CN105060654A - Denitrification system for high-salinity low-carbon-nitrogen-ratio chemical wastewater and treatment method of wastewater - Google Patents
Denitrification system for high-salinity low-carbon-nitrogen-ratio chemical wastewater and treatment method of wastewater Download PDFInfo
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Abstract
The invention discloses a denitrification system for high-salinity low-carbon-nitrogen-ratio chemical wastewater and a treatment method of the wastewater. The denitrification system (20) for the high-salinity low-carbon-nitrogen-ratio chemical wastewater comprises a UC module unit (17), a flotation tank (3), an HBF module unit (18), a standby system unit (19) and a discharge system (20). The UC module unit (17), the flotation tank (3), the HBF module unit (18), the standby system unit (19) and the discharge system (20) are sequentially connected. The UC module unit (17), the HBF module unit (18) and the standby system unit (19) are connected with a mud concentration unit (16). The denitrification system is simple in structure and technological process, flexible and uniform in water distribution, is provided with a good microorganism and sewage reaction system, is more efficient in treatment effect, reduces investment and is high in automation degree.
Description
Technical field
The present invention designs environment protection sewage process field, particularly a kind of denitrification system of high salinity low ratio of carbon to ammonium wastewater from chemical industry and treatment process thereof.
Background technology
In high salinity situation, the wastewater from chemical industry of low ratio of carbon to ammonium belongs to unmanageable trade effluent, and a large amount of ammonia nitrogen waste water enters water body and not only causes body eutrophication, even to crowd and biologically produce toxic action.In most cases C/N is lower, brings difficulty to the harmless treatment of ammonia nitrogen.Traditional biological denitrogenation method serves certain effect in denitrogenation of waste water, but still there is many problems.Nitratedly need consume a large amount of oxygen as completely in: ammonia nitrogen, add power consumption; To C/N than low waste water, need additional organic carbon source; Technical process is long, and floor space is large, and initial cost is high.
Summary of the invention
Object of the present invention is exactly the defect in order to make up prior art, the denitrification system of the high salinity low ratio of carbon to ammonium wastewater from chemical industry providing a kind for the treatment of effect good.
For solving the problems of the technologies described above, the invention provides a kind of denitrification system of high salinity low ratio of carbon to ammonium wastewater from chemical industry, the denitrification system of described high salinity low ratio of carbon to ammonium wastewater from chemical industry comprises UC modular unit, air flotation pool, HBF modular unit, redundant system unit and blowdown system, and described UC modular unit, air flotation pool, HBF modular unit, redundant system unit are connected successively with blowdown system; Described UC modular unit, HBF modular unit are connected with sludge condensation unit respectively with redundant system unit.
Further, described UC modular unit comprises the point-to-point water distributor and upflow hydrolysis acidification pool that are connected successively; Described point-to-point water distributor is connected with air flotation pool respectively with upflow hydrolysis acidification pool; Described HBF modular unit comprises sump pump, preposition anoxic pond, Aerobic Pond, rearmounted anoxic pond and sequence batch (settling tank, and described preposition anoxic pond, Aerobic Pond, rearmounted anoxic pond are connected successively with sequence batch (settling tank; Described redundant system unit comprises the intermediate pool, strainer and the clean water basin that are connected successively, and described sludge condensation unit comprises the concentration basin and water extracter that are connected successively; Described blowdown system comprises dewatered sludge outward transport mouth and water outlet up to standard; Described sludge condensation unit and dewatered sludge are transported outward mouth and are connected; Described redundant system unit is connected with water outlet up to standard.
Further, described upflow hydrolysis acidification pool is provided with 36 water distribution flexible pipes, and described point-to-point water distributor is connected by bottom water distribution flexible pipe and upflow hydrolysis acidification pool; Described upflow hydrolysis acidification pool is disposed with Sludge Bed reaction zone, condenses precipitin reaction district and settling section from bottom to top.
Further, dissolved oxygen meter is provided with in described Aerobic Pond; Described sequence batch (settling tank comprises the first sequence batch (settling tank and the second sequence batch (settling tank; Described first sequence batch (settling tank is connected with rearmounted anoxic pond respectively by sump pump with the second sequence batch (settling tank.
Further, be respectively arranged with enzyme in described Aerobic Pond, the first sequence batch (settling tank and the second sequence batch (settling tank and float filler and aerating apparatus; Described aerating apparatus comprises jet aerator and jet-loop pump, and described jet aerator is connected with jet-loop pump.
Further, described strainer is quartz filter.
Further, described concentration basin is gravity concentration tank or air flotation pool; Described water extracter is sheet frame water extracter or belt type dewaterer.
Present invention also offers a kind for the treatment of process of denitrification system of high salinity low ratio of carbon to ammonium wastewater from chemical industry, comprise the following steps:
Step I and II bio-chemical effluent, after gravity concentration, enters UC modular unit, and sewage is introduced into point-to-point water distributor, and enters the bottom of upflow hydrolysis acidification pool by water distribution flexible pipe, and reacted sewage enters air flotation pool by effluent weir;
Step 2, the water outlet of described UC modular unit are through air flotation pool, and described point-to-point water distributor is connected with air flotation pool respectively with upflow hydrolysis acidification pool; Anaerobic sludge not completely isolated in the water outlet of UC modular unit is flow in upflow hydrolysis acidification pool again;
Water outlet in step 3, described air flotation pool flows into the preposition anoxic pond in HBF modular unit, nitrification liquid reflux pump is arranged between Aerobic Pond and anoxic pond, the input terminus of described nitrification liquid reflux pump is connected with Aerobic Pond, and described nitrification liquid backflow delivery side of pump is connected with anoxic pond; The liquid of nitrification liquid reflux pump backflow conveying is uniformly mixed in preposition anoxic pond, and adding nitric nitrogen wherein carries out anti-nitration reaction simultaneously;
The water outlet of described preposition anoxic pond flows into Aerobic Pond, and wherein most of chemical oxygen demand COD is biodegradable, and is provided with active sludge, enzyme floats filler and microbial film in described Aerobic Pond, and described microbial film is arranged on active sludge and enzyme floats filler top;
The water outlet of described Aerobic Pond flows into rearmounted anoxic pond again, wherein waste water not by the further denitrification of complete denitrification; Sewage alternately enters described first sequence batch (settling tank and the second sequence batch (settling tank, and the residue sewage backflow partial sludge in batch settling tank is to preposition anoxic pond;
The water outlet of step 4, described HBF modular unit flows into the intermediate pool in redundant system unit, and strainer water outlet kept in by clean water basin, and clean water basin provide backwashing water for strainer, and all the other water are discharged by water outlet up to standard;
Step 5, flow through the excess sludge of described UC modular unit, HBF modular unit and redundant system unit, flow into sludge condensation unit, after concentrated by concentration basin, enter water extracter, after dehydration, discharge mud through dewatered sludge outward transport mouth.
Further, in step one, upflow hydrolysis acidification pool is disposed with Sludge Bed reaction zone, condenses precipitin reaction district and settling section from bottom to top; Described mud reacts in Sludge Bed reaction zone, and then sewage slowly rises, and successively through condensing precipitin reaction district and settling section, final sewage enters air flotation pool by effluent weir.
Further, in step 4, intermediate pool top is provided with overflow weir, during HBF modular unit 18 stable effluent quality, without the need to strainer, waste water by overflow weir overflow to clean water basin.
Beneficial effect of the present invention:
System and method of the present invention, flow process is simple, and flexibly, even water distribution, has good microorganism, sewage reaction system, and treatment effect is more efficient, and reduced investment, and level of automation is high.
Advantage of the present invention:
(1) high salinity waste water is applicable to: after debugging in whole system, active sludge in biophase and microbial film can adapt to containing highly-saline trade effluent, NaCl content can reach 10000mg/L to 12000mg/L, and Na2SO4 content can reach 8000mg/L to 10000mg/L.
(2) be applicable to low C/N than waste water: in system, increase UC module reactor, effectively can improve the biodegradability of system, and HBF module reactor can strengthen denitrification effect.Therefore, conventional denitrification system only just can to NH at C/N>=4:1
3-N has good removal effect; Native system technique, for 4:1>=C/N>=2:1, also has splendid effect.When system BOD concentration is about 130mg/L, water outlet NH
3-N concentration is less than 10mg/L.
Accompanying drawing explanation
Fig. 1 is the process flow sheet of one embodiment of the invention;
Fig. 2 is UC modular unit figure of the present invention;
Fig. 3 is HBF modular unit figure of the present invention;
Wherein, 1 point-to-point water distributor, 2 upflow hydrolysis acidification pools, 3 air flotation pools, 4 preposition anoxic pond, 5 Aerobic Ponds, 6 rearmounted anoxic pond, 7 first sequence batch (settling tanks, 8 second sequence batch (settling tanks, 9 intermediate pool, 10 strainers, 11 clean water basin, 12 water outlets up to standard, 13 concentration basins, 14 water extracters, 15 dewatered sludge outward transport mouth, 16 sludge condensation unit, 17UC modular unit, 18HBF modular unit, 19 redundant system unit, 20 blowdown systems.
Embodiment
Further illustrate the present invention by the following examples.It should be understood that these embodiments are explaination of the present invention and citing, do not limit the scope of the invention in any form.
Embodiment 1
As shown in Figure 1 to Figure 3, the invention provides a kind of denitrification system of high salinity low ratio of carbon to ammonium wastewater from chemical industry.The denitrification system of described high salinity low ratio of carbon to ammonium wastewater from chemical industry comprises UC modular unit 17, air flotation pool 3, HBF modular unit 18, redundant system unit 19 and blowdown system 20, and described UC modular unit 17, air flotation pool 3, HBF modular unit 18, redundant system unit 19 are connected successively with blowdown system 20; Described UC modular unit 17, HBF modular unit 18 are connected with sludge condensation unit 16 respectively with redundant system unit 19.
Described UC modular unit 17 comprises the point-to-point water distributor 1 and upflow hydrolysis acidification pool 2 that are connected successively; Described point-to-point water distributor 1 is connected with air flotation pool 3 respectively with upflow hydrolysis acidification pool 2; Described HBF modular unit 18 comprises sump pump, preposition anoxic pond 4, Aerobic Pond 5, rearmounted anoxic pond 6 and sequence batch (settling tank, and described preposition anoxic pond 4, Aerobic Pond 5, rearmounted anoxic pond 6 are connected successively with sequence batch (settling tank; Described redundant system unit 19 comprises the intermediate pool 9, strainer 10 and the clean water basin 11 that are connected successively, and described sludge condensation unit 16 comprises the concentration basin 13 and water extracter 14 that are connected successively; Described blowdown system 20 comprises dewatered sludge outward transport mouth 15 and water outlet up to standard 12; Described sludge condensation unit 16 and dewatered sludge are transported outward mouth 15 and are connected; Described redundant system unit 19 is connected with water outlet 12 up to standard.
Described upflow hydrolysis acidification pool 2 is provided with 36 water distribution flexible pipes, and described point-to-point water distributor 1 is connected by bottom water distribution flexible pipe and upflow hydrolysis acidification pool 2; Described upflow hydrolysis acidification pool 2 is disposed with Sludge Bed reaction zone, condenses precipitin reaction district and settling section from bottom to top.
Described sequence batch (settling tank comprises the first sequence batch (settling tank 7 and the second sequence batch (settling tank 8; Described first sequence batch (settling tank 7 is connected with rearmounted anoxic pond 6 respectively by sump pump with the second sequence batch (settling tank 8.
Be respectively arranged with enzyme in described Aerobic Pond 5, first sequence batch (settling tank 7 and the second sequence batch (settling tank 8 and float filler and aerating apparatus; Described aerating apparatus comprises jet aerator and jet-loop pump, and described jet aerator is connected with jet-loop pump.
Described strainer 10 is quartz filter.
Described concentration basin 13 is gravity concentration tank or air flotation pool; Described water extracter 14 is sheet frame water extracter or belt type dewaterer.
The treatment process of the denitrification system of high salinity low ratio of carbon to ammonium wastewater from chemical industry of the present invention, comprises the following steps:
Step I and II bio-chemical effluent, after gravity concentration, enters UC modular unit 17, and sewage is introduced into point-to-point water distributor 1, and is entered the bottom of upflow hydrolysis acidification pool 2 by water distribution flexible pipe, and reacted sewage enters air flotation pool 3 by effluent weir; The concentration requiring secondary biochemical waste water salinity not higher than 10000mg/L, C/N not higher than 3.5, water inlet index is COD is that 250mg/L to 300mg/L, BOD are not less than 150mg/L, and the scope of NH3-N is in 100mg/L to 200mg/L.
Step 2, the water outlet of described UC modular unit 17 are through air flotation pool 3, and described point-to-point water distributor 1 is connected with air flotation pool 3 respectively with upflow hydrolysis acidification pool 2; Anaerobic sludge not completely isolated in UC modular unit 17 water outlet is flow in upflow hydrolysis acidification pool 2 again; Any coagulating agent and coagulant aids is not added in air flotation pool 3; Wastewater streams, through point-to-point water distributor 1, is divided evenly to results of regular determination DO value, requires strictly to control anaerobic state; Upflow velocity: in pond, upflow velocity should control at below 0.5m/h.In addition, control interpolation hydrochloric acid or sodium hydroxide solution must ensure that in upflow hydrolysis acidification pool 2, waste water ph is between 6.5-8.5.
Water outlet in step 3, described air flotation pool 3 flows into the preposition anoxic pond 4 in HBF modular unit 18, nitrification liquid reflux pump is arranged between Aerobic Pond 5 and anoxic pond 4, the input terminus of described nitrification liquid reflux pump is connected with Aerobic Pond 5, and described nitrification liquid backflow delivery side of pump is connected with anoxic pond 4; The liquid of nitrification liquid reflux pump backflow conveying is uniformly mixed in preposition anoxic pond 4, and adding nitric nitrogen wherein carries out anti-nitration reaction simultaneously, and NH3-N is then oxidized to NO3-N;
The water outlet of described preposition anoxic pond 4 flows into Aerobic Pond 5, and wherein most of chemical oxygen demand COD is biodegradable, and is provided with active sludge, enzyme floats filler and microbial film in described Aerobic Pond 5, and described microbial film is arranged on active sludge and enzyme floats filler top; Have active sludge and enzyme to float filler in Aerobic Pond, containing microflora in active sludge, enzyme to float on filler also load microbial film, and microbial film is a kind of microflora.
The water outlet of described Aerobic Pond 5 flows into rearmounted anoxic pond 6 again, wherein waste water not by the further denitrification of complete denitrification, NO3-N denitrification is N2; Sewage alternately enters described first sequence batch (settling tank 7 and the second sequence batch (settling tank 8, and the residue sewage backflow partial sludge in batch settling tank is to preposition anoxic pond 4; The anoxic pond 6 of HBF modular unit, nitrification liquid quantity of reflux controls at 300% to 400% of flooding quantity, and maintain sludge concentration at 4000mg/L to 5000mg/L, excess sludge drains into sludge thickener in time; Be provided with dissolved oxygen meter, adjusting air inflow quantity in the Aerobic Pond 5 of HBF modular unit, ensure that in pond, dissolved oxygen concentration is 2mg/L to 3.5mg/L; Be provided with pH meter in Aerobic Pond 5, can add alkali pump by automatic start-stop, maintaining pH in pond is 6-9.
The water outlet of step 4, described HBF modular unit 18 flows into the intermediate pool 9 in redundant system unit 19, strainer 10 water outlet kept in by clean water basin (11), and clean water basin 11 provide backwashing water for strainer 10, and all the other water are discharged by water outlet 12 up to standard; Intermediate pool 9 top is provided with overflow weir, during HBF modular unit 18 stable effluent quality, without the need to strainer 10, waste water by overflow weir overflow to clean water basin 11.Be then by filteration in strainer 10, remove fine suspension and impurity in waste water, reduce the SS index of waste water.
Step 5, flow through the excess sludge of described UC modular unit 17, HBF modular unit 18 and redundant system unit 19, flow into sludge condensation unit 16, after concentrated by concentration basin 13, enter water extracter 14, after dehydration, discharge mud through dewatered sludge outward transport mouth 15.
In step one, upflow hydrolysis acidification pool 2 is disposed with Sludge Bed reaction zone, condenses precipitin reaction district and settling section from bottom to top; Described mud reacts in Sludge Bed reaction zone, and then sewage slowly rises, and successively through condensing precipitin reaction district and settling section, final sewage enters air flotation pool 3 by effluent weir.
As shown in table 1, for certain sewage work uses UC modular unit-air flotation pool in the present invention, the water inlet of the 1st day to the 24th day with go out Data Comparison situation before and after water treatment.
Table 1
Learnt by table 1, through apparatus of the present invention to after certain percolate sewage disposal 24d, the chemical oxygen demand COD in sewage is by after 419mg/L water quality parameter former state process 24d, and chemical oxygen demand COD rises to 538mg/L.83mg/L is risen to after the treated 24d of ammonia nitrogen 70mg/L.Increase UC module reactor in system, effectively can improve the biodegradability of system.
As shown in table 2, for certain sewage work uses HBF modular unit in the present invention-(redundant system unit), in the water inlet of the 1st day to the 24th day and water outlet Data Comparison situation.
Table 2
Learnt by table 2, through apparatus of the present invention to after certain percolate sewage disposal 24d, the chemical oxygen demand COD in sewage is by after 538mg/L water quality parameter former state process 24d, and chemical oxygen demand COD is down to 138mg/L.Degraded 6mg/L after the treated 24d of ammonia nitrogen 83mg/L.HBF module reactor can strengthen denitrification effect.
As shown in table 3, for certain sewage work uses the present invention to carry out circular treatment to sewage, COD clearance and ammonia nitrogen removal frank situation.
Table 3
Learnt by table 3, through apparatus of the present invention to after sewage disposal 24d, COD of sewage clearance is 67.06%; Sewage ammonia nitrogen clearance is 91.43%.Can learn that the present invention has good denitrogenation and removes the effect of chemical oxygen demand COD.
System and method of the present invention, flow process is simple, and flexibly, even water distribution, has good microorganism, sewage reaction system, and treatment effect is more efficient, and reduced investment, and level of automation is high.
Relative to prior art, tool of the present invention has the following advantages:
(1) be applicable to high salinity waste water: after debugging in whole system, the active sludge in biophase and microbial film, can do and adapt to containing highly-saline trade effluent, NaCl content can reach 10000mg/L to 12000mg/L, and Na
2sO
4content can reach 8000mg/L to 10000mg/L.
(2) be applicable to low C/N than waste water: in system, increase UC module reactor, effectively can improve the biodegradability of system, and HBF module reactor can strengthen denitrification effect.Therefore, conventional denitrification system only just can to NH at C/N>=4:1
3-N has good removal effect; Native system technique, for 4:1>=C/N>=2:1, also has splendid effect.When system BOD concentration is about 130mg/L, water outlet NH
3-N concentration is less than 10mg/L.
Although more employ the term such as point-to-point water distributor 1, upflow hydrolysis acidification pool 2, air flotation pool 3, preposition anoxic pond 4, Aerobic Pond 5, rearmounted anoxic pond 6, first sequence batch (settling tank 7, second sequence batch (settling tank 8, intermediate pool 9, strainer 10, clean water basin 11, water outlet up to standard 12, concentration basin 13, water extracter 14, dewatered sludge outward transport mouth 15, sludge condensation unit 16, UC modular unit 17, HBF modular unit 18, redundant system unit 19, blowdown system 20 herein, do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present invention more easily; The restriction that they are construed to any one additional is all contrary with spirit of the present invention.
More than show and describe ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and application claims protection domain is defined by appending claims, specification sheets and equivalent thereof.
Claims (10)
1. the denitrification system of one kind high salinity low ratio of carbon to ammonium wastewater from chemical industry, it is characterized in that: comprise UC modular unit (17), air flotation pool (3), HBF modular unit (18), redundant system unit (19) and blowdown system (20), described UC modular unit (17), air flotation pool (3), HBF modular unit (18), redundant system unit (19) are connected successively with blowdown system (20); Described UC modular unit (17), HBF modular unit (18) are connected with sludge condensation unit (16) respectively with redundant system unit (19); Described UC modular unit (17) comprises the point-to-point water distributor (1) and upflow hydrolysis acidification pool (2) that are connected successively; Described point-to-point water distributor (1) is connected with air flotation pool (3) respectively with upflow hydrolysis acidification pool (2); Described HBF modular unit (18) comprises sump pump, preposition anoxic pond (4), Aerobic Pond (5), rearmounted anoxic pond (6) and sequence batch (settling tank, and described preposition anoxic pond (4), Aerobic Pond (5), rearmounted anoxic pond (6) are connected successively with sequence batch (settling tank; Described redundant system unit (19) comprises the intermediate pool (9), strainer (10) and the clean water basin (11) that are connected successively; Described sludge condensation unit (16) comprises the concentration basin (13) and water extracter (14) that are connected successively.
2. the denitrification system of high salinity low ratio of carbon to ammonium wastewater from chemical industry according to claim 1, is characterized in that: described blowdown system (20) comprises dewatered sludge outward transport mouth (15) and water outlet up to standard (12); Described sludge condensation unit (16) and dewatered sludge are transported outward mouth (15) and are connected; Described redundant system unit (19) is connected with water outlet up to standard (12).
3. the denitrification system of high salinity low ratio of carbon to ammonium wastewater from chemical industry according to claim 1, it is characterized in that: described upflow hydrolysis acidification pool (2) is provided with 36 water distribution flexible pipes, described point-to-point water distributor (1) is connected with upflow hydrolysis acidification pool (2) bottom by water distribution flexible pipe; Described upflow hydrolysis acidification pool (2) is disposed with Sludge Bed reaction zone, condenses precipitin reaction district and settling section from bottom to top.
4. the denitrification system of high salinity low ratio of carbon to ammonium wastewater from chemical industry according to claim 1, is characterized in that: described Aerobic Pond is provided with dissolved oxygen meter in (5); Described sequence batch (settling tank comprises the first sequence batch (settling tank (7) and the second sequence batch (settling tank (8);
Described first sequence batch (settling tank (7) is connected with rearmounted anoxic pond (6) respectively by sump pump with the second sequence batch (settling tank (8).
5. the denitrification system of high salinity low ratio of carbon to ammonium wastewater from chemical industry according to claim 1, is characterized in that: be respectively arranged with enzyme in described Aerobic Pond (5), the first sequence batch (settling tank (7) and the second sequence batch (settling tank (8) and float filler and aerating apparatus;
Described aerating apparatus comprises jet aerator and jet-loop pump, and described jet aerator is connected with jet-loop pump.
6. the denitrification system of high salinity low ratio of carbon to ammonium wastewater from chemical industry according to claim 1, is characterized in that: described strainer (10) is quartz filter.
7. the denitrification system of high salinity low ratio of carbon to ammonium wastewater from chemical industry according to claim 1, is characterized in that: described concentration basin (13) is gravity concentration tank or air flotation pool; Described water extracter (14) is sheet frame water extracter or belt type dewaterer.
8. the treatment process of the denitrification system of the high salinity low ratio of carbon to ammonium wastewater from chemical industry described in any one of claim 1 to 7, is characterized in that comprising the following steps:
Step I and II bio-chemical effluent is after gravity concentration, enter UC modular unit (17), sewage is introduced into point-to-point water distributor (1), and the bottom of upflow hydrolysis acidification pool (2) is entered by water distribution flexible pipe, reacted sewage enters air flotation pool (3) by effluent weir;
Step 2, described UC modular unit (17) water outlet are through air flotation pool (3), and described point-to-point water distributor (1) is connected with air flotation pool (3) respectively with upflow hydrolysis acidification pool (2); Anaerobic sludge not completely isolated in UC modular unit (17) water outlet is flow to again in upflow hydrolysis acidification pool (2);
Water outlet in step 3, described air flotation pool (3) flows into the preposition anoxic pond (4) in HBF modular unit (18), nitrification liquid reflux pump is arranged between Aerobic Pond and anoxic pond, the input terminus of described nitrification liquid reflux pump is connected with Aerobic Pond, and described nitrification liquid backflow delivery side of pump is connected with anoxic pond;
The liquid of nitrification liquid reflux pump backflow conveying is uniformly mixed in preposition anoxic pond (4), and adding nitric nitrogen wherein carries out anti-nitration reaction simultaneously; The water outlet of described preposition anoxic pond (4) flows into Aerobic Pond (5), wherein most of chemical oxygen demand COD is biodegradable, described Aerobic Pond is provided with active sludge in (5), enzyme floats filler and microbial film, and described microbial film is arranged on active sludge and enzyme floats filler top;
The water outlet of described Aerobic Pond (5) flows into rearmounted anoxic pond (6) again, wherein waste water not by the further denitrification of complete denitrification; Sewage alternately enters described first sequence batch (settling tank (7) and the second sequence batch (settling tank (8), and the residue sewage backflow partial sludge in batch settling tank is to preposition anoxic pond (4);
The water outlet of step 4, described HBF modular unit (18) flows into the intermediate pool (9) in redundant system unit (19), strainer (10) water outlet kept in by clean water basin (11), and clean water basin (11) provide backwashing water for strainer (10), and all the other water are discharged by water outlet up to standard (12);
Step 5, flow through the excess sludge of described UC modular unit (17), HBF modular unit (18) and redundant system unit (19), flow into sludge condensation unit (16), after concentrated by concentration basin (13), enter water extracter (14), after dehydration, discharge mud through dewatered sludge outward transport mouth (15).
9. the treatment process of the denitrification system of high salinity low ratio of carbon to ammonium wastewater from chemical industry according to claim 8, it is characterized in that: in step one, upflow hydrolysis acidification pool (2) is disposed with Sludge Bed reaction zone, condenses precipitin reaction district and settling section from bottom to top; Described mud reacts in Sludge Bed reaction zone, and then sewage slowly rises, and successively through condensing precipitin reaction district and settling section, final sewage enters air flotation pool (3) by effluent weir.
10. the treatment process of the denitrification system of high salinity low ratio of carbon to ammonium wastewater from chemical industry according to claim 8, it is characterized in that: in step 4, intermediate pool (9) top is provided with overflow weir, during HBF modular unit 18 stable effluent quality, without the need to strainer (10), waste water by overflow weir overflow to clean water basin (11).
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| CN205061792U (en) * | 2015-09-02 | 2016-03-02 | 上海泓济环保工程有限公司 | Denitrogenation system of low carbon -nitrogen ratio chemical industry waste water of high salt concentration |
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| JP2010125361A (en) * | 2008-11-26 | 2010-06-10 | Akinobu Fujita | Wastewater treatment system and purification system |
| CN103145247A (en) * | 2013-04-02 | 2013-06-12 | 上海泓济环保工程有限公司 | Composite HBF (Honess Hybrid Biological&Fixed film Technology) module reactor and sewage treatment process |
| CN203781977U (en) * | 2014-03-06 | 2014-08-20 | 浙江中创环保设备有限公司 | Salt-containing wastewater treatment system |
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