CN203613069U - Process system for synergistically removing Fe, Mn and ammonia nitrogen in composite micro-polluted source water - Google Patents
Process system for synergistically removing Fe, Mn and ammonia nitrogen in composite micro-polluted source water Download PDFInfo
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- CN203613069U CN203613069U CN201320699810.1U CN201320699810U CN203613069U CN 203613069 U CN203613069 U CN 203613069U CN 201320699810 U CN201320699810 U CN 201320699810U CN 203613069 U CN203613069 U CN 203613069U
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Abstract
The utility model discloses a process system for synergistically removing Fe, Mn and ammonia nitrogen in composite micro-polluted source water on account of the condition that surface water is treated by a hybrid reaction and precipitation system, an auxiliary chemical oxidization system, an air oxidation system, a filter system and a disinfection system and underground water treated by systems which are completely consistent with surface water treatment systems excluding the hybrid reaction and precipitation system. The process system reasonably and effectively integrates various technologies of mass transfer oxygenation, natural oxidization, chemical oxidization, intercepting filtration, physicochemical absorption, contact catalysis/ biological oxidation and the like, so that turbidity, chromaticness, Fe, Mn and ammonia nitrogen in the composite micro-polluted source water can be effectively and synergistically removed; the process system not only has the technical advantages of high removal efficiency and treatment speed, small influence of environmental factors, no side effect, simplicity in operation and maintenance and the like, but also has the economic advantages of small engineering investment and low running cost; and accordingly, the process system not only is suitable for designing a new water plant, but also realizes upgrading and improvement of a conventional water plant easily.
Description
Technical field
The utility model belongs to technical field of drinking water treatment, relate generally to the collaborative technological method of removing of Fe, Mn and ammonia nitrogen in a kind of compound micro-polluted source water, Fe, Mn and the collaborative technique of removing of ammonia nitrogen in the compound micro-polluted source water of be specifically related to that a kind of technology is integrated, flow process brief, highly-efficient treatment, system are complete.
Background technology
In recent years, China's water pollutes and is on the rise, drinking water source is also subject to pollution in various degree, the frequent appearance of compound micro-pollution such as drinking water source Fe in all parts of the country, Mn and ammonia nitrogen especially in recent years, drinking-water quality has been caused safely to direct threat, and conventional drinking water purification process has been difficult to guarantee to process the supply up to standard of rear tap water, therefore, in compound micro-polluted source water, effective removal of Fe, Mn and ammonia nitrogen combined pollutant has become one of major issue that current Drinking Water in China safety control faces.
At present, having more than 400 using underground water as main resource of water supply in 655 cities, the whole nation is individual, accounts for 61% of city sum.But along with the develop rapidly of Chinese national economy, Groundwater pollution becoming serious, the particularly northern area higher to underground water degree of dependence, be faced with the severe situation that groundwater reserves decline, water quality deterioration, water load rise; And the Fe of underground water, Mn and ammonia and nitrogen pollution have become comparatively common phenomenon, according to Chinese Ministry of Environmental Protection, 1817 groundwater sources in the whole nation are carried out to monitoring and evaluation discovery: Fe, Mn and ammonia nitrogen index exceeding standard rate is respectively 15.58%, 12.56% and 10.63%, in the front three of all investigation indexs.
Because municipal sewage treatment is relatively ineffective, and agriculture production is used chemical fertilizer in a large number, earth's surface risk of drinking water pollution is and increases the weight of trend, the river section that does not reach III class water quality only accounts for 35.8%, and this has made centralized earth's surface, China most cities drinking water source or progressively river type has been substituted for reservoir, lake type; Investigation shows, at present reservoir, account for 40.2% of the centralized drinking water source of surface water ground lake type drinking water source.And reservoir and water body in lake have the features such as capacity is large, the depth of water large, poor fluidity because of it, easily form water body layering, lower floor's Dissolved Oxygen in Water is reduced, in anoxic or anaerobic state, cause a large amount of releases of pollutent in bottom, finally cause that in bottom and intermediate water, the seasonality of Fe, Mn and ammonia-nitrogen content exceeds standard, as Laoshan reservoir, Kweiyang Ah Kazakhstan's reservoir and Gutian Area, Fujian Province Reservoir etc.
As can be seen here, it is comparatively common that urban drinking water water source is subject to the phenomenon of Fe, Mn and ammonia nitrogen combined pollution.Research shows, when concentration of iron is during higher than 0.5mg/L, water body can produce significantly smells taste and color, affects sense organ; Long-term manganese excess intake, may cause Digestive tract and skeletal diseases; And ammonia nitrogen concentration exceeds standard and can cause waterworks sterilizing process disinfectant consumption to increase and produce disgusting smelling and taste.
At present, comparatively ripe for the treatment technology of Fe, Mn and ammonia nitrogen Single Pollution index, rarely have report but remove technique for compound micro-pollution synergetic that Fe, Mn and ammonia nitrogen exceed standard simultaneously.Current, in water, ferrimanganic removal is mainly after first by water, ionic oxide formation is high price at a middle or low price, then is filtered and realized separation by filtering layer.And common ammonia nitrogen processing method mainly contains Adsorption method, break point chlorination method and biological denitrificaion method etc., wherein Adsorption method is applied less because of shortcomings such as its Construction and operation cost are high and operational management difficulty is large; Though break point chlorination can be removed ammonia nitrogen in water, the generation risk that the increase of chlorine-throwed quantity easily causes disinfection byproduct (DBP) strengthens, thereby causes water quality safety to decline; Adopt the biological denitrificaion methods such as biological contact oxidation process or BAF to be commonly used for the biological pre-treatment process of setting up before conventional treatment process, though can reach 80% to the clearance of ammonia nitrogen in tap water, ferrimanganic is had to certain removal effect (less than 50%) simultaneously, but the impact of the factors such as its technical process is long, temperature influence is large, the cycle of operation is long, investment is large, working cost is higher, operational management difficulty is large, applies it and is extremely restricted.
Therefore, instantly a technical problem in the urgent need to address is exactly: how to propose a kind of water technology or system, to solve the problem existing in existing Technology, can work in coordination with Fe, Mn and the ammonia nitrogen effectively removed in compound micro polluted source, can shorten again processing technological flow, reduce processing cost, save construction investment and predigested running management.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of new system of removing Fe, Mn and ammonia nitrogen in compound micro polluted source of working in coordination with is provided, both can realize the catalyzed oxidation of low price ferrimanganic had been removed, can realize again the short flow process of ammonia nitrogen, efficiently remove, thereby reach with low cost, investment save and the simple object of operational management.
To achieve these goals, the technical scheme that the utility model is taked is as follows:
In a kind of compound micro-polluted source water, the collaborative process system of removing of Fe, Mn and ammonia nitrogen, comprises hybrid reaction system, for surface water is mixed, reaction, precipitation process; Chemistry assisted oxidation system, for the lower valency ferrimanganic of process hybrid reaction system surface water after treatment is carried out to chemical oxidation reaction, and for underground water middle or low price state ferrimanganic is carried out to chemical oxidation reaction; Atmospheric oxidation system, be used for passing through successively hybrid reaction system and chemical assisted oxidation system surface water after treatment, or carry out oxidizing reaction through chemical assisted oxidation system underground water after treatment, atmospheric oxidation system is divided into aero-mechanical oxygenating system and air natural oxygenating system, aero-mechanical oxygenating system for the positive mechanical oxygenation of surface water water treatment system with Fe-Mn oxidation is become to nascent state ferro manganese composite oxides, air natural oxygenating system for the natural oxygenation of Groundwater treatment system with Fe-Mn oxidation is become to nascent state ferro manganese composite oxides; Filtering system, for removing Fe, Mn, ammonia nitrogen, suspended substance and the particulate matter through atmospheric oxidation system surface water and groundwater after treatment; Sterilisation system, for killing the pathogenic micro-organism through filtering system surface water and groundwater after treatment, finally exports water quality up to standard;
Wherein, surface water is connected with hybrid reaction system, chemistry assisted oxidation system is connected with hybrid reaction system and underground water respectively, surface water through the processing of chemical assisted oxidation system is connected with aero-mechanical oxygenating system, underground water through the processing of chemical assisted oxidation system is connected with air natural oxygenating system, aero-mechanical oxygenating system is connected with filtering system respectively with air natural oxygenating system, filtering system comprises filter tank, back-purge system and media regeneration system, and back-purge system is connected with filter tank respectively with media regeneration system; Filtering system is connected with sterilisation system.
The utility model also has following other technologies feature:
Described hybrid reaction system comprises mixing pit, reaction tank and settling tank, surface water directly enters mixing pit in hybrid reaction system and carries out mixing of water body and coagulating agent, then flow into reaction tank and carry out the larger floc particle of abundant flocculation reaction formation, remove floc particle and the suspended substance in water body through the precipitating action of settling tank again, settling tank is connected with aero-mechanical oxygenating system by rising pipe.
Described chemical assisted oxidation system is made up of dispensation apparatus, administration device and drug tube, and administration device is connected with dispensation apparatus, and administration device is connected with the water inlet pipe of air natural oxygenating system with aero-mechanical oxygenating system respectively by drug tube.
Described aero-mechanical oxygenating system can be divided into two kinds of blast aeration system and mechanical aeration systems according to the difference of oxygenation mode.
Described blast aeration system comprises aeration tank, gas pipe line, aerator, air pressurization device and gas distributing pipeline, be provided with gas distributing pipeline in inside, aeration tank, aerator is fixed on gas distributing pipeline top, and aerator is connected with air pressurization device by gas pipe line.
Described mechanical aeration system is divided into surface aeration, three kinds of aeration and jet-flow aerations under water, described surface aeration, aerating system is by formations such as aerator, transmission shaft, electric motor, step-down gear, aeration tanks under water, the inner aerator of installing in aeration tank, aerator is connected with step-down gear with electric motor by transmission shaft.Described jet-flow aeration system is made up of force (forcing) pump, jet pipe and aeration tank.
Described air natural oxygenating system is divided into upwards the three kinds of modes of spraying, spray or drop downwards, and described upwards sprinkling system comprises sprays pond, spray line, flusher, and the bottom of spraying pond is equipped with spray line, and flusher is installed on spray line top.
Described filter tank adopts air-water backwashing form, and the filtrate in filter tank adopts common homogeneous quartz sand filter media or ceramic grain filter.
Described back-purge system comprises backwash pump, air pressurization device, backwashing water pipeline, gas pipe line, suction well, between backwash pump and filter tank, be connected by backwashing water pipeline, air pressurization device also and between filter tank is connected by gas pipe line;
Described media regeneration system comprises dosing facility and storage medicine device, and dosing facility is connected with storage medicine device, and dosing facility is connected with filter tank;
Described sterilisation system comprises that metering adds facility and storage medicine facility, and metering adds facility and is connected with the outlet conduit in storage medicine facility and filter tank respectively.
Further, described air pressurization device is air compressor machine or gas blower.
The structure formation of described aerator is tubular type, disc type, bell-jar or plate armature.
More than the described required overbottom pressure of air natural oxygenating system reaches 0.10MPa.
Described filter tank filtering velocity is 7～14m/h, and thickness of filter bed is 1.2～1.6m, and be 1～4d filtration cycle.
The described media regeneration system regeneration cycle is 1～3 year.
Mixing pit in described hybrid reaction settling system is that mechanically mixing or waterpower are mixed, and reaction tank is grid, grizzly bar, dividing plate or flap form, and settling tank is advection, inclined tube or swash plate or advection and inclined tube, or the array configuration of advection and swash plate.
Collaborative removal process system of the present utility model is integrated rationally and effectively mass transfer oxygenation, natural oxidation, chemical oxidation, hold back collaborative turbidity, Fe, Mn and the ammonia nitrogen of removing in compound micro polluted source of the multiple technologies such as filtration, physical and chemical adsorption, contact catalysis/bio-oxidation, compared with existing treatment technology, advantage is as follows: have removal efficiency high (Fe, Mn and ammonia nitrogen removal 95% left and right), processing speed fast (7-14m/h filtering velocity can effectively be removed), be subject to such environmental effects little, the technical superiority such as do not have side effects, operational management is simple; There are the economic advantages such as construction investment is little, running cost is low; For surface water treatment process, save preoxidation system, shorten technical process, reduce the generation risk of disinfection byproduct (DBP), improve water quality safety; For groundwater treatment technique, effectively utilize the pressure more than needed of the original water pump of underground water to carry out nature oxygenation realization Fe-Mn oxidation and water body oxygenation mass transfer at a low price.This utility model system is not only applicable to the design of new water factory, and is easy to realize the upgrading of existing water factory; Especially for the upgrading of existing water factory, only need to set up atmospheric oxidation system and chemical assisted oxidation system, just can effectively improve the removal usefulness of Fe in water, Mn and ammonia nitrogen, guarantee effluent quality.
Accompanying drawing explanation
Fig. 1 is system architecture schematic diagram of the present utility model.
Fig. 2 is the system architecture schematic diagram of the utility model embodiment.
Fig. 3 is water factory of the Northwest reconstruction and extension project water cleaning systems schematic diagram in specific embodiment of the utility model.
Being labeled as on accompanying drawing: a, surface water; B, underground water; C, hybrid reaction system; D, chemical assisted oxidation system; E, atmospheric oxidation system; E-1, aero-mechanical oxygenating system; E-1 ', blast aeration system; E-1 ", mechanical aeration system; E-2, air natural oxygenating system; E-2 ', sprinkling system upwards; F, filtering system; G, sterilisation system; H, back-purge system; I, media regeneration system; 1, mixing pit; 2, reaction tank; 3, settling tank; 4, dispensation apparatus; 5, administration device; 6, drug tube; 7, aeration tank; 8, gas pipe line; 9, aerator; 10, air pressurization device; 11, gas distributing pipeline; 12, filter tank; 13, filtrate; 14, backwashing pump; 15, suction well; 16, backwashing water pipeline; 17, dosing facility; 18, storage medicine device; 19, metering adds facility; 20, storage medicine facility; 21, spray pond; 22, spray line; 23, flusher; 24, water pump.
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Embodiment
The technical conceive that the utility model is dealt with problems is: for Surface Water Treatment Technology, compound micro-polluted source water is after the mixing of hybrid reaction settling system, reaction, precipitation process, first utilize chemical assisted oxidation system that lower valency ferrimanganic is carried out to rapid chemical oxidation, the oxide compound that makes it to form can be attached to filter material surface, thereby forms filter material surface active filter film; Carry out abundant mass transfer oxygenation through atmospheric oxidation system again, and form nascent state ferro manganese composite oxides by oxygenizement, collaborative turbidity, colourity, Fe, Mn and the ammonia nitrogen of removing in compound micro polluted source of the effects such as filtration, physical and chemical adsorption, contact catalysis/bio-oxidation of holding back that then utilizes filtering system, final outflow water can meet " national drinking water sanitary standard " and (GB5749-2006) stipulate after sterilization.The front end of Surface Water Treatment Technology can not arrange preoxidation system, object is to avoid on the one hand water body middle or low price ferromanganese ion to be removed in the coagulating sedimentation stage because preoxidation process forms high price iron and manganese oxides, cannot form active oxidation film at the filter material surface of follow-up filtration process, losing the function of its catalytic elimination ammonia nitrogen, is to reduce the generation risk of disinfection byproduct (DBP) to improve its water quality safety on the other hand.
System of the present utility model comprises hybrid reaction system c, for surface water a is mixed, reaction, precipitation process, by to after the mixing of coagulating agent and former water, then carry out flocculation reaction through reaction tank, reach effective removal of floc particle finally by the precipitating action of settling tank.
Chemistry assisted oxidation system d, for the lower valency ferrimanganic of process hybrid reaction system c surface water after treatment is carried out to chemical oxidation reaction, and for underground water b middle or low price state ferrimanganic is carried out to chemical oxidation reaction.Chemistry assisted oxidation system d is mainly before filter material surface forms active filter film, by adding chemical oxidizing agent oxidizing water state ferrimanganic at a middle or low price, the oxide compound that makes it to form can be attached to filter material surface, accelerate the formation of filter material surface active filter film, guarantee after atmospheric oxidation nascent state ferro manganese composite oxides in the absorption on filter membrane surface and efficiently adhere to.
Atmospheric oxidation system e, be used for passing through successively hybrid reaction system c and chemical assisted oxidation system d surface water after treatment, or carry out oxidizing reaction through chemical assisted oxidation system d underground water after treatment, atmospheric oxidation system e is divided into aero-mechanical oxygenating system e-1 and air natural oxygenating system e-2, aero-mechanical oxygenating system e-1 is for the positive mechanical oxygenation and the ferro manganese composite oxides that Fe-Mn oxidation is become to nascent state of surface water water treatment system, main by some mechanical means, force to accelerate to water body oxygenation, make water body and oxygen obtain effective mass transfer process that fully contacts to realize oxygen molecule, and realize the oxidation process of lower valency ferrimanganic, aero-mechanical oxygenating system can be divided into blast aeration system e-1 ' and mechanical aeration system e-1 according to the difference of oxygenation mode " two kinds.Described blast aeration system e-1 ' is mainly made up of aeration tank, gas pipe line, aerator, air pressurization device, gas distributing pipeline etc., described air pressurization device can adopt air compressor machine or gas blower, its pressure is mainly definite according to the aeration tank depth of water, and the structure formation of described aerator can adopt tubular type, disc type, bell-jar or flat.Described mechanical aeration system e-1 " can be divided into surface aeration, three kinds of aeration and jet-flow aerations under water; and described surface, aerating system is all mainly made up of aerator, transmission shaft, electric motor, step-down gear, aeration tank etc. under water, and it is vertical etc. that described aerator can be divided into rotary brush type, rotating disc type, submersible centrifugal, deep water type, the umbrella shape of falling; Described jet-flow aeration system is mainly made up of force (forcing) pump, jet pipe and aeration tank etc.
Air natural oxygenating system e-2 for the natural oxygenation of Groundwater treatment system with Fe-Mn oxidation is become to nascent state ferro manganese composite oxides, mainly utilize the overbottom pressure after underground water water pump promotes water body that water body is upwards sprayed, spray or drop downwards, can make water body form vaporificization or water droplet, and then realization carries out fully contacting to reach nature oxygenation with air, air natural oxygenating system e-2 can effectively utilize the pressure more than needed of the original water pump of underground water, not only can make water body reach droplet state to improve water body oxygenation mass transfer and to realize ferrimanganic natural oxidation at a low price, and can remove and individually descend the microbubble containing in source water to ensure the normal operation in follow-up filter tank, and effectively reduce running cost.
Filtering system f, for removing through atmospheric oxidation system e surface water after treatment or underground water along with nascent state ferro manganese composite oxides, ammonia nitrogen and the dissolved oxygen of water body constantly adsorb and be attached to after active filter film, recycle collaborative Fe, Mn and the ammonia nitrogen of removing in water body of the effects such as its physical and chemical adsorption, contact catalysis/bio-oxidation; Effectively remove suspended substance and the particulate matter in water by the filteration of holding back of filtrate simultaneously.Described filtering system is mainly made up of filter tank, back-purge system and media regeneration system etc.
Sterilisation system g, for killing the pathogenic micro-organism through filtering system f surface water and groundwater after treatment, adds by metering the mode that facility adds sterilizing agent continuously water quality is carried out disinfection, and finally exports water quality up to standard.Groundwater treatment system can not established hybrid reaction settling system, and former water can effectively utilize the pressure more than needed of the original water pump of underground water directly to enter atmospheric oxidation system to carry out mass transfer oxygenation, and follow-up system is identical with Surface Water Treatment Technology.
As depicted in figs. 1 and 2:
Surface water a is connected with hybrid reaction system c, chemistry assisted oxidation system d is connected with hybrid reaction system c and underground water b respectively, the surface water a processing through chemical assisted oxidation system d is connected with aero-mechanical oxygenating system e-1, the underground water b processing through chemical assisted oxidation system d is connected with air natural oxygenating system e-2, aero-mechanical oxygenating system e-1 is connected with filtering system f respectively with air natural oxygenating system e-2, filtering system f comprises filter tank 12, back-purge system h and media regeneration system i, back-purge system h is connected with filter tank 12 respectively with media regeneration system i, filtering system f is connected with sterilisation system g.
Take surface water a treatment system as example, in compound micro-polluted source water, the collaborative process system of removing of Fe, Mn and ammonia nitrogen mainly comprises hybrid reaction system c, chemical assisted oxidation system d, atmospheric oxidation system e, filtering system f, sterilisation system g, between each system, is connected by pipeline or channel.Wherein filtering system f is mainly made up of filter tank 8, back-purge system h and media regeneration system i.
In the time that system is normally moved, former water directly enters mixing pit 1 in hybrid reaction system c and carries out mixing of water body and coagulating agent, then flow into reaction tank 2 and carry out the larger floc particle of abundant flocculation reaction formation, then remove floc particle and the suspended substance in water body through the precipitating action of settling tank 3.Mixing pit in hybrid reaction settling system c is that mechanically mixing or waterpower are mixed, and reaction tank 2 is grid, grizzly bar, dividing plate or flap form, and settling tank 3 is advection, inclined tube or swash plate or advection and inclined tube, or the array configuration of advection and swash plate.
Chemistry assisted oxidation system d is mainly made up of dispensation apparatus 4, administration device 5 and drug tube 6.In the process system starting period, administration device 5 adds chemical oxidizing agent on atmospheric oxidation system e inlet channel, and administration device 5 is connected by pipeline with dispensation apparatus 4, and is connected by drug tube 6 between atmospheric oxidation system e inlet channel.At system initial operating stage, move chemical assisted oxidation system d; After filter membrane maturation, chemical assisted oxidation system d can quit work, and former water directly enters atmospheric oxidation system e after hybrid reaction system c processes.
Settling tank 3 water outlets flow directly into atmospheric oxidation system e through pipeline or channel, and in this technique, air oxidation system is aero-mechanical oxygenating system e-1.Specifically, take blast aeration system e-1 ' as example, system is mainly made up of aeration tank 7, gas pipe line 8, aerator 9, air pressurization device 10, gas distributing pipeline 11; Blast numerous air-bubble by aerator 9 to water body in aeration tank 7, make to reach between bubble and water body and fully contact and realize oxygen transfer process, simultaneously by water body Fe-Mn oxidation nascent state ferro manganese composite oxides at a middle or low price.Wherein air pressurization device 10 provides source of the gas to aerator 9, be connected, and aerator 9 is arranged on the gas distributing pipeline 11 that is fixed on 7 inside, aeration tank between air pressurization device 10 and aerator 9 by gas pipe line 8.
Water body flows directly into the filter tank 12 in filtering system f after atmospheric oxidation system e oxygenation, the function in filter tank 12 is mainly to remove turbidity, colourity, Fe, Mn and the ammonia nitrogen in water body by the ripe active filter film acting in conjunction on filtrate 13 and filtrate 13 surfaces, and wherein filtrate 13 is arranged on 12 inside, filter tank.Filter tank form adopts air-water backwash filter, economic filtering velocity can be controlled in 7～14m/h, thickness of filter bed is controlled within the scope of 1.2～1.6m, can be controlled in filtration cycle within the scope of 1～4d, and the filtrate in described filter tank adopts common homogeneous quartz sand filter media or ceramic grain filter.
Back-purge system h is mainly made up of backwash pump 14, air pressurization device 10, backwashing water pipeline 16, gas pipe line 8, suction well 15, between backwash pump 14 and filter tank 12, be connected by backwashing water pipeline 16, air pressurization device 10 also and between filter tank 12 is connected by gas pipe line 8, wherein backwash pump 14 is absorbed water and provides backwashing water to filter tank 12 from suction well 15 by pipeline, and air pressurization device 10 provides back flushing air to filter tank 12.Water punching can (GB50013-2006) be carried out choose reasonable with thickness of filter bed according to " Code for design of outdoor water supply engineering " with air blasting intensity.Media regeneration system i utilizes the strong oxidation of oxygenant to peel off aging filter membrane to recover its original active ability, it is mainly made up of dosing facility 17, storage medicine device 18, dosing facility 17 respectively and filter tank 12, storage be all connected by pipeline between medicine device 18.The oxygenant of selecting in media regeneration system i can adopt hydrogen peroxide, dioxide peroxide and the ozone etc. with strong oxidizing property, and throwing amount is definite according to filtrate amount and oxygenant kind, and the regeneration period can be controlled in 1～3 year.
Filter tank water outlet finally by sterilisation system g sterilization laggard enter municipal waterworks supply water to user, sterilizing agent adds facility 19 by metering and adds continuously on the outlet conduit in filter tank 12, wherein sterilizing agent is stored in medicine facility 20, measures between the outlet conduit that adds facility 19 and store medicine facility 20, filter tank 12 and is all connected by pipeline.Sterilizing agent kind can adopt chlorine, clorox, dioxide peroxide etc., and dosage is according to aquifer yield, medicament kind and water outlet chlorine residue calculative determination.
In the time that former water is underground water source, can not establish hybrid reaction settling system c, former water directly enters atmospheric oxidation system e after pressurizeing by water pump 24, and in this system, air oxidation system e is air natural oxygenating system e-2.Specifically, so that upwards sprinkling system e-2 ' is as example, system comprises sprays pond 21, spray line 22, flusher 23 3 parts; Former water enters and is installed on the spray line 22 spraying in pond 21 after pressurization, more upwards sprays through flusher 23, can make water body reach droplet, carries out fully naturally contacting with air thereby realize.And then realization carries out fully contacting to reach nature oxygenation with air.Air natural oxygenating system can effectively utilize the pressure more than needed of the original water pump of underground water, not only can make water body reach droplet state to improve water body oxygenation mass transfer and to realize ferrimanganic natural oxidation at a low price, and can remove and individually descend the microbubble containing in source water to ensure the normal operation in follow-up filter tank, and effectively reduce running cost.Described air natural oxygenation form can adopt upwards to be sprayed, sprays downwards or drop mode, more than the required overbottom pressure of described air natural oxygenating system must reach 0.10MPa.Flusher 23 in whole air natural oxygenating system is installed on spray line 22.
Further illustrate the beneficial effects of the utility model and engineering application by two specific embodiments more below.
Embodiment 1: the Northwest's waterhead area quality of groundwater complex, pollutant kind is more, and ferrimanganic exceeds standard the most general, and there is the seasonal form phenomenon that exceeds standard in colourity, opacity and naked eyes visible etc., and ammonia nitrogen in water source also has the trend raising year by year.Applicant proposes and applies above-mentioned utility model technique according to its condition of water quality, and has carried out the pilot plant test of 1～2 year.Pilot test system design maximum processing capability 1m
3/ h, atmospheric oxidation adopts downward spray form; Filter post adopts homogeneous quartz sand filter media, and equivalent particle diameter is 1.20mm, nonuniformity coefficient K
80=1.38, thickness of filter bed 1.2m; Secondary oxidizer adopts potassium permanganate, and theoretical dosage press that ferromanganese ion concentration in water is definite, and actual throwing amount is theoretical dosage 90～110%.Pilot plant test result shows (referring to table 1), the utility model technique can effectively realize efficient collaborative removal of Fe, Mn and ammonia nitrogen in compound micro-polluted water, delivery turbidity and colourity be controlled at all the time 0.3NTU and 10 degree below, the average removal rate of three kinds of pollutents such as all the other Fe, Mn and ammonia nitrogen can reach respectively more than 98%, 99% and 95%, and effluent quality can meet " drinking water sanitary standard " requirement (GB5749-2006) completely.
The Inlet and outlet water water quality situation (filtering velocity 12m/h) of table 12011 year pilot plant test system
Embodiment 2: water factory of the Northwest adopts underground water source, because waterhead area is through exploitation for many years, be subject to the impact of the factors such as geologic media variation and ground environment pollution, iron, manganese index exceeding standard in underground water, part water supply well turbidity and ammonia nitrogen index seasonality exceed standard, existing simple chlorination technique can not control effectively to former water pollutant, need carry out reorganization and expansion to existing water factory.Water factory's reorganization and expansion scheme is determined and engineering design completes by utility model people, the above-mentioned utility model of process using.Extension Design is processed the water yield 120,000 m3/d, and clean water treatment structures comprise between aerated reaction pond, air-water backwash filter, biological activated carbon filter, dispensing chlorination house, clean water basin, back flushing etc.Wherein aeration tank and reaction tank adopt the form of building jointly; Aeration tank design utilizes the pressure more than needed of underground water water pipe, and former water flusher is set in pond, and to reach the object of spraying degassed, atomization, oxygenation, oxidation, flusher spraying altitude press 1.0m～1.5m and designed; Reaction tank is pressed 8min design, mainly in the time that seasonal turbidity exceeds standard, uses; Filter tank adopts cut sand filtrate air-water backwash filter, filtrate thickness 1.3m, and design filtering velocity 8.00m/h, presses 2d design filtration cycle; The medicament that assisted oxidation adds is potassium permanganate solution, and design maximum dosage is 2mg/L, and adding concentration is 4%.Water-purifying process design flow diagram as shown in Figure 3.
Above embodiment is only in order to illustrate the utility model and the described technical scheme of unrestricted the utility model, those skilled in the art is to be understood that, everyly do not depart from the improvement of technical solutions of the utility model or be equal to replacement, all should be encompassed in claim scope of the present utility model.
Claims (9)
1. the collaborative removal system of Fe, Mn and ammonia nitrogen in compound micro-polluted source water, is characterized in that, comprises hybrid reaction system (c), for surface water (a) is mixed, reaction, precipitation process, chemistry assisted oxidation system (d), for the lower valency ferrimanganic of process hybrid reaction system (c) surface water after treatment is carried out to chemical oxidation reaction, and for underground water (b) middle or low price state ferrimanganic is carried out to chemical oxidation reaction, atmospheric oxidation system (e), be used for passing through successively hybrid reaction system (c) and chemical assisted oxidation system (d) surface water after treatment, or carry out oxidizing reaction through chemical assisted oxidation system (d) underground water after treatment, atmospheric oxidation system (e) is divided into aero-mechanical oxygenating system (e-1) and air natural oxygenating system (e-2), aero-mechanical oxygenating system (e-1) for the mechanical oxygenation of surface water (a) system with Fe-Mn oxidation is become to ferro manganese composite oxides, air natural oxygenating system (e-2) for the natural oxygenation of ground water regime (b) with Fe-Mn oxidation is become to ferro manganese composite oxides, filtering system (f), for removing Fe, Mn, ammonia nitrogen, suspended substance and the particulate matter through atmospheric oxidation system (e) surface water and groundwater after treatment, sterilisation system (g), for killing the pathogenic micro-organism through filtering system (f) surface water and groundwater after treatment, finally exports water quality up to standard,
Wherein, surface water (a) is connected with hybrid reaction system (c), chemistry assisted oxidation system (d) is connected with hybrid reaction system (c) and underground water (b) respectively, the surface water (a) of processing through chemical assisted oxidation system (d) is connected with aero-mechanical oxygenating system (e-1), the underground water (b) of processing through chemical assisted oxidation system (d) is connected with air natural oxygenating system (e-2), aero-mechanical oxygenating system (e-1) is connected with filtering system (f) respectively with air natural oxygenating system (e-2), filtering system (f) comprises filter tank (12), back-purge system (h) and media regeneration system are (i), back-purge system (h) is (i) connected with filter tank (12) respectively with media regeneration system, filtering system (f) is connected with sterilisation system (g).
2. the collaborative removal system of Fe, Mn and ammonia nitrogen in compound micro-polluted source water as claimed in claim 1, is characterized in that:
Described hybrid reaction system (c) comprises mixing pit (1), reaction tank (2) and settling tank (3), surface water (a) directly enters mixing pit (1) in hybrid reaction system (c) and carries out mixing of water body and coagulating agent, then flow into reaction tank (2) and carry out the larger floc particle of abundant flocculation reaction formation, remove floc particle and the suspended substance in water body through the precipitating action of settling tank (3) again, settling tank (3) is connected with aero-mechanical oxygenating system (e-1) by rising pipe;
Described chemical assisted oxidation system (d) is made up of dispensation apparatus (4), administration device (5) and drug tube (6), administration device (5) is connected with dispensation apparatus (4), and administration device (5) is connected with the water inlet pipe of air natural oxygenating system (e-2) with aero-mechanical oxygenating system (e-1) respectively by drug tube (6);
Described aero-mechanical oxygenating system (e-1) is divided into two kinds of blast aeration system (e-1 ') and mechanical aeration systems (e-1 ") according to the difference of oxygenation mode;
Described blast aeration system (e-1 ') comprises aeration tank (7), gas pipe line (8), aerator (9), air pressurization device (10) and gas distributing pipeline (11), in aeration tank, (7) inside is provided with gas distributing pipeline (11), aerator (9) is fixed on gas distributing pipeline (11) top, and aerator (9) is connected with air pressurization device (10) by gas pipe line (8);
Described mechanical aeration system (e-1 ") is divided into surface aeration, under water aeration and jet-flow aeration;
Described surface aeration, aerating system forms by aerator, transmission shaft, electric motor, step-down gear, aeration tank under water, the inner aerator of installing in aeration tank, and aerator is connected with step-down gear with electric motor by transmission shaft;
Described jet-flow aeration system is made up of force (forcing) pump, jet pipe and aeration tank;
Described air natural oxygenating system (e-2) is divided into upwards the three kinds of modes of spraying, spray or drop downwards, described upwards sprinkling system (e-2 ') comprise and spray pond (21), spray line (22), flusher (23), the bottom of spraying pond (21) is equipped with spray line (22), and flusher (23) is installed on spray line (22) top;
Described filter tank (12) adopts air-water backwashing form, and the filtrate (12) in filter tank (12) adopts common homogeneous quartz sand filter media or ceramic grain filter;
Described back-purge system (h) comprises backwash pump (14), air pressurization device (10), backwashing water pipeline (16), gas pipe line (8), suction well (15), between backwash pump (14) and filter tank (12), be connected by backwashing water pipeline (16), air pressurization device (10) also and between filter tank (12) is connected by gas pipe line (8);
Described media regeneration system (i) comprises dosing facility (17) and storage medicine device (18), and dosing facility (17) is connected with storage medicine device (18), and dosing facility (17) is connected with filter tank (12);
Described sterilisation system (g) comprises that metering adds facility (19) and storage medicine facility (20), and metering adds facility (19) and is connected with the outlet conduit of filter tank (12) with storage medicine facility (20) respectively.
3. the collaborative removal system of Fe, Mn and ammonia nitrogen in compound micro-polluted source water as claimed in claim 2, is characterized in that: described air pressurization device (10) is air compressor machine or gas blower, and its pressure is mainly determined according to aeration tank (7) depth of water.
4. the collaborative removal system of Fe, Mn and ammonia nitrogen in compound micro-polluted source water as claimed in claim 2, is characterized in that: the structure formation of described aerator (9) is tubular type, disc type, bell-jar or plate armature.
5. the collaborative removal system of Fe, Mn and ammonia nitrogen in compound micro-polluted source water as claimed in claim 2, is characterized in that: described aerator is divided into rotary brush type, rotating disc type, submersible centrifugal, deep water type or the umbrella shape of falling is vertical.
6. the collaborative removal system of Fe, Mn and ammonia nitrogen in compound micro-polluted source water as claimed in claim 1, is characterized in that: more than the described required overbottom pressure of air natural oxygenating system (e-2) reaches 0.10MPa.
7. the collaborative removal system of Fe, Mn and ammonia nitrogen in compound micro-polluted source water as claimed in claim 1, is characterized in that: described filter tank (12) filtering velocity is 7～14m/h, and thickness of filter bed is 1.2～1.6m, and be 1～4d filtration cycle.
8. the collaborative removal system of Fe, Mn and ammonia nitrogen in compound micro-polluted source water as claimed in claim 1, is characterized in that: (i) the regeneration period is 1～3 year to described media regeneration system.
9. the collaborative removal system of Fe, Mn and ammonia nitrogen in compound micro-polluted source water as claimed in claim 1, it is characterized in that: the mixing pit in described hybrid reaction settling system (c) is that mechanically mixing or waterpower are mixed, reaction tank (2) is grid, grizzly bar, dividing plate or flap form, settling tank (3) is advection, inclined tube or swash plate or advection and inclined tube, or the array configuration of advection and swash plate.
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| CN201320699810.1U CN203613069U (en) | 2013-11-06 | 2013-11-06 | Process system for synergistically removing Fe, Mn and ammonia nitrogen in composite micro-polluted source water |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103601339A (en) * | 2013-11-06 | 2014-02-26 | 西安建筑科技大学 | Process system for synergically removing Fe, Mn and ammonia nitrogen in composite micropolluted source water |
| CN106830430A (en) * | 2017-03-07 | 2017-06-13 | 李如意 | The efficient fast treating process and method of a kind of low temperature and low turbidity water |
| CN111320272A (en) * | 2020-04-02 | 2020-06-23 | 安徽华骐环保科技股份有限公司 | Multi-condition controlled automatic back-flushing device for denitrification biological filter and operation method thereof |
-
2013
- 2013-11-06 CN CN201320699810.1U patent/CN203613069U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103601339A (en) * | 2013-11-06 | 2014-02-26 | 西安建筑科技大学 | Process system for synergically removing Fe, Mn and ammonia nitrogen in composite micropolluted source water |
| CN106830430A (en) * | 2017-03-07 | 2017-06-13 | 李如意 | The efficient fast treating process and method of a kind of low temperature and low turbidity water |
| CN106830430B (en) * | 2017-03-07 | 2021-02-09 | 李如意 | Efficient and rapid treatment process and method for low-temperature and low-turbidity water |
| CN111320272A (en) * | 2020-04-02 | 2020-06-23 | 安徽华骐环保科技股份有限公司 | Multi-condition controlled automatic back-flushing device for denitrification biological filter and operation method thereof |
| CN111320272B (en) * | 2020-04-02 | 2023-11-03 | 安徽华骐环保科技股份有限公司 | Operation method of automatic backwashing device of multi-condition controlled denitrification biological filter |
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