CN203295314U - Improved sidestream reaction ARP (acid regeneration of plant) system for purifying waste water through biological water - Google Patents
Improved sidestream reaction ARP (acid regeneration of plant) system for purifying waste water through biological water Download PDFInfo
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- CN203295314U CN203295314U CN2012206235098U CN201220623509U CN203295314U CN 203295314 U CN203295314 U CN 203295314U CN 2012206235098 U CN2012206235098 U CN 2012206235098U CN 201220623509 U CN201220623509 U CN 201220623509U CN 203295314 U CN203295314 U CN 203295314U
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Abstract
The utility model relates to an improved sidestream reaction ARP (acid regeneration of plant) system for purifying waste water through biological water, and particularly relates to a system applicable to treating waste water. The system comprises at least one treating pond (A) which is connected to at least one settling pond (B), the settling pond (B) is connected with at least one sidestream reactor (C) which is connected to the at least one treating pond (A), the treating pond (A) is further provided with an inlet, the settling pond (B) is further provided with one or more liquid and/or solid outlets, and a system which is directly communicated with a pipeline is provided between the settling pond (B) and the treating pond (A).
Description
Technical field
The present invention relates to a kind of system for wastewater treatment.More particularly, the present invention relates to a kind of like this system, the effluent that wherein uses returned sluge to carry out nitrogen and phosphorus (it removes in wastewater treatment equipment) in the effluent reactor is removed, and described mud is communicated with the treating pond fluid to connect separately.
Background technology
Due to the demand that increases from the legislator in the whole world, for the technique of health, municipal administration, commercial and industrial wastewater treatment with technology constantly has been modified and new equipment constantly is added.
At the biological method of all wastewater treatments basic thought behind, be to introduce and the contacting of microorganism, described microorganism take inorganic in waste water with organic substance as food.Pollutant levels in waste water, comprise inorganic or organonitrogen and inorganic or organophosphorus thus, and biochemical oxygen demand (BOD) (BOD), chemical oxygen demand (COD) (COD) and total suspended solid (TSS) also are lowered.Biological treatment principle behind is that microorganism is to the degraded of existing pollutent in waste water and growth thereon.Organic materials is converted into cellular material by the metabolism of microorganism, its be no longer in solution or disperse---can be in secondary clarifier by simple gravity settling from aqueous phase separation.So clean many when leaving the ejecta of the processing of described system and entering described wastewater treatment equipment (WWTP) than it.
In typically based on the wastewater treatment equipment of carrying out a biological disposal upon, incoming waste water is pretreated in primary treatment, and wherein a part of organism, comprise that suspended solids is removed by sedimentation.After this primary treatment, the biological treatment of described waste water experience, wherein the pollutent in described waste water is degraded in bioprocess technology, in described bioprocess technology, uses microorganism from waste water, removing remaining organism, nitrogen and phosphorus.
Described biological treatment can comprise that some the treatment stage, it comprises anaerobic treatment district and aerobic treatment district.Therefore by in different districts, using controlled processing condition, microbial growth and Metabolic activity are controlled and utilized.
After biological treatment, allow the waste water after described processing to clarify/precipitate the predetermined time section at second-level settling pond, from the top of described settling tank, extract ejecta and discharge after this.The part of active deposit mud (its be included in microorganism during wastewater treatment in aeration tank growth and the biomass that produce) be removed, in order to dewater and to dispose, and another part of excess sludge can be used as active returned sluge (ARS) and turns back to biological treatment to strengthen biological degradation.Described active returned sluge can turn back to biological treatment reactor without any subsequent disposal.Perhaps, described active returned sluge can stand initial aerobic treatment to increase aerobic sludge age and to improve the removal of nitrogen in the secondary treatment district.In this way, can easily to the underload system, upgrade, when for example removal has stricter restriction to nitrogen when the new regulation requirement.
The amount of ARS in WWTP during for the treatment of technique by rate limiting, and if there be not excessive to nitrogen of COD, for example the ratio of COD:N is lower than 7,6 and even 5, existing WWTP can not effectively meet nitrogen ejecta standard.And, be generally used for the aerator that returned sluge processes and dally at part-time, typically in time of 50%.This amount that just means aerator may must double, and all hydrolysis COD(HCOD), its anaerobism at described wastewater treatment equipment produces in mutually and it is utilized by biological phosphate-eliminating (bio-P) Institute of Micro-biology, will be degraded and then can not in treating pond, be used to denitrogenation or biological dephosphorization in mutually aerobic.
Therefore, although wastewater processing technology is in sustainable development, still also have for biological wastewater treatment device further improved in the urgent need to, the use range of expansion is provided, and still meet for efficiency and to the high request of the removal of unwanted organic and mineral compound (for example total nitrogen, total phosphorus, total suspended solid, biological oxygen demand and chemical oxygen demand (COD)), and irrelevant with accessible COD.
Therefore, an object of the present invention is to provide the improved system for biological treatment, relate to effluent reaction (ARP) technology, it has the better rate of capacity utilization of accessible COD and thus waste water is purified more efficiently.
Summary of the invention
Under above-mentioned background, an object of the present invention is to provide the system that is applicable to by Wastewater Treated by Activated Sludge Process waste water, described system comprises at least one treating pond, it is connected at least one settling tank, described settling tank is connected at least one effluent reactor, and described effluent reactor is connected to described at least one treating pond, and described treating pond further has the entrance for initial charge, wherein said settling tank also comprises one or more liquid and/or solid outlet, and wherein between settling tank and treating pond, provides direct interconnected pipeline system.
Should be understood that the described direct interconnected pipeline system meaning refers to one or more interconnective pipelines.The mixing (as shown in Figure 1A-C) of different logistics can occur.Such structure is still within the definition that directly interconnected pipeline system provides.
Have now found that surprisingly by from the settling tank to the treating pond, introducing two-part returned sluge, wherein only have first part to be connected to the effluent reactor, the overall removal of inorganic and organic substance is more efficient than traditional wastewater treatment equipment (wherein returned sluge part processed and return to described treating pond).In this special system, a first part of active deposit mud experiences and is suitable for aerobic and/or anaerobic treatment nitrated and denitrification process and dephosphorization in the effluent reactor, and second section turns back to described treating pond without any the effluent processing.
By concentrated described biological respinse consuming time in the smaller size smaller at the effluent reactor, hydrolysis will be more efficient.For example the hydrolysis rate under anaerobic treatment continues to many 40 hour residence time with constant rate of speed in described effluent reactor.
This will provide a kind of Waste Water Treatment more flexibly when having excess waste, because COD content can be concentrated and/or use in the effluent reactor, the second section of the returned sluge in settling tank directly turns back to described treating pond simultaneously, thereby can affect in situation and move the hydrolysis (HCOD) that easy to reach COD is provided in the flow rate fluctuation that is not subjected to incoming waste water.
In addition, system of the present invention provides a kind of and has had the technical scheme of handiness with respect to accessible COD content.Therefore, in the situation that described COD is lower to the ratio of nitrogen, typically lower than 7, be preferably lower than 6, more preferably lower than 5, due to effluent reactor and the structure that directly is communicated with, still have efficient denitrogenation between settling tank and treating pond.This in the world the ratio area extremely low or that nitrogen content is high of COD and nitrogen be useful especially.For example in China, due to the low-fat food waste and due to the frequent pre-treatment of industrial waste, just meet above-mentioned situation.
The benefit of system of the present invention also is that it removes the phosphorus that is present among untreated effluent more effectively than the prior art systems that mainly concentrates on denitrogenation.
Finally, because system of the present invention can be used less pipeline and less effluent reactor compared with the prior art systems, so the installation cost of system of the present invention is lower.Except cost, because be used for improving the required space of waste water treatment process, be limited, so this also has influence on the handiness that realizes system of the present invention among existing wastewater treatment equipment.
Therefore in a word, the present invention relates to a kind of system, wherein in the effluent reactor with preferred constant active sludge flow, be hydrolyzed, and the oxidable pollutent (HCOD) of the hydrolysis that wherein produces can be used to biological dephosphorization and denitrogenation by the microorganism in treating pond and the further connection that mud is provided to described treating pond between settling tank and treating pond.
The anaerobic treatment of carrying out in closed section, allow the volatile lipid acid (VFA) that exists in polyphosphate microorganism (bacterium) picked-up waste water and discharge phosphorus with phosphatic form, to improve from waste water, absorbs phosphatic future potential.
In providing the section of aerating apparatus, waste water is carried out to aeration, and allow ammonia, R-NH
3 +, and NH
4 +Nitrated is nitrite anions NO
2 -, and final nitrated be nitrate radical NO
3 -.Described nitrated microorganism is special and poor growth.Like this, the aerobic treatment of time enough for described active sludge must be arranged, so that this microbial growth can be faster than the settled sludge removal speed of discharging in settling tank.Aeration has also promoted to consume by heterotrophic COD and BOD.
When degraded COD material, if can not get oxygen, many COD remove microorganism can utilize NO
3 -As oxygenant, and by NO
3 -Be converted into free nitrogen, N
2.
The removal of phosphorus is the special microorganism of a kind of use, i.e. biological phosphate-eliminating (bio-P) bacterium and the two-stage process of carrying out.If being in, the biological phosphate-eliminating bacterium there is no oxygen and NO
3 -Environment, described biological phosphate-eliminating bacterium can be by to water, removing phosphoric acid salt, VFA-COD is absorbed and is converted into organic polymer, PHB, in cell as the phosphate compounds of energy storage polymerization.
When described biological phosphate-eliminating bacterium is held under aerobic conditions in next step, the phosphorus that this biological phosphate-eliminating bacterium absorbs will be more than what once removed, and this is commonly referred to as " excess ingestion " process.The HCOD that utilizes except phosphorus bacteria described in this step than the HCOD that absorbs in the first release steps many 4 times.
Biological P-bacterium all relies on HCOD in anaerobism and aerobic step, and is suppressed by the nitrate concentration more than about 1mg/l on bacterium described in the first step.Therefore, a critical aspects of dephosphorization is to strengthen the growth in mutually make it discharge phosphoric acid salt in anaerobism of described bacterium, with prepare to allow described bacterium in treating pond to the picked-up of phosphorus.
The phosphorus that absorbs will be removed together with unnecessary mud.Described biological phosphate-eliminating bacterium can only easily be used the compound (HCOD) of biodegradable compounds or hydrolysis, preferably with soluble form, and the concentration of this compound is unsatisfactory for biological phosphate-eliminating under the cold climate condition in the influent of WWTP, and this is because bacterial growth is restricted.
Anoxic and anaerobic treatment promote (N from nitrate to nitrogen
2, it is discharged into atmosphere) denitrogenation (denitrification).In the context of the present invention, anoxic be defined as such condition, wherein there is no free oxygen but oxygen exists by being attached in nitrate.Denitrification microorganism also can consume COD but have many kinds with denitrification ability.Therefore, described denitrification microorganism can also use the COD compound of partial hydrolysis.If can obtain the easily compound of degraded, described denitrification rates will improve.
In described system, generally be hydrolyzed, but in all aeration reactors or aeration section, described COD removes microorganism and with oxygen, promptly transforms the compound of easy degraded, and the hydrolysis COD(that can not stay surplus for biological phosphate-eliminating or denitrogenation also claims easy degradation compound).
Because can supply the very small portion of total mud to the effluent reactor, described system high efficiency operation and find can be used as highly concentrated mud and exist up to 60% of in whole WWTP total sludge volume in described effluent reactor, its content that guarantees the COD material are with constant rate of speed but be concentrated and be hydrolyzed in much smaller volume.Therefore in brief, because in less volume, obtained identical utilization ratio, so throughput has obtained optimization.
No matter how many aggregate demands for the oxygen relevant to the COD conversion is, in the effluent reactor, to the proportional amount of COD in this effluent reactor, can be met.Mud can be counted aerobic sludge age (ASA) by the time of aeration in the effluent reactor, it is measured so that enough nitrobacteria numbers to be provided in WWTP.
In optimizing wastewater treatment, there are many challenges.If excessive hydrolysis COD(HCOD is arranged), if the effluent reactor for treatment in described effluent reactor will obtain improved ejecta quality with at least two sections and move.
Therefore, in a specific embodiment of the present invention, the effluent reactor is divided into first paragraph and second segment, wherein said first paragraph is that closed section and described second segment provide aerating apparatus, and wherein said second segment is connected to the outlet of settling tank, and described first paragraph is communicated with the treating pond fluid.This content that will guarantee the COD material under aerobic conditions is degraded, thereby discharges nitrogen.Can carry out this embodiment further distortion so that the nitrate levels in anaerobic treatment minimize.
This can realize in one embodiment, namely, by reducing the oxygen delivery capacity in aerobic section, as by by as described in second segment be divided into several subprovinces, wherein at least one subprovince is moved with aeration intermittently, improve the denitrification ability of anaerobic reaction section (described closed section), this will guarantee that described HCOD is converted and carries out sufficient denitrogenation.Therefore in this preferred embodiment, described second segment is divided into a plurality of subprovinces, and as 2,3 or 4 subprovinces, wherein all subprovinces, except at least one, all provide aerating apparatus.
Another challenge be in the stage of anaerobism phosphorus remove only all extremely low at oxygen and nitrate concentration, preferably close in zero situation, being efficient.
Therefore, in another embodiment of the present invention, the effluent reactor is divided into first paragraph and second segment, wherein said first paragraph is that closed section and described second segment provide aerating apparatus, and wherein said first paragraph is connected to the outlet of settling tank, and described second segment is communicated with the treating pond fluid.Nitrate is discharged to described treating pond and is non-existent during the hydrolysis of anaerobism thus.This scheme NH in charging
3When concentration is higher, be useful especially.
In another embodiment, the effluent reactor is divided into three sections with consecutive order, the second segment that namely is connected in series, first paragraph and the 3rd section, wherein said second and the 3rd section is equipped with aerating apparatus, described first paragraph is the outlet that closed section and wherein said second segment are connected to settling tank, and described the 3rd section be communicated with the treating pond fluid, and wherein said second segment has and accounts for described first paragraph volume 5-15%, more preferably 8-12%, such as about 10% volume.
Be surprised to find that, by in the aeration section, inserting volume less with respect to the anaerobic treatment volume, the hydrolysis rate in the anaerobic treatment of back is significantly improved, and more particularly described hydrolysis rate doubled.
The accompanying drawing explanation
Figure 1A, B and C are the simplified diagram according to biological effluent treatment system of the present invention, and its explanation effluent is processed logistics V
TReturning of different positions.
Fig. 2 is that wherein said settling tank is connected to the first paragraph of effluent reactor in the simplified diagram of the embodiment of the effluent reactor C shown in Figure 1A, B and C.
Fig. 3 is that wherein said settling tank is connected to the second segment of effluent reactor in the simplified diagram of the embodiment of the effluent reactor C shown in Figure 1A, B and C.
Fig. 4 A-B has illustrated different embodiments of the present invention, and the first paragraph of wherein said effluent reactor is parallel with second segment and therefore all with settling tank and/or treating pond fluid, is communicated with.
Embodiment
Below the present invention is described in more detail.All features and details are applicable to each embodiment of described system.
Term " treating pond " refers to groove, container, reactor etc., and wherein organic the and inorganic substance of waste water are degraded in using the bioprocess of microorganism, with from waste water, removing organic compound, nitrogen and phosphorus etc.The described treating pond of described treating pond can comprise different sections, zone as anaerobism, aerobic and/or anoxic, it can be in different order (series connection with parallel) separately, or can be the closed system with aerating apparatus that air is provided where necessary.
Term " effluent reactor " refers to groove, container or reactor, and it randomly is further subdivided into the single section of many series connection, the aerobic and/or anaerobic condition of returning part experience of wherein said settled sludge.Thereby the first returning part that each section can move described settled sludge respectively is at first by the closed section that leads to the aeration section or provide for anaerobic treatment, or with opposite mode.
First, second, and third section of term effluent reactor refers to one in a pond, section or two or three ponds that separate that two or three separate, and it is one another in series or parallel connection.Described pond can be separated by any suitable device, as allow as described in section between the cement wall that is communicated with of fluid, circuit etc.
Described treating pond, settling tank and effluent reactor (and section) are made with the material that is suitable for processing waste water.Such material comprises cement, plastics, metal etc. and is well-known in the art.
Term COD refers to and uses strong oxidizer by the chemical oxygen demand (COD) of oxidable contaminant degradation.Described COD test is relative oxygen-drain effect of measuring Wastewater Pollutant.COD measures by ISO6060:1989 standard (water quality---COD determination).
Term hydrolysis COD or HCOD refer to the measurement of oxidable pollutent.The content of HCOD and amount form by the microbial hydrolytic of COD in aerobic and anaerobic treatment.Described HCOD by will be before active returned sluge process pool and the difference of solvable COD afterwards with the difference of solvable PO4-P before described process pool and afterwards, combine and measure, it uses following the expression:
The solvable COD+2.5* Δ of HCOD=Δ PO4-P
Described COD and PO4-P measure on the filtered sample of using 4 μ m strainers or analogue.
Except as otherwise noted, all per-cent is volume/volume % in specification sheets and claim.
In the context of the present invention, term " aerating apparatus " comprises any be used to supplying air to the device of pond or reactor." aerating apparatus " can comprise simple open system, in pipeline, supplies to the air of closed system, and be like that.
In the context of the present invention, term " closed system " or " section " are a kind of like this system or section, wherein do not have air or oxygen to be fed into described system or section.
With reference now to Figure 1A, B and C,, system of the present invention has been described, wherein untreated waste water or elementary clarified wastewater are according to processed in system of the present invention.
Wastewater feed Q
1Be sent to treating pond A, wherein said wastewater feed Q
1By microorganism, be subject to different biological treatments, as anaerobic treatment, aerobic treatment and anaerobic treatment are to provide the logistics Q that processed
T.
Treating pond A can comprise some independent ponds, and it can be connected or parallel combination separately, and operation independently of one another, that is, the number of carrying out a biological disposal upon in described treating pond, order and type can be different.Therefore, described biological treatment can be only aerobic treatment, namely in having the section of aerating apparatus, perhaps alternatively, as common situation, described biological treatment can be anaerobic treatment (being closed system), is aerobic treatment afterwards or before, it can be in a pond, or in several ponds.
Waste water after processing and the mixture of mud are as the logistics Q after processing
TFrom treating pond A, flow to settling tank B.In settling tank B, sludge settling gets off, so that the waste water that comprises after processing and the two-phase system of settled sludge to be provided.
Only comprise the waste water Q after the processing of a small amount of mud (ejecta)
2Be discharged from, if necessary it may be for further technique.
Described settled sludge Q
3A part from the base section of described settling tank, take out.What can expect is from described settling tank, to take out the logistics more than a mud in such a way, but preferably from a pipeline, because this is safeguarding and is installing than being easier to.This logistics is divided into two returning parts.
The first returning part V of settled sludge
1Be connected to the effluent reactor, and should at it, as effluent, process logistics V by stream
TBefore turning back to described treating pond A, in effluent reactor C, stand further biological treatment.Processing in effluent reactor C preferably includes at least one aerobic treatment and/or anaerobic treatment.
The second returning part V2 of settled sludge returns to treating pond A and through any, does not carry out a biological disposal upon further, and therefore between settling tank B and treating pond A, provides fluid to be communicated with.
At described precipitation logistics Q
3Cut apart before or after under meter, valve and the pump suitably arranged to being controlled described cutting apart.At described two pumps cutting apart downstream, be preferred.
The logistics V that effluent is processed
TWith the second returning part V
2Can be connected to the feed stream of described treating pond A upstream, as the single charging (Figure 1A) of described treating pond, the logistics V that described effluent is processed
TCan be independently to treating pond A charging (Figure 1B), or, two logistics V
TAnd V
2Can before being fed to treating pond A, just mix (Fig. 1 C).
The last optional part Q of described settled sludge
4Be discharged from, if necessary can be for processing further, but modal be to reclaim for the further activated bacterial of inoculation.Therefore described settling tank can comprise fluid and mud ejecta.
Described system also comprises pipeline, liquid running gear, as pump, and valve or other device for the circulation between open and ,Duan He pond, sealed area.These are all as known in the art.
For the biological treatment of controlling described settled sludge the first returning part and the flow of described settled sludge the first and second returning parts, can comprise that in many appropriate locations of described technique sensor and under meter are in order to measure in due course many factors.
The factor of measuring is including, but not limited to the input flow rate Q of the untreated effluent of coming treating pond
1, any (one or more) inner stream flow between the different treatment pond, (one or more) flow from the treating pond to the settling tank, and the flow of settled sludge the first and second returning parts,
The level of liquid in different treatment zone and described settling tank in described (one or more) treating pond, described effluent reactor,
Different treatment zone and mixed liquor suspended solid (MLSS) content in described settling tank in described (one or more) treating pond, described effluent reactor,
The NO in the different treatment zone in described effluent reactor, (one or more) treating pond and settling tank
3 -, oxygen, O
2, COD, BOD, HCOD, total nitrogen and total phosphorus and PO
4The concentration of-P.
The output of measuring is used for by specifically developed software moves described technique for controlling wastewater treatment, for example can be from the EnviStyr of EnviDan A/S acquisition.
With reference now to Fig. 2,, the further distortion of the effluent reactor (C) of Figure 1A, B and C has been described, the V of first part of the settled sludge in effluent reactor C
1Biological treatment at first it is closed section at first paragraph C1() the experience anaerobic treatment, succeeded by the aerobic treatment in having the second segment C2 of aerating apparatus, provide effluent to process logistics V
T.Described anaerobism and aerobic treatment section, C-1 and C-2, can be divided into some independent subprovinces (shown in dotted line).
With reference now to Fig. 3,, the further distortion of the effluent reactor of Figure 1A, B and C has been described, C carries out the biological treatment to settled sludge first part at the effluent reactor, at first in providing the second segment C2 of aerating apparatus, experience aerobic treatment, then in the first paragraph C1 of sealing, carry out anaerobic treatment, so that the logistics V after effluent is processed to be provided
T.Described anaerobism and aerobic section C1 and C2 can be divided into some independently subprovinces (shown in dotted line).The subprovince of each section consists of the subprovince in same pond as shown in the figure, also can consist of the pond that separates.These two kinds of distortion all within the scope of the present invention.
With reference now to Fig. 4 A-B,, one embodiment of the invention have been described, wherein said effluent reactor comprises first and second sections, and first and second sections C1 of described effluent reactor C comprise parallel two sections with C2.
In the embodiment shown in Fig. 4 A, the first returning part V
1Be divided into two portions, provide the first returning part A, V
1AWith the first returning part B V
1B.Described part V
1AAnd V
1BDescribed second and first paragraph carry out respectively aerobic and anaerobic treatment.Therefore, in this embodiment, described first part is processed by effluent with anaerobic treatment by aerobic in second and the first paragraph that are arranged in parallel (C2 and C1), both are connected described settling tank B and described effluent reactor C thereby first and second sections (C1 and C2), and described first and second sections (C1 and C2) is communicated with described treating pond A fluid.When nitrogen content was very high, this embodiment was useful especially.
In the variant of this embodiment, only have an effluent reactor C, it has simultaneously with the second segment C2 of aerating apparatus and the first closed section C1, and between any one in wherein said section and treating pond A, fluid is communicated with, and this is as shown in Figure 4 B.
The further variation of described embodiment and combination be can expect and within the application's scope.The present invention can describe further by following non-limiting example.
Embodiment
One embodiment of the invention are tested by large level.Described system comprises the effluent reactor, the second segment that it has the first closed section and provides aerating apparatus, and wherein said second segment is connected to settling tank B and described first paragraph is communicated with treating pond A fluid.
In charging, the ratio of COD and N is 6.Total sludge quantity is the level that the sludge content of 355.5tDS and effluent reactor (C) is predefined for described device cumulative volume 50%, i.e. 177.8t DS in described device.The composition of described wastewater feed is COD:420mg/l, BOD 180mg/L, N 70mg/l and P 8mg/L
Described technique is moved under cool condition, that is, and and at 10 ° of C.And set described the first returning part and make V
1/ Q
1Be 12.3% (vol/vol), by the software of special configuration, as the EnviStyr that obtains from EnviDan A/S, flow regulated.
Table 1: the mass balance (kg/ days) of measuring component
| Sign/logistics | Q 1 | Q 2 | Q 4 |
| COD | 42000 | 3000 | 19400 |
| N | 7000 | 1500 | 1292 |
[0083]Table 2: flow (m
3/ day)
| Q 1 | 100000 |
| Q 3 | 35000 |
| V 1 | 12240 |
From this embodiment, can see, with the returned sluge (it is processed to activate described mud, for the purification at treating pond waste water) of small portion, obtain effectively nitrogen removal and COD degraded.
Claims (5)
1. the improvement effluent for biological water purification processing waste water reacts the ARP system, described system comprises at least one treating pond (A), it is connected at least one settling tank (B), described settling tank (B) is connected at least one effluent reactor (C), described effluent reactor (C) is connected at least one treating pond (A), and described treating pond (A) further has entrance and described settling tank (B) further has one or more liquid and/or solid outlet, it is characterized in that, between settling bowl (B) and treating pond (A), provide direct interconnected pipeline system.
2. the improvement effluent for biological water purification processing waste water according to claim 1 reacts the ARP system, wherein said effluent reactor (C) is divided into first paragraph (C1) and second segment (C2), wherein first paragraph (C1) is that closed section and described second segment (C2) provide aerating apparatus, and wherein said second segment (C2) is connected to settling tank (B) and described first paragraph (C1) is communicated with described treating pond (A) fluid.
3. the improvement effluent for biological water purification processing waste water according to claim 2 reacts the ARP system, wherein said second segment (C2) is divided into a plurality of subprovinces, as 2,3 or 4 subprovinces, wherein all subprovinces are except at least one, all providing aerating apparatus.
4. the improvement effluent for biological water purification processing waste water according to claim 1 reacts the ARP system, wherein said effluent reactor (C) is divided into first paragraph (C1) and second segment (C2), wherein said first paragraph (C1) is that closed section and described second segment (C2) provide aerating apparatus, and wherein said first paragraph (C1) is connected to settling tank (B) and described second segment (C2) is communicated with treating pond (A) fluid.
5. the improvement effluent for biological water purification processing waste water according to claim 1 reacts the ARP system, wherein said effluent reactor is divided into three sections with consecutive order, the second segment that is connected in series (C2), first paragraph (C1) and the 3rd section (C3), wherein said second and the 3rd section (C2 and C3) provides aerating apparatus, described first paragraph is that closed section and wherein said second segment (C2) are connected to settling tank (B) and described the 3rd section (C3) is communicated with treating pond (A) fluid, and the volume of wherein said second segment (C2) accounts for 5 to 15% of described first paragraph (C1) volume, more preferably 8 to 12, according to appointment 10%.
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| CN2012206235098U CN203295314U (en) | 2012-11-22 | 2012-11-22 | Improved sidestream reaction ARP (acid regeneration of plant) system for purifying waste water through biological water |
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