CN109626634B - Riverway water quality in-situ remediation system and method - Google Patents
Riverway water quality in-situ remediation system and method Download PDFInfo
- Publication number
- CN109626634B CN109626634B CN201811564935.7A CN201811564935A CN109626634B CN 109626634 B CN109626634 B CN 109626634B CN 201811564935 A CN201811564935 A CN 201811564935A CN 109626634 B CN109626634 B CN 109626634B
- Authority
- CN
- China
- Prior art keywords
- water
- river
- riverway
- widened
- vacuum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
-
- 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
Landscapes
- 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)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention relates to the technical field of water quality restoration, in particular to a riverway water quality in-situ restoration system and a riverway water quality in-situ restoration method. This riverway water quality normal position repair system includes upper reaches river course, low reaches river course and sets up deepening between upper reaches river course and the low reaches river course widens the river course the upper reaches river course with deepening is widened and is equipped with the retaining dam between the river course, passes the retaining dam is equipped with the vacuum sewer pipe, the both ends of vacuum sewer pipe respectively with the upper reaches river course deepen widen the river course and correspond the intercommunication, be connected with a plurality of medicine inlet pipe ways on the vacuum sewer pipe. The in-situ riverway water quality restoration system and the method realize the rapid and sufficient mixing of the water treatment agent and the river water, can efficiently remove water pollutants such as suspended matters, ammoniacal nitrogen, phosphorus, COD (chemical oxygen demand), various heavy metals and the like in the riverway water body, comprehensively improve the riverway water quality, and can be widely applied to the water body restoration and emergency treatment of riverways and lakes.
Description
Technical Field
The invention relates to the technical field of water quality restoration, in particular to a riverway water quality in-situ restoration system and a riverway water quality in-situ restoration method.
Background
Along with the rapid development of social economy in China, the contradiction between water resources and industrialization is increasingly prominent, and because of the pollution of industrial wastewater, domestic sewage and agricultural non-point sources, the pollution of the water resources in China, especially the environmental pollution of surface water, is increasingly serious. Groundwater in seven water systems, main lakes, offshore areas and partial areas in China is polluted to different degrees, and the pollution characteristics are mainly represented by the overproof total phosphorus, total nitrogen, chemical oxygen demand and heavy metals. The composite pollution causes the water environment problems in China, and has wide influence range, serious harm and great treatment difficulty.
The cause of water resource deterioration is based on point source pollution on one hand. China has wide territory and large population, and the urbanization level is lower at present. Water pollution control technology and supervision on administrative levels of counties and towns are not in place all year round, so that a large amount of domestic and industrial wastewater is discharged only through simple primary or secondary treatment or even without any treatment, and point source pollution is caused. Besides point source pollution, non-point source pollution in China is very severe, especially rainfall runoff pollution. The knowledge and culture quality of rural population is relatively low, environmental protection and sanitation consciousness are lacked, a large amount of domestic garbage is randomly discarded, domestic sewage is randomly discharged, and pollutants are flushed with the ground surface along with rainfall to flow along with the ground surface and pollute rivers or lakes.
In the river water body treatment and black and odorous water body treatment processes, a common phenomenon is that the process technology used by modern sewage and water treatment technology factories is simply copied into the river treatment after being reduced or enlarged in scale. This requires expensive equipment and material costs, often because the operation manager is unable to bear huge equipment maintenance and operating expenses, leads to the time of acceptance, and the water body returns black and smelly again after the project is finished. The other extreme is that a large amount of water treatment agent is simply and roughly sprayed on the river surface and the lake surface, and the ecological water body is used as an open-air water treatment reactor. Because the natural water body can not be fully mixed with the applied water treatment medicament, the expected effect can be achieved by adding several times of equivalent water treatment medicament, on one hand, the medicament cost is increased, and simultaneously, the toxic action of high-concentration medicament on water body organisms such as fish and the like can be caused, and the safety and health of water ecology are influenced. The simple and rough spraying on the water surface of the river or lake is directly carried out, and another serious consequence is that the pollutants in the water body are not really removed, heavy metals, phosphorus and other nutrient salts are just precipitated to the bottom sediment along with the water treatment agent, and the pollutants are finally released again to pollute the water body due to the complicated chemical and biological action in the bottom sediment.
Disclosure of Invention
Technical problem to be solved
The invention aims to provide a riverway water quality in-situ remediation system and a riverway water quality in-situ remediation method, which solve the problems that natural water cannot be fully mixed with applied water treatment agents and water pollutants cannot be truly removed in the conventional riverway water body treatment and black and odorous water body treatment.
(II) technical scheme
In order to solve the technical problems, the invention provides a riverway water quality in-situ remediation system which comprises an upstream riverway, a downstream riverway and a deepened and widened riverway arranged between the upstream riverway and the downstream riverway, wherein a water retaining dam is arranged between the upstream riverway and the deepened and widened riverway, a vacuum water passing pipeline is arranged through the water retaining dam, two ends of the vacuum water passing pipeline are respectively and correspondingly communicated with the upstream riverway and the deepened and widened riverway, and a plurality of medicine feeding pipelines are connected onto the vacuum water passing pipeline.
Further, the vacuum water passing pipeline comprises a first horizontal section, a vertical section and a second horizontal section which are sequentially connected, one end of the first horizontal section is communicated with the upstream river channel, the other end of the first horizontal section is connected with the upper end of the vertical section, the lower end of the vertical section is connected with one end of the second horizontal section, the other end of the second horizontal section is communicated with the deepened river channel, and the first horizontal section or the second horizontal section penetrates through the water blocking dam.
Specifically, the first horizontal segment is connected with the vertical segment through a first pipeline elbow, and the vertical segment is connected with the second horizontal segment through a second pipeline elbow.
Further, still include with advance medicine bucket that medicine pipeline links to each other.
Furthermore, a control valve is arranged on the medicine inlet pipeline.
In order to solve the technical problems, the invention also provides a riverway water quality in-situ remediation method, which adopts the riverway water quality in-situ remediation system and comprises the following steps:
setting a deepened and widened river channel between an upstream river channel and a downstream river channel, wherein the depth of the deepened and widened river channel is respectively greater than the depth of the upstream river channel and the depth of the downstream river channel, and the width of the deepened and widened river channel is respectively greater than the width of the upstream river channel and the width of the downstream river channel;
establishing a water retaining dam on the river section between the upstream river channel and the deepened and widened river channel;
arranging a vacuum water passing pipeline below the horizontal planes of the upstream riverway and the deepened and widened riverway, wherein the vacuum water passing pipeline penetrates through the water retaining dam;
a medicine inlet is arranged on the vacuum water passing pipeline, the medicine inlet is connected with a medicine inlet pipeline, and the medicine inlet pipeline is connected with a medicine inlet barrel;
when the river water rapidly flows through the vacuum water passing pipeline, the water treatment agent in the medicine inlet barrel enters the medicine inlet pipeline and is then rapidly and fully mixed with the river water in the vacuum water passing pipeline.
Further, still include: and carrying out periodical desilting on the deepened and widened river channel.
Further, the water treatment agent is an oxidizing disinfectant, a flocculating agent, a coagulant aid, or a mixture thereof.
Specifically, the vacuum water passing pipeline is sequentially provided with three medicine inlets from the upstream river channel to the deepened and widened river channel in the extending direction, and the three medicine inlets are respectively and correspondingly applied with a flocculating agent, a coagulant aid and an oxidation disinfectant.
Further, the oxidizing disinfectant is sodium hypochlorite, chlorine, hydrogen peroxide, bleaching powder, ozone, potassium permanganate or chlorine dioxide; the flocculating agent is aluminum salt, ferric salt, ferrous salt, polymeric aluminum, polymeric iron, slaked lime, dithiocarbamate or xanthate; the coagulant aid is anionic polyacrylamide or cationic polyacrylamide.
Specifically, the length of the vacuum water passing pipe is 5-50m, and the inner diameter of the vacuum water passing pipe is 100-300 mm;
1-3 medicine inlets are formed in the vacuum water passing pipeline, each medicine inlet is sequentially arranged along the extending direction of the vacuum water passing pipeline 5, and the distance between every two adjacent medicine inlets is more than or equal to 2 m;
the volume value of cubic meter of the product of the length, the width and the water depth of the deepened and widened river channel is 0.2-2 times of the flow value of the river per cubic meter per hour, and the area value of square meter of the product of the width and the water depth of the deepened and widened river channel is 0.33-3.3 times of the flow value of the river per cubic meter per minute.
(III) advantageous effects
The technical scheme of the invention has the following advantages:
the river water in-situ remediation system and the river water in-situ remediation method provided by the invention have the advantages that the deepened and widened river channel is arranged between the upstream river channel and the downstream river channel, the water retaining dam is arranged between the upstream river channel and the deepened and widened river channel, the vacuum water passing pipeline penetrates through the water retaining dam, the upstream river water flows into the deepened and widened river channel behind the water retaining dam through the vacuum water passing pipeline, the water treatment agent is introduced into the vacuum water passing pipeline through the medicine inlet pipeline, and the water treatment agent and the river water are quickly and fully mixed. The in-situ riverway water quality restoration system and the method can efficiently remove water pollutants such as suspended matters, ammoniacal nitrogen, phosphorus, COD (chemical oxygen demand), various heavy metals and the like in the riverway water body, comprehensively improve the riverway water quality, and can be widely applied to water restoration and emergency treatment of riverways and lakes.
Drawings
FIG. 1 is a front view of a riverway water quality in-situ remediation system according to an embodiment of the invention;
FIG. 2 is a top view of a system for in situ remediation of river water according to an embodiment of the invention, shown in FIG. 1;
fig. 3 is a left side view of fig. 1 of the in-situ riverway water quality restoration system in the embodiment of the invention.
In the figure: 1: an upstream waterway; 2: a downstream waterway; 3: deepening and widening the river channel; 4: a water retaining dam; 5: a vacuum water passing pipeline; 501: a first horizontal segment; 502: a vertical section; 503: a second horizontal segment; 6: a medicine inlet pipeline; 7: a medicine inlet barrel; 8: a first pipe elbow; 9: a second pipe elbow; 10: and (4) controlling the valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1 to 3, an embodiment of the present invention provides an in-situ riverway water quality restoration system, which includes an upstream riverway 1, a downstream riverway 2, and a deepened and widened riverway 3 disposed between the upstream riverway 1 and the downstream riverway 2, wherein the deepened and widened riverway 3 is greater than the depths of the upstream riverway 1 and the downstream riverway 2, and the width of the deepened and widened riverway 3 is greater than the widths of the upstream riverway 1 and the downstream riverway 2, so that the deepened and widened riverway 3 has a precipitation function.
A water retaining dam 4 is arranged between the upstream river channel 1 and the deepened and widened river channel 3, and the water retaining dam 4 can be built by soil, steel, concrete, gravel or sand bags.
And a vacuum water passing pipeline 5 is arranged through the water blocking dam 4, and two ends of the vacuum water passing pipeline 5 are correspondingly communicated with the upstream river channel 1 and the deepened and widened river channel 3 respectively.
The retaining dam 4 is hermetically connected with the vacuum water passing pipe 5, so that all the river water of the upstream river channel 1 can only flow into the deepened and widened river channel 3 through the vacuum water passing pipe 5. The vacuum water passing pipe 5 can be one or more according to actual requirements. The length of each vacuum water passing pipe 5 can be adjusted and set at will according to actual requirements, and is preferably set to be 5-50 m. The inner diameter of each vacuum water passing pipe 5 can be adjusted and set at will according to actual requirements, and is preferably set to be 100-300 mm.
The vacuum water passing pipe 5 is provided with a plurality of medicine inlets which are connected with a medicine inlet pipe 6. The medicine inlet can be provided with a pipeline mixer for connecting with the medicine inlet pipeline 6.
The number of the medicine inlets arranged on each vacuum water passing pipe 5 can be adjusted at will according to the implementation requirements, and is preferably 1-3. Each medicine inlet is arranged along the extending direction of the vacuum water passing pipe 5 in sequence, and the distance between two adjacent medicine inlets is preferably set to be more than or equal to 2 m.
The medicine inlet pipeline 6 is connected with the medicine inlet barrel 7. The number of the medicine inlet barrels 7 can be equal to the number of the medicine inlet pipelines 6, and each medicine inlet pipeline 6 is correspondingly connected with each medicine inlet barrel 7 one by one.
The medicine inlet barrel 7 is internally provided with a water treatment medicament, when river water rapidly flows through the vacuum water passing pipeline 5, high-speed water flow can cause negative pressure at the medicine inlet, so that the water treatment medicament in the medicine inlet barrel 7 is sucked into the vacuum water passing pipeline 5 through the medicine inlet pipeline 6 and is rapidly and fully mixed with the river water under the action of high-flow-rate water flow in the pipeline or a pipeline mixer. Of course, the medicine can be taken by adopting a pump force conveying mode or a gravity conveying mode.
Through this embodiment riverway water quality normal position repair system, can carry out the high efficiency to water pollutants such as suspended solid, ammoniacal nitrogen, phosphorus, COD and various heavy metals in the riverway water and get rid of, promote riverway water quality comprehensively, can wide application in the water body restoration and the emergency treatment of river course and lake.
Further, the vacuum water passing pipe 5 can adopt a straight pipe or a bent pipe.
In the specific embodiment of the present application, the vacuum water passing pipe 5 is preferably a bent pipe. The vacuum water passing pipeline 5 comprises a first horizontal section 501, a vertical section 502 and a second horizontal section 503 which are sequentially connected, one end of the first horizontal section 501 is communicated with the upstream river channel 1, the other end of the first horizontal section 501 penetrates through the water blocking dam 4 and is connected with the upper end of the vertical section 502, the lower end of the vertical section 502 is connected with one end of the second horizontal section 503, and the other end of the second horizontal section 503 is communicated with the deepened and widened river channel 3.
Of course, the first horizontal segment 501 and the vertical segment 502 may also be respectively disposed in the upstream river channel 1, so that the second horizontal segment 503 passes through the retaining dam 4 and is communicated with the deepened and widened river channel 3.
The vacuum water passing pipeline 5 is arranged to be of an elbow structure consisting of a first horizontal section 501, a vertical section 502 and a second horizontal section 503, so that the actual path of river water flowing through the elbow is longer than that of a straight pipe under the same horizontal displacement of the vacuum water passing pipeline 5, and water treatment chemicals are more fully mixed with the river water in the pipeline.
Specifically, the first horizontal segment 501 is connected to the vertical segment 502 through a first pipe elbow 8, and the vertical segment 502 is connected to the second horizontal segment 503 through a second pipe elbow 9.
In the specific embodiment of the present application, three medicine inlets are preferably arranged on the vacuum water passing pipe 5, and the three medicine inlets are respectively and correspondingly connected with the three medicine inlet pipes 6. The first horizontal segment 501 is provided with two medicine inlets, the two medicine inlets are arranged in the upstream river channel 1, and the two medicine inlets are respectively connected with the two medicine inlet pipelines 6 correspondingly. The second horizontal segment 503 is provided with a drug inlet, which is arranged in the deepened and widened river channel 3 and is connected with the drug inlet pipeline 6.
Further, each of the drug inlet pipes 6 is provided with a control valve 10 for regulating and controlling the flow rate of the water treatment agent.
In addition, if the river is a stationary water body, a submersible pump may be installed on the vacuum water passage pipe 5, and the stationary water body is driven by the submersible pump to flow from the upstream river 1 through the vacuum water passage pipe 5 into the deepened and widened river 3 and finally into the downstream river 2.
The in-situ riverway water quality repairing system is simple in structure, does not need to be provided with expensive water treatment equipment, and does not need to bear huge equipment maintenance and operation cost. Except that the submersible pump is needed in a static water body, the in-situ riverway water quality restoration system can realize water quality restoration by utilizing power of natural flowing of the water body, almost no external power and energy are needed, and the cost is lower.
The embodiment of the invention also provides a riverway water quality in-situ remediation method, which adopts the riverway water quality in-situ remediation system of the embodiment, and the method specifically comprises the following steps:
a deepened and widened river channel 3 is arranged between the upstream river channel 1 and the downstream river channel 2, so that the depth of the deepened and widened river channel 3 is respectively greater than the depth of the upstream river channel 1 and the depth of the downstream river channel 2, and the width of the deepened and widened river channel 3 is respectively greater than the width of the upstream river channel 1 and the width of the downstream river channel 2.
And establishing a water retaining dam 4 on the river section between the upstream river channel 1 and the deepened and widened river channel 3.
And a vacuum water passing pipeline 5 is arranged below the levels of the upstream riverway 1 and the deepened and widened riverway 3, and the vacuum water passing pipeline 5 penetrates through the water retaining dam 4.
The vacuum water passing pipe 5 is provided with a medicine inlet which is connected with a medicine inlet pipe 6, and the medicine inlet pipe 6 is connected with a medicine inlet barrel 7.
When the river water rapidly flows through the vacuum water passing pipe 5, the water treatment agent in the medicine inlet barrel 7 enters the medicine inlet pipe 6, and then the water treatment agent is rapidly and fully mixed with the river water in the vacuum water passing pipe 5.
Further, the water treatment agent is an oxidizing disinfectant, a flocculating agent, a coagulant aid, or a mixture thereof. The oxidation disinfectant, the flocculating agent and the coagulant aid can be respectively and correspondingly placed in the three medicine inlet barrels 7. The oxidizing disinfectant, the flocculating agent and the coagulant aid can also be mixed and then placed in the same medicine inlet barrel 7. The water treatment agent is conveyed to the agent inlet through the agent inlet pipeline 6, so that the water treatment agent is fully and quickly mixed with river water in the vacuum water passing pipeline 5 and plays a specific purification function.
In the specific embodiment of this application, vacuum sewer pipe 5 is in the upper reaches river course 1 extremely deepen to be equipped with three in proper order on widening the extending direction in river course 3 enter the medicine mouth, three it is from left to right to enter the medicine mouth and correspond respectively to apply and carry flocculating agent, coagulant aid and oxidation disinfectant. Wherein, the medicine inlet for conveying the coagulant aid is arranged behind the medicine inlet for conveying the flocculant, and the distance between the medicine inlet for conveying the coagulant aid and the medicine inlet for conveying the flocculant needs to meet the requirement that suspended particles in river water are fully destabilized and flocculated under the action of the flocculant in the vacuum water passing pipeline 5 and then the coagulant aid can be added, so the distance between the two medicine inlets is preferably more than 2 m.
Further, the oxidizing disinfectant can adopt sodium hypochlorite, chlorine, hydrogen peroxide, bleaching powder, ozone, potassium permanganate or chlorine dioxide, and other oxidizing disinfectants can also be adopted according to actual requirements.
Further, the flocculant can be aluminum salt, ferric salt, ferrous salt, polymeric aluminum, polymeric iron, hydrated lime, dithiocarbamate or xanthate, and of course, other flocculants can be used according to actual needs.
Further, the coagulant aid can be anionic polyacrylamide or cationic polyacrylamide, and other coagulant aids can be adopted according to actual needs.
When the flocculating agent is a ferrous salt, in a preferred embodiment, the flocculating agent and the oxidizing disinfectant can be used in combination, that is, the flocculating agent and the oxidizing disinfectant are respectively conveyed to corresponding medicine inlets through different medicine inlet pipelines 6. In another preferred embodiment, the water treatment agent only adopts flocculating agent, and then the river water is aerated before and after the ferrite is applied.
In the embodiment of this application, through deepening widen river course 3 to the river is in water flows through in the vacuum sewer pipe 5 through adding medicine destabilization, flocculation and the water suspended particles who reunites flows in behind the vacuum sewer pipe 5 deepen widen among the river course 3, and can deepen widen and obtain effective sediment because of rivers reduce rapidly in the river course 3. Therefore, the length of the river channel 3 is deepened and widened to ensure that the hydraulic retention time of the river water flowing through the river channel section reaches 12-120min, and the flow velocity of the water flow is preferably 5-50 mm/s. Therefore, the product value (unit: m) of the length, the width and the water depth of the deepened and widened river channel 33) The flow rate per hour of the river (unit: m is3Preferably 0.2 to 2 times the amount of the catalyst/h). The cross-sectional area value (the product value of the width and the water depth, unit: m) of the deepened and widened river channel 32) The flow rate per minute of the river (unit: m is3Preferably 0.33 to 3.3 times/min).
Furthermore, the deepened and widened river channel 3 needs to be subjected to regular and timely dredging treatment, and sludge is removed or sucked away, so that not only can the precipitation function of the deepened and widened river channel 3 be maintained, but also the real removal of water pollutants such as heavy metals, phosphorus and other nutrient salts is realized.
Compared with the prior art that a large amount of water treatment agents are directly sprayed on river surfaces and lake surfaces, the applied water treatment agents and natural water bodies to be purified are fully and quickly mixed, so that the water treatment agents with the same concentration in conventional water treatment equipment only need to be added, the expected ideal decontamination effect can be achieved, the medicine cost is obviously reduced, and meanwhile, the water body organisms such as fishes and the like and the water ecology are effectively protected.
The in-situ riverway water quality restoration system and the riverway water quality restoration method are described in the following two specific examples.
Example one
In a river channel of a certain country, a suitable section is selected and a retaining dam is constructed by sand bags, wherein the width of the river channel is 3m, the water depth is 1.0m, the flow is 320m3/h, and the flow speed is 30 mm/s. A vacuum water passing pipe with the inner diameter of 200mm and the horizontal length of 10m is arranged below the horizontal plane of the river channel, so that the water retaining dam penetrates through the middle 1/2 of the vacuum water passing pipe. The vacuum water passing pipe is hermetically connected with the barrage, and all river water needs to flow through the barrage through the vacuum water passing pipe. And selecting a river section 20m behind the water retaining dam, digging the river section downwards to a depth of 2.0m, and digging the river section leftwards and rightwards to a width of 6.0m to deepen and widen the river channel.
The water inlet end of the vacuum water passing pipeline is arranged at a position 0.4m below the water surface, penetrates through the water retaining dam, is vertically arranged for 2.0m downwards through the elbow, and then horizontally extends forwards for 5.0 m. The vacuum water passing pipe is provided with three medicine inlets which are respectively arranged at the positions 1.0m, 2.0m and 8.0m away from the water inlet end of the vacuum water passing pipe. Three medicine inlets are respectively connected with three 2.0m medicine inlets through medicine inlet pipelines3The bottoms of the medicine inlet barrels are connected. The three medicine feeding barrels are all arranged on the river bank and are 2.0m higher than the river level. The outlet of the medicine inlet barrel is provided with a control valve for regulating the flow of the medicine.
When the river water rapidly flows through the vacuum water passing pipeline, negative pressure of the medicine inlet is caused by high-speed water flow, and the gravity fall between the medicine inlet barrel and the river surface drives the water treatment agent in the medicine inlet barrel to enter the vacuum water passing pipeline through the medicine inlet pipeline, so that the water treatment agent is rapidly and fully mixed with the river water in the vacuum water passing pipeline. The water treatment agents in the three medicine feeding barrels respectively correspond to water treatment grade sodium hypochlorite (10 percent of available chlorine), polyaluminum sulfate (10 percent of available aluminum) and anionic polyacrylamide (0.5 percent and the molecular weight of the polyacrylamide is sixteen thousand).
The application amounts of sodium hypochlorite, polyaluminium sulfate and anionic polyacrylamide are respectively controlled at 60-80L/hr, 60-80L/hr and 20-30L/hr by adjusting the opening size of the control valve. River water crosses the water retaining dam through the vacuum water passing pipeline and turns downwards, and flows out from the bottom of the deepened and widened river channel, and the river water flow speed is 10 mm/s. The suspended particles, phosphorus and trace heavy metals in the river water are flocculated and rapidly precipitated in the deepened and widened river channel and are efficiently removed. Every month, the deepened and widened river channel is subjected to once desilting, and sludge is removed to keep the precipitation function of the deepened and widened river channel.
The result shows that the in-situ riverway water quality restoration system and the method can effectively remove suspended particulate matters, ammoniacal nitrogen, phosphorus and COD in the riverway water. The river turbidity is from 50NTU to below 5.0 NTU. The ammonia nitrogen, phosphorus and COD are respectively reduced from 5.2mg/L, 2.5mg/L and 40mg/L to 1.4mg/L, 0.08mg/L and 16mg/L, and the removal efficiency is respectively 73 percent, 96.8 percent and 60 percent.
Example two
In a river course of a certain country, a proper section is selected and two retaining dams are constructed by sand bags, wherein the width of the river course is 5m, the water depth is 1.0m, the flow is 400m3/h, the flow speed is 22mm/s, the distance between the two retaining dams is 40m, and 3 aeration oxygen increasing machines are arranged between the two retaining dams. The two retaining dams are respectively a first retaining dam and a second retaining dam from front to back.
A first vacuum water passing pipe with the inner diameter of 200mm and the horizontal length of 5m is arranged below the horizontal plane and penetrates through the first water blocking dam, so that the position 1/2 of the middle of the first vacuum water passing pipe penetrates through the first water blocking dam. A first medicine inlet is arranged at a position 1.0m away from the water inlet end of the first vacuum water passing pipe and is used for applying ferrous sulfate (10%), and the flow rate is 100L/h.
A second vacuum water passing pipe with the inner diameter of 200mm and the horizontal length of 5m is arranged below the horizontal plane through the second water blocking dam, so that the position 1/2 of the middle of the second vacuum water passing pipe penetrates through the first water blocking dam. A second medicine inlet is arranged at a position 1.0m away from the water inlet end of the second vacuum water passing pipe, and is used for applying polyacrylamide (0.5%) at a flow rate of 40L/h. The water inlet end of the second vacuum water passing pipeline is arranged at a position 0.4m below the water surface, the second vacuum water passing pipeline penetrates through the second water retaining dam, is vertical downwards by 2.0m through an elbow, and then horizontally extends forwards by 3.0 m. And selecting a river section 20m behind the second water retaining dam, digging the river section downwards to the depth of 2.0m, and digging the river section leftwards and rightwards to the width of 6.0m to deepen and widen the river channel.
River water is fully mixed with ferrous sulfate in the first vacuum water passing pipeline firstly, then passes through the first water retaining dam, then flows into a river channel area between the first water retaining dam and the second water retaining dam, enters the second vacuum water passing pipeline after being aerated by the aeration aerator in the river channel area, and passes through the second water retaining dam after being fully mixed with polyacrylamide in the second vacuum water passing pipeline and turns downwards, and then flows out from the bottom of a deepened and widened river channel, and the river water flow speed is 9 mm/s. The suspended particles, phosphorus and trace heavy metals in the river water are flocculated and rapidly precipitated in the deepened and widened river channel and are efficiently removed. Every month, the deepened and widened river channel is subjected to once desilting, and sludge is removed to keep the precipitation function of the deepened and widened river channel.
The result shows that by adopting the in-situ riverway water quality restoration system and the method, suspended particles and phosphorus in river water can be effectively removed. The river turbidity is reduced from 50NTU to below 4.0NTU, the phosphorus is reduced from 2.0mg/L to 0.12mg/L, and the removal efficiency reaches 94.0%.
In summary, the in-situ riverway water quality restoration system and the method provided by the embodiment of the invention realize rapid and sufficient mixing of the water treatment agent and the river water, can efficiently remove water pollutants such as suspended matters, ammonia nitrogen, phosphorus, COD (chemical oxygen demand) and various heavy metals in the riverway water body, comprehensively improve the riverway water quality, and can be widely applied to water restoration and emergency treatment of riverways and lakes.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, unless otherwise specified, "a plurality" means one or more; "plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a river course quality of water normal position repair system, its characterized in that is in including upper reaches river course, low reaches river course and setting the river course is widened in the deepening between upper reaches river course and the low reaches river course the upper reaches river course with deepening is widened and is equipped with the water blocking dam between the river course, passes the water blocking dam is equipped with the vacuum sewer pipe, the both ends of vacuum sewer pipe respectively with the upper reaches river course widen the river course and correspond the intercommunication, be connected with a plurality of medicine inlet pipeline on the vacuum sewer pipe.
2. The in-situ riverway water quality repairing system according to claim 1, wherein the vacuum water passing pipeline comprises a first horizontal section, a vertical section and a second horizontal section which are connected in sequence, one end of the first horizontal section is communicated with the upstream riverway, the other end of the first horizontal section is connected with the upper end of the vertical section, the lower end of the vertical section is connected with one end of the second horizontal section, the other end of the second horizontal section is communicated with the deepened and widened riverway, and the first horizontal section or the second horizontal section penetrates through the water blocking dam.
3. The in-situ riverway water quality repairing system according to claim 2, wherein the first horizontal section is connected with the vertical section through a first pipeline elbow, and the vertical section is connected with the second horizontal section through a second pipeline elbow.
4. The in-situ riverway water quality repairing system according to claim 1, further comprising a medicine feeding barrel connected with the medicine feeding pipeline; and a control valve is arranged on the medicine inlet pipeline.
5. An in-situ riverway water quality restoration method is characterized in that the method adopts the riverway water quality in-situ restoration system as defined in any one of claims 1 to 4, and the method comprises the following steps:
setting a deepened and widened river channel between an upstream river channel and a downstream river channel, wherein the depth of the deepened and widened river channel is respectively greater than the depth of the upstream river channel and the depth of the downstream river channel, and the width of the deepened and widened river channel is respectively greater than the width of the upstream river channel and the width of the downstream river channel;
establishing a water retaining dam on the river section between the upstream river channel and the deepened and widened river channel;
arranging a vacuum water passing pipeline below the horizontal planes of the upstream riverway and the deepened and widened riverway, wherein the vacuum water passing pipeline penetrates through the water retaining dam;
a medicine inlet is arranged on the vacuum water passing pipeline, the medicine inlet is connected with a medicine inlet pipeline, and the medicine inlet pipeline is connected with a medicine inlet barrel;
when the river water rapidly flows through the vacuum water passing pipeline, the water treatment agent in the medicine inlet barrel enters the medicine inlet pipeline and is then rapidly and fully mixed with the river water in the vacuum water passing pipeline.
6. The in-situ riverway water quality remediation method of claim 5 wherein the water treatment agent is an oxidizing disinfectant, a flocculating agent, a coagulant aid or a mixture thereof.
7. The method for in-situ remediation of river water quality according to claim 5, wherein the vacuum water passing pipeline is provided with three drug inlets in sequence from the upstream river to the deepened and widened river, and the three drug inlets are respectively and correspondingly applied with a flocculating agent, a coagulant aid and an oxidizing disinfectant.
8. The in-situ riverway water quality repairing method according to any one of claims 6 to 7, wherein the oxidizing disinfectant is sodium hypochlorite, chlorine, hydrogen peroxide, bleaching powder, ozone, potassium permanganate or chlorine dioxide; the flocculating agent is aluminum salt, ferric salt, ferrous salt, polymeric aluminum, polymeric iron, slaked lime, dithiocarbamate or xanthate; the coagulant aid is anionic polyacrylamide or cationic polyacrylamide.
9. The in-situ riverway water quality restoration method according to claim 5, further comprising: and carrying out periodical desilting on the deepened and widened river channel.
10. The in-situ riverway water quality restoration method according to claim 5,
the length of the vacuum water passing pipe is 5-50m, and the inner diameter of the vacuum water passing pipe is 100-300 mm;
1-3 medicine inlets are formed in the vacuum water passing pipeline, each medicine inlet is sequentially arranged along the extending direction of the vacuum water passing pipeline 5, and the distance between every two adjacent medicine inlets is more than or equal to 2 m;
the volume value of cubic meter of the product of the length, the width and the water depth of the deepened and widened river channel is 0.2-2 times of the flow value of the river per cubic meter per hour, and the area value of square meter of the product of the width and the water depth of the deepened and widened river channel is 0.33-3.3 times of the flow value of the river per cubic meter per minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811564935.7A CN109626634B (en) | 2018-12-20 | 2018-12-20 | Riverway water quality in-situ remediation system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811564935.7A CN109626634B (en) | 2018-12-20 | 2018-12-20 | Riverway water quality in-situ remediation system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109626634A CN109626634A (en) | 2019-04-16 |
| CN109626634B true CN109626634B (en) | 2020-05-19 |
Family
ID=66075942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811564935.7A Active CN109626634B (en) | 2018-12-20 | 2018-12-20 | Riverway water quality in-situ remediation system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109626634B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111559829A (en) * | 2020-05-19 | 2020-08-21 | 钟乃聪 | Environment-friendly black smelly river normal position purifier in city convenient to build |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7084521B1 (en) * | 2005-02-17 | 2006-08-01 | Martin Gerald G | Method and apparatus for generating hydro-electric power |
| CN101254991A (en) * | 2008-03-28 | 2008-09-03 | 合肥工业大学 | Method for controlling lake eutrophication by eliminating river or aqueduct pollution |
| CN101905920B (en) * | 2010-08-05 | 2012-05-23 | 南京大学 | Method for performing emergency treatment of water with excessive iron and manganese by using diversion channel |
| CN105565589A (en) * | 2015-12-14 | 2016-05-11 | 哈尔滨工业大学 | Built-in biochemical-ecological system based on in-river rainwater runoff purification river bank |
| CN206858377U (en) * | 2017-07-04 | 2018-01-09 | 武汉中科水生环境工程股份有限公司 | A kind of roller ecology overflow dam |
| CN107226559B (en) * | 2017-08-01 | 2020-10-30 | 诸暨市秀珠建材有限公司 | Artificial lake water body balancing device and construction method thereof |
| CN207845376U (en) * | 2018-01-17 | 2018-09-11 | 高一诺 | Wastewater treatment vehicle and Sewage Disposal |
-
2018
- 2018-12-20 CN CN201811564935.7A patent/CN109626634B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109626634A (en) | 2019-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102531289B (en) | On-site purification system for urban black and smelly inland rivers | |
| CN106542701A (en) | For the method for purifying water in river course | |
| Wang et al. | Analysis on the characteristics of water pollution caused by underground mining and research progress of treatment technology | |
| CN101254991A (en) | Method for controlling lake eutrophication by eliminating river or aqueduct pollution | |
| CN105645593B (en) | A kind of high risk urban river water quality safety guarantee and landscape constructing technology | |
| CN109665677A (en) | A kind of terrace-type garbage percolation liquid treating system | |
| CN110468776B (en) | Device for enhancing river channel undercurrent exchange | |
| CN108911461A (en) | A kind of mercury object original position abatement disposition ship | |
| CN109626634B (en) | Riverway water quality in-situ remediation system and method | |
| CN204824535U (en) | Fragrant of rubbish concentrate two -stage and BAF advanced treatment equipment | |
| CN101182060A (en) | Purification treatment method for natural water | |
| CN208136034U (en) | A kind of in-situ treatment system for river discharge outlet | |
| CN210974327U (en) | In-situ purification device for urban black and odorous river water | |
| CN111392964A (en) | Method and device for treating sewage of rain and sewage combined pump station | |
| EP2559663B1 (en) | Method for removing polluting substances from water streams by oxygen injection in a flotation basin | |
| CN204824536U (en) | High -efficient advanced oxidation treatment equipment of rubbish concentrate | |
| CN206204118U (en) | For the processing system of black and odorous water | |
| CN110171903A (en) | City micropolluted river water processing method and system | |
| CN107364953B (en) | A kind of duct type sewage disposal system | |
| CN210620502U (en) | Urban micro-polluted river water treatment system | |
| CN205933347U (en) | Efficient water treatment equipment | |
| CN102583740B (en) | Tidal river surge water treatment device | |
| CN210764871U (en) | Small-size riverway water body repair system | |
| CN207330649U (en) | A kind of sewage disposal system using moving bed biofilm reactor | |
| CN106186238A (en) | Efficient water treatment equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |