CN109626634A - A kind of river water quality in-situ remediation system and method - Google Patents
A kind of river water quality in-situ remediation system and method Download PDFInfo
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- CN109626634A CN109626634A CN201811564935.7A CN201811564935A CN109626634A CN 109626634 A CN109626634 A CN 109626634A CN 201811564935 A CN201811564935 A CN 201811564935A CN 109626634 A CN109626634 A CN 109626634A
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
Abstract
The present invention relates to Water quality restoration technical field more particularly to a kind of river water quality in-situ remediation systems and method.The river water quality in-situ remediation system includes that river is widened in upper river, downstream river course and the intensification being arranged between the upper river and downstream river course, it widens in the upper river and the intensification and is equipped with retaining dam between river, vacuum water pipeline is equipped with across the retaining dam, the both ends of the vacuum water pipeline widen that river is corresponding to be connected to the upper river, the intensification respectively, are connected with several pesticide feeding ducts on the vacuum water pipeline.River water quality in-situ remediation system and method for the present invention, it realizes water treatment agent and the quick of river water is sufficiently mixed, the water pollutants such as suspended matter, ammoniacal nitrogen, phosphorus, COD and each heavy metal species in river water body can efficiently be removed, General Promotion river water quality can be widely applied to water remediation and the emergency processing in river and lake.
Description
Technical field
The present invention relates to Water quality restoration technical field more particularly to a kind of river water quality in-situ remediation systems and method.
Background technique
With the fast development of Chinese society economy, water resource becomes increasingly conspicuous with industrialized contradiction, due to by industry
The pollution of waste water, sanitary sewage and agricultural area source, the pollution of China's water resource, especially surface water environment are on the rise.China seven
By different degrees of pollution, contamination characteristics are mainly showed for big water system, Main Lakes, immediate offshore area and the underground water of some areas
For total phosphorus, total nitrogen, COD and heavy metals exceeding standard.Above-mentioned combined pollution leads to the water environmental problems coverage in China
Extensively, harm is serious, and difficulty of governance is big.
On the one hand the reason of water resource deteriorates is based on point-source pollution.Chinese Regional is vast, populous, at present urbanization
It is horizontal also lower.Water pollution control technology and supervision on county and town's administrative grade is throughout the year not in place, leads to largely life and industry
Waste water only passes through simple level-one or two stage treatment, or even just discharges without any processing, causes point-source pollution.In addition to point source dirt
Dye, the non-point pollution in China is also very severe, especially runoff pollution.The knowledge cultural quality of people in the countryside is relatively
Low, environmental protection and health consciousness lack, and a large amount of house refuses, which are arbitrarily lost, sets, and sanitary sewage arbitrarily discharges, and pollutant is with precipitation pair
Earth's surface is washed away with rainwash, polluted river or lake.
It administers in river water body in black and odorous water governance process, a universal phenomenon is Modern sewage and water process
Technology used in technology factory simply copies in river regulation after only doing the diminution or amplification in scale.This is needed
Expensive equipment and material cost are wanted, often because operation management side powerlessly undertakes huge plant maintenance and operating cost, is led
Qualified when causing to check and accept, water body is returned black smelly after engineering terminates.Another is extremely simple and crude in river surface and lake surface
On directly spray a large amount of water treatment agents, ecological water body treat as an outdoor water processing reactor.Because natural water body without
Method and the water treatment agent of application are accomplished to be sufficiently mixed, and the water treatment agent for generally requiring to add several times equivalent can be only achieved expectation
Effect, this aspect increases drug cost, while will cause toxic action of the high concentration medicament to aqueous bios such as fish,
Influence the safety and health of Ecology.This simple and crude river and lake water surface directly sprays, another serious consequence is water
Body pollution object is not accomplished really to remove, and only and then water treatment agent is deposited to bottom for heavy metal, phosphorus and other nutritive salt
Mud, these pollutants are in bed mud because complicated chemical thermogenesis, finally can also discharge and polluted-water again.
Summary of the invention
(1) technical problems to be solved
The object of the present invention is to provide a kind of river water quality in-situ remediation system and methods, solve existing waterway water body treating
Administering existing natural water body with black and odorous water can not be sufficiently mixed with the water treatment agent of application, and water pollutant could not be real
The problem of removal.
(2) technical solution
In order to solve the above-mentioned technical problems, the present invention provides a kind of river water quality in-situ remediation systems, including upstream river
River is widened in road, downstream river course and the intensification being arranged between the upper river and downstream river course, in the upper river
It is widened with the intensification and is equipped with retaining dam between river, passed through the retaining dam and be equipped with vacuum water pipeline, the vacuum crosses water
The both ends of pipeline widen that river is corresponding to be connected to the upper river, the intensification respectively, connect on the vacuum water pipeline
There are several pesticide feeding ducts.
Further, the vacuum water pipeline includes sequentially connected first horizontal segment, vertical section and the second horizontal segment,
One end of the first horizontal segment is connected with the upper river, the other end of the first horizontal segment and the vertical section
Upper end be connected, the lower end of the vertical section is connected with one end of second horizontal segment, the other end of second horizontal segment and
The intensification widens river and is connected, and the first horizontal segment or second horizontal segment pass through the retaining dam.
Specifically, it is connected between the first horizontal segment and the vertical section by first pipe elbow, the vertical section
It is connected between second horizontal segment by second pipe elbow.
It further, further include being connected with the pesticide feeding duct into explosive barrel.
Further, the pesticide feeding duct is equipped with control valve.
In order to solve the above-mentioned technical problem, the present invention also provides a kind of river water quality in-situ remediation method, this method is adopted
With above-mentioned river water quality in-situ remediation system, this method comprises the following steps:
Setting is deepened to widen river between upper river and downstream river course, makes the depth difference for deepening to widen river
Greater than the depth of the upper river, the downstream river course, the width for deepening to widen river is made to be respectively greater than the upstream
The width in river, the downstream river course；
It is widened in the upper river and the intensification and establishes retaining dam on the river cross-section between river；
Vacuum water pipeline, the vacuum are set under the upper river and the horizontal plane for deepening to widen river
Water pipeline passes through the retaining dam；
Feeding opening is set on the vacuum water pipeline, the feeding opening is connected with pesticide feeding duct, it will be described into medicine
Pipeline is connected with into explosive barrel；
When river water flows quickly through the vacuum water pipeline, the water treatment agent into explosive barrel enters described into medicine
In pipeline, then quickly it is sufficiently mixed with the river water in the vacuum water pipeline.
Further, further includes: river is widened to the intensification and carries out regular dredging.
Further, the water treatment agent is oxidative disinfectant, flocculant, flocculation aid or their mixture.
Specifically, the vacuum water pipeline from the upper river to it is described deepen to widen on the extending direction in river according to
Secondary to set there are three the feeding opening, three feeding openings, which respectively correspond, applies flocculant, flocculation aid and oxidative disinfectant.
Further, the oxidative disinfectant is sodium hypochlorite, chlorine, hydrogen peroxide, bleaching powder, ozone, potassium permanganate or two
Chlorine monoxid；The flocculant is aluminium salt, molysite, ferrous salt, polymeric aluminum, polymeric iron, white lime, dithiocar-bamate or Huang
Ortho esters；The flocculation aid is anionic polyacrylamide or cationic polyacrylamide.
Specifically, the length of the vacuum water pipeline is 5-50m, and the internal diameter of the vacuum water pipeline is 100-
300mm；
1-3 feeding opening is set on the vacuum water pipeline, and each feeding opening is along the vacuum water pipeline 5
Extending direction is set gradually, and the spacing between two adjacent feeding openings is more than or equal to 2m；
The cubic meter volume numerical value for deepening to widen the length in river, width and depth of water three's product is river cubic meter
0.2-2 times of flow value per hour, square metre area figures for deepening to widen both the width in river and the depth of water product are
0.33-3.3 times of river cubic meters per minute flow value.
(3) beneficial effect
Above-mentioned technical proposal of the invention has the advantages that
River water quality in-situ remediation system and method provided by the invention, setting adds between upper river and downstream river course
River is widened deeply, is widened in upper river and intensification and retaining dam is set between river, retaining dam is passed through and vacuum water pipeline is set,
Intensification of the upstream river water after vacuum water pipeline flows into retaining dam is set to widen river, by pesticide feeding duct to vacuum water pipeline
In be passed through water treatment agent, and then realize quickly being sufficiently mixed for water treatment agent and river water.The river through the invention
Water quality in-situ remediation system and method, can be to water such as suspended matter, ammoniacal nitrogen, phosphorus, COD and each heavy metal species in river water body
Body pollution object is efficiently removed, General Promotion river water quality, be can be widely applied to the water remediation in river and lake and is answered
Anxious processing.
Detailed description of the invention
Fig. 1 is the main view of river water quality in-situ remediation system of the embodiment of the present invention；
Fig. 2 is the top view of river water quality in-situ remediation system of embodiment of the present invention Fig. 1；
Fig. 3 is the left view of river water quality in-situ remediation system of embodiment of the present invention Fig. 1.
In figure: 1: upper river；2: downstream river course；3: river is widened in intensification；4: retaining dam；5: vacuum water pipeline；
501: first horizontal segment；502: vertical section；503: the second horizontal segments；6: pesticide feeding duct；7: into explosive barrel；8: first pipe elbow；
9: second pipe elbow；10: control valve.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
As shown in Figure 1-3, the embodiment of the present invention provides a kind of river water quality in-situ remediation system, including upper river 1, under
River 3 is widened in trip river 2 and the intensification being arranged between the upper river 1 and downstream river course 2, and river is widened in the intensification
The depth in road 3 is respectively greater than the depth of the upper river 1, the downstream river course 2, the width point for deepening to widen river 3
Not great Yu the upper river 1, the downstream river course 2 width so that it is described intensification widen river 3 have the function of precipitate.
It widens in the upper river 1 and the intensification and is equipped with retaining dam 4 between river 3, the retaining dam 4 can use
Soil, steel, concrete gravel or sandbag etc. are built.
Across the retaining dam 4 be equipped with vacuum water pipeline 5, the both ends of the vacuum water pipeline 5 respectively with it is described on
The corresponding connection in river 3 is widened in trip river 1, the intensification.
It is tightly connected between the retaining dam 4 and the vacuum water pipeline 5, so that the river of all upper rivers 1
Water can only be flowed into the intensification by the vacuum water pipeline 5 and widen river 3.The vacuum water pipeline 5 can be according to reality
Demand setting in border is one or more.The length of each vacuum water pipeline 5 can arbitrarily adjust setting according to actual needs, excellent
Choosing is set as 5-50m.The internal diameter of each vacuum water pipeline 5 can arbitrarily adjust setting according to actual needs, be preferably provided with
For 100-300mm.
The vacuum water pipeline 5 is equipped with several feeding openings, and the feeding opening is connected with pesticide feeding duct 6.It is described into medicine
Pipe-line mixer can be set at mouthful, for being attached with the pesticide feeding duct 6.
The quantity for the feeding opening being arranged on each vacuum water pipeline 5 can arbitrarily be adjusted according to realization demand
It is whole, it is preferably provided with 1-3.Each feeding opening is set gradually along the extending direction of the vacuum water pipeline 5, and adjacent two
Spacing between feeding opening is preferably arranged to be more than or equal to 2m.
The pesticide feeding duct 6 is connected with into explosive barrel 7.Wherein, the quantity into explosive barrel 7 can be with the pesticide feeding duct 6
Quantity it is equal, each pesticide feeding duct 6 described connects one to one respectively with each into explosive barrel 7.
Described into being equipped with water treatment agent in explosive barrel 7, when river water flows quickly through the vacuum water pipeline 5, high speed
Water flow will cause feeding opening negative pressure, thus cause to be sucked into the water treatment agent in explosive barrel 7 by the pesticide feeding duct 6 described
In vacuum water pipeline 5, and quickly it is sufficiently mixed under high flow rate water flow or pipe-line mixer effect with river water in pipe.Certainly,
It can also be realized using pumping forces conveying or gravity transport model into medicine.
The river water quality in-situ remediation system through this embodiment, can be to the suspended matter in river water body, ammonia state
The water pollutants such as nitrogen, phosphorus, COD and each heavy metal species are efficiently removed, and General Promotion river water quality can be widely applied for
The water remediation and emergency processing in river and lake.
Furthermore, it is understood that the vacuum water pipeline 5 can use straight tube or bend pipe.
In the specific embodiment of the application, the vacuum water pipeline 5 preferably uses bend pipe.The vacuum water pipeline
5 include sequentially connected first horizontal segment 501, vertical section 502 and the second horizontal segment 503, one end of the first horizontal segment 501
It is connected with the upper river 1, the other end of the first horizontal segment 501 passes through the retaining dam 4 and the vertical section 502
Upper end be connected, the lower end of the vertical section 502 is connected with one end of second horizontal segment 503, second horizontal segment 503
The other end widen river 3 with the intensification and be connected.
It is, of course, also possible to which the first horizontal segment 501, vertical section 502 are separately positioned in the upper river 1, make
Second horizontal segment 503 widens river 3 with the intensification across the retaining dam 4 and is connected.
The vacuum water pipeline 5 is set as being made of first horizontal segment 501, vertical section 502 and the second horizontal segment 503
Bend pipe structure, can make the vacuum water pipeline 5 under the displacement of same horizontal direction, practical road that bend pipe inland river water flows through
Diameter is longer than straight tube, is conducive to water treatment agent and more fully mixes in pipeline with river water.
Specifically, it is connected between the first horizontal segment 501 and the vertical section 502 by first pipe elbow 8, institute
It states and is connected between vertical section 502 and second horizontal segment 503 by second pipe elbow 9.
In the specific embodiment of the application, three feeding openings are preferably provided on the vacuum water pipeline 5, described in three
Feeding opening is correspondingly connected with three pesticide feeding ducts 6 respectively.Wherein, the first horizontal segment 501 is set there are two feeding opening, this
Two feeding openings are all set in the upper river 1, and two feeding openings are correspondingly connected with two pesticide feeding ducts 6 respectively.
Second horizontal segment 503 be equipped with a feeding opening, the feeding opening be set to it is described intensification widen in river 3, the feeding opening with
One pesticide feeding duct 6 is connected.
Furthermore, it is understood that control valve 10 is respectively equipped on each pesticide feeding duct 6, for adjusting control water treatment agent
Flow.
In addition, if river is impounded body, then an immersible pump can be disposed on the vacuum water pipeline 5, is leaned on
Immersible pump drive impounded body from the upper river 1 flow through the vacuum water pipeline 5 enter it is described intensification widen river 3
In, and eventually enter into the downstream river course 2.
River water quality in-situ remediation system described in the present embodiment, structure is simple, the water treatment facilities for valuableness that no setting is required,
Without undertaking huge plant maintenance and operating cost.In addition to impounded body need to use immersible pump need other than, the present embodiment
Water quality restoration can be realized using the power that water body flows naturally in the river water quality in-situ remediation system, almost without external
Power and energy, cost are lower.
The embodiment of the invention also provides a kind of river water quality in-situ remediation method, this method uses the river of above-described embodiment
Road water quality in-situ remediation system, this method specifically comprise the following steps:
Setting is deepened to widen river 3 between upper river 1 and downstream river course 2, makes the depth for deepening to widen river 3
The depth of the respectively greater than described upper river 1, the downstream river course 2 makes the width for deepening to widen river 3 be respectively greater than institute
State the width of upper river 1, the downstream river course 2.
It is widened in the upper river 1 and the intensification and establishes retaining dam 4 on the river cross-section between river 3.
Vacuum water pipeline 5 is set under the upper river 1 and the horizontal plane for deepening to widen river 3, it is described
Vacuum water pipeline 5 passes through the retaining dam 4.
Feeding opening is set on the vacuum water pipeline 5, the feeding opening is connected with pesticide feeding duct 6, will it is described into
Pencil road 6 is connected with into explosive barrel 7.
When river water flows quickly through the vacuum water pipeline 5, the water treatment agent into explosive barrel 7 enter it is described into
In pencil road 6, then quickly it is sufficiently mixed in the 5 sewerage disposing medicament of vacuum water pipeline with river water.
Furthermore, it is understood that the water treatment agent is oxidative disinfectant, flocculant, flocculation aid or their mixture.It can
Three are placed in into explosive barrel 7 to respectively correspond oxidative disinfectant, flocculant, flocculation aid.It can also be by oxidative disinfectant, flocculation
Agent, flocculation aid mixing are placed on same into explosive barrel 7.The water treatment agent is delivered to by the pesticide feeding duct 6 into medicine
Mouthful, to sufficiently quickly mix in the vacuum water pipeline 5 with river water, and play specific purification function.
In the specific embodiment of the application, the vacuum water pipeline 5 is widened in the upper river 1 to the intensification
Three feeding openings are successively arranged on the extending direction in river 3, it is defeated that three feeding openings from left to right respectively correspond application
Send flocculant, flocculation aid and oxidative disinfectant.Wherein, the feeding opening for conveying flocculation aid is arranged in the feeding opening of conveying flocculant
Later, the feeding opening of flocculation aid and the distance between the feeding opening of conveying flocculant are conveyed, needs to meet suspended particulate in river water
Object is sufficiently de- steady through flocculant effect in the vacuum water pipeline 5 and flocculates, and flocculation aid, therefore this then could be added
The distance between two feeding openings more than 2m to be advisable.
Furthermore, it is understood that the oxidative disinfectant can use sodium hypochlorite, chlorine, hydrogen peroxide, bleaching powder, ozone, Gao Meng
Sour potassium or chlorine dioxide, naturally it is also possible to use other oxidative disinfectants according to actual needs.
Furthermore, it is understood that the flocculant can use aluminium salt, molysite, ferrous salt, polymeric aluminum, polymeric iron, white lime, two
Thiocarbamate or xanthate, naturally it is also possible to use other flocculants according to actual needs.
Furthermore, it is understood that the flocculation aid can use anionic polyacrylamide or cationic polyacrylamide, certainly
Other flocculation aids can also be used according to actual needs.
It, in an advantageous embodiment, can be by the flocculant and the oxygen when the flocculant uses ferrous salt
Change disinfectant to be used in combination, be conveyed that is, the flocculant and the oxidative disinfectant are passed through different pesticide feeding ducts 6 respectively
To corresponding feeding opening.In another preferred embodiment, then the water treatment agent is applied only with flocculant in ferrous salt
Front and back is added to carry out Air Exposure to river water respectively.
In the specific embodiment of the application, river 3 is widened by the intensification, so that river water crosses water pipe in the vacuum
The intensification is flowed into after the de- steady, flocculation of dosing and the Suspended Particles in Water reunited flow through the vacuum water pipeline 5 in road 5
It widens in river 3, and can widen in river 3 in the intensification and effectively be precipitated because water flow reduces rapidly.Therefore, described
Deepen to widen the length in river 3 to guarantee that river water flows through the hydraulic detention time of the river section and reach 12-120min and be advisable, water flow
Flow velocity is advisable with 5-50mm/s.Therefore, described to deepen to widen the length in river 3, width and the product numerical value of depth of water three (list
Position: m3) it is river flow value (unit: m per hour3/ h) 0.2-2 times be advisable.The cross section product value for deepening to widen river 3
(the product numerical value of both width and depth of water, unit: m2) it is river flow value per minute (unit: m3/ min) 0.33-3.3 times
It is advisable.
More specifically, to it is described intensification widen river 3 need carry out periodically, timely dredging handle, remove or
Mud is siphoned away, the precipitating function of deepening to widen river 3 can not only be kept, and realize to water pollutant such as a huge sum of money
Belong to, the real removal of phosphorus and other nutritive salt.
River water quality in-situ remediation method described herein, and directly sprays a large amount of water process medicines on river surface and lake surface
The existing method of agent is compared, and the application can be such that the water treatment agent applied sufficiently quickly mixes with natural water body to be clean, because
This need adds the water treatment agent of comparable sodium in conventional water treatment equipment, can reach desired ideal clean effect, no
Drug cost is only significantly reduced, while effectively protecting the safe and healthy of the aqueous bios such as fish and Ecology.
River water quality in-situ remediation system described herein and method are illustrated with two specific examples below.
Example one
In certain rural river, chooses suitable section and constructed with sandbag and establish one of retaining dam, wherein the wide 3m in river, water
Deep 1.0m, flow 320m3/h, flow velocity 30mm/s.It is 200mm, horizontal length that an internal diameter is installed under the horizontal plane in river
For 10 meters of vacuum water pipeline, make at the middle 1/2 of vacuum water pipeline through retaining dam.Vacuum water pipeline and barrage
Dam is tightly connected, and all river waters require to flow through barrage by the vacuum water pipeline.The section 20m after choosing retaining dam,
It is 2.0m that the section, which is dug downwards, and is deep to the depth of water, and digs width to the left and right to 6.0m, constitutes and deepens to widen river.
The water inlet end of vacuum water pipeline is arranged below the water surface at 0.4m, after retaining dam downward vertically by elbow
2.0m is set, later horizontal extension 5.0m further along.There are three feeding openings for the setting of vacuum water pipeline, and it is true to be separately positioned on distance
At water inlet end 1.0m, 2.0m, 8.0m of empty water pipeline.Three feeding openings pass through pesticide feeding duct and three 2.0m respectively3Into medicine
The bottom of bucket is connected.Three are arranged at riverbank into explosive barrel, 2.0m higher than river water plane.Control valve is installed into the exit of explosive barrel
To adjust the flow into medicine.
When river water flows quickly through vacuum water pipeline, feeding opening negative pressure is caused by high-velocity flow, and into explosive barrel and river surface
Gravity-head, drive into the water treatment agent in explosive barrel and entered in vacuum water pipeline by pesticide feeding duct, and make water process
Medicament is quickly sufficiently mixed in vacuum water pipeline with river water.Three respectively correspond into the water treatment agent in explosive barrel as at water
Manage grade sodium hypochlorite (effective chlorine 10%), polyaluminium sulfate (effective aluminium 10%) and anionic polyacrylamide (0.5%, molecule
Measure a Wan Liuqian).
By the openings of sizes of adjusting control valve, make applying for sodium hypochlorite, polyaluminium sulfate and anionic polyacrylamide
Dosage respectively corresponds control in 60-80L/hr, 60-80L/hr, 20-30L/hr.River water crosses retaining dam through vacuum water pipeline
It curves, and is flowed out from the bottom for deepening to widen river, river flow velocity 10mm/s under backward.Then the suspended particulate substance in river water,
Phosphorus and micro heavy are deepened to widen to precipitate rapidly in river and efficiently removed herein after flocculating.Every month opens up intensification
Wide river course carries out a dredging, removes mud, to keep the precipitating function of deepening to widen river.
The result shows that river water can be effectively removed using river water quality in-situ remediation system and method described in this example
In suspended particulate substance, ammoniacal nitrogen, phosphorus, COD.River water turbidity is from the near 5.0NTU or less of 50NTU.Ammoniacal nitrogen, phosphorus, COD difference
It is reduced to 1.4mg/L, 0.08mg/L and 16mg/L from 5.2mg/L, 2.5mg/L and 40mg/L, removal efficiency respectively reaches
73%, 96.8% and 60%.
Example two
In certain rural river, chooses suitable section and constructed with sandbag and establish twice retaining dam, wherein the wide 5m in river, water
3 exposures are arranged at a distance of 40m between twice retaining dam in deep 1.0m, flow 400m3/h, flow velocity 22mm/s between twice retaining dam
Gas aerator.Twice retaining dam is respectively first of retaining dam and second retaining dam from front to back.
It installs one across first retaining dam to be set under horizontal plane, internal diameter 200mm, horizontal length is the of 5m
One vacuum water pipeline makes at the middle 1/2 of the first vacuum water pipeline through first of retaining dam.In the first vacuum of distance
First feeding opening is set at the position water inlet end 1.0m of water pipeline, and the first feeding opening is used to apply ferrous sulfate (10%), flow
Amount is 100L/h.
It installs one across second retaining dam to be set under horizontal plane, internal diameter 200mm, horizontal length is the of 5m
Two vacuum water pipelines make at the middle 1/2 of the second vacuum water pipeline through first of retaining dam.In the second vacuum of distance
Second feeding opening is set at the position water inlet end 1.0m of water pipeline, the second feeding opening is used to apply polyacrylamide (0.5%),
Flow is 40L/h.The water inlet end of second vacuum water pipeline is arranged below the water surface at 0.4m, and the second vacuum water pipeline runs through
By elbow 2.0m downward vertically after second retaining dam, horizontal extension 3.0m further along later.After choosing second retaining dam
The section 20m, which is dug downwards and is deep to depth of water 2.0m, and to the left and right dig width 6.0m, constitute intensification widen river.
River water passes through first of retaining dam after being sufficiently mixed in the first vacuum water pipeline with ferrous sulfate first, then
The river region between first of retaining dam and second retaining dam is flowed into, the exposure of aeration oxygen increasing machine is passed through in the river region
It after gas, enters in the second vacuum water pipeline, and is worn after being sufficiently mixed in the second vacuum water pipeline with polyacrylamide
It crosses second retaining dam and curves downwards, then after the bottom outflow for deepening to widen river, river flow velocity 9mm/s.Then river
Suspended particulate substance, phosphorus and micro heavy in water are precipitated rapidly in river deepening to widen after flocculating and are efficiently gone
It removes.Every month widens river to intensification and carries out a dredging, removes mud, to keep the precipitating function of deepening to widen river.
The result shows that river water can be effectively removed using river water quality in-situ remediation system and method described in this example
In suspended particulate substance and phosphorus.River water turbidity is gone from the near 4.0NTU of 50NTU hereinafter, phosphorus is down to 0.12mg/L from 2.0mg/L
Except efficiency reaches 94.0%.
In conclusion river water quality in-situ remediation system and method described in the embodiment of the present invention, realize water process medicine
Agent and river water are quickly sufficiently mixed, can be to water such as suspended matter, ammoniacal nitrogen, phosphorus, COD and each heavy metal species in river water body
Body pollution object is efficiently removed, General Promotion river water quality, be can be widely applied to the water remediation in river and lake and is answered
Anxious processing.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " connected " " connects
Connect " it shall be understood in a broad sense, for example, it may be being fixedly connected, it may be a detachable connection, or be integrally connected；It can be machine
Tool connection, is also possible to be electrically connected；It can be directly connected, it can also be indirectly connected through an intermediary.For this field
For those of ordinary skill, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
In the description of the present invention, unless otherwise indicated, " several " are meant that one or more；The meaning of " plurality " is
Two or more；The orientation or positional relationship of the instructions such as term " on ", "lower", "left", "right", "inner", "outside" be based on
Orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than indication or suggestion institute
The device or element of finger must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this hair
Bright limitation.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of river water quality in-situ remediation system, which is characterized in that including upper river, downstream river course and be arranged in institute
River is widened in the intensification stated between upper river and downstream river course, is widened and is set between river in the upper river and the intensification
Have retaining dam, pass through the retaining dam be equipped with vacuum water pipeline, the both ends of the vacuum water pipeline respectively with the upstream
The corresponding connection in river is widened in river, the intensification, is connected with several pesticide feeding ducts on the vacuum water pipeline.
2. river water quality in-situ remediation system according to claim 1, which is characterized in that the vacuum water pipeline includes
Sequentially connected first horizontal segment, vertical section and the second horizontal segment, one end of the first horizontal segment and the upper river phase
Connection, the other end of the first horizontal segment are connected with the upper end of the vertical section, the lower end of the vertical section and described second
One end of horizontal segment is connected, and the other end of second horizontal segment widens river with the intensification and is connected, the first level
Section or second horizontal segment pass through the retaining dam.
3. river water quality in-situ remediation system according to claim 2, which is characterized in that the first horizontal segment with it is described
It is connected between vertical section by first pipe elbow, passes through second pipe elbow between the vertical section and second horizontal segment
It is connected.
4. river water quality in-situ remediation system according to claim 1, which is characterized in that further include and the pesticide feeding duct
It is connected into explosive barrel；The pesticide feeding duct is equipped with control valve.
5. a kind of river water quality in-situ remediation method, which is characterized in that this method is using according to any one of claims 1-4
River water quality in-situ remediation system, this method comprises the following steps:
Setting is deepened to widen river between upper river and downstream river course, is respectively greater than the depth for deepening to widen river
The depth of the upper river, the downstream river course, make it is described deepen widen river width be respectively greater than the upper river,
The width of the downstream river course；
It is widened in the upper river and the intensification and establishes retaining dam on the river cross-section between river；
Vacuum water pipeline is set under the upper river and the horizontal plane for deepening to widen river, the vacuum crosses water
Pipeline passes through the retaining dam；
Feeding opening is set on the vacuum water pipeline, the feeding opening is connected with pesticide feeding duct, by the pesticide feeding duct
It is connected with into explosive barrel；
When river water flows quickly through the vacuum water pipeline, the water treatment agent into explosive barrel enters the pesticide feeding duct
In, then quickly it is sufficiently mixed with the river water in the vacuum water pipeline.
6. river water quality in-situ remediation method according to claim 5, which is characterized in that the water treatment agent is oxidation
Disinfectant, flocculant, flocculation aid or their mixture.
7. river water quality in-situ remediation method according to claim 5, which is characterized in that the vacuum water pipeline is from institute
It states and is successively arranged three feeding openings, three feeding openings on upper river to the extending direction for deepening to widen river
It respectively corresponds and applies flocculant, flocculation aid and oxidative disinfectant.
8. according to the described in any item river water quality in-situ remediation methods of claim 6-7, which is characterized in that the oxidation sterilizing
Agent is sodium hypochlorite, chlorine, hydrogen peroxide, bleaching powder, ozone, potassium permanganate or chlorine dioxide；The flocculant be aluminium salt, molysite,
Ferrous salt, polymeric aluminum, polymeric iron, white lime, dithiocar-bamate or xanthate；The flocculation aid is anion poly- third
Acrylamide or cationic polyacrylamide.
9. river water quality in-situ remediation method according to claim 5, which is characterized in that further include: the intensification is opened up
Wide river course carries out regular dredging.
10. river water quality in-situ remediation method according to claim 5, which is characterized in that
The length of the vacuum water pipeline is 5-50m, and the internal diameter of the vacuum water pipeline is 100-300mm；
1-3 feeding opening, extension of each feeding opening along the vacuum water pipeline 5 are set on the vacuum water pipeline
Direction is set gradually, and the spacing between two adjacent feeding openings is more than or equal to 2m；
The cubic meter volume numerical value for deepening to widen the length in river, width and depth of water three's product is river cubic meter per small
When 0.2-2 times of flow value, square metre area figures for deepening to widen both width and the depth of water in river product are river
0.33-3.3 times of cubic meters per minute flow value.
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