CN104445603B - The method that upflow-type reactor denitrification starts fast - Google Patents
The method that upflow-type reactor denitrification starts fast Download PDFInfo
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Abstract
The present invention relates to the method that upflow-type reactor denitrification starts fast, in the agitated pool of upflow-type reactor outside, denitrification mud kind mud is domesticated for denitrification mud, then denitrification mud is imported upflow-type reactor, upflow-type reactor imports water inlet immediately, starts rapidly upflow-type reactor and carries out anti-nitration reaction; Described agitated pool is the mechanical stirring pond of band stirrer.The method that upflow-type reactor denitrification of the present invention starts fast, in upflow-type reactor outside, denitrification mud kind mud is domesticated for denitrification mud, then denitrification mud is imported upflow-type reactor, upflow-type reactor can be started rapidly, eliminate cotton-shaped mud start the upflow-type reactor initial stage occur Mud up-floating, loss problem.
Description
Technical field
The present invention relates to the biological treatment of waste water or sewage, is the method that upflow-type reactor denitrification starts fast specifically.Espespecially containing organic can biochemical waste water carry out in upflow-type reactor denitrification biological treatment time, the method that in reactor, anti-nitration reaction starts fast.
Background technology
Upflow-type reactor (flow lifting type anaerobic reactor) is generally used for high-enriched organics process field, has experiment to find to add nitrate radical in its system in recent years, also has anti-nitration reaction and occur, therefore can carry out anti-nitration reaction with upflow-type reactor.Anti-nitration reaction also appears in the anoxic pond of anaerobic-aerobic mode Treating Municipal Sewage.
But in the application of this technology, the startup of upflow-type reactor is a major issue.Common Starting mode is: use the granule sludge that anaerobic acclimation is good to start upflow-type reactor as kind of mud, or upflow-type reactor complete anaerobic reaction start basis on restart anti-nitration reaction, there is the defect that kind of mud source is subject to apparent availability restriction in front a kind of mode, rear one then starts excessive cycle.
Room experiment finds by experiment: directly start in the process of upflow-type reactor with floc sludge, the problem there is floc sludge caking, floating, run off with water outlet.
200910200765.9 be also will carry out pre-treatment to cotton-shaped kind of mud, but still will air-blowing inner member be increased to upflow-type reactor and adopt water inlet pipe to enter air facility, could start smoothly, may mainly due to pre-treatment degree in upflow-type reactor or in plastic greenhouse not, floc sludge On The Floating can not be solved.
" reducing load to improve the stability (environmental engineering journal 2009 (3) 8) of denitrification granular sludge " report, the stability of denitrification granular sludge affects by load range, also has possibility that is broken and that float in operation.
200510027912.9 propose the denitrification granular sludge using and float, to the operation scheme of flowing under employing waste water.But in general granule sludge floats and flows out mainly particle surface or inside with water and have bubble, bubble in current again easily and granule sludge be separated into the mud that can sink, and this patent does not provide the granule sludge how being trained and can floating always.
Above variety of problems limits the application of upflow-type reactor anti-nitration reaction aspect in the industry.
Summary of the invention
For the defect existed in prior art, the object of the present invention is to provide the method that upflow-type reactor denitrification starts fast, in upflow-type reactor outside, denitrification mud kind mud is domesticated for denitrification mud, then denitrification mud is imported upflow-type reactor, anti-nitration reaction can be started rapidly in upflow-type reactor.
For reaching above object, the technical scheme that the present invention takes is:
The method that upflow-type reactor denitrification starts fast, it is characterized in that: in the agitated pool of upflow-type reactor outside, denitrification mud kind mud is domesticated for denitrification mud, then denitrification mud is imported upflow-type reactor, upflow-type reactor imports water inlet immediately, starts rapidly upflow-type reactor and carries out anti-nitration reaction;
Described agitated pool is the mechanical stirring pond of band stirrer.
On the basis of technique scheme, the volume in described mechanical stirring pond is 1/3 ~ 3 times of upflow-type reactor volume, and power of agitator is 20 ~ 40W/m
3, mixing speed is 20 ~ 500 turns/min.
On the basis of technique scheme, the mixture that described denitrification mud kind mud is municipal sewage plant mud, industrial effluent treatment plant's mud, anaerobic reactor discharge one of any or arbitrary above-mentioned mud of two or more proportioning in mud.
On the basis of technique scheme, the water quality characteristic of the water inlet of domestication kind of mud water inlet used and importing upflow-type reactor is:
PH value is between 6 ~ 9;
Have biodegradability, biodegradability BOD and COD ratio represents, BOD and COD ratio B/C >=0.3;
In the water inlet of described domestication kind of mud water inlet used and importing upflow-type reactor, all containing the oxidizing substance needed for denitrification and/or the reducing substances needed for denitrification.
On the basis of technique scheme, described domestication kind of a mud water inlet used carrys out self-contained high-valence state nitrogen and/or contains organic one or more strands of waste water, or carrys out the water outlet of waste water after the process of aerobic treatment facility of self-contained lower valency nitrogen; Described high-valence state nitrogen is nitrate nitrogen and/or cultured water, and described lower valency nitrogen is that inorganic nitrogen is if the nitrogen in ammonia nitrogen and/or cultured water and/or itrogenous organic substance is as blood urea nitrogen.
On the basis of technique scheme, when taming kind of mud, in agitated pool, add iron compound, make the muddy water mixed solution in agitated pool always can not filtration residue amount reach 3g/L ~ 9g/L, ferro element amount reach always can not filtration residue amount 1 ~ 31%;
Described iron compound is: containing ironic hydroxide or ferrous sulfate or ferric sulfate or iron(ic) chloride or containing the suspension liquid of the arbitrary above-mentioned substance of ratio or liquid or solid or waste liquid or waste water.
On the basis of technique scheme, when domestication kind of mud water inlet used and denitrification mud kind mud all add agitated pool, and after iron compound adds in agitated pool, get different positions muddy water mixed solution in agitated pool, what measure muddy water mixed solution always can not filtration residue amount and ferro element amount.
On the basis of technique scheme, when domestication kind of mud water inlet used and denitrification mud kind mud all add agitated pool, and after iron containing compounds adds in agitated pool, get different positions muddy water mixed solution in agitated pool, filter muddy water mixed solution with middling speed quantitative paper or 0.45 micron membrane filter and obtain filtrate, measure COD content, the high-valence state nitrogen content of filtrate; The COD content of filtrate should reach 500mg/L ~ 4000mg/L, high-valence state nitrogen content should reach 200mg/L ~ 1000mg/L.
On the basis of technique scheme, when the COD content of filtrate is lower than 500mg/L ~ 4000mg/L, the reducing substances needed for denitrification need be added in agitated pool; When high-valence state nitrogen content is lower than 200mg/L ~ 1000mg/L, the oxidizing substance needed for denitrification need be added in agitated pool or in upflow-type reactor.
On the basis of technique scheme, described in the oxidizing substance that adds be: containing the solid of high-valence state nitrogen or solution or waste liquid or solid waste; Described high-valence state nitrogen is nitrate nitrogen and/or cultured water;
The described reducing substances added is for containing organic liquid or solid or waste liquid or solid waste.
On the basis of technique scheme, described interpolation containing the solid of high-valence state nitrogen or solution or waste liquid or solid waste be: containing SODIUMNITRATE or saltpetre or Sodium Nitrite or potassium nitrite or containing the solid of the arbitrary above-mentioned substance of ratio or solution or waste liquid or solid waste.
On the basis of technique scheme, described interpolation containing organic liquid or solid or waste liquid or solid waste be: containing methyl alcohol or ethanol or formic acid or acetic acid or sodium formiate or sodium acetate or containing the liquid or solid of the arbitrary above-mentioned substance of ratio or waste liquid or solid waste.
On the basis of technique scheme, when denitrification mud kind mud being domesticated for denitrification mud in the agitated pool of upflow-type reactor outside, pH value >=6.5 in agitated pool need be ensured,
Realize in the following manner:
Mode one, by adding pH value >=6.5 in alkaline matter guarantee agitated pool in agitated pool,
Mode two, ensures pH value >=6.5 in agitated pool by the pH value improving domestication kind of mud water inlet used.
On the basis of technique scheme, described alkaline matter is sodium carbonate solution or sodium hydroxide solution or sodium hydrogen carbonate solution or the solution containing the arbitrary above-mentioned alkaline matter of ratio.
On the basis of technique scheme, by the concrete steps that denitrification mud kind mud is domesticated for denitrification mud be:
Step 1, in agitated pool, add the water inlet used of domestication kind of mud;
Step 2, the stirrer opened in agitated pool;
Step 3, in agitated pool, add iron containing compounds;
PH >=6.5 in step 4, guarantee agitated pool;
Step 5, in agitated pool, add denitrification mud kind mud;
Step 6, get different positions muddy water mixed solution in agitated pool and measure: what measure muddy water mixed solution always can not filtration residue amount, ferro element amount; Filter muddy water mixed solution with middling speed quantitative paper or 0.45 micron membrane filter and obtain filtrate, measure COD content, the high-valence state nitrogen content of filtrate;
If the inadequate 200mg/L ~ 1000mg/L of high-valence state nitrogen concentration, then after step 2, add oxidizing substance regulate; If the inadequate 500mg/L ~ 4000mg/L of COD concentration, then after step 2, add reducing substances regulate; Then high-valence state nitrogen concentration and the COD concentration of muddy water mixed solution filtrate is redeterminated;
Step 7, continue to stir the muddy water mixed solution in agitated pool, be domesticated for denitrification mud to denitrification mud kind mud;
Step 8, stopping stir, and leave standstill 0.5 ~ 3h, the lower floor's muddy water mixed solution settled down in agitated pool is denitrification mud.
On the basis of technique scheme, the judge index that denitrification mud kind mud is domesticated for denitrification mud is, in agitated pool, the COD of mixed solution filtrate is down to step 6 and finally measures 10% ~ 40% of COD value.
On the basis of technique scheme, denitrification mud imports in reactor by bottom upflow-type reactor.
On the basis of technique scheme, denitrification mud is imported in reactor by upflow-type reactor top.
On the basis of technique scheme, the water inlet importing upflow-type reactor imports reactor by bottom upflow-type reactor.
On the basis of technique scheme, denitrification mud is used bottom upflow-type reactor and is joined water-in by bottom importing reactor.
On the basis of technique scheme, denitrification mud is imported in reactor by mud inlet independent bottom upflow-type reactor.
On the basis of technique scheme, the concrete steps that rapid startup upflow-type reactor carries out anti-nitration reaction are:
Step 1, the lower floor's muddy water mixed solution importing upflow-type reactor will settled down in agitated pool, this lower floor's muddy water mixed solution is denitrification mud;
Step 2, importing water inlet in upflow-type reactor, upflow-type reactor is aerogenesis immediately, and mud seldom runs off, and denitrification starts smoothly.
The method that upflow-type reactor denitrification of the present invention starts fast, in upflow-type reactor outside, denitrification mud kind mud is domesticated for denitrification mud, then denitrification mud is imported upflow-type reactor, upflow-type reactor can be started rapidly, eliminate cotton-shaped mud start the upflow-type reactor initial stage occur Mud up-floating, loss problem.
Accompanying drawing explanation
The present invention has following accompanying drawing:
Fig. 1 agitated pool process flow diagram,
Fig. 2 upflow-type reactor process flow diagram.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Technique of the present invention is applicable to upflow-type reactor, is best suited for flow lifting type sludge bed reactor.
As shown in Figure 1, 2, the method that upflow-type reactor denitrification of the present invention starts fast, comprises the following steps:
In the agitated pool of upflow-type reactor outside, denitrification mud kind mud is domesticated for denitrification mud, then denitrification mud is imported upflow-type reactor, upflow-type reactor imports water inlet immediately, starts rapidly upflow-type reactor and carries out anti-nitration reaction;
Described agitated pool is the mechanical stirring pond of band stirrer;
The water inlet of described importing upflow-type reactor can be containing organic can biochemical waste water.
On the basis of technique scheme, the volume in described mechanical stirring pond is 1/3 ~ 3 times of upflow-type reactor volume, and power of agitator is 20 ~ 40W/m
3, mixing speed is 20 ~ 500 turns/min.
Mechanical stirring pond, after denitrification mud kind mud is tamed and derived, can be also used as the homogeneous pond of the water inlet of preparing described importing upflow-type reactor.
On the basis of technique scheme, the mixture that described denitrification mud kind mud is municipal sewage plant mud (municipal sewage plant mud, as aeration tank mud, digester mud, excess sludge or dehydration excess sludge), industrial effluent treatment plant's mud, anaerobic reactor discharge one of any or arbitrary above-mentioned mud of two or more proportioning in mud.
On the basis of technique scheme, when denitrification mud kind mud being domesticated for denitrification mud in the agitated pool of upflow-type reactor outside, domestication kind of a mud water inlet used has biodegradability, and biodegradability BOD and COD ratio represents, BOD and COD ratio (B/C) >=0.3
The pH value of described domestication kind of mud water inlet used is between 6 ~ 9.
On the basis of technique scheme, the water inlet of described importing upflow-type reactor has biodegradability, and biodegradability BOD and COD ratio represents, BOD and COD ratio (B/C) >=0.3,
The pH value of the water inlet of described importing upflow-type reactor is between 6 ~ 9.
In the water inlet of described domestication kind of mud water inlet used and importing upflow-type reactor, all containing the oxidizing substance needed for denitrification and/or the reducing substances needed for denitrification.
On the basis of technique scheme, described domestication kind of a mud water inlet used carrys out self-contained high-valence state nitrogen and/or contains organic one or more strands of waste water, or carrys out the water outlet of waste water after the process of aerobic treatment facility of self-contained lower valency nitrogen; Described high-valence state nitrogen is nitrate nitrogen and/or cultured water, described lower valency nitrogen be inorganic nitrogen (as ammonia nitrogen and/or cultured water and /) or itrogenous organic substance in nitrogen (as blood urea nitrogen).
On the basis of technique scheme, when taming kind of mud, in agitated pool, add iron compound, make the muddy water mixed solution in agitated pool always can not filtration residue amount reach 3g/L ~ 9g/L, ferro element amount reach always can not filtration residue amount 1 ~ 31%;
Described iron compound is: containing ironic hydroxide or ferrous sulfate or ferric sulfate or iron(ic) chloride or containing the suspension liquid of the arbitrary above-mentioned substance of ratio or liquid or solid or waste liquid or waste water.
When domestication kind of mud water inlet used and denitrification mud kind mud all add agitated pool, and after iron compound adds in agitated pool, get different positions muddy water mixed solution in agitated pool, what measure muddy water mixed solution always can not filtration residue amount and ferro element amount.
On the basis of technique scheme, when domestication kind of mud water inlet used and denitrification mud kind mud all add agitated pool, and after iron containing compounds adds in agitated pool, get different positions muddy water mixed solution in agitated pool, filter muddy water mixed solution with middling speed quantitative paper or 0.45 micron membrane filter and obtain filtrate, measure COD content, the high-valence state nitrogen content of filtrate; The COD content of filtrate should reach 500mg/L ~ 4000mg/L, high-valence state nitrogen content should reach 200mg/L ~ 1000mg/L.
The content of high-valence state nitrogen corresponds to the oxidisability thing needed for denitrification, and COD value corresponds to the reducing substances needed for denitrification.
On the basis of technique scheme, when the COD content of filtrate is lower than 500mg/L ~ 4000mg/L, the reducing substances needed for denitrification need be added in agitated pool; When high-valence state nitrogen content is lower than 200mg/L ~ 1000mg/L, the oxidizing substance needed for denitrification need be added in agitated pool or in upflow-type reactor.
The described oxidizing substance added is: containing the solid of high-valence state nitrogen or solution or waste liquid or solid waste; Described high-valence state nitrogen is nitrate nitrogen and/or cultured water;
The described reducing substances added is for containing organic liquid or solid or waste liquid or solid waste.
On the basis of technique scheme, described interpolation containing the solid of high-valence state nitrogen or solution or waste liquid or solid waste be: containing SODIUMNITRATE or saltpetre or Sodium Nitrite or potassium nitrite or containing the solid of the arbitrary above-mentioned substance of ratio or solution or waste liquid or solid waste.
On the basis of technique scheme, described interpolation containing organic liquid or solid or waste liquid or solid waste be: containing methyl alcohol or ethanol or formic acid or acetic acid or sodium formiate or sodium acetate or containing the liquid or solid of the arbitrary above-mentioned substance of ratio or waste liquid or solid waste.
On the basis of technique scheme, when denitrification mud kind mud being domesticated for denitrification mud in the agitated pool of upflow-type reactor outside, pH value >=6.5 in agitated pool need be ensured,
Realize in the following manner:
Mode one, ensures pH value >=6.5 in agitated pool by adding alkaline matter in agitated pool, adds alkaline matter and can also to eliminate in agitated pool in muddy water mixed solution iron ion to the suppression of anti-nitration reaction,
Mode two, ensures pH value >=6.5 in agitated pool by the pH value improving domestication kind of mud water inlet used.
On the basis of technique scheme, described alkaline matter is sodium carbonate solution or sodium hydroxide solution or sodium hydrogen carbonate solution or the solution containing the arbitrary above-mentioned alkaline matter of ratio.
On the basis of technique scheme, by the concrete steps that denitrification mud kind mud is domesticated for denitrification mud be:
Step 1, in agitated pool, add the water inlet used of domestication kind of mud;
Step 2, the stirrer opened in agitated pool;
Step 3, in agitated pool, add iron containing compounds;
PH >=6.5 in step 4, guarantee agitated pool;
For the system adding ironic hydroxide suspension liquid, as long as ensure acclimation sludge inlet flow-patterm >=6.5 used;
For the system adding sulfur acid ferrous iron or ferric sulfate or iron(ic) chloride, regulate its pH value to >=6.5 by adding alkaline matter (sodium carbonate solution or sodium hydroxide solution or sodium hydrogen carbonate solution) in agitated pool, it is higher that iron adds concentration, and alkaline matter add-on is larger;
Step 5, in agitated pool, add denitrification mud kind mud;
After adding iron containing compounds and denitrification mud kind mud, muddy water mixed solution in agitated pool always can not filtration residue amount (namely water sample stays material on the filter after middling speed middling speed quantitative paper filters, in 103 ~ 105 DEG C of amounts obtained that dry to constant weight) 3g/L ~ 9g/L should be reached, ferro element amount (add-on of ferro element characterizes, see GB14506.5-2010 with total iron) should reach always can not filtration residue amount 1 ~ 31%;
Step 6, get different positions muddy water mixed solution in agitated pool and measure:
What measure muddy water mixed solution always can not filtration residue amount, ferro element amount; In agitated pool, muddy water mixed solution always filtration residue amount and ferro element amount can not should reach numerical range described in step 5;
Filter muddy water mixed solution with middling speed quantitative paper or 0.45 micron membrane filter and obtain filtrate, measure COD content, the high-valence state nitrogen content of filtrate; Its high-valence state nitrogen content should reach 200mg/L ~ 1000mg/L, and COD should reach 500mg/L ~ 4000mg/L;
If the inadequate 200mg/L ~ 1000mg/L of high-valence state nitrogen concentration, then add (such as adding after step 2) oxidizing substance and regulate, refer to aforementioned;
If the inadequate 500mg/L ~ 4000mg/L of COD concentration, then add (such as adding after step 2) reducing substances and regulate, refer to aforementioned;
Then high-valence state nitrogen concentration and the COD concentration of muddy water mixed solution filtrate is redeterminated;
Step 7, continue to stir the muddy water mixed solution in agitated pool, when the mixed solution middling speed quantitative paper sampled in agitated pool or 0.45 micron membrane filter filter, when liquor C OD is down to 10% ~ 40% of initial value (step 6 finally measures COD value), denitrification mud kind mud is domesticated for denitrification mud;
Step 8, stopping stir, and leave standstill 0.5 ~ 3h, the lower floor's muddy water mixed solution settled down in agitated pool is denitrification mud.The judge index that denitrification mud kind mud is domesticated for denitrification mud is, in agitated pool, the COD of mixed solution filtrate is down to step 6 and finally measures 10% ~ 40% of COD value.
Denitrification mud imports in reactor by bottom upflow-type reactor.Or denitrification mud is imported in reactor by upflow-type reactor top.The water inlet importing upflow-type reactor imports reactor by bottom upflow-type reactor.
When denitrification mud with import the water inlet of upflow-type reactor by when importing reactor bottom upflow-type reactor, denitrification mud is used bottom upflow-type reactor and is joined water-in by bottom importing reactor, or denitrification mud is imported in reactor by mud inlet independent bottom upflow-type reactor.
On the basis of technique scheme, the concrete steps that rapid startup upflow-type reactor carries out anti-nitration reaction are:
Step 1, the lower floor's muddy water mixed solution importing upflow-type reactor will settled down in agitated pool, this lower floor's muddy water mixed solution is denitrification mud;
Note try not supernatant liquor to import reactor, that can reduce sludge concentration in upflow-type reactor, and keep sludge concentration in upflow-type reactor try one's best height be conducive to start;
After denitrification mud kind mud is tamed and derived, agitated pool can be also used as the homogeneous pond of preparing described water inlet;
Step 2, importing water inlet in upflow-type reactor (can be intake by agitated pool preparation), upflow-type reactor is aerogenesis immediately, and mud seldom runs off, and denitrification starts smoothly.
The method of the invention, need not use or turn out granule sludge and start upflow-type reactor, save startup upflow-type reactor denitrification required time.The existing upflow-type reactor facility of sewage work can be utilized, the components such as stirring, air-blowing, outer circulation need not be increased to upflow-type reactor, save facility investment.
It is below specific embodiment.
Embodiment 1
With municipal sewage plant dehydration excess sludge as denitrification mud kind mud, tame into denitrification mud through the waste water containing cultured water, start upflow-type reactor.
Agitated pool volume is 1/3 times of upflow-type reactor volume.In agitated pool, add domestication kind of mud water inlet used, pH is 6.5; Turn on agitator, specified power of agitator is 40W/m
3, mixing speed is set as 500 turns/min; Sodium Nitrite is added in agitated pool; Add the suspension liquid containing ironic hydroxide; Add the rear excess sludge of municipal sewage plant dehydration, measuring its water ratio scope is 78 ~ 85%, and its Adding Way is: after being no more than the dehydration of 3 days the storage time, excess sludge is mixed into domestication kind of a mud water inlet used, pumps into agitated pool through sludge delivery pump; In agitated pool muddy water namely measure after mixing in agitated pool in muddy water mixed solution always can not filtration residue (namely water sample stays material on the filter after middling speed quantitative paper filters, in 103 ~ 105 DEG C of amounts obtained that dry to constant weight) be 9g/L, it is 60ml/g that the mud of muddy water mixed solution amasss index (SVI), total iron content (measuring method is see GB14506.5-2010) in muddy water mixed solution is 450mg/L, for can not filtration residue amount 5%; Filter muddy water mixed solution with middling speed quantitative paper and obtain filtrate, measuring its COD is 4000mg/L, and cultured water content is 1000mg/L, B/C=0.3.
Continue in pond, to stir muddy water mixed solution after 3 days, get muddy water mixed solution in agitated pool, filter with middling speed quantitative paper and obtain filtrate, measuring its COD and be down to 1600mg/L, is 40% of initial value, stops stirring, leave standstill 1.5h, the lower floor's muddy water mixed solution settled down is imported upflow-type reactor.
Import water inlet to upflow-type reactor, this influent COD is 500mg/L, and cultured water content is 500mg/L, B/C=0.3 upflow-type reactor aerogenesis immediately, and mud seldom runs off, and denitrification starts smoothly.
Embodiment 2
Discharge the mixture of mud with municipal sewage plant digester mud and anaerobic reactor as denitrification mud kind mud, tame into denitrification mud through the waste water containing nitrate nitrogen, start upflow-type reactor.
Agitated pool volume is 1 times of upflow-type reactor volume.Domestication kind of mud water inlet used is added in agitated pool; 8wt% sodium nitrate solution is added in agitated pool; Turn on agitator, power of agitator is 30W/m
3, mixing speed is 100 turns/min; The liquid mixture containing methyl alcohol, ethanol is added in agitated pool; Add the waste water of chloride containing iron; Adding sodium hydrogen carbonate solution regulates its pH to be 6.5; Add the mixture that municipal sewage plant digester mud and anaerobic reactor discharge mud; In agitated pool muddy water mix in rear mensuration agitated pool in muddy water mixed solution always can not filtration residue (namely water sample stays material on filter paper after middling speed quantitative paper filters, in 103 ~ 105 DEG C of amounts obtained that dry to constant weight) be 4.5g/L, it is 80ml/g that the mud of muddy water mixed solution amasss index (SVI), total iron content (measuring method is see GB14506.5-2010) in muddy water mixed solution is 45mg/L, for can not filtration residue amount 1%; Filter muddy water mixed solution with middling speed quantitative paper and obtain filtrate, measuring its COD is 1500mg/L, and nitrate nitrogen content is 400mg/L, and cultured water content is 200mg/L, B/C=0.8.
In pond, stir muddy water mixed solution after 3 days, get muddy water mixed solution in agitated pool, filter with middling speed quantitative paper and obtain filtrate, measuring its COD and be down to 260mg/L, is 17% of initial value, stops stirring, leave standstill 0.5h, the lower floor's muddy water mixed solution settled down is imported upflow-type reactor.
Import water inlet to upflow-type reactor, this influent COD is 500mg/L, and nitrate nitrogen content is 200mg/L, B/C=0.5 upflow-type reactor aerogenesis immediately, and mud seldom runs off, and denitrification starts smoothly.
Embodiment 3
With the mixture of municipal sewage plant excess sludge and industrial effluent treatment plant aeration tank mud as denitrification mud kind mud through taming into denitrification mud containing nitrate nitrogen with the waste water of cultured water, start upflow-type reactor.
Agitated pool volume is 3 times of upflow-type reactor volume, adds domestication kind of mud water inlet used in agitated pool; Turn on agitator, power of agitator is 30W/m
3, mixing speed is 20 turns/min; The solid mixture containing sodium formiate, sodium ethylate is added in agitated pool; Add ferrous sulfate powder, add sodium carbonate solution and regulate its pH to be 8; Add municipal sewage plant excess sludge and industrial effluent treatment plant's aeration tank mud; In agitated pool muddy water namely measure after mixing in agitated pool in muddy water mixed solution always can not filtration residue (namely water sample stays material on the filter after middling speed quantitative paper filters, in 103 ~ 105 DEG C of amounts obtained that dry to constant weight) be 3g/L, it is 100ml/g that the mud of muddy water mixed solution amasss index (SVI), total iron content (measuring method is see GB14506.5-2010) in muddy water mixed solution is 660mg/L, for can not filtration residue amount 22%; Filter muddy water mixed solution with middling speed quantitative paper and obtain filtrate, measuring its COD is 500mg/L, and nitrate nitrogen content is 200mg/L, B/C=0.9.
In pond, stir muddy water mixed solution after 3 days, get muddy water mixed solution in agitated pool, filter with middling speed quantitative paper and obtain filtrate, measuring its COD and be down to 50mg/L, is 10% of initial value, stops stirring, leave standstill 3h, the lower floor's muddy water mixed solution settled down is imported upflow-type reactor.
Import water inlet to upflow-type reactor, this influent COD is 150mg/L, and nitrate nitrogen content is 60mg/L, B/C=0.6 upflow-type reactor aerogenesis immediately, and mud seldom runs off, and denitrification starts smoothly.
Embodiment 4
Tame into denitrification mud as denitrification mud kind mud through the waste water containing nitrate nitrogen with industrial effluent treatment plant's excess sludge, start upflow-type reactor.
Agitated pool volume is 2 times of upflow-type reactor volume, adds domestication kind of mud water inlet used in agitated pool; Turn on agitator, power of agitator is 20W/m
3, mixing speed is 20 turns/min; Add ferric sulfate powder, add sodium hydroxide solution and regulate its pH to be 7; Add industrial effluent treatment plant's excess sludge (without processed); In agitated pool muddy water namely measure after mixing in agitated pool in muddy water mixed solution always can not filtration residue (namely water sample stays material on the filter after middling speed quantitative paper filters, in 103 ~ 105 DEG C of amounts obtained that dry to constant weight) be 7.5g/L, it is 105ml/g that the mud of muddy water mixed solution amasss index (SVI), total iron content (measuring method is see GB14506.5-2010) in muddy water mixed solution is 2325mg/L, for can not filtration residue amount 31%; Filter muddy water mixed solution with middling speed quantitative paper and obtain filtrate, measuring its COD is 3000mg/L, and nitrate nitrogen content is 1000mg/L, and cultured water content is 200mg/L, B/C=0.5.
In pond, stir muddy water mixed solution after 2 days, get muddy water mixed solution in agitated pool, filter with middling speed quantitative paper and obtain filtrate, measuring its COD and be down to 600mg/L, is 20% of initial value, stops stirring, leave standstill 2h, the lower floor's muddy water mixed solution settled down is imported upflow-type reactor.
Import water inlet to upflow-type reactor, this influent COD is 4000mg/L, and nitrate nitrogen content is 1000mg/L, B/C=0.5 upflow-type reactor aerogenesis immediately, and mud seldom runs off, and denitrification starts smoothly.
The content be not described in detail in this specification sheets belongs to the known prior art of professional and technical personnel in the field.
Claims (22)
1. the method that starts fast of upflow-type reactor denitrification, it is characterized in that: in the agitated pool of upflow-type reactor outside, denitrification mud kind mud is domesticated for denitrification mud, then denitrification mud is imported upflow-type reactor, upflow-type reactor imports water inlet immediately, starts rapidly upflow-type reactor and carries out anti-nitration reaction;
Described agitated pool is the mechanical stirring pond of band stirrer;
By the concrete steps that denitrification mud kind mud is domesticated for denitrification mud be:
Step 1, in agitated pool, add the water inlet used of domestication kind of mud;
Step 2, the stirrer opened in agitated pool;
Step 3, in agitated pool, add iron containing compounds;
PH >=6.5 in step 4, guarantee agitated pool;
Step 5, in agitated pool, add denitrification mud kind mud;
Step 6, get different positions muddy water mixed solution in agitated pool and measure: what measure muddy water mixed solution always can not filtration residue amount, ferro element amount; Filter muddy water mixed solution with middling speed quantitative paper or 0.45 micron membrane filter and obtain filtrate, measure COD content, the high-valence state nitrogen content of filtrate, described high-valence state nitrogen is nitrate nitrogen and/or cultured water;
Step 7, continue to stir the muddy water mixed solution in agitated pool, be domesticated for denitrification mud to denitrification mud kind mud;
Step 8, stopping stir, and leave standstill 0.5 ~ 3h, the lower floor's muddy water mixed solution settled down in agitated pool is denitrification mud.
2. the method that starts fast of upflow-type reactor denitrification as claimed in claim 1, it is characterized in that: the volume in described mechanical stirring pond is 1/3 ~ 3 times of upflow-type reactor volume, power of agitator is 20 ~ 40W/m
3, mixing speed is 20 ~ 500 turns/min.
3. the method that starts fast of upflow-type reactor denitrification as claimed in claim 1, is characterized in that: the mixture that described denitrification mud kind mud is municipal sewage plant mud, industrial effluent treatment plant's mud, anaerobic reactor discharge one of any or arbitrary above-mentioned mud of two or more proportioning in mud.
4. the method that starts fast of upflow-type reactor denitrification as claimed in claim 1, is characterized in that, the water quality characteristic of domestication kind of mud water inlet used and the water inlet that imports upflow-type reactor is:
PH value is between 6 ~ 9;
Have biodegradability, biodegradability BOD and COD ratio represents, BOD and COD ratio B/C >=0.3;
In the water inlet of described domestication kind of mud water inlet used and importing upflow-type reactor, all containing the oxidizing substance needed for denitrification and/or the reducing substances needed for denitrification.
5. the method that starts fast of upflow-type reactor denitrification as claimed in claim 4, it is characterized in that: described domestication kind of a mud water inlet used carrys out self-contained high-valence state nitrogen and/or contains organic one or more strands of waste water, or carrys out the water outlet of waste water after the process of aerobic treatment facility of self-contained lower valency nitrogen; Described high-valence state nitrogen is nitrate nitrogen and/or cultured water, and described lower valency nitrogen is the nitrogen in inorganic nitrogen and/or itrogenous organic substance.
6. the method that starts fast of upflow-type reactor denitrification as claimed in claim 1, it is characterized in that: when mud is planted in domestication, in agitated pool, add iron compound, make the muddy water mixed solution in agitated pool always can not filtration residue amount reach 3g/L ~ 9g/L, ferro element amount reach always can not filtration residue amount 1 ~ 31%;
Described iron compound is: containing ironic hydroxide or ferrous sulfate or ferric sulfate or iron(ic) chloride or the liquid or solid containing the arbitrary above-mentioned substance of ratio.
7. the method that starts fast of upflow-type reactor denitrification as claimed in claim 6, it is characterized in that: when domestication kind of mud water inlet used and denitrification mud kind mud all add agitated pool, and after iron compound adds in agitated pool, get different positions muddy water mixed solution in agitated pool, measure muddy water mixed solution always can not filtration residue amount and ferro element amount.
8. the method that starts fast of upflow-type reactor denitrification as claimed in claim 6, it is characterized in that: when domestication kind of mud water inlet used and denitrification mud kind mud all add agitated pool, and after iron containing compounds adds in agitated pool, get different positions muddy water mixed solution in agitated pool, filter muddy water mixed solution with middling speed quantitative paper or 0.45 micron membrane filter and obtain filtrate, measure COD content, the high-valence state nitrogen content of filtrate; The COD content of filtrate should reach 500mg/L ~ 4000mg/L, high-valence state nitrogen content should reach 200mg/L ~ 1000mg/L.
9. the method that starts fast of upflow-type reactor denitrification as claimed in claim 8, is characterized in that: when the COD content of filtrate is lower than 500mg/L ~ 4000mg/L, need add the reducing substances needed for denitrification in agitated pool; When high-valence state nitrogen content is lower than 200mg/L ~ 1000mg/L, the oxidizing substance needed for denitrification need be added in agitated pool or in upflow-type reactor.
10. the method that starts fast of upflow-type reactor denitrification as claimed in claim 9, is characterized in that:
The described oxidizing substance added is: containing solid or the solution of high-valence state nitrogen;
The described reducing substances added is for containing organic liquid or solid.
11. the method that upflow-type reactor denitrification as claimed in claim 10 starts fast, it is characterized in that: the solid containing high-valence state nitrogen or the solution of described interpolation are: containing SODIUMNITRATE or saltpetre or Sodium Nitrite or potassium nitrite or containing the solid of the arbitrary above-mentioned substance of ratio or solution.
The method that 12. upflow-type reactor denitrifications as claimed in claim 10 start fast, is characterized in that: described interpolation containing organic liquid or solid be: containing methyl alcohol or ethanol or formic acid or acetic acid or sodium formiate or sodium acetate or the liquid or solid containing the arbitrary above-mentioned substance of ratio.
The method that 13. upflow-type reactor denitrifications as claimed in claim 1 start fast, is characterized in that: when denitrification mud kind mud being domesticated for denitrification mud in the agitated pool of upflow-type reactor outside, need ensure pH value >=6.5 in agitated pool,
Realize in the following manner:
Mode one, by adding pH value >=6.5 in alkaline matter guarantee agitated pool in agitated pool,
Mode two, ensures pH value >=6.5 in agitated pool by the pH value improving domestication kind of mud water inlet used.
The method that 14. upflow-type reactor denitrifications as claimed in claim 13 start fast, is characterized in that: described alkaline matter is sodium carbonate solution or sodium hydroxide solution or sodium hydrogen carbonate solution or the solution containing the arbitrary above-mentioned alkaline matter of ratio.
The method that 15. upflow-type reactor denitrifications as claimed in claim 1 start fast, is characterized in that: in step 6, if the inadequate 200mg/L ~ 1000mg/L of high-valence state nitrogen concentration, then after step 2, adds oxidizing substance regulate; If the inadequate 500mg/L ~ 4000mg/L of COD concentration, then after step 2, add reducing substances regulate; Then high-valence state nitrogen concentration and the COD concentration of muddy water mixed solution filtrate is redeterminated.
The method that 16. upflow-type reactor denitrifications as claimed in claim 15 start fast, it is characterized in that: the judge index that denitrification mud kind mud is domesticated for denitrification mud is, in agitated pool, the COD of mixed solution filtrate is down to step 6 and finally measures 10% ~ 40% of COD value.
The method that 17. upflow-type reactor denitrifications as claimed in claim 1 start fast, is characterized in that: denitrification mud imports in reactor by bottom upflow-type reactor.
The method that 18. upflow-type reactor denitrifications as claimed in claim 1 start fast, is characterized in that: denitrification mud is imported in reactor by upflow-type reactor top.
The method that 19. upflow-type reactor denitrifications as claimed in claim 1 start fast, is characterized in that: the water inlet importing upflow-type reactor imports reactor by bottom upflow-type reactor.
The method that 20. upflow-type reactor denitrifications as claimed in claim 17 start fast, is characterized in that: denitrification mud is used water-in bottom upflow-type reactor and imported in reactor by bottom.
The method that 21. upflow-type reactor denitrifications as claimed in claim 17 start fast, is characterized in that: denitrification mud is imported in reactor by mud inlet independent bottom upflow-type reactor.
The method that 22. upflow-type reactor denitrifications as claimed in claim 1 start fast, is characterized in that: the concrete steps that rapid startup upflow-type reactor carries out anti-nitration reaction are:
Step 1, the lower floor's muddy water mixed solution importing upflow-type reactor will settled down in agitated pool, this lower floor's muddy water mixed solution is denitrification mud;
Step 2, importing water inlet in upflow-type reactor, upflow-type reactor is aerogenesis immediately, and mud seldom runs off, and denitrification starts smoothly.
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