CN103183455B - Device and method for biologically denitrifying wastewater with high salinity - Google Patents
Device and method for biologically denitrifying wastewater with high salinity Download PDFInfo
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- CN103183455B CN103183455B CN201310123223.2A CN201310123223A CN103183455B CN 103183455 B CN103183455 B CN 103183455B CN 201310123223 A CN201310123223 A CN 201310123223A CN 103183455 B CN103183455 B CN 103183455B
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Abstract
The invention relates to a device for biologically denitrifying wastewater with high salinity. The device adopts an anaerobic-composite biological membrane reactor as a main body, and is in continuous operation. The composite biological membrane reactor is filled with biological stuffing, and the composite biological membrane reactor is provided with a composite biological response zone combining a biomembrance process with an activated sludge process. The invention further discloses a method for biologically denitrifying wastewater with high salinity. The method is characterized in that collected salt-bearing bottom sediment is inoculate in the device, simulation ammonia-nitrogen wastewater with 15 g/L to 75 g/L salt contents serves as feeding water, and the continuous operation is carried out for 10-40 times, and then actual industrial wastewater with high salinity is added, and the continuous operation is carried out for 5-20 times, so that a system for biologically denitrifying wastewater with high salinity is built. The built system for biologically denitrifying can treat wastewater with 0.5 to 10% high salinity stably and effectively. The biologically denitrifying treatment is achieved under the condition of no desalination and no salinity dilution. The problem that the domestication time of the salinity of freshwater organisms is longer and instable, resulting in serious engineering application constraint is solved, and meanwhile, the treatment cost is further lowered, and on the premise of ensuring that the effluent quality is safe and stable, the treatment efficiency is improved, and the operation power consumption and the operation cost are saved.
Description
Technical field
The invention belongs to sewage disposal, environmental protection technical field; be specifically related to the device and method of a kind of high slat-containing wastewater biological denitrificaion treatment system rapid build steady running, especially a kind of device and method that utilizes saltern mud rapid build high slat-containing wastewater biological denitrificaion treatment system and realize high slat-containing wastewater biological denitrificaion.
Background technology
High slat-containing wastewater refers generally to total salinity (with NaCl content meter) and is at least 1% waste water, is extensively present in the industries such as chemical industry, pharmacy, process hides, food, oil recovery, marine products processing.The organic waste water salinity of some Industrial products process discharges even surpasses 20%, and after mixing with other waste water, salt concn also often surpasses 3%.Because high salt industrial waste water generally contains the ammonia nitrogen (about 1000 ~ 5000mg/L) of high density, if can not qualified discharge, non-compliant high-salt wastewater can polluted surface, soil, coastal and river mouth etc., cause such as various environmental problems and ecological problems such as eutrophication.Common biochemical treatment is difficult to steady running to high salt nitrogen-containing wastewater, is the bottleneck of sewage disposal always.And a lot of enterprises utilize clear water to be diluted to 0.8% below to process, so not only cause the waste of water resources, the while also increases treatment facility and total amount of pollutants discharged.Therefore, realize how effectively, economically high slat-containing wastewater biological denitrificaion and be treated as Science and engineering difficulties urgently to be resolved hurrily.
High-salt wastewater accounts for 5% of global waste water total amount in world wide, and still with annual 2% year rate of rise, increases.And high slat-containing wastewater is processed physico-chemical processes and the two kinds of methods of biological process of mainly containing at present.Wherein the former mainly comprises the technology such as evaporation, coagulation, ion-exchange, extraction, reverse osmosis, when advantage is to remove organic pollutant, realizes the desalination of brine waste.But there is investment and the higher shortcoming of running cost.It is the focus of studying in recent years that biological process is processed high slat-containing wastewater, has obtained certain achievement.Research shows that salinity can suppress the growth of nitrifier, and nitration reaction is impacted all responsive to salt concn and salt.The clearance of finding ammonia nitrogen in the NaCl system of 50g/L during the processing brine wastes such as M.F.Rose only has 48%, and there is no the clearance of ammonia nitrogen in NaCl system up to 94%.G.H.Chen etc. find that in nitration reaction process, nitrobacteria is more responsive than nitrite bacteria to salinity, and after reaching certain salinity, nitrifying process there will be a large amount of accumulation of nitrous acid.Studies confirm that in hypersaline environment and can carry out denitrification, P.vander Hoek etc. find NaCl or Na
2cO
3during for 30g/L, can carry out anti-nitration reaction.Most result of study shows that Denitrification rate is along with water inlet salinity increases and reduces, but S.Yoshie etc. show that by test salinity is the denitrification activity that 10% denitrification activity is 2% higher than salinity, halophilic bacterium denitrification and non-ly have a liking for salt denitrifying bacteria and may coexist under 2% salinity, and compete mutually substrate, yet under 10% salinity, may cause halophilic bacterium denitrifying bacteria to dominate, thereby improve denitrification efficiency.
In recent years, very to scholar, adopt the mode of fresh water microorganism to realize the biological treatment of nitrogen-containing wastewater, there are a lot of drawbacks in this method still:
(1) processing efficiency is low.After traditional denitrifying sludge is tamed by salinity gradient, maximum tolerance salinity≤20g/L.Under hypersaline environment (salinity > 2%), through the fresh water active sludge of salinity domestication, receive severe inhibition, nitric efficiency lowly stops even completely.
(2) adaptability is poor.Fresh water microorganism is affected by salinity shock load, and the variation of salinity can cause the disappearance of acclimation sludge salt resistance ability, the stability of severe jamming treatment system.
(3) start time is longer.Fresh water active sludge adapt to saline environment often needs surpass the domestication time of more than 30 day, and along with the increasing of salinity, the domestication time is longer.
Studies have shown that at present it is infeasible that domestication fresh water active sludge carries out in not desalination, do not carry out salinity dilution in the situation that high slat-containing wastewater biological denitrificaion processes, therefore need to find other method carries out biological denitrificaion.
Halophilic microorganism is that a class is lived in the extreme microorganism in hypersaline environment, is extensively present in the hypersaline environments such as saltern, salt lake, soil.According to salinity scope (1 ~ 30%), halophilic microorganism is divided into Facultative Halophiles, slight halophilic bacterium, Halophilic Bacterium and Natrinema altunense sp.These halophilic microorganisms form the ability that unique height is survived in oozing environment in long-term evolutionary process, have very special physiological structure and metabolic mechanism.The aspects such as character, pathways metabolism and information transmission, protein nucleic acid composition and conformation of the stability of the cytolemma of halophilic microorganism, cell wall structure composition and functional ingredient, reaction kinetics, enzyme system have specificity for adapting to hypersaline environment.These Mechanisms of Salt Resistances have guaranteed that halophilic microorganism carries out metabolism and growth in hypersaline environment.
Traditional anaerobism-Using Hybrid Biofilm Reactor can realize biological nitration and the denitrification of microorganism, and for the processing of ammonia nitrogen waste water under high salt condition, studies less.Therefore the present invention improves on the basis of traditional anaerobism-Using Hybrid Biofilm Reactor, adds biologic packing material in Using Hybrid Biofilm Reactor, by maintaining the biomass of more denitrification microorganism, improves the nitrification of microorganism.Further reduce the processing cost of waste water simultaneously, save initial cost.Number of patent application CN 102153199A disclose a set of can rapid build and maintain the device and method of high-salt wastewater short-cut denitrification biological treatment, wherein apparatus main body adopts SBR bio-reactor as main body, according to intermittent mode, move, success builds 2% ~ 10% high-salt wastewater treatment system, with Haikou, river bed mud, be seeded in device, process the sanitary sewage of saltiness 2.8% ~ 3.3%.
Summary of the invention
Technical problem to be solved by this invention is for the deficiencies in the prior art, a kind of problem that can overcome the engineering constraintization application such as traditional microbial acclimation denitrogenation start-up period is long, clearance is lower, unstable is provided, realizes in not desalination, carry out or not salinity dilution in the situation that the device that the high slat-containing wastewater biological denitrificaion of brine waste biological denitrificaion processing is processed.
Another problem to be solved by this invention is the method that also provides application said apparatus to carry out the processing of high slat-containing wastewater biological denitrificaion.
Technical problem to be solved by this invention is to realize by following technical scheme.The present invention is a kind of high slat-containing wastewater biological denitrificaion treatment unit, is characterized in: this device comprises that anaerobic reactor, Using Hybrid Biofilm Reactor, carbon source add groove, inlet flume and settling tank;
Described inlet flume is connected with anaerobic reactor by suction culvert, is provided with the first lift pump on suction culvert;
Described carbon source is added groove and is connected with anaerobic reactor by adding pipeline, is provided with peristaltic pump adding on pipeline;
In described anaerobic reactor, be provided with the first heating and temperature controlling device and paddle wheel, paddle wheel is connected with the agitator outside anaerobic reactor;
Described anaerobic reactor is connected with Using Hybrid Biofilm Reactor by transfer line, is provided with the second lift pump on transfer line; In Using Hybrid Biofilm Reactor, be provided with the second heating and temperature controlling device, biologic packing material and aeration head, aeration head is connected with the aeration pump outside Using Hybrid Biofilm Reactor by aerating pipelines, and aerating pipelines is provided with spinner-type flowmeter;
Using Hybrid Biofilm Reactor and anaerobic reactor (between be connected with the return line with the first reflux pump; Using Hybrid Biofilm Reactor is also connected with settling tank by overflow spout; On settling tank, be also connected with supernatant liquor escape route, settling tank bottom is provided with the emptying pipeline with exhaust-valve, is connected with sludge reflux pipeline between emptying pipeline and anaerobic reactor, and sludge reflux pipeline is provided with the second reflux pump.
In high slat-containing wastewater biological denitrificaion treatment unit of the present invention: described biologic packing material is preferably lint bulk filler, and bed stuffing height accounts for 40 ~ 80% of Using Hybrid Biofilm Reactor total height; Described lint bulk filler is the lint bulk hanging filler that soft plastics or fiber are made, and single filler diameter is 150mm ~ 250mm, and it is 50mm ~ 150mm that filler hangs spacing.
The present invention also provides a kind of method of utilizing the device described in above technical scheme to carry out the processing of high slat-containing wastewater biological denitrificaion, is characterized in, its step is as follows:
(1) mud sample is inoculated into respectively in anaerobic reactor, Using Hybrid Biofilm Reactor, settling tank, and keeps the volatile solid thing VSS of suitable concn; Described mud sample is taken from the mud in saltern, saltings or salt lake, and salinity is 0.5 ~ 10%;
(2) postvaccinal mud sample is carried out to activation culture, biologic packing material is put into Using Hybrid Biofilm Reactor, close peristaltic pump, the first lift pump, open the second reflux pump, the first reflux pump; In anaerobic reactor, add liquid nutrient medium A every day, in Using Hybrid Biofilm Reactor, settling tank, add liquid nutrient medium B, finally make volatile sludge concentration VSS>=2000mg/L in above-mentioned three devices; Described liquid nutrient medium A is: 1gKNO
3, 1gKNO
2, 0.2gMgSO
47H
2o, 0.1g (NH
4)
6mO
7o
244H
2o, 0.5gK
2hPO
4, 10g C
6h
12o
6, 0.5g peptone, distilled water 1000 mL; Described liquid nutrient medium B is: 1g urea, 1gNa
2cO
3, 0.2gMgSO
47H
2o, 0.1g (NH
4)
6mO
7o
244H
2o, 0.5g K
2hPO
4, 10g C
6h
12o
6, 0.5g peptone, distilled water 1000 mL;
(3) in inlet flume, add simulation ammonia nitrogen waste water, and add the brine waste that industrial sodium-chlor is mixed with applicable concentration, as the former water inlet of aftertreatment device; The mass concentration of simulation ammonia nitrogen waste water is 50mg/L ~ 350mg/L; Described ammonia nitrogen waste water is formulated by urea or ammonium chloride or ammonium sulfate or its mixture;
(4) with the first lift pump, the waste water in inlet flume is entered to anaerobic reactor along suction culvert, be suspended liquid-phase mixing with the mud in the Using Hybrid Biofilm Reactor refluxing by return line, the first reflux pump; Open peristaltic pump, the carbon source that carbon source is added in groove enters in anaerobic reactor along adding pipeline, in the hydraulic detention time of setting, completes biological denitrification; The temperature of the first heating and temperature controlling device and the second heating and temperature controlling device maintains at 20 ℃ ~ 45 ℃;
(5) water outlet of anaerobic reactor enters Using Hybrid Biofilm Reactor through transfer line, the second lift pump, aeration pump is sent to aeration head by pressurized air along aerating pipelines, by aeration head, gas dispersion is become to tiny bubble, air feed speed is controlled by spinner-type flowmeter, in the hydraulic detention time of setting, completes the aerobic nitrification stage;
(6) Using Hybrid Biofilm Reactor water outlet enters in settling tank by overflow spout, within the time of setting, complete precipitation, supernatant liquor is discharged by supernatant liquor escape route, and settling tank bottom mud enters in anaerobic reactor by sludge return pipe, the second reflux pump, supplements in right amount mud;
(7) as ready line number, after the cycle, changes original simulation ammonia nitrogen waste water in inlet flume into actual high saliferous industrial sewage, then moves according to step (4)-(6).
In above-described the inventive method, further preferred technical characterictic or technical scheme are:
1. in step (1), volatility is the concentration >=500mg/L of suspended substance fixedly.
2. in step (3), with certain concentration gradient, add simulation ammonia nitrogen waste water, concrete grammar is as follows: it is 50 mg/L that the initial stage adds ammonia nitrogen mass concentration, when stablize≤15mg/L of water outlet ammonia nitrogen concentration, improve gradually ammonia nitrogen concentration, each amplitude improving is 5mg/L ~ 20mg/L, and it is 350mg/L that final ammonia nitrogen adds mass concentration.
3. in step (3), in inlet flume (3), brine waste mass concentration is 15g/L ~ 75g/L.
4. carbon source is added the carbon source in groove (1) in step (4), is formulated by glucose or methyl alcohol or sodium acetate.
5. in step (4), the hydraulic detention time of biological denitrification is 2 ~ 8h; In step (5), the hydraulic detention time 8 ~ 24h of biological nitration; Hydraulic detention time 1h ~ the 4h of settling tank in step (6).
6. in step (3), in inlet flume (3), add while simulating ammonia nitrogen waste water, repeating step (3) ~ step (6), the cycle of operation is 10 ~ 40 times.
In 7 steps (7), in inlet flume (3), simulation ammonia nitrogen waste water changes into after actual high slat-containing wastewater, repeating step (4) ~ step (6), and the cycle of operation is 5 ~ 20 times.
Compared with prior art, the present invention has the following advantages:
(1) the present invention improves traditional anaerobic-aerobic device, the biological denitrificaion that adopts anaerobism-Using Hybrid Biofilm Reactor to carry out brine waste is processed, the organism that denitrification microorganism contact degradation biological filler are held back, reduce the loss of mud, there is higher volumetric loading and microorganism concn.
(2) biological denitrificaion that the present invention adopts anaerobism-Using Hybrid Biofilm Reactor to carry out brine waste is processed, and has improved nitrification and denitrification speed, has reduced the volume size of device.The raising of speed of response, has reduced initial cost and running cost.
(3) device and method that a kind of high slat-containing wastewater biological denitrificaion that the present invention builds is processed, treatment effect is stable, tolerates larger impact load.Owing to adopting the mud sample in saltern, a large amount of halophilic bacterium groups, scalable salinity range are contained in the inside.
(4) device and method that a kind of high slat-containing wastewater biological denitrificaion that the present invention builds is processed is short start time, can realize the biological holder processing of brine waste by fast and stable, simple to operation, is beneficial to the popularization of through engineering approaches.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of apparatus of the present invention;
Fig. 2 is the water inlet of analog synthesis ammonia waste water, water outlet ammonia nitrogen mass concentration and ammonia nitrogen removal frank in the inventive method;
Fig. 3 is the water inlet of saliferous acrylic nitrile waste water, water outlet ammonia nitrogen mass concentration and ammonia nitrogen removal frank in the inventive method.
Embodiment
Embodiment 1, with reference to Fig. 1, and a kind of high slat-containing wastewater biological denitrificaion treatment unit, this device comprises that anaerobic reactor 9, Using Hybrid Biofilm Reactor 17, carbon source add groove 1, inlet flume 3 and settling tank 22;
Described inlet flume 3 is connected with anaerobic reactor 9 by suction culvert 5, is provided with the first lift pump 4 on suction culvert 5;
Described carbon source is added groove 1 and is connected with anaerobic reactor 9 by adding pipeline 6, is provided with peristaltic pump 2 adding on pipeline 6;
In described anaerobic reactor 9, be provided with the first heating and temperature controlling device 7 and paddle wheel 8, paddle wheel 8 is connected with the agitator 10 outside anaerobic reactor 9;
Described anaerobic reactor 9 is connected with Using Hybrid Biofilm Reactor 17 by transfer line 11, is provided with the second lift pump 12 on transfer line 11; In Using Hybrid Biofilm Reactor 17, be provided with the second heating and temperature controlling device 16, biologic packing material 14 and aeration head 15, aeration head 15 is connected with the aeration pump 19 outside Using Hybrid Biofilm Reactor 17 by aerating pipelines 20, and aerating pipelines 20 is provided with spinner-type flowmeter 18;
Between Using Hybrid Biofilm Reactor 17 and anaerobic reactor 9, be connected with the return line 28 with the first reflux pump 27; Using Hybrid Biofilm Reactor 17 is also connected with settling tank 22 by overflow spout 21; On settling tank 22, be also connected with supernatant liquor escape route 24, settling tank 22 bottoms are provided with the emptying pipeline 13 with exhaust-valve 23, between emptying pipeline 13 and anaerobic reactor 9, are connected with sludge reflux pipeline 25, and sludge reflux pipeline 25 is provided with the second reflux pump 26.
Embodiment 2, in the high slat-containing wastewater biological denitrificaion treatment unit described in embodiment 1: described biologic packing material 14 is lint bulk filler, and bed stuffing height accounts for 40 ~ 80% of Using Hybrid Biofilm Reactor 17 total heights; Described lint bulk filler is the lint bulk hanging filler that soft plastics or fiber are made, and single filler diameter is 150mm ~ 250mm, and it is 50mm ~ 150mm that filler hangs spacing.
Embodiment 3, the method that the device described in a kind of embodiment of utilization 1 or 2 carries out the processing of high slat-containing wastewater biological denitrificaion, and its step is as follows:
(1) mud sample is inoculated into respectively in anaerobic reactor 9, Using Hybrid Biofilm Reactor 17, settling tank 22, and keeps the volatile solid thing VSS of suitable concn; Described mud sample is taken from the mud in saltern, saltings or salt lake, and salinity is 0.5 ~ 10%;
(2) postvaccinal mud sample is carried out to activation culture, biologic packing material 14 is put into Using Hybrid Biofilm Reactor 17, close peristaltic pump 2, the first lift pump 4, open the second reflux pump 26, the first reflux pump 27; In anaerobic reactor 9, add liquid nutrient medium A every day, in Using Hybrid Biofilm Reactor 17, settling tank 22, add liquid nutrient medium B, finally make volatile sludge concentration VSS>=2000mg/L in above-mentioned three devices; Described liquid nutrient medium A is: 1gKNO
3, 1gKNO
2, 0.2gMgSO
47H
2o, 0.1g (NH
4)
6mO
7o
244H
2o, 0.5gK
2hPO
4, 10g C
6h
12o
6, 0.5g peptone, distilled water 1000 mL; Described liquid nutrient medium B is: 1g urea, 1gNa
2cO
3, 0.2gMgSO
47H
2o, 0.1g (NH
4)
6mO
7o
244H
2o, 0.5g K
2hPO
4, 10g C
6h
12o
6, 0.5g peptone, distilled water 1000 mL;
(3) in inlet flume 3, add simulation ammonia nitrogen waste water, and add the brine waste that industrial sodium-chlor is mixed with applicable concentration, as the former water inlet of aftertreatment device; The mass concentration of simulation ammonia nitrogen waste water is 50mg/L ~ 350mg/L; Described ammonia nitrogen waste water is formulated by urea or ammonium chloride or ammonium sulfate or its mixture;
(4) with the first lift pump 4, the waste water in inlet flume 3 is entered to anaerobic reactor 9 along suction culvert 5, be suspended liquid-phase mixing with the mud in the Using Hybrid Biofilm Reactor 17 refluxing by return line 28, the first reflux pump 27; Open peristaltic pump 2, the carbon source that carbon source is added in groove 1 enters in anaerobic reactor 9 along adding pipeline 6, in the hydraulic detention time of setting, completes biological denitrification; The temperature of the first heating and temperature controlling device 7 and the second heating and temperature controlling device 16 maintains at 20 ℃ ~ 45 ℃;
(5) water outlet of anaerobic reactor 9 enters Using Hybrid Biofilm Reactor 17 through transfer line 11, the second lift pump 12, aeration pump 19 is sent to aeration head 15 by pressurized air along aerating pipelines 20, by aeration head 15, gas dispersion is become to tiny bubble, air feed speed is controlled by spinner-type flowmeter 18, in the hydraulic detention time of setting, completes the aerobic nitrification stage;
(6) Using Hybrid Biofilm Reactor 17 water outlets enter in settling tank 22 by overflow spout 21, within the time of setting, complete precipitation, supernatant liquor is discharged by supernatant liquor escape route 24, settling tank 22 bottom mud enter in anaerobic reactor 9 by sludge return pipe 25, the second reflux pump 26, supplement in right amount mud;
(7) as ready line number, after the cycle, changes original simulation ammonia nitrogen waste water in inlet flume 3 into actual high saliferous industrial sewage, then moves according to step (4)-(6).
Embodiment 4, and in the step (1) of the method described in embodiment 3, volatility is the concentration >=500mg/L of suspended substance fixedly.
Embodiment 5, in the step of the method described in embodiment 3 (3), with certain concentration gradient, add simulation ammonia nitrogen waste water, concrete grammar is as follows: it is 50 mg/L that the initial stage adds ammonia nitrogen mass concentration, when stablize≤15mg/L of water outlet ammonia nitrogen concentration, improve gradually ammonia nitrogen concentration, each amplitude improving is 5mg/L ~ 20mg/L, and it is 350mg/L that final ammonia nitrogen adds mass concentration.
Embodiment 6, and in the step (3) of the method described in embodiment 3, in inlet flume 3, brine waste mass concentration is 15g/L ~ 75g/L.
Embodiment 7, and in the step (4) of the method described in embodiment 3, carbon source is added the carbon source in groove 1, are formulated by glucose or methyl alcohol or sodium acetate.
Embodiment 8, and in the step (4) of the method described in embodiment 3, the hydraulic detention time of biological denitrification is 2 ~ 8h; In step (5), the hydraulic detention time 8 ~ 24h of biological nitration; Hydraulic detention time 1h ~ the 4h of settling tank in step (6).
Embodiment 9, in the step (3) of the method described in embodiment 3, and while adding simulation ammonia nitrogen waste water in inlet flume (3), repeating step (3) ~ step (6), the cycle of operation is 10 ~ 40 times.
Embodiment 10, and in the step (7) of the method described in embodiment 3, in inlet flume (3), simulation ammonia nitrogen waste water changes into after actual high slat-containing wastewater, repeating step (4) ~ step (6), and the cycle of operation is 5 ~ 20 times.
Embodiment 11, utilize the device described in embodiment 1 or 2 to carry out the method that saliferous synthetic ammonia wastewater biological denitrificaion is processed, and comprise the following steps:
Step 1, the mud sample of taking from salt lake, Qinghai is inoculated into respectively in anaerobic reactor 9, Using Hybrid Biofilm Reactor 17, settling tank 22, makes volatile solid thing (VSS) be about 1000mg/L.Wherein the salinity of mud sample is 1.5%.
Step 2, carries out activation culture to postvaccinal mud sample, and biologic packing material is put into Using Hybrid Biofilm Reactor 17, closes peristaltic pump 2, the first lift pump 4, opens the second reflux pump 26, the first reflux pump 27.Adding liquid nutrient medium A:1gKNO at anaerobic reactor 9 every day
3, 1gKNO
2, 0.2gMgSO
47H
2o, 0.1g (NH
4)
6mO
7o
244H
2o, 0.5gK
2hPO
4, 10g C
6h
12o
6, 0.5g peptone, distilled water 1000 mL; In Using Hybrid Biofilm Reactor 17, settling tank 22, add liquid nutrient medium B: liquid nutrient medium B is: 1g urea, 1gNa
2cO
3, 0.2gMgSO
47H
2o, 0.1g (NH
4)
6mO
7o
244H
2o, 0.5g K
2hPO
4, 10g C
6h
12o
6, 0.5g peptone, distilled water 1000 mL, finally make volatile sludge concentration (VSS)>=3000mg/L in above-mentioned three devices.
Step 3, in inlet flume 3, the initial stage adds the nitrogen-containing wastewater of the 50mg/L of urea preparation, and adding industrial sodium-chlor, to be mixed with salinity be 2% salt solution, as the former water inlet of reactor.While adding simulation ammonia nitrogen waste water in inlet flume 3, while needing water outlet ammonia nitrogen mass concentration≤15mg/, can add, to avoid too high ammonia nitrogen concentration to poison, even suppress microbial growth, improve gradually at every turn according to the amplitude of 15 mg/L, finally making ammonia nitrogen concentration is 350mg/L.
Step 4, enters anaerobic reactor 9 by the waste water in inlet flume 3 along suction culvert 5 with the first lift pump 4, is suspended liquid-phase mixing with the mud in the Using Hybrid Biofilm Reactor 17 refluxing by reflux line 28, the first reflux pump 27.In carbon source, add groove 1 preparation glucose solution, open peristaltic pump 2, glucose solution enters in anaerobic reactor along adding pipeline 6, and the first lift pump 4 will complete biological denitrification in 4h.
Step 5, anaerobic reactor 9 water outlets enter Using Hybrid Biofilm Reactor 17 through transfer line 11, the second lift pump 12, aeration pump 19 is sent to aeration head 15 by pressurized air along aerating pipelines 20, by aeration head 15, gas dispersion is become to tiny bubble, air feed speed is controlled by spinner-type flowmeter 18, completes the aerobic nitrification stage in 10h.
Step 6, Using Hybrid Biofilm Reactor 17 water outlets enter in settling tank 22 by overflow spout 21, in 1h, complete precipitation, supernatant liquor is discharged by drainage pipeline 24, settling tank 22 bottom mud enter in anaerobic reactor 9 by sludge return pipe 25, the second reflux pump 26, to supplement the loss of mud.
Step 7, the cycle of operation of simulating ammonia nitrogen waste water in inlet flume 3 is 30 times.After the cycle of operation finishes, simulation ammonia nitrogen waste water changes synthetic ammonia waste water into, and wherein water quality situation is as follows: COD concentration is that 500mg/L, ammonia nitrogen concentration are that 150mg/L left and right, pH are 6 ~ 9.Adding industrial sodium-chlor, to be mixed with salinity be 1.5% synthetic ammonia waste water, and the cycle of operation is 10 times.
Saliferous synthetic ammonia waste water in inlet flume 3 enters anaerobic reactor 9 through the first lift pump 4 along suction culvert 5, is suspended liquid-phase mixing with the mud in the Using Hybrid Biofilm Reactor 17 refluxing by return line 28, the first reflux pump 27.In carbon source, add groove 1 preparation glucose solution, open peristaltic pump 2, glucose solution enters in anaerobic reactor along adding pipeline 6, and the first lift pump 4 will complete biological denitrification in 4h.Anaerobic reactor 9 water outlets enter Using Hybrid Biofilm Reactor 17 through transfer line 11, the second lift pump 12, aeration pump 19 is sent to aeration head 15 by pressurized air along aerating pipelines 20, by aeration head 15, gas dispersion is become to tiny bubble, air feed speed is controlled by spinner-type flowmeter 18, completes the aerobic nitrification stage in 10h.Using Hybrid Biofilm Reactor 17 water outlets enter in settling tank 22 by overflow spout 21, in 1h, complete precipitation, supernatant liquor is discharged by supernatant liquor discharge pipe line 24, settling tank 22 bottom mud enter in anaerobic reactor 9 by sludge return pipe 25, the second reflux pump 26, to supplement the loss of mud.
Utilize after said apparatus operation, ammonia nitrogen average removal rate is more than 98.7%.Its effect is with reference to Fig. 2.
Embodiment 12, utilize embodiment 1 or 2 devices to carry out the method that saliferous acrylic nitrile waste water biological denitrificaion is processed, and comprise the following steps:
Step 1, the mud sample of taking from saltern, Lianyun Harbour is inoculated into respectively in anaerobic reactor 9, Using Hybrid Biofilm Reactor 17, settling tank 22, makes volatile solid thing (VSS) be about 1500mg/L.Wherein the salinity of mud sample is 2%.
Step 2, carries out activation culture to postvaccinal mud sample, and biologic packing material is put into Using Hybrid Biofilm Reactor 17, closes peristaltic pump 2, the first lift pump 4, opens the second reflux pump 26, the first reflux pump 27.Adding liquid nutrient medium A:1gKNO at anaerobic reactor 9 every day
3, 1gKNO
2, 0.2gMgSO
47H
2o, 0.1g (NH
4)
6mO
7o
244H
2o, 0.5gK
2hPO
4, 10g C
6h
12o
6, 0.5g peptone, distilled water 1000 mL; In Using Hybrid Biofilm Reactor 17, settling tank 22, add liquid nutrient medium B: liquid nutrient medium B is: 1g urea, 1gNa
2cO
3, 0.2gMgSO
47H
2o, 0.1g (NH
4)
6mO
7o
244H
2o, 0.5g K
2hPO
4, 10g C
6h
12o
6, 0.5g peptone, distilled water 1000 mL, finally make volatile sludge concentration (VSS)>=3500mg/L in above-mentioned three devices.
Step 3, in inlet flume 3, the initial stage adds the nitrogen-containing wastewater of the 50mg/L of urea preparation, and adding industrial sodium-chlor, to be mixed with salinity be 2% salt solution, as the former water inlet of reactor.While adding simulation ammonia nitrogen waste water in inlet flume 3, while needing water outlet ammonia nitrogen mass concentration≤15mg/, can add, to avoid too high ammonia nitrogen concentration to poison, even suppress microbial growth, improve gradually at every turn according to the amplitude of 10 mg/L, finally making ammonia nitrogen concentration is 350mg/L.
Step 4, enters anaerobic reactor 9 by the waste water in inlet flume 3 along suction culvert 5 by the first lift pump 4, is suspended liquid-phase mixing with the mud in the Using Hybrid Biofilm Reactor 17 refluxing by return line 28, the first reflux pump 27.In carbon source, add groove 1 preparation glucose solution, open peristaltic pump 2, glucose solution enters in anaerobic reactor along adding pipeline 6, and the first lift pump 4 will complete biological denitrification in 4h.
Step 5, anaerobic reactor 9 water outlets enter Using Hybrid Biofilm Reactor 17 through transfer line 11, the second lift pump 12, aeration pump 19 is sent to aeration head 15 by pressurized air along aerating pipelines 20, by aeration head 15, gas dispersion is become to tiny bubble, air feed speed is controlled by spinner-type flowmeter 18, completes the aerobic nitrification stage in 10h.
Step 6, Using Hybrid Biofilm Reactor 17 water outlets enter in settling tank 22 by overflow spout 21, in 1h, complete precipitation, supernatant liquor is discharged by supernatant liquor discharge pipe line 24, settling tank 22 bottom mud enter in anaerobic reactor 9 by sludge return pipe 25, the second reflux pump 26, to supplement the loss of mud.
Step 7, in inlet flume 3, simulating the ammonia nitrogen waste water cycle of operation is 30 times.After end of run, simulation ammonia nitrogen waste water changes actual saliferous acrylic nitrile waste water into, moves 20 times.Wherein water quality situation is as follows: COD concentration is that 2000mg/L, ammonia nitrogen concentration are that 150 ~ 200mg/L, pH are 8 ~ 10, salinity (take NaCl) is 2.5%.
Saliferous acrylic nitrile waste water in inlet flume 3 enters anaerobic reactor 9 through the first lift pump 4 along suction culvert 5, is suspended liquid-phase mixing with the mud by adding in the Using Hybrid Biofilm Reactor 17 that flows pipeline 28, the first reflux pump 27 backflows.In carbon source, add groove 1 preparation glucose solution, open peristaltic pump 2, glucose solution enters in anaerobic reactor along adding pipeline 6, and the first lift pump 4 will complete biological denitrification in 4h.Anaerobic reactor 9 water outlets enter Using Hybrid Biofilm Reactor 17 through transport pipe 11, the second lift pump 12, aeration pump 19 is sent to aeration head 15 by pressurized air along aerating pipelines 20, by aeration head 15, gas dispersion is become to tiny bubble, air feed speed is controlled by spinner-type flowmeter 18, completes the aerobic nitrification stage in 10h.Using Hybrid Biofilm Reactor 17 water outlets enter in settling tank 22 by overflow spout 21, in 1h, complete precipitation, supernatant liquor is discharged by supernatant liquor discharge pipe line 24, settling tank 22 bottom mud enter in anaerobic reactor 9 by sludge return pipe 25, the second reflux pump 26, to supplement the loss of mud.
Utilize after said apparatus operation, ammonia nitrogen average removal rate is more than 97.1%, and its effect can be referring to Fig. 3.
Claims (9)
1. a method of using high slat-containing wastewater biological denitrificaion treatment unit to carry out the processing of high slat-containing wastewater biological denitrificaion, is characterized in that,
Described high slat-containing wastewater biological denitrificaion treatment unit comprises that anaerobic reactor, Using Hybrid Biofilm Reactor, carbon source add groove, inlet flume and settling tank;
Described inlet flume is connected with anaerobic reactor by suction culvert, is provided with the first lift pump on suction culvert;
Described carbon source is added groove and is connected with anaerobic reactor by adding pipeline, is provided with peristaltic pump adding on pipeline;
In described anaerobic reactor, be provided with the first heating and temperature controlling device and paddle wheel, paddle wheel is connected with the agitator outside anaerobic reactor;
Described anaerobic reactor is connected with Using Hybrid Biofilm Reactor by transfer line, is provided with the second lift pump on transfer line; In Using Hybrid Biofilm Reactor, be provided with the second heating and temperature controlling device, biologic packing material and aeration head, aeration head is connected with the aeration pump outside Using Hybrid Biofilm Reactor by aerating pipelines, and aerating pipelines is provided with spinner-type flowmeter;
Between Using Hybrid Biofilm Reactor and anaerobic reactor, be connected with the return line with the first reflux pump; Using Hybrid Biofilm Reactor is also connected with settling tank by overflow spout; On settling tank, be also connected with supernatant liquor escape route, settling tank bottom is provided with the emptying pipeline with exhaust-valve, is connected with sludge reflux pipeline between emptying pipeline and anaerobic reactor, and sludge reflux pipeline is provided with the second reflux pump;
The method steps that described high slat-containing wastewater biological denitrificaion is processed is as follows:
(1) mud sample is inoculated into respectively in anaerobic reactor, Using Hybrid Biofilm Reactor, settling tank, and keeps the volatile solid thing VSS of suitable concn; Described mud sample is taken from the mud in saltern, saltings or salt lake, and salinity is 0.5～10%;
(2) postvaccinal mud sample is carried out to activation culture, biologic packing material is put into Using Hybrid Biofilm Reactor, close peristaltic pump, the first lift pump, open the second reflux pump, the first reflux pump; In anaerobic reactor, add liquid nutrient medium A every day, in Using Hybrid Biofilm Reactor, settling tank, add liquid nutrient medium B, finally make volatile sludge concentration VSS>=2000mg/L in above-mentioned three devices; Described liquid nutrient medium A is: 1gKNO
3, 1gKNO
2, 0.2gMgSO
47H
2o, 0.1g (NH
4)
6mO
7o
244H
2o, 0.5gK
2hPO
4, 10g C
6h
12o
6, 0.5g peptone, distilled water 1000mL; Described liquid nutrient medium B is: 1g urea, 1gNa
2cO
3, 0.2gMgSO
47H
2o, 0.1g (NH
4)
6mO
7o
244H
2o, 0.5g K
2hPO
4, 10g C
6h
12o
6, 0.5g peptone, distilled water 1000mL;
(3) in inlet flume, add simulation ammonia nitrogen waste water, and add the brine waste that industrial sodium-chlor is mixed with applicable concentration, as the former water inlet of aftertreatment device; The mass concentration of simulation ammonia nitrogen waste water is 50mg/L～350mg/L; Described ammonia nitrogen waste water is formulated by urea or ammonium chloride or ammonium sulfate or its mixture;
(4) with the first lift pump, the waste water in inlet flume is entered to anaerobic reactor along suction culvert, be suspended liquid-phase mixing with the mud in the Using Hybrid Biofilm Reactor refluxing by return line, the first reflux pump; Open peristaltic pump, the carbon source that carbon source is added in groove enters in anaerobic reactor along adding pipeline, in the hydraulic detention time of setting, completes biological denitrification; The temperature of the first heating and temperature controlling device and the second heating and temperature controlling device maintains at 20 ℃～45 ℃;
The water outlet of anaerobic reactor enters Using Hybrid Biofilm Reactor through transfer line, the second lift pump, aeration pump is sent to aeration head by pressurized air along aerating pipelines, by aeration head, gas dispersion is become to tiny bubble, air feed speed is controlled by spinner-type flowmeter, in the hydraulic detention time of setting, completes the aerobic nitrification stage;
(6) Using Hybrid Biofilm Reactor water outlet enters in settling tank by overflow spout, within the time of setting, complete precipitation, supernatant liquor is discharged by supernatant liquor escape route, and settling tank bottom mud enters in anaerobic reactor by sludge reflux pipeline, the second reflux pump, supplements in right amount mud;
(7) as ready line number, after the cycle, changes original simulation ammonia nitrogen waste water in inlet flume into actual high saliferous industrial sewage, then moves according to step (4)-(6).
2. method according to claim 1, is characterized in that: in step (1), volatility is the concentration >=500mg/L of suspended substance fixedly.
3. method according to claim 1, it is characterized in that: in step (3), with certain concentration gradient, add simulation ammonia nitrogen waste water, concrete grammar is as follows: it is 50mg/L that the initial stage adds ammonia nitrogen mass concentration, when stablize≤15mg/L of water outlet ammonia nitrogen concentration, improve gradually ammonia nitrogen concentration, each amplitude improving is 5mg/L～20mg/L, and it is 350mg/L that final ammonia nitrogen adds mass concentration.
4. method according to claim 1, is characterized in that: in step (3), in inlet flume, brine waste mass concentration is 15g/L～75g/L.
5. method according to claim 1, is characterized in that: in step (4), carbon source is added the carbon source in groove, is formulated by glucose or methyl alcohol or sodium acetate.
6. method according to claim 1, is characterized in that: in step (4), the hydraulic detention time of biological denitrification is 2～8h; In step (5), the hydraulic detention time 8～24h of biological nitration; Hydraulic detention time 1h～the 4h of settling tank in step (6).
7. method according to claim 1, is characterized in that: in step (3), and while adding simulation ammonia nitrogen waste water in inlet flume, repeating step (3)～step (6), the cycle of operation is 10～40 times.
8. method according to claim 1, is characterized in that: in step (7), in inlet flume, simulates ammonia nitrogen waste water and changes into after actual high slat-containing wastewater, and repeating step (4)～step (6), the cycle of operation is 5～20 times.
9. method according to claim 1, is characterized in that: described biologic packing material is lint bulk filler, and bed stuffing height accounts for 40～80% of Using Hybrid Biofilm Reactor total height; Described lint bulk filler is the lint bulk hanging filler that soft plastics or fiber are made, and single filler diameter is 150mm～250mm, and it is 50mm～150mm that filler hangs spacing.
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| CN103540555A (en) * | 2013-11-05 | 2014-01-29 | 中蓝连海设计研究院 | Method for preparing salt-tolerant microbial agent |
| NO338103B1 (en) * | 2014-05-14 | 2016-08-01 | Yara Int Asa | Use of a group of halophilic and / or halotolerant bacteria in a biochemical process for denitrification of a hypersaltic waste mixture. |
| CN105084558A (en) * | 2015-09-11 | 2015-11-25 | 中蓝连海设计研究院 | Method for treating high-salt wastewater by using halophilic microorganisms |
| CN109384306A (en) * | 2017-08-02 | 2019-02-26 | 中国石油化工股份有限公司 | A kind of high calcium high-salt sewage denitrogenation takes off the treatment process of COD |
| CN108751423A (en) * | 2018-05-07 | 2018-11-06 | 湖南凯涛环保科技有限公司 | The efficient liquid sodium acetate carbon source of ammonia nitrogen in a kind of degrading waste water |
| CN110467262A (en) * | 2019-08-22 | 2019-11-19 | 中国能源建设集团广东省电力设计研究院有限公司 | A kind of novel sewage treatment unit |
| CN111606410A (en) * | 2020-06-12 | 2020-09-01 | 天津德鑫石化设备有限公司 | High salt denitrification test device that contains |
| CN114105294B (en) * | 2021-10-28 | 2023-09-22 | 苏州水星环保工业***有限公司 | Construction and use method of high-salt high-ammonia-nitrogen organic wastewater biological treatment system |
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