CN215263244U

CN215263244U - Experimental device for determining influence of hydrophobic groups in black and odorous water on oxygen mass transfer coefficient

Info

Publication number: CN215263244U
Application number: CN202120503395.2U
Authority: CN
Inventors: 谌书; 封小倩; 杨远坤; 王彬; 李函珂
Original assignee: Southwest University of Science and Technology
Current assignee: Southwest University of Science and Technology
Priority date: 2021-03-10
Filing date: 2021-03-10
Publication date: 2021-12-21
Anticipated expiration: 2031-03-10

Abstract

The utility model discloses an experimental device for hydrophobic group influences oxygen mass transfer coefficient in survey black and odorous water, including nitrogen gas jar, reactor, iron stand platform and on-line monitoring dissolved oxygen device. This device simple structure, convenient operation, and can avoid destroying the organic membrane that forms on the aqueous vapor interface, the change of oxygen transmission after organic membrane produces in the real-time, accurate, the quick survey black and odorous water body provides the significance for the study black and odorous water body formation mechanism of scholars.

Description

Experimental device for determining influence of hydrophobic groups in black and odorous water on oxygen mass transfer coefficient

Technical Field

The utility model belongs to the technical field of monitoring devices, specifically be an experimental apparatus for hydrophobic group influences oxygen mass transfer coefficient in survey black and odorous water.

Background

With the rapid development of economy, a large amount of domestic sewage and industrial wastewater are directly discharged into rivers and lakes without treatment, so that the problem of water pollution in China is continuously aggravated. In urban rivers and lakes, a large amount of organic pollutants are discharged into a decomposition and consumption water body to dissolve oxygen, the oxygen consumption rate in water is greater than the reoxygenation rate, so that the water body is in an anoxic or anaerobic state, the number of anaerobic microorganisms is increased sharply, and a large amount of odorous gases (such as H2S, NH3, CH4 and the like) are released, thereby causing the water body to blacken and foul. Undecomposed organic matters in a river or a closed lake with slow flow speed are enriched on the water surface to form an organic film, which influences the transfer of oxygen at a water interface and further causes black and odorous water. The generation of black and odorous water seriously affects the urban landscape and the physical health of residents.

In recent years, scholars at home and abroad are conducting a great deal of research on the formation reason, mechanism, treatment technology and evaluation aspect of the black and odorous water body. Most laboratory researches black and odorous water body produces the mechanism in-process, measures dissolved oxygen and all puts into the aquatic through following the probe on the water, and the utility model provides a device that hydrophobic group influences oxygen transmission coefficient in the survey black and odorous water body, the organic membrane that forms on the surface of water and the change that organic membrane produced back oxygen transmission in accurate, quick, the real-time determination black and odorous water body does not destroy, has the significance for the scholars research black and odorous water body formation mechanism.

Disclosure of Invention

1. Solves the technical problem

The utility model discloses an experimental device for hydrophobic group influences oxygen mass transfer coefficient in survey black and odorous water, the device simple structure, convenient operation can be accurate under the condition of not destroying organic membrane, quick, the change of dissolved oxygen in the real-time supervision black and odorous water.

2. Technical scheme

In order to achieve the above object, the utility model provides a following scheme: the utility model provides an experimental apparatus for hydrophobic group influences oxygen mass transfer coefficient in survey black and odorous water, includes nitrogen gas jar, reactor, iron stand platform and on-line monitoring dissolved oxygen device, the nitrogen gas jar passes through hose connection reactor.

Further, the reactor comprises bottom plate and cylinder, and bottom plate and cylinder belong to the organic glass material, the top fixed connection cylinder of bottom plate.

Furthermore, 5 round small holes are sequentially formed in the column body from top to bottom, and a water stop valve with threads is installed.

Furthermore, the dissolved oxygen on-line monitoring device comprises a screw cap, a dissolved oxygen probe, a PLC control box and a computer, wherein one end of the dissolved oxygen probe with a line is fixed on the screw cap and is screwed on the water stop valve.

Furthermore, one end of the dissolved oxygen probe with the wire is fixedly connected to a PLC control box, and the PLC control box is connected with a computer.

Furthermore, an iron stand is placed on one side of the reactor, and a nylon rope is connected to the iron stand with the iron ring.

Furthermore, the other end of the nylon rope is connected with a dialysis clamp, and the dialysis clamp clamps the dialysis bag.

Further, the dialysis bag contains an ascorbic acid solution of known concentration.

3. Advantageous effects

The utility model provides an experimental device for hydrophobic group influences oxygen mass transfer coefficient in survey black and odorous water possesses following beneficial effect, and this device is through its structural design, installs the stagnant water valve of taking the screw thread on the cylinder, opens the stagnant water valve, and then is fixing dissolved oxygen probe band wire one end and screwing on stagnant water valve with the nut. And if the electrode needs to be cleaned and calibrated, taking out the dissolved oxygen probe, and closing the water stop valve. Dissolved oxygen probe beltline one end fixed connection is on the PLC control box, and the PLC control box is connected the computer, can real-time supervision dissolved oxygen's change. Through at the cylinder outside installation detachable dissolved oxygen probe, avoid destroying the organic membrane at aqueous vapor interface, be convenient for accurate survey black smelly water in the organic membrane produce the change of back oxygen transmission.

Drawings

Figure 1 the structure of the present invention is schematically illustrated

In the figure: 1, a nitrogen tank; 2, a bottom plate; 3, a column body; 4, a water stop valve; 5, a screw cap; 6 dissolved oxygen probe; 7, a PLC control box; 8, a computer; 9, an iron stand table; 10 nylon ropes; 11 dialysis bag.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "top", "inner", "outer", "one end", "the other end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, the utility model provides a technical solution: the utility model provides an experimental apparatus for hydrophobic group is to oxygen mass transfer coefficient in survey black and odorous water, includes nitrogen gas jar 1, reactor, iron stand platform 9 and on-line monitoring dissolved oxygen device, nitrogen gas jar 1 passes through the hose connection reactor. The reactor comprises bottom plate 2 and cylinder 3, and bottom plate 2 and cylinder 3 belong to the organic glass material, the top fixed connection cylinder 3 of bottom plate 2. 5 round small holes are sequentially formed in the upper part, the middle part and the lower part of the column body, and a water stop valve 4 with threads is installed. The online monitoring dissolved oxygen device comprises a screw cap 5, a dissolved oxygen probe 6, a PLC control box 7 and a computer 8, wherein the screw cap 5 is used for fixing one end of the dissolved oxygen probe 6 with a wire and screwing the end on the water stop valve 4. One end of the dissolved oxygen probe 6 with a wire is fixedly connected to a PLC control box 7, and the PLC control box 7 is connected with a computer 8. An iron support 9 is placed on one side of the reactor, a nylon rope 10 is tied on the iron support 9 with an iron ring, the other end of the nylon rope 10 is connected with a dialysis clamp, the dialysis clamp clamps a dialysis bag 11, and ascorbic acid solution with known concentration is filled in the dialysis bag 11.

In this embodiment: firstly, the reactor is filled with overlying water in a siphoning mode, nitrogen is introduced to remove dissolved oxygen in the water body, the dialysis bag filled with ascorbic acid is slowly placed into the reactor, ester substances are dropped into the reactor to form oil films with different thicknesses on the water surface, and the transfer amount of the dissolved oxygen in the water body is monitored in real time by an online dissolved oxygen monitoring device.

It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an experimental apparatus for hydrophobic group influences oxygen mass transfer coefficient in survey black and odorous water, its characterized in that includes nitrogen gas jar (1), reactor, iron stand platform (9) and on-line monitoring dissolved oxygen device, nitrogen gas jar (1) is through hose connection reactor.

2. The experimental device for determining the influence of hydrophobic groups on the oxygen mass transfer coefficient in the black and odorous water body according to claim 1, wherein the reactor is composed of a bottom plate (2) and a column body (3), the bottom plate (2) and the column body (3) are made of organic glass materials, and the column body (3) is fixedly connected to the top of the bottom plate.

3. The experimental device for determining the influence of hydrophobic groups on the oxygen mass transfer coefficient of the black and odorous water body according to claim 2, wherein 5 circular small holes are sequentially formed in the upper part, the middle part and the lower part of the cylinder (3), and the water stop valve (4) with threads is installed.

4. The experimental device for determining the influence of hydrophobic groups on the oxygen mass transfer coefficient of black and odorous water according to claim 1, wherein the online dissolved oxygen monitoring device comprises a screw cap (5), a dissolved oxygen probe (6), a PLC control box (7) and a computer (8), and the screw cap (5) is fixed at one end of the dissolved oxygen probe (6) with a wire and screwed on the water stop valve (4).

5. The experimental device for determining the influence of hydrophobic groups on the oxygen mass transfer coefficient of the black and odorous water body according to claim 4, wherein the wired end of the dissolved oxygen probe (6) is connected with a PLC control box (7), and the PLC control box (7) is connected with a computer (8).

6. The experimental device for determining the influence of hydrophobic groups on the oxygen mass transfer coefficient in the black and odorous water body according to claim 1, wherein an iron stand (9) is arranged on one side of the reactor, and nylon ropes (10) are tied on the iron stand (9) with the iron rings.

7. The experimental device for determining the influence of hydrophobic groups on the oxygen mass transfer coefficient in black and odorous water according to claim 6, wherein the other end of the nylon rope (10) is connected with a dialysis clamp, and the dialysis clamp clamps the dialysis bag (11).

8. The experimental facility for determining the influence of hydrophobic groups on oxygen mass transfer coefficient of black and odorous water according to claim 7, wherein the dialysis bag (11) is filled with ascorbic acid solution with known concentration.