CN206955749U - A kind of oxidation ditch river denitrification equipment - Google Patents

A kind of oxidation ditch river denitrification equipment Download PDF

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Publication number
CN206955749U
CN206955749U CN201720484386.7U CN201720484386U CN206955749U CN 206955749 U CN206955749 U CN 206955749U CN 201720484386 U CN201720484386 U CN 201720484386U CN 206955749 U CN206955749 U CN 206955749U
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floating bed
biological floating
carrier
biological
oxidation ditch
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周培丰
倪首光
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Shantou East Environment Management Co Ltd
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Shantou East Environment Management Co Ltd
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Abstract

A kind of oxidation ditch river denitrification equipment is the utility model is related to, belongs to technical field of sewage purification.It arranges that soft open channel cuts dirty net and forms gallery of leaking water with littoral, pushing flow mixer is respectively disposed with gallery of leaking water, plugflow aeration machine is biological floating bed, biological floating bed suspended from biologic packing material;Be respectively disposed between pushing flow mixer and plugflow aeration machine it is biological floating bed, the biological floating bed position correspondence in sewage draining exit, each sewage draining exit arranged beneath have one it is biological floating bed.Single processing space is formed using pushing flow mixer, biological floating bed, plugflow aeration machine and transverse cutting dirt net, form A/O circulation efficient process, the purification efficiency increased water quality, the special construction design of the outer carrier of biologic packing material and interior carrier, on the basis of the implantation of microorganism and breeding needs is met, the stabilization of filler is kept to greatest extent, reduces the influence of mixer and aerator jet during advancing at utmost speed, microorganism is maintained vigour in mixed flow state, carry out nitration reaction.

Description

A kind of oxidation ditch river denitrification equipment
Technical field
A kind of oxidation ditch river denitrification equipment is the utility model is related to, belongs to technical field of sewage purification.
Background technology
To accelerate to promote country《Water prevention and cure of pollution action plan》China's region and above city are built in " ten, water " Into the requirement of area's black and odorous water:" by 2020, region and above completed region of the city black and odorous water were controlled within 10%, are arrived 2030, completed region of the city black and odorous water was totally eliminated " controlling target.For ammonia during improvement river regulation The problem of clearances such as nitrogen, total nitrogen are low, have selected that " a kind of research of oxidation ditch river denitrification process for river regulation is with setting The problem of standby exploitation ".
In the prior art:
(1)Artificial swamp recovery technique
Divide free flow surface constructed wetland, horizontal drowned flow artificial wet land, the class of vertical subsurface flow wetland three.It has uniqueness And complicated purification mechanism, made using the physics of matrix-microorganism-plant complex ecosystem, chemistry and the triple coordinations of biology With, by filtering, adsorbing, precipitating, ion exchange, plant absorption and microorganism decomposition realize the high-efficient purification to waste water.People Work wetland is denitrogenated mainly by wetland plant absorption and root microbiological deterioration, but due to not enough dissolved oxygens Small with hydraulic load, synchronous nitration and denitrification ability is weaker, easily blocks, it is difficult to which the features such as running in the winter time causes its denitrification ability It is extremely limited.
(2)Stabilization pond
In natural environment, some depression of river bank would generally be built into stabilization pond, equally, for some middle-size and small-size rivers Stream, can also on river course dam.Stabilization pond purify water mainly acted on by microbial metabolism, water plant metabolism make With, diluting effect, precipitation, flocculation and planktonic organism act on, meanwhile, also can effectively remove total coli group, Excrement colibacillus group and heterotrophicy bacteria.Stabilization pond processing system has that operating cost is low, simple to operate, denitrification effect is good, without dirty The advantages that mud processing.But its subject matter faced is that HRT is longer, floor space is excessive, it is serious etc. no with deposition to give an offensive smell It is adapted to popularization and application.
(3)Electrolysis denitrogenation
Electrolysis unit is set by river course, and in electrolytic process, chlorion is chlorine in the surface transformation of anode, is dissolved in water Generate chlorine and hypochlorous acid, i.e., effective chlorine residue, the ammonia nitrogen in water is oxidized when being contacted with effective chlorine residue to be removed.Therefore, The removal of ammonia nitrogen is mainly acted on by chlorine and hypochlorous indirect oxidation, higher to the clearance of ammonia nitrogen, and floor space is small, but It is due to that power consumption is big, treating capacity is little, fails to effectively improve the self-purification capacity in river course and anti-load-bearing capacity, therefore be not suitable for pushing away Wide application.
To be difficult to effectively degrade for inorganic nitrogen in river course using oxidation ditch river denitrification process, the situations such as clearance is low and The technology of research and development, it is mainly characterized by effectively removes ammonia nitrogen by the nitrification and denitrification reaction constantly circulated, and significantly The load of total nitrogen is reduced, oxygen gradient is dissolved by controlling, forms height energy range, degrades inorganic nitrogen and greatly improve step by step Removal efficiency, and the impact resistance and pollutant carrying capacity in river course can be effectively improved.
The content of the invention
The purpose of this utility model is to administer for river basins, total not complete especially suitable for rural area, town and country land The full regulation for cutting dirty black and odorous water, it is also applied for easily being polluted the oxidation ditch river denitrification equipment of impact valley harnessing by external source.
To reach above-mentioned purpose, the utility model adopts the following technical scheme that:
A kind of special equipment of oxidation ditch river denitrification process, arrange that soft open channel cuts dirty net 4 and forms gallery of leaking water with littoral, Leak water and be respectively disposed with pushing flow mixer 2 in gallery, plugflow aeration machine 5, biological floating bed 3, biological floating bed 3 fill out suspended from biology Material 7;Biological floating bed 3 are respectively disposed between pushing flow mixer 2 and plugflow aeration machine 5, biological floating bed 3 position correspondence is in row Dirty mouth 1, each arranged beneath of sewage draining exit 1 have one biological floating bed 3.
Further, the pushing flow mixer 2 and plugflow aeration machine 5 and the ordering relation of two biological floating bed 3 be successively For pushing flow mixer 2, biological floating bed 3, plugflow aeration machine 5, biological floating bed 3, and itself and other are set using transverse cutting dirt net 6 It is standby to separate to form a single space.
Further, the biologic packing material 7 is connected by biological rope 71 and hangs on biological floating bed 3 lower section, biologic packing material 7 Outer carrier 72 is designed for curvilinear structures, and the head and the tail both ends of outer carrier 72 are fixedly connected with biological rope 71 respectively.
Further, the biologic packing material 7 includes outer carrier 72 and interior carrier 73, and outer carrier 72 and interior carrier 73 are curve Structure design, mutually wound between the outer carrier 72 and interior carrier 73 and multiple intersection points be present.
The beneficial effects of the utility model are:
(1)Efficient nitric efficiency, oxidation ditch river denitrification process are the wounds that oxidation ditch process is applied to river regulation New technology, by soft open channel cut interruption in dirty net set plug-flow and aerator, biological floating bed, biofilm bed, add it is compound The means such as microorganism form it into A/O circulation efficient process functional sections.
(2)The impact resistance and pollutant carrying capacity in river course are greatly improved, the structure that soft open channel cuts dirty net can be largely The littoral external source that ground controls pollutes the diffusion to whole basin, then enters the gallery of leaking water that its section of dirty net is formed with bank, gallery It is interior that sewage and biologic packing material, biological floating bed contact area can be greatly increased using oxidation ditch river denitrification process, improve anti- Efficiency and removal efficiency are answered, greatly saves equipment and material.In rainy season, because rainwash increases, blow-off line overflow well Sewage outflow, many external source sewage is entered and administer river course, at this moment, there is the oxidation ditch river denitrogenation of certain volumetric loading Technique just can effectively dam these rain sewage, make river course not because being destroyed the ecosystem of original structure by short-term impact, Effectively improve the impact resistance and pollutant carrying capacity in river course.
(3)Single processing space is formed using pushing flow mixer, biological floating bed, plugflow aeration machine and transverse cutting dirt net, Form A/O circulation efficient process, the purification efficiency increased water quality.
(4)The special construction design of the outer carrier of biologic packing material and interior carrier, meeting the implantation of microorganism and breeding needs On the basis of, the stabilization of filler is kept to greatest extent, reduces the influence of mixer and aerator jet during advancing at utmost speed, Microorganism is maintained vigour in mixed flow state, carry out nitration reaction.
(5)Oxidation ditch river denitrification process is to reduce the important ring of river course eutrophication, is that improvement water area water-quality is long-term The safeguard of stable operation, its caused economic benefit are that the improvement of river basins water quality can provide for the mankind and gather field Institute, public place of entertainment, scientific research and place of education, and with the function of nature sightseeing, tourism, amusement etc., it is often more important that when River regulation recovers the value that original natural ecological environment is advantageous to be lifted littoral land, and the pollutant degraded is advantageous to carry Rise pollution emission reduction benefit.
Brief description of the drawings
Accompanying drawing 1 is device structure schematic diagram of the present utility model.
Accompanying drawing 2 is device A-A sectional views of the present utility model.
Accompanying drawing 3 is the structural representation of apparatus embodiments two of the present utility model.
Accompanying drawing 4 is biologic packing material structural representation of the present utility model.
Embodiment
In order that juror can be further understood that to the purpose, feature and function of the utility model, hereby lift preferable Embodiment simultaneously coordinates schema detailed description as follows:
A kind of oxidation ditch river denitrification process, comprises the following steps:
(1)By arranging that soft open channel cuts dirty net gallery of leaking water, width of corridor 15m are formed with littoral;
(2)The sewage and upstream sewage that littoral sewage draining exit is discharged are limited in gallery, and are sequentially arranged plug-flow and are stirred Machine is mixed, plugflow aeration machine is biological floating bed, and biological floating bed suspended from biologic packing material, implantation and breeding for microorganism provide must The place wanted;
(3)Leak water gallery the limitation pollutant dilution that makes to leak water in gallery it is relatively low, load is larger, plus biological floating bed Arrangement, makes basin dissolved oxygen depletion very fast, forms hypoxic/anaerobic section;
The hypoxic/anaerobic section, dissolved oxygen is relatively low, and amphimicrobian and anaerobe are used as electricity by the use of various organic substrates Sub- donor, using NO3-N and NO2-N as electron acceptor, carrying out anaerobic respiration makes it be reduced to nitrogen, total so as to cut down Nitrogen;
The amphimicrobian and anaerobe are denitrifying bacteria.
(4)Make to form mixed flow state in gallery by pushing flow mixer, then lifted by the effect of plugflow aeration machine Dissolved oxygen concentration, aerobic section is formed, continuous repeated plant arrangement forms it into the oxidation ditch work of A/O circular treatments in gallery Skill.
The aerobic section, dissolved oxygen is lifted to 2~6mg/L by plugflow aeration machine, using aerobic microbiological in aerobic bar It is nitrite that nitration reaction is carried out under part by mineralized nitrogen, and Nitrite transformation is nitrate by bacterium afterwards, passes through repetition Advancing equipment, and carry out cooperation with hypoxic/anaerobic section and reach the effect of A/O circular treatments, and then make aerobic section nitrification anti- Nitrite nitrogen caused by answering can change into the effect that nitrogen reaches biological denitrificaion by denitrification in time;
The aerobic microbiological is ammonia oxidizing bacteria and nitrite-oxidizing bacterium.
Dissolved oxygen concentration is lifted in aerobic section by watercourse aeration to be formedConversion, lack Oxygen/anaerobism functional section makes the OUR of microorganism be more than river course itself because river course has certain dirty load of receiving in itself Reoxygenation speed, form natural hypoxic/anaerobic environment and carry outConversion, control dissolved oxygen concentration can make oxygen Change the energy range that height is formed in ditch, microorganism is degraded step by step inorganic nitrogen, greatly improve removal efficiency, and realize synchronization Nitration denitrification acts on (SNR).
The effect of A/O circular treatments is reached by repeating arrangement, makes nitrite nitrogen caused by aerobic section nitration reaction The effect that nitrogen reaches biological denitrificaion can be changed into by denitrification in time.Meanwhile dissolved oxygen concentration gradient is controlled, make oxidation ditch It is interior to form different energy range, be advantageous to improve the efficiency of biological denitrificaion.
Embodiment 1:
Refer to shown in Fig. 1-2, be the structural representation of the preferred embodiment for the utility model, a kind of oxidation ditch river Denitrification equipment, its soft open channel arranged cut dirty net 4 and form gallery of leaking water with littoral, and plug-flow stirring is respectively disposed with gallery of leaking water Machine 2, plugflow aeration machine 5, biological floating bed 3, biological floating bed 3 make gallery of leaking water suspended from biologic packing material 7, the limitation for gallery of leaking water Interior pollutant dilution is relatively low, and load is larger, plus biological floating bed arrangement, makes basin dissolved oxygen depletion very fast, forms scarce Oxygen/anaerobism section, make to form mixed flow state in gallery by pushing flow mixer, then it is molten by the effect lifting of plugflow aeration machine Oxygen concentration is solved, forms aerobic section, continuous repeated plant arrangement forms it into the oxidation ditch process of A/O circular treatments in gallery, And the energy preferably complicated Environment control such as adjusted stream basin, not the waters interference beyond by gallery of leaking water.In order to preferably Reach deamination regulation effect, be respectively disposed with biological floating bed 3 between pushing flow mixer 2 and plugflow aeration machine 5, biological floating bed 3 Put and correspond to sewage draining exit 1, each arranged beneath of sewage draining exit 1 has one biological floating bed 3, and the filthy water that sewage draining exit 1 is discharged is floated with ecology Bed 3 is closest, is advantageous to microorganism and carries out anaerobic respiration in time;In addition, the cloth set of pushing flow mixer 2 and plugflow aeration machine 5 It is equipped with and is beneficial to make to form mixed flow state and lifting dissolved oxygen concentration in gallery, while prevents biological floating bed 3 excessively to concentrate not Aerobic section is formed beneficial to formation, increases substantially the efficiency of A/O circular treatments.
As shown in fig.4, biologic packing material 7 is connected by biological rope 71 and hangs on biological floating bed 3 lower section, biologic packing material 7 Outer carrier 72 is designed for curvilinear structures, and the head and the tail both ends of outer carrier 72 are fixedly connected with biological rope 71 respectively.Except that can increase Microorganism implantation area, it can also reduce the mixed flow interference of pushing flow mixer 2 and plugflow aeration machine 5.As further Preferred scheme, it is curvilinear structures design that biologic packing material 7, which divides for outer carrier 72 and interior carrier 73, outer carrier 72 and interior carrier 73, And mutually wound between outer carrier 72 and interior carrier 73 and multiple intersection points be present, the stability of biologic packing material is increased substantially, The harmful effect to microorganism such as current is at utmost reduced, stable living environment is kept, makes microorganism in mixed flow shape Maintained vigour in state, carry out nitration reaction.
Embodiment 2:
As shown in fig.3, pushing flow mixer 2 and plugflow aeration machine 5 and the ordering relation of two biological floating bed 3 are followed successively by It is pushing flow mixer 2, biological floating bed, plugflow aeration machine 5, biological floating bed, and using transverse cutting dirt net 6 by its with other equipment every Open form is into a single space.Multiple purification regions will be isolated into gallery, the operating efficiency of equipment is at utmost improved, keeps away Exempt to influence deamination effect because purification scope is excessive, reduce the disturbing factor that other spatial band are come.
Device performance parameters:
Certainly, illustrated above is only the preferred embodiment of the utility model, not limits use of the present utility model with this Scope, therefore, it is every made in the utility model principle it is equivalent change should be included in the scope of protection of the utility model.

Claims (4)

  1. A kind of 1. oxidation ditch river denitrification equipment, it is characterised in that:Arrange that soft open channel cuts dirty net (4) and forms corridor of leaking water with littoral Road, pushing flow mixer (2), plugflow aeration machine (5), biological floating bed (3), under biological floating bed (3) are respectively disposed with gallery of leaking water Face suspension biologic packing material (7);It is respectively disposed between pushing flow mixer (2) and plugflow aeration machine (5) biological floating bed (3), it is described Biological floating bed (3) position correspondence has one biological floating bed (3) in sewage draining exit (1), each sewage draining exit (1) arranged beneath.
  2. A kind of 2. oxidation ditch river denitrification equipment according to claim 1, it is characterised in that:The pushing flow mixer (2) Pushing flow mixer (2), biological floating bed, plug-flow are followed successively by with the ordering relation of plugflow aeration machine (5) and two biological floating bed (3) It is aerator (5), biological floating bed, and separate to form a single space with other equipment by it using transverse cutting dirt net (6).
  3. A kind of 3. oxidation ditch river denitrification equipment according to claim 1, it is characterised in that:The biologic packing material (7) by Biological rope (71) is connected and hung on below biological floating bed (3), and the outer carrier (72) of biologic packing material (7) designs for curvilinear structures, The head and the tail both ends of outer carrier (72) are fixedly connected with biological rope (71) respectively.
  4. A kind of 4. oxidation ditch river denitrification equipment according to claim 3, it is characterised in that:Biologic packing material (7) bag Outer carrier (72) and interior carrier (73) are included, outer carrier (72) and interior carrier (73) design for curvilinear structures, the outer carrier (72) Mutually wound between interior carrier (73) and multiple intersection points be present.
CN201720484386.7U 2017-05-04 2017-05-04 A kind of oxidation ditch river denitrification equipment Active CN206955749U (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109179865A (en) * 2018-09-11 2019-01-11 河海大学 A kind of device and method for low dissolved oxygen polluted-water restoration of the ecosystem

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109179865A (en) * 2018-09-11 2019-01-11 河海大学 A kind of device and method for low dissolved oxygen polluted-water restoration of the ecosystem

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