CN203373199U - Intelligent three-dimensional ecological self-backflow circulating nitrating device with low energy consumption - Google Patents

Abstract

The utility model relates to an intelligent three-dimensional ecological self-backflow circulating nitrating device with low energy consumption, wherein a wind power generator is arranged next to an anaerobic pool, a solar power generation device is arranged on the roof of the anaerobic pool, and the pool is internally provided with at least one three-dimensional ecological self-backflow circulating nitrating unit. Each unit is divided into an ecological deodorizing area and a circulating nitrating area from top to bottom. Each reaction area is divided into an aerobic zone, a facultative anaerobic zone, a settling zone and an anoxic zone from inside to outside. An aerating element is arranged in the aerobic zone. Sewage flows from the anoxic zone to the aerobic zone, and enters into the facultative anaerobic zone for reaction and primary sedimentation after reaction in the aerobic zone. Part of muddy water mixed liquids is aerated again to enter into the aerobic zone, and the balance flows to the anaerobic pool by self-backflow through a sewage guiding pipe. Supernate in the settling zone finally flows out through a water collecting pipe. According to the device provided by the utility model, sewage is circularly nitrified by self-backflow in the zones through aerating power and difference on gas and water so as to effectively remove pollutants, thereby achieving the discharge indexes such as deodorization, nitrogen and phosphorus removal and discharge of total nitrogen in upgrading and reconstruction of a municipal sewage treatment system.

Description

Less energy-consumption, smart three-dimensional ecology are from the nitrated device of reflux cycle

Technical field

The utility model relates to field of waste water treatment, is specifically related to the upgrading for sewage work, in particular in the urban sewage treatment system upgrading to strict ecological purifying processing devices of discharge index such as deodorizing dephosphorization denitrogenation and total nitrogens.

Background technology

Major river valley water in 2008 pollutes the result of appraisal and shows, the section ratio that the major river valley ammonia nitrogen surpasses V class standard value is 18.9% and 22.1%, and ammonia nitrogen surpasses chemical oxygen demand (COD) (COD) and becomes the primary index that affects the surface water quality of water environment.In the environmental protection planning of country " 12 ", the kind of principal pollutant being carried out to overall control will be increased.During " 12 ", when continuing to advance the work of chemical oxygen demand (COD) (COD) pollution emission reduction, be necessary to include ammonia nitrogen in the main Sewage Water Emissions in the whole nation restrictive target of controlling, by sewage work's upgrading, improve life source ammonia nitrogen removal efficiency, catch the key industrys such as chemical industry, papermaking, food-processing simultaneously, be aided with the agricultural sources prevention and cure of pollution, can effectively control the ammonia nitrogen total emission volumn.

Municipal sewage plant is one of major measure of these pollutions of control, existing century-old developing history.Urban sewage treatment process has also experienced three developing periods: bury at sewage one-level place, sewage second-level is processed, tertiary sewage treatment.In sewage treatment facility foul smell derive from sewage pre-treatment part (grille well, lift pump room water collecting basin, settling pit) and sludge treatment part (mud storage pool, dewater between etc.), be the emphasis of deodorizing.

Specifically to the urban sewage treatment process technology, mainly contain following several technology and there are the characteristics of compound Sustainable development:

(1) Anammox; (2) synchronous nitration. denitrification; (3) short distance nitration. denitrification; (4) denitrification phosphorus-collecting; (5) consume endogenous carbon source Simultaneous Nitrification one denitrification (SND); Etc..

According to the character of water pollutant and the characteristics in subtractive process, we are divided three classes the pollutent in sanitary sewage usually: the organic carbon pollutant, nitrogen-containing pollutant, contain phosphor contaminant: corresponding pollutant removing process adopts the biomineralization (organic carbon is transformed into to carbonic acid gas) of organic carbon usually, nitrification and denitrification (nitrogenous compound is transformed into to nitrogen) and biological dephosphorization (P contained compound is transformed into to insoluble inorganic phosphate precipitation).Due to the biological species difference of above-mentioned three processes, the biological characteristics difference, the processing unit of employing and process are not identical.People consider the difference of each section biological characteristics the earliest, the treatment process that adopts the many equipment of multistage to control respectively, as: aerobic (removing carbonaceous organic material) aerobic (nitrated) anaerobism (denitrification), although this technique is convenient to control, can make microorganism in the optimum growh state, increased processing cost but need to supplement new carbon source during due to anaerobic denitrifying, invested larger simultaneously because treatment process is long, people have developed again rearmounted nitration processes for this reason: anaerobism (denitrification) aerobic (de-organic carbon) aerobic (nitrated) is back to anaerobism section (partial discharge), in this technology utilization sewage, original carbon source is as the denitrifying energy, saved the new carbon source that need to add, but face the problem of backflow, the first has increased power consumption, the 2nd, reduced denitrification percent, because denitrification percent is directly related with recurrence rate, reach 90% denitrification percent and just need 9 times of quantity of reflux, power consumption and volume of equipment all increase greatly, investment does not reduce according to the set goal with working cost, implement the shortcoming of above-mentioned three kinds of technological processs in order to overcome the segmentation subset, sequencing batch active sludge SBR technique obtains common concern, it has simplified technological process and equipment, complete above-mentioned three processes by controlling different operating parameterss in a single devices, but, it has sacrificed top condition and the stability factor thereof of microorganism growth, in fact make various microorganism growth in a single devices, the a certain class Fast Growth of different time chien shihs and another a few class is suppressed, alternate run successively, total biological efficiency does not reach good order and condition.Simultaneously in order to realize the continuity of sewage treatment process, have to adopt the cycling service of alternately intaking of a plurality of single devices, its plant factor is lower, floor space and investment strengthen, wherein not reach Optimal State be also to cause volume of equipment load not high to biology, need to be than one of major reason of large equipment volume.Can realize continuous de-organic carbon in a single devices, denitrogenation, dephosphorization is the hot issue that people study always.

M.Ros and J.Vrtovsek have studied a kind of anaerobism. anoxic. and aerobic integratedization sewage disposal device, its main body experimental installation is a cylindrical pad tower reactor, tower body is because the control of oxygen supply position and quantity of reflux realizes three oxygen characteristic subregions: bottom l/4 is anaerobism section (void tower), middle part 1,4 is anoxic section (filler is arranged), and top 1/2 is aerobic section (filler is arranged); Sewage enters reactor from bottom, and at first, by oxygen-starved area, top, oxygen-starved area has refluxing opening that the sewage after the part anaerobic treatment is turned back to the pool of spouting; Sewage after anaerobic treatment upwards enters into oxygen-starved area, and realize by the aerobic zone water part being back to the bottom, oxygen-starved area in the source of oxygen-starved area trace dissolved oxygen; Sewage after process oxygen-starved area upwards enters into aerobic zone, the dissolved oxygen of aerobic zone derives from the oxygen supply equipment that is located at the aerobic zone bottom. in this reactor, bottom is equivalent to UASB, filler is not set, rely on anaerobic grain sludge to realize that acidification hydrolization deviates from the organic carbon pollutent, the suspension of particle is controlled by the quantity of reflux of anaerobism section itself.Anoxic section major function is denitrification, the micromolecular compound that its carbon source can be produced by the hydrolysis of anaerobism section easily provides, nitrifying process completes at aerobic section, by backflow, is incorporated into the anoxic section, and its primary process is similar to foregoing forward type biological denitrification process.Although this technique has realized serialization single devices anaerobism. anoxic. aerobic sewage treatment process, but self refluxing of anaerobism section needs power wheel drive, aerobic section is to the backflow of anoxic section also consumption of power, the forward type denitrification is not eliminated the requirement of high reflux ratio simultaneously. and high reflux ratio will bring high-solubility oxygen, anoxic section operating parameters is controlled and be difficult for stablizing.

S.H.Chuang, ete. developed another anaerobism one anoxic one aerobic integratedization sewage disposal device, three troughs adjacent one another are that its main equipment is horizontal positioned, the first groove is the anaerobism groove, the second groove is the anoxic groove, three-flute is aerobic slot, sewage enters reactor from the anaerobism groove, and overflow backward successively, anaerobism groove and anoxic groove all arrange and stir with the reinforcing mass transfer process, the anaerobism groove is by the air oxygen supply and realize whipping process, aerobic slot also is provided with pneumatic blodisc, to improve processing efficiency, simultaneously, its denitrification process still relies on the aerobic slot effluent recycling to realize to the anoxic groove.This reactor does not fundamentally overcome the defect of previous reaction device, and on the contrary, the stirring of anaerobism and anoxic groove has increased again power consumption, and Denitrification rate is still controlled by quantity of reflux, and quantity of reflux still exists the impact of dissolved oxygen.

Except forming as far as possible on structure of reactor integration apparatus, the reaction conditions that research is optimized in separating device is also to reduce the sewage disposal device cost, the importance of saving working cost.Ruey.Fang Yu, ere. studied in Continuous Flow SBR system and be implemented in the feasibility that line traffic control is carried out the enhanced sewage processing efficiency, its selected control parameter comprises redox potential (OPR), potential of hydrogen 0H), dissolved oxygen (DO), sludge concentration (MLSS), and carry out data processing and control with computer.Above-mentioned four kinds of parameters are to optimizing biological growth conditions, controlling various biochemical reaction processes has very important significance, especially the Controlling System based on neural network, can greatly reduce hydraulic detention time and aerobic power consumption: aerobic saving 45% of the residence time, anoxic saves 15.5%, total residence time saves 23.75%, aerobic energy-conservation up to 45%.

A large amount of Research And Engineering practices show, realize the aerobic three kinds of states of anaerobism one anoxic one and three kinds of innoxious processes of decarburization one denitrogenation one dephosphorization, liquid return is inevitable link, the oxygen supply aeration process that also is absolutely necessary simultaneously, both need the consumption of power, both can be combined is energy-conservation key issue.Airlift bioreactor is the widely biochemical reactor of application, also acquisition application (fluidized-bed wastewater treatment biochemical reactor) in aerobic sewage treatment process simultaneously in biological fermentation in recent years.

Guo--Qing Li.etc. has studied mass transfer and the gas-liquid cycle problem of stickiness non-Newtonian fluid in the internal circulation gas-lift type bio-reactor, has measured gas-liquid oxygen transfer rate constant K la and other kinetic parameters.Taku Fujiwara, ete. has studied various parameters in the baffling tubular reactor (such as inner and outer pipes diameter ratio, liquid circulation velocity etc.) to the organic carbon in sanitary sewage disposal (TOC), total nitrogen (TN), the impact of the decreasing ratio of dissolved nitrogen (DN).Above-mentioned research work focus on strengthening the gas-liquid mass transfer effect, improve uniprocessing efficiency, but for comprehensive dynamic efficiency and anaerobism. the anoxic process does not relate to.

The treatment process that current domestic urban wastewater treatment firm adopts, it is on the low side that ammonia nitrogen, total nitrogen are removed efficiency, total nitrogen particularly, clearance efficiency is generally lower than 80%, in order to meet the environmental requirement of country " 12 ", imperative to municipal wastewater treatment plant upgrading, and sewage work's upgrading faces two kinds of approach, the one, to sewage work's dilatation, the 2nd, need exploitation new high-efficiency denitrogenation material to reach the very efficient technique such as deodorizing dephosphorization denitrogenation and total nitrogen, but need like this regular hour and higher manpower and materials cost.

The utility model content

The purpose of this utility model is to overcome the prior art defect, a kind of comprehensively China's different geographical is provided, dissimilar Small Urban sewage discharge characteristics, for the discharge indexs such as deodorizing dephosphorization denitrogenation and total nitrogen not up to standard and the design the stereo ecological for sewage work's upgrading process from the nitrated device of reflux cycle.

The less energy-consumption for sewage work's upgrading the utility model proposes, smart three-dimensional ecology comprise anoxic pond from the nitrated device of reflux cycle, described anoxic pond is utilize the anoxic pond of original Sewage treatment systems or contact-oxidation pool is transformed into to anoxic pond, described anoxic pond top is provided with the roof solar power generation assembly, periphery arranges aerogenerator, by master controller, controls; Be provided with at least one stereo ecological in described anoxic pond from the nitrated unit of reflux cycle, each described stereo ecological is divided into ecological deodorizing district and circulation nitration reaction district from top to bottom from the nitrated unit of reflux cycle, described circulation nitration reaction district from-inner-to-outer is divided into aerobic zone, aerobic area, settling region and oxygen-starved area, described ecological deodorizing district is positioned at top, described circulation nitration reaction district, and in it, plantation has water to support plant; Described circulating reaction district is arranged in a circulating box, and this circulating box central zone is described aerobic zone, in described aerobic zone, is provided with aeration element, and top is communicated with described aerobic area, and bottom is provided with the internal recycle water inlet; Described aerobic area is to form around the outside of described aerobic zone; Described settling region is comprised of the outside around described aerobic area, and bottom, described settling region is communicated with described aerobic area bottom, and upper end, described settling region is provided with header; Described oxygen-starved area vertical surrounding is located at the zone beyond described aerobic area, and upper end is communicated with described anoxic pond, and bottom is communicated with described aerobic zone; Described circulating box bottom is provided with the mud thrust-augmenting nozzle; Described master controller also is electrically connected with flow director, dissolved oxygen controller, temperature regulator and and sludge concentration controller.

The less energy-consumption that the utility model provides, smart three-dimensional ecology is from the nitrated device of reflux cycle, by absorbing sun power and the wind-force that utilizes nature, for whole operation of sewage disposal system provides the energy, make it not need external source, and aboundresources, both can freely use, again without transportation, to environment without any pollution, its a plurality of stereo ecologicals that arrange in anoxic pond from the nitrated unit of reflux cycle under continuous running status, can in circulating box, realize the Gradient distribution of dissolved oxygen, and manage throughout in unit different zones is set, cultivate nitrobacteria and denitrifying bacterium, and by density difference and aeration power, sewage is circulated at regional, make mud realize endless backflow, remove organic pollutant thereby reach, the purpose of denitrogenation.Simultaneously, temperature and sludge concentration in flow while by control device, controlling the sewage disposal in pond, the content of dissolved oxygen, pond, the stereo ecological arranged at treating pond from the nitrated device of reflux cycle under sequence batch (or succession running condition, can cultivate nitrobacteria, aerobic area cultivation Denitrifying Phosphate Accumulating Organisms at aerobic zone, and then completing the less energy-consumption of sewage disposal, the intelligent technological process of controlling anaerobic phosphorus release, aerobic nitrification and double oxygen denitrification phosphorus-collecting, final realization removes the purpose of organic pollutant, denitrogenation and dephosphorization.

The less energy-consumption that the utility model proposes, smart three-dimensional ecology is from the nitrated device of reflux cycle just on the basis in aforementioned various research work, comprehensive China different geographical, dissimilar Small Urban sewage discharge characteristics, overcome prior art to discharge index shortcomings not up to standard such as deodorizing dephosphorization denitrogenation and total nitrogens, a kind of novel ecological sewage treatment technology has been proposed, in Sewage treatment systems upgrading process, can not increase the engineering land used newly, not newly-increased running cost, reach efficient, energy-conservation, low investment, low-cost, convenient management and operation, applicable region is target widely, purpose is deodorizing total phosphorus, ammonia nitrogen and total nitrogen etc. to be risen to the discharge index that is better than one-level A again.The organism that its high efficiency will be embodied in unit volume removes that load is high, and denitrification ability is strong, and dephosphorizing capacity is strong; Its energy saving will be embodied in and only depend on oxygen supply power to complete various water reflux courses, the dynamic efficiency of conventional oxygen supply process not only is embodied on the oxygen transfer efficiency, and be embodied on the promotion liquid return, can the biological denitrificaion target will be reached for by automatic control system especially, make mud realize endless backflow, realize consuming short distance nitration and the denitrification of endogenous carbon source; Its low investment will be embodied in the process that removes different pollutents (differential responses condition) and complete in a unit, facility compact, and floor space is little, and one-time investment is little, has reduced many refluxing unit energy consumptions, has reduced the facility investment expense; Its low cost will be embodied in power consumption and reduce rear electricity charge minimizing, and equipment maintenance cost reduces, and the manual operation expense reduces; Its intelligent advantage will be embodied in automatic detection and the feedback control of all multiparameters, make each reaction process all in corresponding zone, corresponding top condition, metastable operation; The accessibility of its operational administrative will be embodied in treating processes itself to be simplified, and detection level is higher automatically, and manually-operated error etc. can drop to minimum.

The accompanying drawing explanation

Fig. 1 is the utility model integral layout schematic diagram;

Fig. 2 is the utility model embodiment mono-front section view;

Fig. 3 is the utility model vertical view;

Fig. 4 is that the utility model stereo ecological is from the nitrated unit embodiment mono-structure front section view of reflux cycle;

Fig. 5 is the levitation device one side installation side view of the utility model stereo ecological from the nitrated unit embodiment mono-of reflux cycle;

Fig. 6 is the levitation device opposite side installation side view of the utility model stereo ecological from the nitrated unit embodiment mono-of reflux cycle;

Fig. 7 is the vertical view of the utility model stereo ecological from the nitrated unit embodiment mono-of reflux cycle;

Fig. 8 is the utility model stereo ecological plant basket structure vertical view in the nitrated unit of reflux cycle;

Fig. 9 is that the utility model stereo ecological is from the nitrated unit embodiment bis-structure front section views of reflux cycle;

Figure 10 is that the utility model is applied to the urban sewage treatment process schema;

Figure 11 is that the utility model is applied to the technique for treating industrial wastewater schema;

The comparison that table 1 is the utility model and traditional technology.

Embodiment

Below in conjunction with embodiment, the utility model is described in further detail.Should be appreciated that specific embodiment described herein, only for explaining the utility model, and be not used in restriction the utility model.

At first the utility model provides a kind of less energy-consumption for sewage work's upgrading, smart three-dimensional ecology from the nitrated device of reflux cycle, that the contact-oxidation pool of sewage disposal is transformed into to anoxic pond, and the roof solar device is set above this pond, periphery arranges aerogenerator, to generate electricity to whole operation of sewage disposal system, at least one stereo ecological is set in described anoxic pond from the reflux cycle processing unit, each stereo ecological can be embarked on journey according to the application place from the reflux cycle processing unit, in column or be array format, each described stereo ecological is respectively arranged with deodorizing district and circulation nitration reaction district from top to bottom from the reflux cycle processing unit, the nitration reaction that wherein circulates district is arranged in a circulating box, from-inner-to-outer is divided into aerobic zone, aerobic area, settling region and oxygen-starved area, upper end, described oxygen-starved area is communicated with described anoxic pond, bottom, described oxygen-starved area is communicated with described aerobic zone, described aerobic zone upper end is communicated with aerobic area, described aerobic area bottom is communicated with settling region again, simultaneously at aerobic zone, aeration element is set, and the flow when introducing controller and controlling the sewage disposal in pond, content, the temperature in pond and the sludge concentration of dissolved oxygen.Sewage is introduced in anoxic pond by water inlet pipe, sewage enters from the oxygen-starved area water inlet, internal recycle water inlet place through oxygen-starved area to aerobic zone, castering action by aeration element, make sewage be undertaken driving rising after biochemical reaction by aerobic zone (rising area), flow through to while approaching water surface 50-500mm, fluidized active sludge and liquid can flow to aerobic area (decline district) by the unlimited water outlet through being arranged on aerobic zone top, owing to after aerobic zone (rising area) aeration, containing bubble, density ratio aerobic area (decline district) is low, thereby can produce the density difference of rising area and last transition, make the place that between 2nd district, liquid is high from density flow to low density place, make aerobic area (decline district) interior active sludge and liquid carry out biochemical reaction and preliminary sedimentation, the supernatant liquor guiding is entered to settling region simultaneously, the part muddy water mixed solution is risen by the lifting of the aeration effect of entrainmenting again, reenter aerobic zone from the internal recycle water inlet of aerobic zone setting, at this moment, the active sludge and the liquid that enter aerobic zone rise by the effect of aeration element again, make active sludge and liquid in rising area again the unlimited water outlet by aerobic zone top reenter the aerobic area (decline district) in circulating box, form the repeatedly nitration reaction of sewage.In above-mentioned working cycle, the part muddy water mixed solution, is finally flowed out by inlet through the supernatant liquor by the nitration reaction that repeatedly circulates in settling region from being back in anoxic pond by the mud thrust-augmenting nozzle.Like this, by absorbing sun power and the wind-force that utilizes nature, for whole operation of sewage disposal system provides the energy, make it not need external source, and aboundresources, both can freely use, again without transportation, to environment without any pollution, simultaneously, flow while by control device, controlling the sewage disposal in pond, the content of dissolved oxygen, temperature in pond and sludge concentration, make to be positioned at aerobic zone, aerobic area, the foul smell that the sewage of settling region and oxygen-starved area produces in continuous flow process fully adsorbs and decomposes by filler and the plant roots and stems in deodorizing district, simultaneously on constantly, in lower reaching, in the outer circulation process at the abundant oxygen supply of aerobic zone and proper temperature, under nutritional condition, make to be invested in aerobic microorganism amount reproduction in this zone, cultivate nitrobacteria, cultivate Denitrifying Phosphate Accumulating Organisms at aerobic area, in settling region convergence precipitation, and utilize it that oxidation operation in sewage is decomposed, thus in the past, constantly make sewage enter its internal recycle, and then can complete the less energy-consumption of sewage disposal, the intelligent anaerobic phosphorus release of controlling, the technological process of aerobic nitrification and double oxygen denitrification phosphorus-collecting, realization is to consume short distance nitration and the denitrification of endogenous carbon source.

In said apparatus, the volumetric ratio of described aerobic zone and described aerobic area is got 1:0.4; The volumetric ratio of described aerobic zone and described oxygen-starved area is got 1:3; Its operating parameter is: the aerobic zone reaction times is 4-6h; Mixed liquor suspended solid, MLSS concentration MLSS is controlled at 2500-7000mg/L; Aerobic zone dissolved oxygen DO gets 2-5mg/L, and aerobic area dissolved oxygen DO gets 0.3-1.0mg/L, and circulation nitration reaction district pH value is 7-7.8, and reflux ratio is 2.5-5.

Referring to Fig. 1-Fig. 3, a kind of newly-built urban sewage treatment system that the utility model provides and the stereo ecological of urban sewage treatment system upgrading are from the nitrated device of reflux cycle, comprise that the contact-oxidation pool in the processing of raw waste water treatment system is transformed into anoxic pond 2, be provided with at least one internal recycle processing unit 1 in this anoxic pond 2, the interior transverse row of anoxic pond 2 shown in Fig. 2, Fig. 3 is shown 4 internal recycle processing units 1, can realize that settlement of sewage and supernatant liquor horizontal direction flow out in anoxic pond 2, anoxic pond 2 is provided with water outlet 22.Referring to Fig. 2, Fig. 4, Fig. 9, each described processing unit 1 is respectively arranged with deodorizing district A and circulating reaction district from top to bottom, and wherein the circulating reaction district is arranged in a circulating box 104, and circulating box 104 is in the interior transversely arranged layout of anoxic pond 2.Described deodorizing district A is positioned at circulating box 104 tops, plants and has water to support plant 4, and water is supported plant 4 support stems and is positioned at deodorizing district A, and the branches and leaves 41 on its top are revealed in above the interior sewage of anoxic pond 2, and its lower root 42 is placed in the inside of described circulating box 104; Described circulating reaction district B divides from-inner-to-outer to be divided into aerobic zone B1, aerobic area B2, B3He oxygen-starved area, settling region B4, wherein aerobic zone B1 is positioned at circulating box 104 zones, central zone, aerobic area B2 is the outside composition around described aerobic zone B1, and upper end is communicated with aerobic zone B1; Described settling region B3 is comprised of the outside around described aerobic area B2, and B3 bottom in settling region is communicated with aerobic area B2 bottom, and B3 upper end, settling region is provided with header 221; Described oxygen-starved area B4 vertical surrounding is located at the zone beyond described aerobic area B2, upper end is communicated with described anoxic pond 2, lower end is communicated with described aerobic zone B1, and described circulating box 104 is provided with the internal recycle water inlet 106 that can be communicated with the interior sewage of anoxic pond 2, and bottom is provided with mud thrust-augmenting nozzle 105; In described anoxic pond 2, be provided with water-in 112, with water inlet pipe 21, be communicated with, aerobic zone B1 also is provided with aeration element 108, this aeration element 108 is located at aerobic zone B1 bottom, can be by aeration element 108 oxygenations of aeration tube 3 for arranging in each aerobic zone B1 that are arranged at anoxic pond 2 bottoms, aeration tube 3 connects gas blower 400, for aeration element 108 provides oxygen.In said apparatus, each internal recycle processing unit is cultivated nitrobacteria and denitrifying bacterium in different zones, and by aeration power, by aerobic zone B1(rising area) in fluidized active sludge and liquid drive rising at aerobic zone B1, flow through to while approaching water surface 50-500mm, sewage disposal liquid flows to around the aerobic area B1(decline district beyond aerobic zone B1 periphery through the unlimited water outlet on aerobic zone B1 top) in, due to aerobic zone, B1 contains bubble, B1 is low for the density ratio aerobic area, form the density difference in two intervals, therefore, sewage disposal liquid just descends at this aerobic area B1 froth breaking and muddy water mixed solution, while being down to aerobic area B1 bottom section, sewage carries out biochemical reaction and preliminary sedimentation at aerobic area B1, supernatant liquor is entered to settling region B2 from its bottom-boot simultaneously, the effect of entrainmenting due to aerobic zone B1 aeration element 108, and B1 is low due to aerobic zone B1 density ratio aerobic area, the part muddy water mixed solution is reentered aerobic zone B1 by the lifting of the aeration effect of entrainmenting again, form the repeatedly nitration reaction of sewage, the part muddy water mixed solution, is circulated from being back in anoxic pond 2 again by mud thrust-augmenting nozzle 105 in addition, and the supernatant liquor of settling region B2 is finally flowed out by header 221.Like this, sewage disposal liquid constantly from inside to outside and from top to bottom circulates at regional, makes muddy water mixed solution realize endless backflow, removes organic pollutant thereby reach, the purpose of denitrogenation.The utility model is under continuous running status, the Gradient distribution that aerobic zone B1 that can be in circulating box 104 and aerobic area B1 realize dissolved oxygen, the sewage of each unit after the internal recycle nitration treatment is in the interior precipitation of anoxic pond 2, finally the supernatant liquor by the nitration reaction that repeatedly circulates flows out by anoxic pond water outlet 22, the mud 109 precipitated in aerobic area B1 is imported and is discharged to sludge thickener by mud suction pump 300 by the mud thrust-augmenting nozzle 105 of circulating box 104 bottoms, automatic sludge returning pipe 1051 imports in anoxic pond 2 by the gravity of mud self, (see Figure 10, Figure 11).In above-mentioned working cycle, sewage is imported in anoxic pond 2 by water inlet pipe 21 by intake pump 200, and its flow is controlled by flow director 91; And are agitators 13 in anoxic pond 2 inner bottom part settings, for anoxic pond 2 sewage stirring actions, can allow the various mass transfers in sewage fully mix; Aeration element 108 aeration rates are controlled by dissolved oxygen controller 92, to control the content of dissolved oxygen in sewage disposal liquid, the temperature of the interior sewage disposal liquid of anoxic pond 2 is controlled by temperature regulator 93, mud 109 concentration of discharging that precipitate are controlled by consistency controller 94, form the intelligent control process of whole system.

Below in conjunction with accompanying drawing, the utility model neutral body ecology is further described from the nitrated unit of reflux cycle 1 concrete structure.

Embodiment mono-:

Referring to Fig. 4, as the utility model stereo ecological, from nitrated unit embodiment mono-structure of reflux cycle, described circulating box 104 suspends and is arranged in anoxic pond 2, and top is provided with rectangle plant basket 116, and described water is supported 4 kinds of plants and planted in this plant basket 116.Specifically referring to Fig. 5-Fig. 8, plant basket 116 is fixing by plant basket support 115, two ends are provided with plant basket handle 1161, and 115 4 angles of plant basket support are respectively equipped with unit connection draw-in groove 101, can processing unit in each be connected in one in contact-oxidation pool 2 by web member, plant basket support 115 is fixed on a suspension device 114, this suspension device 114 is, in plant basket support 115 bottoms, the element that can suspend in water is set, by pressing plate 1141 and fastening piece 1142, make it lock ring in the periphery of circulating box 104 upper ends, both can be used for supporting plant basket support 115, plant basket 116 and the foster plant 4 of water of planting in this plant basket 116 are suspended on anoxic pond 2 waters surface, can make again whole circulating box 104 be suspended in anoxic pond 2 water.

Particularly, described water is supported plant 4 and can be selected the emergent that rhizome is flourishing, have dephosphorization and denitrification effect.Plant Net Photosynthetic Rate and dissolved oxygen distribution, total nitrogen and ammonia nitrogen removal frank marked positive correlation, and plant transpiration speed and ammonia nitrogen removal frank significant correlation.Suitably increase plant growing density and be conducive to improve the denitrification effect in sewage treatment process, but plant overstocked unfavorable on the contrary to improving dissolved oxygen levels and nitrogen removal rate.Significantly, employing is not gathered in plant and can be made terrestrial stem neither destroy roots of plants district microenvironment for plant-growth cycle and denitrogenation impact.The type of plant also has a great impact the effect of denitrogenation dephosphorizing.The research discovery, in the stereo ecological device matrix of plantation raupo and Rush, nitrogen, phosphorus are respectively than low by 18%～28% and 20%～31% in the contrast matrix of nothing plant, and visible raupo and Rush have absorbed nitrogen and the phosphorus of part in sewage.Decontamination effect improving by control experiment the utility model to sewage nitrogen, found that it is 77.7%, 71.2% and 66.4% that Rhizome of Grass leaf Sweelflag, Rush and 3 of Herba Iridis japonicae have the total nitrogen average removal rate of botanical system, and be only 55.8% without the clearance of botanical system.To the decontamination effect improving of sewage phosphorus, found that 3 have the clearance of botanical system to be respectively 61%, 65% and 59%, and be only 28% without the clearance of botanical system.By having studied the ability of 8 kinds of aquatic plant purification sewage, found that: the good and bad order of effect that the waterplant in summer that temperature is high is removed nitrogen is: water hyacinth, water lettuce, frogbit, duckweed, Chinese scholartree leaf duckweed, duckweed, water sieve; At temperature, be followed successively by frogbit, Herba Eichhorniae, duckweed, water lettuce, duckweed, Chinese scholartree leaf duckweed, water sieve low winter.

The emergent of planting in the utility model has and is adapted at the Structure and characteristics of surviving under aerobic or few oxygen condition, comprises the stem hypertrophy, and stem He Gen center has larger tissue, stem hollow, the dark root system of tool etc.This special construction of plant, be conducive to the transmission of oxygen in its body and can be delivered to the root district, not only met the respiration of plant in anaerobic environment, but also can promote the redox reaction in root district and the activity of aerobic microbiological, discharged uncontaminated air and remove peculiar smell.The oxygen produced under photosynthesis is delivered to the root district, form the microenvironment of oxidation in the medium of the reduction-state in Gen district, aerobic zone, root district provides microhabitat separately with aerobic, the double oxygen and the anaerobion that jointly exist for the root district of anoxic zones, makes different microorganisms can bring into play effect separately.Oxygen depends primarily on the concentration of inside plants oxygen, the oxygen requirement of matrix and the perviousness of plant endwall on every side in the release of plant root.Plant discharges oxygen by absorption at root is to be determined by itself structure, and the structure of plant has stoped its leakage radially, and makes great efforts to make the loss that is discharged into the oxygen in root district to reduce to minimum.The release rate of the oxygen generally inferior apex zone at root is the highest, and reduces with the increase of the distance tip of a root.Waterplant has convection ventilating tissue, Qi Gen district and root all have the concentration of higher inside oxygen, but flowing of the gas of this convection obviously increased the length of oxygen supply root, can also reduce some potential objectionable impuritiess of root by oxidation and detoxification simultaneously.Except root system can discharge oxygen, root system can also discharge other material.So more than 100 kind of emergents such as described emergent is preferably Arundo donax, Alocasia ordora, fragrant Alocasia ordora, common calla, Canna generalis Bailey, Monstera deliciosa, He Wanglan, schefflera, nasturtium, Rhizome of Common Aspidistra, the thorn that comes into leaves certain herbaceous plants with big flowers, climbing fig, jade hairpin, marsh nutgrass flatsedge, Rhizoma Acori Calamis, above-mentioned plant harvesting and arrangement are very easy to.

Understandably, the foster plant 4 of above-mentioned water can also be the foster flowers of water or vegetables.The utility model of being located at community can cultivate flowers in deodorizing district A, and the foul smell ，Gei community in the time of both can absorbing sewage disposal provides pure and fresh flower fragrance, and the Hai Kedui community is beautified simultaneously, is to kill two birds with one stone.Deodorizing district A cultivation vegetables, the utility model that is arranged at sewage work can be become to the plantation base of vegetables, can reach multiple effect equally.

In described plant basket 116, be provided with and can be used for supporting the deodorizing filler 102 that water is supported the rhizome of plant 4 and adsorbable, degrading microorganism, absorption foul smell.Further, supporting described water, to support the deodorizing filler 102 of plant 4 rhizomes be gac, haydite or photocatalyst new composite carbon material.Certainly, can be also other fillers.The utility model preferred light catalyst new composite carbon material.Described photocatalyst new composite carbon material has three kinds of red-brown, white and black, is to be formed by compound firing such as charcoal, potter's clay, photocatalyst agent and high temperature cakingagents.Can be as required in production realistic existing size, microporosity and water-intake rate is how little is adjusted, the aperture of finished product is between the 0.06-6 micron, and weight can be adjusted between 0.6-2.7g/cm3, and specific surface area can reach about 1.2 * 104cm2/g.In building-up process, make its hole wall glassy phase and crystal interweave and grow into the triplen of high-strength mechanical performance, internal capillary is prosperity and distribution gradient very, has the ability of good adsorption and desorption.With traditional gac, compare, photocatalyst new composite carbon material has improved adsorption fouling particulate matter kind greatly, improved adsorption efficiency and saturated capacity, its adsorption efficiency be common gac 2-4 doubly, and overcome and use gac can produce the shortcoming of powder and black pollution.In environmental applications, because of the high-rate fitration material that it has strong adsorptive power and resistance to erosion, resistance to wears, the characteristic such as high temperature resistant, corrosion-resistant can replace gac and haydite to purify as empty G&W; Because of its have ultralight body weight suspension and resistance to erosion, resistance to wear, the characteristic such as high temperature resistant, corrosion-resistant can replace conventional filler.While being used as the high speed filtrate of industrial waste gas purifying, because the specific surface area of photocatalyst new composite carbon material reaches 1.2 * 104m2/g left and right, and internal run-through micropore distribution gradient, material is ultralight, the physics and chemistry stable in properties, the acid-fast alkali-proof superior performance, and move and be adsorbed because intergranular Van der Waals force, Coulomb's force and surface tension make suspended substance or waste gas, adsorptive power is extremely strong, speed is exceedingly fast, by the photocatalyst technology of proprietary ultraviolet source, can realize the function that decompose on absorption limit, limit.

The foster plant 4 of water be arranged in oxygen case 104 is held concurrently in circulation in the plant blue 116 on the blue support 115 of plant is suspended in anoxic pond 2 waters surface, the whole suspension growths of the ecological filler of its powerful rhizome System forming are in sewage, utilize the root system that waterplant is huge, the foul smell produced when in the 102 pairs of waste water of deodorizing filler that are arranged at support rhizome in plant blue 116 and deodorizing, microorganism and system are processed is adsorbed, degraded, on the other hand when foul smell upwards overflows, by waterplant, luxuriant branches and leaves form an adsorbable foul smell, prevent the sealing coat of foul smell to external diffusion, thereby the denitrogenation dephosphorizing deodorizing that realizes waste water is processed.

In the utility model embodiment, also the deodorizing filler 102 that supports rhizome can be placed in to plant indigo plant 116 as carrier---be similar to the soil of plant, making water support plant 4 root systems 42 is fixed in sewage, in reaction process, foul smell contacts with the microorganism on the deodorizing filler 102 that supports rhizome simultaneously, further adsorb and decompose odor, and powerful rhizome system is purified waste water by it.

Please again referring to Fig. 4, the utility model stereo ecological is in nitrated unit 1 embodiment mono-of reflux cycle, be provided with biologic packing material 121 in described circulating box 104, fixing and in circulating box 104 central zones by filler anchor 120, filler anchor 120 is connected with plant blue 116, and be suspended in circulating box 104 centers, form described aerobic zone B1.Biologic packing material 121 in aerobic zone B1 hollow tubular is in the form of a ring arranged, as the aerobe carrier, is suspended in circulating box 104, and filler growth inside anerobe, producing denitrification can denitrogenation; Outside growth aerobic bacteria, can remove organism, has the nitrification and denitrification process in whole treating processes simultaneously.Described circulating box 104 tops, and be positioned at the zone beyond aerobic zone B1 upper opening, there is a plurality of vertically disposed outer flow deflectors 113, dividing plate 103 and interior flow deflector 111, described outer flow deflector 113, dividing plate 103 and interior flow deflector 111 tops all are fixed on the bottom of plant basket support 115, both can be used for the guiding fluid circulated, each can be distinguished again every, wherein said interior flow deflector 111 is separated aerobic area B2 and aerobic zone B1, and lower end bends inwards and extends to aeration element 108 in the same level position; Described dividing plate 103 is separated aerobic area B2 and negative area B3, and lower end extends perpendicularly to aerobic area 2/3 position, and aerobic area B2 bottom is communicated with negative area B3 bottom; Described outer flow deflector 113 is separated B3Yu oxygen-starved area, settling region B4, and lower end also bends inwards and extends on the level attitude lower than aeration element 108.Described circulating box 104 bottoms are contraction-like, are convenient to the whereabouts of mud 109, and its bottom is provided with mud thrust-augmenting nozzle 105, and the mud 109 that precipitation falls can be discharged to anoxic pond or sludge thickener (seeing Figure 10, Figure 11) from this pipe.

The utility model embodiment mono-structure, in the anoxic pond 2 in Sewage treatment systems, a plurality of stereo ecologicals are suspended in pond from the nitrated unit 1 of reflux cycle, the anoxic pond 2 of the raw waste water treatment system of take in processing increase air lifts rise stereo ecological from reflux cycle nitration treatment unit as main, the plant purification organism is that auxiliary a kind of ecosystem is processed structure cheaply.In anoxic pond 2, because the water displacement that suspension device 114 can carry reaches 900 kilograms, therefore supporting plant 4, the circulating box 104 that can be 600 kilograms by total amount, plant basket 116, deodorizing filler 102 and water is suspended in anoxic pond 2.Simultaneously, be arranged at aeration tube aeration in the aeration element 108 in aerobic zone B1, fluidized sewage in anoxic pond 2 is driven vertically and rises at aerobic zone B1, flow through to while approaching water surface 50-500mm, because run into the outward opening transverse flow flowed to by aerobic zone B1 top that stops of deodorizing district A, enter the interior aerobic area B1(decline district of circulating box 104) in.For further standard flows to, but the interior vertically disposed interior flow deflector 111 constrained flow state activated sewages of circulating box 104 force to enter aerobic area B1(decline district), while being down to aerobic area B1 bottom section, sewage carries out biochemical reaction and preliminary sedimentation at aerobic area B1, supernatant liquor is entered to settling region B2 from its bottom by dividing plate 103 guiding simultaneously, due to aerobic zone B1(rising area) contain bubble, density ratio aerobic area B1(decline district) low, produced the density difference of rising area and last transition, make liquid between 2nd district produce circulation, simultaneously bottom the aerobic zone B1 after aeration, due to the effect of entrainmenting that has aeration, the part muddy water mixed solution that water conservancy diversion descends is reentered aerobic zone B1 by the lifting of the aeration effect of entrainmenting again, form the repeatedly nitration reaction of sewage, the part muddy water mixed solution, is circulated from being back in anoxic pond 2 again by mud thrust-augmenting nozzle 105 in addition, and the supernatant liquor of settling region B2 is finally flowed out by header 221.The mud 109 that aerobic area B1 falls is discharged by the mud thrust-augmenting nozzle 105 of circulating box 104 lower ends.The present embodiment is adapted to sewage work's transformation of not stopping.

Embodiment bis-:

Referring to Fig. 9, the present embodiment and embodiment mono-are basic identical, and difference is, described circulating box 104 is fixedly installed in anoxic pond 2, and top is provided with rectangle plant basket 116, and described water is supported 4 kinds of plants and planted in this plant basket 116.With embodiment mono-, plant basket 116 is fixing by plant basket support 115, two ends are provided with plant basket handle 1161, and 115 4 angles of plant basket support are respectively equipped with unit connection draw-in groove 101, can processing unit in each 1 be connected in one in anoxic pond 2 by web member, plant basket support 115 is connected and fixed with circulating box 104, and 104 of circulating boxes are fixed in anoxic pond 2 by support foot rest 107.With embodiment mono-, the present embodiment is in the anoxic pond 2 in Sewage treatment systems, a plurality of stereo ecologicals are fixed in pond from the nitrated unit 1 of reflux cycle, the anoxic pond 2 of the raw waste water treatment system of take in processing increase air lifts rise stereo ecological from reflux cycle nitration treatment unit as main, the plant purification organism is that auxiliary a kind of ecosystem is processed structure cheaply.In anoxic pond 2, be arranged at aeration element 108 aerations in aerobic zone B1, fluidized sewage in anoxic pond 2 is driven and rises at aerobic zone B1, flow through to while approaching water surface 50mm, because run into the outward opening transverse flow flowed to by aerobic zone B1 top that stops of deodorizing district A, enter in the interior oxygen-starved area B4 of circulating box 104 by internal recycle water inlet 106106.The interior vertically disposed outer diaphragm of circulating box 104 113 lower ends extend to aerobic area B1 and lower than aeration element 108 level attitudes, but constrained flow state activated sewage forces to enter aerobic area B1(decline district), while being down to aerobic area B1 bottom section, sewage carries out biochemical reaction and preliminary sedimentation at aerobic area B1, supernatant liquor is entered to settling region B2 from its bottom by dividing plate 103 guiding simultaneously, due to aerobic zone B1(rising area) contain bubble, density ratio aerobic area B1(decline district) low, produced the density difference of rising area and last transition, therefore, produce circulation containing alveolate sewage its muddy water mixed solution liquid between 2nd district after aerobic area B1 froth breaking, simultaneously bottom the aerobic zone B1 after aeration, due to the effect of entrainmenting that has aeration, the sewage of the aerobic area B1 that water conservancy diversion descends just sucks by aerobic zone B1 bottom again, enter again aerobic zone B1, oral area by its opened upper end after rising outwards enters aerobic area B1 again, therefore form the nitrifying process that circulates from inside to outside, finally the settling region B2 supernatant liquor by the nitration reaction that repeatedly circulates is finally flowed out by header 221.The mud 109 that aerobic area B1 falls is discharged to anoxic pond or sludge thickener (seeing Figure 10, Figure 11) by the mud thrust-augmenting nozzle 105 of circulating box 104 lower ends.The present embodiment is adapted to the newly-built or transformation of stopping of sewage work.

The utility model is applicable to municipal sewage plant's upgrading, adopts foundation and the design of kinetic model and parameter in practical engineering application:

Stereo ecological is in the nitrated unit 1 of reflux cycle, the biochemical kinetic model of circulating reaction district B and the foundation of parameter can be according to operation and the operating method of lab scale process, determine the parameters such as speed of reaction, reaction times and reactor effective volume in the biochemical kinetics of periodical operation and operate continuously, for practical engineering application from now on provides reference frame.

1. the general requirement of the utility model application

(1) the utility model should be for small-sized town sewage and Industrial Wastewater Treatment engineering, and its single cover sewage load should be less than 150m3/d, when processing the water yield, is greater than 150m ³during/d, should adopt the circulate mode of nitrated device cooperation of many cover stereo ecologicals.

(2) water inlet of the present utility model should meet following condition:

1) water temperature is preferably that 10 ℃～37 ℃, pH are preferably 6.0～9.0, BOD ₅/ COD _crvalue should be greater than 0.3, nutrient combination is than (BOD ₅: nitrogen: phosphorus) be preferably 100:5:1, influent COD Cr concentration should be lower than 1000mg/L;

2) having while removing the ammonia nitrogen requirement, water inlet total alkalinity (in CaCO3)/ammonia nitrogen value is suitable >=and 7.14, should supplement basicity while not meeting;

While 3) removing the total nitrogen requirement, denitrification require the carbon source BOD5/ total nitrogen value of water inlet suitable>=4.0, total alkalinity is (with CaCO ₃meter)/and the ammonia nitrogen value is suitable>=and 3.6, answer supplementary carbon source or basicity while not meeting;

While 4) the dephosphorization requirement being arranged, the five-day BOD (BOD in sewage ₅the ratio of)/total phosphorus should be greater than 17:1;

While 5) requiring dephosphorization simultaneously, denitrogenation, should meet 3 simultaneously) and 4) requirement.

(3), when the utility model water outlet is directly discharged, should meet country or local emission standard requirement; While entering the next stage processing unit, should meet the water inlet requirement of next stage processing unit.

(4) according to the denitrogenation dephosphorizing requirement, should be in stereo ecological circulates nitration processes preposition anoxic pond.

(5), when influent quality does not meet (2) defined terms, should take suitable pre-treatment and pretreatment technology according to influent quality.

(6) soda acid medicament, carbon source medicament and dephosphorization medicament storage tankage should be by the dosage designs of the 4d～7d of theoretical chemical feeding quantity, and medicine system should not be less than 2, should adopt volume pump to add.

2., while applying the utility model, municipal sewage treatment should adopt flow process shown in Fig. 9, flow process shown in the appropriate to the occasion employing Figure 10 of Industrial Wastewater Treatment.

3. pre-treatment and pre-treatment (seeing Figure 10, Figure 11)

1) before water inlet system, grid should be set.Inlet pumping station and grid design should meet the relevant regulations of GB50014.

2) fluidized-bed process should arrange settling pit after grid, and the design of settling pit should meet the relevant regulations of GB50014.

3) during higher than 200mg/L, should before the nitrated device of circulation, preliminary sedimentation tank be set when water inlet suspended substance (SS), the design of preliminary sedimentation tank should meet the relevant regulations of GB50014.

4) when above, equalizing tank should be set when the daily variation maximum value of water quality or the water yield twice that is minimum value or twice.The design of equalizing tank should meet following requirement:

A) the equalizing tank capacity should be determined according to the wastewater flow change curve; While there is no flow changing curve, the residence time of equalizing tank is preferably 6h～12h;

B) in equalizing tank, whipping appts should be set, should adopt stirrer or aeration agitation mode;

C) the equalizing tank water side should arrange the device that scums, and at the bottom of pond, desanding and mud discharging device should be set.

5) pH regulator should meet the following requirements:

A) as water inlet pH<6.0 or pH > 9.0 the time, should supplement in time appropriate soda acid medicament;

B) medicament kind, dosage and add a little and should determine by test in place;

C) the soda acid medicament can adopt dilute hydrochloric acid, dilute sulphuric acid, lime or sodium carbonate etc.;

D) e-quipment and pipe of contact acid caustic corrosion material should be taked anticorrosive measure.

6) carbon source is regulated and should be met the following requirements:

A) as water-inlet carbon source BOD ₅/ total nitrogen value<4.0 o'clock, should supplement proper amount of carbon source in time;

B) medicament kind, dosage and add a little and should determine by test in place;

C) the carbon source medicament can adopt the high concentrated organic wastewater of the discharges such as methyl alcohol, acetic acid or food brewery;

When d) storage and use methyl alcohol are as carbon source, should do corresponding gas defence protection;

E) e-quipment and pipe of contact acetic acid corrosives should be taked anticorrosive measure;

F) the carbon source dosage should be calculated as follows:

BOD ₅=2.86×(N ₁-N ₀)×Q…………………………（1）

In formula:

BOD5---BOD5 amount corresponding to carbon source added, mg/L;

N1---in ammonia nitrogen situation up to standard, during supplementary carbon source, do not process the total nitrogen concentration of water outlet, mg/L;

The water outlet total nitrogen concentration of N0---standard-required, mg/L;

Q---sewage design discharge, m3/d.

4. design variable of the present utility model

(1) the aerobic reactor zone volume is determined

While 1) according to the volumetric loading of the nitrated device of circulation, determining the aerobic reactor zone volume, should be calculated as follows:

V ₁＝Q(S _o-S _e)/N _v…………………………（2）

In formula:

V1---the nitrated device aerobic reactor zone volume that circulates, m3;

Q---sewage design discharge, m3/d;

So---the nitrated device water inlet chemical oxygen demand (COD) that circulates, mg/L;

Se---the nitrated device water outlet chemical oxygen demand (COD) that circulates, mg/L;

Nv---volumetric loading, kgCOD/(m3d).

2) volumetric loading (Nv) should be according to test or the design parameter determination of similar sewage, as without other data the time, and can be with reference to as follows through data:

A) as waste water BOD5/CODCr > 0.4 the time, the desirable 3kgCOD/(m3d of Nv)～5kgCOD/(m3d);

B) in waste water during 0.3<BOD5/CODCr<0.4, the desirable 1kgCOD/(m3d of Nv)～3kgCOD/(m3d);

C), in waste water during BOD5/CODCr<0.3, the value that should improve BOD5/CODCr by pre-treatment and pre-treatment make it be greater than 0.3.

While 3) according to hydraulic detention time θ, determining the aerobic reactor zone volume, should be calculated as follows:

V ₁＝Q·θ……………………………………………（3）

In formula:

V1---the nitrated device aerobic reactor zone volume that circulates, m3;

Q---sewage design discharge, m3/d;

θ---hydraulic detention time, h.

4), for sanitary sewage, the desirable 4h～6h of θ in formula (3), for the desirable 5h～8h of trade effluent or look its biodegradability and determine.After obtaining V1, should check by formula (2).

(2) B volume in circulating reaction district is determined

1) volumetric ratio of aerobic zone and aerobic area is designed to 1:0.4.

2) the oxygen-starved area volume should be calculated as follows:

${\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="HDA00003301877200021.png,HDA00003301877200031.png"\; state="\{\{state\}\}">V</figure-callout>}}_2=\frac{V_1{\mathrm{<figure-callout\; id="2"\; label="D"\; filenames="HDA00003301877200021.png,HDA00003301877200031.png"\; state="\{\{state\}\}">D</figure-callout>}}_2^2}{{\mathrm{<figure-callout\; id="1"\; label="D"\; filenames="HDA00003301877200011.png,HDA00003301877200031.png"\; state="\{\{state\}\}">D</figure-callout>}}_1^2-{\mathrm{<figure-callout\; id="2"\; label="D"\; filenames="HDA00003301877200021.png,HDA00003301877200031.png"\; state="\{\{state\}\}">D</figure-callout>}}_2^2}...\left(4\right)$

In formula:

V2---oxygen-starved area volume, m3; V1---the nitrated device aerobic zone volume that circulates, m3;

D1---the nitrated device area that circulates, m2; D2---oxygen-starved area area, m2.

(3) stereo ecological the determining of oxygen-supplying amount of nitrated device that circulate

1) circulate nitrated device of stereo ecological adopts the blast aeration oxygen supply, and aerator should be located at over against the nitrated bottom of device of the circulation in up-flow district, should adopt uniform middle micro porous aeration head or perforated pipe aerating regulation.The sewage oxygen requirement should be calculated as follows:

O ₂＝0.001aQ(S _o-S _e)-cΔX _vss+b[0.001Q(N _k-N _ke)-0.12ΔX _vss]-0.62b[0.001Q(N _t-N _te-N _oe)-0.12ΔX _vss]……………(5)

In formula:

O2---sewage oxygen requirement, kgO2/d; Q---sewage design discharge, m3/d;

So---water inlet five-day BOD, mg/L; Se---water outlet five-day BOD, mg/L;

Δ Xvss---discharge the microbial biomass of system, kg/d; Nk---water inlet total Kjeldahl nitrogen concentration, mg/L;

Nke---water outlet total Kjeldahl nitrogen concentration, mg/L; Nt---water inlet total nitrogen concentration, mg/L;

Nte---water outlet total nitrogen concentration, mg/L; Noe---water outlet nitrate, mg/L;

The oxygen equivalent of a---carbon, with the five-day BOD timing, get 1.47 when carbonaceous material;

B---oxidation per kilogram ammonia nitrogen requisite oxygen amount (kgO2/kgN), get 4.57;

The oxygen equivalent of c---bacterial cell, get 1.42.

While 2) removing carbon based pollutants, the aerobic 0.7kgO2/kgBOD5 of measuring of nitrated device sewage～1.2kgO2/kgBOD5 circulates.

When 3) stereo ecological circulation nitration processes is selected blast aerator and equipment, should be according to different blast apparatuses, aerating apparatus, be arranged in the undersurface degree of depth, water temperature, in factors such as dirty water oxygen overall transfer characteristic, local sea level elevation and expection biological fluidized bed dissolved oxygen concentrations, the sewage oxygen requirement of calculating is scaled to sewage oxygen requirement under standard state.

4) the lower sewage oxygen requirement of standard state (0.1MPa, 20 ℃) should be calculated as follows:

O _s＝K _o·O ₂……………………（6）

$K_o=\frac{C_{s\left(20\right)}}{\mathrm{\&alpha;}(\mathrm{\&beta;}\&CenterDot;\mathrm{\&rho;}\&CenterDot;C_{\mathrm{sb}\left(T\right)}-C_o)\&times;{1.024}^{(T-20)}\&times;F}...\left(7\right)$

$C_{\mathrm{sb}\left(T\right)}=C_{s\left(T\right)}(\frac{P_b}{2.026\&times;{10}^5}+\frac{O_t}{42})...\left(8\right)$

P _b＝P+9.8×10 ³H…………………………（9）

$\mathrm{\&rho;}=\frac{{\mathrm{<figure-callout\; id="1"\; label="P"\; filenames="HDA00003301877200011.png,HDA00003301877200031.png"\; state="\{\{state\}\}">P</figure-callout>}}_1}{1.013\&times;{10}^5}...\left(10\right)$

$O_t=\frac{21(1-E_A)}{79+21(1-E_A)}\&times;100\%...\left(11\right)$

In formula:

OS---sewage oxygen requirement under standard state, kgO2/d;

Ko---oxygen requirement correction factor;

O2---sewage oxygen requirement, kgO2/d;

CS (20)---saturated dissolved oxygen concentration in clear water under standard conditions, get 9.2mg/L;

CSb (T)---under T ℃, atmospheric pressure, the mean value of mixed solution saturated dissolved oxygen concentration in the nitrated device that circulates, mg/L;

CS (T)---under T ℃, atmospheric pressure, clear water surface saturated dissolved oxygen concentration value, mg/L;

Co---mixed solution residue dissolved oxygen, generally get 2mg/L;

α---the ratio of total oxygen transfer coefficient in total oxygen transfer coefficient and clear water in mixed solution, generally get 0.8～0.85;

The ratio of the saturation values of dissolved oxygen in the saturation values of dissolved oxygen of β---mixed solution and clear water, generally get 0.9～0.97;

F---aeration diffusion facilities damage factor, generally get 0.65～0.9;

ρ---pressure correcting coefficient;

P1---location true pressure, Pa;

T---design water temperature, ℃;

Pb---the absolute pressure in air-diffuser exit, Pa;

The fitting depth of H---air-diffuser, m;

P---barometric point, P=1.013 * 105Pa;

The coefficient of oxygen utilization of EA---air-diffuser, generally provided by manufacturer;

Ot---the volume percent of oxygen in the utility model water surface evolving gas after aeration.

5) under standard state, the blast aeration air demand is calculated as follows:

$E_A=\frac{O_s}{S}\&times;100\%...\left(12\right)$

S＝G _s×0.21×1.331=0.28G _s………（13）

$G_s=\frac{O_s}{0.28}{E}_A...\left(14\right)$

In formula:

The coefficient of oxygen utilization of EA---air-diffuser, generally provided by manufacturer;

Os---sewage oxygen requirement under standard state, kgO2/d;

S---oxygen-supplying amount, kgO2/h;

0.21---oxygen is percentage in air;

1.331---in the time of 20 ℃, the density of oxygen, kg/m3;

Air demand under Gs---standard state, m3/h.

6) the utility model should arrange a set of standby blast aeration equipment.

7) should select low noise gas blower, the air blast machine room should be taked the sound insulation and noise reduction measure, and meets the regulation of GB12523.

8) single-stage high-speed aeration centrifugal blower should meet the regulation of HJ/T278; Root's blower should meet the regulation of HJ/T251; Micro-hole aerator should meet the regulation of HJ/T252.

5. the speed of reaction in the utility model biochemical kinetics of intermittent water inflow

Active sludge in the utility model of lab scale in aerobic zone and aerobic area is batch culture.The bacterium of batch culture can not continuously breed.When bacterial equilibrium is grown, its chemical constitution is constant.This has simplified the mensuration work of bacterial cultures proliferation rate, because measure the proliferation rate that the rate of increase of any composition in bacterial cultures just is enough to represent bacterium.

Therefore, the proliferation rate of the bacterial cultures of balanced growth can mean with following formula:

$\frac{\mathrm{dx}}{\mathrm{dt}}=\mathrm{\&mu;x}...\left(15\right)$

In formula, μ---proliferation rate constant, or claim than proliferation rate h ^-1;

X---bacterial concentration, mg/L.

T---the reaction times, h.

Adopt the solids concn MLSS of mixed solution to replace the bacterial concentration x alive in above formula, and with capitalizing

X means, unit is mg/L.That is:

$\frac{\mathrm{dX}}{\mathrm{dt}}=\mathrm{\&mu;X}...\left(16\right)$

In addition, the proliferation rate formula of bacterium meets the Monod equation:

$\mathrm{\&mu;}=\frac{{\mathrm{\&mu;}}_{\max }C}{K_S+C}...\left(17\right)$

In formula, μ _max---maximum proliferation rate constant, or claim high specific proliferation rate, h ^-1;

K _s---saturation constant,

the time the concentration C value;

C---organic concentration, mg/L.

From formula (17), can draw, when nutrient concentrations is very low, the μ value reduces, thereby the growth velocity of bacterium descends thereupon.With the increase of nutrient concentrations, the μ value increases, and growth velocity also just rises, and obtains larger biomass.But the growth velocity of bacterium also slows down.Little test result shows, when temperature is about 30 ° of C, and the minimum total organic matter concentration in circulating reaction district in the utility model, nutrient concentrations, be the 150mg/L left and right.In the exponential growth stage, there is following proportional relationship between the multiplication rate dX/dt of bacterium and the nutraceutical minimizing speed dC/dt of restriction:

$\frac{\mathrm{dX}}{\mathrm{dt}}=-Y\frac{\mathrm{dC}}{\mathrm{dt}}...\left(18\right)$

In formula, Y is performance factor (yield factor), and its connotation is shown out in following formula:

As seen from the above equation, Y represents the bacterium quality that every gram nutrition produces.

By formula (17) substitution formula (18), can obtain:

$r_C=-\frac{\mathrm{dC}}{\mathrm{dt}}=\frac{1}{Y}\frac{\mathrm{dX}}{\mathrm{dt}}=\frac{1}{Y}\frac{{\mathrm{\&mu;}}_{\max }C}{K_S+C}X...\left(19\right)$

In formula, r _cspeed of reaction in one biochemical kinetics, mg/(L.h).

When substrate concn is very little:

biochemical reaction rate r in type in the circulating reaction district _cexpression formula:

$r_C=-\frac{\mathrm{dC}}{\mathrm{dt}}=\mathrm{kCX}...\left(21\right)$

(2) reaction times determines

When the utility model is done to material balance, should grasp two principal character: the one, carry out in process the input and output without material in reaction; The 2nd, due to the effect of airflow stirring, in aerobic zone, material fully mixes, the concentration homogeneous, and also the concentration of reaction system only changes with the reaction times.Therefore can do material balance to whole device.

To biochemical reaction, the optional substrate of the component of accounting and product, also can account by bacterium.As response matrix and product are done to material balance, its fundamental relation formula is:

[component enters the amount of this volume element]=[component flows out the amount of this volume element]+[amount that in volume element, component transforms]+[component semi-invariant in volume element]

According to above formula, to the stereo ecological of the periodical operation nitrated device that circulates, its material balance formula should be:

The cumulative speed of reactive component conversion rate=reactive component

?

$V_R{r}_C=-\frac{{\mathrm{dN}}_C}{\mathrm{dt}}...\left(22\right)$

Can be obtained fom the above equation:

$r_C=-\frac{1}{V_R}\frac{{\mathrm{dN}}_C}{\mathrm{dt}}...\left(23\right)$

In formula, V _r---reactor effective volume, L;

N _c---the amount of matrix, mg.

To liquid phase reaction:

$r_C=-\frac{\mathrm{dC}}{\mathrm{dt}}...\left(24\right)$

If make t=0, C=Co; T=t, C=Ct, by formula (24) variables separation integration, obtains:

$t=-{\&Integral;}_{C_0}^{C_t}\frac{\mathrm{dC}}{r_C}...\left(25\right)$

By formula (21) substitution formula (25), can obtain the circulate expression formula of reaction times t of nitrated device of stereo ecological under the low concentration sewage condition:

$t=-{\&Integral;}_{C_0}^{C_t}\frac{\mathrm{dC}}{r_C}=-\frac{1}{\mathrm{kX}}\ln \frac{C_t}{C_0}...\left(26\right)$

By the reaction times T=24 of the mounted cast of lab scale, can try to achieve respectively the k value of reactor for treatment sanitary sewage under differing temps: when temperature is 11 ° of C, K=5.3 * 10 ^-5l/mg.h, when temperature is 30 ° of C, K=1.3 * 10 ^-4l/mg.h.

Above-mentioned data show: under the low condition of water inlet substrate concn, temperature has considerable influence to the kinetic rate of the double oxygen biology in lab scale reaction unit model.Temperature is higher, and biochemical reaction rate is faster.

(3) the utility model effective volume

To the utility model of periodical operation, reactant will reach certain level of response, or bacterium will reach the needed reaction times of finite concentration, only relevant with the speed of process, and irrelevant with the device size.To the utility model of periodical operation, its effective volume size is to be determined by the treatment capacity of reaction mass.If the time in a periodical operation operational cycle of the present utility model is T, have:

T=t+t _b………………………………（27）

In formula, t---reaction times, h;

T _b---overhead time, h.

Production task according to the rules, requiring the volume of material that this device should be processed within the unit time is Vo, and unit is L/h, and the effective volume of this device is:

V _R=V ₀(t+t _b)………………………………（28）

In formula, VR---device effective volume, L.

Therefore, should consider t overhead time _bsize, and then more reasonably determine the effective volume of device.

6. the utility model speed of reaction of operate continuously

(1) hydraulic detention time of device

Matrix (organism) is done and accounted, have: input+circulation=consumption+output

That is:

QC ₀+RQC _t=V _Rr _C+Q(1+R)C _t………………………………（29）

In formula, the flow of Q---reaction solution, m;

R---reflux ratio, i.e. Matter Transfer ratio or volume ratio;

Co---the concentration of water inlet mesostroma, mg/L;

The concentration of Ct---phegma and water outlet mesostroma, mg/L;

V _r---the effective volume of device, L:

Rc---the speed of reaction in biochemical kinetics, mg/(L.h).

Can be obtained fom the above equation:

show the true residence time of a certain micro unit, unit is h, by formula (21) substitution formula (30), can obtain the expression formula of the hydraulic detention time T of auto levelizer:

$\mathrm{\&tau;}=\frac{Q(C_0-C_t)}{\mathrm{kcX}\&CenterDot;Q}=\frac{C_0-C_t}{\mathrm{kcX}}...\left(31\right)$

(2) device effective volume

Can obtain the utility model effective volume V by formula (30) and formula (21) _rfor:

$V_R=\frac{Q(C_0-C_t)}{\mathrm{kCX}}...\left(32\right)$

In formula, V _r---device effective volume, L.

(3) reflux ratio

If reflux ratio is R, the returned sluge flow is RQ.Under steady state conditions, the device bacterium is accounted:

Input+internal circulating load+increment=work output

That is:

QX ₀+RQX _r=Q(1+R)X _t………………………………（33）

In formula, Q---reaction solution flow, L;

X _o---bacterial concentration in water inlet, mg/L;

Xr---bacterial concentration in phegma, mg/L;

R---rate of bacterial growth, mg/(L.h);

X ₁---bacterial concentration in the device water outlet, mg/L.

$R=\frac{X_1}{X_r-{\mathrm{<figure-callout\; id="1"\; label="X"\; filenames="HDA00003301877200011.png,HDA00003301877200031.png"\; state="\{\{state\}\}">X</figure-callout>}}_1}...\left(34\right)$

Visible, in device, bacterial concentration (sludge concentration) is closely related with the value of reflux ratio, useful volume and mud enrichment factor.Therefore it is most important to choose suitable reflux ratio in design process.

7. the utility model is applied in the simultaneous denitrification dephosphorization experiment

In operating parameter: the aerobic zone reaction times is 4-6h, and MLSS is controlled in the scope of 2500-7000mg/L, and aerobic zone DO gets 2-5mg/L, and circulating reaction district DO gets 0.3-1.0mg/L, and the pH value is 7-7.8, and reflux ratio is 2.5-5.Substantially realized removing organic pollutant, ammonia nitrogen and phosphorus.

Its characteristic is: under with aerobic zone HRT=6h operational conditions, intake and move continuously, (1) when influent COD is the 300mg/L left and right, the COD of water outlet can be reduced to 13mg/L, the clearance of COD can reach 95% left and right, (2) when the ammonia nitrogen of water inlet is 118.7mg/L, the ammonia nitrogen concentration of water outlet is 5-15mg/L, and the clearance of ammonia nitrogen reaches more than 93%; (3) when the phosphate concn of water inlet be about 10.5mg/L constantly, the phosphate concn of water outlet is also at 2.7mg/L left and right, removal rate of phosphate average out to 73.8%.Adopt respectively SEM and opticmicroscope to carry out the biophase observation to biological particles in system and suspension microorganism, microbial components in the discovery system is complicated and grow fine, and multiple-microorganism coexists mutually.Oxygen-starved area exists a large amount of suis, tyrothricin and a small amount of thread fungus, and there is a large amount of stock bacterium in aerobic zone, and thread fungus and a small amount of coccus also have the protozoon metazoans such as many ciliates, nematode to exist in suspended sludge.

The utility model is to SS, BOD ₅, CODcr, ammonia nitrogen, total nitrogen and phosphorus removal:

(1) removal of SS

In the Sewage treatment systems water outlet, concentration of suspension not only relates to water outlet SS index, the BOD in water outlet ₅, the indexs such as CODCr, TP are also relevant with it.Because form the main component of water suspension, be the active sludge flco, the organic component of itself is just high, and organism itself is phosphorous, so higher goes out the BOD that water suspension content can make water outlet ₅, CODCr and TP increase.So it is the most basic controlling the SS index of Sewage treatment systems water outlet, is also very crucial.Under the condition of select appropriately in processing scheme, the processing parameter value is reasonable and optimization monomer structures design, can make water outlet SS index meet the requirement of national standard fully.The rhizome system that the utility model is powerful with plant and ecological filler complete the deodorizing dephosphorization denitrogenation of waste water and process, and quiescent setting is compared the mode of continuous precipitation, can guarantee the SS of lower concentration water outlet.

(2) BOD ₅removal

In sewage, the removal of BOD5 is adsorption and the metabolism by microorganism, to the BOD5 degraded, utilizes BOD5 to synthesize new cell, then mud is separated with water, thereby completes the removal of BOD5.Microorganism in active sludge, under the condition of aerobic, for the synthesis of new cell, carries out katabolism by another part organism in order to obtain the synthetic required energy of cell by a part of organism in sewage, and its final product is CO ₂and H ₂the stable materials such as O.In anabolism and catabolic process, dissolved organic matter (as low molecular organic acids etc.) directly enters cell interior and is utilized, but not at first dissolved organic matter is attracted to the microorganism surface, enters cell interior after then being hydrolyzed by extracellular enzyme and is utilized.As can be seen here, the aerobic metabolism of microorganism all works to the dissolved organic matter in sewage and non-solubility organism, and meta-bolites is harmless stable material, and therefore, the remaining BOD5 concentration that can make to process in rear sewage is very low.

In the utility model, by active bio flora digestion organic pollution materials, improved natural purifying ability, to reach the purpose purified water.Except the bacterium of finding in the traditional active sludge system, also inoculation has other 2000-3000 kind of plant, animal and microorganism.The organism of inoculating has the ability that the oneself synthesizes and absorb sun power, and this ability has guaranteed that pollutent obtains biological degradation to greatest extent.

(3) removal of CODcr

Principle and BOD that in sewage, CODcr removes ₅basic identical.

The clearance of Sewage treatment systems CODcr, depend on the biodegradability into water, and the composition of its sewage is relevant.For sanitary sewage, its BOD ₅/ CODcr>=0.5, the good biodegradability of sewage, water outlet CODcr value can be controlled at lower level, can meet the demands.

The sewage that the utility model is processed mainly be take sanitary sewage as main, its BOD ₅/ CODcr value is 0.5, and sewage has biodegradability preferably, adopts second-stage treatment technique to meet the demands.

(4) removal of ammonia nitrogen

Sewage is removed the ammonia nitrogen method and is mainly contained physico-chemical processes and the large class of biological process two, and in the sanitary sewage disposal industry, biological process removal ammonia nitrogen is main flow, is also economical in sanitary sewage disposal and method commonly used.

Nitrogen is the indispensable integral part of protein, therefore extensively is present among sanitary sewage.In raw waste water, nitrogen exists with the form of NH4+-N and organonitrogen, and the nitrogen of these two kinds of forms is combined and is referred to as kjeldahl nitrogen, with TKN, means.And the NOx-N(in raw waste water comprises nitrite and nitrate) content seldom, almost nil.These multi-form nitrogen are referred to as total nitrogen (TN).

Nitrogen is also one of element formed microorganism, and a part enters nitrogen in cell paste will be with excess sludge-rise and remove from water.This part nitrogen amount is about removed BOD ₅5%, be 12% of microorganism wt, account for 4% of sewage treatment plant residual active sludge amount.

When organism is oxidized, the organonitrogen in sewage also is oxidized to ammonia nitrogen, in the situation that dissolved oxygen is sufficient, load is lower, mud is longer age, further is oxidized to nitrite and nitrate, usually is referred to as nitrifying process.Its reaction equation is as follows:

NH ₄ ⁺+1.5O ₂→NO ₂ ^-+2H ⁺+H ₂O

NO ₂ ^-+0.5O ₂→N0 ₃ ^-

The first step reaction completes by Nitrosomas, and the second step reaction completes by nitrifier, and total reaction is:

NH ₄ ⁺+2O ₂→NO ₃ ^-+2H ⁺+H ₂O

Therefore, adopt the plant of flourishing rhizome to absorb ammonia nitrogen, clearance is high.

(5) removal of total nitrogen

Ammonia nitrogen in waste water is oxidized to nitrate through nitrification, although the concentration of ammonia nitrogen reduces, the total nitrogen in waste water is not reduced, and for reducing total nitrogen, just must remove the nitrate nitrogen in waste water.The most ripe technique is denitrification at present,, under anoxia condition, under the effect of facultative denitrifier (denitrifying bacteria), nitrate nitrogen is reduced into to nitrogen and overflows, thereby reduce the total nitrogen in waste water.The methyl alcohol of take is example as carbon source, and its reaction equation is as follows:

6NO ₃-+2CH ₃OH→6NO ₂-+2CO ₂+4H ₂O

6NO ₃-+3CH ₃OH→3N ₂+3CO ₂+3H ₂O+6OH-

The utility model is supported plant 4 by many group water is set in contact-oxidation pool 2, absorbs ammonia nitrogen with the flourishing rhizome of plant, thereby improves the clearance of total nitrogen.

(6) removal of phosphorus

Biological phosphate-eliminating be polyP bacteria in sewage under anaerobic, be subject to constraining and discharge phosphoric acid salt body in, generate energy is in order to absorb the fast degradation organism, and is converted into PHB(and gathers the β hydroxybutyric acid) store.When these polyP bacterias enter the PHB generate energy that aerobic condition lower time just degrades in body and store, for the synthetic of cell with inhale phosphorus, form the phosphorus containing sludge of high density, discharge system with excess sludge, thereby reach the purpose of dephosphorization.

The rhizome that the utility model utilizes water to support plant 4 prosperities absorbs phosphorus, in operational process, without power consumption, avoids the use of chemical substance fully, and maintenance cost is only that expense is added in the maintenance costs of plant and the replacing of broken filler.

If, to being sealed deodorizing between sludge dewatering, can increase investment, and management is also inconvenient.Do not establish preliminary sedimentation tank because of the utility model, there is no raw sludge, mud residence time in sludge sump is short, and carries out aerobic sigestion, and sealing treatment, and the stink distributed can weaken to some extent.Arrange separately between sludge dewatering and between fortune mud, note at ordinary times strengthening management, the mud of generation press dry outward transport in time, and the impact of stink can be controlled in the scope of bearing.If can adopt enclosed centrifugal drier, more can weaken distributing of stink.

In the utility model, obvious by the plant action deodorising effect, and can improve landscape effect.Sewage stink after processing by deodorizing district A reduces greatly.

Adopt the utility model transformation or newly-built sewage work's external form view beautiful.Outside also can have greenhouse, and greenhouse adopts light steel skeleton structural glass chamber; In system, be ecoscape, the nitrated device deodorizing of built-in stereo ecological outer circulation; Greenhouse can guarantee that plant and other organism keep vigorous vigor under preferred ambient temperature, and this ecological sewage treatment facility, can build remote districts in, can be applicable to strict high-grade community, and each community's environmental protection is had to positive effect.

8. the comparison of application the utility model and traditional technology in sewage work's upgrading

Referring to table 1, the utility model and MBR technique, contact oxidation technology are relatively, be no matter that effluent quality, stable effluent quality, Nitrogen/Phosphorus Removal, deodorizing subtract carbon effect, excess sludge index or other indexs of correlation, working cost, all be better than other two kinds of techniques.As can be seen here, adopt the wastewater effluent water quality after the utility model is processed good, can stablize the country-level A standard that reaches, meet middle water reuse requirements such as afforesting, flush the toilet, also can be used as the ecoscape make up water.Simultaneously, particularly have extremely excellent denitrification effect, the water outlet ammonia nitrogen can reach surface water II generic request, has overcome the low defect of other technique denitrification effects.It has good ecological purification environment, and the resistance to overload shock ability is strong, stable effluent quality, and excess sludge is few.And not only effluent quality is good, and the external form view is beautiful, and operating automation degree is high, substantially can realize unmanned.

The utility model adopts integrated technology, and the facility characteristics of compact layout, can select suitable element number to carry out layout footprint as required, and due to integrated setting, construction investment and operational and administrative expenses are lower.

The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.

Claims (9)

1. less energy-consumption, smart three-dimensional ecology are from the nitrated device of reflux cycle, it is characterized in that, by Sewage treatment systems Central Plains anoxic pond or Aerobic Pond is transformed into to anoxic pond, described anoxic pond top is provided with the roof solar power generation assembly, periphery arranges aerogenerator, by master controller, controls; Be provided with at least one stereo ecological in described anoxic pond from the nitrated unit of reflux cycle, each described stereo ecological is divided into ecological deodorizing district and circulation nitration reaction district from top to bottom from the nitrated unit of reflux cycle, described circulation nitration reaction district from-inner-to-outer is divided into aerobic zone, aerobic area, settling region and oxygen-starved area, described ecological deodorizing district is positioned at top, described circulation nitration reaction district, and in it, plantation has water to support plant; Described circulating reaction district is arranged in a circulating box, and this circulating box central zone is described aerobic zone, in described aerobic zone, is provided with aeration element, and top is communicated with described aerobic area, and bottom is provided with the internal recycle water inlet; Described aerobic area is to form around the outside of described aerobic zone; Described settling region is comprised of the outside around described aerobic area, and bottom, described settling region is communicated with described aerobic area bottom, and upper end, described settling region is provided with header; Described oxygen-starved area vertical surrounding is located at the zone beyond described aerobic area, and upper end is communicated with described anoxic pond, and bottom is communicated with described aerobic zone; Described circulating box bottom is provided with the mud thrust-augmenting nozzle; Described master controller also is electrically connected with flow director, dissolved oxygen controller, temperature regulator and and sludge concentration controller.

2. less energy-consumption according to claim 1, smart three-dimensional ecology, from the nitrated device of reflux cycle, is characterized in that, the volumetric ratio of described aerobic zone and described aerobic area is 1:0.4; The volumetric ratio of described aerobic zone and described oxygen-starved area is got 1:3.

3. less energy-consumption according to claim 1, smart three-dimensional ecology are from the nitrated device of reflux cycle, it is characterized in that, described deodorizing district arranges the plant basket, described water is supported plant growing in described plant basket, described circulating box is fixed in described anoxic pond, be positioned at described plant basket bottom, described water is supported plant root and is extended described circulating box inside.

4. less energy-consumption according to claim 1, smart three-dimensional ecology are from the nitrated device of reflux cycle, it is characterized in that, described deodorizing district arranges the plant basket, described water is supported plant growing in described plant basket, described circulating box suspends and is arranged in described anoxic pond, be positioned at described plant basket bottom, described water is supported plant root and is extended described circulating box inside.

5. less energy-consumption according to claim 4, smart three-dimensional ecology are from the nitrated device of reflux cycle, it is characterized in that, one suspension device is set, connects the periphery of described plant basket bottom and described circulating box upper end, described plant basket and described circulating box are suspended and be arranged in described anoxic pond.

According to the described less energy-consumption of claim 1-5 any one, smart three-dimensional ecology from the nitrated device of reflux cycle, it is characterized in that, be provided with biologic packing material in described circulating box, fix and, in described circulating box, form described aerobic zone by the filler anchor.

According to the described less energy-consumption of claim 3-5 any one, smart three-dimensional ecology from the nitrated device of reflux cycle, it is characterized in that, described plant basket upper end arranges and can make each stereo ecological interconnective unit connects draw-in groove from the nitrated unit of reflux cycle.

According to the described less energy-consumption of claim 3-5 any one, smart three-dimensional ecology from the nitrated device of reflux cycle, it is characterized in that, described circulating box internal upper part has interior flow deflector, dividing plate and the outer flow deflector that described plant basket bottom is fixed in parallel vertical setting and its upper end, described interior flow deflector is separated described aerobic area and described aerobic zone, and lower end bends and extends to described aeration element in the same level position; Described dividing plate is separated described aerobic area and negative area, and lower end extends to described aerobic area 2/3 position; Described outer flow deflector is separated described settling region and described oxygen-starved area, and lower end bends and extend to the level attitude lower than described aeration element.

According to the described less energy-consumption of claim 3-5 any one, smart three-dimensional ecology from the nitrated device of reflux cycle; it is characterized in that; be provided with the deodorizing filler of supporting the rhizome of plant and adsorbable, degrading microorganism, absorption foul smell for supporting water in described plant basket, described deodorizing filler is gac, haydite or photocatalyst new composite carbon material.

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