CN1290663A - Deep processing method for deodorizing waste water by soll microorganism - Google Patents
Deep processing method for deodorizing waste water by soll microorganism Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
- C02F3/305—Nitrification and denitrification treatment characterised by the denitrification
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
- C02F3/303—Nitrification and denitrification treatment characterised by the nitrification
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/308—Biological phosphorus removal
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/02—Odour removal or prevention of malodour
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Abstract
Disclosed is a deep processing method for deodorizing waste water by soil microorganism. The method includes culture slot for culturing soil microorganism filled with compressed soil, or muck, or sludge crystal and activator for removing odour of waste water and nutritious salts; culture sludge transportation pipe; anaerobic slot; intermission aeration slot; intermission interior transportation pipe; finally deposition slot.
Description
The method that the present invention relates to adopt the soil microorganisms deodorization and remove nitrogen, phosphorus, in more detail, relate to sanitary sewage and be contained in stench and organic pollution materials in the various organic wastewaters, and the nutrient salts such as nitrogen, phosphorus that cause river and lake water eutrophication, with the soil microorganisms novel method of biological removal in addition.
Generally, for stink and the nutrient salts of removing waste water, used before this method is, the technology of having developed that removes stink with denitrogenate, the phosphorus technical combinations gets up and uses at the scene.
Promptly, waste water itself, or the stench that in wastewater treatment process, produces, can be from physical treatment process (WATER-WASHING METHOD, active carbon adsorption, air dilution method), method of chemical treatment (oxidation style, soup washing method, neutralisation, combustion method, ion-exchange resin), and suitably select in biological treatment (scrubber deodorization, aerator tank deodorization, soil deodorization, compost deodorization, hole deodorization, the packed tower deodorization etc.) method, in order to remove nitrogen, phosphorus, can be from the A that anaerobism-anaerobic-aerobic operation is combined into
2/ O technology, UCT technology, VIP technology and SBR technology, consideration geographical conditions and economy etc. are suitably selected.
Generally, in the waste water processing station, the stink that is produced, its main component is ammonia, thiomethyl alcohol, hydrogen sulfide (H
2S), sulfo-methane (CH
3S), sulfurous gas is for methane (CH
3SO
2) etc., general in order to remove them, the method for normal use is soil deodorization method and absorption method, in addition, aerator tank deodorization method etc. also are suitable for.
The soil deodorization method is to allow material frowzy pass through pedosphere, decompose by the absorption of interstitial water, the absorption of soil particle, the biological chemistry of soil microorganisms, and with the chemical reaction of soil constituent, produce effect such as compound such as neutralization grade, the method that alleviates stink or removed.
On the other hand, the soil deodorization method, not only running cost is cheap, operational management is easy, and to all stinks, even the stink of high density also may be handled, this is its advantage, yet, because aeration resistance is big, in order to reduce the pressure-losses, very big land area will be arranged, and in the Urban areas, the place is difficult to guarantee, so, not only be provided with and be restricted, and it is big to produce segmentation mobile possibility when stopping up interstices of soil and rainfall, particularly at cold district, must prevent to freeze, this is its shortcoming.
Absorption method is the method for material frowzy being adsorbed, removing by gac, ion exchange resin etc., sorbent material can be divided into acidity, alkalescence and neutral by its kind, by the combination of sorbent material, applicable to removing of multiple stink, so it is extensive to remove object.
In addition, because its deodorising effect is very good, so, when making up, also be suitable for as the removal method majority of the residual foul smell after 1 grade of processing with other modes.
Yet, to the stink of high density, being subjected to the limitation of adsorptive power, the time limit of service of sorbent material shortens, and after the processing, produces secondary pollutant, installation cost and the high shortcoming of operational management expense.
The aerator tank deodorization method, owing to be that it is minimum that installation cost is reduced to the operating aerator tank in existing waste water processing station, applied widely to stink substance, this is its advantage, yet the residual stink that active sludge is arranged can not use separately, subsequent disposal such as gac are arranged, the pressure-losses is big, is subject to processing the restriction of air quantity, and this is its shortcoming.
In addition, the gas-liquid contact time of aforesaid method is short, and the stink substance clearance of indissoluble is low, and slow to the reaction of stink composition change, this is its shortcoming.
On the other hand, when material frowzy is injected the active sludge of aerator tank, the matrix and the biophase for the treatment of water, active sludge there is detrimentally affect, so, must determine water treatment is not had the implantation concentration scope of influence, thereby, few to its example of being discussed before this.
But, when the high density foul smell is directly injected, because the growth of filamentous microorganism etc. is influential to the settling property of mud.
Generally speaking, as the nitrogen in the biological process removal waste water and the technology of phosphorus, above-mentioned A is arranged
2/ O technology, UCT technology, VIP technology and SBR technology etc.Principle with nitrogen in these technologies removal waste water and phosphorus is as follows.
Promptly, the ammonium-nitrogen (NH-N) that flows into system under aerobic condition, be oxidized to nitrate ammonia by nitrococcus (Nitrosomonas) and nitrifier nitrification bacterium such as (Nitrobacter), the nitrate nitrogen of oxidation generation, under anaerobism or oxygen free condition, by the effect of denitrifiers such as pseudomonas, micrococci, bacillus, be reduced into nitrogen or Nitrous Oxide, enter atmosphere and removed.
Concerning phosphorus, it is also indeterminate that it removes mechanism, yet, with the phosphorus in the biological treatment waste water, be under anaerobic, in thalline, store the organic phosphorus that begins simultaneously to discharge, under aerobic condition, growing microorganism, Tripyrophosphoric acid is accumulated, is removed.
The microorganism relevant with dephosphorization, known have acinetobacter calcoaceticus (Acinetobacter), Aeromonas (Aeromona), a pseudomonas etc.
Above-mentioned A
2/ O technology, UCT technology and VIP technology be sick of-anaerobic-aerobic slot is made up, and when denitrogenating, is at the rear portion of operation aerobic slot, after by microorganism ammonium-nitrogen being oxidized to nitrate ammonia, deliver to the anaerobic groove with the transferpump of inside, Yi Bian make the nitrate ammonia reduction, Yi Bian removed; During dephosphorization, with the aerobic slot in the operation, excess ingestion the microorganism of phosphorus abandon dephosphorization.
Particularly under situation, minimum for nitrate ammonia is reduced to when operation forward anaerobism groove discharges phosphorus with UCT technology and VIP technology, it after being delivered to the anaerobism groove, is handled the anaerobic groove.
Yet, when selecting this operation to handle, discharge the microorganism of phosphorus from the anaerobism groove, be in cell proliferation and state that can not excess ingestion phosphorus at aerobic slot, owing to be delivered to the anaerobic groove, the release of phosphorus and picked-up ability reduce, the removal decrease in efficiency of phosphorus, delivered inside increases, so equipment and construction cost increase, the operational and administrative expenses of facility rises, and this is its shortcoming.
In addition, as not carrying out delivered inside, or in a reactive tank, under anaerobism-anaerobic-aerobic condition, do not carry out spatial movement and change by the time, that removes nitrogen and phosphorus has SBR technology.
This operation ties up to reacts simultaneously in 1 reactive tank and precipitates, so the initial outlay expense is low, this is its advantage, but its shortcoming is, when the precipitation state of microorganism in the reactive tank is bad, and the water quality variation of water outlet.
Above-mentioned this methods etc. are suitable for the removal of the deodorization of waste water processing station and nitrogen, phosphorus, after advanced treatment operation and deodorization equipment constructed respectively, the associating operation, so, the land used of facility, construction cost and operational management expense are with excessive increase, this is inevitable, and the steady running of two individual event operations will have advanced expertise.
In addition, at biological deodorization equipment or advanced treatment in-process, flow into the objectionable impurities of concentration over-standard, or impact load is difficult to deal with when big to this situation, reaches the stable cost considerable time of needing in order to make system, these all are the problems that exists.
The objective of the invention is the problem of above-mentioned original technical existence is replenished, improved, the technology that creation makes new advances, do not append the utility appliance of deodorization device, by the waste water processing station being carried out the variation on the simple operation, provide down the new bio treatment process of water/deodorizing waste water and nitrogen, phosphorus highly-efficient treatment rate.
In order to achieve the above object, the present invention is for removing the stink and the nutrient salts of waste water, with being compressed into atypic bulk, round shape, soil or peats such as sphere, the mud xln that perhaps in the soil microorganisms decontamination process, generates, with with siliceous float stone, the promoting agent of the rock filling of zeolite or arteries and veins spot stone system, in the culture tank of filling above-mentioned substance, cultivate soil microorganisms, with the culture sludge transfer lime stink is removed from waterwater entrance, emit phosphorus from the anaerobism groove with anaerobic state, by the intermittent aeration groove, under aerobic and anaerobic state, make its nitrification, denitrogenationization, bring out the excess ingestion of phosphorus, in order to promote nitric efficiency, by the inner duct at intermittence, be delivered to front end from the rear end of intermittent aeration groove, the liquid of handling, after carrying out solid-liquid separation with final settling bath, emit treating water, part or all of mud is circulated in above-mentioned culture tank and the anaerobism groove, microorganism concn is kept, owing to excess sludge is discharged, has shortened the trial run time of cultivating Initial microorganisms.
Fig. 1 is specific embodiments of the invention, carries out the structural representation of waste water deodorization deep treatment method with soil microorganisms
Fig. 2 is the planar arrangement feature figure of Fig. 1
[nomenclature]
1 flows into water
2 pretreating devices (Flow-rate adjustment groove)
3 initial settling bath or trommels
4 culture tanks
5 anaerobism grooves
6 intermittent aeration grooves
7 final settling baths
8 stirrers
9 apparatuss of oxygen supply
10 inner duct intermittently
11 carry sludge pipe
12 carry culturing sludge groove inflow pipe
13 carry sludge anaerobic groove inflow pipe
14 culture sludge transfer limes
15 waste sludge pipes
16 flow out water
Illustrate in greater detail the present invention according to accompanying drawing below.
Waste water deodorization of the present invention, the method of denitrogenating phosphorus comprises: for the suspended substance removal in the waste water that makes inflow and the flow and the water quality change that flow into waste water reach impartial and the pretreating device 2 that contains the Flow-rate adjustment groove is set, be used for precipitating the solid particulate of removing inflow waste water and initial settling bath or trommel 3 are set, be used to remove the stink and the nutrient salts of waste water, cultivate the culture tank 4 of soil microorganisms, be used under anaerobic state, giving off the anaerobism groove 5 of phosphorus, be used for being issued to nitrification at aerobic and anaerobic state, denitrogenationization, induce the intermittent aeration groove 6 of the excess ingestion of phosphorus, the liquid of handling solid-liquid separation in addition, part or all that makes mud is circulated to the final settling bath 7 of above-mentioned culture tank 4 and anaerobism groove 5.
Removal effect to stink of the present invention and nutrient salts is illustrated below.In aforesaid method, the microorganism of inoculation is general active sludge, when adapting to method of the present invention within a certain period of time, aerobic, anaerobion are mixed into general character soil microorganisms and settle out, simultaneously, the activity of beginning normal metabolic then, is played the effect of removing active stink and nutrient salts.
In more detail it is described as follows.Culture tank 4 is to cause best cultivation breeding soil microorganisms, be similar to the device of soil natural envrionment conditions, in culture tank, being compressed into unbodied bulk, round shape, the soil of sphere etc. or peat, or the mud xln that in decontamination process, generates owing to the effect of soil microorganisms, with siliceous float stone, the promoting agent of the rock filling of zeolite or arteries and veins spot stone system, be filled in the culture tank 4, the general character state that the part of the mud of carrying from final settling bath is kept certain hour, carry out contact reacts on one side, soil microorganisms with general makes bacillus, thiobacillus, pseudomonas, micrococci, acinetobacter calcoaceticus, Aeromonass etc. are preponderated and are cultivated propagation.Effect and principle to above-mentioned culture tank 4 is illustrated below.
At the vegetable mould that soil surface distributes, self have pollution substance such as the organic matter of making humified function takes place.
That is to say that contained soil microorganisms plays such effect in the vegetable mould.
Because this principle, when producing pollution substance repeatedly, then at ground surface continuously by the effect of soil microorganisms, form vegetable mould.
Vegetable mould and peat and have indispensable correlationship as the silicon that constitutes earth soil main component.
Perching soil microorganisms in peat and the peat, these are air permeability or approximate general character anerobe, and its function is the pollution substance humify such as resin attitude organic matter that do not become soil, this natural principle is used for the purifying treatment of waste water.
In other words, be similar under the edatope condition when investing, soil microorganisms obtains cultivating breeding, when soil microorganisms is cultivated, because meta-bolites enters nature, so this method can be used as soil microorganisms and cultivates propagation method the most easily, still, the vegetable mould or the peat that exist at nature, with the float stone of siliceous composition or arteries and veins spot stone, zeolite mixed environment in addition, when remaining on general character state, can make the most active soil microorganisms obtain cultivating breeding.
For it can actual be used, compression peat or vegetable mould make to form unbodied bulk, round shape, spherical even-granular, with when organic property mud contact, carry out intermittent aeration, soil microorganisms is cultivated bred.
In this case, confirm to cultivate the earthy that the mud of breeding sends by the confirmation method of cultivating breeding, perhaps with it under anaerobism-anaerobic-good oxygen condition, contact mixing with organic waste water, by cohesion, chemical combination, condensation, oxidation, reduction reaction, remove stink and nitrogen, phosphorus, mud also settles out under the humic state, does not stink.
On the other hand, dissolved oxygen concentration in the above-mentioned culture tank 4 remains under the general character state of 0.1～0.5mg/L, microorganism concn (MLSS) is 5000～10000mg/L, the sludge quantity that flows into culture tank 4 from final settling bath 7 is to carry 5～20% of sludge quantity, and it is ideal that the residence time remains on 12～48 hours.
In addition, carry out the soil microorganisms of multiplication culture, begin to contact mixing,, flow into anaerobism groove 5 through pretreating device 2 and final settling bath or trommel 3 with the waste water that is produced from influx with culture tank 4.At anaerobism groove 5, the effect by the soil microorganisms relevant with the removal of phosphorus such as above-mentioned acinetobacter calcoaceticus, Aeromonas, pseudomonas and micrococci is accumulated in the organism that may absorb in the waste water in the thalline, simultaneously, plays the effect of emitting phosphorus in the body.
At this moment, the anaerobism groove 5 rear ends phosphorus concentration of emitting is higher about 3～4 times than the phosphorus concentration that flows in the water.
Above-mentioned anaerobism groove 5 is just regulated dissolved oxygen concentration (D0) by stirring, it is remained under the general character anaerobic state, dissolved oxygen concentration remains on the general character state of 0.1～0.5mg/L, microorganism concn (MLSS) is 2000～5000mg/L, and it is ideal that the residence time remained on about 1～2 hour.
Above-mentioned intermittent aeration groove 6 is aerations and stirs the reactive tank that hockets repeatedly, remain under aerobic-anaerobic state, by with phosphorus, nitrogen is removed relevant acinetobacter calcoaceticus, Aeromonas, pseudomonas, micrococci, bacillus, thiobacillus, the effect of soil microorganisms such as nitrococcus and nitrifier, when aeration, the excess ingestion of phosphorus and make ammonium-nitrogen be transformed into nitrate ammonia to play oxygenizement, under anaerobic state, in the soil microorganisms, by the action of microorganisms relevant with denitrogenation, nitrate ammonia is reduced into nitrogen, removed, untreated nitrate ammonia, with inner duct 10 at intermittence, transport 20～100% from the rear end forward end of intermittent aeration groove and make its removal.
Then, the treating water after biological respinse is finished flows into final settling bath carry out solid-liquid separation after, discharge final treating water, through spissated mud, deliver to culture tank 4 and anaerobism groove 5 by transfer lime.
Regulate dissolved oxygen (D0) concentration, making intermittent aeration groove 6 remain on anaerobic becomes reconciled under the oxygen condition, during aeration greater than 2.0mg/L, and when aeration interrupts less than 0.5mg/L, intermittent aeration is spaced apart 15～60 minutes, microorganism concn (MLSS) is 2000～5000mg/L, and it is ideal that the residence time remained on about 4～6 hours.
Wherein, the residence time of final settling bath and mud operational throughput remained on respectively 2～5 hours and 50～100% scope is an ideal.
Specify principle below with aforesaid method deodorizing and removal nitrogen phosphorus.The soil microorganismss of cultivating at culture tank 4 such as bacillus, thiobacillus, pseudomonas, micrococci, acinetobacter calcoaceticus and Aeromonas, by culture sludge transfer lime 14, be transported to the place that waste water flows into, flow into point ammonia (NH from waste water
3), hydrogen sulfide (H
2S), sulfo-methane (CH
3S), sulfurous gas is for methane (CH
3SO
2), organic nutrient substance absorption in soil microorganisms, cohesion and combination such as the material that stinks such as thiomethyl alcohol and the organism in the waste water, nitrogen, phosphorus, in its process, biological respinses such as its condensation, oxidation, reduction are removed by pretreating device 2, initial settling bath or trommel 3, anaerobism groove 5, intermittent aeration groove 6 and final settling bath 7.
That is to say, the stink of nitrogen class ammonium-nitrogen, be adsorbed to the above-mentioned soil microorganisms from waste water influx biology, physical adsorption in addition soluble in water, on one side through pretreating device 2, initial settling bath or trommel 3, anaerobism groove 5, the protein of forming as the soil microorganisms organism uses on one side, in process through intermittent aeration groove 6, flow into the ammonium-nitrogen composition in the waste water together,, under the oxygenizement of nitrification soil microorganismss such as nitrococcus and nitrifier, be transformed into nitrate ammonia at good oxygen condition, simultaneously, under anaerobic state, Yi Bian pass through bacillus, denitrification microorganism such as pseudomonas and micrococci utilizes the organism in the waste water, Yi Bian be reduced into nitrogen, enter atmosphere, removed.
In addition, hydrogen sulfide, sulfo-methane, sulfurous gas is for methane, the stink of sulfur compound systems such as thiomethyl alcohol, bacillus by propagation in culture tank 4, thiobacillus, pseudomonas, micrococci, acinetobacter calcoaceticus and Aeromonas etc., be adsorbed to the above-mentioned soil microorganisms from waste water influx biology, by dissolved physical adsorption in the water, at process pretreating device 2, initial settling bath or trommel 3, in the process of anaerobism groove 5, remove on one side as the energy of soil microorganisms on one side, part electron donor as the nitrate ammonia of nitrification in intermittent aeration groove 6 uses, and is removed after the assimilation by soil microorganisms simultaneously in addition.
Phosphorus in the waste water, in anaerobism groove 5, remove relevant microorganism by above-mentioned acinetobacter calcoaceticus, Aeromonas, pseudomonas, micrococci etc. with phosphorus, the organism that may absorb in the waste water is accumulated to thalline, emit intravital phosphorus simultaneously, under the good oxygen condition of intermittent aeration groove 6, in excess ingestion phosphorus, its necessary energy as soil microorganisms propagation is used and removes, final, discharge excess sludge, finish the removal process of phosphorus.
The excess sludge of discharging with aforesaid method is that stink can not produce fully and settle out through humified mud.
Below, put down in writing ideal embodiment of the present invention and comparative example.
The following example is an illustration of the present invention, can not be interpreted as limitation of the scope of the invention.
[embodiment]
Be used for handling apparatus of the present invention of waste water, comprising:
In order to remove the suspended substance in the waste water, and the flow and the water quality change homogenizing that make the waste water of inflow, the pretreating device 2 with Flow-rate adjustment groove is set; Be used for precipitating the initial settling bath or the trommel 3 of the solid particulate of removing the waste water that flows into; Be used to remove the stink of waste water and nutrient salts and cultivate the culture tank 4 of soil microorganisms; The anaerobism groove 5 that is used for discharging phosphorus under anaerobic state; Be used for the intermittent aeration groove 6 that is issued to nitrification, denitrogenationization at aerobic and anaerobic state, induces the excess ingestion of phosphorus; The liquid of handling solid-liquid separation in addition, part or all of mud is circulated to the final settling bath 7 of above-mentioned culture tank 4 and anaerobism groove 5.In this waste water treatment process, being compressed into unbodied bulk, round shape, soil or vegetable mould such as sphere, the mud xln that perhaps in the soil microorganisms decontamination process, generates, with with siliceous float stone, the promoting agent of the rock filling of zeolite or arteries and veins spot stone system, after being filled to culture tank, the operational conditions of culture tank is, dissolved oxygen concentration remains on 0.1～0.5mg/L, microorganism concn (MLSS) is 5000～10000mg/L, the sludge quantity that flow to culture tank 4 from final settling bath 7 is for carrying 5～20% of sludge quantity, and the residence time is about 12～48 hours.
The operational conditions of anaerobism groove 5 is: only regulate dissolved oxygen concentration (D0) so that it remains under the general character anaerobic state with stirring, dissolved oxygen concentration remains on below 0.1～0.5mg/L, microorganism concn (MLSS) is 2000～5000mg/L, and the residence time is about 1～2 hour.
The operational conditions of intermittent aeration groove 6 is: regulate dissolved oxygen concentration (D0) so that it remains on anaerobic becomes reconciled under the oxygen condition, be more than the 2.0mg/L during aeration, be below the 0.5mg/L when aeration stops, intermittent aeration is spaced apart 15～60 minutes, microorganism concn (MLSS) is 2000～5000mg/L, 4～6 hours residence times are for improving denitrification effect, while delivered inside is to carry 20～100% to move from the rear end forward end of intermittent aeration groove.
In addition, the residence time and the mud operational throughput of final settling bath 7 were respectively 2～5 hours and 50～100%, and the solid retention time in the reactive tank remained on 10～30, with this condition operation.
Under above-mentioned operational conditions, the conservation condition of various occasions is set within the specific limits, pollution loading amount according to the waste water that flows into waits the operational conditions that changes reality, water quality after considering the treatment time and handling etc., be limited in the best operational conditions scope, for the general knowledge person with this technical field, operation is possible under these conditions.
The result of comprehensive the foregoing description transforms the odor strength and the concentration of the waste water processing station of front and back to the present invention, and is as described below with the result that 6 sections odor strength representations and vapor-phase chromatography record.
Stink at the inlet of waste water processing station, aerator tank, settling bath, dewatering tank, digestive shelf, before the present invention transforms, the analytical results of representing with 6 sections odor strength representations is, the stink degree is 2～4 degree, yet, after adopting the present invention to handle, all below 1 degree, it is highly stable that the expression stink is removed efficient.
On the other hand, the analytical results with vapor-phase chromatography is ammonia (NH
3) be 2～15ppm, hydrogen sulfide (H
2S) be that 1～22ppm, sulfo-methane are that 0.09～3ppm, sulfurous gas are that 0.002～1ppm, thiomethyl alcohol are 0.2～1ppm for methane, yet, after adopting the present invention to handle, it removes efficient entirely more than 98.9%, can confirm that stink almost all is removed.
In addition, be influent density: organism (BOD
5) 60～400mg/L, total nitrogen (T-N) 20～90mg/L, total phosphorus (T-P) 4～20mg/L are as the inflow waste water that is suitable for, its experimental result can be confirmed: remove efficient, organism (BOD
5) more than 95%, total nitrogen (T-N) 80～90%, total phosphorus (T-P) 85～90%.
As mentioned above, treatment process of the present invention comprises: have the pretreating device 2 of Flow-rate adjustment groove, be used for wastewater flow and the water quality homogenizing removing the suspended substance of waste water and make inflow; Initial settling bath or trommel 3 are used for precipitating the solid particulate of removing the waste water that flows into; Culture tank 4, be used to remove the stink and the nutrient salts of waste water, the soil or the vegetable mould that are compressed into unbodied bulk, round shape, sphere etc., the mud xln that perhaps in the soil microorganisms decontamination process, generates, promoting agent with the rock filling of siliceous float stone, zeolite or arteries and veins spot stone system is filled in the culture tank 4 of cultivating soil microorganisms; Culture sludge transfer lime 14 is used for flowing into the place from waste water and removes stink; Anaerobism groove 5 is used for discharging phosphorus under anaerobic state; Intermittent aeration groove 6 under aerobic and anaerobic state, is used to reach nitrification, denitrogenationization is induced and the excess ingestion of phosphorus; Inner duct 10 intermittently in order to promote the raising of nitric efficiency, is delivered to front end from the rear end of intermittent aeration groove; Final settling bath 7, the liquid that is used for handling carries out solid-liquid separation, and part or all of mud is circulated to above-mentioned culture tank 4 and anaerobism groove 5.When handling waste water, can obtain stable stink and nutrient salts removal effect with method of the present invention.
In addition, the excess sludge that aforesaid method is discharged is humified mud, has the effect that does not produce stink.
On the other hand, in order in culture tank 4, to cultivate the soil microorganisms that is used for deodorizing and removes nitrogen, phosphorus, when flowing in the treatment process greater than the objectionable impurities of safe level or impact load, easy to the processing of this situation, can make effectively to reach the stable of system at short notice.
In addition, when the present invention is used for the removal of the deodorization of waste water processing station and nitrogen, phosphorus, needn't construct advanced treatment operation and deodorization equipment respectively, can save facility land used, executive cost and operational and administrative expenses.
The present invention is that the condensation reaction by meta-bolites of soil microorganisms and pollution substance generates macromole, the rate of propagation of microorganism is accelerated, in trial run time (the guarantee water quality of various inflows), with usual method in summer operation 70 days, winter operation 110 days, yet, when using on-the-spot excess sludge of the present invention or carrying mud, when cultivating Initial microorganisms, trial run time is about 15～30 days, therefore, and after building up nonsense water treatment field, can obtain without the former water of normal processing time of releasing the shortest, the useful effect that the water system water pollution is minimum.
Claims (7)
1. deep treatment method that utilizes soil microorganisms waste water to be carried out deodorization, it is characterized in that, for stink and the nutrient salts of removing waste water, being compressed into unbodied bulk, round shape, spheric soil or vegetable mould, perhaps the mud xln that in the soil microorganisms decontamination process, generates, promoting agent with the rock filling of siliceous float stone, zeolite or arteries and veins spot stone system is filled to culture tank (4), in order to cultivate soil microorganisms; Flow into the place with culture sludge transfer lime (14) from waste water and remove stink; Discharge the phosphorus that is in anaerobic state from anaerobism groove (5); Be issued to nitrification, denitrogenationization, induce the excess ingestion of phosphorus in aerobic and anaerobic state with intermittent aeration groove (6); In order to improve nitric efficiency, be delivered to front end from the rear end of intermittent aeration groove (6) by inner duct at intermittence (10); The liquid of handling, after carrying out solid-liquid separation with final settling bath (7), emit treating water, part or all of mud is circulated to above-mentioned culture tank (4) and anaerobism groove (5), keep microorganism concn, excess sludge is discharged, shorten the trial run time of cultivating Initial microorganisms by these measures.
2. the handy soil microorganisms deep treatment method that waste water carried out deodorization of record in the claim 1, it is characterized in that, the dissolved oxygen concentration of above-mentioned culture tank (4) is remained on the general character state of 0.1～0.5mg/L, the concentration of microorganism (MLSS) is 5000～10000mg/L, the sludge quantity that flows into culture tank (4) from final settling bath (7) is for carrying 5～20% of sludge quantity, residence time remained on about 12～48 hours, cultivated soil microorganisms by this condition.
3. the soil microorganisms that utilizes of record carries out the deep treatment method of deodorization in the claim 1 to waste water, it is characterized in that, above-mentioned anaerobism groove (5) only stirs with stirrer under water and regulates dissolved oxygen concentration (D0), remain on general character anaerobic state, oxyty remains on the general character state of 0.1～0.5mg/L, the concentration of microorganism (MLSS) is 2000～5000mg/L, and the residence time remained on about 1～2 hour.
4. the soil microorganisms that utilizes of record carries out the deep treatment method of deodorization in the claim 1 to waste water, it is characterized in that, above-mentioned intermittent aeration groove (6) is provided with stirrer under water, and make its operation, regulate dissolved oxygen concentration (D0) whereby to keep anaerobic and aerobic state, when aeration, keep greater than 2.0mg/L, and remain on below the 0.5mg/L when stopping aeration, intermittent aeration is spaced apart 15～60 minutes, the concentration of microorganism (MLSS) is 2000～5000mg/L, and the residence time remained on about 4～6 hours.
5. that puts down in writing in the claim 1 utilizes soil microorganisms to the deep treatment method that waste water carries out deodorization, it is characterized in that, with above-mentioned inner duct at intermittence (10) mixed solution is carried 20～100% to front end from the rear end of intermittent aeration groove (6).
6. the soil microorganisms that utilizes of record carries out the deep treatment method of deodorization in the claim 1 to waste water, it is characterized in that, when precipitation is removed the solid particulate that flows in the waste water, also can pass through initial settling bath or trommel (3), residence time at final settling bath is 2～5 hours, and the operational throughput of mud remains in 50～100% the scope.
7. the soil microorganisms that utilizes of record carries out the deep treatment method of deodorization in the claim 1 to waste water, it is characterized in that, in the culture tank (4) of cultivating above-mentioned soil microorganisms, meta-bolites of soil microorganisms and pollution substance are by condensation reaction, generate macromole, improve the rate of propagation of microorganism rapidly,, come to shorten greatly trial run time whereby by using on-the-spot residue or carrying mud to make the cultivation propagation of Initial microorganisms.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR24285/1999 | 1999-06-25 | ||
| KR1019990024285A KR100277597B1 (en) | 1999-06-25 | 1999-06-25 | Deodorize and nutrients removal from wastewater by soil microorganisms |
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| Publication Number | Publication Date |
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| CN1290663A true CN1290663A (en) | 2001-04-11 |
| CN1188357C CN1188357C (en) | 2005-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB001019228A Expired - Fee Related CN1188357C (en) | 1999-06-25 | 2000-01-28 | Deep processing method for deodorizing waste water by soll microorganism |
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| KR (1) | KR100277597B1 (en) |
| CN (1) | CN1188357C (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN1188357C (en) | 2005-02-09 |
| KR19990068819A (en) | 1999-09-06 |
| KR100277597B1 (en) | 2000-12-15 |
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