CN105130126A - New method of urban sewage treatment - Google Patents
New method of urban sewage treatment Download PDFInfo
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- CN105130126A CN105130126A CN201510579974.4A CN201510579974A CN105130126A CN 105130126 A CN105130126 A CN 105130126A CN 201510579974 A CN201510579974 A CN 201510579974A CN 105130126 A CN105130126 A CN 105130126A
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Abstract
The invention discloses a new method of urban sewage treatment. The method comprises the following steps: 1, sewage enters into a coarse screen well to remove a large volume of pollutants; 2, fine screens of a fine screen well intercept impurities and large particulate matters in the sewage; 3, sediments in the sewage are deposited by a grit chamber; 4, sludge in a secondary sedimentation tank flows backs to the front end of a biochemical pool group, and bacterial flora taking genus bacillus microorganisms as dominant bacteria is added into the biochemical pool group; 5, effluent water of the biochemical pool group flows into the secondary sedimentation tank, and sludge-water separation is performed in the secondary sedimentation tank; 6, effluent water of the secondary sedimentation tank flows into a disinfection system and is discharged by a water metering tank. By adopting the technical scheme of the invention, due to the fact that the bacterial flora taking the genus bacillus microorganisms as the dominant bacteria is added into the biochemical pool group so as to achieve the following beneficial effects that the capability of nitrogen and phosphorus removal is efficient, no extra deodorization system is needed, the cost of investment is greatly reduced, energy conservation and space saving are realized, and the discharged water quality is good.
Description
Technical field
The present invention relates to technical field of sewage, in particular to a kind of novel method of municipal sewage treatment.
Background technology
City domestic sewage is mainly from family, business and urban public utilities etc.Organism is the principal pollutant of sanitary sewage, such as: starch, protein, carbohydrate and mineral wet goods.The chemical oxygen demand (COD) of city domestic sewage, biological oxygen demand, total nitrogen and total phosphorus content are all relatively high.When nitrogen content and the higher water quality of phosphorus content enter nature, easily cause the eutrophication of water body, cause algae raised growth to breed, so that water quality deterioration, contaminate environment, can cause red tide and wawter bloom time serious.
For sanitary sewage, the main biological process that adopts processes both at home and abroad at present.Biological process mainly comprises activated sludge process, the large class of biomembrance process two, wherein again based on activated sludge process.Activated sludge process has a variety of pattern, comprises conventional activated sludge process, adsorption biodegradation, SBR and modification technique thereof, oxidation ditch process, A/O technique etc.
Traditional activated sludge process technique: use technique the earliest, the efficiency of its organics removal is very high, the mud that produces in treating processes adopts anaerobic digestion mode to carry out stabilizing treatment, and the pollution offseted except sewage and mud is very effective, and energy consumption and working cost all lower.But it is not high to the removal efficiency of nitrogen, phosphorus, and easy temperature influence.The optimal temperature of nitration reaction is 20 ~ 30 DEG C, and when temperature is lower than 15 DEG C, nitration reaction speed obviously declines, and stops completely when 5 DEG C.
A
2o technique: at present apply a kind of more method in biological dephosphorize denitrification technique, belong to simultaneous phosphorus and nitrogen removal technique, utilize anaerobism, anoxic, aerobicly realize organic degraded, first raw waste water enters anaerobic zone, is converted into small molecules tunning.Waste water enters oxygen-starved area subsequently, reaches the object of carbon elimination and denitrogenation simultaneously.Release energy and can supply growth and breeding own, absorb the dissolved phosphorus in surrounding environment, organism is behind anaerobic zone, oxygen-starved area, and concentration is quite low.A
2/ O technique total hrt is higher than other similar technique, anaerobism, anoxic and aerobic three districts strictly separate, be conducive to different microorganisms flora ground flourish, but obviously decline at water temperature less than 12 DEG C Nitrogen/Phosphorus Removals, sewage at biochemical section hydraulic detention time at 14 ~ 20 hours, water temperature also needs to increase hydraulic detention time and advanced treatment denitrogenation 12 DEG C time, water temperature denitrogenation about 8 DEG C time cannot ensure to stablize and reach " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) one-level A standard T-N=15mg/L, system gross investment is relatively high, return sludge ratio is 0.2Q ~ 1Q, return current ratio of the mixed liquid is for being greater than 2Q, reflux ratio is higher.
AB method technique: twice biochemical treatment adopting absorption regeneration and traditional activated sludge process, technique unit forms more complicated, and mud is unstable, construction investment and processing cost high.This method is the treatment process of the special occasions designed for high concentration sewage water.
Oxidation ditch process: oxidation ditch has another name called oxidation canal, the planeform of ditch body ringwise, rectangle, L shape, circle or other shapes, there is unique hydraulics characteristic and performance characteristics.Compare with traditional activated sludge process, oxidation ditch process obviously can save preliminary sedimentation tank and sludge digestion tank, and flow process is simplified, and effluent quality is than good in the past, and operation enterprise is also more convenient, and working cost also compares saving.Oxidation ditch utilizes continuous ring type reaction tank to make biological reaction tank, provide very large extension rate and improve surge capability, be generally several times and even the decades of times of wastewater influent flow, the residence time of water in ditch is longer, also has good processing power to the organism of not easily degrading.China also in succession adopts all kinds of municipal effluent of this art breading from the eighties in 20th century, achieves good effect.And development and evolution becomes various ways in practice, as T-shaped oxidation ditch and DE type oxidation ditch, Orbal oxidation ditch.T-shaped three working position collection anoxic, aerobic and be deposited in one, hocket reaction and precipitation, and flow process is succinct, has biological denitrificaion function.Carrousel oxidation ditch has the characteristic of mixing and plug-flow completely concurrently, and does not need mixed-liquor return system, but the depth of water is unsuitable excessive, and power efficiency of oxygen supply is low, does not possess denitrogenation dephosphorizing function.
SBR technique: it is that sewage in continuous flow process is introduced into reaction tank that conventional SBR method is disposed of sewage, forms anaerobism, anoxic during water inlet, then enters settling tank mud-water separation, aeration aerating, complete denitrogenation dephosphorizing process, and precipitate in same container.This method does not need returned sluge, without special anaerobic zone, oxygen-starved area, aerobic zone, carry out at times stirring, aeration, precipitation, form anaerobism, anoxic, aerobic processes, sedimentation function is good, and organic matter removal efficiency is high, improves the processing efficiency of used water difficult to degradate, suppress filamentary discharges, do not need second pond and sludge reflux, technique simple.Be applicable to medium and small sewage work.Along with updating of SBR method, SBR method develops into multiple modified form: ICEAS method, CAST method, Unitank method and MSBR method.This several method and conventional SBR method difference are, by arranging many ponds, to operate in turn, batch process.Though this several method has its advantage, every pond all needs to install aerator, and head loss is large, and plant factor is low, and investment is large.
Biological contact oxidation process technique: this process management is simpler, energy-conservation, also applied widely in China, this technique adopts contact-oxidation pool, the whole filler of sewage submergence of oxygenation, pass through aeration, under the effect of bacteria metabolism, dirty Organic substance in water is removed, and it is obvious that sewage is purified removal effect.Advantage is: in pond, aerobic condition is good, can reach higher volumetric loading, does not need to establish sludge recirculation system, there is not sludge bulking problem, and operational management is simple, has stronger applicable ability to the change of water quality and quantity.The main drawback of biological contact oxidization treatment technology is: by the restriction of design variable and processing set-up, filler as improper in design and operation may block, and water distribution aeration is not easily even in addition, may occur dead angle in local.This oxidation style is only applied at present in trade effluent or small-scale sanitary wastewater.
In sum, there is following problem in existing technology: the clearance of nitrogen, phosphorus is not high, and floor space is large, power consumption is high.Nitrogen, phosphorus ligands process are complicated, generally need to relate to that microorganism is nitrated, denitrification, release phosphorus and inhale the processes such as phosphorus.The clearance of traditional activated sludge process to nitrogen and phosphorus is very low, therefore improve at traditional activated sludge process, by extending aeration time, reduce the methods such as load operation and improve denitrification ability, but floor space and power consumption certainly will be added, when system water inlet carbon-nitrogen ratio≤2.86, system needs to add carbon source, technical process will certainly be extended, increase running cost, due to the characteristic of quantitative limitation biological in activated sludge process and polyP bacteria, phosphor-removing effect is also not obvious, especially winter is when temperature is lower than 12 DEG C, nitration reaction speed obviously declines, system processing power sharply reduces, Nitrogen/Phosphorus Removal is poor, the main drawback of biological contact oxidization treatment technology is: by the restriction of design variable and processing set-up, the improper filler of operation of living as designed may block, in addition water distribution aeration is not easily even, may occur dead angle in local, the method is only applied at present in trade effluent or small-scale sanitary wastewater.
Summary of the invention
The present invention aims to provide a kind of novel method of municipal sewage treatment, and not high with the clearance solving nitrogen under low temperature in prior art sewage disposal, floor space is large, power consumption is high, to temperature requirement comparatively high-technology problem.
To achieve these goals, according to an aspect of the present invention, a kind of novel method of municipal sewage treatment is provided.The method comprises the following steps: the first step: sewage enters the pollution substance that large volume removed by coarse rack well; Second step: the water outlet of coarse rack well flows into sewage lifting pump sump, then is promoted to fine fack well from sewage lifting pump sump through lift pump, the fine fack interception impurities in water of fine fack well and large particulate matter; 3rd step: the water outlet of fine fack well flows into settling pit, and the precipitate in water is got off by settling pit; 4th step: the water outlet of settling pit flows into the biochemistry pool group of second-stage treatment, and second pond sludge reflux is to the front end of biochemistry pool group, and the quantity of reflux of second pond mud is 0 ~ 1Q, adding in biochemistry pool group with bacillus micro-organism is the flora of dominant bacteria; 5th step, the water outlet of biochemistry pool group flows into second pond, and in second pond, carry out mud-water separation, part second pond mud is back to the front end of biochemistry pool group through sludge reflux pump, second pond residual sludge pump is to sludge treating system process; 6th step: secondary clarifier effluent is discharged through water outlet scale tank after flowing into sterilisation system.
Further, bacillus micro-organism comprises one or more in the group be made up of solid Ammonia genus bacillus, Bacillus mucilaginosus, bacillus amyloliquefaciens, bacillus laterosporus, subtilis, Bacillus licheniformis, bacillus cereus, bacillus thuringiensis, bacillus megaterium, bacillus polymyxa, bacillus amyloliquefaciens and bacillus pumilus.
Further, in biochemistry pool group, effectively flora number remains on 10
8~ 10
9individual.
Further, be provided with nutritive medium throwing device in biochemistry pool group, add nutritive medium by nutritive medium throwing device in biochemistry pool group, nutritive medium contains Si, Mg, Mn, Ca, Fe, Al, Ti, Zn, Rb, Sr, Na, Zr, K, P and S element.
Further, the nutritive medium added in biochemistry pool group is 1: 0.00000004 ~ 1: 0.00000008 with water inlet volume ratio; Nutritive medium comprises tropical fresh fruit, edible ethanol and pure mountain spring water.
Further, the mesh of the coarse rack of coarse rack well is 25 ~ 100mm; The mesh of fine fack is 1.5 ~ 25mm.
Further, biochemistry pool group comprises anaerobic pond, anoxic pond and Aerobic Pond.
Further, by Aeration fan to biochemistry pool group air feed, tracheae valve is regulated to make the dissolved oxygen content of the Aerobic Pond of biochemistry pool group keep 0.1 ~ 1.2mg/L.
Further, sludge treating system comprises sludge dewatering equipment.
Further, sterilisation system is UV disinfection system.
Apply technical scheme of the present invention, be the flora of dominant bacteria owing to adding with bacillus micro-organism in biochemistry pool group, following beneficial effect can be reached: 1) denitrogenation dephosphorizing ability efficiently; 2) extra deodoration system is not needed; 3) significantly cost of investment is reduced; 4) energy-conservation, saving is taken up an area; 5) water quality is discharged good; Municipal wastewater through the inventive method process can reach " urban wastewater treatment firm pollutant emission standard " one-level A standard.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the schematic flow sheet of method for the treatment of city waste water in prior art; And
Fig. 2 shows the schematic flow sheet of the novel method of the municipal sewage treatment according to the embodiment of the present invention 1.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
Have the clearance of nitrogen under sewage disposal low temperature in technology not high, floor space is large, power consumption is high, higher to temperature requirement, and this present invention proposes following technical scheme to these technical problems.
According to a kind of typical embodiment of the present invention, provide a kind of novel method of municipal sewage treatment.This novel method comprises the following steps: the first step: sewage enters the pollution substance that large volume removed by coarse rack well; Second step: the water outlet of coarse rack well flows into sewage lifting pump sump, then is promoted to fine fack well from sewage lifting pump sump through lift pump, the fine fack interception impurities in water of fine fack well and large particulate matter; 3rd step: the water outlet of fine fack well flows into settling pit, and the precipitate in water is got off by settling pit; 4th step: the water outlet of settling pit flows into the biochemistry pool group of second-stage treatment, and second pond sludge reflux is to the front end of biochemistry pool group, and the quantity of reflux of second pond mud is 0 ~ 1Q, adding in biochemistry pool group with bacillus micro-organism is the flora of dominant bacteria; 5th step, the water outlet of biochemistry pool group flows into second pond, and in second pond, carry out mud-water separation, part second pond mud is back to the front end of biochemistry pool group through sludge reflux pump, second pond residual sludge pump is to sludge treating system process; And the 6th step: secondary clarifier effluent is discharged through water outlet scale tank after flowing into sterilisation system.
The pollution substance that coarse rack well described in the first step of the present invention removes " large volume " is for the pollution substance that fine fack well is removed, and " large particulate matter " that in second step, fine fack well is removed is " large particulate matter " for the material grains of settling pit precipitation.In 4th step, " second-stage treatment " refers to sewage second-level process, be sewage after coagulation, then through having the aeration tank of active sludge and the process of settling tank, make the technological process that sewage purifies further.Refluxed by biochemistry pool group end and second pond partial sludge so far to carry out mixing reprocessing in the front end of biochemistry pool group.
In fact, disclosed by the invention is exactly a kind of novel method utilizing genus bacillus Treating Municipal Sewage, according to a kind of typical embodiment of the present invention, briefly mainly comprise the following steps: sewage is discharged through city planting ductwork → coarse rack well → sewage lifting pump sump → fine fack well → settling pit → biochemistry pool group (genus bacillus) → second pond → sterilisation system → scale tank.
Apply technical scheme of the present invention, be the flora of dominant bacteria owing to adding with bacillus micro-organism in biochemistry pool group, following beneficial effect can be reached: 1) denitrogenation dephosphorizing ability efficiently; 2) extra deodoration system is not needed; 3) significantly cost of investment is reduced; 4) energy-conservation, saving is taken up an area; 5) water quality is discharged good; Municipal wastewater through the inventive method process can reach " urban wastewater treatment firm pollutant emission standard " one-level A standard.
Preferably, bacillus micro-organism comprises one or more in the group be made up of solid Ammonia genus bacillus, Bacillus mucilaginosus, bacillus amyloliquefaciens, bacillus laterosporus, subtilis, Bacillus licheniformis, bacillus cereus, bacillus thuringiensis, bacillus megaterium, bacillus polymyxa, bacillus amyloliquefaciens and bacillus pumilus.These microorganisms not only have the unique advantage of low temperature, and efficiencies of nitrogen removal is good.
Preferably, in biochemistry pool group, effectively flora number remains on 10
8~ 10
9individual, be so more conducive to ensureing microorganism efficiencies of nitrogen removal at low temperatures.
According to a kind of typical embodiment of the present invention, nutritive medium throwing device is provided with in biochemistry pool group, in biochemistry pool group, nutritive medium is added by nutritive medium throwing device, nutritive medium contains Si, Mg, Mn, Ca, Fe, Al, Ti, Zn, Rb, Sr, Na, Zr, K, P and S element, to ensure that the normal growth of microorganism is in breeding.
Preferably, the nutritive medium added in biochemistry pool group is 1: 0.00000004 ~ 1: 0.00000008 with water inlet volume ratio.Nutritive medium comprises tropical fresh fruit, edible ethanol and pure mountain spring water, its ratio and composition those skilled in the art can adjust according to practical situation, as long as the good growth of bacillus micro-organism can be made namely, thus ensure the removal of coherent element in sewage.
According to a kind of typical embodiment of the present invention, the mesh of the coarse rack of coarse rack well is 25 ~ 100mm; The mesh of fine fack is 1.5 ~ 25mm.
According to a kind of typical embodiment of the present invention, biochemistry pool group comprises anaerobic pond, anoxic pond and Aerobic Pond.
Preferably, by Aeration fan to biochemistry pool group air feed, tracheae valve is regulated to make the dissolved oxygen content of the Aerobic Pond of biochemistry pool group keep 0.1 ~ 1.2mg/L.Under the condition of this dissolved oxygen content, genus bacillus (Bacillus) can well grow, thus effectively can carry out dephosphorization.
According to a kind of typical embodiment of the present invention, sludge treating system comprises sludge dewatering equipment, and sterilisation system is UV disinfection system.
According to a kind of typical embodiment of the present invention, provide a kind of novel method of municipal sewage treatment.The method comprises the following steps: the first step: sanitary sewage enters through city planting ductwork the pollution substance that large volume removed by coarse rack well, and coarse rack mesh is 25 ~ 100mm, second step: the water outlet of coarse rack well flows into sewage lifting pump sump, then is promoted to fine fack well from sewage lifting pump sump through lift pump, and fine fack will tackle impurities in water and large particulate matter, and fine fack mesh is 1.5 ~ 25mm, 3rd step: the water outlet of fine fack well flows into settling pit, and the precipitate in water is got off by settling pit, 4th step: settling pit water outlet enters the biochemistry pool group of second-stage treatment, second pond part sludge reflux is to biochemistry pool group front end, quantity of reflux is 0 ~ 1Q, the mixed-liquor return of biochemistry pool group inside is undertaken by traditional technology reflux type, in biochemistry pool group, add genus bacillus, make its effective flora number remain on 10
8~ 10
9individual, for ensureing effective proliferative speed of genus bacillus, nutritive medium is added in biochemistry pool group, nutritive medium is 1: 0.00000004 ~ 1: 0.00000008 with water inlet volume ratio, nutritive medium is mainly tropical fresh fruit, edible ethanol and pure mountain spring water composition, Aeration fan is to biochemistry pool group air feed, tracheae valve is regulated to make the dissolved oxygen content of the Aerobic Pond of biochemistry pool group keep 0.1 ~ 1.2mg/L, system can keep genus bacillus (Bacillusspp.) to draw ammonia nitrogen (ammonium salt) under low DO condition always, synthesis and metabolic process is entered after hydrogen sulfide, thus carry out denitrogenation, 6.9 ~ 6.0 are dropped to through the pH of said process biochemistry pool group, nitrogen element portions enters in mud with the form of organonitrogen, and removed from system by the discharge of excess sludge, being partially converted into nitrogen enters in air, 5th step: the water outlet of biochemistry pool group flows into second pond, and muddy water is separated in second pond, second pond part mud is back to biochemistry pool group front end through sludge reflux pump, and second pond residual sludge pump is to sludge treating system process, 6th step: secondary clarifier effluent is discharged through water outlet scale tank after flowing into sterilisation system.
The present invention, utilizing in genus bacillus Treating Municipal Sewage process, compare with traditional technology, without the need to additionally increasing equipment, biochemistry pool group aeration air quantity is lower, observable index traditional technology saves about 30%, and greatly save system investments and running cost, every water outlet Absorbable organic halogens reaches " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) one-level A standard.
Beneficial effect of the present invention is further illustrated below in conjunction with embodiment.
Embodiment 1
In the novel method of municipal sewage treatment of the present invention, microorganism comprises bacillus (Bacillus bacterium) microorganism and comprises solid Ammonia genus bacillus, Bacillus mucilaginosus, bacillus amyloliquefaciens, bacillus laterosporus, subtilis, Bacillus licheniformis, bacillus cereus, bacillus thuringiensis, bacillus megaterium, bacillus polymyxa, bacillus amyloliquefaciens and bacillus pumilus etc., this technique is concrete as shown in Figure 2, mainly comprises the following steps:
The first step: sanitary sewage enters through city planting ductwork the pollution substance that large volume removed by coarse rack well, and coarse rack mesh is 25 ~ 100mm;
Second step: the water outlet of coarse rack well flows into sewage lifting pump sump, then is promoted to fine fack well from sewage lifting pump sump through lift pump, and fine fack will tackle impurities in water and large particulate matter, and fine fack mesh is 1.5 ~ 25mm;
3rd step: the water outlet of fine fack well flows into settling pit, and the precipitate in water is got off by settling pit;
4th step: settling pit water outlet enters the biochemical reaction tank of second-stage treatment, second pond part sludge reflux is to biochemistry pool group front end, quantity of reflux is 0 ~ 1Q, the mixed-liquor return of biochemistry pool group inside is undertaken by traditional technology reflux type, in biochemistry pool group, add genus bacillus, make its effective flora number remain on 10
8~ 10
9individual, for ensureing effective proliferative speed of genus bacillus, nutritive medium is added in biochemistry pool group, nutritive medium is 1: 0.00000004 ~ 1: 0.00000008 with water inlet volume ratio, nutritive medium is mainly tropical fresh fruit, edible ethanol and pure mountain spring water composition, Aeration fan is to biochemistry pool group air feed, tracheae valve is regulated to make the dissolved oxygen content of the Aerobic Pond of biochemistry pool group keep 0.1-1.2mg/L, system can keep genus bacillus (Bacillusspp.) to draw ammonia nitrogen (ammonium salt) under low DO condition always, synthesis and metabolic process is entered after hydrogen sulfide, thus carry out denitrogenation, 6.9 ~ 6.0 are dropped to through the pH of said process biochemistry pool group, nitrogen element portions enters in mud with the form of organonitrogen, and removed from system by the discharge of excess sludge, being partially converted into nitrogen enters in air,
5th step: the water outlet of biochemistry pool group flows into second pond, in second pond, muddy water is separated, second pond part mud is back to biochemistry pool group front end through sludge reflux pump, and second pond residual sludge pump processes to sludge treating system (sludge dewatering equipment);
6th step: secondary clarifier effluent is discharged through water outlet scale tank after flowing into UV disinfection system.
Implement technique scheme, sewage disposal index is as shown in table 1.
Table 1
Known by above data, in sewage treatment process after biochemistry pool group adds bacillus micro-organism, water outlet indices Absorbable organic halogens reaches one-level A standard, even if inflow temperature is lower than under 8 DEG C of conditions in the winter time, genus bacillus still can play stronger Pollutant Treatment ability, water outlet COD, T-N and NH
3equal can the stablizing of-N reaches one-level emission standard A, and the average removal rate that COD average removal rate reaches 93.2%, T-N reaches 77.02%, NH
3the average removal rate of-N reaches 97.93%.
Below in conjunction with above-described embodiment detailed analysis beneficial effect of the present invention:
1) efficient denitrogenation dephosphorizing ability
With traditional nitrated, denitrification denitrogenation principle difference, genus bacillus (Bacillusspp.) directly draws amine (organonitrogen), ammonia nitrogen and ammonium salt, for Institute of Micro-biology utilizes, thus carry out de-amine, nitrogen element, enter in mud with the form of organonitrogen, and removed from system by the discharge of excess sludge, change into nitrogen and enter in air.Genus bacillus belongs to gram-positive microorganism, compared with Gram-negative bacteria, gram-positive bacteria cell wall than Gram-negative bacteria (mushroom used in general activated sludge process) cell wall thickness and evenly, carry out connection peptides glycan mainly through peptide bond and form cell walls.The cell walls of gram-positive microorganism contains a large amount of teichoic acids.That is, in the building-up reactions of microorganism, phosphoric acid salt enters in the cell walls of bacillus with the form of teichoic acid, finally by discharge dephosphorization from system of excess sludge.Bacillus can be absorbed during ammonia NH state before the nitrogen composition oxidation in sewage, absorb at short notice, the part in the middle of the nitrogen absorbed, absorbed using by as nutrient when breeding utilize.Say from biology, the picked-up of phosphorus is maximum value when dissolved oxygen concentration 0.5mg/l.But, one of best growth condition of genus bacillus (Bacillus) be dissolved oxygen concentration in biochemistry pool group at 0.1 ~ 1.2mg/l, the two condition conforms to, and therefore, effectively can carry out dephosphorization.
2) extra deodoration system is not needed
Genus bacillus (Bacillus) has the ability of transient absorption, decompose odor, can suppress the generation of foul smell when sewage is through BBR art breading.Therefore the foul smell problem, perplexing sewage treatment facility is satisfactorily resolved.Because genus bacillus itself has deodorizing capability, substantially mud and foul smell is there is not in the treating processes of BBR technique, its biochemical process section, sludge treatment section can not need to carry out extra deodorizing process, can reduce the investment cost of sewage work to deodoration system like this.
3) significantly cost of investment is reduced
In a kind of typical embodiment of the present invention, utilize in genus bacillus Treating Municipal Sewage process and only need to add genus bacillus in traditional technology biochemistry pool group, for ensureing the quick advantage breeding of genus bacillus, nutritive medium is added in biochemistry pool group, all the other techniques all can flow process be carried out traditionally, newly-increased any equipment is not needed yet, the expense of genus bacillus and nutritive medium that whole treating processes is only many than traditional technology, can ensure that water outlet reaches country-level A standard, greatly reduce cost of investment.
4) energy-conservation, saving is taken up an area
Utilizing in genus bacillus Treating Municipal Sewage process, compared with traditional technology, do not need additionally to increase occupation of land, only in biochemistry pool group, add genus bacillus and nutritive medium can meet art breading requirement, can meet under the dissolved oxygen concentration simultaneously in biochemistry pool group is in the condition of lower concentration (0.1 ~ 1.2mg/l).Therefore, required aeration capacity significantly reduces than traditional technology.Do not need the attendant equipments such as odor removal in overall Sewage treatment systems, gemma bar office self has the ability of decompose odor, by the sludge reflux of second pond 4 ‰ to front end pretreatment section simultaneously, the effect of deodorizing can be reached, amid all these factors, can save energy be realized, save the advantage of taking up an area.
5) water quality is discharged good
Municipal wastewater through the inventive method process can reach " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) one-level A standard.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a novel method for municipal sewage treatment, is characterized in that, comprises the following steps:
The first step: sewage enters the pollution substance that large volume removed by coarse rack well;
Second step: the water outlet of described coarse rack well flows into sewage lifting pump sump, then is promoted to fine fack well from described sewage lifting pump sump through lift pump, the fine fack interception impurities in water of described fine fack well and large particulate matter;
3rd step: the water outlet of described fine fack well flows into settling pit, and the precipitate in water is got off by described settling pit;
4th step: the water outlet of described settling pit flows into the biochemistry pool group of second-stage treatment, second pond sludge reflux is to the front end of described biochemistry pool group, the quantity of reflux of described second pond mud is 0 ~ 1Q, and adding in described biochemistry pool group with bacillus micro-organism is the flora of dominant bacteria;
5th step, the water outlet of described biochemistry pool group flows into second pond, and in described second pond, carry out mud-water separation, part second pond mud is back to the front end of described biochemistry pool group through sludge reflux pump, and described second pond residual sludge pump is to sludge treating system process;
6th step: described secondary clarifier effluent is discharged through water outlet scale tank after flowing into sterilisation system.
2. novel method according to claim 1, it is characterized in that, described bacillus micro-organism comprise in the group be made up of solid Ammonia genus bacillus, Bacillus mucilaginosus, bacillus amyloliquefaciens, bacillus laterosporus, subtilis, Bacillus licheniformis, bacillus cereus, bacillus thuringiensis, bacillus megaterium, bacillus polymyxa, bacillus amyloliquefaciens and bacillus pumilus one or more.
3. novel method according to claim 1, is characterized in that, in described biochemistry pool group, effectively flora number remains on 10
8~ 10
9individual.
4. novel method according to claim 1, it is characterized in that, nutritive medium throwing device is provided with in described biochemistry pool group, in described biochemistry pool group, add nutritive medium by described nutritive medium throwing device, described nutritive medium contains Si, Mg, Mn, Ca, Fe, Al, Ti, Zn, Rb, Sr, Na, Zr, K, P and S element.
5. novel method according to claim 4, is characterized in that, the nutritive medium added in described biochemistry pool group is 1: 0.00000004 ~ 1: 0.00000008 with water inlet volume ratio; Described nutritive medium comprises tropical fresh fruit, edible ethanol and pure mountain spring water.
6. novel method according to claim 1, is characterized in that, the mesh of the coarse rack of described coarse rack well is 25 ~ 100mm; The mesh of described fine fack is 1.5 ~ 25mm.
7. novel method according to claim 1, is characterized in that, described biochemistry pool group comprises anaerobic pond, anoxic pond and Aerobic Pond.
8. novel method according to claim 7, is characterized in that, by Aeration fan to biochemistry pool group air feed, regulates tracheae valve to make the dissolved oxygen content of the Aerobic Pond of described biochemistry pool group keep 0.1 ~ 1.2mg/L.
9. novel method according to claim 1, is characterized in that, described sludge treating system comprises sludge dewatering equipment.
10. novel method according to claim 1, is characterized in that, described sterilisation system is UV disinfection system.
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| CN (1) | CN105130126A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105858738A (en) * | 2016-04-20 | 2016-08-17 | 尚川（北京）水务有限公司 | Sewage collection device, sewage treatment system and sewage treatment method |
| CN106007213A (en) * | 2016-07-12 | 2016-10-12 | 佛山杰致信息科技有限公司 | Sewage treatment system |
| CN106542702A (en) * | 2016-12-08 | 2017-03-29 | 重庆淏园环保科技有限公司 | A kind of Integral high-efficient precipitation sewage treatment process |
| CN106946409A (en) * | 2017-04-12 | 2017-07-14 | 安徽新宇生态园林股份有限公司 | A kind of municipal wastewater processing unit |
| CN107162343A (en) * | 2017-06-29 | 2017-09-15 | 苏州科博思设备工程有限公司 | A kind of sewage disposal system |
| CN107867782A (en) * | 2017-11-24 | 2018-04-03 | 岑溪市辰运生态农业开发有限公司 | A kind of Citrus shatangju station-service sewage-treatment plant |
| CN109437469A (en) * | 2018-06-07 | 2019-03-08 | 四川旭昊德环保设备有限公司 | A kind of purifying domestic sewage method |
| CN109502921A (en) * | 2018-12-27 | 2019-03-22 | 怀集汇清环保设备工程有限公司 | A kind of integrated A2/ O sewage disposal system |
| CN109650556A (en) * | 2019-01-23 | 2019-04-19 | 武汉丰甜生物科技有限公司 | The composite bacillus microbial inoculum and its application of ammonia nitrogen and nitrite in degradation water body |
| CN110563260A (en) * | 2019-09-09 | 2019-12-13 | 湖南鑫恒环境科技有限公司 | method for treating sewage by optimizing oxidation ditch process |
| CN110980963A (en) * | 2019-11-26 | 2020-04-10 | 浙江永续环境工程有限公司 | Sewage treatment process applying active microbial inoculum |
| CN110981079A (en) * | 2019-11-26 | 2020-04-10 | 浙江永续环境工程有限公司 | Sewage treatment process applying microbial carrier |
| CN111040968A (en) * | 2019-12-26 | 2020-04-21 | 青岛根源生物技术集团有限公司 | Microbial agent for efficiently removing COD (chemical oxygen demand) in domestic sewage and application thereof |
| CN112062404A (en) * | 2020-09-08 | 2020-12-11 | 江苏众志新禹环境科技有限公司 | Continuous filtration type municipal sewage treatment method |
| CN112980741A (en) * | 2021-04-22 | 2021-06-18 | 青海洁神环境科技股份有限公司 | Compound microbial agent for sewage treatment and preparation method and application thereof |
| CN113005044A (en) * | 2021-05-07 | 2021-06-22 | 马东兵 | Method for treating urban sewage by using microbial composite bacteria |
| CN113943080A (en) * | 2021-10-29 | 2022-01-18 | 深圳万宏业科技有限公司 | Environment-friendly treatment system and method for various waste sewage |
| CN115591283A (en) * | 2022-12-13 | 2023-01-13 | 广东立行环境设计有限公司（Cn） | Sewage pipe network distribution system with biological treatment capacity |
| CN115872563A (en) * | 2022-12-22 | 2023-03-31 | 青岛双元水务有限公司 | Multi-section AO-MBBR zero-carbon-source sewage denitrification method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0857696A2 (en) * | 1997-02-05 | 1998-08-12 | Haekang Engineering & Construction Co., Ltd. | A system for treating sewage-water and a method for treating sewage-water using the same |
| CN102249489A (en) * | 2011-06-10 | 2011-11-23 | 青海洁神环境能源产业有限公司 | Wastewater treatment device and wastewater treatment method using same |
| CN103910463A (en) * | 2013-11-21 | 2014-07-09 | 青海洁神环境能源产业有限公司 | Novel process for BC urban sewage treatment |
-
2015
- 2015-09-14 CN CN201510579974.4A patent/CN105130126A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0857696A2 (en) * | 1997-02-05 | 1998-08-12 | Haekang Engineering & Construction Co., Ltd. | A system for treating sewage-water and a method for treating sewage-water using the same |
| CN102249489A (en) * | 2011-06-10 | 2011-11-23 | 青海洁神环境能源产业有限公司 | Wastewater treatment device and wastewater treatment method using same |
| CN103910463A (en) * | 2013-11-21 | 2014-07-09 | 青海洁神环境能源产业有限公司 | Novel process for BC urban sewage treatment |
Non-Patent Citations (2)
| Title |
|---|
| 宋志伟，李燕主编: "《水污染控制工程》", 31 July 2013, 徐州：中国矿业大学出版社 * |
| 张宪武主编: "《土壤微生物研究 理论•应用•新方法》", 31 January 1993 * |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105858738A (en) * | 2016-04-20 | 2016-08-17 | 尚川（北京）水务有限公司 | Sewage collection device, sewage treatment system and sewage treatment method |
| CN106007213A (en) * | 2016-07-12 | 2016-10-12 | 佛山杰致信息科技有限公司 | Sewage treatment system |
| CN106542702A (en) * | 2016-12-08 | 2017-03-29 | 重庆淏园环保科技有限公司 | A kind of Integral high-efficient precipitation sewage treatment process |
| CN106946409A (en) * | 2017-04-12 | 2017-07-14 | 安徽新宇生态园林股份有限公司 | A kind of municipal wastewater processing unit |
| CN107162343A (en) * | 2017-06-29 | 2017-09-15 | 苏州科博思设备工程有限公司 | A kind of sewage disposal system |
| CN107867782A (en) * | 2017-11-24 | 2018-04-03 | 岑溪市辰运生态农业开发有限公司 | A kind of Citrus shatangju station-service sewage-treatment plant |
| CN109437469A (en) * | 2018-06-07 | 2019-03-08 | 四川旭昊德环保设备有限公司 | A kind of purifying domestic sewage method |
| CN109502921A (en) * | 2018-12-27 | 2019-03-22 | 怀集汇清环保设备工程有限公司 | A kind of integrated A2/ O sewage disposal system |
| CN109650556A (en) * | 2019-01-23 | 2019-04-19 | 武汉丰甜生物科技有限公司 | The composite bacillus microbial inoculum and its application of ammonia nitrogen and nitrite in degradation water body |
| CN110563260A (en) * | 2019-09-09 | 2019-12-13 | 湖南鑫恒环境科技有限公司 | method for treating sewage by optimizing oxidation ditch process |
| CN110980963A (en) * | 2019-11-26 | 2020-04-10 | 浙江永续环境工程有限公司 | Sewage treatment process applying active microbial inoculum |
| CN110981079A (en) * | 2019-11-26 | 2020-04-10 | 浙江永续环境工程有限公司 | Sewage treatment process applying microbial carrier |
| CN110981079B (en) * | 2019-11-26 | 2022-04-22 | 浙江永续环境工程有限公司 | Sewage treatment process applying microbial carrier |
| CN111040968A (en) * | 2019-12-26 | 2020-04-21 | 青岛根源生物技术集团有限公司 | Microbial agent for efficiently removing COD (chemical oxygen demand) in domestic sewage and application thereof |
| CN112062404A (en) * | 2020-09-08 | 2020-12-11 | 江苏众志新禹环境科技有限公司 | Continuous filtration type municipal sewage treatment method |
| CN112980741A (en) * | 2021-04-22 | 2021-06-18 | 青海洁神环境科技股份有限公司 | Compound microbial agent for sewage treatment and preparation method and application thereof |
| CN113005044A (en) * | 2021-05-07 | 2021-06-22 | 马东兵 | Method for treating urban sewage by using microbial composite bacteria |
| CN113943080A (en) * | 2021-10-29 | 2022-01-18 | 深圳万宏业科技有限公司 | Environment-friendly treatment system and method for various waste sewage |
| CN115591283A (en) * | 2022-12-13 | 2023-01-13 | 广东立行环境设计有限公司（Cn） | Sewage pipe network distribution system with biological treatment capacity |
| CN115591283B (en) * | 2022-12-13 | 2023-03-14 | 广东立行环境设计有限公司 | Sewage pipe network distribution system with biological treatment capacity |
| CN115872563A (en) * | 2022-12-22 | 2023-03-31 | 青岛双元水务有限公司 | Multi-section AO-MBBR zero-carbon-source sewage denitrification method |
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