids on the floors in aeration chambers, (c) restricted openings in partitions between aeration cham-bers for flowing the aerated liquor from chamber to cham-ber in the direction from first aeration chamber to the third aeration chamber, and restricted opening for flo-wing the sludge solids from third aeration chamber into first aeration chamber to distribute the sludge and the microbial population through each aeration chamber, (d) a submerged multichannel suspended solids separator loca-ted in the third aeration chamber for separation of the solid - liquid mixture into purified liquid and sludge, said sludge being retained in aeration chambers and the purified liquid flown out of the third aeration chamber, (e) a for rate equilizer to control the flow; of the sewage through aeration chambers and to control the flow; rate of the treated waste water through the submerged multichannel suspended solids separator.
2. Apparatus according to claim 1 and comprising in addition:
(f) a container with perforated bottom to dissolve chemical oxidizing agent into the effluent flowing out from the third aeration chamber, (g) a chemical oxidizing agent dissolving chamber equipped with restricted opening causing to rise the level of the liquid in the chemical dissolving chamber in proportion to the flow rate of the liquid flowing through said chemical dissolving chamber, (h) a chemical oxidation-clarification chamber formed by the tank walls, cover and common partition between the chemical oxidation-clarification chamber and the second and third aeration chambers, said chemical oxidation-clarification chamber having sufficient reaction volume to provide the required contact time to chemically oxidize the residual pollutants and to efficiently disinfect the purified efflu-ent.
(f) a container with perforated bottom to dissolve chemical oxidizing agent into the effluent flowing out from the third aeration chamber, (g) a chemical oxidizing agent dissolving chamber equipped with restricted opening causing to rise the level of the liquid in the chemical dissolving chamber in proportion to the flow rate of the liquid flowing through said chemical dissolving chamber, (h) a chemical oxidation-clarification chamber formed by the tank walls, cover and common partition between the chemical oxidation-clarification chamber and the second and third aeration chambers, said chemical oxidation-clarification chamber having sufficient reaction volume to provide the required contact time to chemically oxidize the residual pollutants and to efficiently disinfect the purified efflu-ent.
3. An apparatus according to claim 2 and comprising in addition:
(i) a submerged multichannel chemical reactor-clarifier loca-ted in the chemical oxidation-clarification chamber, said multichannel reactor-clarifier preventing shortcutting of the chemically treated effluent within the chemical oxida-tion-clarification chamber and said multichannel reactor-clarifier permitting efficient separation of the residual suspended solids from the chemically oxidized effluent and retaining the separated suspended solids in the chemical oxidation-clarification chamber.
(i) a submerged multichannel chemical reactor-clarifier loca-ted in the chemical oxidation-clarification chamber, said multichannel reactor-clarifier preventing shortcutting of the chemically treated effluent within the chemical oxida-tion-clarification chamber and said multichannel reactor-clarifier permitting efficient separation of the residual suspended solids from the chemically oxidized effluent and retaining the separated suspended solids in the chemical oxidation-clarification chamber.
4. An apparatus according to claim 3 and comprising in addition:
(j) a mineral storage-dispensing container located in one or more aeration chambers, said mineral storage-dispensing con-tainer having a perforated bottom located above the lowest level of the liquor in aeration chambers at zero flow of incoming sewage, said mineral storage-dispensing container being submersed into the aerated liquor during the flow of the incoming sewage to dissolve the mineral into the ae-rated liquor in proportion to the incoming sewage.
(j) a mineral storage-dispensing container located in one or more aeration chambers, said mineral storage-dispensing con-tainer having a perforated bottom located above the lowest level of the liquor in aeration chambers at zero flow of incoming sewage, said mineral storage-dispensing container being submersed into the aerated liquor during the flow of the incoming sewage to dissolve the mineral into the ae-rated liquor in proportion to the incoming sewage.
5. An apparatus according to claim 4 and comprising in addition:
(k) a purification chamber formed by the tank walls, cover and common partition between the chemical oxidation chamber and said purification chamber and common partition between the second aeration chamber and said purification chamber for flowing the chemically oxidized and disinfected efflu-ent by gravity from said chemical oxidation-clarification chamber through said purification chamber, said purification chamber containing char-coal to remove the residual chemical oxidizing agent to render the final effluent nontoxic to aquatic life and harmless to vegetation.
(k) a purification chamber formed by the tank walls, cover and common partition between the chemical oxidation chamber and said purification chamber and common partition between the second aeration chamber and said purification chamber for flowing the chemically oxidized and disinfected efflu-ent by gravity from said chemical oxidation-clarification chamber through said purification chamber, said purification chamber containing char-coal to remove the residual chemical oxidizing agent to render the final effluent nontoxic to aquatic life and harmless to vegetation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA303,462A CA1064170A (en) | 1978-05-16 | 1978-05-16 | Apparatus for renovation of sanitary waters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA303,462A CA1064170A (en) | 1978-05-16 | 1978-05-16 | Apparatus for renovation of sanitary waters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1064170A true CA1064170A (en) | 1979-10-09 |
Family
ID=4111483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA303,462A Expired CA1064170A (en) | 1978-05-16 | 1978-05-16 | Apparatus for renovation of sanitary waters |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1064170A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0447667A1 (en) * | 1990-03-22 | 1991-09-25 | Bayer Ag | Reactors for waste water purification with apparatus for recycling of solids |
-
1978
- 1978-05-16 CA CA303,462A patent/CA1064170A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0447667A1 (en) * | 1990-03-22 | 1991-09-25 | Bayer Ag | Reactors for waste water purification with apparatus for recycling of solids |
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