CN202465461U - Symmetrical type opposite and three-dimensional circulating flow integrated oxidation ditch - Google Patents
Symmetrical type opposite and three-dimensional circulating flow integrated oxidation ditch Download PDFInfo
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- CN202465461U CN202465461U CN2012200692901U CN201220069290U CN202465461U CN 202465461 U CN202465461 U CN 202465461U CN 2012200692901 U CN2012200692901 U CN 2012200692901U CN 201220069290 U CN201220069290 U CN 201220069290U CN 202465461 U CN202465461 U CN 202465461U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The utility model relates to a symmetrical type opposite and three-dimensional circulating flow integrated oxidation ditch, which comprises air lift plug-flow three-dimensional circulating type oxidation ditches, wherein each ditch body is provided with a horizontal clapboard, and an aerobic zone and an anoxic zone are respectively arranged an upper-layer channel and a lower-layer channel; one end of each horizontal clapboard connected with the other end of an inclined flow guide wall, is a transition anoxic zone, and an air lift aerobic zone is arranged between the inclined flow guide wall and a channel body end wall and is provided with a micro-pore aerator set; and the symmetrical type opposite and three-dimensional circulating flow integrated oxidation ditch is characterized in that the symmetrical type opposite and three-dimensional circulating flow integrated oxidation ditch is a rectangular integrated oxidation ditch which consists of one air lift plug-flow three-dimensional circulating type oxidation ditch and the other air lift plug-flow three-dimensional circulating type oxidation ditch, which have the same structure, are communicated with each other by a transition anoxic zone, are opposite to each other, and are symmetrical with each other, the two horizontal clapboards are provided with double-shaft steering devices which are lower than the horizontal clapboards, two sides of each double-shaft steering device are connected with horizontal rotating shafts along the transverse direction of the ditch, a flow guide pulp board is arranged on each horizontal rotating shaft, and the top of each double-shaft steering device is connected with a vertical rotating shaft driven by the speed reducing motor. The oxidation ditch has the advantages of being higher in denitriding effect, free from mud at the bottom of the ditch, stable in water quality and low in cost.
Description
Technical field
The utility model relates to a kind of dirt, waste water disposal facility, relates in particular to the three-dimensional in opposite directions cycling stream integrated oxidation ditch of a kind of symmetrical expression.
Background technology
Oxidation ditch is the extended aeration activated sludge process water technology with mixing fully and whole plug-flow hydromechanics characteristic, and dirt, waste water and active sludge mix in sealing ditch shape passage and circulate.Because the hydraulic characteristic of " closed circulation flows " that it is unique and the characteristics of longer mud age and low organic loading; It is good to make it become effluent quality; Strong shock resistance; Stable, mud discharge capacity low and one-time construction investment and the lower water technology of working cost are widely used in municipal effluent and Industrial Wastewater Treatment.Last century the nineties; Cooperating the micro-hole aerator technology with impeller under water is that the deep channel type oxidation channel of representative rises rapidly; It has been inherited the characteristics of conventional oxidation ditch and when improving oxygen-transfer efficiency, has solved the oxidation ditch bottom of trench more effectively and be prone to heavy mud and take up an area of big problem.In recent years; Build the whole Round Sump oxidation ditch in same structures jointly with functional pools such as solid-liquid separator, anaerobic pond, anoxic pond and oxidation ditch tap drain, also claim integrated oxidation ditch, be widely used; It tackles complicated influent quality with multiple ditch type and various functional pool different combinations mode; When removing the carbon source pollutent, effectively promoted dephosphorization and denitrification effect, more since whole Round Sump oxidation ditch at the cancellation second pond, effectively reduce take up an area of in; Realized that mixed solution does not have blowback stream function, therefore also embodied energy-conservation effect.At present, be that the oxidation ditch of new generation of characteristic has been walked out the laboratory and come out one after another with three-dimensional cycling stream.It is being inherited on earlier generations oxidation ditch, the especially basis of integrated oxidation ditch plurality of advantages, and the contribution aspect lifting denitrification effect and minimizing occupation of land is more outstanding.The three-dimensional cycling stream integrated oxidation ditch of gas lift plug-flow in the three-dimensional cycling stream oxidation ditch family is more single, energy-conservation at equipment to have outstanding performance, extremely industry concern with operation aspect simple.
The patent ZL200810053029.0 that has reported " Zanjon type gas-lift stream-pull tridimensional circulation type inversion A
2The O integral co-construction oxidation ditch " be intended to the gas lift impellent of utilizing aeration process to produce; when realizing the integral body of mixed solution in the oxidation ditch raceway groove promoted; make the three-dimensional circulation of mixed solution and realize aerobic and anoxic subregion through horizontal baffle is set, reach improve nitrogen removal rate, energy-conservation, reduce the equipment installed capacity and further reduce the purpose that oxidation ditch takes up an area of.The patent ZL201010150135.8 of follow-up report " the funneling solid-liquid separator of bar shaped and use the gas lifting pulsation push flowing tridimensional circulating oxidation ditch of this solid-liquid separator " is on above-mentioned patent basis, has done further improvement.Its structure is in oxidation ditch ditch body, to be provided with gas lift aerobic zone, aerobic zone, solid-liquid displacement zone, transition oxygen-starved area, oxygen-starved area; Be provided with the horizontal baffle that the ditch body is divided into upper and lower two-layer raceway groove in the middle and lower part of ditch body; Aerobic zone is located at top-layer channel, and lower floor's raceway groove is located in the oxygen-starved area; It is the inclination training wall of vertical headwall that horizontal baffle one end connects to its outside oblique upper extension and top, and the gas lift aerobic zone is located between inclination training wall and the ditch body headwall, on the ditch body of gas lift aerobic zone bottom, the micro-hole aerator group is set; At the horizontal baffle the other end is the transition oxygen-starved area, and solid-liquid displacement zone is located between the aerobic zone and transition oxygen-starved area of top-layer channel.Solid-liquid displacement zone has adopted the funneling solid-liquid separator of bar shaped, and on solid-liquid separator, is provided with chute, in order to strengthen the hydraulic disturbance on top layer, transition oxygen-starved area, improves water inlet and mixed solution mixed effect.The micro-hole aerator group has been set up intermittent gas supply aerator group on the basis of adopting conventional continuous air feed aerator group, to prevent that active sludge from sinking and to promote that denitrification process fully carries out.This gas lifting pulsation push flowing tridimensional circulating oxidation ditch is at simplified construction, and is energy-conservation, improves the effluent quality aspect and obtained positively effect.
Current; Oxidation Ditch Technology is still towards with abundant excavation with utilize conventional oxidation ditch hydraulic characteristic; With further minimizing occupation of land and construction fund; Energy-conservation, further promote the water treatment effect, especially the denitrogenation dephosphorizing effect is that the direction that new ditch type, energy-efficient equipment and the simple operation mode of target studied develops with reducing running cost.Make a general survey of existing gas lift plug-flow tridimensional circulation type oxidation ditch and still have certain technological deficiency: be mainly reflected in: (1) is not deposited mud because of keeping higher circulation velocity really to make bottom of trench, thereby causes the short denitrification effect that has influence on of denitrification process; (2) be proportional relation because of aerator diving depth and energy consumption, therefore limited height, the length ratio of the three-dimensional cycling stream oxidation ditch of gas lift push flowing, single ditch scale of construction is difficult to amplify, cause thus handle the water yield must many ditches when big and build, improved civil engineering costs; (3) adopt intermittent gas supply micro-hole aerator group, make micro-pore aeration equipment fragile, improve equipment cost; (4) solid-liquid separator that adopts because of in established chute and take space in the device, reduce desilting area, influence separating effect, the while makes the increase of construction and installation cost because of the structure relative complex.
The utility model content
The main purpose of the utility model is to the problems referred to above; Provide a kind of and on the basis of existing gas lift plug-flow tridimensional circulation type oxidation ditch, carry out the improvement on the body structure of pond, provide that a kind of denitrification effect is better, do not deposit that more easy, the single ditch scale of construction of mud, stable effluent quality, operation is big, construction cost is low, the three-dimensional in opposite directions cycling stream integrated oxidation ditch of symmetrical expression of suitable sizable application demand at the bottom of the pond.
The utility model solves the technical scheme that its technical problem adopted:
The three-dimensional in opposite directions cycling stream integrated oxidation ditch of a kind of symmetrical expression; Comprise gas lift plug-flow tridimensional circulation type oxidation ditch; In its ditch body, be provided with gas lift aerobic zone, aerobic zone, solid-liquid displacement zone, transition oxygen-starved area, oxygen-starved area; Be provided with the horizontal baffle that the ditch body is divided into upper and lower two-layer raceway groove in the middle and lower part of ditch body, said aerobic zone is located at top-layer channel, and lower floor's raceway groove is located in said oxygen-starved area; It is the inclination training wall of vertical headwall that horizontal baffle one end connects to its outside oblique upper extension and top, and said gas lift aerobic zone is located between inclination training wall and the ditch body headwall, on the ditch body of gas lift aerobic zone bottom, the micro-hole aerator group is set; At the horizontal baffle the other end is the transition oxygen-starved area; Solid-liquid displacement zone is located between the aerobic zone and transition oxygen-starved area of top-layer channel; The ditch body is provided with water inlet pipe, rising pipe and shore pipe, it is characterized in that the three-dimensional in opposite directions cycling stream integrated oxidation ditch of said symmetrical expression is to be communicated with rectangle integrated oxidation ditch that in opposite directions symmetrically arranged another gas lift plug-flow tridimensional circulation type oxidation ditch constitute with identical with its structure through both walls butt joint, transition oxygen-starved area by a said gas lift plug-flow tridimensional circulation type oxidation ditch; Between the central authorities of said rectangle integrated oxidation ditch, two symmetrical horizontal baffles and the position that is lower than two horizontal baffles the twin shaft reverser is set; An end that connects a horizontal rotating shaft along the horizontal said twin shaft reverser both sides of rectangle integrated oxidation ditch respectively; On the said horizontal rotating shaft fixedly the suit cross section be the bar shaped water conservancy diversion pulpboard that ∫ shape, centre are provided with axis hole; The other end of horizontal rotating shaft is supported on the rectangle integrated oxidation ditch side wall; The input aperture at twin shaft reverser top is fixedly connected the vertical rotating shaft that is driven by reducing motor, and reducing motor is fixedly mounted on rectangle integrated oxidation ditch top.
The solid-liquid separator that said solid-liquid displacement zone adopts is the funneling solid-liquid separator of bar shaped; The two vertical headwalls that comprise the settling section of crowding around solid-liquid displacement zone, disengaging zone and the settling region that are vertically connected between said rectangle integrated oxidation ditch both walls; Be positioned at settling section and receive mill weir with vertical headwall plurality of parallel connected vertically and be located at the heavy mud replacement assembly of settling region; Said vertical headwall comprises influent side headwall and water outlet side headwall; Be provided with the bar shaped water leg that is vertically connected between rectangle integrated oxidation ditch both walls in water outlet side headwall outer upper; Said plurality of parallel is received mill weir and is located between influent side headwall and the water outlet side headwall, and is communicated with water leg through the corresponding receipts mill weir water outlet that is provided with on the water outlet side headwall; Said heavy mud replacement assembly is set between the influent side headwall of corresponding settling region and water outlet side headwall, and this assembly is the bar shaped funnel group that the bar shaped funnel vertical fixing by a plurality of connections arranged side by side forms between influent side headwall and water outlet side headwall.
The vertical training wall section that a plurality of and said rectangle integrated oxidation ditch both walls and horizontal baffle are fixedly connected is set in said horizontal baffle bottom.
The beneficial effect of the utility model is: the three-dimensional in opposite directions cycling stream integrated oxidation ditch of the symmetrical expression that (1) provides comprises two symmetrically arranged in opposite directions gas lift plug-flow tridimensional circulation type oxidation ditches; And the water conservancy diversion pulpboard is set; Periodically control the flow direction through the water conservancy diversion pulpboard from the converging of two symmetrical oxygen-starved areas, bump, sinking mixed solution; Realize the distribution of mixed solution flow, make two symmetrical horizontal baffle bottoms, can effectively solve the heavy mud problem of ditch bottom respectively periodically through the impingement flow of big flow velocity; And adjustment mixed solution hydraulic detention time, the optimum reacting time of realization oxygen-starved area denitrification process promotes denitrification effect; (2) stir naturally through what two-way mixed solution cycling stream confluxed in opposite directions and produces; Under the prerequisite that power is not provided, promoted the complete mixing functions of oxidation ditch; Make the ability of its anti-shock loading stronger; Can make solid-liquid separator save chute, when simplifying the solid-liquid separator structure, promote the effect of its solid-liquid separation, and cost be cheaper; The setting of (3) two symmetric gas lift aerobic zones, aerobic zone, oxygen-starved area; Make the length of gas lift plug-flow tridimensional circulation type oxidation ditch be able to extend, efficiently solve thus single ditch scale of construction that the restriction because of the type oxidation ditch length aspect ratio causes little, handle the problem that the water yield is low and civil engineering costs is higher; (4) compared with prior art, saved intermittent gas supply micro-hole aerator group, save energy prolongs the life-span that micro-pore aeration equipment uses; (5) adopt two symmetrically arranged in opposite directions gas lift plug-flow tridimensional circulation type oxidation ditches, and the water conservancy diversion pulpboard is set, actual is to form two strands of symmetrical in opposite directions three-dimensional cycling streams of oxidation ditch and make up long waterpower path and passage.The circulating fluidized useful contribution that brings is to the oxidation ditch ideal in the foundation of the three-dimensional cycling stream of symmetry: flow is still periodically mobile respectively along aerobic, solid-liquid separation, anoxic zones mixing; When bringing into play inherent function; Form again that two bursts of main flows are converged at the ditch meta, clashed into, the situation of shunting again, between the former water, mixed solution that in fact plays mixed solution and entering and the mixed solution more sufficient stirring with mix, this stirring mixes with the cycling stream of mixed phase than single-pathway; Disperse, the polymeric effect is more outstanding; This makes the impact resistance of oxidation ditch strengthen, and treat effluent is littler to former water slug effects of load, and effluent characteristics is more stable.The foundation of the three-dimensional cycling stream of symmetry is to oxidation ditch " mixed type fully " and the lifting of " whole push flowing " hydromechanics advantage in " mixing fully " function aspects; And this lifting is not a cost to increase power-equipment and energy, has higher economical and practical value.Simultaneously, the oxygen-starved area flow velocity that reallocation realized of percussion flow and the adjustment of the periodicity of hydraulic detention time, integral body has promoted the denitrification effect of oxidation ditch when effectively solving the heavy mud problem of bottom of trench.
Description of drawings
Fig. 1 is the plan structure synoptic diagram of the utility model;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the water conservancy diversion pulpboard of the utility model and the structural representation of twin shaft reverser part;
Fig. 4 is the structural representation of the funneling solid-liquid separator of bar shaped of the utility model.
Among the figure: the three-dimensional in opposite directions cycling stream integrated oxidation ditch of 1 symmetrical expression, 1A, 1B gas lift plug-flow tridimensional circulation type oxidation ditch, 11,11 ' transition oxygen-starved area, 12,12 ' solid-liquid displacement zone, 13,13 ' aerobic zone; 14,14 ' gas lift aerobic zone, 15,15 ' ditch body headwall, 16,16 ' oxygen-starved area, 17 rectangle integrated oxidation ditch side walls, 17A, 17B gas lift plug-flow tridimensional circulation type oxidation ditch ditch side wall; 2, the solid-liquid separator of the three-dimensional in opposite directions cycling stream integrated oxidation ditch of 2 ' symmetrical expression, 21,21 ' solid-liquid separator influent side headwall, 22,22 ' solid-liquid separator water outlet side headwall, 221 receive the mill weir water outlets, and 23,23 ' water leg; 24,24 ' bar shaped funnel group, 25 bar shaped funnels, 26 stripe board, 27,27 ' receive mill weir, 28,28 ' settling section; 29,29 ' disengaging zone, 30,30 ' settling region, 3,3 ' inclination training wall, 4,4 ' micro-hole aerator group; 5,5 ' horizontal baffle, 51,51 ' vertically training wall sections, 6 reducing motors, 61 frame plates; 71 vertical rotating shafts, 72,73 horizontal rotating shafts, 74 pedestals, 8 twin shaft reversers; 81 water inlet pipes, 82,82 ' rising pipe, 83,83 ' shore pipe, 9 water conservancy diversion pulpboards.
Below in conjunction with accompanying drawing and embodiment the utility model is specified.
Embodiment
Fig. 1～Fig. 4 illustrates three-dimensional in opposite directions cycling stream integrated oxidation ditch of a kind of symmetrical expression and local structure thereof; Comprise gas lift plug-flow tridimensional circulation type oxidation ditch 1A; In its ditch body, be provided with gas lift aerobic zone 14, aerobic zone 13, solid-liquid displacement zone 12, transition oxygen-starved area 11, oxygen-starved area 16; Be provided with the horizontal baffle 5 that the ditch body is divided into upper and lower two-layer raceway groove in the middle and lower part of ditch body, above-mentioned aerobic zone 13 is located at top-layer channel, and lower floor's raceway groove is located in above-mentioned oxygen-starved area 16; It is the inclination training wall 3 of vertical headwall that one end of horizontal baffle 5 connects to its outside oblique upper extension and top; Above-mentioned gas lift aerobic zone 14 is located between inclination training wall 3 and the ditch body headwall 15; On gas lift aerobic zone 14 bottom ditch bodies, micro-hole aerator group 4 is set, the micro-hole aerator group adopts continuous air feed micro-hole aerator group; At the horizontal baffle the other end transition oxygen-starved area 11 is set, solid-liquid displacement zone 12 is located between the aerobic zone 13 and transition oxygen-starved area 11 of top-layer channel, and ditch body 1A is provided with water inlet pipe, rising pipe and shore pipe.
The utility model is characterised in that the three-dimensional in opposite directions cycling stream integrated oxidation ditch 1 of above-mentioned symmetrical expression is with identical with its structure and be communicated with the rectangle integrated oxidation ditch that symmetrically arranged in opposite directions another gas lift plug-flow tridimensional circulation type oxidation ditch 1B constitutes through the butt joint of two ditch side walls, transition oxygen-starved area by above-mentioned gas lift plug-flow tridimensional circulation type oxidation ditch 1A.Like Fig. 1, shown in Figure 2, gas lift plug-flow tridimensional circulation type oxidation ditch 1B and gas lift plug-flow tridimensional circulation type oxidation ditch 1A flow be arranged with in opposite directions transition oxygen-starved area 11 ', solid-liquid displacement zone 12 '; Aerobic zone 13 ', gas lift aerobic zone 14 ', ditch body headwall 15 '; Oxygen-starved area 16 ', ditch side wall 17B, inclination training wall 3 '; Micro-hole aerator group 4 ', horizontal baffle 5 '.Two ditch side wall 17A, 17B butt joint constitute the side wall 17 of the rectangle integrated oxidation ditch of the utility model; And ditch body headwall 15,15 ' also is the headwall of rectangle integrated oxidation ditch, and two transition oxygen-starved areas 11,11 ' connection form the two-way mixed solution cycling stream zone of confluxing in opposite directions.
The central authorities of above-mentioned rectangle integrated oxidation ditch, two symmetrical horizontal baffles 5,5 ' between and the position that is lower than two horizontal baffles twin shaft reverser 8 is set; Along the rectangle integrated oxidation ditch laterally; The both sides of above-mentioned twin shaft reverser 8 connect an end of horizontal rotating shaft 72,73 respectively; On the above-mentioned horizontal rotating shaft 72,73 respectively fixedly the suit cross section be the bar shaped water conservancy diversion pulpboard 9 that ∫ shape, centre are provided with axis hole, the other end of horizontal rotating shaft 72,73 is supported on respectively on the both walls 17 of rectangle integrated oxidation ditch through pedestal 74.The input aperture at the top of twin shaft reverser 8 is fixedly connected the vertical rotating shaft 71 that is driven by reducing motor 6, and reducing motor 6 is fixedly mounted on rectangle integrated oxidation ditch top through the frame plate 61 that is arranged at rectangle integrated oxidation ditch top.In this example, two gas lift plug-flow tridimensional circulation type oxidation ditch 1A, the shared water inlet pipe of 1B, promptly water inlet pipe 81 is arranged on the bottom central position of rectangle integrated oxidation ditch 1.The aerobic zone 13,13 of rectangle integrated oxidation ditch ' in, respectively horizontal baffle 5,5 separately ' with the corner of inclination training wall 3,3 ' be connected be provided with shore pipe 83,83 '.
Like Fig. 1, Fig. 2, shown in Figure 4; The solid-liquid separator that above-mentioned solid-liquid displacement zone 12 adopts is the funneling solid-liquid separator 2 of bar shaped; The two vertical headwalls that comprise the settling section of crowding around solid-liquid displacement zone 28, disengaging zone 29 and the settling region 30 that are vertically connected between above-mentioned rectangle integrated oxidation ditch both walls; Be positioned at settling section and receive mill weir 27 with vertical headwall plurality of parallel connected vertically and be located at the heavy mud replacement assembly of settling region; Vertically headwall comprises influent side headwall 21 and water outlet side headwall 22; Be provided with the bar shaped water leg 23 that is vertically connected between rectangle integrated oxidation ditch both walls in water outlet side headwall outer upper, above-mentioned plurality of parallel is received mill weir 27 and is located between influent side headwall 21 and the water outlet side headwall 22, and is communicated with water leg 23 through the corresponding receipts mill weir water outlet 221 that is provided with on the water outlet side headwall 22; Heavy mud replacement assembly is set between the influent side headwall of corresponding settling region and water outlet side headwall, and this assembly is the bar shaped funnel group that bar shaped funnel 25 vertical fixing by a plurality of connections arranged side by side form between influent side headwall and water outlet side headwall.The funneling solid-liquid separator 2 of the bar shaped that the utility model adopts was to have saved chute with the difference of the funneling solid-liquid separator of bar shaped of the prior art, made designs simplification, and taking up room in the device reduces, and has increased desilting area and has improved separating effect.Like Fig. 1, shown in Figure 2, gas lift plug-flow tridimensional circulation type oxidation ditch 1B is provided with identical with funneling solid-liquid separator 2 structures of bar shaped and the funneling solid-liquid separator 2 of symmetrically arranged bar shaped '.The funneling solid-liquid separator 2,2 of bar shaped ' water leg 23,23 ' respectively connect rising pipe 82,82 '.
A plurality of vertical training wall sections 51 that are fixedly connected with rectangle integrated oxidation ditch both walls 17 and horizontal baffle 5 are set in the bottom of above-mentioned horizontal baffle 5.With horizontal baffle 5 symmetries, horizontal baffle 5 ' the bottom be provided with equally a plurality of vertical training wall sections 51 '.
The working process and the principle of the symmetrical in opposite directions three-dimensional cycling stream integrated oxidation ditch that the utility model provides are following:
Fig. 1～Fig. 4 shows the structure of the three-dimensional in opposite directions cycling stream integrated oxidation ditch 1 of symmetrical expression; As shown in the figure; Wherein among two gas lift plug-flow tridimensional circulation type oxidation ditch 1A, the 1B respectively symmetry be provided with 5 functional areas in opposite directions: gas lift aerobic zone 14,14 ', aerobic zone 13,13 ', solid-liquid displacement zone 12,12 ', transition oxygen-starved area 11,11 ' and oxygen- starved area 16,16 '.During work; Former water from water inlet pipe 81 get into two be communicated with the transition oxygen-starved area 11,11 that merges '; With from the aerobic zone 14,14 of top-layer channel ' two flow in opposite directions, mixed solutions that head-on collision falls mix the new mixed solution of formation; New mixed solution get into respectively lower floor oxygen-starved area 16,16 ' in, the diffusion and by mikrobe absorption rapidly of the organism in the new mixed solution can effectively reduce this regional dissolved oxygen oxygen dissolving value is dropped to below the 0.5mg/L; Can also be for anti-nitration reaction provide carbon source, thus remove the ammonia nitrogen in the middle of the dirty waste water better.Then, mixed solution continue to flow get into respectively gas lift aerobic zone 14,14 ', this zone be provided with the micro-hole aerator group 4,4 of continuous air feed ', for system provides oxygen and circulation power.In the present embodiment, the air demand of micro-hole aerator group is 1.2m
3/ min; Under the brute force of gas lift current stirs; The flow of entering gas lift aerobic zone bubble quick and that the micro-hole aerator group is provided contacts and disperses; Follow gas lift when promoting mixed solution flow point in stream and the ditch not along the vertical end top water-level of the inclination training wall 3,3 of gas lift aerobic zone one side ' rise to inclination training wall kinetic energy be converted into gravitional force fully; Jump over inclination training wall top descend rapidly the aerobic zone 13,13 that gets into the upper strata respectively ', it is main in the one's respective area that to remove with COD, BOD be that the carbon source of sign is contaminants associated carries out nitrated simultaneously and gather phosphorus reaction.After accomplishing hydraulic retention and aerobic biochemical reaction under the aerobic zone action of turbulent flow; The partially mixed liquid of two aerobic zones get into respectively be positioned at solid-liquid displacement zone 12,12 ' the funneling solid-liquid separator 2,2 of bar shaped ', mixed solution is got in the bar shaped funnel by bar shaped funnel bottom opening, raising speed is slowed down; Form heavy mud; The heavy mud that has got into before having replaced under stream effect forward, gets in the ditch body mixed solution then; Then, follow-up mixed solution get into again bar shaped funnel 2,2 ' in, go round and begin again; Heavy mud is alternately changed, after solid-liquid displacement zone realizes mud-water separation, clear water respectively through receive mill weir 27,27 ' enrichment to water leg 23,23 ' in the middle of; Then, through water shoot 82,82 ' outflow system.Aerobic zone 13,13 ' most of mixed solution respectively Yan Zhugoudao get into lower floor oxygen-starved area 16,16 ' in, mixed solution mixes with the former water that newly advances once more, the circulation that realization goes round and begins again.
Be provided with water conservancy diversion paddle board 9 in the utility model, it mainly acts on is to carrying out assignment of traffic from the head-on collision of two relative top-layer channel aerobic zones 14,14 ' warp, the mixed solution that falls in the lower floor oxygen-starved area.Two transition oxygen-starved areas 11,11 that are communicated with ' the become two-way mixed solution cycling stream zone of confluxing in opposite directions; As shown in Figure 2; When water conservancy diversion paddle board 9 rotates to the upper edge to the position of horizontal baffle 5 tilt; The mixed solution main flow is imported in horizontal baffle 5 ' lateral sulcus body; This side oxygen-starved area 16 ' inner fluid speed is increased suddenly drive that sedimentary active sludge flows in the zone, meanwhile oxygen-starved area 16 inner fluid speeds of horizontal baffle 5 sides reduce and make mixed solution have enough residence time to make biology have time enough to carry out the work of denitrogenation in this zone, cause this zone to produce sludgd deposition simultaneously; When water conservancy diversion paddle board 9 rotates to the upper edge to the position of horizontal baffle 5 ' tilt; The mixed solution main flow is imported in the horizontal baffle 5 lateral sulcus bodies; Make flow velocity rising in this side oxygen-starved area 16; Thereby take away sedimentary mud, and make oxygen-starved area 16 ' inner fluid speed reduction of horizontal baffle 5 ' side make mixed solution have enough residence time to make biology have time enough to carry out the work of denitrification denitrogenation in this zone.This WWT operation that utilizes water conservancy diversion paddle board 9 to distribute flow in the tridimensional circulating oxidation ditch has not only solved the not good problem of the interior denitrification effect of existing ditch body but also has solved the problem of sludgd deposition; The rotating speed of water conservancy diversion paddle board is set according to different operating modes, and the time in one week of water conservancy diversion paddle board rotation is 5 hours in this example.In addition; Two bursts of processes that the mixed solution main flow is converged, clashed into, shunts; In fact between the former water, mixed solution that plays mixed solution and entering and the mixed solution more sufficient stirring with mix; This makes the impact resistance of oxidation ditch strengthen, and treat effluent is littler to former water slug effects of load, and effluent characteristics is more stable.Simultaneously, in the utility model, mixed solution is realized fully stirring with blended circulating situation; Compared with prior art; The utility model has saved intermittent gas supply micro-hole aerator group, only uses one group of continuous air feed micro-hole aerator group, simplifies the operation; Save energy prolongs the life-span that micro-pore aeration equipment uses.
The corner of horizontal baffle 5,5 ' respectively and inclination training wall 3,3 ' be connected be provided with shore pipe 83,83 ', regular outside spoil disposal, thereby control sludge age and reduce the content of phosphorus in the waste water.
Summarize above-mentioned working process, the principle of work of the utility model is: in the rectangle integrated oxidation ditch, form two symmetries, the lower floor oxygen-starved area, upper strata aerobic zone, solid-liquid displacement zone and the gas lift aeration zone that are provided with in opposite directions and the transition oxygen-starved area that is connected as a single entity.Two groups of identical continuous air feed micro-hole aerator groups of aeration rate are arranged on the ditch bottom of the gas lift aeration zone at oxidation ditch two ends respectively and carry out aeration, form this moment by the ditch two ends respectively the gas lift plug-flow, to the ditch intermediate phase to the three-dimensional cycling stream fluidised form of molten gas mixed solution that conflux, symmetric; In the middle of oxidation ditch; Owing to be provided with water conservancy diversion pulpboard by the horizontal set of reducing motor control; Under the acting in conjunction of mixed solution cycling stream that confluxes in opposite directions and water conservancy diversion pulpboard, periodically rotate water conservancy diversion, the flow that distributes the mixed solution that confluxes to pass through respectively thus two oxygen-starved areas by the time of reducing motor control; Make periodically corresponding respectively flow and the mixed solution cycling stream of flow velocity through from high to low in its two oxygen-starved areas of causing oxidation ditch; Promptly when a side was maximum flow and flow velocity, opposite side then was minimum flow and flow velocity, goes round and begins again.Thereby realize adjusting its hydraulic detention time,, promote denitrification effect to reach the optimum reacting time of denitrification process in the oxygen-starved area through the flow of periodically controlling each oxygen-starved area mixed solution; Two horizontal baffle bottoms can effectively solve the heavy mud problem of oxidation ditch bottom respectively periodically through the impingement flow of big flow velocity; Naturally stir through what two-way mixed solution cycling stream confluxed in opposite directions and produces, under the prerequisite that power is not provided, promoted the complete mixing functions of oxidation ditch, make the ability of its anti-shock loading stronger.In the two-way mixed solution cycling stream zone of confluxing in opposite directions; The bump of stream will produce to emerge in large numbers and resemble in opposite directions; This makes solid-liquid separator back segment water body can not form upper strata muddy water layering; Therefore can save that the funneling solid-liquid separator internal cause of original bar shaped stirs that the back segment water body needs and the surface water that is provided with is crossed chute, make that the solid-liquid separator structure is more succinct, separating effect is better, cost is cheaper.Symmetry, the setting of two gas lift aeration zones, oxygen-starved area and aerobic zones of setting in opposite directions; Make the length of three-dimensional cycling stream oxidation ditch be able to extend, efficiently solve thus restriction because of the type oxidation ditch length, aspect ratio cause single ditch scale of construction little, handle the problem that the water yield is low and civil engineering costs is higher.
The effect of the utility model
Above-mentioned former water meets the following conditions:
BOD
5: COD>=1: 3; The residence time>=12 of former water in the three-dimensional cycling stream integrated oxidation ditch of symmetry hour; Water inlet COD 250-600mg/L; Ammonia nitrogen 25-50mg/L; Total nitrogen 30-50mg/L; Total phosphorus 2-5mg/L.
The WWT result is: COD 30-48mg/L, and clearance is greater than 90% (adopting " the mensuration dichromate titration of GB11914-89COD " to measure); Ammonia nitrogen 3.5-5mg/L, clearance is greater than 90% (adopting GB7479-87 " the mensuration nessler reagent colourimetry of water quality ammonium " to measure); Total nitrogen 6-10mg/L; Total clearance is greater than 85% (adopting " the mensuration alkalescence alkaline potassium per-sulfate digestion ultraviolet spectrophotometry of GB11894-89 water quality total nitrogen " to measure); Total phosphorus 0.3-0.4mg/L, clearance is greater than 80% (adopting " the mensuration ammonium molybdate spectrophotometry of GB11983-89 water quality total phosphorus " to measure); Go out water suspension less than 10mg/L (adopting " the gravimetry method of GB11901-89 water quality suspended substance " to measure).
Can find out by The above results, adopt the nitrogen removal rate that the utility model is dirty, the nitrogen removal rate of waste water ratio has the gas lifting pulsation push flowing tridimensional circulating oxidation ditch that adopts the funneling solid-liquid separator of bar shaped now to improve more than 10%.
The above only is the preferred embodiment of the utility model, is not the shape and the structure of the utility model are done any pro forma restriction.Every technical spirit according to the utility model all still belongs in the scope of the utility model technical scheme any simple modification, equivalent variations and modification that above embodiment did.
Claims (3)
1. three-dimensional in opposite directions cycling stream integrated oxidation ditch of symmetrical expression; Comprise gas lift plug-flow tridimensional circulation type oxidation ditch; In its ditch body, be provided with gas lift aerobic zone, aerobic zone, solid-liquid displacement zone, transition oxygen-starved area, oxygen-starved area; Be provided with the horizontal baffle that the ditch body is divided into upper and lower two-layer raceway groove in the middle and lower part of ditch body, said aerobic zone is located at top-layer channel, and lower floor's raceway groove is located in said oxygen-starved area; It is the inclination training wall of vertical headwall that horizontal baffle one end connects to its outside oblique upper extension and top, and said gas lift aerobic zone is located between inclination training wall and the ditch body headwall, on the ditch body of gas lift aerobic zone bottom, the micro-hole aerator group is set; At the horizontal baffle the other end is the transition oxygen-starved area; Solid-liquid displacement zone is located between the aerobic zone and transition oxygen-starved area of top-layer channel; The ditch body is provided with water inlet pipe, rising pipe and shore pipe, it is characterized in that the three-dimensional in opposite directions cycling stream integrated oxidation ditch of said symmetrical expression is to be communicated with rectangle integrated oxidation ditch that in opposite directions symmetrically arranged another gas lift plug-flow tridimensional circulation type oxidation ditch constitute with identical with its structure through both walls butt joint, transition oxygen-starved area by a said gas lift plug-flow tridimensional circulation type oxidation ditch; Between the central authorities of said rectangle integrated oxidation ditch, two symmetrical horizontal baffles and the position that is lower than two horizontal baffles the twin shaft reverser is set; An end that connects a horizontal rotating shaft along the horizontal said twin shaft reverser both sides of rectangle integrated oxidation ditch respectively; On the said horizontal rotating shaft fixedly the suit cross section be the bar shaped water conservancy diversion pulpboard that ∫ shape, centre are provided with axis hole; The other end of horizontal rotating shaft is supported on the rectangle integrated oxidation ditch side wall; The input aperture at twin shaft reverser top is fixedly connected the vertical rotating shaft that is driven by reducing motor, and reducing motor is fixedly mounted on rectangle integrated oxidation ditch top.
2. the three-dimensional in opposite directions cycling stream integrated oxidation ditch of symmetrical expression according to claim 1; It is characterized in that the solid-liquid separator that said solid-liquid displacement zone adopts is the funneling solid-liquid separator of bar shaped; The two vertical headwalls that comprise the settling section of crowding around solid-liquid displacement zone, disengaging zone and the settling region that are vertically connected between said rectangle integrated oxidation ditch both walls; Be positioned at settling section and receive mill weir with vertical headwall plurality of parallel connected vertically and be located at the heavy mud replacement assembly of settling region; Said vertical headwall comprises influent side headwall and water outlet side headwall; Be provided with the bar shaped water leg that is vertically connected between rectangle integrated oxidation ditch both walls in water outlet side headwall outer upper, said plurality of parallel is received mill weir and is located between influent side headwall and the water outlet side headwall, and is communicated with water leg through the corresponding receipts mill weir water outlet that is provided with on the water outlet side headwall; Said heavy mud replacement assembly is set between the influent side headwall of corresponding settling region and water outlet side headwall, and this assembly is the bar shaped funnel group that the bar shaped funnel vertical fixing by a plurality of connections arranged side by side forms between influent side headwall and water outlet side headwall.
3. the three-dimensional in opposite directions cycling stream integrated oxidation ditch of symmetrical expression according to claim 1 and 2 is characterized in that being provided with in said horizontal baffle bottom the vertical training wall section that a plurality of and said rectangle integrated oxidation ditch both walls and horizontal baffle are fixedly connected.
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| CN2012200692901U CN202465461U (en) | 2012-02-28 | 2012-02-28 | Symmetrical type opposite and three-dimensional circulating flow integrated oxidation ditch |
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| CN2012200692901U CN202465461U (en) | 2012-02-28 | 2012-02-28 | Symmetrical type opposite and three-dimensional circulating flow integrated oxidation ditch |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583892A (en) * | 2012-02-28 | 2012-07-18 | 居文钟 | Symmetrical opposite three-dimensional circular-flow integration oxidation ditch |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583892A (en) * | 2012-02-28 | 2012-07-18 | 居文钟 | Symmetrical opposite three-dimensional circular-flow integration oxidation ditch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121003 Effective date of abandoning: 20130703 |
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| RGAV | Abandon patent right to avoid regrant |