CN111908714A - Cruising type river water purification system on water surface - Google Patents
Cruising type river water purification system on water surface Download PDFInfo
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- CN111908714A CN111908714A CN202010686875.7A CN202010686875A CN111908714A CN 111908714 A CN111908714 A CN 111908714A CN 202010686875 A CN202010686875 A CN 202010686875A CN 111908714 A CN111908714 A CN 111908714A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 193
- 238000000746 purification Methods 0.000 title claims abstract description 29
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 63
- 239000001301 oxygen Substances 0.000 claims abstract description 63
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 63
- 239000000945 filler Substances 0.000 claims abstract description 52
- 238000005273 aeration Methods 0.000 claims abstract description 50
- 238000004062 sedimentation Methods 0.000 claims abstract description 23
- 238000005192 partition Methods 0.000 claims abstract description 18
- 238000007667 floating Methods 0.000 claims abstract description 12
- 238000004364 calculation method Methods 0.000 claims abstract description 8
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 12
- 239000000126 substance Substances 0.000 claims description 12
- 229920006395 saturated elastomer Polymers 0.000 claims description 9
- 239000000523 sample Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 8
- 238000013461 design Methods 0.000 description 9
- 239000010802 sludge Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
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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
-
- 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
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/009—Apparatus with independent power supply, e.g. solar cells, windpower or fuel cells
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/008—Mobile apparatus and plants, e.g. mounted on a vehicle
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/02—Temperature
-
- 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
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/22—O2
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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)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Biological Treatment Of Waste Water (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
- Activated Sludge Processes (AREA)
Abstract
The invention relates to a cruising type river water purification system on water surface, which comprises a box body, wherein the front part and the rear part of the box body are respectively provided with a water inlet and a water outlet, the box body is externally connected with a floating water supporting body, and a biological filler area, a sedimentation area and a drainage pump are sequentially arranged in the box body from the water inlet to the water outlet; the biological filler area and the sedimentation area are separated by a partition plate, and the top of the partition plate is higher than the top surface of the filler of the biological filler area; the bottom of the biological filler area is provided with a uniform aeration outlet; the aeration outlet discharges air according to the air discharge requirement; in the calculation of the air output requirement, the theoretical oxygen demand is calculated firstly, and then the air output of the aeration outlet is calculated by taking the theoretical oxygen demand as a parameter. The invention has the advantages that the purification system floats in the target water body, and the river water is automatically filled into the biological filler area of the purification system through the water inlet arranged at the front end of the system, so that the serious pollution area can be purified in a targeted manner, and the long-acting and reliable purification effect of the whole water body is kept.
Description
Technical Field
The invention relates to the technical field of water purification of black and odorous riverways in environmental protection, in particular to a cruising river water purification system on water surface.
Background
The problem of water pollution caused by rapid development of economy is receiving more and more attention, and the problem of eutrophication has become the biggest threat to surface water in the world. The urban inland rivers and landscape water bodies are particularly seriously polluted due to the characteristics of small water quantity, poor liquidity, complex pollution source, small water environment capacity and the like, and a plurality of water bodies have the phenomena of stagnant flow, anaerobism, poor reoxygenation capability, serious siltation, low transparency, black and odor and the like, so that the ecological functions and the landscape functions of the water bodies are declined or even lost, and the damage of the aquatic ecological environment becomes a main obstacle for the construction of urban ecological civilization. At present, the treatment of black and odorous water is mainly concentrated on an engineering sewage interception admission pipe and a side branch water treatment system for treatment, and the phenomena of incomplete treatment and repeated black and odorous water are often caused. For the in-situ treatment of the water body, technologies such as ecological floating island and water body aeration are mostly adopted, and due to the fact that the technical processes of the technology, fish and dragon are mixed and the construction is difficult, the treatment effect is uneven, the treatment cost is high, and the operation and maintenance are complex.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and solve the problems that the existing water body is lack of local pertinence and poor in treatment effect.
In order to achieve the purpose, the invention provides a cruising type river water purification system, which comprises a box body, wherein the front part and the rear part of the box body are respectively provided with a water inlet and a water outlet, the box body is externally connected with a floating water supporting body, and a biological filler area, a sedimentation area and a drainage pump are sequentially arranged in the box body from the water inlet to the water outlet; the biological filler area and the sedimentation area are separated by a partition plate, a gap for water to cross into the sedimentation area is reserved between the top of the partition plate and the top of the box body, and the top of the partition plate is higher than the top surface of the filler of the biological filler area; aeration outlets which are guided to the fillers are uniformly paved at the bottom of the biological filler area;
the aeration outlet discharges air according to the air discharge requirement; in the setting of the air output requirement, the theoretical oxygen demand is calculated firstly, and then the air output of the aeration outlet is calculated by taking the theoretical oxygen demand as a parameter;
wherein the theoretical oxygen demand is calculated by the following formula:
N=V[0.7+1.7(CoCOD-CeCOD)+4.57(CoNH3-N-CeNH3-N)+1.2(CeDO-
CoDO)]
wherein,
n is the theoretical oxygen demand of aeration;
v is the effective water quantity of river water in the biological filler area;
CoCOD is the chemical oxygen demand entering the river water;
CeCOD is the chemical oxygen demand of the discharged river water;
CoNH3n is the ammonia nitrogen concentration of the entering river water;
CeNH3n is the ammonia nitrogen concentration of the discharged river water;
CeDO is the dissolved oxygen concentration of the entering river water;
CoDO is the dissolved oxygen concentration of the discharged river water;
the calculation formula of the air output of the aeration outlet is as follows:
G=N*Cs*0.3*Ea/[α*(β*Cs-C0)*1.024(T-20)]
wherein,
g is the total amount of the air outlet of the aeration outlet;
cs is standard clear water saturated dissolved oxygen, and 9.17mg/L is taken;
ea is the oxygen utilization rate, and is 30 percent;
alpha is river water oxygen transfer coefficient/clear water oxygen transfer coefficient, and is taken as 0.8-0.85;
beta is the saturated dissolved oxygen value of river water/the saturated dissolved oxygen value of clear water, and is taken to be 0.9-0.97;
C0taking 2mg/L of residual dissolved oxygen of the designed river water;
t is the river water temperature.
The floating support body is a mechanism for providing floating force for the box body on the water surface, and can be a block body with low density, a propeller, an inflation bag and other structures. The box body is not necessarily a sealed body with a completely closed top, and can be modified according to requirements, so that the top can be a position concept. The biological filler area is filled with biological filler, the biological filler can be light suspended filler, and the filling rate can be designed to be 50-80%. The water inlet is generally arranged below the water surface so as to facilitate the entry of river water. And after flowing through the water inlet, the biological filler area and the sedimentation area, the river water is discharged through the water outlet by the drainage pump.
The acquisition mode of each parameter in the calculation is as follows: v is a value set during system design; CoCOD, CeCOD, CoNH3-N、CeNH3N, CeDO, CoDO and T are obtained after real-time measurement; cs, alpha, beta, C0Setting by combining design values, the values can be generally set as the recommended design values of a design manual for water supply and drainage (town drainage in volume 5); ea is the oxygen utilization rate, and 30 percent is taken as the oxygen utilization rate of the bottom aeration.
Preferably, a space is further arranged between the partition plate and the settling zone, and a rectifying wall with an open bottom is further erected on one side of the settling zone facing the space; and a plurality of inclined plates or inclined tube bodies which are parallel to each other are arranged in the sedimentation zone in a suspending way.
Inclined plates or inclined tube bodies in the settling zone, so that the settling zone is formed into a structure similar to an inclined plate settling tank. The water flow at the position crosses the top of the partition plate to enter the partition, then flows into the settling area from the bottom opening of the rectification wall, and upwards passes through the inclined plate or the inclined pipe body to become clean water for the drainage pump to lead out of the box body.
Preferably, the air source of the aeration outlet is an aeration fan, and the aeration fan is fixed on the water part at the top of the box body.
The aeration fan absorbs and guides air on the water surface to the aeration outlet, and the aeration fan and the aeration outlet can be communicated through a pipeline.
Preferably, the water inlet and the water outlet are internally provided with a measuring probe for measuring the chemical oxygen demand, the ammonia nitrogen concentration and the dissolved oxygen concentration of river water.
The chemical oxygen demand, ammonia nitrogen concentration and dissolved oxygen concentration measuring probes are arranged at the water inlet and the water outlet, and can be integrated detectors or independent detectors.
Preferably, a solar panel for providing electric energy is further fixed on the upper water part of the top of the box body.
The solar panel provides power output for each power utilization component of the system, and can also be matched with a storage battery or a municipal power grid.
Preferably, the bottom of the box body is provided with a propeller for providing moving force in water.
The propeller provides power for the whole system to run in water and can be driven by a motor and the like.
Preferably, the drainage pump is arranged in a drainage tank, and the drainage tank leads clean water out of the top of the sedimentation area.
The drain outlet of the drain pump leads to the water outlet. The drain tank may be provided in the cleaning water beside the settling zone or at the top of the settling zone.
Preferably, the drain pump is a submersible drain pump.
Preferably, the box body is made of light plastic materials.
The light plastic material can be PP, PE or ABS and other light stable materials.
Preferably, a thermometer for measuring the temperature of river water in the biological filler zone is distributed in the filler.
The thermometer can be in the forms of digital type, thermocouple type and the like, and reflects the river water temperature change through the modes of data transmission, display and the like.
The biological filler in the biological filler area is matched with aeration to realize aeration biological treatment on the polluted water; the settling zone is used for realizing mud-water separation and guiding clean water to the drainage pump. The box body and the floating support body form a whole, so that the system is ensured to float on the water surface, and the system can move freely in the water body.
Through the structure similar to an inclined plate sedimentation tank, a guide plate can be arranged below the sedimentation unit, so that water flows in and out, and the sedimentation effect is ensured. The settled sludge is stored at the bottom of the settling zone, so that the sludge is convenient to clean regularly.
The air source is arranged at the place with abundant air on the water surface, so that the continuous supply of aeration can be ensured.
By arranging the corresponding probes, the chemical oxygen demand, the ammonia nitrogen concentration and the dissolved oxygen concentration of the river water are monitored and measured before and after treatment, and the gas output of the aeration outlet of the system is convenient to adjust.
The solar energy power supply system is provided by the solar cell panel, can be matched with other power supplies of the system, and is not restricted by cables and wires in solar energy sufficient areas due to the fact that power is supplied only by solar energy, and the application range is enlarged.
The bottom of the box body is provided with the propeller, so that the disturbance to the water inlet body is reduced while the mobile power is provided, and the water quality purification effect is ensured.
Through setting up water drainage tank, collect the clean water, reduce the disturbance of drain pump to the settling zone.
By adopting the submersible drainage pump, the water surface structure can be reduced as much as possible, and the design difficulty of balance and buoyancy is reduced.
The box body is made of light plastic materials, so that the dead weight of the system is further reduced while the stability of the whole structure is ensured.
The thermometer is arranged in the biological filler area, so that the temperature of river water in the biological filler area can be measured and fed back in real time, and the system can be adjusted conveniently.
The whole system floats near the water surface by using the floating support body, water flows enter the box body and respectively flow through the biological filler area and the sedimentation area by self-flow, and finally water quality purification and discharge are realized; can realize free cruising in the water area, can purify the seriously polluted area in a targeted way, and keeps the long-acting and reliable purification effect of the whole water body.
Drawings
FIG. 1 is a schematic top view of a cruising river water purification system of the present invention;
FIG. 2 is a schematic front view of a cruising river water purification system of the present invention;
FIG. 3 is a cross-sectional view A-A of FIG. 1;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 1;
wherein:
1-box body 11-water inlet 12-water outlet
13-propeller 2-floating support 3-biological filler zone
31-aeration outlet 32-aeration fan 33-thermometer
4-settling area 41-drainage tank 5-drainage pump
6-partition plate 7-rectifying wall 8-probe
9-solar panel
Detailed Description
The invention is further described below with reference to the following figures and specific examples.
The cruising type river water purification system comprises a box body 1 made of PP materials, wherein a water inlet 11 and a water outlet 12 are respectively arranged at the front part and the rear part of the box body 1, a floating support body 2 is connected outside the box body 1, and a biological filler area 3, a sedimentation area 4 and a drainage pump 5 are sequentially arranged in the box body 1 from the water inlet 11 to the water outlet 12; the biological filler area 3 and the sedimentation area 4 are separated by a partition plate 6, a gap for water to cross into the sedimentation area 4 is reserved between the top of the partition plate 6 and the top of the box body 1, and the top of the partition plate 6 is higher than the top surface of the filler of the biological filler area 3; the bottom of the biological filler area 3 is uniformly paved with aeration outlets 31 which are guided to the filler.
The floating support body 2 is a foam strip block fixed at two symmetrical sides of the box body. The top of the box body is a foam plate. The biological filler area 3 is filled with biological fillers, the biological fillers are light suspended fillers, and the filling rate is designed to be 80%. The water inlet 11 is arranged below the water surface, and river water flows through the water inlet 11, the biological filler area 3 and the sedimentation area 4 and then is discharged through the water outlet 12 by the drainage pump 5.
The aeration outlet 31 discharges air according to the air output requirement; in the calculation of the air output requirement, the theoretical oxygen demand is calculated firstly, and then the air output of the aeration outlet is calculated by taking the theoretical oxygen demand as a parameter;
wherein the theoretical oxygen demand is calculated by the following formula:
N=V[0.7+1.7(CoCOD-CeCOD)+4.57(CoNH3-N-CeNH3-N)+1.2(CeDO-CoDO)]
wherein,
n is the theoretical oxygen demand of aeration;
v is the effective water quantity of river water in the biological filler area;
CoCOD is the chemical oxygen demand entering the river water;
CeCOD is the chemical oxygen demand of the discharged river water;
CoNH3n is the ammonia nitrogen concentration of the entering river water;
CeNH3n is the ammonia nitrogen concentration of the discharged river water;
CeDO is the dissolved oxygen concentration of the entering river water;
CoDO is the dissolved oxygen concentration of the discharged river water;
the calculation formula of the gas output of the aeration outlet 31 is as follows:
G=N*Cs*0.3*Ea/[α*(β*Cs-C0)*1.024(T-20)]
wherein,
g is the total amount of the outlet air of the aeration outlet 31;
cs is standard clear water saturated dissolved oxygen, and 9.17mg/L is taken;
ea is the oxygen utilization rate, and is 30 percent;
alpha is river water oxygen transfer coefficient/clear water oxygen transfer coefficient, and is taken as 0.8;
beta is the saturated dissolved oxygen value of river water/the saturated dissolved oxygen value of clear water, and is taken as 0.9;
C0taking 2mg/L of residual dissolved oxygen of the river water;
t is the river water temperature.
The acquisition mode of each parameter in the calculation is as follows: v is a value set during system design; CoCOD, CeCOD, CoNH3-N、CeNH3N, CeDO, CoDO and T are obtained after real-time measurement; cs, alpha, beta, C0Setting by combining design values, the values can be generally set as the recommended design values of a design manual for water supply and drainage (town drainage in volume 5); ea is the oxygen utilization rate, and 30 percent is taken as the oxygen utilization rate of the bottom aeration.
The biological filler in the biological filler area 3 is matched with aeration to realize aeration biological treatment on the polluted water; the settling zone 4 is used to achieve mud-water separation and to direct clean water to the drain pump 5. And the box body 1 is matched with the floating support body 2, so that the system can realize free movement in the water body.
A space is further arranged between the partition plate 6 and the settling zone 4, and a rectification wall 7 with an opening at the bottom is further erected on one side of the settling zone 4 facing the space; and a plurality of inclined plates or inclined tube bodies which are parallel to each other are suspended in the settling zone 4. Inclined plates or inclined tube bodies in the settling zone 4, so that the settling zone 4 forms a configuration similar to an inclined plate settling tank. The water flow passes through the top of the partition plate 6 to enter the space, then flows into the settling zone 4 from the bottom opening of the rectification wall 7, and then passes upwards through the inclined plate or the inclined pipe body to become clean water for the drainage pump 5 to be led out of the box body 1. Through the structure similar to an inclined plate sedimentation tank, a guide plate can be arranged below the sedimentation unit, so that water flows in and out, and the sedimentation effect is ensured. The precipitated sludge is stored at the bottom of the precipitation zone 4, so that the precipitated sludge is convenient to clean regularly.
The air source of the aeration outlet 31 is an aeration fan 32, and the aeration fan 32 is fixed on the upper water part of the top of the box body 1. The aeration fan 32 sucks and guides air on the water surface to the aeration outlet 31, and the aeration fan 32 is communicated with the aeration outlet 31 through a pipeline.
And the water inlet 11 and the water outlet 12 are respectively provided with a measuring probe 8 for measuring the chemical oxygen demand, the ammonia nitrogen concentration and the dissolved oxygen concentration of river water. The filler of the biological filler area 3 is provided with a thermometer 33 for measuring the temperature of river water therein.
The top water part of the box body 1 is also fixed with a solar cell panel 9 for providing electric energy. The solar panel 9 provides power output for all power utilization parts of the system and is matched with a storage battery and a municipal power grid. The bottom of the box body 1 is provided with a propeller 13 for providing moving force in water.
The drain pump 5 is disposed in a drain tank 41, and the drain tank 41 leads clean water out of the top of the settling zone 4. The discharge of the drain pump 5 leads to the water outlet 12. The drain tank 41 is provided in the cleaning water at the top of the settling zone 4. The drain pump 5 is a submersible drain pump.
The system is applied to urban inland riverways, parks and lakes or landscape water bodies, and the arrangement quantity is designed according to the water body pollution degree and the water area. The system processing scale is about 10m3And about/h. The system has the characteristics of small mud production amount, small hydraulic load, low aeration rate and the like, so that the model selection size of system equipment is relatively small, and the self weight is light.
When the system is operated, the purification system floats in a target water body, and river water is automatically filled into a biological filler area of the purification system through a water inlet arranged at the front end of the system, so that a seriously polluted area can be purified in a targeted manner; meanwhile, the gas output of the aeration outlet 31 is adjusted in real time through the measuring probe 8 for measuring the chemical oxygen demand, the ammonia nitrogen concentration and the dissolved oxygen concentration of the river water and the thermometer 33 for measuring the river water temperature, so that the long-acting and reliable purification effect of the whole water body is maintained.
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the embodiments disclosed, but is capable of numerous equivalents and substitutions, all of which are within the scope of the invention as defined by the appended claims.
Claims (10)
1. A cruising river water purification system on water surface comprises a box body, wherein the front part and the rear part of the box body are respectively provided with a water inlet and a water outlet, and the cruising river water purification system is characterized in that the box body is externally connected with a floating water supporting body, and a biological filler area, a sedimentation area and a drainage pump are sequentially arranged in the box body from the water inlet to the water outlet; the biological filler area and the sedimentation area are separated by a partition plate, a gap for water to cross into the sedimentation area is reserved between the top of the partition plate and the top of the box body, and the top of the partition plate is higher than the top surface of the filler of the biological filler area; aeration outlets which are guided to the fillers are uniformly paved at the bottom of the biological filler area;
the aeration outlet discharges air according to the air discharge requirement; in the calculation of the air output requirement, the theoretical oxygen demand is calculated firstly, and then the air output of the aeration outlet is calculated by taking the theoretical oxygen demand as a parameter;
wherein the theoretical oxygen demand is calculated by the following formula:
N=V[0.7+1.7(CoCOD-CeCOD)+4.57(CoNH3-N-CeNH3-N)+1.2(CeDO-CoDO)]
wherein,
n is the theoretical oxygen demand of aeration;
v is the effective water quantity of river water in the biological filler area;
CoCOD is the chemical oxygen demand entering the river water;
CeCOD is the chemical oxygen demand of the discharged river water;
CoNH3n is the ammonia nitrogen concentration of the entering river water;
CeNH3n is the ammonia nitrogen concentration of the discharged river water;
CeDO is the dissolved oxygen concentration of the entering river water;
CoDO is the dissolved oxygen concentration of the discharged river water;
the calculation formula of the air output of the aeration outlet is as follows:
G=N*Cs*0.3*Ea/[α*(β*Cs-C0)*1.024(T-20)]
wherein,
g is the total amount of the air outlet of the aeration outlet;
cs is standard clear water saturated dissolved oxygen, and 9.17mg/L is taken;
ea is the oxygen utilization rate, and is 30 percent;
alpha is river water oxygen transfer coefficient/clear water oxygen transfer coefficient, and is taken as 0.8-0.85;
beta is the saturated dissolved oxygen value of river water/the saturated dissolved oxygen value of clear water, and is taken to be 0.9-0.97;
C0dissolving for the rest of river waterTaking oxygen, taking 2 mg/L;
t is the river water temperature.
2. The cruising river water purification system of claim 1, wherein a space is provided between the partition plate and the settling zone, and a bottom-opened rectifying wall is erected on a side of the settling zone facing the space; and a plurality of inclined plates or inclined tube bodies which are parallel to each other are arranged in the sedimentation zone in a suspending way.
3. The cruising type river water purification system of claim 1, wherein the air source of the aeration outlet is an aeration fan fixed to the upper water portion of the top of said tank.
4. The cruising type river water purification system of claim 1, wherein measuring probes for measuring chemical oxygen demand, ammonia nitrogen concentration and dissolved oxygen concentration of the passing river water are provided in the water inlet and the water outlet.
5. The cruising river water purification system of claim 1, wherein the top water portion of the tank further comprises a solar panel fixed thereto for providing electrical power.
6. The cruising river water purification system of claim 1, wherein the bottom of the tank is provided with a propeller for providing a moving force in the water.
7. The cruising river water purification system of claim 1, wherein the drain pump is disposed in a drain tank that draws clean water from the top of the settling zone.
8. The cruising river water purification system of claim 1, wherein the drain pump is a submersible drain pump.
9. The cruising river water purification system of claim 1, wherein the tank is of lightweight plastic material.
10. The cruising type river water purification system of claim 1, wherein a thermometer for measuring the temperature of the river water therein is disposed in the filler of the bio-filler zone.
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