CN104478077B - A kind of cultural method of the activated sludge of Industrial Wastewater Treatment - Google Patents
A kind of cultural method of the activated sludge of Industrial Wastewater Treatment Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The cultural method of the activated sludge of a kind of Industrial Wastewater Treatment, chooses SV30、COD、NH4 +N, volatile phenol are as the target control factor, using coke powder or Powdered Activated Carbon as Activated Sludge Growth nucleus, using sodium carbonate as inorganic carbon source.The invention provides a kind of bacterial classification wide material sources, cost is relatively low, the activated sludge culture method that incubation time is short, the activity of activated sludge that the method obtains is high, target elements controls clearly, applicability is strong, can bear the COD load that waste water is higher, is truly realized the advanced treating of high-concentration hardly-degradable organic matter, industrial waste water with high ammoniac nitrogen.
Description
Technical field
The invention belongs to Sewage advanced treatment field, particularly relate to a kind of for organic containing high-concentration hardly-degradable
The cultural method of the activated sludge that thing, industrial waste water with high ammoniac nitrogen process.
Background technology
Along with industrial expansion, the particularly development of oil, chemical industry, the composition of pollutant is day by day multiple
Miscellaneous, containing substantial amounts of organic pollution in waste water, if being only extremely difficult to improvement with Physical or chemical method
Requirement, bioanalysis is cheap because of it, and it is convenient to run, and can effectively control the advantages such as pollutant and extensively should
With.The principle of biological treatment, will mainly by utilizing the metabolism degradation of organic substances of microorganism
Organic pollution is transformed into harmless gaseous product, product liquid and rich in organic solid product
(micropopulation or biological sludge), makes sewage be purified.Therefore, cultivation is tamed out highly active micro-
Biological flora so that it is give full play to degradation, can be substantially improved the biochemical process disposal ability to sewage.
Coking chemical waste water is one relatively common in industrial wastewater, is by the high-temperature retorting of raw coal, gas purification
With generation in chemical products subtractive process, its complicated component, containing tens of kinds of inorganic and difficult degradation organic compounds
Thing, belongs to high COD, high phenol value, the coking chemical waste water of high ammonia-nitrogen wastewater, especially steel industry, its waste water
Amount is big, administers difficulty, always restricts the key factor of steel industry sustainable development.In recent years, domestic
Research to processing containing high-concentration hardly-degradable organic matter, industrial waste water with high ammoniac nitrogen outward gets more and more, processing method
Varied, wherein, activated sludge process is to process containing high-concentration hardly-degradable organic matter, industrial waste water with high ammoniac nitrogen
In wide Biochemical manipulation.
Activated sludge process is a kind of method of Sewage Biological Treatment, i.e. under conditions of artificial oxygenation, to sewage
It is mixed continuously with various micropopulations, after forming activated sludge, utilizes the biology of activated sludge
Cohesion, absorption and oxidation, to decompose the organic pollution removed in sewage, it has wastewater treatment capacity
Greatly, efficiency high, process range is wide, the features such as relative running cost is relatively low, but wants the condition of water quality of waste water
Ask higher, as dense in the pH of waste water, temperature, nutrient source dosage, toxic substance concentration, entering organic matter of water
Degree, dissolved oxygen etc..So before biochemical system is opened, needing mud is tamed so that it is adapt to waste water
Water quality, reaches most degradation ability, and in the process, shortens the culturing sludge time, and reduction is trained
This, find optimal cultural method, put biochemical system as early as possible into operation and make standard water discharge have important meaning
Justice.
As CN 103708610A discloses the cultural method of a kind of Treatment of Coking Effluent activated sludge, the party
The treatable waste water COD load of mud that method is turned out is 2600-2900mg/L, due to coking chemical waste water water
Amount is big, and water COD is higher, and the Treatment of Sludge ability that the method is cultivated is relatively low, tames the time
Long.Li Xiuyan (domestic sludge is tamed for the cultivation of Treatment of Coking Effluent, the 2nd phase of volume 32, and 2010
April in year) utilize the dewatered sludge of domestic sewage factory to do bacterial classification, dewatered sludge convenient transportation, but dewatered sludge needs to exist
Domestic sewage factory does early stage and processes, and dehydration forms mud cake, and also needing before input adds water stirs into mud, and process is numerous
Miscellaneous, and influent quality to be gone is stable, the domestication time is longer.
CN 1884134A discloses a kind of two-stage synchronous nitrification denitrification and processes ammonia nitrogen waste water method, this side
Method filters out allotrophic nitrobacteria and the aerobic denitrifying bacteria adapting to more by force ability to environment, uses heterotrophism
Nitrobacteria and aerobic denitrifying bacteria build synchronous nitration and denitrification sludge system and process nitrogenous effluent, but
The method needs sodium succinate 4.7g, KNO3, MgSO during sludge for agricultural use4·7H2O trace unit
The materials such as cellulose solution, incubation is complicated, and the domestication time is long, and cost can increase in actual large-scale culture
High.
In sum, there is a lot of problem in activated sludge in incubation, such as cultivation cycle length, cultivated
Journey is numerous and diverse, fluctuation of service, operability are low.Although the method for culture sludge has a lot, but generally deposits
, the problem such as cost high, the waste water COD load that bear relatively low big at microorganism consumption.
Summary of the invention
In order to solve above-mentioned technical problem, the invention provides a kind of bacterial classification wide material sources, cost is relatively low, training
The activated sludge culture method that the time of supporting is short, the activity of activated sludge that the method obtains is high, target elements controls
Clearly, applicability is strong, can bear the COD load that waste water is higher, is truly realized industrial wastewater, especially
High-concentration hardly-degradable organic matter, the advanced treating of industrial waste water with high ammoniac nitrogen.
For reaching above-mentioned purpose, the present invention adopts the following technical scheme that
The cultural method of the activated sludge of a kind of Industrial Wastewater Treatment, chooses SV30、COD、NH4 +-N、
Volatile phenol as the target control factor, using coke powder or Powdered Activated Carbon as Activated Sludge Growth nucleus, passes through
Inorganic carbon source is provided while sodium carbonate regulation pH.
SV30Refer to aeration tank mixed liquor percent by volume after graduated cylinder quiescent settling 30min shared by mud.
It is the short-cut method analyzing sludge settling property.SVI i.e. sludge volume index, refers to that aeration tank mixes
Liquid through 30min quiet heavy after, the volume shared by corresponding 1g dewatered sludge, SVI=SV30/MLSS.General,
Good activated sludge SVI often between 50～120, SV30About 30%.In the feelings without other exceptions
Under condition, SV30Can be as the reference frame of excess sludge discharge.
As optimal technical scheme, cultural method of the present invention, adapt to including mud growth period, mud
Phase, sludge acclimatization phase and mud maturity period.
As optimal technical scheme, cultural method of the present invention, described mud process in growth period is: note
Enter clear water, add glucose, nitrogen source and P elements and carry out vexed exposure, step up glucose COD load,
By culturing sludge to SV30Reach 8-12%；
Preferably, described mud process in growth period is: injected clear water in reactor, connects bacterial classification, makes SV30
Not less than 2%, add growth nucleus, carry out vexed exposure, with glucose, sodium phosphate as nutrient source, by proportioning
COD:N:P=150-250:1-10:0.2-5 adds, and the dosage of glucose is 100-150kg/d, and with
The gradient of 20-25kg/d is incremented by, control test index supernatant C OD≤250mg/L,
NH4 +-N≤10mg/L, volatile phenol≤20mg/L；By adding sodium carbonate regulation system pH value it is
7.5～8.0, control system temperature is 25 DEG C～30 DEG C, and dissolved oxygen is 1～2mg/L, works as SV30Reach 8-12%
Stop vexed exposure.
Preferably, the injection rate of described clear water is the 1/4～1/2 of reactor, preferably 1/3.
Preferably, the time of described vexed exposure is more than 1 day, preferably 2 days～3 days.
As optimal technical scheme, cultural method of the present invention, described mud laundering period process is: few
Amount interval fills into certain density waste water, cultivates to SV30Reach 15%；
Preferably, described mud laundering period process is: after vexed exposure terminates, and injects dilute in the way of a small amount of interval
Industrial wastewater after releasing, the COD of described industrial wastewater is 4000-5000mg/L, and inflow is 2m3/ h,
Intake first day and persistently intake 2 hours at interval of 4 hours, intake and within second day, rise persistently to enter at interval of 2 hours
Water 2 hours, is gradually increased the amount of glucose, sodium phosphate, Portugal under conditions of keeping nutrient source proportioning simultaneously
Grape sugar amount be progressively incremented by with the gradient of 5kg/d, during control supernatant C OD≤250mg/L,
NH4 +-N≤10mg/L, volatile phenol≤20mg/L, by adding sodium carbonate regulation system pH value be
7.5～8.0, control system temperature is 25 DEG C～30 DEG C, and dissolved oxygen is 3mg/L, cultivates to SV30Reach 15%,
Carry out continuum micromeehanics, this process need more than 6 days, preferably 8～12 days.
As optimal technical scheme, cultural method of the present invention, described sludge acclimatization phase process is: protect
Hold glucose COD load constant, be stepped up influent load, cultivate to SV30Reach 20%；
Preferably, described sludge acclimatization phase process is: a small amount of and be continuously injected into industrial wastewater, from 2m3/ h opens
Begin, be a water yield Load lifting cycle with 3 days, with 2m3/ h increases gradient for water inlet, and in this process
Middle control supernatant C OD≤250mg/L, NH4 +While-N≤10mg/L, volatile phenol≤20mg/L, keep
The input amount of glucose is constant, is 7.5～8.0 by adding sodium carbonate regulation system pH value, control system temperature
Degree is at 25 DEG C～30 DEG C, and dissolved oxygen is 3mg/L, cultivates to SV30Reaching 20%, this process needs more than 6 days,
It is preferably 8～12 days.
As optimal technical scheme, cultural method of the present invention, described mud maturity period process is: by
Step reduces glucose load and adds to stopping, cultivating to SV30Reach about 30%；
Preferably, described mud maturity period process is: at SV30After reaching 20%, keeping nutrient source proportioning not
Under conditions of change, the amount being gradually lowered glucose with the gradient of 40kg/d adds to stopping, controlling test index
Bio-chemical effluent COD≤250mg/L, NH4 +-N≤5mg/L, volatile phenol≤5mg/L, adjust by adding sodium carbonate
Joint system pH value is 7.5～8.0, and control system temperature is at 25 DEG C～30 DEG C, and dissolved oxygen is 4mg/L, increases
Influent load, to reaching Design cooling load, is cultivated to SV30Reaching 30%, now, the mud in reactor is cultivation
Activated sludge, this process need more than 5 days, preferably 5～9 days.
As optimal technical scheme, cultural method of the present invention, comprise the following steps:
(1) mud growth period
Injected clear water is at 1/3rd of reactor in the reactor, adds a certain amount of mud in reactor
Bacterial classification, mud comes from sanitary sewage so that it is SV30Not less than 2%, add what coke powder grew as mud
Long-Term Sorption nucleus；During vexed exposure, it is provided that nutrient source be glucose, sodium phosphate, proportioning is
COD:N:P=200:5:1, the dosage of glucose is 100-150kg/d, and passs with the gradient of 20-25kg/d
Increase, control test index supernatant C OD≤250mg/L, NH4 +-N≤10mg/L, volatile phenol≤20mg/L.
Meanwhile, being 7.5～8.0 by adding sodium carbonate regulation system pH value, control system temperature is 25 DEG C
～30 DEG C, dissolved oxygen is 1～2mg/L, works as SV30Stopping vexed exposure after reaching 8-12%, this process needs 2～3 days
Left and right；
(2) the mud laundering period
After vexed exposure terminates, in the way of a small amount of interval, inject the industrial wastewater after dilution, described industrial wastewater
COD is 4000-5000mg/L, and inflow is 2m3/ h, intakes first day and at interval of water inlet in 4 hours and holds
Continuous 2 hours, intake and within second day, rise at interval of water inlet in 2 hours and continue 2 hours, meanwhile, keeping nutrition
Be gradually increased the amount of glucose, sodium phosphate under conditions of the proportioning of source, the amount of glucose with the gradient of 5kg/d by
Step be incremented by, during control supernatant C OD≤250mg/L, NH4 +-N≤10mg/L, volatile phenol
≤ 20mg/L, is 7.5～8.0 by adding sodium carbonate regulation system pH value, and control system temperature is 25 DEG C
～30 DEG C, dissolved oxygen is 3mg/L, cultivates to SV30Reaching 15%, carry out continuum micromeehanics, this process needs 10 days
Left and right；
(3) the sludge acclimatization phase
It is continuously injected into industrial wastewater on a small quantity, from 2m3/ h starts, and is a water yield Load lifting week with 3 days
Phase, with 2m3/ h for water inlet increase gradient, and in this process control supernatant C OD≤250mg/L,
NH4 +-N≤10mg/L, volatile phenol≤20mg/L, the input amount simultaneously keeping glucose is constant, by adding
Sodium carbonate regulation system pH value is 7.5～8.0, and control system temperature is at 25 DEG C～30 DEG C, and dissolved oxygen is
3mg/L, cultivates to SV30Reaching 20%, this process needs about 10 days；
(4) the mud maturity period
At SV30After reaching 20%, under conditions of keeping nutrient source proportioning constant, with the gradient of 40kg/d gradually
The amount reducing glucose adds to stopping, control test index bio-chemical effluent COD≤250mg/L,
NH4 +-N≤5mg/L, volatile phenol≤5mg/L, be 7.5～8.0 by adding sodium carbonate regulation system pH value,
Control system temperature is at 25 DEG C～30 DEG C, and dissolved oxygen is 4mg/L, increase influent load to reaching Design cooling load,
Cultivate to SV30Reaching 30%, now, the mud in reactor is the activated sludge of cultivation, and this process needs 7
About it.
During whole, comprehensive mud situation and laboratory indexes adjust inflow, until inflow reaches design and bears
Lotus.After system run all right, the mud in reactor is cultivated activated sludge.
As optimal technical scheme, cultural method of the present invention, described industrial wastewater is difficult containing high concentration
Degradation of organic substances, the waste water of high ammonia nitrogen, preferably coking chemical waste water.
As optimal technical scheme, cultural method of the present invention, the water quality of described coking chemical waste water is pH:
7-9, COD:4000-5000mg/L, phenol: 800-1000mg/L, cyanogen: 15～20mg/L, NH4 +-N:
200～300mg/L.
Compared with prior art, the invention have the advantages that into:
1, the biological treatment that the present invention is high-concentration hardly-degradable organic matter, industrial waste water with high ammoniac nitrogen provides one
Practical example；
2, the activated sludge applicability cultivated by the inventive method is strong, can hold higher COD load, very
Just achieving COD, NH4 +The degraded of the composition such as-N, volatile phenol, the waste water after process has reached national row
Put standard；
3, bacterial classification wide material sources of the present invention, cost is relatively low, and incubation time is short, and the activity of activated sludge of cultivation is high,
Target elements controls clearly, have good market prospects.
Accompanying drawing explanation
Fig. 1 is activated sludge culture process sketch.
Detailed description of the invention
For ease of understanding the present invention, it is as follows that the present invention enumerates embodiment.Those skilled in the art it will be clearly understood that
Described embodiment is used only for help and understands the present invention, is not construed as the concrete restriction to the present invention.
The water quality of coking chemical waste water used by embodiment is pH:7-9, COD:4000-5000mg/L, phenol:
800-1000mg/L, cyanogen: 15～20mg/L, NH4 +-N:200～300mg/L.Bacterial classification takes from life dirt
The mud that water produces, nutrient source is glucose, sodium phosphate, and the ratio of adding is COD:N:P=200:5:1.
Embodiment 1
1, mud growth period
Injected clear water is at 1/3rd of reactor in the reactor, and adding sludge concentration in reactor is
The mud 100m of 2～3g/L3, mud comes from sanitary sewage, SV30At 2%, SVI=90, add coke powder
Long-Term Sorption nucleus as mud growth.During vexed exposure, it is provided that nutrient source be glucose, sodium phosphate,
Proportioning is COD:N:P=200:5:1, and the dosage of glucose is 100kg/d, and is incremented by with the gradient of 25kg/d.
System pH value is 7.5, and system temperature is 28 DEG C, and dissolved oxygen is 1.5mg/L.SV after 3 days30Reach 10%,
Water outlet COD=230mg/L, NH4 +-N=9mg/L, volatile phenol=18mg/L, stop vexed exposure.
2, the mud laundering period
After vexed exposure terminates, it is intermittently injecting coking chemical waste water on a small quantity.The inflow of coking chemical waste water is 2m3/ h, COD
For 800mg/L, the addition of glucose is 150kg/d, and is incremented by with the gradient of 5kg/d.First day every
Intake 2 hours every 4 hours, intake to rise for second day and intake 2 hours every 2 hours.In whole course of reaction,
PH value is 7.8, and system temperature is 28 DEG C, and dissolved oxygen is 3mg/L.Intermittent water inflow lasts 10 days, COD
It is 250mg/L, NH that load reaches 2500 mg/L, water outlet COD4 +-N is 9mg/L, and volatile phenol is 19mg/L,
Sludge settling ratio SV30Reach 15%, SVI=90, mud well-grown, enter next stage continuum micromeehanics.
3, the sludge acclimatization phase
Being continuously injected into coking chemical waste water, influent waste water amount is with 2m3/ h starts, and COD is 2500mg/L, with 3
It is a water yield Load lifting cycle, with 2m3The gradient of/h increases inflow.The addition of glucose is protected
Hold at 200kg/d constant, control COD≤250mg/L, NH4 +-N≤10mg/L, volatile phenol≤20mg/L,
In whole course of reaction, pH value is 7.5, and system temperature is 28 DEG C, and dissolved oxygen is 3mg/L.Continuum micromeehanics
Lasting 10 days, the inflow of waste water reaches 8m3/ h, COD load reaches 4000mg/L, water outlet COD
230mg/L, NH4 +-N is 7mg/L, and volatile phenol is 15mg/L, sludge settling ratio SV30Reach 20%, SVI=93,
Mud well-grown, enters next stage system optimization.
4, the mud maturity period
At SV30After reaching 20%, under conditions of keeping nutrient source proportioning constant, continue with 8m3/ h is intake, by
Gradually reduce the amount of glucose, the addition of glucose from the beginning of 200kg/d, with 160kg/d, 120kg/d,
80kg/d, 40kg/d be gradually lowered addition to stop add, during by add sodium carbonate regulation system
PH value is 7.8, and system temperature is at 28 DEG C, and dissolved oxygen is 4mg/L.Whole process lasts 7 days, last SV30
Reaching 30%, COD load is to reaching Design cooling load 5000mg/L, and water outlet COD is 220mg/L, NH4 +-N
For 8mg/L, volatile phenol is 10mg/L, sludge settling ratio SV30Being 30%, SVI=98, mud growth is good
Good.Now, the mud in reactor is the activated sludge of cultivation.
Embodiment 2
1, mud growth period
Injected clear water is at 1/3rd of reactor in the reactor, and adding sludge concentration in reactor is
The mud 120m of 2～3g/L3, mud comes from sanitary sewage, SV30At 3%, SVI=90, add coke powder
Long-Term Sorption nucleus as mud growth.During vexed exposure, it is provided that nutrient source be glucose, sodium phosphate,
Proportioning is COD:N:P=200:5:1, and the dosage of glucose is 100kg/d, and is incremented by with the gradient of 25kg/d.
System pH value is 7.8, and system temperature is 29 DEG C, and dissolved oxygen is 2mg/L.SV after 3 days30Reach 10%,
Water outlet COD=220mg/L, NH4 +-N=10mg/L, volatile phenol=19mg/L, stop vexed exposure.
2, the mud laundering period
After vexed exposure terminates, it is intermittently injecting coking chemical waste water on a small quantity.The inflow of coking chemical waste water is 2m3/ h, COD
For 800mg/L, the addition of glucose is 150kg/d, and is incremented by with the gradient of 5kg/d.First day every
Intake 2 hours every 4 hours, intake to rise for second day and intake 2 hours every 2 hours.In whole course of reaction,
PH value is 7.6, and system temperature is 29 DEG C, and dissolved oxygen is 3mg/L.Intermittent water inflow lasts 10 days, waste water
Inflow reaches 5m3It is 240mg/L, NH that/h, COD load reaches 2300mg/L, water outlet COD4 +-N be
10mg/L, volatile phenol is 20mg/L, sludge settling ratio SV30Reach 15%, SVI=94, mud well-grown,
Enter next stage continuum micromeehanics.
3, the sludge acclimatization phase
Being continuously injected into coking chemical waste water, influent waste water amount is with 2m3/ h starts, and COD is 2300mg/L, with 3
It is a water yield Load lifting cycle, with 2m3The gradient of/h increases inflow.The addition of glucose is protected
Hold at 200kg/d constant, control COD≤250mg/L, NH4 +-N≤10mg/L, volatile phenol≤20mg/L.
In whole course of reaction, pH value is 7.7, and system temperature is 28 DEG C, and dissolved oxygen is 3mg/L.Continuum micromeehanics
Lasting 10 days, the inflow of waste water reaches 8m3/ h, COD load reaches 4200mg/L, water outlet COD
220mg/L, NH4 +-N is 8mg/L, and volatile phenol is 17mg/L, sludge settling ratio SV30Reach 20%, SVI=96,
Mud well-grown, enters next stage system optimization.
4, the mud maturity period
At SV30After reaching 20%, under conditions of keeping nutrient source proportioning constant, continue with 8m3/ h is intake, by
Gradually reduce the amount of glucose, sodium phosphate, the addition of glucose from the beginning of 200kg/d, with 160kg/d, 120
Kg/d, 80kg/d, 40kg/d are gradually lowered addition and add to stopping.During by add sodium carbonate adjust
Joint system pH value is 7.9, and system temperature is 28 DEG C, and dissolved oxygen is 4mg/L.Whole process lasts 7 days,
Last SV30Reaching 30%, COD load is to reaching Design cooling load 5000mg/L, and water outlet COD is 210mg/L,
NH4 +-N is 7mg/L, and volatile phenol is 9mg/L, sludge settling ratio SV30It is 30%, SVI=103, mud
Well-grown.Now, the mud in reactor is the activated sludge of cultivation.
SV30: actual is exactly the volume after activated sludge settles 30 minutes in 1000 milliliters of graduated cylinders.Unit:
ML/L。
MLSS: mixed liquor suspended solid, MLSS (MIX LIQUID SUSPENDED Solid) 1L aeration tank is dirty
The quality of dewatered sludge contained by mud mixed liquor. by competent cell, the microflora organisms of endogenous metabolism residual, can not give birth to
The organic suspension solid changed, inorganic suspended solid composition.Unit: g/L.
SVI: sludge volume index SVI=SV30/MLSS
Sludge index refer to aeration tank mixed liquor through 30min quiet heavy after, volume shared by corresponding 1g dewatered sludge (with
ML counts), that is: quiet heavy rear mud volume (the mL)/mud dry weight (g) of SVI=mixed liquor 30min.
The loosening degree of SVI value energy reflected well activated sludge and flocking settling performance.Good activity
Mud SVI often between 50～120, SV30Represent about 30%.
Applicant states, the present invention illustrates detailed process equipment and the technique of the present invention by above-described embodiment
Flow process, but the invention is not limited in above-mentioned detailed process equipment and technological process, i.e. do not mean that the present invention
Have to rely on above-mentioned detailed process equipment and technological process could be implemented.Person of ordinary skill in the field should
This understands, any improvement in the present invention, and the equivalence of raw material each to product of the present invention is replaced and auxiliary element
Interpolation, concrete way choice etc., within the scope of all falling within protection scope of the present invention and disclosure.
Claims (16)
1. the cultural method of the activated sludge of an Industrial Wastewater Treatment, it is characterised in that choose SV30、
COD、NH4 +-N, volatile phenol are as the target control factor, using coke powder or Powdered Activated Carbon as activated sludge
Growth nucleus, by providing inorganic carbon source while sodium carbonate regulation pH；
Described cultural method includes mud growth period, mud laundering period, sludge acclimatization phase and mud maturity period；
Described mud process in growth period is: injected clear water, adds glucose, nitrogen source and P elements and carries out vexed
Expose, step up glucose COD load, by culturing sludge to SV30Reach 8-12%；
Described mud laundering period process is: a small amount of interval fills into certain density waste water, cultivates to SV30Reach
15%；
Described sludge acclimatization phase process is: keep glucose COD load constant, is stepped up bearing into water
Lotus, cultivates to SV30Reach 20%；
Described mud maturity period process is: gradually reduces glucose load and adds to stopping, cultivating to SV30Reach
To 30%.
Cultural method the most according to claim 1, it is characterised in that described mud process in growth period is:
Injected clear water in reactor, connects bacterial classification, makes SV30Not less than 2%, add growth nucleus, carry out vexed exposure,
With glucose, sodium phosphate as nutrient source, add by proportioning COD:N:P=150-250:1-10:0.2-5, grape
The dosage of sugar is 100-150kg/d, and is incremented by with the gradient of 20-25kg/d, controls test index supernatant
COD≤250mg/L、NH4 +-N≤10mg/L, volatile phenol≤20mg/L；By adding sodium carbonate regulation system
PH value is 7.5～8.0, and control system temperature is 25 DEG C～30 DEG C, and dissolved oxygen is 1～2mg/L, works as SV30Reach
Vexed exposure is stopped to 8-12%.
Cultural method the most according to claim 2, it is characterised in that the injection rate of described clear water is anti-
Answer the 1/4～1/2 of device.
Cultural method the most according to claim 3, it is characterised in that the injection rate of described clear water is anti-
Answer the 1/3 of device.
Cultural method the most according to claim 2, it is characterised in that the time of described vexed exposure is 1 day
Above.
Cultural method the most according to claim 5, it is characterised in that the time of described vexed exposure is 2 days
～3 days.
Cultural method the most according to claim 1, it is characterised in that described mud laundering period process is:
After described vexed exposure terminates, in the way of a small amount of interval, inject the industrial wastewater after dilution, described industrial wastewater
COD is 4000～5000mg/L, and inflow is 2m3/ h, intakes first day at interval of within 4 hours, persistently intaking 2
Hour, intake to rise for second day and persistently intake 2 hours at interval of 2 hours, keeping nutrient source proportioning simultaneously
Under the conditions of be gradually increased the amount of glucose, sodium phosphate, the amount of glucose is progressively incremented by with the gradient of 5kg/d,
During control supernatant C OD≤250mg/L, NH4 +-N≤10mg/L, volatile phenol≤20mg/L, by adding
Adding sodium carbonate regulation system pH value is 7.5～8.0, and control system temperature is 25 DEG C～30 DEG C, and dissolved oxygen is
3mg/L, cultivates to SV30Reaching 15%, carry out continuum micromeehanics, this process needs more than 6 days.
Cultural method the most according to claim 7, it is characterised in that this process needs 8～12 days.
Cultural method the most according to claim 1, it is characterised in that described sludge acclimatization phase process is:
A small amount of and be continuously injected into industrial wastewater, from 2m3/ h starts, and is a water yield Load lifting cycle with 3 days,
With 2m3/ h for water inlet increase gradient, and in this process control supernatant C OD≤250mg/L,
NH4 +While-N≤10mg/L, volatile phenol≤20mg/L, the input amount keeping glucose is constant, by adding
Adding sodium carbonate regulation system pH value is 7.5～8.0, and control system temperature is at 25 DEG C～30 DEG C, and dissolved oxygen is
3mg/L, cultivates to SV30Reaching 20%, this process needs more than 6 days.
Cultural method the most according to claim 9, it is characterised in that this process needs 8～12 days.
11. cultural methods according to claim 1, it is characterised in that described mud maturity period process
For: at SV30After reaching 20%, under conditions of keeping nutrient source proportioning constant, with the gradient of 40kg/d gradually
The amount reducing glucose adds to stopping, control test index bio-chemical effluent COD≤250mg/L,
NH4 +-N≤5mg/L, volatile phenol≤5mg/L, be 7.5～8.0 by adding sodium carbonate regulation system pH value,
Control system temperature is at 25 DEG C～30 DEG C, and dissolved oxygen is 4mg/L, increase influent load to reaching Design cooling load,
Cultivate to SV30Reaching 30%, now, the mud in reactor is the activated sludge of cultivation, and this process needs 5
More than it.
12. cultural methods according to claim 11, it is characterised in that this process needs 5～9 days.
13. cultural methods according to claim 1, it is characterised in that comprise the following steps:
(1) mud growth period
Injected clear water is at 1/3rd of reactor in the reactor, adds a certain amount of mud in reactor
Bacterial classification, mud comes from sanitary sewage so that it is SV30Not less than 2%, add what coke powder grew as mud
Long-Term Sorption nucleus；During vexed exposure, it is provided that nutrient source be glucose, sodium phosphate, proportioning is
COD:N:P=200:5:1, the dosage of glucose is 100-150kg/d, and passs with the gradient of 20-25kg/d
Increase, control test index supernatant C OD≤250mg/L, NH4 +-N≤10mg/L, volatile phenol≤20mg/L；
Meanwhile, being 7.5～8.0 by adding sodium carbonate regulation system pH value, control system temperature is 25 DEG C
～30 DEG C, dissolved oxygen is 1～2mg/L, works as SV30Stopping vexed exposure after reaching 8-12%, this process needs 2～3 days；
(2) the mud laundering period
After vexed exposure terminates, in the way of a small amount of interval, inject the industrial wastewater after dilution, described industrial wastewater
COD is 4000～5000mg/L, and inflow is 2m3/ h, intakes first day and at interval of water inlet in 4 hours and holds
Continuous 2 hours, intake and within second day, rise at interval of water inlet in 2 hours and continue 2 hours, meanwhile, keeping nutrition
Be gradually increased the amount of glucose, sodium phosphate under conditions of the proportioning of source, the amount of glucose with the gradient of 5kg/d by
Step be incremented by, during control supernatant C OD≤250mg/L, NH4 +-N≤10mg/L, volatile phenol
≤ 20mg/L, is 7.5～8.0 by adding sodium carbonate regulation system pH value, and control system temperature is 25 DEG C
～30 DEG C, dissolved oxygen is 3mg/L, cultivates to SV30Reaching 15%, carry out continuum micromeehanics, this process needs 10
My god；
(3) the sludge acclimatization phase
It is continuously injected into industrial wastewater on a small quantity, from 2m3/ h starts, and is a water yield Load lifting week with 3 days
Phase, with 2m3/ h for water inlet increase gradient, and in this process control supernatant C OD≤250mg/L,
NH4 +-N≤10mg/L, volatile phenol≤20mg/L, the input amount simultaneously keeping glucose is constant, by adding
Sodium carbonate regulation system pH value is 7.5～8.0, and control system temperature is at 25 DEG C～30 DEG C, and dissolved oxygen is
3mg/L, cultivates to SV30Reaching 20%, this process needs 10 days；
(4) the mud maturity period
At SV30After reaching 20%, under conditions of keeping nutrient source proportioning constant, with the gradient of 40kg/d gradually
The amount reducing glucose adds to stopping, control test index bio-chemical effluent COD≤250mg/L,
NH4 +-N≤5mg/L, volatile phenol≤5mg/L, be 7.5～8.0 by adding sodium carbonate regulation system pH value,
Control system temperature is at 25 DEG C～30 DEG C, and dissolved oxygen is 4mg/L, increase influent load to reaching Design cooling load,
Cultivate to SV30Reaching 30%, now, the mud in reactor is the activated sludge of cultivation, and this process needs 7
My god.
14. cultural methods according to claim 1, it is characterised in that described industrial wastewater is for containing height
Concentration hardly degraded organic substance, the waste water of high ammonia nitrogen.
15. cultural methods according to claim 14, it is characterised in that described industrial wastewater is coking
Waste water.
16. cultural methods according to claim 15, it is characterised in that the water quality of described coking chemical waste water
For pH:7-9, COD:4000-5000mg/L, phenol: 800-1000mg/L, cyanogen: 15～20mg/L, NH4 +-N:
200～300mg/L.
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| CN111847661A (en) * | 2020-07-09 | 2020-10-30 | 广东省源天工程有限公司 | Activated sludge inoculation and bacterium cultivation method |
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