CN103359875B - Waste water treatment method and waste water treatment system - Google Patents
Waste water treatment method and waste water treatment system Download PDFInfo
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- CN103359875B CN103359875B CN201310040720.6A CN201310040720A CN103359875B CN 103359875 B CN103359875 B CN 103359875B CN 201310040720 A CN201310040720 A CN 201310040720A CN 103359875 B CN103359875 B CN 103359875B
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Abstract
The present invention provides a waste water treatment method and a waste water treatment system, which raises organic-matter degradation speed of microorganisms and prevents organic maters from being left in treating water. The waste water treatment system comprises an aeration tank (1); a gas dispersion device (1a); an ozone adsorption tank (16), an ejector for mixing the sludge-containing treating water pumped from the aeration tank (1) with a high-concentration ozone gas generated by the ozone adsorption tank (16); an ozone reaction tank (19) for contacting sludge with the high-concentration ozone gas for improvement; a sludge return pump (7) for returning the improved sludge; a measuring device (21) for measuring activity degree of the microorganisms in the aeration tank (1); and a control device (23) for controlling the aeration rate of the gas dispersion device (1a), the ozone gas flow in the ejector (10) and the sludge pumping amounted based on the measuring result of the activity degree of the microorganisms.
Description
Technical field
The present invention relates to method of wastewater treatment and the Waste Water Treatment of the waste water of process containing Organic material.
Background technology
Generally speaking, as the method for wastewater treatment containing Organic material, utilize widely and employ microbic activity sludge., in activated sludge process, produce a large amount of mud (comprising microorganism) due to wastewater treatment, so after the sludge settling making to add and dehydration, carry out burying or burning disposal.Now, in order to cut down cost for wastewater treatment, studying to import physical property in the midway of wastewater treatment operation or the reducing sludge volume process of chemical.
Therefore, in the past, as one of the reducing sludge volume method of physical property, proposed to utilize after ozone gas carries out upgrading (decomposing microorganism) to mud, be returned to the method (for example, referring to patent documentation 1) that biologic treatment process makes it again decompose.
In addition, for the reducing sludge volume method of above-mentioned physical property, known concentration of ozone gas is higher, and the upgrading of mud is more effective, and the decomposition efficiency in biologic treatment process is higher.
Such as, according to the experimental result of the present inventor, in change concentration of ozone gas and carry out upgrading to mud, and when making it dissolve in aerator tank, as shown in Figure 7, concentration of ozone gas is higher, and the biological degradability of mud in aerator tank of upgrading is higher.In addition known, the upgrading mud that biological degradability is high is tailed off by the ratio that the propagation of microorganism utilizes in aerator tank, can reduce mud generation.
In the figure 7, transverse axis is ozone consumption (mg-O
3suspended solid in the aerator tank of/g-MLSS:Mixed LiquorSuspended Solids(activated sludge process in mixed solution)), the longitudinal axis is that oxygen utilizes speed relative value (index of biological degradability).Here, represent that concentration of ozone gas is 134mg/L(white tetragon solid line respectively) when, for 60mg/L(black circular dotted lines) when, be 26mg/L(white continuous circular line) when, biological degradability is relative to the characteristic of ozone consumption.
Fig. 8 is the pie graph of the Waste Water Treatment represented described in above-mentioned patent documentation 1.
In fig. 8, Waste Water Treatment in the past comprises: aerator tank 1, flows into for waste water 2; Loose device of air 1a, in order to utilize microbiological treatment waste water 2, is blown into air in aerator tank 1; Settling bath 6, stores the process water 3 containing mud flowed out from aerator tank 1, and is separated into excess sludge 4 and process water 5; Mud foldback pump 7, the excess sludge 4 in aerator tank 1 in foldback settling bath 6; Ozonize portion 8, processes a part for the process water 3 containing mud extracted out from aerator tank 1; Sludge circulation pump 9, makes the process water 3 containing mud in ozonize portion 8 circulate; Injector 10, is blown into ozone gas to the process water 3 containing mud at ozonize portion 8 internal recycle; Ozone gas generator 11, produces the ozone gas being blown into injector 10; And foldback pump 12, the process water 3 containing mud by ozonize portion 8 ozonize is returned to aerator tank 1.
In addition, in patent documentation 1, as ozone gas generator 11, owing to using the structure of discharge type, working concentration scope is the ozone gas of 120mg/L ~ 400mg/L.
Patent documentation 1: Japanese Unexamined Patent Publication 2001-191097 publication
Summary of the invention
Method of wastewater treatment in the past and Waste Water Treatment are as described in Patent Document 1, because directly inject the ozone gas from ozone generation device, so be difficult to concentration of ozone gas to bring up to more than 400mg/L, the upgrading (reducing sludge volume process) that there is the mud in ozonize portion is insufficient, cannot alleviate the problem that the organic loading of the microorganism in aerator tank is such.
In addition, owing to will the mud of ozone gas upgrading be utilized to put in aerator tank, increase relative to the organic concentration in waste water, the loose tolerance of the air in aerator tank is constant, so the decomposition that there is the microorganism in aerator tank cannot be corresponding, the problem that residual organic matter is such in process water.
In addition, in order to promote that the ozone gas that the upgrading of mud is filled with becomes bubble in the process water containing mud, process water is dissolved in by liquid-gas interface, the ozone be dissolved in process water contacts with Sludge Surface, make mud upgrading (reducing sludge volume process), but the ozone concn being dissolved in process water is about 30% of concentration of ozone gas, more than 30% lysed ozone, be discharged from the process water containing mud as useless ozone gas, or be broken down into oxygen because of decompose themselves effect, even if so there is the ozone gas injecting high density, most ozone gas also can be consumed in in the dissolving of the process water containing mud, the utilising efficiency of ozone in mud upgrading reduces such problem.
The present invention proposes in order to the problem solved as described above, its object is to, obtain a kind of method of wastewater treatment and Waste Water Treatment, by in the ozone supply side sandwiched ozone condensation means from ozone generation device, the high-concentrated ozone gas of more than 1000mg/L can be utilized to carry out sludge treatment, reduce the organic loading of the microorganism in aerator tank, and when the upgrading mud of the upgrading because of high-concentrated ozone gas is returned to aerator tank, measure the microbic activity degree in aerator tank, the air capacity change being blown into aerator tank is made according to activity degree, thus improve the organic substance decomposing speed brought by microorganism, prevent organic substance residues in process water.
In addition, the object of the invention is to, obtain a kind of method of wastewater treatment and Waste Water Treatment, even if when producing the high-concentrated ozone gas of more than 1000mg/L, also the utilising efficiency of ozone will be caused to reduce in process water because of ozone solution, the upgrading mud that decomposition efficiency is very high can be obtained in aerator tank, reduce mud generation thus.
Method of wastewater treatment of the present invention comprises: biological treatment step, utilizes the organism in microbial decomposition waste water; Aerating step, is blown into air in waste water; Ozone gas generating step, produces ozone gas; Ozone enrichment step, makes ozone gas be adsorbed in sorbent material, generates high-concentrated ozone gas; Gas-liquid mixed step, is blended in the process water containing mud generated in biological treatment step and the high-concentrated ozone gas generated in ozone enrichment step; Ozone treatment step, makes the mud in the process water containing mud contact with high-concentrated ozone gas and carry out upgrading; Foldback step, the upgrading mud by upgrading in ozone treatment step is returned in aerator tank; Microorganism active degree measuring process, measures the microorganism active degree in aerator tank; And rate-determining steps, based on the measuring result of microorganism active degree, control the extracted amount of the aeration rate in aerating step, the ozone gas amount in gas-liquid mixed step and the process water containing mud.
In addition, method of wastewater treatment of the present invention comprises: attract step, attract the high-concentrated ozone gas generated in ozone enrichment step; And ozone treatment step, make the process water containing mud contact under reduced atmosphere with attracted high-concentrated ozone gas and carry out upgrading to mud.
According to the present invention, by intermittently being produced the high-concentrated ozone gas of more than 1000mg/L by ozone condensation means, and be injected in the process water containing mud, effectively can be decomposed to form the organism of mud, and the microbial cell wall that can effectively destroy in mud, in addition, is carried out a biological disposal upon by the upgrading mud to upgrading before this state, can improve the decomposition efficiency brought by microorganism, improving upgrading sludge disintegration is the ratio of water and carbonic acid gas.
In addition, hold by the situation of the organic substance decomposing brought of carrying out a biological disposal upon by measuring microbic activity degree (organic concentration in the organic substance decomposing amount produced by microorganism or waste water), according to organic substance decomposing situation, the air aeration amount in aerating step and the mud extracted amount for ozonize can be controlled, the organic decomposition brought by microorganism can be promoted, prevent the water degradation processing water.
In addition, according to the present invention, even if when the high-concentrated ozone gas inject of more than the 1000mg/L will produced by ozone condensation means is to process water containing mud, due to reduced atmosphere, suppress high-concentrated ozone gas dissolving in process water, so the consumption of the high-concentrated ozone gas caused by process water can be reduced, improve the efficiency of the mud upgrading brought by ozone gas.
Accompanying drawing explanation
Fig. 1 is the pie graph of the Waste Water Treatment representing embodiments of the present invention 1.
Fig. 2 is the pie graph of the Waste Water Treatment representing embodiments of the present invention 2.
Fig. 3 is the pie graph of the Waste Water Treatment representing embodiments of the present invention 3.
Fig. 4 is the pie graph of the Waste Water Treatment representing embodiments of the present invention 4.
Fig. 5 is schematically illustrated in the reduced atmosphere of embodiments of the present invention 4, utilizes high-concentrated ozone gas, the explanatory view of the process that mud dissolves.
Fig. 6 represents that the ozone reaction groove to embodiments of the present invention 4 injects the pie graph of the parts of high-concentrated ozone gas particularly.
Fig. 7 is the explanatory view of the experimental result of the biological degradability of mud in biologic treatment process represented by different concentration of ozone gas upgradings.
Fig. 8 is the pie graph of the Waste Water Treatment represented in the past.
The explanation of Reference numeral
1, aerator tank; 1a, loose device of air; 2, waste water; 3, the process water containing mud; 4, excess sludge; 5, water is processed; 6, settling bath; 7, mud foldback pump; 8, ozonize portion; 9, sludge circulation pump; 10, injector; 11, ozone gas generator; 12, foldback pump; 13, mud extracts pipe arrangement out; 14, mud extractor pump; 15, high-concentrated ozone pipe arrangement; 16, adsorbs ozone groove; 17, ozone supply pipe arrangement; 18, gas-liquid mixed pipe arrangement; 19,19A, ozone reaction groove; 20, mud foldback pipe arrangement; 21, time meter; 22, signal wire; 23, control device; 24, aeration pump; 25,25A, upgrading mud; 26, useless ozone gas; 27, upgrading mud conveyance pump; 28, upgrading mud conveyance pipe arrangement; 29, alkaline purification groove; 30, alkaline liquid; 31, alkaline sludge conveyance pump; 32, alkaline sludge pipe arrangement; 33, phosphorus separator tank; 34, phosphorus ligands sludge pump; 35, phosphorus ligands mud pipe arrangement; 36, anaerobic air tank; 37, phosphorus agglutinant; 38, phosphorus agglutinator; 39, phosphorus ligands mud; 40, parting liquid conveyance pump; 41, parting liquid conveyance pipe arrangement; 42, upgrading sewage sludge storage groove; 43, atomiser nozzle; 44, foam mud pipe arrangement; 45, useless ozone pipe arrangement; 46, useless cycle of ozone pipe arrangement; 47, useless cycle of ozone pump; 48, ozone diffuser; 49, foam mud; 50, parting liquid; 70, gas attractor; 71, drawdown pump; 72, ozone gas bubble; 73, ozone water; 74, mud; 75, diffuser vane material; 76, pressure survey pipe arrangement; 77, pressure warning unit.
Embodiment
Embodiment 1
Fig. 1 is the pie graph of the Waste Water Treatment representing embodiments of the present invention 1.
In FIG, Waste Water Treatment comprises: aerator tank 1 and loose device of air 1a, be formed as the process water 3 containing mud by waste water 2; Mud foldback pump 7, to aerator tank 1 foldback upgrading mud 25; Injector 10; The ozone gas generator 11 of discharge type; Mud extracts pipe arrangement 13 and mud extractor pump 14 out, extracts the process water 3 containing mud out from aerator tank 1; Adsorbs ozone groove 16, is provided with high-concentrated ozone pipe arrangement 15 and ozone supply pipe arrangement 17; Gas-liquid mixed pipe arrangement 18, via injector 10, is connected to mud and extracts pipe arrangement 13 and high-concentrated ozone pipe arrangement 15 out; Ozone reaction groove 19, is provided with gas-liquid mixed pipe arrangement 18 and mud foldback pipe arrangement 20; Time meter 21, is located in aerator tank 1; Control device 23, has the signal wire 22 controlling each portion for the measuring result according to time meter 21; And aeration pump 24, carry air to loose device of air 1a.
In addition, in FIG, in order to avoid complicated and omit diagram, but the Waste Water Treatment of embodiments of the present invention 1 is identical with above-mentioned (with reference to Fig. 8), be provided with settling bath and mud foldback pump, this settling bath stores the process water 3 containing mud flowed out from aerator tank 1, and is separated into excess sludge and process water; This mud foldback pump is to the excess sludge in foldback settling bath in aerator tank 1.
In the aerator tank 1 carrying out carrying out a biological disposal upon, be provided with loose device of air 1a, flow into waste water 2, flow out the process water 3 containing mud.In addition, the mud being provided with the process water 3 extracted out containing mud in aerator tank 1 extracts pipe arrangement 13 out, and this mud is extracted pipe arrangement 13 out and is connected with injector 10 via mud extractor pump 14.
Injector 10 is connected with adsorbs ozone groove 16 via high-concentrated ozone pipe arrangement 15, and adsorbs ozone groove 16 is connected with ozone gas generator 11 via ozone supply pipe arrangement 17.In addition, injector 10 is connected with ozone reaction groove 19 via gas-liquid mixed pipe arrangement 18, and ozone reaction groove 19 is connected with aerator tank 1 with mud foldback pump 7 via mud foldback pipe arrangement 20.
Sludge activity degree measured by the time meter 21 be arranged in aerator tank 1, by signal wire 22, to control device 23 input measurement signal.In addition, adsorbs ozone groove 16 weight of ozone of adsorbing to control device 23 input.
Control device 23, by signal wire 22, carries the control signal to ozone gas generator 11, mud extractor pump 14, adsorbs ozone groove 16 and aeration pump 24.
Then, the processing sequence of the embodiments of the present invention 1 shown in explanatory view 1.
First, the ozone gas generated by ozone gas generator 11, by ozone supply pipe arrangement 17, is filled in sorbent material (not shown) absorption such as the silica gel of adsorbs ozone groove 16.
Then, when the weight of the ozone being adsorbed in sorbent material becomes necessarily, control device 23 stops from ozone gas generator 11 to adsorbs ozone groove 16 ozone supply, by heating and attracting, the ozone of the inside being adsorbed in adsorbs ozone groove 16 is departed from.Thus, though be intermittent, but the high-concentrated ozone gas of more than 1000mg/L is discharged from adsorbs ozone groove 16 to high-concentrated ozone pipe arrangement 15.
Now, corresponding with the discharge moment of discharging high-concentrated ozone gas to high-concentrated ozone pipe arrangement 15, drive mud extractor pump 14, extract the process water 3 containing mud out from aerator tank 1.Flowed into injector 10 together with high-concentrated ozone gas by the process water 3 containing mud extracted out from aerator tank 1.
Then, high-concentrated ozone gas and mixed in injector 10 containing the process water 3 of mud after, by gas-liquid mixed pipe arrangement 18, flow into ozone reaction groove 19.
Its result, the upgrading mud 25 stored in ozone reaction groove 19 by high-concentrated ozone gas upgrading.In addition, oxygen is decomposed into by the useless ozone gas 26 of discharging from ozone reaction groove 19 by ozonolysis equipment (not shown).
Afterwards, the ozone being adsorbed in adsorbs ozone groove 16 departs from, when the concentration of ozone gas of discharging from adsorbs ozone groove 16 reduces to below 100mg/L, control device 23 stops discharging ozone gas from adsorbs ozone groove 16 and driving mud extractor pump 14, stops the mixing of ozone gas and the process water containing mud.
On the other hand, the upgrading mud 25 lodging in ozone reaction groove 19 utilizes mud foldback pump 7, is returned to aerator tank 1 by mud foldback pipe arrangement 20.Below, because upgrading mud 25 is processed expeditiously by high-concentrated ozone gas, so also play a role as the culture tank of microorganism at aerator tank 1() in, be decomposed into carbonic acid gas and water by microorganism efficiency highland.
Now, because when upgrading mud 25 is returned to aerator tank 1, organic concentration in aerator tank 1 increases, the organic substance decomposing amount produced by microorganism increases, so time meter 21 increase that detects the organism amount in aerator tank 1 and the increase of organic substance decomposing amount that produced by microorganism, by signal wire 22 to control device 23 feed measurement signal.In addition, as time meter 21, TOC(Total Organic C arbon can be used) meter, COD(Chemical OxygenDemand) meter, dissolved oxygen concentration meter, oxidation-reduction potentiometer etc., or be provided with the parts of multiple above-mentioned meter.
Control device 23 receives the measurement signal from time meter 21, according to the organism amount in aerator tank 1 and the organic substance decomposing amount that produced by microorganism, makes aeration pump 24 action, the aeration rate from loose device of air 1a is changed.That is, according to the increase of organism amount (the organic substance decomposing amount produced by microorganism), the aeration rate from loose device of air 1a is increased.
Like this, by carrying out the ozonize corresponding to the organic loading of microorganism in aerator tank 1, even if the organic concentration variation of aerator tank 1, also fully can carry out the organic decomposition produced by microorganism, can prevent the variation of the water quality treatment caused because of organic substance residues.
In addition, because be deposited to settling bath 6(with reference to Fig. 8) in the amount of excess sludge 4 also reduce significantly, so easily carry out discarded or burning etc., even and if when being returned to aerator tank 1, also can easy reprocessing.
More specifically, the organic concentration of aerator tank 1 is being measured with time meter 21, such as, utilize TOC to count or COD meter be judged as flowing into organic loading in water few when, or utilize dissolved oxygen concentration meter, when oxidation-reduction potentiometer is judged as that the dissolved oxygen in inflow water is high, make mud extractor pump 14 and adsorbs ozone groove 16 action, process water 3 containing mud is contacted with high-concentrated ozone gas, upgrading is carried out to the mud in the process water 3 containing mud and generates upgrading mud 25, and this upgrading mud 25 is returned to aerator tank 1, thus the organic loading in aerator tank 1 is maintained appropriate value relative to microorganism, can prevent from processing the organic substance residues in water.
As mentioned above, embodiments of the present invention 1(Fig. 1) method of wastewater treatment comprise: biological treatment step, utilizes the organism in microbial decomposition waste water 2; Aerating step, is blown into air to comprising containing in the process water 3 of mud of waste water 2; Ozone gas generating step, produces ozone gas; Ozone enrichment step, makes ozone gas be adsorbed in sorbent material, generates high-concentrated ozone gas; Gas-liquid mixed step, is blended in the process water 3 containing mud generated in biological treatment step and the high-concentrated ozone gas generated in ozone enrichment step; Ozone treatment step, makes the mud in the process water containing mud contact with high-concentrated ozone gas and carry out upgrading; Foldback step, the upgrading mud 25 by upgrading in ozone treatment step is returned in aerator tank 1; Microorganism active degree measuring process, measures the microorganism active degree in aerator tank 1; And rate-determining steps, based on the measuring result of microorganism active degree, control the extracted amount of the aeration rate in aerating step, the ozone gas amount in gas-liquid mixed step and the process water containing mud.
In addition, embodiments of the present invention 1(Fig. 1) Waste Water Treatment comprise: aerator tank 1(bio-processing components), utilize the organism in microbial decomposition waste water 2; Aeration pump 24 and loose device of air 1a(aeration devices), be blown into air to aerator tank 1; Ozone gas generator 11, produces ozone gas; Adsorbs ozone groove 16(ozone condensation means), make the ozone gas produced by ozone gas generator 11 be adsorbed in sorbent material, generate high-concentrated ozone gas; Injector 10(gas-liquid mixed parts), mix the process water 3 containing mud extracted out from aerator tank 1 and the high-concentrated ozone gas generated adsorbs ozone groove 16; Ozone reaction groove 19(ozonize parts), make the mud in the process water 3 containing mud contact with high-concentrated ozone gas and carry out upgrading; Mud foldback pump 7 and mud foldback pipe arrangement 20(foldback parts), to the upgrading mud 25 of aerator tank 1 foldback upgrading in ozone reaction groove 19; Time meter 21(microorganism active degree measurement component), measure the microorganism active degree in aerator tank 1; And control device 23(function unit), based on the measuring result of microorganism active degree, control loose device of air 1a(aeration devices) aeration rate, injector 10(gas-liquid mixed parts) in ozone gas amount and the extracted amount of process water 3 containing mud.
In the above-described configuration, depart from (ozone gas enrichment step) from adsorbs ozone groove 16 by making the ozone being adsorbed in sorbent material, intermittently can produce the high-concentrated ozone gas of more than 1000mg/L, by the high-concentrated ozone gas inject of more than 1000mg/L being contained the process water 3(ozone treatment step of mud), the organism forming mud is decomposed expeditiously, and the microbial cell wall in mud is destroyed.
Undertaken carry out a biological disposal upon (biological treatment step) by the mud at above-mentioned state forward direction aerator tank 1 foldback upgrading, the decomposition efficiency produced by microorganism improves, can improve ratio upgrading mud 25 being decomposed into water and carbonic acid gas.
In addition, by measuring the organic concentration in the organic substance decomposing amount that produced by microorganism or waste water, measure microbic activity degree (microorganism active degree measuring process), the situation of the organic substance decomposing produced by biological treatment can be held, by the air aeration amount that controls in loose device of air 1a according to organic substance decomposing situation and the mud extracted amount (rate-determining steps) for ozonize, the organic decomposition produced by microorganism can be promoted, and prevent the water degradation processing water.
Embodiment 2
In addition, at above-mentioned embodiment 1(Fig. 1) in, consider to remove the organism beyond phosphorus, upgrading mud 25 from ozone reaction groove 19 is directly returned in aerator tank 1, but in order to remove phosphorus further from upgrading mud 25, as shown in Figure 2, also can at the back segment of ozone reaction groove 19, sandwiched alkaline purification groove 29 and phosphorus separator tank 33, and anaerobic air tank 36(anaerobic groove is set at the upstream side of aerator tank 1).
Generally speaking, although microorganism takes in a certain amount of phosphorus, because cannot decompose, so need to remove phosphorus in addition.In addition, known in anaerobic air tank 36, microorganism discharges phosphorus, and by discharging phosphorus, also improves the organic substance decomposing ability of waste water 2.
Fig. 2 is the pie graph of the Waste Water Treatment representing embodiments of the present invention 2, for the parts identical with above-mentioned (with reference to Fig. 1), marks Reference numeral same as described above.In this case, the formation this point that the upgrading mud 25 that only addition of from ozonize removes phosphorus is different from above-mentioned.
In fig. 2, Waste Water Treatment comprises: the aerator tank 1 with loose device of air 1a; Aeration pump 24; Ozone reaction groove 19; Upgrading mud conveyance pump 27; Upgrading mud conveyance pipe arrangement 28; Alkaline purification groove 29; Alkaline sludge conveyance pump 31; Alkaline sludge pipe arrangement 32; Phosphorus separator tank 33; Phosphorus ligands sludge pump 34; Phosphorus ligands mud pipe arrangement 35; And anaerobic air tank 36.
In addition, in fig. 2, in order to avoid complicated and omit diagram, but the Waste Water Treatment of embodiments of the present invention 2 is identical with above-mentioned (Fig. 8), be provided with settling bath and mud foldback pump, this settling bath stores the process water 3 containing mud flowed out from aerator tank 1, and is separated into excess sludge and process water; This mud foldback pump is to the excess sludge in foldback settling bath in aerator tank 1.
In addition, identical with above-mentioned (Fig. 1), comprise control device 23, and at the upstream side of ozone reaction groove 19, be provided with injector 10, ozone gas generator 11, mud extraction pipe arrangement 13, mud extractor pump 14, high-concentrated ozone pipe arrangement 15, adsorbs ozone groove 16, ozone supply pipe arrangement 17 and gas-liquid mixed pipe arrangement 18.
In this case, control device 23 also controls each pump 27,31,34.
Ozone reaction groove 19, via upgrading mud conveyance pipe arrangement 28 and upgrading mud conveyance pump 27, is connected with alkaline purification groove 29.
Alkalescence liquid 30 is injected into alkaline purification groove 29 together with the upgrading mud 25 from ozone reaction groove 19.
Alkaline purification groove 29, via alkaline sludge pipe arrangement 32 and alkaline sludge conveyance pump 31, is connected with phosphorus separator tank 33.
Phosphorus separator tank 33, via phosphorus ligands mud pipe arrangement 35 and phosphorus ligands sludge pump 34, is connected with anaerobic air tank 36.
Anaerobic air tank 36 is located at the upstream side of aerator tank 1, between anaerobic air tank 36 and aerator tank 1, with waste water 2(phosphorus ligands mud 39) etc. the mode that can pass through be spaced.
The waste water 2 having flowed into anaerobic air tank 36, in anaerobic air tank 36, mixes with the phosphorus ligands mud 39 from phosphorus separator tank 33, after the phosphorus having carried out the microorganism in waste water 2 discharges process, flows into aerator tank 1.
Then, with reference to Fig. 1, the processing sequence of the embodiments of the present invention 2 shown in explanatory view 2 on one side.
As mentioned above, first, the ozonize by high-concentrated ozone gas in adsorbs ozone groove 16 and upgrading mud 25 by upgrading accumulate in ozone reaction groove 19.
Then, the upgrading mud 25 in ozone reaction groove 19 is extracted out by upgrading mud conveyance pump 27, is put in alkaline purification groove 29.
Then, in alkaline purification groove 29, by injecting alkaline liquid 30, the solubilized of upgrading mud 25 is carried out, the phosphorus dissolved of the inside microbes that is ingested.
Then, the alkaline sludge of phosphorus dissolved, via alkaline sludge conveyance pump 31, to be put to phosphorus separator tank 33 from alkaline purification groove 29.
Then, when phosphorus agglutinant 37 is added in phosphorus separator tank 33, the phosphorus reaction with dissolved and generate phosphorus agglutinator 38.Phosphorus agglutinator 38 is separated from alkaline sludge and is recovered.
On the other hand, in phosphorus separator tank 33, generate the phosphorus ligands mud 39 after alkaline sludge eliminates phosphorus, phosphorus ligands mud 39, via phosphorus ligands mud pipe arrangement 35 and phosphorus ligands sludge pump 34, is put to anaerobic air tank 36 from phosphorus separator tank 33.
Thereby, it is possible to extracted out since aerator tank 1 containing mud process water 3 in eliminate phosphorus after, carry out a biological disposal upon.
By dropping into phosphorus ligands mud 39 to the anaerobic air tank 36 of the upstream side being located at aerator tank 1, in anaerobic air tank 36, organic substance decomposing can be made, and phosphorus Institute of Micro-biology contained is discharged in process water.
Then, by making the process water processed in anaerobic air tank 36 flow into aerator tank 1, the microorganism panning after the phosphorus contained by process water can be made to be discharged by phosphorus, can reduce the phosphorus concentration in the process water 3 containing mud.
In addition, by the formation combined with above-mentioned (Fig. 1), the phosphorus ligands performance biologically in aerator tank 1 can also be improved further.
Specifically, phosphorus in anaerobic air tank 36 discharges vigorous time-bands, by improving the aeration rate of aerator tank 1, increase microorganism to the intake of phosphorus, the phosphorus ligands mud 39(upgrading mud 25 put into again in anaerobic air tank 36 can be improved) organic substance decomposing efficiency, and the phosphorus intake of the microorganism in aerator tank 1 can be improved, and reduce the phosphorus concentration contained by process water after biological treatment.
As mentioned above, embodiments of the present invention 2(Fig. 2) method of wastewater treatment except each step of above-mentioned embodiment 1, also comprise: step of being sick of, before biological treatment step, the microorganism in waste water 2 discharges phosphorus; Alkali treatment, the upgrading mud 25 to upgrading in ozone treatment step adds alkaline liquid 30; Phosphorus aggegation step, adds phosphorus agglutinant 37 to the upgrading mud that with the addition of alkali in alkali treatment; And phosphorus recycling step, be recovered in the phosphorus agglutinator 38 of aggegation in phosphorus aggegation step.
Step of being sick of and aerating step form anaerobic biological treatment step, in foldback step, the phosphorus ligands mud 39 after eliminating phosphorus are returned in waste water 2 in phosphorus aggegation step.
In addition, embodiments of the present invention 2(Fig. 2) Waste Water Treatment except the formation of above-mentioned (Fig. 1), also comprise: anaerobic air tank 36, be located at the upstream side of aerator tank 1; Alkaline purification groove 29(alkaline purification parts), at ozone reaction groove 19(ozonize parts) in the upgrading mud 25 of upgrading add alkaline liquid 30; Phosphorus separator tank 33(phosphorus aggegation parts), add phosphorus agglutinant 37 to the upgrading mud that with the addition of alkali in alkaline purification groove 29; And phosphorus recovery part, be recovered in the phosphorus agglutinator 38 of aggegation in phosphorus separator tank 33.
Anaerobic air tank 36 and aerator tank 1 form anaerobic bio-processing components, phosphorus ligands sludge pump 34 and phosphorus ligands mud pipe arrangement 35(foldback parts) the phosphorus ligands mud 39 eliminate phosphorus in phosphorus separator tank 33 after is returned in anaerobic air tank 36.
Like this, reclaim phosphorus by the upgrading mud 25 after ozonize, except the effect of above-mentioned embodiment 1, can also the phosphorus concentration be accumulated in aerator tank 1 be remained constant, prevent phosphorus from analysing to process is water-soluble.
Embodiment 3
In addition, at above-mentioned embodiment 1,2(Fig. 1, Fig. 2) in, the useless ozone gas 26 generated from ozone reaction groove 19 is all discharged, outside ozonolysis equipment (not shown) is utilized to be decomposed into oxygen, but in order to the utilising efficiency of the ozone gas that improves ozonize, also as shown in Figure 3, organic decomposition can be contributed to by making the useless ozone gas 26 of a part at ozone reaction groove 19A internal recycle.
Fig. 3 is the pie graph of the Waste Water Treatment representing embodiments of the present invention 3, represents to have added the situation of useless cycle of ozone parts in the formation of above-mentioned (Fig. 1).
In figure 3, for the parts identical with above-mentioned (with reference to Fig. 1), Reference numeral (or adding after Reference numeral " A ") same as described above is marked.
In figure 3, Waste Water Treatment comprises: aerator tank 1; Loose device of air 1a; Mud foldback pump 7; Injector 10; Ozone gas generator 11; Mud extracts pipe arrangement 13 out; Mud extractor pump 14; High-concentrated ozone pipe arrangement 15; Adsorbs ozone groove 16; Ozone supply pipe arrangement 17; Gas-liquid mixed pipe arrangement 18; Ozone reaction groove 19A; Mud foldback pipe arrangement 20; And time meter 21.
In addition, the circulation member as the ozone gas 26 that gives up of the Waste Water Treatment of Fig. 3, comprising: parting liquid conveyance pump 40; Parting liquid conveyance pipe arrangement 41, via parting liquid conveyance pump 40, is connected to ozone reaction groove 19A; Upgrading sewage sludge storage groove 42, the front end for parting liquid conveyance pipe arrangement 41 imports; Atomiser nozzle 43, is located at the front end opening of parting liquid conveyance pipe arrangement 41; Foam mud pipe arrangement 44, is communicated with ozone reaction groove 19A and upgrading sewage sludge storage groove 42; Useless ozone pipe arrangement 45; Useless cycle of ozone pipe arrangement 46; Useless cycle of ozone pump 47; And ozone diffuser 48.
In addition, in figure 3, in order to avoid complicated and omit diagram, but the Waste Water Treatment of embodiments of the present invention 3 is same as described above, comprise settling bath, mud foldback pump, control device 23 and aeration pump 24, this settling bath stores the process water 3 containing mud flowed out from aerator tank 1, and is separated into excess sludge and process water; This mud foldback pump is to the excess sludge in foldback settling bath in aerator tank 1.
In this case, control device 23 also controls each pump 40,47.
Ozone reaction groove 19A is via parting liquid conveyance pump 40 and parting liquid conveyance pipe arrangement 41, be connected with upgrading sewage sludge storage groove 42, transport the front end opening of pipe arrangement 41 at the parting liquid being connected to upgrading sewage sludge storage groove 42 from ozone reaction groove 19A, be provided with atomiser nozzle 43.
In addition, the top of ozone reaction groove 19A, via foam mud pipe arrangement 44, is connected with the top of upgrading sewage sludge storage groove 42.On the top of upgrading sewage sludge storage groove 42, be connected with the useless ozone pipe arrangement 45 and useless cycle of ozone pipe arrangement 46 of discharging useless ozone gas 26.Useless cycle of ozone pipe arrangement 46, via useless cycle of ozone pump 47, is connected with the ozone diffuser 48 of the inside being arranged at ozone reaction groove 19A.
In addition, upgrading sewage sludge storage groove 42, via mud foldback pump 7 and mud foldback pipe arrangement 20, is connected with aerator tank 1.
Then, the processing sequence of the embodiments of the present invention 3 shown in explanatory view 3.
As shown in Figure 3, when being blown into useless ozone gas 26 to the upgrading mud in the ozone reaction groove 19A generated by ozonize from ozone diffuser 48, upgrading mud bubbles, and produces foam mud 49.
Now, because become film like at the surfaction mud of foam mud 49, so the contact area of the upgrading mud of useless ozone gas contained by foam and film is large.Therefore, promote the reaction of the organism contained by upgrading mud and useless ozone gas, organism is by ozone decomposed expeditiously, and the ozone gas that gives up is decomposed into oxygen expeditiously.
Foam mud 49 by ozone decomposed expeditiously utilizes the pressure of the useless ozone gas 26 be filled with from ozone diffuser 48 and is transported to the top of ozone reaction groove 19A, is transported in upgrading sewage sludge storage groove 42 by foam mud pipe arrangement 44.
Like this, utilize the upgrading mud of high-concentrated ozone gas processing, become foam mud 49 from ozone reaction groove 19A from the process water 3 containing mud, quilt is also transported to upgrading sewage sludge storage groove 42.
Its result, in the bottom of ozone reaction groove 19A, mud is removed, the residual lower molten parting liquid 50 depositing ozone gas containing high density.
Then, parting liquid 50 in ozone reaction groove 19A extracted out by parting liquid conveyance pump 40, from the atomiser nozzle 43 of the front end opening of parting liquid conveyance pipe arrangement 41 to upgrading sewage sludge storage groove 42 internal spraying, thus is separated into by parting liquid 50 and moltenly deposits ozone gas and water.
Useless ozone gas 26 separated in upgrading sewage sludge storage groove 42 is discharged to outside via useless ozone pipe arrangement 45, and a part is drawn out of via useless cycle of ozone pipe arrangement 46 and useless cycle of ozone pump 47, and is blown into the upgrading mud in ozone reaction groove 19A from ozone diffuser 48.
Thus, the high-concentrated ozone gas produced from adsorbs ozone groove 16 can comprise useless ozone gas 26 ground and be used in sludge disintegration expeditiously.
On the other hand, via the water that atomiser nozzle 43 is separated in upgrading sewage sludge storage groove 42, mix with the foam mud 49 be imported into by foam mud pipe arrangement 44, accumulate as upgrading mud 25A in the bottom of upgrading sewage sludge storage groove 42.
Below, upgrading mud 25A, via mud foldback pipe arrangement 20 and mud foldback pump 7, is returned to aerator tank 1.
As mentioned above, embodiments of the present invention 3(Fig. 3) method of wastewater treatment except each step of above-mentioned embodiment 1, also comprise: foaming step, be blown into gas by the upgrading mud to upgrading in ozone treatment step and make it bubble, upgrading mud being separated into foam mud 49 and containing the molten parting liquid 50 depositing ozone gas; Gas delivery step, by spraying to parting liquid 50, is separated into useless ozone gas 26 and water by parting liquid 50; And gas recycle step, the useless ozone gas 26 be separated in gas delivery step is utilized as the gas be blown into the upgrading mud in ozone reaction groove 19A.
In foldback step, using the water that has been separated in gas delivery step together with foam mud 49 as upgrading mud 25A, be returned to aerator tank 1.
In addition, embodiments of the present invention 3(Fig. 3) Waste Water Treatment except the formation of above-mentioned (Fig. 1), also comprise: ozone diffuser 48(foam unit), by being blown into gas to the upgrading mud (foam mud 49, parting liquid 50) in ozone reaction groove 19A and making it bubble, upgrading mud is separated into foam mud 49 and the parting liquid 50 containing ozone gas; Atomiser nozzle 43(gas delivery parts), by spraying to parting liquid 50, parting liquid 50 is separated into useless ozone gas 26 and water; And useless cycle of ozone pipe arrangement 46 and useless cycle of ozone pump 47(give up cycle of ozone parts), the useless ozone gas 26 be separated by atomiser nozzle 43 is utilized as the gas be blown into the upgrading mud in ozone reaction groove 19A.
Mud foldback pump 7 and mud foldback pipe arrangement 20(foldback parts) water be separated by atomiser nozzle 43 is returned to aerator tank 1 together with foam mud 49.
Like this, by using useless ozone gas 26, the upgrading mud in ozone reaction groove 19A is bubbled, the upgrading mud of film like can be made to be attached to foam and to become foam mud 49, become the upgrading mud of film like to increase significantly compared with situation about being present in liquid with the contact area of the useless ozone gas 26 contained by foam, so can react with the high-level efficiency of foam mud 49 and decomposition can be made promptly to carry out by useless ozone gas 26.
In addition, eliminate the parting liquid 50(process water of foam and mud) contained by ozone gas due to the spraying from atomiser nozzle 43, be separated into water and useless ozone gas 26, separated useless ozone gas 26 is via useless cycle of ozone pipe arrangement 46 and useless cycle of ozone pump 47, be imported into the ozone diffuser 48 in ozone reaction groove 19A, by being used in the generation of foam mud 49, except the effect of above-mentioned embodiment 1, in the process of ozonize, the high-concentrated ozone gas of the process water 3 be injected into containing mud can be used in sludge treatment expeditiously.
In addition, for above-mentioned embodiment 3(Fig. 3), illustrate and be applied to above-mentioned embodiment 1(Fig. 1) the example of formation, but also can be applied to above-mentioned embodiment 2(Fig. 2) formation.
In this condition, the upgrading mud 25A in upgrading sewage sludge storage groove 42 is imported into the alkaline purification groove 29 in Fig. 2, except the high-level efficiency process produced by high-concentrated ozone gas (with useless ozone gas 26), can also remove phosphorus.
Embodiment 4
In addition, for above-mentioned embodiment 1 ~ 3(Fig. 1 ~ Fig. 3), do not mention the parts attracting high-concentrated ozone gas, but also can as shown in Figure 4, and between adsorbs ozone groove 16 and ozone reaction groove 19, sandwiched attracts the gas attractor 70 of high-concentrated ozone gas.
Fig. 4 is the pie graph of the Waste Water Treatment representing embodiments of the present invention 4, for the parts identical with above-mentioned (with reference to Fig. 1), marks Reference numeral same as described above and omits detailed description.
Waste Water Treatment shown in Fig. 4 replaces the injector 10 of above-mentioned (Fig. 1), and possesses the gas attractor 70 for attracting high-concentrated ozone gas from adsorbs ozone groove 16.
In the diagram, adsorbs ozone groove 16, via high-concentrated ozone pipe arrangement 15 and gas attractor 70, is connected with ozone reaction groove 19.
In addition, the mud extracting the process water 3 containing mud from aerator tank 1 out extracts pipe arrangement 13 out via mud extractor pump 14, is connected to ozone reaction groove 19.
In addition, at ozone reaction groove 19, by useless ozone pipe arrangement 45, be provided with the drawdown pump 71 for reducing pressure to ozone reaction groove 19.
Gas attractor 70 is connected with control device 23 by signal wire 22 with drawdown pump 71, is driven by control device 23.
Then, the processing sequence of the working of an invention mode 4 shown in explanatory view 4.
First, under the control of control device 23, utilize high-concentrated ozone gas that gas attractor 70 is drawn out of from adsorbs ozone groove 16 by high-concentrated ozone pipe arrangement 15, be injected into ozone reaction groove 19.
Now, the injection moment of control device 23 and high-concentrated ozone gas inject ozone reaction groove 19 correspondingly, drives mud extractor pump 14, extracts the process water 3 containing mud out from aerator tank 1.Below, the process water 3 containing mud be drawn out of from aerator tank 1 flows into ozone reaction groove 19 together with high-concentrated ozone gas.
In ozone reaction groove 19, with injection moment of high-concentrated ozone gas correspondingly, drawdown pump 71 action according to the control signal carrying out self-control device 23 by signal wire 22, the inside of ozone reaction groove 19 is depressurized.
In addition, the process water 3 containing mud flowing into ozone reaction groove 19 contacts under reduced atmosphere with high-concentrated ozone gas, and thus, the mud contained by process water 3 containing mud, by high-concentrated ozone gas upgrading, becomes upgrading mud 25.
In addition, useless ozone gas 26 is discharged from ozone reaction groove 19 via drawdown pump 71.
In addition, in the same manner as described above, lodged in the upgrading mud 25 of ozone reaction groove 19 by the contact with ozone gas, utilize mud foldback pump 7 to be returned to aerator tank 1 by mud foldback pipe arrangement 20.Because upgrading mud 25 is processed expeditiously by high-concentrated ozone gas, so in aerator tank 1, microorganism efficiency highland is utilized to be broken down into carbonic acid gas and water.
Then, with reference to Fig. 5 while will in ozone reaction groove 19, the process water 3 containing mud under reduced atmosphere be illustrated compared with situation about not reducing pressure by the process of upgrading.
Fig. 5 schematically shows that mud utilizes the high-concentrated ozone gas under reduced atmosphere and the explanatory view of process that dissolves, and Fig. 5 (a) represents situation about not reducing pressure, and Fig. 5 (b) represents the situation of decompression.
As shown in Figure 5, in the ozone reaction groove 19 being injected with high-concentrated ozone gas, generate the ozone gas bubble 72 containing high-concentrated ozone gas.
Usually, the negative pressure that the decomposer (not shown) that the inside reason of ozone reaction groove 19 gives up ozone gas 26 produces, pressure is higher than normal atmosphere.
At a pressure exceeding the atmospheric pressure, as shown in Fig. 5 (a), because the high-concentrated ozone gas contained by ozone gas bubble 72 is easily dissolved in the process water 3 containing mud, so generate a large amount of ozone water 73 around ozone gas bubble 72.
On the other hand, under reduced atmosphere, as shown in Fig. 5 (b), because the high-concentrated ozone gas contained by ozone gas bubble 72 is difficult to the process water 3 be dissolved in containing mud, around ozone gas bubble 72, only generate a small amount of ozone water 73.
Now, the mud 74 in the process water 3 containing mud directly contacts with ozone gas bubble 72, because by high-concentrated ozone gas dissolving, so upgrading is abundant.
On the other hand, because the ozone concn contained by ozone water 73 is below 100mg/L, so utilize the upgrading of ozone water 73 pairs of mud 74 and the high-concentrated ozone gas utilized contained by ozone gas bubble 72 to compared with the upgrading of mud 74, upgrading is insufficient.
As the one of the main reasons that the ozone concn of ozone water 73 is not high, be that the decompose themselves speed of the ozone molecule being dissolved in ozone water 73 is large compared with the ozone molecule of ozone gas bubble 72.Therefore, the ozone molecule contained by ozone water 73 does not directly contact with mud 74, and the ratio being decomposed into oxygen is large.
That is, as Fig. 5 (a), under mud 74 with the exposed to contact state of ozone water 73, upgrading is insufficient.
In addition, as Fig. 5 (a) because a large amount of high-concentrated ozone gas dissolvings in process water 3 containing mud time, the concentration of ozone gas of ozone gas bubble 72 also reduces, so the upgrading effect of ozone gas bubble 72 pairs of mud 74 also reduces.
In contrast, as Fig. 5 (b), when utilizing the inside of drawdown pump 71 pairs of ozone reaction grooves 19 to be exhausted, because ozone gas solubleness reduces, so ozone gas is suppressed to the meltage of the process water 3 containing mud.
Thus, the concentration of ozone gas of ozone gas bubble 72 is maintained high density, and the upgrading brought by ozone gas of the mud 74 contacted with ozone gas bubble 72 is promoted.
In addition, because the dissolving of ozone to the process water 3 containing mud reduces, the utilising efficiency of the ozone gas in the upgrading of mud 74 rises.
In addition, the process water 3 containing mud is dissolved in from ozone gas bubble 72 in order to suppress ozone, need to utilize drawdown pump 71, make the internal pressure of ozone reaction groove 19 with absolute manometer, higher than water vapour pressure (being 2.3kPa 20 DEG C time) and lower than normal atmosphere (100kPa), bestly need decompression to be " scope of 10kPa ~ 90kPa " to absolute pressure.
Then, the parts injecting high-concentrated ozone gas to ozone reaction groove 19 are described with reference to Fig. 6.
Fig. 6 is the pie graph representing the parts injecting high-concentrated ozone gas to ozone reaction groove 19 particularly, represents configuration examples different separately with Fig. 6 (a) and Fig. 6 (b).
In Fig. 6 (a), Fig. 6 (b), at ozone reaction groove 19 via pressure survey pipe arrangement 76, pressure warning unit 77 is installed, pressure warning unit 77 is connected with control device 23(with reference to Fig. 4) signal wire 22.
Control device 23 reads the observed value of pressure warning unit 77 via signal wire 22, by the feedback control corresponding to pressure measuring value, via signal wire 22, regulates the free air delivery of drawdown pump 71, the internal pressure of ozone reaction groove 19 is controlled in above-mentioned scope.
In figure 6 (a), the bottom of ozone reaction groove 19 is provided with diffuser vane material 75, diffuser vane material 75 is connected with high-concentrated ozone pipe arrangement 15.
High-concentrated ozone gas, is injected in ozone reaction groove 19 from gas attractor 70 via high-concentrated ozone pipe arrangement 15 and diffuser vane material 75, is ejected after becoming small ozone gas bubble 72.
In addition, employ diffuser vane material 75 in figure 6 (a), but may not be defined in this, also can use the arbitrary instrument (diffuser etc.) offering micro-holes.
In addition, the stirrer, the ultrasonic oscillator that stir ozone gas also can be set near the ozone gas inlet to ozone reaction groove 19 injection of ozone gas, thus, more small ozone gas bubble can also be produced.
On the other hand, in Fig. 6 (b), in the bottom of ozone reaction groove 19, be provided with the injector 10 of the parts converged with high-concentrated ozone gas as the process water 3 made containing mud.
On injector 10, be connected with mud and extract pipe arrangement 13 and the high-concentrated ozone pipe arrangement 15 via gas attractor 70 out.
In this case, be injected into the high-concentrated ozone gas of injector 10 by high-concentrated ozone pipe arrangement 15, due to the shear-stress produced by the process water 3 containing mud, after becoming the ozone gas bubble 72 by microminiaturization, be injected into ozone reaction groove 19.
But because the internal pressure of ozone reaction groove 19 is depressurized pump 71 be set as below normal atmosphere, even so tiny bubble, ozone gas is also suppressed to the dissolving of the process water 3 containing mud, produce the ozone gas bubble 72 of high density.
In addition, in Fig. 6 (b), use injector 10 to be mixed with ozone gas and the process water 3 containing mud, but be not limited to injector 10, also can use threeway pipe arrangement etc.
As mentioned above, embodiments of the present invention 4(Fig. 4) method of wastewater treatment comprise: biological treatment step, utilizes the organism in microbial decomposition waste water 2; Aerating step, is blown into air in waste water 2; Ozone gas generating step, produces ozone gas; Ozone enrichment step, makes ozone gas be adsorbed in sorbent material, generates high-concentrated ozone gas; Attract step, attract the high-concentrated ozone gas generated in ozone enrichment step; Ozone treatment step, makes the process water 3 containing mud contact with attracted high-concentrated ozone gas and carry out upgrading to mud; Depressurization steps, reduces pressure to the atmosphere that the process water 3 made containing mud contacts with high-concentrated ozone gas; Foldback step, the upgrading mud 25 by upgrading in ozone treatment step is returned in waste water 2; Microorganism active degree measuring process, measures the microorganism active degree in waste water 2; And rate-determining steps, based on the measuring result of microorganism active degree, control the extracted amount of the aeration rate in aerating step and the process water 3 containing mud.
In addition, the Waste Water Treatment of embodiments of the present invention 4 comprises: aerator tank 1(bio-processing components), utilize the organism in microbial decomposition waste water 2; Aeration pump 24 and loose device of air 1a(aeration devices), be blown into air to aerator tank 1; Ozone gas generator 11, produces ozone gas; Adsorbs ozone groove 16(ozone condensation means), make the ozone gas produced from ozone gas generator 11 be adsorbed in sorbent material, generate high-concentrated ozone gas; Gas attractor 70(attracts parts), attract the high-concentrated ozone gas generated in adsorbs ozone groove 16; Ozone reaction groove 19(ozonize parts), make the mud 74 in the process water 3 containing mud contact with attracted high-concentrated ozone gas and carry out upgrading to mud; Drawdown pump 71(decompression member), the atmosphere that the mud 74 in the process water 3 containing mud contacts with attracted high-concentrated ozone gas is reduced pressure; Mud foldback pipe arrangement 20(foldback parts), the upgrading mud 25 by upgrading in ozone reaction is because of groove 19 is returned to aerator tank 1; Time meter 21(microorganism active degree measurement component), measure the microorganism active degree in aerator tank 1; And control device 23(function unit), based on the measuring result of microorganism active degree, control loose device of air 1a(aeration devices) aeration rate and the extracted amount of process water 3 containing mud.
Like this, by making high-concentrated ozone gas contact with mud 74 under reduced atmosphere, ozone utilising efficiency when generating upgrading mud 25 can be improved, and high-concentrated ozone gas can be utilized to generate upgrading mud 25.
Namely, even if when the high-concentrated ozone gas inject of more than the 1000mg/L will produced from adsorbs ozone groove 16 is to process water 3 containing mud, also because due to reduced atmosphere, suppress high-concentrated ozone gas dissolving in process water, so the consumption reduction because processing the high-concentrated ozone gas that water causes, the efficiency of ozone gas to mud upgrading can be improved.
In addition, because the biological degradability of the upgrading mud 25 by high-concentrated ozone gas processing is high, so in aerator tank 1, the decomposition efficiency being decomposed into carbonic acid gas and water improves, the increase of the mud 74 in aerator tank 1 can be suppressed, and the variation of the water quality treatment preventing organic substance residues from causing.
In addition, as shown in Figure 6, via pressure survey pipe arrangement 76, pressure warning unit 77 is installed at ozone reaction groove 19, the observed value of pressure warning unit 77 is imported into control device 23, so control device 23 is according to pressure measuring value, feedback control is carried out to the free air delivery of drawdown pump 71, thus the internal pressure of ozone reaction groove 19 can be adjusted in optimum range.
Claims (10)
1. a method of wastewater treatment, is characterized in that,
This method of wastewater treatment comprises:
Biological treatment step, utilizes the organism in microbial decomposition waste water;
Aerating step, is blown into air in above-mentioned waste water;
Ozone gas generating step, produces ozone gas;
Ozone enrichment step, makes above-mentioned ozone gas be adsorbed in sorbent material, generates high-concentrated ozone gas;
Gas-liquid mixed step, is blended in the process water containing mud generated in above-mentioned biological treatment step and the high-concentrated ozone gas generated in above-mentioned ozone enrichment step;
Ozone treatment step, makes the mud in the above-mentioned process water containing mud contact with above-mentioned high-concentrated ozone gas and carry out upgrading;
Foldback step, the upgrading mud by upgrading in above-mentioned ozone treatment step is returned in above-mentioned waste water;
Microorganism active degree measuring process, measures the microorganism active degree in above-mentioned waste water; And
Rate-determining steps, based on the measuring result of mentioned microorganism activity degree, controls the ozone gas amount in the aeration rate in above-mentioned aerating step, above-mentioned gas-liquid mixed step and the above-mentioned extracted amount containing the process water of mud.
2. a method of wastewater treatment, is characterized in that,
This method of wastewater treatment comprises:
Biological treatment step, utilizes the organism in microbial decomposition waste water;
Aerating step, is blown into air in above-mentioned waste water;
Ozone gas generating step, produces ozone gas;
Ozone enrichment step, makes above-mentioned ozone gas be adsorbed in sorbent material, generates high-concentrated ozone gas;
Attract step, attract the above-mentioned high-concentrated ozone gas generated in above-mentioned ozone enrichment step;
Ozone treatment step, makes the process water containing mud generated in above-mentioned biological treatment step contact with attracted above-mentioned high-concentrated ozone gas and carry out upgrading to mud;
Depressurization steps, reduces pressure to the atmosphere making the above-mentioned process water containing mud contact with above-mentioned high-concentrated ozone gas;
Foldback step, the upgrading mud by upgrading in above-mentioned ozone treatment step is returned in above-mentioned waste water;
Microorganism active degree measuring process, measures the microorganism active degree in above-mentioned waste water; And
Rate-determining steps, based on the measuring result of mentioned microorganism activity degree, controls the aeration rate in above-mentioned aerating step and the above-mentioned extracted amount containing the process water of mud.
3. method of wastewater treatment according to claim 2, is characterized in that,
The atmosphere that the above-mentioned process water containing mud is contacted with above-mentioned high-concentrated ozone gas is set to that absolute pressure is in the scope of 10kPa ~ 90kPa by above-mentioned depressurization steps.
4. method of wastewater treatment according to claim 1, is characterized in that,
This method of wastewater treatment comprises:
Lonely step, before biological treatment step, the microorganism in above-mentioned waste water discharges phosphorus;
Alkali treatment, the upgrading mud to upgrading in above-mentioned ozone treatment step adds alkaline liquid;
Phosphorus aggegation step, adds phosphorus agglutinant to the upgrading mud that with the addition of alkali in above-mentioned alkali treatment; And
Phosphorus recycling step, is recovered in the phosphorus agglutinator of aggegation in above-mentioned phosphorus aggegation step,
Above-mentioned lonely step and above-mentioned aerating step form anaerobic biological treatment step,
In above-mentioned foldback step, the phosphorus ligands mud eliminating phosphorus in above-mentioned phosphorus aggegation step is returned in above-mentioned waste water.
5. the method for wastewater treatment according to any one of Claims 1 to 4, is characterized in that,
This method of wastewater treatment comprises:
Foaming step, is blown into gas by the upgrading mud to upgrading in above-mentioned ozone treatment step and makes it bubble, and above-mentioned upgrading mud is separated into foam mud and containing the molten parting liquid depositing ozone gas;
Gas delivery step, by spraying to above-mentioned parting liquid, is separated into useless ozone gas and water by above-mentioned parting liquid; And
Gas recycle step, by the useless ozone gas be separated in above-mentioned gas separating step, utilizes as the gas be blown into the upgrading mud in above-mentioned ozonize parts,
In above-mentioned foldback step, the water be separated in above-mentioned gas separating step is returned in above-mentioned waste water together with above-mentioned foam mud.
6. a Waste Water Treatment, is characterized in that,
This Waste Water Treatment comprises:
Bio-processing components, utilizes the organism in microbial decomposition waste water;
Aeration devices, is blown into air to above-mentioned bio-processing components;
Ozone gas generator, produces ozone gas;
Ozone condensation means, makes the ozone gas produced by above-mentioned ozone gas generator be adsorbed in sorbent material, generates high-concentrated ozone gas;
Gas-liquid mixed parts, mix the process water containing mud extracted out from above-mentioned bio-processing components and the high-concentrated ozone gas generated by above-mentioned ozone condensation means;
Ozonize parts, make the mud in the above-mentioned process water containing mud contact with above-mentioned high-concentrated ozone gas and carry out upgrading;
Foldback parts, are returned to above-mentioned bio-processing components by utilizing the upgrading mud of above-mentioned ozonize parts upgrading;
Microorganism active degree measurement component, measures the microorganism active degree in above-mentioned bio-processing components; And
Function unit, based on the measuring result of mentioned microorganism activity degree, controls the ozone gas amount in the aeration rate of above-mentioned aeration devices, above-mentioned gas-liquid mixed parts and the above-mentioned extracted amount containing the process water of mud.
7. a Waste Water Treatment, is characterized in that,
This Waste Water Treatment comprises:
Bio-processing components, utilizes the organism in microbial decomposition waste water;
Aeration devices, is blown into air to above-mentioned bio-processing components;
Ozone gas generator, produces ozone gas;
Ozone condensation means, makes the ozone gas produced by above-mentioned ozone gas generator be adsorbed in sorbent material, generates high-concentrated ozone gas;
Attract parts, attract the above-mentioned high-concentrated ozone gas generated by above-mentioned ozone condensation means;
Ozonize parts, what make to have extracted out from above-mentioned bio-processing components contacts with attracted above-mentioned high-concentrated ozone gas containing the mud in the process water of mud and carries out upgrading to mud;
Decompression member, reduces pressure to the atmosphere that the mud in the above-mentioned process water containing mud contacts with above-mentioned attracted high-concentrated ozone gas;
Foldback parts, are returned to above-mentioned bio-processing components by utilizing the upgrading mud of above-mentioned ozonize parts upgrading;
Microorganism active degree measurement component, measures the microorganism active degree in above-mentioned bio-processing components; And
Function unit, based on the measuring result of mentioned microorganism activity degree, controls the aeration rate of above-mentioned aeration devices and the extracted amount of the above-mentioned process water containing mud.
8. Waste Water Treatment according to claim 7, is characterized in that,
The atmosphere that the above-mentioned process water containing mud is contacted with above-mentioned high-concentrated ozone gas is set to that absolute pressure is in the scope of 10kPa ~ 90kPa by above-mentioned decompression member.
9. Waste Water Treatment according to claim 6, is characterized in that,
This Waste Water Treatment comprises:
Anaerobic air tank, is located at the upstream side of above-mentioned aerator tank;
Alkaline purification parts, add alkaline liquid at the upgrading mud by above-mentioned ozonize parts upgrading;
Phosphorus aggegation parts, add phosphorus agglutinant to the upgrading mud that be with the addition of alkali by above-mentioned alkaline purification parts; And
Phosphorus recovery part, the phosphorus agglutinator reclaimed by the aggegation of above-mentioned phosphorus aggegation parts,
Above-mentioned anaerobic air tank and above-mentioned aerator tank form anaerobic bio-processing components;
The phosphorus ligands mud eliminating phosphorus by above-mentioned phosphorus aggegation parts is returned to above-mentioned anaerobic air tank by above-mentioned foldback parts.
10. the Waste Water Treatment according to any one of claim 6 ~ 9, is characterized in that,
This Waste Water Treatment comprises:
Foam unit, makes it bubble by being blown into gas to the upgrading mud in above-mentioned ozonize parts, above-mentioned upgrading mud is separated into foam mud and the parting liquid containing ozone gas;
Gas delivery parts, by spraying to above-mentioned parting liquid, are separated into useless ozone gas and water by above-mentioned parting liquid; And
Gas circulation parts, by the useless ozone gas be separated by above-mentioned gas separating component, utilize as the gas be blown into the upgrading mud in above-mentioned ozonize parts,
The water be separated by above-mentioned gas separating component is returned to above-mentioned aerator tank by above-mentioned foldback parts together with above-mentioned foam mud.
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| US10259731B2 (en) * | 2014-04-29 | 2019-04-16 | Mitsubishi Electric Corporation | Sludge treatment system and sludge treatment method |
| CN107531524B (en) * | 2015-05-27 | 2022-01-11 | 三菱电机株式会社 | Water treatment system and water treatment method |
| CN105688595A (en) * | 2016-03-29 | 2016-06-22 | 威格气体纯化科技（苏州）股份有限公司 | Ozone removal purifying column and glove box |
| JP6877255B2 (en) * | 2017-06-14 | 2021-05-26 | 三菱電機株式会社 | Wastewater treatment system and wastewater treatment method |
| JP6818671B2 (en) * | 2017-10-10 | 2021-01-20 | 三菱電機株式会社 | Wastewater treatment system |
| JP7241608B2 (en) * | 2019-06-04 | 2023-03-17 | 三菱電機株式会社 | Wastewater treatment system and wastewater treatment method |
| CN112607987A (en) * | 2020-12-29 | 2021-04-06 | 吉林农业大学 | System for ecological enzyme preparation is used for mud decrement |
| CN114380448B (en) * | 2022-01-26 | 2024-06-11 | 海宁天纵电子科技有限公司 | Method for harmless treatment of residue liquid of refined sesame seed medicine based on micro-incineration method |
| CN114380449B (en) * | 2022-01-26 | 2023-11-14 | 海宁天纵电子科技有限公司 | Device is destroyed to sesame essence medicine raffinate based on oxidation incineration method |
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