CN103626294B - The high-efficiency composite hydrolysis device that a kind of anaerobism-oxygen of holding concurrently replaces and method for hydrolysis - Google Patents
The high-efficiency composite hydrolysis device that a kind of anaerobism-oxygen of holding concurrently replaces and method for hydrolysis Download PDFInfo
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Abstract
The invention provides a kind of anaerobism-hold concurrently the high-efficiency composite hydrolysis device that replaces of oxygen and method for hydrolysis.Middle part in hydrolytic tank described in two schemes of apparatus of the present invention is provided with two intensive packing areas of diagonal angle setting and sparse packing area, and the feed-water end in hydrolytic tank is set to import suspended sludge area, and the water side in hydrolytic tank is set to outlet suspended sludge area.Intensive packing area forms double oxygen environment, sparse packing area and suspended sludge area by perforated pipe pneumatic blending and stirs formation anaerobic environment by impeller.Method of the present invention passes through backflow aerobic sludge to hydrolytic tank, significantly can improve the sludge concentration of hydrolytic tank, and be vaccinated with a large amount of anaerobism, double oxygen bacterium, owing to setting up packing area in hydrolytic tank, the microbial biomass of microbial film apposition growth can be increased in a large number, effectively can improve hydrolysis efficiency.The hydrolysis process that this double oxygen and anaerobism replace is due to the existence of oxygen bacterium of holding concurrently in a large number, and the hydrolysis for lower concentration, hardly degraded organic substance has good removal effect.
Description
Technical field
The present invention relates to a kind of anaerobism-hold concurrently the high-efficiency composite hydrolysis device that replaces of oxygen and method for hydrolysis, belong to the preconditioning technique field of trade effluent or municipal effluent.
Background technology
Traditional acidication technique, as the preconditioning technique of waste water, from the eighties in 20th century, is widely used, but is mainly used in the field of industrial waste water treatment of difficult for biological degradation, high density in wastewater treatment in China field.Traditional acidication pool process is generally anaerobic environment, " four-stage " according to anaerobically fermenting is theoretical, make full use of anaerobically fermenting major control at hydrolysis stage, cultivating hydrolysis bacterium and acid-producing bacteria, is small organic molecule by the organic matter degradation of the macromole in waste water, difficult degradation.Thus the biodegradable composition BOD significantly improved in waste water, improve biodegradability ratio B/C, be conducive to the efficiency of follow-up Aerobic biological process.
In recent years, increasingly strict along with China's sewage drainage standard, the mode of run-off system and sewage disposal also there occurs larger change, and increasing trade effluent after pre-treatment, enter municipal sewage plant and traditional sanitary sewage is handled together.Particularly for industry centralization district, industrial park, the trade effluent ratio of its municipal sewage plant is up to more than 80%, and acidication technique is also widely used in these in recent years containing in the comprehensive wastewater treatment plant of trade effluent.However, the trade effluent that these comprehensive wastewater treatment plants receive generally all have passed through pre-treatment, the water quality entering composite wastewater factory has the feature that concentration is low, biodegradability is low, therefore traditional anaerobic hydrolysis technique is for the water quality characteristic of lower concentration, difficult degradation, the effect of its process and efficiency are far below the pre-treatment of trade effluent being applied to high density, difficult degradation.
This mainly creates anaerobic hydrolysis bacterium, acid-producing bacteria etc. due to traditional hydrolysis process, fully to the decomposition of hardly degraded organic substance, can promote the amount reproduction of anaerobic hydrolysis bacterium, acid-producing bacteria simultaneously.But when influent concentration significantly reduces, particularly trade effluent is after anaerobic treatment, anaerobic hydrolysis is again adopted to be difficult to significantly improve hydrolysis efficiency.Although many methods are by increasing sludge concentration, comprise the method for increase bio-carrier to improve the quantity of microorganism, thus the effect of enhancement process, because lower, the biodegradable ratio of organic concentration in water inlet is lower, in engineer applied, under strictly anaerobic condition, sludge concentration is difficult to significantly improve.And increase bio-carrier at hydrolytic tank, do not change the envrionment conditions of hydrolytic tank script anaerobism.Research shows, under double oxygen environment, there is a large amount of concurrent oxidation and aquoiysis bacterium, can promote hydrolysis and the acidification reaction of hardly degraded organic substance.
For the high-proportion industrial waste water sewage work in industrial park, industry centralization district, traditional hydrolysis pretreatment process still exists that hydrolysis efficiency is low, the problem of weak effect mostly.Because water inlet under-nutrition, hydrolytic tank hydrolysis bacterium and acid-producing bacteria are not enough, microorganism concn is difficult to improve, therefore efficiency is low.For improving hydrolysis bacterium and acid-producing bacteria, although much technique takes improve the method such as sludge concentration, increase biologic packing material, simple anaerobic hydrolysis is applicable to high-concentration industrial-water, inadaptable pretreated lower concentration, used water difficult to degradate.
Summary of the invention
The object of the invention is to solve above-mentioned prior art Problems existing, namely simple anaerobic hydrolysis technique is applicable to high-concentration industrial-water, inadaptable pretreated lower concentration, used water difficult to degradate.And then a kind of anaerobism-hold concurrently the high-efficiency composite hydrolysis device that replaces of oxygen and method for hydrolysis is provided.
The object of the invention is to be achieved through the following technical solutions:
The scheme one of device: the high-efficiency composite hydrolysis device that a kind of anaerobism-oxygen of holding concurrently replaces, comprise, sewage inlet, backflow aerobic sludge mouth, impeller, perforated pipe air agitator, shore pipe, effluent overflow weir water, agitator and hydrolytic tank, middle part in described hydrolytic tank is provided with two intensive packing areas of diagonal angle setting and sparse packing area, one end in hydrolytic tank is set to import suspended sludge area, the other end in hydrolytic tank is set to outlet suspended sludge area, import suspended sludge area and the inwall of hydrolytic tank in outlet suspended sludge area are respectively equipped with an impeller, the wall of the hydrolytic tank bottom of one end, import suspended sludge area is connected with sewage inlet and backflow aerobic sludge mouth, the wall on the hydrolytic tank top of one end, import suspended sludge area is connected with agitator, bottom in the hydrolytic tank of outlet one end, suspended sludge area is provided with perforated pipe air agitator and shore pipe, the pond of the hydrolytic tank of outlet one end, suspended sludge area is along being provided with effluent overflow weir water.
The scheme two of device: the high-efficiency composite hydrolysis device that a kind of anaerobism-oxygen of holding concurrently replaces, comprise, sewage inlet, backflow aerobic sludge mouth, impeller, perforated pipe air agitator, effluent overflow weir water, agitator, spoil disposal gate, training wall and hydrolytic tank, middle part in described hydrolytic tank is provided with two intensive packing areas of diagonal angle setting and sparse packing area, one end in hydrolytic tank is set to import suspended sludge area, the other end in hydrolytic tank is set to outlet suspended sludge area, import suspended sludge area and the inwall of hydrolytic tank in outlet suspended sludge area are respectively equipped with an impeller, the wall of the hydrolytic tank bottom of one end, import suspended sludge area is connected with sewage inlet and backflow aerobic sludge mouth, the wall on the hydrolytic tank top of one end, import suspended sludge area is connected with agitator, bottom in the hydrolytic tank of outlet one end, suspended sludge area is provided with perforated pipe air agitator, the pond of the hydrolytic tank of outlet one end, suspended sludge area is along being provided with effluent overflow weir water, the bottom of the hydrolytic tank of effluent overflow weir water bottom is provided with spoil disposal gate, a training wall is respectively provided with in import suspended sludge area and outlet suspended sludge area.
Method for hydrolysis is as follows:
The volumetric ratio of intensive packing area and sparse packing area and two suspended sludge area is 1:1, intake outlet suspended sludge area hydraulic detention time be not less than 1 hour, the total residence time of hydrolytic tank is not less than 4 hours.
Water inlet is not less than 0.25m/s in import suspended sludge area and sparse packing area flow velocity, and in outlet suspended sludge area, supernatant liquor flow velocity >0.25m/s, sludge blanket speed <0.25m/s.
The sludge concentration of hydrolytic tank is supplemented by backflow aerobic sludge, wherein suspended sludge concentration (MLSS) controls at 8-10g/L, filler adopts plaited curtain type fibrous packing, and the sludge quantity in filler reaches 10g/L, and the total biomass density of hydrolytic tank is 10-15g/L.
Owing to forming the environment of anaerobism-oxygen of holding concurrently in hydrolytic tank different spaces region, in import suspended sludge area, aerobic area is formed after initial mud mixes with sewage, controlling dissolved oxygen (DO) is 0.1-0.3mg/L, along with water (flow) direction dissolved oxygen progressively reduces, be transitioned into formation anaerobic zone, sparse packing area, control dissolved oxygen (DO) and be less than 0.2mg/L, and in intensive packing area due to the effect of perforated pipe pneumatic blending, perforated pipe oxygen-transfer efficiency is lower than 6%, form aerobic area, control dissolved oxygen (DO) <0.5mg/L, anaerobic zone is formed along with waterpower direction dissolved oxygen progressively reduces, (DO) 0.2mg/L is less than.
Due in hydrolytic tank, different zones forms the environment that anaerobism-oxygen of holding concurrently replaces, form a large amount of double oxygen bacterium and anerobe, when hydrolytic tank enters low concentration, during hardly degraded organic substance, as COD is less than 500mg/L, during BOD/COD<0.3, by the anerobe-hydrolysis bacterium cohydrolysis effect of high density, be dissolved organic matter by insoluble hydrolysis of organic matter, the macromolecular substance of difficult for biological degradation is converted into the small-molecule substance of readily biodegradable, after general water outlet, BOD/COD ratio can improve 30-80%, 10%-30% can be reached to ammonia nitrogen removal frank.
Traditional hydrolysis process is the environment of strictly anaerobic, to be hydrolyzed reaction by single anerobe.Hydrolysis reaction bath is divided into four functional units by the present invention, import suspended sludge area, outlet suspended sludge area, two packing areas (intensive packing area, sparse packing area).In import suspended sludge area, because backflow aerobic sludge enters hydrolysising reacting system, with water inlet in this region hybrid reaction, due in water inlet with dissolved oxygen and backflow aerobic sludge in residual dissolved oxygen, in this formation aerobic area, region, the pollutent in waste water issues raw hydrolysis reaction in the effect of a large amount of concurrent oxidation and aquoiysis bacterium.Under the effect of impeller, mixed solution enters sparse packing area, form the composite system of suspended sludge microorganism, microbial film attached microbial, because the dissolved oxygen be dissolved in water oxygen biology of being held concurrently exhausts, form strict anaerobic environment in this region, the anerobe breeding a large amount of in this region is also decomposed the larger molecular organics in waste water.When mixed solution enters intensive packing area, be located at the perforated pipe air agitator bottom intensive packing area, not only stirring action is played to the mud suspended, simultaneously because perforated pipe oxygen-transfer efficiency lower (<6%) makes this region form double oxygen environment, biofilm surface forms double oxygen microbial film, inside then forms anaerobe film, therefore forms double oxygen-anaerobic hydrolysis bacterium amount reproduction in this region, thus facilitation of hydrolysis effect.And in outlet suspended sludge area, due to the stirring action of impeller, strict anaerobic zone is formed owing to lacking dissolved oxygen, anerobe mainly plays hydrolysis function, due to the few agitator in outlet relative import suspended sludge area, suspended sludge area, in this region muddy water layering, clear water flows out hydrolytic tank by overflow weir and enters follow-up Aerobic biological process, and mud forms precipitation by outside sludge drainage system part removal system.
By with cocycle, make to form four different functional areas in hydrolytic tank, progressively form according to waterpower direction the environment that double oxygen-anaerobism-oxygen of holding concurrently replaces.In different regions, respectively under the acting in conjunction of double oxygen, anaerobic hydrolysis bacterium, the pollutent decomposition efficiency in waste water is largely increased.Due to the biomembranous effect in packing area and backflow aerobic sludge, the sludge concentration significantly increased in hydrolytic tank can reach 10-15g/L, also significantly adds the efficiency of hydrolysis.
Compared with prior art, beneficial effect of the present invention is mainly reflected in:
1, pass through backflow aerobic sludge to hydrolytic tank, significantly can improve the sludge concentration (10-15g/L) of hydrolytic tank, set up packing area in hydrolytic tank simultaneously, the microbial biomass of microbial film apposition growth can be increased in a large number, effectively can improve the efficiency of hydrolytic tank.
2, in packing area, pneumatic blending is adopted, aerobic area is formed with the mud of aerobic backflow, and the formation anaerobic zone, suspended sludge area adopting agitator to stir, hocketed by double oxygen and anaerobic environment, improve the effect of concurrent oxidation and aquoiysis bacterium in hydrolytic tank, improve the hydrolytic action to lower concentration, hardly degraded organic substance.
3, achieve hydrolysis with precipitation integrated, without the need to separately building settling tank, due to hydrolysis efficiency improve, hydrolytic tank volume also can reduce, for existing technique transformation facilitate, civil engineering cost is low.
4, the hydrolysis reaction bath that oxygen and the anaerobism held concurrently replaces not only can to the hydrolysis of lower concentration, hardly degraded organic substance, because the existence of double oxygen bacterium all has good removal effect to the ammonia nitrogen in waste water, total nitrogen, total phosphorus.
5, the present invention is specially adapted to the sewage work in industrial park, cities and towns and industry centralization district.
Accompanying drawing explanation
Fig. 1 is the structural representation of the high-efficiency composite hydrolysis device that anaerobism of the present invention-oxygen of holding concurrently replaces;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the structural representation of device described in embodiment 2;
Fig. 4 is the B-B sectional view of Fig. 3.
Reference numeral 1 in figure is intensive packing area, and 2 is sparse packing areas, and 3 is import suspended sludge area, 4 is outlet suspended sludge area, and 5 is sewage inlets, and 6 is backflow aerobic sludge mouths, 7 is impellers, 8 is perforated pipe air agitators, and 9 is shore pipes, and 10 is effluent overflow weir waters, 11 is agitators, 12 is spoil disposal gates, and 13 is training walls, and 14 is hydrolytic tanks.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail: the present embodiment is implemented under premised on technical solution of the present invention, gives detailed embodiment, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1: as depicted in figs. 1 and 2, the high-efficiency composite hydrolysis device that a kind of anaerobism involved by the present embodiment-oxygen of holding concurrently replaces, comprise, sewage inlet 5, backflow aerobic sludge mouth 6, impeller 7, perforated pipe air agitator 8, shore pipe 9, effluent overflow weir water 10, agitator 11 and hydrolytic tank 14, middle part in described hydrolytic tank 14 is provided with two intensive packing areas 1 and the sparse packing area 2 of diagonal angle setting, one end in hydrolytic tank 14 is set to import suspended sludge area 3, the other end in hydrolytic tank 14 is set to outlet suspended sludge area 4, import suspended sludge area 3 and the inwall of hydrolytic tank 14 in outlet suspended sludge area 4 are respectively equipped with an impeller 7, the wall of hydrolytic tank 14 bottom of one end, import suspended sludge area 3 is connected with sewage inlet 5 and backflow aerobic sludge mouth 6, the wall on hydrolytic tank 14 top of one end, import suspended sludge area 3 is connected with agitator 11, bottom in the hydrolytic tank 14 of outlet one end, suspended sludge area 4 is provided with perforated pipe air agitator 8 and shore pipe 9, the pond of the hydrolytic tank 14 of outlet one end, suspended sludge area 4 is along being provided with effluent overflow weir water 10.
The cubic capacity of described intensive packing area 1 and sparse packing area 2 and import suspended sludge area 3 and the cubic capacity ratio exporting suspended sludge area 4 are 1: 1.
All elastic filler is installed with in described intensive packing area 1 and sparse packing area 2.
In described sparse packing area 2, filler installing space is 150mm × 150mm.
Be provided with comparatively intensive elastic filler in described intensive packing area 1, installing space is 75mm × 75mm.
Embodiment 2: as shown in Figure 3 and Figure 4, the high-efficiency composite hydrolysis device that a kind of anaerobism involved by the present embodiment-oxygen of holding concurrently replaces, comprise, sewage inlet 5, backflow aerobic sludge mouth 6, impeller 7, perforated pipe air agitator 8, effluent overflow weir water 10, agitator 11, spoil disposal gate 12, training wall 13 and hydrolytic tank 14, middle part in described hydrolytic tank 14 is provided with two intensive packing areas 1 and the sparse packing area 2 of diagonal angle setting, one end in hydrolytic tank 14 is set to import suspended sludge area 3, the other end in hydrolytic tank 14 is set to outlet suspended sludge area 4, import suspended sludge area 3 and the inwall of hydrolytic tank 14 in outlet suspended sludge area 4 are respectively equipped with an impeller 7, the wall of hydrolytic tank 14 bottom of one end, import suspended sludge area 3 is connected with sewage inlet 5 and backflow aerobic sludge mouth 6, the wall on hydrolytic tank 14 top of one end, import suspended sludge area 3 is connected with agitator 11, bottom in the hydrolytic tank 14 of outlet one end, suspended sludge area 4 is provided with perforated pipe air agitator 8, the pond of the hydrolytic tank 14 of outlet one end, suspended sludge area 4 is along being provided with effluent overflow weir water 10, the bottom of the hydrolytic tank 14 of effluent overflow weir water 10 bottom is provided with spoil disposal gate 12, a training wall 13 is respectively provided with in import suspended sludge area 3 and outlet suspended sludge area 4.
Cubic capacity and the import suspended sludge area 3 of intensive packing area 1 of the present invention and sparse packing area 2 are about 1:1 with the cubic capacity ratio exporting suspended sludge area 4, the volume of outlet suspended sludge area 4 must meet hydraulic detention time and be not less than 1h, and hydrolytic tank 14 total pond appearance is generally not less than hydraulic detention time 4h.
Sewage enters hydrolytic tank 14 by sewage inlet 5, the excess sludge that Aerobic biological process unit is discharged enters hydrolytic tank 14 by backflow aerobic sludge mouth 6, sewage mixes rapidly under the effect of impeller 7 with the aerobic sludge of backflow, oxygen environment of holding concurrently is formed in the import suspended sludge area 3 at mixing initial stage, along with the advance of current, constantly the carrying out of reaction, be progressively transitioned into anaerobic environment.Ensure there is higher sludge concentration in hydrolytic tank 14 by backflow aerobic sludge, make MLSS reach 10-15g/L..
Mixed solution is under the effect of impeller 7, the mixed solution Flow Velocity in import suspended sludge area 3 is made to be not less than 0.25m/s, flow into sparse packing area 2 and intensive packing area 1 subsequently successively, in described intensive packing area 1 and sparse packing area 2, be all installed with elastic filler.In described sparse packing area 2, filler installing space is 150mm × 150mm, because filler is more sparse, under the larger flow velocity of mixed solution (being greater than 0.25m/s) keep sludge suspension, anaerobic environment is formed in this district, in filler, the microbial film of raised growth also improves anaerobion amount, simultaneously owing to existing while microbial film and active sludge, form the anaerobe system of compound.
Subsequently, sewage flows into intensive packing area 1 through sparse packing area 2, and be provided with comparatively intensive elastic filler in described intensive packing area 1, installing space is 75mm × 75mm, and bottom the pond in this region, be laid with perforated pipe air agitator 8, oxygen-transfer efficiency is lower than 6%.More intensive biologic packing material has increased exponentially the biomass in microbial film on the one hand, and intensive filler causes larger resistance simultaneously, and mud easily deposits; And the perforated pipe air agitator 8 of bottom can prevent sludge settling, supplement a small amount of dissolved oxygen simultaneously and anaerobic environment is changed into double oxygen, make intensive packing area 1 form oxygen environment of holding concurrently, be different from sparse packing area 2 anaerobion, its facultative microbe raised growth.
Mixed solution enters outlet suspended sludge area 4, and owing to generally not establishing whipping appts in second region, the effect due to resistance is easy to realize mud-water separation, is laid with shore pipe 9 at this sections bottom, and the excess sludge of generation is by outside shore pipe discharge system.Part supernatant liquor flows out hydrolytic tank system by effluent overflow weir water 10, major part supernatant liquor and mud are under the effect of inertia flow velocity and upper half impeller, circulation enters sparse packing area 2, intensive packing area 1, import suspended sludge area 3, and import suspended sludge area 3 upper half is established agitator 11 and avoids sludge settling.
By with cocycle, make to form four different functional areas in hydrolytic tank 14, progressively form according to waterpower direction the environment that double oxygen-anaerobism-oxygen of holding concurrently replaces.
Embodiment 2 does not establish shore pipe 9, but outlet suspended sludge area 4 bottom arrange spoil disposal gate 12 be used for get rid of excess sludge, in order to realize hydraulic flow state, being provided with semicircular training wall 13, avoiding mud precipitation in import suspended sludge area 3 and outlet suspended sludge area 4.
Embodiment 3, method for hydrolysis is as follows:
The general 1:1 of volume in intensive packing area and sparse packing area and sludge suspension district, be not less than 1h at the hydraulic detention time of outlet suspension zone, the total residence time of hydrolytic tank is not less than 4h.
In import sludge suspension district and sparse packing area because the effect flow velocity of impeller is not less than 0.25m/s, and in outlet suspended sludge area, because shortage stirs, supernatant liquor is different with mud speed there is muddy water layering, the very fast >0.25m/s of supernatant liquor flow velocity, the slower <0.25m/s of sludge blanket speed.
The sludge concentration of hydrolytic tank is supplemented by backflow aerobic sludge, wherein suspended sludge concentration (MLSS) controls at 8-10g/L, filler adopts plaited curtain type fibrous packing, due to filler adheres large number of biological film, sludge quantity in filler reaches 10g/L, therefore, the biomass density that hydrolytic tank is total can reach 10-15g/L.
The concentration of backflow aerobic sludge is generally at 6-8g/L, and returned sluge ratio (sludge back flow quantity and hydrolytic tank flooding quantity volume ratio), general control is at 5-10%, and hydrolytic tank excess sludge discharge amount controls eliminating amount according to hydrolytic tank sludge concentration.
Owing to forming the environment of anaerobism-oxygen of holding concurrently in hydrolytic tank different spaces region, in import suspended sludge area, aerobic area is formed after initial mud mixes with sewage, control the general 0.1-0.3mg/L of dissolved oxygen (DO), along with water (flow) direction dissolved oxygen progressively reduces, be transitioned into formation anaerobic zone, sparse packing area, control dissolved oxygen (DO) and be generally less than 0.2mg/L, and in intensive packing area due to the effect of perforated pipe pneumatic blending, perforated pipe oxygen-transfer efficiency is generally lower than 6%, form aerobic area, control the general <0.5mg/L of dissolved oxygen (DO), anaerobic zone is formed along with waterpower direction dissolved oxygen progressively reduces, (DO) 0.2mg/L is generally less than.
Due in hydrolytic tank, different zones forms the environment that anaerobism-oxygen of holding concurrently replaces, form a large amount of double oxygen bacterium and anerobe, when hydrolytic tank enters low concentration, during hardly degraded organic substance, as COD is generally less than 500mg/L, during BOD/COD<0.3, by the anerobe-hydrolysis bacterium cohydrolysis effect of high density, be dissolved organic matter by insoluble hydrolysis of organic matter, the macromolecular substance of difficult for biological degradation is converted into the small-molecule substance of readily biodegradable, after general water outlet, BOD/COD ratio can improve 30-80%, 10%-30% can be reached to ammonia nitrogen removal frank.
The above; be only the present invention's preferably embodiment; these embodiments are all based on the different implementations under general idea of the present invention; and protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (10)
1. the high-efficiency composite hydrolysis device that an anaerobism-oxygen of holding concurrently replaces, it is characterized in that, comprise, sewage inlet (5), backflow aerobic sludge mouth (6), impeller (7), perforated pipe air agitator (8), shore pipe (9), effluent overflow weir water (10), agitator (11) and hydrolytic tank (14), middle part in described hydrolytic tank (14) is provided with two intensive packing areas (1) and sparse packing area (2) of diagonal angle setting, one end in hydrolytic tank (14) is set to import suspended sludge area (3), the other end in hydrolytic tank (14) is set to outlet suspended sludge area (4), the inwall of import suspended sludge area (3) and outlet suspended sludge area (4) interior hydrolytic tank (14) is respectively equipped with an impeller (7), the wall of hydrolytic tank (14) bottom of import suspended sludge area (3) one end is connected with sewage inlet (5) and backflow aerobic sludge mouth (6), the wall on hydrolytic tank (14) top of import suspended sludge area (3) one end is connected with agitator (11), bottom in the hydrolytic tank (14) of outlet suspended sludge area (4) one end is provided with perforated pipe air agitator (8) and shore pipe (9), the pond of the hydrolytic tank (14) of outlet suspended sludge area (4) one end is along being provided with effluent overflow weir water (10).
2. the high-efficiency composite hydrolysis device that anaerobism according to claim 1-oxygen of holding concurrently replaces, it is characterized in that, the cubic capacity of described intensive packing area (1) and sparse packing area (2) and import suspended sludge area (3) and the cubic capacity ratio exporting suspended sludge area (4) are 1:1.
3. the high-efficiency composite hydrolysis device that anaerobism according to claim 2-oxygen of holding concurrently replaces, is characterized in that, be all installed with elastic filler in described intensive packing area (1) and sparse packing area (2).
4. the high-efficiency composite hydrolysis device that anaerobism according to claim 3-oxygen of holding concurrently replaces, it is characterized in that, in described sparse packing area (2), filler installing space is 150mm × 150mm.
5. the high-efficiency composite hydrolysis device that anaerobism according to claim 4-oxygen of holding concurrently replaces, it is characterized in that, be provided with comparatively intensive elastic filler in described intensive packing area (1), installing space is 75mm × 75mm.
6. the high-efficiency composite hydrolysis device that an anaerobism-oxygen of holding concurrently replaces, it is characterized in that, comprise, sewage inlet (5), backflow aerobic sludge mouth (6), impeller (7), perforated pipe air agitator (8), effluent overflow weir water (10), agitator (11), spoil disposal gate (12), training wall (13) and hydrolytic tank (14), middle part in described hydrolytic tank (14) is provided with two intensive packing areas (1) and sparse packing area (2) of diagonal angle setting, one end in hydrolytic tank (14) is set to import suspended sludge area (3), the other end in hydrolytic tank (14) is set to outlet suspended sludge area (4), the inwall of import suspended sludge area (3) and outlet suspended sludge area (4) interior hydrolytic tank (14) is respectively equipped with an impeller (7), the wall of hydrolytic tank (14) bottom of import suspended sludge area (3) one end is connected with sewage inlet (5) and backflow aerobic sludge mouth (6), the wall on hydrolytic tank (14) top of import suspended sludge area (3) one end is connected with agitator (11), bottom in the hydrolytic tank (14) of outlet suspended sludge area (4) one end is provided with perforated pipe air agitator (8), the pond of the hydrolytic tank (14) of outlet suspended sludge area (4) one end is along being provided with effluent overflow weir water (10), the bottom of the hydrolytic tank (14) of effluent overflow weir water (10) bottom is provided with spoil disposal gate (12), a training wall (13) is respectively provided with in import suspended sludge area (3) and outlet suspended sludge area (4).
7. the high-efficiency composite hydrolysis device that anaerobism according to claim 6-oxygen of holding concurrently replaces, it is characterized in that, the cubic capacity of described intensive packing area (1) and sparse packing area (2) and import suspended sludge area (3) and the cubic capacity ratio exporting suspended sludge area (4) are 1:1.
8. the high-efficiency composite hydrolysis device that anaerobism according to claim 7-oxygen of holding concurrently replaces, is characterized in that, be all installed with elastic filler in described intensive packing area (1) and sparse packing area (2).
9. the high-efficiency composite hydrolysis device that anaerobism according to claim 8-oxygen of holding concurrently replaces, it is characterized in that, in described sparse packing area (2), filler installing space is 150mm × 150mm.
10. a method for hydrolysis for the high-efficiency composite hydrolysis device using the anaerobism described in claim 1 or 6-oxygen of holding concurrently to replace, is characterized in that,
The volumetric ratio of intensive packing area and sparse packing area and two suspended sludge area is 1:1, intake outlet suspended sludge area hydraulic detention time be not less than 1 hour, the total residence time of hydrolytic tank is not less than 4 hours;
Water inlet is not less than 0.25m/s in import suspended sludge area and sparse packing area flow velocity, and in outlet suspended sludge area, supernatant liquor flow velocity >0.25m/s, sludge blanket speed <0.25m/s;
Supplement the sludge concentration of hydrolytic tank by backflow aerobic sludge, wherein suspended sludge concentration controls at 8-10g/L, and filler adopts plaited curtain type fibrous packing, and the sludge quantity in filler reaches 10g/L, and the total biomass density of hydrolytic tank is 10-15g/L;
Owing to forming the environment of anaerobism-oxygen of holding concurrently in hydrolytic tank different spaces region, in import suspended sludge area, aerobic area is formed after initial mud mixes with sewage, control dissolved oxygen is 0.1-0.3mg/L, along with water (flow) direction dissolved oxygen progressively reduces, be transitioned into formation anaerobic zone, sparse packing area, control dissolved oxygen and be less than 0.2mg/L, and in intensive packing area due to the effect of perforated pipe pneumatic blending, perforated pipe oxygen-transfer efficiency is lower than 6%, form aerobic area, control dissolved oxygen <0.5mg/L, anaerobic zone is formed along with waterpower direction dissolved oxygen progressively reduces, control dissolved oxygen and be less than 0.2mg/L.
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| JPH04244297A (en) * | 1991-01-29 | 1992-09-01 | Kubota Corp | Treatment of sewage |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1422817A (en) * | 2002-10-31 | 2003-06-11 | 大连理工大学 | Anaerobic-facultative-aerobic integrated sewage treatment method and reuse apparatus |
| CN102285739A (en) * | 2010-06-17 | 2011-12-21 | 中国环境科学研究院 | BCMB (Buffering Circulating MediaBiological Bed) treatment method for high-concentration toxic organic waste water |
| CN203513361U (en) * | 2013-10-24 | 2014-04-02 | 宜兴市建邦环境投资有限责任公司 | Anaerobic-facultative alternative high-efficiency complex hydrolysis device |
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