CN204342508U - A kind of device realizing biological filter Anammox fast - Google Patents
A kind of device realizing biological filter Anammox fast Download PDFInfo
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- CN204342508U CN204342508U CN201420627745.6U CN201420627745U CN204342508U CN 204342508 U CN204342508 U CN 204342508U CN 201420627745 U CN201420627745 U CN 201420627745U CN 204342508 U CN204342508 U CN 204342508U
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Abstract
Realize a device for biological filter Anammox fast, belong to technical field of sewage.Comprise round tube type reaction unit, inlet chest, aeration plate, water leg, back flushing water inlet pipe, back flushing rising pipe, backwash pump, back flushing inlet pipe, tensimeter; The temperature of whole reaction process is controlling at 30-33 DEG C; The ratio of ammonia nitrogen and nitrite nitrogen is 1:1.32; Controlling System filtering velocity is 1.5-2.0m/h; And the backwashing period passed through based on pressure value variation characteristic point control Anammox biological filter and intensity.The utility model has and is conducive to controlling water body nitrate pollution cost-effectively, improves sewage deep nitric efficiency and quality of reused water.
Description
Technical field
The utility model relates to a kind of quick implement device of nitrogenous effluent biological treatment, and can save the oxygen-supplying amount of about 62.5%, the additional carbon of 100% compared with-denitrification denitrogenation technique nitrated with tradition, sludge yield can reduce 70 ~ 80%.Be applicable to the advanced treatment of sludge-digestion liquid, percolate and sewage work's secondary water, be conducive to controlling water body nitrate pollution cost-effectively, improve sewage deep nitric efficiency and quality of reused water, and reduce reuse water processing cost, belong to technical field of sewage.
Background technology
Along with socioeconomic develop rapidly, environmental problem also receives the concern of the mankind day by day, wherein the eutrophication of water body (refers under the impact of mankind's activity, the nutritive substances such as the nitrogen needed for biology, phosphorus enter the slow flow water bodies such as lake, river mouth, bay in a large number, algae and other planktonic organisms is caused to breed rapidly, Dissolved Oxygen in Water amount declines, water quality deterioration, the phenomenon of fish and other biological mortality) cause the great attention of people gradually.Biological nitrification and denitrification is the sewage denitrification method generally adopted at present.Tradition nitrification is carried out in two steps.First, ammonia nitrogen is converted into nitrite under the effect of ammonia oxidation bacteria (AOB); Subsequently, nitrite is converted into nitrate by nitrite-oxidizing bacterium (NOB).Denitrification be anoxic and there is organic carbon source condition under, be nitrite by nitrate reduction by denitrifying bacteria and be reduced to nitrogen further.But when processing low ammonia nitrogen waste water (as some is based on the municipal effluent of resident living sewage), due to reasons such as carbon source deficiency or fluctuating temperatures, nitric efficiency is lower.
Anaerobic ammonium oxidation technology for biological denitrification is under anaerobic, and ammonia oxidation for electron acceptor(EA), is directly generated the process of nitrogen with nitrite nitrogen or nitrate nitrogen by anaerobic ammonia oxidizing bacteria.Compared with traditional nitration denitrification technique or simultaneous nitrification-denitrification technique, Anammox is autotrophic microorganism process, and have do not need additional organic carbon source, sludge yield few, do not need aeration, save working cost, do not need the advantages such as acid-base neutralisation agent, non-secondary pollution, be applicable to the process of low ratio of carbon to ammonium waste water.Realize Anammox raising nitric efficiency, the saving energy and carbon source are had great importance, but the application of this technique at present focuses mostly in the process problem of high ammonia-nitrogen wastewater, for sanitary sewage or the municipal effluent process of the low C/N ratio of process, not yet there is the effective method realizing Anammox advanced nitrogen.
Biological filter is the traditional technology that biomembrance process is disposed of sewage, and grows up, prior to activated sludge process 19 end of the centurys.Biological filter has that microbe species is abundant, biomass large, food chain length, excess sludge production are few, etc. advantage, be applicable to sewage of low concentration process, but up to the present still not very clear to biological filter pollutant removal mechanism, fail to give full play to its process potentiality; How strengthening the problems such as its biological action further does not also carry out the deep research of system simultaneously.Therefore Fast implementation and the stability problem of studying Anammox biological filter have important theory significance and application prospect.
Utility model content
The purpose of this utility model is to provide a kind of device realizing biological filter Anammox fast, by applying the various regulate and control method being conducive to realizing Anammox biological filter, provide optimum environmental control parameters, reach the effect realizing Anammox biological filter advanced nitrogen fast.
Realize a device for biological filter Anammox fast, it is characterized in that, comprise round tube type reaction unit, inlet chest, aeration plate, water leg, back flushing water inlet pipe, back flushing rising pipe, backwash pump, back flushing inlet pipe, tensimeter, the outside of round tube type reaction unit (18) is one deck water bath heating device (17), is provided with heating rod in water bath heating device, and heating rod is connected the temperature for controlling heating in water bath with outside temperature control unit (6), the side of round tube type reaction unit is provided with the thief hole (14) on multiple outstanding water bath heating device surface, round tube type reaction unit is provided with reactor filter material layer in (18), tensimeter P1 and P2 is separately installed with at the top of reactor filter material layer and bottom, the bottom of round tube type reaction unit (18) is bottom device, the bottom of bottom device is provided with aeration plate, bottom device is communicated with round tube type reaction unit (18), the top of round tube type reaction unit (18) is provided with effluent trough (19), the top of effluent trough (19) has venting port (9), effluent trough (19) is connected with water tank/back flushing inlet chest (15) by rising pipe (16), water tank/back flushing inlet chest (15) by back flushing water inlet pipe (13) via backwash pump (12), first glass rotameter (11), valve is communicated with bottom device, effluent trough (19) is connected with back flushing water tank (7) by back flushing rising pipe (8), air compressor (2) is communicated with bottom device via the second glass rotameter, valve by back flushing inlet pipe (10), inlet chest (1) is communicated with bottom device with inlet valve via water inlet peristaltic pump (4) by water inlet pipe (3).
The filtrate of reactor filter material layer is swelling clay, preferred FILTRALITE HR3-6mm (Norway, swelling clay).
The utility model adopts said apparatus to carry out the method for biological filter Anammox advanced nitrogen, be characterised in that, adopt the operation scheme of continuum micromeehanics, the anaerobic ammonium oxidation sludge that the inoculation of reactor filter material layer is ripe, pending secondary water (short distance nitration-denitrification water outlet) is flow through filter bed with 1.5-2m/h filtering velocity, in whole reaction process, in Controlling System, temperature remains within the scope of 30-33 DEG C all the time, and detailed process comprises the steps:
Ripe anaerobic ammonium oxidation sludge is inoculated in biological filter, regulate pending secondary water, make influent ammonia nitrogen in secondary water: nitrite nitrogen mass concentration ratio maintains 1:1.32, with water inlet peristaltic pump by secondary water to be pumped in cylinder reactor from bottom device, make it by reactor filter material layer, under the effect of anaerobic ammonia oxidizing bacteria, ammonia-state nitrogen and nitrite nitrogen react and generate nitrogen, discharge from reactor head venting port, purify waste water from rising pipe and discharge;
Concrete operation step is:
1) unloading phase: by topped up with water in the water bath sleeve of reactor water bath heating device, open temperature control unit, temperature controls at 30-33 DEG C; Anaerobic ammonium oxidation sludge is pumped into reactor filter material layer from reactor thief hole; Open inlet valve, open into water peristaltic pump, at least make water fill up cylinder reactor, general adjustment makes filtering velocity maintain 0.5-1m/h, runs 3d, enters into normal operating phase;
2) normal operating phase: open inlet valve, then open into water peristaltic pump, adjusting rotary speed makes filtering velocity maintain 1.5-2.0m/h, pending secondary water enters into biological filter continuously by reactor bottom, by filter material layer, under the effect of anaerobic ammonia oxidizing bacteria, ammonia-state nitrogen and nitrite nitrogen react and generate nitrogen, discharge from reactor head venting port, purify waste water from water outlet and be disposed to water tank;
3) the back-flushing operation stage: bottom pressure difference in reactor filter material layer system and reactor filter material layer and when the pressure difference P at top is more than or equal to 1.6P Θ, i.e. P=P2-P1>=1.6P
Θtime, wherein P
Θfor the water pressure at bottom reactor filter material layer before the non-seed sludge of filtrate and top is poor, close inlet valve and peristaltic pump, carry out back flushing, pattern is: advanced promoting the circulation of qi punching, then air water combines punching, then carries out water punching, and in layer system to be filtered, pressure is 1.2P
Θ≤ P≤1.6P
Θ, stop water punching, otherwise air water should be continued combine punching;
4) back flushing is back to step 2 after terminating), i.e. normal operating phase.
The realization condition of denitrification of anaerobic ammonium oxidation technique is formation and the optimization of anaerobic ammonium oxidizing bacteria Bacterial community in itself, namely eliminate other bacterial classification (as ammonia oxidation bacteria, NOB, heterotrophic bacterium) in system as far as possible, retain anaerobic ammonium oxidizing bacteria.
The method realizing biological filter Anammox advanced nitrogen fast provided by the utility model is by raising anaerobic ammonia oxidizing bacteria growth velocity, suppress other growth speed, namely to be conducive to most enrichment anaerobic ammonium oxidizing bacteria, to eliminate the combined factors of other bacterial classification together, specifically comprise:
1) temperature.Reactor assembly operating temperature is controlled, between 30-33 DEG C, be conducive to enrichment anaerobic ammonium oxidizing bacteria.Temperature is mainly played a role by the activity affecting microbe endoenzyme, more than 30 DEG C under temperature condition, the growth velocity of anaerobic ammonium oxidizing bacteria is greater than the growth velocity of nitrite-oxidizing bacteria and heterotrophic bacterium, runs under these conditions for a long time, is conducive to enrichment anaerobism ammonia ammonia oxidizing bacteria.
2)pH。Reactor assembly pH is controlled at 7.5-8.5, is conducive to the growth of anaerobic ammonium oxidizing bacteria.The impact of pH value on anaerobic ammonium oxidation process is mainly manifested in 2 aspects: 1pH value can affect intracellular electrolyte balance, and even can it survive directly to affect microbic activity; 2pH value also can affect the concentration of solution mesostroma or inhibition, and remote effect microbic activity.
3) organism.Inlet COD concentration is controlled at below 40mg/L, be conducive to enrichment anaerobic ammonium oxidizing bacteria.Anaerobic ammonia oxidizing bacteria belongs to autotroph, and its growth is without the need to the participation of organic carbon, but organism is as electron donor common in biological wastewater treatment, easy and cultured water generation anti-nitration reaction.Therefore, the organism of low concentration is little on anaerobic ammoxidation activity impact, and large amount of organic then can suppress anaerobic ammoxidation activity.
The utility model has following beneficial effect:
1) denitrification effect is good, ammonia nitrogen and nitrite nitrogen clearance reach more than 95%, total nitrogen is less than 5mg/L, in the pollution exhaust criteria of country's promulgation in 2002, be that water outlet ammonia nitrogen is less than 5mg/L, total nitrogen is less than 15mg/L to the emission standard that town sewage is the strictest, the pollution exhaust criteria that water outlet ammonia nitrogen of the present utility model and total nitrogen are promulgated far below country.
2) energy conservation and consumption reduction effects is good, because anaerobic ammonia oxidizing bacteria is autotrophic bacteria, directly using ammonia as electron donor in denitrification process, therefore reacts without the need to additional organic carbon source, both saves running cost, can prevent secondary pollution again.
3) nitrite nitrogen is the key electron acceptor(EA) of Anammox, the nitrated stage only need by
be oxidized to
, can subtract the oxygen-consumption of 62.5% like this, oxygen supply energy consumption declines to a great extent.
4) the product acid amount of anaerobic ammonia oxidation process greatly reduces, and produces alkali number and is more down to zero, can save a large amount of neutralization reagents.
5) generation time of anaerobic ammonium oxidizing bacteria is 10-13d, the sludge yield of technique is few, be only about 8% of traditional biological denitrification process sludge yield, virtually decrease expense and the environmental stress of mud subsequent disposal and disposal, and the Anammox biological filter backwashing period time is long, make the operational management of system more easy.
6) anaerobic ammonia oxidation process can have various ways, as SHARON-ANAMMOX, CANNON etc.
7) the utility model can be widely used in the process of Sludge Digestion in Wastewater Treatment Plant liquid, percolate, also has darker application prospect in the process of secondary water depth.
Accompanying drawing explanation
The testing apparatus of biological filter Anammox deep denitrification method is realized fast in Fig. 1, embodiment;
This device exterior configuration and equipment: this apparatus main body exterior configuration is cylindrical (there is one deck heating in water bath outside), 1 inlet chest; 2 air compressor; 3 water inlet pipes; 4 water inlet peristaltic pumps; 5 tensimeters; 6 temperature control units; 7 back flushing water tanks; 8 back flushing rising pipes; 9 venting ports; 10 back flushing inlet pipe; 11 glass rotameters; 12 backwash pumps; 13 backflushing water intake pipes; 14 thief holes; 15 water tanks/back flushing inlet chest; 16 rising pipes; 17 water bath heating devices; 18 round tube type reaction units; 19 effluent troughs.
Fig. 2 adopts embodiment 1 Process for Effluent design sketch.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, and single the utility model is not limited to following examples.
Fig. 1 between dress used.
Embodiment 1
Using the secondary effluent (short distance nitration-denitrification water outlet) after certain university's dependents' district process as experimental subjects.Anammox biological filter reactor useful volume 16L, with FILTRALITE HR3-6mm (Norway, swelling clay) (preferably) be filtrate, height of filter media layer is 1.2m, support floor height 0.2m, continuum micromeehanics, water inlet filtering velocity maintains 0.5m/h, influent ammonia nitrogen: nitrite nitrogen mass concentration ratio maintains 1:1.32
concentration is 18mg/L,
concentration is 24mg/L; Temperature of reaction is controlled within the scope of 30-33 DEG C by temperature control unit.
1) unloading phase: by topped up with water in reactor water bath sleeve, open temperature control unit, temperature controls at 30-33 DEG C; With peristaltic pump, ripe anaerobic ammonium oxidation sludge to be seeded is pumped into reactor filter material layer from reactor thief hole; Open inlet valve, open 4-water inlet peristaltic pump, adjusting rotary speed makes filtering velocity maintain 0.5m/h, enters into the stage 2, i.e. normal operating phase after running 3d;
2) normal operating phase: open inlet valve, then 4-water inlet peristaltic pump is opened, adjusting rotary speed makes filtering velocity maintain 1.5-2.0m/h, pending secondary water enters into biological filter continuously by reactor bottom, by filter material layer, under the effect of anaerobic ammonia oxidizing bacteria, ammonia-state nitrogen and nitrite nitrogen react and generate nitrogen, discharge from reactor head 9-venting port, after purification, water outlet is disposed to 15-water tank from 16-rising pipe;
3) the back-flushing operation stage: when in reactor filter material layer system, pressure is more than or equal to P=P2-P1>=1.6P
Θ(P
Θ: the differential water pressures at bottom filter material layer and top before the non-seed sludge of filtrate) time, carry out back flushing: 1) gas punching: first close inlet valve and 4-water inlet peristaltic pump, second thief hole draining (now height the rising higher than filter material layer of second thief hole) from reactor top, stops draining when liquid level reaches second thief hole; Open back flushing air intake valve and 2-air compressor, regulate glass rotameter, aeration rate is 10-20L/min (preferred 15L/min), maintains 2min; 2) gas punching+water punching: open 12-back flushing intake pump again, back flushing inlet valve, regulate glass rotameter, flow is 200-400L/h (preferred 300L/h), maintains 3min; 3) water punching: close back flushing air intake valve and 2-air compressor, glass rotameter is regulated to make water swash of wave amount be that (the water swash of wave amount that general water rushes the stage is greater than the water swash of wave amount that gas punching+water rushes the stage to 400-500L/h, preferred 400L/h), in layer system to be filtered, pressure is 1.2P
Θ≤ P≤1.6P
Θ, close 12-back flushing intake pump and back flushing inlet valve, back flushing terminates.
4) back flushing is back to step 2 after terminating, i.e. normal operating phase.
Above-mentioned Process for Effluent effect is adopted to see Fig. 2.
Claims (3)
1. realize a device for biological filter Anammox fast, it is characterized in that, comprise round tube type reaction unit, inlet chest, aeration plate, water leg, back flushing water inlet pipe, back flushing rising pipe, backwash pump, back flushing inlet pipe, tensimeter, the outside of round tube type reaction unit (18) is one deck water bath heating device (17), is provided with heating rod in water bath heating device, and heating rod is connected the temperature for controlling heating in water bath with outside temperature control unit (6), the side of round tube type reaction unit is provided with the thief hole (14) on multiple outstanding water bath heating device surface, round tube type reaction unit is provided with reactor filter material layer in (18), tensimeter P1 and P2 is separately installed with at the top of reactor filter material layer and bottom, the bottom of round tube type reaction unit (18) is bottom device, the bottom of bottom device is provided with aeration plate, bottom device is communicated with round tube type reaction unit (18), the top of round tube type reaction unit (18) is provided with effluent trough (19), the top of effluent trough (19) has venting port (9), effluent trough (19) is connected with water tank/back flushing inlet chest (15) by rising pipe (16), water tank/back flushing inlet chest (15) by back flushing water inlet pipe (13) via backwash pump (12), first glass rotameter (11), valve is communicated with bottom device, effluent trough (19) is connected with back flushing water tank (7) by back flushing rising pipe (8), air compressor (2) is communicated with bottom device via the second glass rotameter, valve by back flushing inlet pipe (10), inlet chest (1) is communicated with bottom device with inlet valve via water inlet peristaltic pump (4) by water inlet pipe (3).
2. according to the device of claim 1, it is characterized in that, the filtrate of reactor filter material layer is swelling clay.
3. according to the device of claim 1, it is characterized in that, the filtrate FILTRALITE HR3-6mm of reactor filter material layer.
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| CN201420627745.6U CN204342508U (en) | 2014-10-27 | 2014-10-27 | A kind of device realizing biological filter Anammox fast |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104355404A (en) * | 2014-10-27 | 2015-02-18 | 北京工业大学 | Method and device for rapidly realizing anaerobic ammonia oxidation of bacteria filter |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104355404A (en) * | 2014-10-27 | 2015-02-18 | 北京工业大学 | Method and device for rapidly realizing anaerobic ammonia oxidation of bacteria filter |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150520 Termination date: 20201027 |
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| CF01 | Termination of patent right due to non-payment of annual fee |