CN105502830A - System and method for treating black and odorous stagnant water - Google Patents

System and method for treating black and odorous stagnant water Download PDF

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Publication number
CN105502830A
CN105502830A CN201610013023.5A CN201610013023A CN105502830A CN 105502830 A CN105502830 A CN 105502830A CN 201610013023 A CN201610013023 A CN 201610013023A CN 105502830 A CN105502830 A CN 105502830A
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water
oxygen
zone
starved area
aerobic zone
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沈晓笑
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/16—Nitrogen compounds, e.g. ammonia
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/14—NH3-N
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/02—Odour removal or prevention of malodour
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/30—Aerobic and anaerobic processes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/30—Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)

Abstract

The invention discloses a system and method for treating black and odorous stagnant water, and belongs to the technical field of water restoration. The system comprises a mixing zone, an anoxic zone, an aerobic zone, a stabilizing zone, enclosures and a backflow pipeline. The enclosures include the enclosure I, the enclosure II and the enclosure III and divide a riverway into the mixing zone, the anoxic zone, the aerobic zone and the stabilizing zone in sequence in the water flow direction, the mixing zone and the anoxic zone are separated through the enclosure I, the anoxic zone and the aerobic zone are separated through the enclosure II, the aerobic zone and the stabilizing zone are separated through the enclosure III, and the stabilizing zone and the mixing zone are connected through the backflow pipeline. The stabilizing zone is used for stabilizing water quality and enabling bottom backflow liquid to flow back to the mixing zone. The system has the advantages of being strong in pollutant removal pertinence and high in removal efficiency, fully guarantees the improvement of the circulating and self-purifying capabilities of the water and the restoration of the ecological function of the water and also has the advantages of being capable of reducing investment and good in operating effect.

Description

The system and method that a kind of black and odorous water that remains in a standstill is administered
Technical field
The invention belongs to river system repair technology field, more particularly, relate to the system and method that a kind of black and odorous water that remains in a standstill is administered.
Background technology
Along with the developing rapidly of China's economy, industrialization, the quickening of urbanization paces and the continuous increase of population, the divided and lock control in more river course, cause the viscous flow of water body and pollute aggravation, many river waters are black, smell is smelly.There is the problem that the river ecosystems such as dissolved oxygen reduces, transparency is low, nutritive substance increases are degenerated in water body, the deterioration of water quality causes community of aquatic organism to simplify the structure, species diversity declines.
The water pollutions situation of current China is still severeer.Point out in 2014 " China Environmental State Bulletin ", 968 states's control surface water monitoring section (some position) of 423 trunk rivers in the whole nation, 62 emphasis lakes (reservoir) have carried out water quality monitoring (WQM), I, II, III, IV, V, bad V class water quality section accounts for 3.4%, 30.4%, 29.3%, 20.9%, 6.8%, 9.2% respectively, main contamination index is chemical oxygen demand (COD), total phosphorus and five-day BOD.V and bad V class water quality section account for 16.0%, simultaneously more stream pollution situation not within the scope of national statistics allows of no optimist especially.China has has developed and implemented " water prevention and cure of pollution action plan ", wherein leading indicator: region and above completed region of the city black and odorous water all control within 10%.The water body section ratio that Beijing Tianjin and Hebei Region loses using function (being inferior to V class) declines about 15 percentage points, and the Yangtze River Delta, region, Pearl River Delta strive eliminating the water body losing using function.To the year two thousand thirty, seven large major river valley water quality excellent ratio in the whole nation totally reaches more than 75%, and completed region of the city black and odorous water is totally eliminated, and the management task of black and odorous water is still more serious.
At present, black smelly river regulation technology has soil water regulation, microbiobacterial agent technology, river aeration technology, biologic float bed technology and Artificial Wetland Techniques.For black and odorous water, because its water body current are comparatively slow or remain in a standstill, Pollutant levels are higher, if adopt soil water regulation, add microbiobacterial agent, river aeration, the technology such as biologic float bed purify, there is high cost, operational management is complicated and cure the symptoms, not the disease; River course major part is concrete structure simultaneously, if still set up Riparian Zone to repair pollutent, difficulty is very large; In addition river course land resources is very in short supply, sets up the restriction that the artificial swamp of enough areas, buffer strip etc. are also subject to various factors, and the bio-ecological restoration technology of therefore seeking the improvement of applicable black and odorous water becomes river regulation technology and seems particularly important.
Chinese invention patent, Authorization Notice No.: CN103979737B, authorized announcement date: 2015.10.14, disclose a kind of city river, lake sewage purification system, invent the water distribution Buffer Pool of UNICOM, cross-flow bio-contact oxidation aeration tank, pressure mud sump, microbial film deep purifying pond successively, and the mud-collecting well be connected with the mud discharging mouth being arranged on lower bottom each treating pond; Further comprises separate tank, anaerobically fermenting pond, water collecting basin.Its weak point is, this invention for be the source of pollution entering river course, not mentioned for internal contamination source, river course, and this invention exists high cost, operational management is complicated and cure the symptoms, not the disease.
Chinese invention patent, Authorization Notice No.: CN104261560B, authorized announcement date: 2015.10.28, disclose a kind of river sewage purification system, system of having invented comprises several apparatus module, apparatus module is made up of framework and oxygenate apparatus, comprise support, stuffing box and sieve plate, biofilm packing is covered with in case, sieve plate is fixed on bottom case, oxygenate apparatus comprises the air chamber that flow deflector surrounds, flow-stopping plate, blast main and anti-blowpipe, flow deflector and blast main are fixed, baffle surface establishes district's hemisphere protruding, and be fixed with oblique cone type oxygenation pipe, blast main is fixed on stuffing box, flow-stopping plate is placed in filler casing, and bottom is connected with separate mesh, is connected bottom separate mesh with sieve plate, and form baffling groove, anti-blowpipe is placed in baffling groove.Its weak point is, this invention based on biological treatment, investment and running cost high, long for the lower concentration river sewage Biofilm Colonization time, microbial bacteria group structure is poor.
Chinese invention patent, Authorization Notice No.: CN103771664B, authorized announcement date: 2015.10.28, disclose a kind of river corridor restoration system, invent and utilized the biogas in sun power and water to carry out biological pollution treatment to the oxygenation of water body microvesicle, be able to, to beyond the long-acting restoration of the ecosystem in the network of rivers, river course, utilize microbial film facture to reach long-term.Continuable improvement, reparation and safeguard effect of the network of rivers, river course Water quality.Its weak point is, this invention just improves for aerating system, lacks the system design to river regulation, poor to pollutant removal specific aim.
Chinese invention patent, Authorization Notice No.: CN104150620B, authorized announcement date: 2015.11.18, disclose a kind of water body for urban landscape rivers intelligence and accelerate aerating apparatus, invented main tank to be connected with pontoon by jacking system, jacking system is for controlling the underwater working depth of main tank; Main tank both sides are provided with water inlet pipe and rising pipe, and are communicated with rising pipe with water inlet pipe, and the top of main tank is provided with telescopic inlet pipe and communicates with air; Inside be provided with power part, power part is provided with impeller; Pontoon top is provided with solar panel, and the cabin of pontoon is built-in with cell box, controls to throw in intellectual monitoring jettison system, the gas blower of algae-inhibiting agent; In acceleration, the longitudinal flow velocity of lower floor's water body, realizes aeration oxygen replenishing, integrated chemical water conditioning method, thus river training water quality condition.Its weak point is, this invention is thrown in algae-inhibiting agent and brought foreign term, the problem for the treatment of effect instability, cannot realize long-term restoration of the ecosystem.
Chinese invention patent, Authorization Notice No.: CN103523998B, authorized announcement date: 2015.12.02, disclose a kind of purifying method controlling extraneous contamination source and the black smelly river course of restoration of the ecosystem, invented and adopted biomembrane purification device pre-treatment sewage draining exit waste water, river course planting aquatic plants, put hydrocoles in a suitable place to breed, the technique that aeration oxygen replenishing equipment etc. thinks combination is installed.Its weak point is, on the one hand, this invention for be river course point source local pollution source control, not obvious to the improvement of waterway system water quality and Ecology, because this invention process water yield is only the sewage that sewage draining exit is discharged, but improve insufficient for the water body be detained in river course, even if the water quality reaching standard of sewage draining exit, put into after being detained river course, because water body is detained and the reason of self-purification capacity difference, river water quality still cannot improve; On the other hand, what this invention adopted is film process, not only investment and running cost high, and operational management is complicated, in technique is arranged, and the measure of not mentioned mixing, stable and backflow, river course big yield, low stain water body are difficult to be suitable for, therefore, the efficiency for the removal of organism and nitrogen is low.
Chinese utility model patent, Authorization Notice No.: CN204737855U, authorized announcement date: 2015.11.04, disclose a kind of black-odor river multi-element ecology balance bio-remediation system, comprise biochemical degradation unit, purification of water quality unit, the first lift pump and the second lift pump, described biochemical degradation unit comprises the anoxic pond, anaerobic pond and the Aerobic Pond that set gradually, and described purification of water quality unit comprises the reaction settling basin, filtering basin and the clean water basin that set gradually; River is swarmed trip and is provided with multiple chinampas assembly; Be provided with agitator in described anoxic pond and anaerobic pond, in described Aerobic Pond, be provided with biological bacteria culture assembly; Described chinampa assembly, comprises nylon wire and at least four junked tires, and nylon wire is connected with junked tire and is positioned at the below of junked tire; Described biological bacteria culture assembly comprises pedestal and biological inoculum breeding support, and described biological inoculum breeding support is positioned at the top of pedestal, and pedestal is provided with aerating apparatus, and the inlet pipe of this aerating apparatus is connected with air pump.Its weak point is: the first, and this patent is that end-o f-pipe-control device is gushed in river, and the position of layout is only the end in river course, does not carry out systems analysis and improvement to whole river course.The second, this patent technical process is long, needs twice lifting, cause like this investment and running cost high, operational administrative complexity.Wherein the effect of the first lift pump is promoted to subsequent processing units, and the effect of the second lift pump water outlet is promoted to river swarm trip, for the lifting water yield and working time undeclared, also mentions treatment effect.3rd, it is indefinite that unit arranges function, and this invention middle finger goes out biochemical degradation unit makes macromolecule organic be degraded rapidly in the starting stage, meanwhile, decomposes the ammonia nitrogen in sewage and total phosphorus, and use clarification of water by rear end purification of water quality unit.
Summary of the invention
1. invent the technical problem that will solve
For the problem that the viscous flow polluted river channel water pollution substrate concentration of prior art is high, the invention provides the system and method that a kind of black and odorous water that remains in a standstill is administered.It can effectively be degraded the black smelly phenomenon of river, has good removal effect to organic carbon and nitrogen, and process stable effluent quality, construction investment is few, running cost is low, is applicable to process various river courses river.
2. technical scheme
For solving the problem, technical scheme provided by the invention is:
The system that a kind of black and odorous water that remains in a standstill is administered, comprise oxygen-starved area, aerobic zone, mixing zone, stable region, enclosure and reflux line, wherein, enclosure comprises enclosure I, enclosure II and enclosure III, river course is divided into mixing zone, oxygen-starved area, aerobic zone and stable region successively along water (flow) direction, separated by enclosure I between mixing zone and oxygen-starved area, separated by enclosure II between oxygen-starved area and aerobic zone, separated by enclosure III between aerobic zone and stable region, stable region is connected by reflux line with mixing zone.Unique subregion is administered and low reflux ratio circulation, and ensure that the unification for the treatment of effect and ecological recovery, mixing zone major function is that urban river water and stable region phegma carry out water quality and quantity adjustment, is conducive to the steady running of system; Oxygen-starved area major function carries out intermittent aeration in oxygen-starved area, carries out denitrification denitrogenation and remove part COD; Aerobic zone major function is under aerobic environment, removes COD and ammonia nitrogen, improves water transparency; Water conditioning is carried out in the effect of stable region, and bottom phegma is back to mixing zone; V class that water outlet reaches " water environment quality standard " (GB3838-2002), IV class that dissolved oxygen reaches " water environment quality standard " (GB3838-2002), have the advantages that pollutant removal is with strong points, removal efficiency is high, backflow ratio is the 10-15% of total Water, 6-10 days circulation primary, the abundant circulation of guarantee water body and the lifting of self-purification capacity, recover water ecology function, has reduced investment, feature that operating performance is good.
The present invention is directed to the process of pollution of river thing to have made system and put into design, do not need to set up Riparian Zone and repair pollutent, alleviate the pressure that river course land resources is in short supply, do not need artificial swamp, the buffer strip of setting up enough areas, reduce the difficulty of river course process, save processing cost, simplify operational management program.
For the practical problems of river regulation limited space, floor space anxiety, the invention provides one and do not take river course periphery land resources, at river course internal layout processing unit, without the need to newly-increased occupation of land, answer ground suiting measures to different conditions suitability strong, control eutrophic water algae growth and eliminate black smelly river course Be very effective; Overcome and set up big area soil needed for artificial swamp, partly uprightly concrete revetment is difficult to build a difficult problem for buffer strip, the solution black and odorous water problem of suiting measures to local conditions.The present invention not only reduces floor space, and investment reduction and working cost.
Combining environmental engineering science of the present invention, ecological disciplines design, have that processing efficiency is high, instant effect, need not floor space, power consumption few, non-secondary pollution, green ecological low-carbon (LC) feature, unique function division and the pump around circuit of science combine, solve pollutant fluxes and water body self-purification ability in water remediation and promote the unified key issue coordinated, for restoration of the ecosystem, there is profound significance.
Preferably, the mixing zone water yield: the oxygen-starved area water yield: the aerobic zone water yield: the water yield=1:(2 ~ 4, stable region): (4 ~ 6): 1, wherein the oxygen-starved area water yield: the aerobic zone water yield is 1:1-3, as ammonia nitrogen concentration 4-5mg/m 3time get 1:3 value, ammonia nitrogen concentration 2-4mg/m 3time between get 1:1 value.
Preferably, enclosure water surface 50-80cm using upper part as buoyancy aid, end plate chain.
Enclosure water surface 50-80cm adopts anti-aging PVC cloth parcel rigid foam cylinder as buoyancy aid using upper part, buoyancy aid comprises buoyancy aid I, buoyancy aid II and buoyancy aid III, buoyancy aid I is arranged on enclosure I, buoyancy aid II is arranged on enclosure II, buoyancy aid III is arranged on enclosure III, enclosure hypomere is made by reinforcement cloth and is formed, strong pulling force is added by reinforced bands, clamping plate reinforcement, its joint is combined by burr, fastened by rope, end plate chain, heavy chain bar comprises heavy chain bar I, heavy chain bar II and heavy chain bar III, heavy chain bar I is arranged on enclosure I bottom, heavy chain bar II is arranged on enclosure II bottom, heavy chain bar III is arranged on enclosure III bottom, to guarantee that normal circumstances enclosure under wind wave action does not leave lakebed, its reinforced bands can bear 20-50 thousand Niu Lali, significant wave height 0.3-0.8m stormy waves can be resisted attack.
Preferably, aerobic zone arranges fountain aeration machine and carries out oxygenation.
Preferably, in oxygen-starved area, plugflow aeration machine is set, plays aeration and stirring action.
Preferably, oxygen-starved area kind planting submerged plant and emergent, submerged plant accounts for the 5-10% of oxygen-starved area water surface area, and emergent accounts for oxygen-starved area water surface area 10-15%.
Submerged plant I and submerged plant II lays respectively in oxygen-starved area, by the organism bottom submerged plant removal oxygen-starved area and nitrogen and phosphorus pollution; Emergent I and emergent II lays respectively on the dual-side of oxygen-starved area, is removed organism and nitrogen, the phosphorus on top, oxygen-starved area by emergent.
Preferably, aerobic zone kind planting submerged plant and emergent, submerged plant accounts for the 10-15% of aerobic zone water surface area, and emergent accounts for aerobic zone water surface area 15-30%.
Submerged plant III and submerged plant IV lays respectively in aerobic zone, by the organism bottom submerged plant removal aerobic zone and nitrogen and phosphorus pollution; Emergent III and emergent IV lays respectively on the dual-side of aerobic zone, is removed organism and nitrogen, the phosphorus on top, aerobic zone by emergent.
The method that the black and odorous water that remains in a standstill is administered, the steps include:
A, build above-described a kind of remain in a standstill black and odorous water administer system;
The phegma of B, urban river water and stable region carries out water quality and quantity adjustment in mixing zone, is conducive to the steady running of system;
C, mixing zone water outlet enter oxygen-starved area, carry out intermittent aeration in oxygen-starved area by plugflow aeration machine, interval time 1-2 hour, aeration time 5-10 hour, carry out denitrification denitrogenation and remove part COD;
D, oxygen-starved area water outlet enter aerobic zone, under aerobic environment, removed the suspended substance of colloid in water body and dissolving, simultaneously to COD and ammonia nitrogen degradation, can improve water transparency by aerobic microbiological; By the organism bottom submerged plant removal oxygen-starved area and nitrogen and phosphorus pollution; Organism and nitrogen, the phosphorus on top, oxygen-starved area is removed by emergent;
E, aerobic zone water outlet enter stable region, and the effect of stable region is precipitating action, carries out water conditioning, go out that water clarity is high, COD and ammonia nitrogen concentration low; By the organism bottom submerged plant removal aerobic zone and nitrogen and phosphorus pollution thing; Organism and nitrogen, the phosphorus on top, aerobic zone is removed by emergent;
F, by bottom stable region phegma adopt lift pump promote, be back to mixing zone by reflux line, Main Function be circulation be detained water body, improve self-purification capacity, dilution Pollutant levels, improve the treatment effect of system and reduce pollution plot cost, and only having part river course to promote.
The present invention optimizes water body flow and improve dissolved oxygen in water body, and ammonia and nitrogen pollution removes with strong points, wide adaptability, operation is more flexible.Water body flow is one of problem of most critical in water remediation, is also basis and the key of carrying out the comprehensive regulation, and directly determines regulation effect and success or failure.The invention provides a kind of method that employing is administered with subregion, the reasonable setting in mixing zone, oxygen-starved area, four regions in aerobic zone and stable region, effective control viscous flow river course water pollutant, adapt to fluctuating widely and the change of weather condition of river course quality of river water, good to water quality and temperature Change strong adaptability, anti impulsion load, effectively to degrade the black smelly phenomenon of river, good removal effect is had to organic carbon and nitrogen, process stable effluent quality, construction investment is few, running cost is low, be applicable to process various river courses river.Oxygen-starved area is respectively 20% and 15% to COD and ammonia nitrogen removal frank.Aerobic zone is respectively 40% and 50% to COD and ammonia nitrogen removal frank.System COD total removal rate >=50%, ammonia nitrogen total removal rate >=60%, transparency improves >=80%.
The present invention has carried out obvious improvement to waterway system water quality and Ecology, water body is detained by circulation, improve self-purification capacity, then the effect of emergent and submerged plant is added, continuative improvement and raising waterway system water quality and Ecology, the concrete measure illustrate mixing, stablizing and reflux, can adapt to the demand of river course big yield, low stain water body, improve the removal efficiency of organism and nitrogen.
The present invention carries out systems analysis and improvement to whole river course, provides a set of administering method being directed to whole river course, reduced investment, instant effect, good stability.The outstanding problem of, poor fluidity high for current viscous flow polluted river channel water pollution substrate concentration, the invention provides a kind of employing with subregion improvement for circulation self-cleaning of advocating peace is auxiliary method, on the basis that removal and the transparency of COD, nitrogen improve, science improves the mobility of water body, improve water body self-purification ability, investment reduction and running cost, treatment effect is good, water quality and ecological recovery fast.
Low for dissolved oxygen, transparency is low, ammonia and the high outstanding problem of phosphorus, the invention provides a kind of method that employing is administered with subregion, mixing zone, oxygen-starved area, the reasonable setting in four regions in aerobic zone and stable region, effective control viscous flow river course water pollutant, adapt to fluctuating widely and the change of weather condition of river course quality of river water, to water quality and temperature Change strong adaptability, anti impulsion load is good, effectively to degrade the black smelly phenomenon of river, good removal effect is had to organic carbon and nitrogen, process stable effluent quality, construction investment is few, running cost is low, be applicable to process various river courses river.
The invention provides mixing zone, oxygen-starved area, aerobic zone and stable region, each definite functions, interrelated, oxygen-starved area is respectively 20% and 15% to COD and ammonia nitrogen removal frank.Aerobic zone is respectively 40% and 50% to COD and ammonia nitrogen removal frank.And by planting emergent and submerged plant in oxygen-starved area and aerobic zone, fully naturally method reduces pollutent, improves self purification of water body function, system COD total removal rate >=50%, ammonia nitrogen total removal rate >=60%, and transparency improves >=80%.
Preferably, aerobic zone adopts fountain aeration machine to carry out oxygenation, ensure Dissolved Oxygen in Water >=4mg/L, working time is 6-9 hour every day, under the prerequisite meeting the dissolved oxygen required for self purification of water body, make full use of emergent and submerged plant is repaired, reduce the time of aeration as far as possible, running cost can be reduced like this and reduce operational administrative difficulty.
Preferably, in step F, bottom stable region, the backflow ratio of phegma is the 10-15% of the mixing zone water yield, the oxygen-starved area water yield, the aerobic zone water yield and stable region water yield summation, 6-10 days circulation primary, return time turn on pump every day 5-10 hour, Main Function is that rationally water body is detained in circulation, improve self-purification capacity, dilution Pollutant levels, improve the treatment effect of system and reduce pollution plot cost.
3. beneficial effect
Adopt technical scheme provided by the invention, compared with prior art, there is following beneficial effect:
(1) the present invention makes full use of subregion improvement and low reflux ratio circulation, and improve pollutant fluxes and water body self-purification ability, unique subregion is administered and low reflux ratio circulates, and ensure that the unification for the treatment of effect and ecological recovery.The mixing zone water yield: the oxygen-starved area water yield: the aerobic zone water yield: the water yield=1:(2 ~ 4, stable region): (4 ~ 6): 1, the wherein oxygen-starved area water yield: the aerobic zone water yield is 1:1-3,1:3 value is got during ammonia nitrogen concentration 4-5mg/, 1:1 value is got between ammonia nitrogen 2-4, mixing zone major function is that urban river water and stable region phegma carry out water quality and quantity adjustment, is conducive to the steady running of system; Oxygen-starved area major function carries out intermittent aeration in oxygen-starved area, carries out denitrification denitrogenation and remove part COD; Aerobic zone major function is under aerobic environment, removes COD and ammonia nitrogen, improves water transparency.Water conditioning is carried out in the effect of stable region, and bottom phegma is back to mixing zone; V class that water outlet reaches " water environment quality standard " (GB3838-2002), IV class that dissolved oxygen reaches " water environment quality standard " (GB3838-2002), has the advantages that pollutant removal is with strong points, removal efficiency is high.Backflow ratio is the 10-15% of total Water, 6-10 days circulation primary, fully ensures the circulation of water body and the lifting of self-purification capacity, recovers water ecology function, has reduced investment, feature that operating performance is good;
(2) the present invention optimizes water body flow and improve dissolved oxygen in water body, and ammonia and nitrogen pollution removes with strong points, wide adaptability, operation is more flexible; Water body flow is one of problem of most critical in water remediation, is also basis and the key of carrying out the comprehensive regulation, and directly determines regulation effect and success or failure.The invention provides a kind of method that employing is administered with subregion, the reasonable setting in mixing zone, oxygen-starved area, four regions in aerobic zone and stable region, effective control viscous flow river course water pollutant, adapt to fluctuating widely and the change of weather condition of river course quality of river water, good to water quality and temperature Change strong adaptability, anti impulsion load, effectively to degrade the black smelly phenomenon of river, good removal effect is had to organic carbon and nitrogen, process stable effluent quality, construction investment is few, running cost is low, be applicable to process various river courses river.Oxygen-starved area is respectively 20% and 15% to COD and ammonia nitrogen removal frank; Aerobic zone is respectively 40% and 50% to COD and ammonia nitrogen removal frank, system COD total removal rate >=50%, ammonia nitrogen total removal rate >=60%, and transparency improves >=80%;
(3) the present invention without the need to newly-increased occupation of land, should ground suiting measures to different conditions suitability strong, control eutrophic water algae growth and eliminate black smelly river course Be very effective; The present invention by arranging mixing zone, oxygen-starved area, aerobic zone and stable region in river course, do not take river course periphery land resources, overcome and set up big area soil needed for artificial swamp, partly uprightly concrete revetment is difficult to build a difficult problem for buffer strip, the solution black and odorous water problem of suiting measures to local conditions.The present invention not only reduces floor space, and investment reduction and working cost.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention;
Fig. 2 is the present invention's plot plan used;
Fig. 3 is the present invention's section layout drawing used.
In figure: 1, mixing zone; 101, emergent I; 102, emergent II; 103, emergent III; 104, emergent IV; 111, submerged plant I; 112, submerged plant II; 113, submerged plant III; 114, submerged plant IV; 2, oxygen-starved area; 3, aerobic zone; 4, stable region; 5, enclosure; 51, enclosure I; 52, enclosure II; 53, enclosure III; 6, plugflow aeration machine; 7, fountain aeration machine; 8, lift pump; 9, reflux line; 10, emergent; 11, submerged plant; 12, buoyancy aid; 13, heavy chain bar.
Embodiment
For understanding content of the present invention further, by reference to the accompanying drawings and embodiment the present invention is described in detail.
Embodiment 1
Composition graphs 1-3, the system that a kind of black and odorous water that remains in a standstill is administered, comprise oxygen-starved area 2, aerobic zone 3, mixing zone 1, stable region 4, enclosure and reflux line 9, wherein, enclosure comprises enclosure I51, enclosure II52 and enclosure III53, river course is divided into mixing zone 1, oxygen-starved area 2, aerobic zone 3 and stable region 4 successively along water (flow) direction, mixing zone 1 water yield: oxygen-starved area 2 water yield: aerobic zone 3 water yield: stable region 4 water yields=1:(2 ~ 4): (4 ~ 6): 1, wherein oxygen-starved area 2 water yield: aerobic zone 3 water yield is 1:1-3, as ammonia nitrogen concentration 4-5mg/m 3time get 1:3 value, ammonia nitrogen concentration 2-4mg/m 3time between get 1:1 value.
Separated by enclosure I51 between mixing zone 1 and oxygen-starved area 2, separated between oxygen-starved area 2 and aerobic zone 3 by enclosure II52, separated between aerobic zone 3 and stable region 4 by enclosure III53, stable region 4 is connected by reflux line 9 with mixing zone 1.
Aerobic zone 3 arranges fountain aeration machine 7 and carries out oxygenation, 3 kinds, aerobic zone planting submerged plant and emergent, and submerged plant accounts for the 10-15% of aerobic zone 3 water surface area, and emergent accounts for aerobic zone 3 water surface area 15-30%.
Submerged plant comprises submerged plant I111, submerged plant II112, submerged plant III113 and submerged plant IV114; Emergent comprises emergent I101, emergent II102, emergent III113 and emergent IV104.Submerged plant kind is water caltrop, Huang Sicao, waterweed, hornwort, and planting density is 30-80 strain/m 2, selected submerged plant durability against pollution is strong, clean effect good, and survival rate is high, convenient management, improves submerged plant to the effect of pollutant removal, improves water body self-purification ability, be reduced by the biochemical treatment such as aeration and backflow means, and then save running cost and reduce operational administrative difficulty.Emergent kind is reed, calamus, and planting density is 5-10 strain/m 2, selected emergent durability against pollution is strong, clean effect good, and survival rate is high, convenient management, improves emergent to the effect of pollutant removal, improves water body self-purification ability, be reduced by the biochemical treatment such as aeration and backflow means, and then save running cost and reduce operational administrative difficulty.
Submerged plant III113 and submerged plant IV114 lays respectively in aerobic zone 3, by the organism bottom submerged plant removal aerobic zone 3 and nitrogen and phosphorus pollution; Emergent III113 and emergent IV104 lays respectively on the dual-side of aerobic zone 3, is removed organism and nitrogen, the phosphorus on top, aerobic zone 3 by emergent.
Arrange plugflow aeration machine 6 in oxygen-starved area 2,2 kinds, oxygen-starved area planting submerged plant and emergent, submerged plant accounts for the 5-10% of oxygen-starved area 2 water surface area, and emergent accounts for oxygen-starved area 2 water surface area 10-15%.
Submerged plant I111 and submerged plant II112 lays respectively in oxygen-starved area 2, by the organism bottom submerged plant removal oxygen-starved area 2 and nitrogen and phosphorus pollution; Emergent I101 and emergent II102 lays respectively on the dual-side of oxygen-starved area 2, is removed organism and nitrogen, the phosphorus on top, oxygen-starved area 2 by emergent.
Unique subregion is administered and low reflux ratio circulation, and ensure that the unification for the treatment of effect and ecological recovery, mixing zone 1 major function is that urban river water and stable region phegma carry out water quality and quantity adjustment, is conducive to the steady running of system; Oxygen-starved area 2 major function carries out intermittent aeration in oxygen-starved area 2, carries out denitrification denitrogenation and remove part COD; Aerobic zone 3 major function is under aerobic environment, removes COD and ammonia nitrogen, improves water transparency; Water conditioning is carried out in the effect of stable region 4, and bottom phegma is back to mixing zone; V class that water outlet reaches " water environment quality standard " (GB3838-2002), IV class that dissolved oxygen reaches " water environment quality standard " (GB3838-2002), have the advantages that pollutant removal is with strong points, removal efficiency is high, backflow ratio is the 10-15% of total Water, 6-10 days circulation primary, the abundant circulation of guarantee water body and the lifting of self-purification capacity, recover water ecology function, has reduced investment, feature that operating performance is good.
Enclosure water surface 50-80cm using upper part as buoyancy aid, end plate chain.Enclosure water surface 50-80cm adopts anti-aging PVC cloth parcel rigid foam cylinder as buoyancy aid using upper part, buoyancy aid comprises buoyancy aid I121, buoyancy aid II122 and buoyancy aid III123, buoyancy aid I121 is arranged on enclosure I51, buoyancy aid II122 is arranged on enclosure II52, buoyancy aid III123 is arranged on enclosure III53, enclosure hypomere is made by reinforcement cloth and is formed, strong pulling force is added by reinforced bands, clamping plate reinforcement, its joint is combined by burr, fastened by rope, end plate chain, heavy chain bar comprises heavy chain bar I131, heavy chain bar II132 and heavy chain bar III133, heavy chain bar I131 is arranged on enclosure I51 bottom, heavy chain bar II132 is arranged on enclosure II52 bottom, heavy chain bar III133 is arranged on enclosure III53 bottom, to guarantee that normal circumstances enclosure under wind wave action does not leave lakebed, its reinforced bands can bear 20-50 thousand Niu Lali, significant wave height 0.3-0.8m stormy waves can be resisted attack.
The present invention is directed to the process of pollution of river thing to have made system and put into design, do not need to set up Riparian Zone and repair pollutent, alleviate the pressure that river course land resources is in short supply, do not need artificial swamp, the buffer strip of setting up enough areas, reduce the difficulty of river course process, save processing cost, simplify operational management program.
For the practical problems of river regulation limited space, floor space anxiety, the invention provides one and do not take river course periphery land resources, at river course internal layout processing unit, without the need to newly-increased occupation of land, answer ground suiting measures to different conditions suitability strong, control eutrophic water algae growth and eliminate black smelly river course Be very effective; Overcome and set up big area soil needed for artificial swamp, partly uprightly concrete revetment is difficult to build a difficult problem for buffer strip, the solution black and odorous water problem of suiting measures to local conditions.The present invention not only reduces floor space, and investment reduction and working cost.
Combining environmental engineering science of the present invention, ecological disciplines design, have that processing efficiency is high, instant effect, need not floor space, power consumption few, non-secondary pollution, green ecological low-carbon (LC) feature, unique function division and the pump around circuit of science combine, solve pollutant fluxes and water body self-purification ability in water remediation and promote the unified key issue coordinated, for restoration of the ecosystem, there is profound significance.
The method that the black and odorous water that remains in a standstill is administered, the steps include:
A, build above-described a kind of remain in a standstill black and odorous water administer system;
The phegma of B, urban river water and stable region 4 carries out water quality and quantity adjustment in mixing zone 1, is conducive to the steady running of system;
C, mixing zone 1 water outlet enter oxygen-starved area 2, carry out intermittent aeration in oxygen-starved area 2 by plugflow aeration machine 6, interval time 1-2 hour, aeration time 5-10 hour, carry out denitrification denitrogenation and remove part COD;
D, oxygen-starved area 2 water outlet enter aerobic zone 3, under aerobic environment, removed the suspended substance of colloid in water body and dissolving, simultaneously to COD and ammonia nitrogen degradation, can improve water transparency by aerobic microbiological; By the organism bottom submerged plant removal oxygen-starved area 2 and nitrogen and phosphorus pollution; Organism and nitrogen, the phosphorus on top, oxygen-starved area 2 is removed by emergent; Aerobic zone 3 adopts fountain aeration machine 7 to carry out oxygenation, ensure Dissolved Oxygen in Water >=4mg/L, working time is 6-9 hour every day, under the prerequisite meeting the dissolved oxygen required for self purification of water body, make full use of emergent and submerged plant is repaired, reduce the time of aeration as far as possible, running cost can be reduced like this and reduce operational administrative difficulty.
E, aerobic zone 3 water outlet enter stable region 4, and the effect of stable region 4 is precipitating actions, carries out water conditioning, go out that water clarity is high, COD and ammonia nitrogen concentration low; By the organism bottom submerged plant removal aerobic zone 3 and nitrogen and phosphorus pollution thing; Organism and nitrogen, the phosphorus on top, aerobic zone 3 is removed by emergent;
F, by bottom stable region 4 phegma adopt lift pump 8 promote, be back to mixing zone 1 by reflux line 9, Main Function be circulation be detained water body, improve self-purification capacity, dilution Pollutant levels, improve the treatment effect of system and reduce pollution plot cost, and only having part river course to promote.
Bottom stable region 4, the backflow ratio of phegma is the 10-15% of mixing zone 1 water yield, oxygen-starved area 2 water yield, aerobic zone 3 water yield and stable region 4 water yield summation, 6-10 days circulation primary, return time turn on pump every day 5-10 hour, Main Function is that rationally water body is detained in circulation, improve self-purification capacity, dilution Pollutant levels, improve the treatment effect of system and reduce pollution plot cost.
The present invention optimizes water body flow and improve dissolved oxygen in water body, and ammonia and nitrogen pollution removes with strong points, wide adaptability, operation is more flexible.Water body flow is one of problem of most critical in water remediation, is also basis and the key of carrying out the comprehensive regulation, and directly determines regulation effect and success or failure.The invention provides a kind of method that employing is administered with subregion, the reasonable setting in mixing zone 1, oxygen-starved area 2,4 four regions in aerobic zone 3 and stable region, effective control viscous flow river course water pollutant, adapt to fluctuating widely and the change of weather condition of river course quality of river water, good to water quality and temperature Change strong adaptability, anti impulsion load, effectively to degrade the black smelly phenomenon of river, good removal effect is had to organic carbon and nitrogen, process stable effluent quality, construction investment is few, running cost is low, be applicable to process various river courses river.2 pairs, oxygen-starved area COD and ammonia nitrogen removal frank are respectively 20% and 15%.3 pairs, aerobic zone COD and ammonia nitrogen removal frank are respectively 40% and 50%.System COD total removal rate >=50%, ammonia nitrogen total removal rate >=60%, transparency improves >=80%.
The present invention has carried out obvious improvement to waterway system water quality and Ecology, water body is detained by circulation, improve self-purification capacity, then the effect of emergent and submerged plant is added, continuative improvement and raising waterway system water quality and Ecology, the concrete measure illustrate mixing, stablizing and reflux, can adapt to the demand of river course big yield, low stain water body, improve the removal efficiency of organism and nitrogen.
The present invention carries out systems analysis and improvement to whole river course, provides a set of administering method being directed to whole river course, reduced investment, instant effect, good stability.The outstanding problem of, poor fluidity high for current viscous flow polluted river channel water pollution substrate concentration, the invention provides a kind of employing with subregion improvement for circulation self-cleaning of advocating peace is auxiliary method, on the basis that removal and the transparency of COD, nitrogen improve, science improves the mobility of water body, improve water body self-purification ability, investment reduction and running cost, treatment effect is good, water quality and ecological recovery fast.
Low for dissolved oxygen, transparency is low, ammonia and the high outstanding problem of phosphorus, the invention provides a kind of method that employing is administered with subregion, mixing zone 1, oxygen-starved area 2, the reasonable setting in 4 four regions in aerobic zone 3 and stable region, effective control viscous flow river course water pollutant, adapt to fluctuating widely and the change of weather condition of river course quality of river water, to water quality and temperature Change strong adaptability, anti impulsion load is good, effectively to degrade the black smelly phenomenon of river, good removal effect is had to organic carbon and nitrogen, process stable effluent quality, construction investment is few, running cost is low, be applicable to process various river courses river.
The invention provides mixing zone 1, oxygen-starved area 2, aerobic zone 3 and stable region 4, each definite functions, interrelated, 2 pairs, oxygen-starved area COD and ammonia nitrogen removal frank are respectively 20% and 15%.3 pairs, aerobic zone COD and ammonia nitrogen removal frank are respectively 40% and 50%.And by planting emergent and submerged plant in oxygen-starved area 2 and 3 kinds, aerobic zone, fully naturally method reduces pollutent, improves self purification of water body function, system COD total removal rate >=50%, ammonia nitrogen total removal rate >=60%, and transparency improves >=80%.
Embodiment 2
Certain viscous flow river course, city one, water quality before administering: bad V class of " water environment quality standard " (GB3838-2002), concrete water quality: pH7 ~ 9, COD≤80mg/L, ammonia nitrogen≤5mg/L, transparency≤10cm, dissolved oxygen≤0.5mg/L.Adopt technique of the present invention, composition graphs 1-3, its structure and treatment step with embodiment 1, ammonia nitrogen concentration 2-4mg/m 3, mixing zone 1 water yield: oxygen-starved area 2 water yield: aerobic zone 3 water yield: stable region 4 water yields=1:4:4:1.
3 kinds, aerobic zone planting submerged plant and emergent, submerged plant accounts for 10% of aerobic zone 3 water surface area, and emergent accounts for aerobic zone 3 water surface area 15%.
2 kinds, oxygen-starved area planting submerged plant and emergent, submerged plant accounts for 5% of oxygen-starved area 2 water surface area, and emergent accounts for oxygen-starved area 2 water surface area 10%.
The planting density of submerged plant is 30 strains/m 2, the planting density of emergent is 5 strains/m 2.
Stable region 4 ratio of refluxing is 10% of total Water, 6 days circulation primary, return time turn on pump every day 5 hours, fully ensures the circulation of water body and the lifting of self-purification capacity.
Enclosure water surface 50cm is using upper part as buoyancy aid, and enclosure hypomere reinforced bands can bear 20,000 Niu Lali, can resist significant wave height 0.3m stormy waves and attack.
Carry out intermittent aeration in oxygen-starved area 2 by plugflow aeration machine 6,1 hour interval time, aeration time 5 hours, aerobic zone 3 adopts fountain aeration machine 7 to carry out oxygenation, and ensure Dissolved Oxygen in Water >=4mg/L, working time is 6 hours every days.COD total removal rate 56.5%, ammonia nitrogen total removal rate 62%, transparency improves >=80%, if table 1 is each workshop section pollutant removal situation.
Table 1 each workshop section pollutant removal situation
Embodiment 3
Certain viscous flow river course, city two, length 2.1km, width 20m suitable for reading, end opening width 11m, available depth 1.5m, slope than 1:3, water yield 48825m 3.Water quality before administering: bad V class of " water environment quality standard " (GB3838-2002), concrete water quality: pH7 ~ 9, COD≤80mg/L, ammonia nitrogen≤5mg/L, transparency≤10cm, dissolved oxygen≤0.5mg/L.Adopt technique of the present invention, composition graphs 1-3, its structure and treatment step with embodiment 1, ammonia nitrogen concentration 4-5mg/m 3, mixing zone 1 water yield: oxygen-starved area 2 water yield: aerobic zone 3 water yield: stable region 4 water yields=1:2:6:1.
3 kinds, aerobic zone planting submerged plant and emergent, submerged plant accounts for 15% of aerobic zone 3 water surface area, and emergent accounts for aerobic zone 3 water surface area 30%.
2 kinds, oxygen-starved area planting submerged plant and emergent, submerged plant accounts for 10% of oxygen-starved area 2 water surface area, and emergent accounts for oxygen-starved area 2 water surface area 15%.
The planting density of submerged plant is 80 strains/m 2, the planting density of emergent is 10 strains/m 2.
Stable region 4 ratio of refluxing is 15% of total Water, 10 days circulation primary, return time turn on pump every day 10 hours, fully ensures the circulation of water body and the lifting of self-purification capacity.
Enclosure water surface 80cm is using upper part as buoyancy aid, and enclosure hypomere reinforced bands can bear 50,000 Niu Lali, can resist significant wave height 0.8m stormy waves and attack.
Carry out intermittent aeration in oxygen-starved area 2 by plugflow aeration machine 6,2 hours interval times, aeration time 10 hours, aerobic zone 3 adopts fountain aeration machine 7 to carry out oxygenation, and ensure Dissolved Oxygen in Water >=4mg/L, working time is 9 hours every days.COD total removal rate 62.5%, ammonia nitrogen total removal rate 61.5%.
Embodiment 4
Certain viscous flow river course, city three, length 2.1km, width 20m suitable for reading, end opening width 11m, available depth 1.5m, slope than 1:3, water yield 48825m 3.Water quality before administering: bad V class of " water environment quality standard " (GB3838-2002), concrete water quality: pH7 ~ 9, COD≤80mg/L, ammonia nitrogen≤5mg/L, transparency≤10cm, dissolved oxygen≤0.5mg/L.Adopt technique of the present invention, composition graphs 1-3, its structure and treatment step with embodiment 1, wherein, mixing zone 1 water yield: oxygen-starved area 2 water yield: aerobic zone 3 water yield: stable region 4 water yields=1:2:4:1.
3 kinds, aerobic zone planting submerged plant and emergent, submerged plant accounts for 13% of aerobic zone 3 water surface area, and emergent accounts for aerobic zone 3 water surface area 25%.
2 kinds, oxygen-starved area planting submerged plant and emergent, submerged plant accounts for 8% of oxygen-starved area 2 water surface area, and emergent accounts for oxygen-starved area 2 water surface area 14%.
The planting density of submerged plant is 60 strains/m 2, the planting density of emergent is 8 strains/m 2.
Stable region 4 ratio of refluxing is 14% of total Water, 8 days circulation primary, return time turn on pump every day 8 hours, fully ensures the circulation of water body and the lifting of self-purification capacity.
Enclosure water surface 70cm is using upper part as buoyancy aid, and enclosure hypomere reinforced bands can bear 40,000 Niu Lali, can resist significant wave height 0.7m stormy waves and attack.
Carry out intermittent aeration in oxygen-starved area 2 by plugflow aeration machine 6,1.5 hours interval times, aeration time 8 hours, aerobic zone 3 adopts fountain aeration machine 7 to carry out oxygenation, and ensure Dissolved Oxygen in Water >=4mg/L, working time is 7.5 hours every days.
Embodiment 5
The present embodiment is with embodiment 1, and oxygen-starved area 2 adopts plugflow aeration machine 6, and summer and autumn working time control at 8 hours, as ammonia nitrogen concentration 4mg/m 3time oxygen-starved area 2 water yield: aerobic zone 3 water yield is 1:3.
Embodiment 6
The present embodiment is with embodiment 1, and oxygen-starved area 2 adopts plugflow aeration machine 6, and summer and autumn working time control at 9 hours, as ammonia nitrogen concentration 5mg/m 3time oxygen-starved area 2 water yield: aerobic zone 3 water yield is 1:3 value, ammonia nitrogen concentration 2-4mg/m 3time between get 1:1 value.
Embodiment 7
The present embodiment is with embodiment 1, and oxygen-starved area 2 adopts plugflow aeration machine 6, and summer and autumn working time control at 8.5 hours, as ammonia nitrogen concentration 4.5mg/m 3time, oxygen-starved area 2 water yield: aerobic zone 3 water yield is 1:3.
Embodiment 8
The present embodiment is with embodiment 1, and oxygen-starved area 2 adopts plugflow aeration machine 6, and winter spring working time controls at 6 hours, as ammonia nitrogen concentration 2mg/m 3time, oxygen district 2 water yield: aerobic zone 3 water yield is 1:1.
Embodiment 9
The present embodiment is with embodiment 1, and oxygen-starved area 2 adopts plugflow aeration machine 6, and winter spring working time controls at 7 hours, as ammonia nitrogen concentration 4mg/m 3time, oxygen district 2 water yield: aerobic zone 3 water yield is 1:1.
Embodiment 10
The present embodiment is with embodiment 1, and oxygen-starved area 2 adopts plugflow aeration machine 6, and winter spring working time controls at 6.5 hours, as ammonia nitrogen concentration 3mg/m 3time, oxygen district 2 water yield: aerobic zone 3 water yield is 1:1.
Schematically above be described the present invention and embodiment thereof, this description does not have restricted, and also just one of the embodiments of the present invention shown in accompanying drawing, actual structure is not limited thereto.So, if those of ordinary skill in the art enlightens by it, when not departing from the invention aim, designing the frame mode similar to this technical scheme and embodiment without creationary, all should protection scope of the present invention be belonged to.

Claims (10)

1. the system of black and odorous water improvement that remains in a standstill, comprise oxygen-starved area (2) and aerobic zone (3), it is characterized in that, also comprise mixing zone (1), stable region (4), enclosure and reflux line (9), wherein, enclosure comprises enclosure I (51), enclosure II (52) and enclosure III (53), river course is divided into mixing zone (1) successively along water (flow) direction, oxygen-starved area (2), aerobic zone (3) and stable region (4), separated by enclosure I (51) between mixing zone (1) and oxygen-starved area (2), oxygen-starved area (2)) and aerobic zone (3) between separated by enclosure II (52), separated by enclosure III (53) between aerobic zone (3) and stable region (4), stable region (4) is connected by reflux line (9) with mixing zone (1).
2. the system of a kind of black and odorous water improvement that remains in a standstill according to claim 1, it is characterized in that, mixing zone (1) water yield: oxygen-starved area (2) water yield: aerobic zone (3) water yield: stable region (4) water yield=1:(2 ~ 4): (4 ~ 6): 1, wherein oxygen-starved area (2) water yield: aerobic zone (3) water yield 1:1-3.
3. according to claim 1 a kind of remain in a standstill black and odorous water administer system, it is characterized in that, enclosure water surface 50-80cm using upper part as buoyancy aid, end plate chain.
4. the system of a kind of black and odorous water improvement that remains in a standstill according to claim 2, it is characterized in that, aerobic zone (3) arrange fountain aeration machine (7) and carry out oxygenation.
5. the system of a kind of black and odorous water improvement that remains in a standstill according to claim 2, is characterized in that, arrange plugflow aeration machine (6) in oxygen-starved area (2).
6. the system of a kind of black and odorous water improvement that remains in a standstill according to claim 1, it is characterized in that, planting submerged plant and emergent are planted in oxygen-starved area (2), submerged plant accounts for the 5-10% of oxygen-starved area (2) water surface area, and emergent accounts for oxygen-starved area (2) water surface area 10-15%.
7. the system of a kind of black and odorous water improvement that remains in a standstill according to claim 5, it is characterized in that, planting submerged plant and emergent are planted in aerobic zone (3), submerged plant accounts for the 10-15% of aerobic zone (3) water surface area, and emergent accounts for aerobic zone (3) water surface area 15-30%.
8. the method that the black and odorous water that remains in a standstill is administered, is characterized in that:
A, build according to claim 1 a kind of remain in a standstill black and odorous water administer system;
The phegma of B, urban river water and stable region (4) carries out water quality and quantity adjustment in mixing zone (1), is conducive to the steady running of system;
C, mixing zone (1) water outlet enter oxygen-starved area (2), intermittent aeration is carried out by plugflow aeration machine (6) in oxygen-starved area (2), interval time 1-2 hour, aeration time 5-10 hour, carry out denitrification denitrogenation and remove part COD;
D, oxygen-starved area (2) water outlet enter aerobic zone (3), under aerobic environment, removed the suspended substance of colloid in water body and dissolving, simultaneously to COD and ammonia nitrogen degradation, can improve water transparency by aerobic microbiological; Organism and the nitrogen and phosphorus pollution of bottom, oxygen-starved area (2) is removed by submerged plant; Organism and nitrogen, the phosphorus on oxygen-starved area (2) top is removed by emergent;
E, aerobic zone (3) water outlet enter stable region (4), and the effect of stable region (4) is precipitating action, carries out water conditioning, go out that water clarity is high, COD and ammonia nitrogen concentration low; Organism and the nitrogen and phosphorus pollution of bottom, aerobic zone (3) is removed by submerged plant; Organism and nitrogen, the phosphorus on aerobic zone (3) top is removed by emergent;
F, by stable region (4) bottom phegma adopt lift pump (8) promote, mixing zone (1) is back to by reflux line (9), Main Function is that water body is detained in circulation, improve self-purification capacity, dilution Pollutant levels, improve the treatment effect of system and reduce pollution plot cost.
9. the method for a kind of black and odorous water improvement that remains in a standstill according to claim 8, it is characterized in that, aerobic zone (3) adopt fountain aeration machine (7) to carry out oxygenation, and ensure Dissolved Oxygen in Water >=4mg/L, working time is 6-9 hour every day.
10. the method for a kind of black and odorous water improvement that remains in a standstill according to claim 8, it is characterized in that, in step F, the backflow ratio of stable region (4) bottom phegma is the 10-15% of mixing zone (1) water yield, oxygen-starved area (2) water yield, aerobic zone (3) water yield and stable region (4) water yield summation, 6-10 days circulation primary, return time turn on pump every day 5-10 hour.
CN201610013023.5A 2016-01-08 2016-01-08 System and method for treating black and odorous stagnant water Pending CN105502830A (en)

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Application publication date: 20160420