CN202449915U - Control device for biological treatment process for early landfill leachate - Google Patents

Abstract

The utility model provides a control device for a biological treatment process for early landfill leachate and belongs to the field of performing biological sewage treatment by a biochemical method. According to the device, a water inlet tank is connected with an anaerobic sequencing batch reactor (ASBR) water inlet pipe; an ASBR reactor is connected with the ASBR water inlet pipe, an ASBR water outlet pipe and an exhaust pipe; the ASBR water inlet pipe is connected with an ASBR water inlet pump and an ASBR water inlet valve; the ASBR water outlet pipe is connected with an ASBR water outlet valve; the exhaust pipe is connected with an alkali liquor absorption device, a wet type gas flow meter and a gas collection device; a middle water tank is connected with the ASBR water outlet pipe, a bypass pipe and a pulse sequencing batch reactor (SBR) water inlet pipe; the bypass pipe is connected with an ASBR water inlet pump and a bypass pipe valve; and the pulse SBR water inlet pipe is connected with a pulse SBR water inlet pump and a pulse SBR water inlet pipe valve. By the control device, the stirring time for anaerobic nitration and anoxic denitrification and the aeration time for aerobic nitration can be controlled precisely; and the device has the advantages of saving energy consumption, shortening reaction time, and reducing sludge, along with high total nitrogen (TN) removing rate and the like, and external carbon sources are not required.

Description

A kind of gear of early stage percolate biological treatment

Technical field

The utility model relates to technical field of biological sewage treatment by using, relates in particular to a kind of gear of early stage percolate biological treatment.

Background technology

2009, there were 654 cities in China, and 3.5 hundred million urban populations, the municipal wastes amount of clearing have 1.67 hundred million tons, and the domestic refuse annual average rate of increase is 3%.The variation of waste treatment facility is also very big.The total garbage treatment quantity of China was 1.19 hundred million tons in 09 year, and wherein landfill accounts for 80%, burned 20%, compost 2%.Can find out that therefrom landfill is the main mode of treatment of urban garbage, landfill is fit to China's national situation, be a kind of treatment of urban garbage mode of effective and low expense, but landfill can produce a large amount of percolates.The water quality of percolate is complicated with respect to traditional city domestic sewage, belongs to high concentrated organic wastewater, and national percolate discharge amount of pollution accounts for 1.6 ‰ of year total release, adjusts with chemical oxygen demand and but accounts for 5.27%.If, threaten landfill yard periphery resident's health simultaneously so percolate is dealt with improperly and can be brought serious harm to the landfill yard surrounding enviroment.

Early stage city garbage percolate composition is very complicated, is rich in organism and ammonia nitrogen usually, is rich in poisonous and hazardous heavy metal ion simultaneously, the apparent chocolate that is.With respect to city domestic sewage, the biological treatment of city garbage percolate is a difficult problem all the time.Some research is before thought; Ammonia nitrogen in high density in the city garbage percolate and heavy metal ion can suppress the homergy of mikrobe; Biological denitrificaion generally all need add a large amount of outer carbon sources simultaneously; Increase working cost, but be to use the technology of r-o-can bring the high problem of processing costs equally.

Traditional technology is handled early stage percolate and is had certain denitrogenation and the effect of removing labile organic compound; But the poor controllability of its operational process; And can't realize that not the TN clearance is more than 90% under the additional carbon situation; The cycle of operation of tradition ASBR is tending towards fixing, the long power wastage that causes of churning time, and churning time is too short to cause reaction not exclusively; The operation scheme of tradition SBR also is difficult to reach the degree of depth removal of TN.

The utility model content

The utility model technical problem to be solved provides a kind of gear of early stage percolate biological treatment, and is concrete, and suction sump (1) connects ASBR water inlet pipe (4); ASBR reactor drum (2) connects ASBR water inlet pipe (4), ASBR rising pipe (6) and vapor pipe (11); ASBR water inlet pipe (4) connects ASBR intake pump (3) and ASBR inlet valve (5); ASBR rising pipe (6) connects ASBR flowing water Valve (8); Vapor pipe (11) connects alkali lye absorption unit (12), wet test meter (13) and gas collector (14); Intermediate water tank (15) connects ASBR rising pipe (6), common pipe (16) and pulse SBR water inlet pipe (20); Common pipe (16) connects ASBR intake pump (3) and common pipe valve (17); Pulse SBR water inlet pipe (20) connects pulse SBR intake pump (19) and pulse SBR water inlet pipe valve (21); Pulse SBR (18) connects pulse SBR water inlet pipe (20), aeration tube (26) and pulse SBR rising pipe (29); Aeration tube (26) connects air (25) and aeration head (27); Pulse SBR rising pipe (29) connects pulse SBR rising pipe valve (28);

ASBR reactor drum (2) inside is provided with whisking appliance _ASBR(7) and the pH transmitter _ASBR(10); Pulse SBR (18) inside is provided with whisking appliance _SBR(30), pH transmitter _SBR(24), DO transmitter _SBR(22) and the ORP transmitter _SBR(23); The pH transmitter _ASBR(10), pH transmitter _SBR(24), DO transmitter _SBR(22), ORP transmitter _SBR(23) through data line respectively with the pH determinator _ASBR(9), pH determinator _SBR(31), DO determinator _SBR(32), ORP determinator _SBR(33) connecting the back is connected with the data signal input interface (36～39) of computingmachine (34); Computingmachine (34) is connected the ASBR intake pump rly. (42) of process controller, ASBR water inlet pipe valve relay (43), whisking appliance through the data signal output interface with process controller (40) _ASBRRly. (44), ASBR rising pipe valve relay (45), common pipe valve relay (46), pulse SBR intake pump rly. (47), pulse SBR water inlet pipe valve relay (48), air rly. (49), pulse SBR rising pipe valve relay (50), whisking appliance _SBRRly. (51) respectively with ASBR intake pump (3), ASBR water inlet pipe valve (5), whisking appliance _ASBR(7), ASBR rising pipe valve (8), common pipe valve (17), pulse SBR intake pump (19), pulse SBR water inlet pipe valve (21), air (25), pulse SBR rising pipe valve (28), whisking appliance _SBR(30) connect.

To sum up; The gear of a kind of early stage percolate biological treatment that the utility model provides; Can be object with the actual cities percolate; ASBR is to have little, high, easy, the low power consumption and other advantages of operation of loading of sludge yield handling early stage percolate, and ASBR can transform into easily biodegradable organics with difficult degradation larger molecular organics in the percolate simultaneously, helps the organic degree of depth to remove.Pulse SBR significant feature is an advanced nitrogen, has made full use of former water carbon source and sludge internal carbon source, cost saving at pulse water-feeding with controlling under aeration and the condition of stirring in real time; The ASBR anaerobic digestion process is controlled through online pH sensor in real time, accurately judges terminal point, prevents that excessive agitation from causing energy dissipation; Pulse SBR aerobic nitrification and anoxic denitrification process are accurately judged each elementary reaction terminal point through online DO, pH and the control of ORP value sensor in real time, save the reaction times and the energy.

Description of drawings

Fig. 1 is the structural representation of gear of a kind of early stage percolate biological treatment of the utility model;

Fig. 2 is the schematic flow sheet of A1 ~ A4 in the control method of a kind of early stage percolate biological treatment of the utility model;

Fig. 3 is the schematic flow sheet of B1 ~ B9 in the control method of a kind of early stage percolate biological treatment of the utility model;

Fig. 4 is a typical pH Changing Pattern synoptic diagram in the ASBR operational process in the utility model embodiment;

Fig. 5 is typical pH, an ORP Changing Pattern synoptic diagram in the pulse SBR operational process in the utility model embodiment;

Fig. 6 is the operation operation synoptic diagram of pulse SBR in the utility model embodiment.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is done further detailed explanation.

With reference to Fig. 1, show the structural representation of the gear of the described a kind of early stage percolate biological treatment of the utility model, wherein, suction sump (1) connects ASBR water inlet pipe (4); ASBR reactor drum (2) connects ASBR water inlet pipe (4), ASBR rising pipe (6), vapor pipe (11); ASBR water inlet pipe (4) connects ASBR intake pump (3), ASBR inlet valve (5); ASBR rising pipe (6) connects ASBR flowing water Valve (8); Vapor pipe (11) connects alkali lye absorption unit (12), wet test meter (13), gas collector (14); Intermediate water tank (15) connects ASBR rising pipe (6), common pipe (16), pulse SBR water inlet pipe (20); Common pipe (16) connects ASBR intake pump (3), common pipe valve (17); Pulse SBR water inlet pipe (20) connects pulse SBR intake pump (19), pulse SBR water inlet pipe valve (21); Pulse SBR (18) connects pulse SBR water inlet pipe (20), aeration tube (26), pulse SBR rising pipe (29); Aeration tube (26) connects air (25), aeration head (27); Pulse SBR rising pipe (29) connects pulse SBR rising pipe valve (28);

ASBR (2) inside is provided with whisking appliance _ASBR(7), pH transmitter _ASBR(10); Pulse SBR inside is provided with whisking appliance _SBR(30), pH transmitter _SBR(24), DO transmitter _SBR(22), ORP transmitter _SBR(23);

The pH transmitter _ASBR(10), pH transmitter _SBR(24), DO transmitter _SBR(22), ORP transmitter _SBR(23) through data line respectively at the pH determinator _ASBR(9), pH determinator _SBR(31), DO determinator _SBR(32), ORP determinator _SBR(33) connecting the back is connected with the data signal input interface (36～39) of computingmachine (34); Computingmachine (34) is connected the ASBR intake pump rly. (42) of process controller, ASBR water inlet pipe valve relay (43), whisking appliance through the data signal output interface with process controller (40) _ASBRRly. (44), ASBR rising pipe valve relay (45), common pipe valve relay (46), pulse SBR intake pump rly. (47), pulse SBR water inlet pipe valve relay (48), air rly. (49), pulse SBR rising pipe valve relay (50), whisking appliance _SBRRly. (51) respectively with ASBR intake pump (3), ASBR water inlet pipe valve (5), whisking appliance _ASBR(7), ASBR rising pipe valve (8), common pipe valve (17), pulse SBR intake pump (19), pulse SBR water inlet pipe valve (21), air (25), pulse SBR rising pipe valve (28), whisking appliance _SBR(30) connect.

With reference to shown in Figure 2 be the schematic flow sheet of A1 ~ A4 in a kind of control method of early stage percolate biological treatment, specifically comprise:

A1 according to the flooding quantity of ASBR reactor drum, confirms flooding time; And in computingmachine, set flooding time, carry out timing by the time controller in the real-time control system, after system starts; ASBR intake pump and ASBR water inlet pipe valve are opened automatically, former water are injected the ASBR reactor drum, after reaching setting-up time; ASBR intake pump and ASBR water inlet pipe valve are closed water inlet end automatically;

A2, behind the water inlet end, whisking appliance _ASBRAutomatically open, the ASBR reactor drum gets into anaerobic digestion process in whipping process, and the anaerobic digestion process is by online pH transmitter _SBRMonitor, and in real time the data information transfer that is obtained is arrived computingmachine through data collecting card, after process controller obtains characterizing the signal of anaerobic digestion completion, whisking appliance _ASBRAutomatically close;

The condition that above-mentioned sign anaerobic digestion is accomplished be pH (t+1h) smaller or equal to pH (t), and churning time t is greater than 12h.

A3 sets the ST in computingmachine, carry out timing through the time controller in the real-time control system; After reaching predetermined ST; According to the water discharge time of setting in the computingmachine, carry out timing through the time controller in the real-time control system, system opens ASBR rising pipe valve automatically; Water after the processing gets into intermediate water tank through the ASBR rising pipe, and ASBR rising pipe valve is closed automatically behind the water discharge time of the setting that reaches;

A4, draining according to the idle mixing time of setting in the computingmachine, is carried out timing through the time controller in the real-time control system after finishing, and system gets into the A1 of next cycle automatically after the idle mixing time that reaches setting;

Schematic flow sheet referring to B1 ~ B9 in the control method of a kind of early stage percolate biological treatment of Fig. 3 specifically comprises:

B1 regulates percolate COD/NH in the intermediate water tank ₄ ⁺-N, the former percolate flooding quantity of setting intermediate water tank is set former percolate flooding time in computingmachine; Carry out timing through the time controller in the real-time control system, ASBR water inlet pipe valve is closed automatically, and the common pipe valve is opened automatically; The ASBR intake pump is opened automatically, and former water injects intermediate water tank through common pipe, reach the flooding time of setting after the common pipe valve close automatically; The ASBR intake pump is closed automatically, at this moment the COD/NH of percolate in the intermediate water tank ₄ ⁺-N is 3 ~ 4;

B2, the water intake mode of pulse SBR are three equivalent water inlets, according to its flooding quantity; Confirm the pulse water-feeding time, and in computingmachine, set each flooding time, carry out timing through the time controller in the real-time control system; After system started, pulse SBR intake pump was opened automatically, and pulse SBR water inlet pipe valve is opened automatically; Percolate in the intermediate water tank gets into pulse SBR through pulse SBR water inlet pipe; Automatically close when reaching setting-up time afterpulse SBR intake pump, pulse SBR water inlet pipe valve is closed water inlet end automatically;

B3, whisking appliance _SBRAutomatically open, the organism of pulse SBR in the agitation phases utilization is intake for the first time will residual NO of the cycle of going up _x ^--N is reduced to N ₂, churning time is 30min in the setting computer, carries out timing through the time controller in the real-time control system, whisking appliance after reaching churning time _SBRAutomatically close;

B4, air is opened automatically, and air diffuses among the pulse SBR through aeration tube and aeration head, gets into the aerobic nitrification stage, the pH transmitter _SBR, the DO transmitter _SBR, the ORP transmitter _SBRMonitor pH value, dissolved oxygen concentration DO and redox potential ORP in the water respectively, through the pH determinator _SBR, the DO determinator _SBR, the ORP determinator _SBRData are input in the middle of the computingmachine through data collecting card, and data are as the real-time controlled variable of aeration aerobic nitrification; With numerary signal input process unit,, draw the process real-time controlled variable through filtering process and calculating; And through control strategy the real time control variables that draws is compared, when satisfying the aerobic nitrification termination condition, finish the aerobic nitrification process; Air cuts out automatically, and aeration stops, and the default pulse number is 3; When not reaching pulse number, carry out B5; When reaching pulse number, carry out B6;

When controlled variable satisfies any in following three conditions; Aerobic nitrification finishes: 1. the pH first order derivative is just being become by negative; And aeration time t greater than 1.5h 2. the ORP first order derivative less than 0.4mv/min, and aeration time t 3. DO is greater than 4mg/L greater than 2h, and aeration time t is greater than 2h;

B5; Flooding time with intake for the first time identically, pulse SBR intake pump is opened automatically, pulse SBR water inlet pipe valve is opened automatically; Percolate in the intermediate water tank gets into pulse SBR through pulse SBR water inlet pipe; Automatically close when the time afterpulse SBR intake pump that reaches setting, pulse SBR water inlet pipe valve is closed whisking appliance automatically _SBRAutomatically open, pulse SBR gets into the anoxic denitrification stage in the whipping process, and the denitrification process has online ORP, the monitoring of pH transmitter, and through the pH determinator _SBR, the ORP determinator _SBRData are input in the computingmachine through data collecting card, and the data after the processing are as the real-time controlled variable of anoxic denitrification; Anoxic denitrification is played the purpose of real-time control, after process controller obtains characterizing the signal that first anoxic denitrification finishes, whisking appliance _SBRAutomatically close, and return B4;

The condition that above-mentioned sign first anoxic denitrification finishes is any in two conditions; 1. the pH first order derivative is by just becoming negative; And 2. the first order derivative of ORP is by sporting greater than-25mv/min less than-30mv/min greater than 0.5h for churning time t, and churning time t is greater than 0.5h.

B6, whisking appliance _SBRAutomatically open, pulse SBR gets into the endogenous denitrification stage, denitrification process ORP, the monitoring of pH on-line sensor, and through the pH determinator _SBR, the ORP determinator _SBRData are input in the middle of the computingmachine through data collecting card, and the data after the processing are as the real-time controlled variable of endogenous denitrification; Endogenous denitrification is played the purpose of real-time control, after process controller obtains characterizing the signal that second anoxic denitrification finishes, whisking appliance _SBRAutomatically close;

The condition that above-mentioned sign second anoxic denitrification finishes is any in two conditions; 1. the pH first order derivative is by just becoming negative; And 2. the first order derivative of ORP is by sporting greater than-5mv/min less than-30mv/min greater than 4h for churning time t, and churning time t is greater than 4h;

B7 sets the ST in computingmachine, carry out timing through the time controller in the real-time control system and accomplish up to deposition;

B8; In computingmachine, set water discharge time; Carry out timing through the time controller in the real-time control system; The automatic unbalanced pulse SBR of system rising pipe valve, the water after the processing is outside pulse SBR rising pipe is discharged reactor drum, and the water discharge time afterpulse SBR rising pipe valve that reaches setting is closed automatically;

B9 after draining finishes, according to the idle mixing time of the total setting of computingmachine, carries out timing through the time controller in the real-time control system, and system gets into the B1 of next cycle automatically after reaching predetermined idle mixing time.

Below in conjunction with concrete instance the scheme described in the utility model is done further to introduce: the actual percolate with certain refuse landfill is a research object, and experimental result shows: the continuous operation through 79 days has obtained stable use characteristics:

Parameter setting: ASBR: the I flooding time is 10min, and the III ST is 1h, and the IV water discharge time is 10min, and V idle mixing time is 1h; The II churning time is monitored through online pH sensor in real time, and the pH Changing Pattern specifically can be referring to Fig. 4, and after process controller obtained characterizing the signal of anaerobic digestion completion, stirring stopped;

Pulse SBR: I is regulated percolate COD/NH in the intermediate water tank (15) ₄ ⁺The former percolate flooding time of-N is 1～2min, and each flooding time of II water inlet is 3min, and the III churning time is 30min, and the VII ST is 1h, and the VIII water discharge time is 10min, and IX idle mixing time is 1h, and the IV aeration time is through online pH transmitter _SBR, the DO transmitter _SBR, the ORP transmitter _SBRMonitoring in real time, treat that process controller obtains characterizing the signal that aerobic nitrification finishes after, aeration stops, V adds intermediate water tank percolate churning time by online pH determinator _SBR, the ORP determinator _SBRMonitoring in real time, treat that process controller obtains characterizing the signal that anoxic denitrification finishes after, stirring stops, the VI endogenous denitrification time is by online pH determinator _SBR, the ORP determinator _SBRMonitoring in real time, treat that process controller obtains characterizing the signal that endogenous denitrification finishes after, stirring stops, and is concrete, in the pulse SBR operational process typical pH, ORP Changing Pattern synoptic diagram referring to Fig. 5, the operation operation synoptic diagram of the pulse SBR that Fig. 6 provides.

The ASBR performance: ASBR draining ratio is 0.5; Operating temperature is 35 ℃, MLVSS:8000 ± 500mg/L, sludge age (SRT) endless; At water inlet COD during at 6500 ± 1000mg/L; Water outlet COD remains on 1100 ± 100mg/L, and clearance is 80 ± 5%, and the ASBR operating load is 3.25 ± 0.5kgCOD/m ³D, it is 2.7 ± 0.5kgCOD/m that COD removes load ³D.The TN of water inlet is 700 ± 300mg/L, and water outlet TN changes little.

The SBR performance: the SBR cycle of operation is fixing (less than 24 hours) not, and the draining ratio is 0.3, and operating temperature is 27 ℃; MLVSS:7000 ± 500mg/L; Under 1800～3500mg/L situation, water outlet COD is at 430～890mg/L at water inlet COD, and clearance is 65～83%; TN is under 433～1004mg/L situation in water inlet, and water outlet TN is at 4.3～34.6mg/L, and clearance is 92～98%.

The performance of system: system water inlet COD is at 6500 ± 1000mg/L, and water outlet COD is at 430～890mg/L, clearance 81～97%; The TN of water inlet is 700 ± 300mg/L; Water outlet TN is at 4.3～34.6mg/L; Clearance has realized that 96～99% the degree of depth of total nitrogen is removed outside not adding under the situation of carbon source, the water outlet total nitrogen reaches household refuse landfill sites and pollutes control criterion (GB16889-2008) " the TN emission standard.

Further, the know-why of the utility model is specially:

The technology of organism and total nitrogen constitutes control principle in ASBR and the early stage percolate of pulse SBR combined removal, pH variation tendency appearance variation in the anaerobic digestion process in the ASBR reactor drum; The process that corresponding change point comes Indicator Reaction can appear in aerobic nitrification and anoxic denitrification process pH, DO, ORP in the pulse sbr reactor device, and concrete principle is following:

When former percolate gets into the ASBR reactor drum, start whisking appliance _ASBR, anaerobism is removed the organism in the former percolate, and anaerobism is removed organism mainly through 3 processes: acidication-product hydrogen produces acetate-product methane; It is voltaile fatty acid (VFA) that organism in the acidication stage percolate is hydrolyzed acidifying, and the basicity reaction in produced simultaneously VFA and the percolate produces CO ₂, CO ₂Dividing potential drop increases, H in the percolate ₂CO ₃Content increases, and pH in the reactor drum descends, but this stage generally finish beginning to react in the 3h of back, product methane phase methanogen process then can produce bicarbonate alkalinity; PH is gone up, after the COD degraded is accomplished, can produce the effect of similar sludge fermentation in the reactor drum; Impel pH to go up to stop even descending, as shown in Figure 4, according to above Changing Pattern; We can more accurately control the terminal point of anaerobic digestion, stop to stir, and save the energy.

When the air of pulse SBR is opened automatically, begin aeration, the organism in the aerobic removal percolate is then with the NH in the percolate ₄ ⁺-N is oxidized to NO _x ^--N promptly carries out nitration reaction.Active sludge in the reactor drum utilizes organism and the NH in the dioxygen oxidation percolate that air blasts ₄ ⁺-N, organism at first by aerobic heterotrophic bacterium degraded, then work as NH ₄ ⁺-N by the nitrobacteria complete oxidation after, the dissolved oxygen in the percolate will can not utilized by Institute of Micro-biology, so phenomenon can appear rising in DO, the NO in the percolate _x ^--N can not increase yet again.Nitration reaction is a reaction of producing acid, can in percolate in basicity cause pH to descend, when nitration reaction finishes, produce acid and stop, at this moment CO ₂By a large amount of strippings, the pH value becomes rising by decline, unique point 1 occurs, and is as shown in Figure 5.Adopt real-time control accurately to control aeration time, avoid excessive aeration and waste energy.

Add the intermediate water tank percolate and stir the COD/NH of intermediate water tank percolate ₄ ⁺-N satisfies denitrifying demand about 4.Denitrifying bacterium utilizes organism to be electron donor, NO in the denitrification process _x ^--N is an electron acceptor(EA), with NO _x ^--N is reduced to N ₂, be that the oxidation state material in the pulse sbr reactor device constantly reduces, thus the constantly decline of ORP value, after denitrification finished, pulse SBR was in anaerobic state, and the ORP fall off rate is accelerated, and unique point 2 occurs, and is as shown in Figure 5.Denitrification process can constantly produce basicity, and pH constantly rises, and puts back after the nitrated end, and pulse SBR gets into the anaerobic fermentation acid phase, becomes decline so the pH value has to rise, and unique point 3 occurs, and is as shown in Figure 5.Can accurately judge the process of anti-nitration reaction according to above unique point, when denitrification finishes, stop to stir, save the energy dissipation that excessive agitation causes.

The advantage that the scheme of the utility model is embodied in practical application comprises: adopt the mode of ASBR associating pulse SBR to handle early stage percolate, SBR is desirable plug flow reactor, and the reaction impellent is bigger, prevents sludge bulking simultaneously, and anti impulsion load is high.Pulse SBR adopts the equivalent water inlet to combine control in real time to stir the operation scheme of aeration, and the carbon source in the equivalent water inlet for the first time is used for residual NO of cycle _X ^--N denitrification; Carbon source in the equivalent water inlet for the second time is as the NO of nitrated generation in the equivalent water inlet first time _X ^--N denitrification; Carbon source in the equivalent water inlet for the third time is as the NO of nitrated generation in the equivalent water inlet second time _X ^--N denitrification so pulse SBR has utilized in the water inlet 2/3 carbon source to carry out denitrification denitrogenation at least, has significantly increased the utilising efficiency to carbon source in the former water.

Pulse SBR adopts the equivalent water inlet to combine control in real time to stir the operation scheme of aeration, at first carries out anoxic denitrification after the water inlet for the second time with for the third time, NO in removing sewage _X ^-Produced basicity in the time of-N, laid a good foundation, avoided adding necessity of basicity for aerobic nitrification subsequently.Pulse SBR operation keeps higher sludge concentration always, because the NO that produces after the aerobic nitrification of equivalent water inlet for the third time _X ^--N has not had the carbon source in the available former percolate, and this moment, higher sludge concentration was the NO that produces after the aerobic nitrification of equivalent water inlet for the third time _X ^--N provides competent mikrobe internal carbon source, and the utilization of internal carbon source has solved the problem of additional carbon fully, has saved a large amount of running costs.

After the pulse SBR equivalent water inlet for the first time; Owing to behind the anoxia stirring denitrification in the water inlet organism more than needed arranged certainly; So what and then aerobic aeration at first carried out is that aerobic heterotrophic bacterium is removed the organic stage certainly; Because the aerobic heterotrophic bacterium generation cycle is shorter, so sludge concentration has increase to a certain degree certainly; After the equivalent water inlet for the third time, utilize internal carbon source to carry out denitrification at last and be certain to cause bacterium self hydrolysis and produce available carbon source, the effect of certain mud decrement is arranged,, reduce the outer discharge capacity of mud so sludge concentration can keep a stable state relatively.Pulse SBR equivalent is divided three water inlets, all can be through aerobic nitrification the NH in the water after the equivalent water inlet each time ₄ ⁺-N is oxidized to NO _X ^--W calculates than 0.3 by draining, so the maximum NH in the sbr reactor device ₄ ⁺-N concentration only is the NH of once intaking ₄ ⁺5/12 of-N concentration, this has reduced free ammonia (FA) significantly to the bacteriostatic possibility of nitration denitrification.

The ASBR anaerobic digestion process is controlled through online pH sensor in real time, accurately judges terminal point, has avoided under the traditional fixed cycle ASBR running status, and COD removes not exclusively and excessive agitation causes the phenomenon of energy dissipation.Pulse SBR aerobic nitrification and anoxic denitrification process are accurately judged each elementary reaction terminal point through online DO, pH and the control of ORP value sensor in real time, save the reaction times and the energy.Whole technology is accomplished by the process real-time system, and it is convenient to have a bookkeeping, and expense is low, anti impulsion load and be difficult for freeing sludge bulking.

The described scheme of the utility model can be widely used in city garbage percolate biological treatment, coking chemical waste water biological treatment and pharmacy waste water biological treatment or the like.

More than the gear of a kind of early stage percolate biological treatment that the utility model provided has been carried out detailed introduction; Used concrete example among this paper the principle and the embodiment of the utility model are set forth, the explanation of above embodiment just is used to help to understand the method and the core concept thereof of the utility model; Simultaneously, for one of ordinary skill in the art, according to the thought of the utility model, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as the restriction to the utility model.

Claims (1)

1. the gear of an early stage percolate biological treatment is characterized in that: suction sump (1) connection ASBR water inlet pipe (4); ASBR reactor drum (2) connects ASBR water inlet pipe (4), ASBR rising pipe (6) and vapor pipe (11); ASBR water inlet pipe (4) connects ASBR intake pump (3) and ASBR inlet valve (5); ASBR rising pipe (6) connects ASBR flowing water Valve (8); Vapor pipe (11) connects alkali lye absorption unit (12), wet test meter (13) and gas collector (14); Intermediate water tank (15) connects ASBR rising pipe (6), common pipe (16) and pulse SBR water inlet pipe (20); Common pipe (16) connects ASBR intake pump (3) and common pipe valve (17); Pulse SBR water inlet pipe (20) connects pulse SBR intake pump (19) and pulse SBR water inlet pipe valve (21); Pulse SBR (18) connects pulse SBR water inlet pipe (20), aeration tube (26) and pulse SBR rising pipe (29); Aeration tube (26) connects air (25) and aeration head (27); Pulse SBR rising pipe (29) connects pulse SBR rising pipe valve (28);

ASBR reactor drum (2) inside is provided with whisking appliance _ASBR(7) and the pH transmitter _ASBR(10); Pulse SBR (18) inside is provided with whisking appliance _SBR(30), pH transmitter _SBR(24), DO transmitter _SBR(22) and the ORP transmitter _SBR(23); The pH transmitter _ASBR(10), pH transmitter _SBR(24), DO transmitter _SBR(22), ORP transmitter _SBR(23) through data line respectively with the pH determinator _ASBR(9), pH determinator _SBR(31), DO determinator _SBR(32), ORP determinator _SBR(33) connecting the back is connected with the data signal input interface (36～39) of computingmachine (34); Computingmachine (34) is connected the ASBR intake pump rly. (42) of process controller, ASBR water inlet pipe valve relay (43), whisking appliance through the data signal output interface with process controller (40) _ASBRRly. (44), ASBR rising pipe valve relay (45), common pipe valve relay (46), pulse SBR intake pump rly. (47), pulse SBR water inlet pipe valve relay (48), air rly. (49), pulse SBR rising pipe valve relay (50), whisking appliance _SBRRly. (51) respectively with ASBR intake pump (3), ASBR water inlet pipe valve (5), whisking appliance _ASBR(7), ASBR rising pipe valve (8), common pipe valve (17), pulse SBR intake pump (19), pulse SBR water inlet pipe valve (21), air (25), pulse SBR rising pipe valve (28), whisking appliance _SBR(30) connect.

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