CN113060811B - Chemistry experiment room sewage flocculation treatment device - Google Patents

Abstract

The invention discloses a flocculation treatment device for chemical laboratory sewage, comprising a flocculation reactor, a sewage inlet pipe, a sewage distributor, a flocculant storage, a powder nozzle and a flocculant distributor; the outlet end of the sewage inlet pipe is connected to the sewage distributor. The water end is fluidly connected, the sewage distributor is installed on the cover of the flocculation reactor, and the outlet end of the sewage distributor is in fluid communication with the interior of the flocculation reactor; the flocculant reservoir is fluidly connected to the powder nozzle, and the powder nozzle nozzle It is arranged in the flocculation reactor and the powder nozzle is installed on the side wall of the flocculation reactor adjacent to the cover; the flocculant distributor is arranged in the flocculation reactor under the nozzle of the powder nozzle and is located above the liquid level in the flocculation reactor . The invention solves the problem of not affecting the continuous growth of flocs while ensuring the dispersibility of the flocculant in the sewage, and reduces or eliminates the influence of stirring on the continuous growth of flocs.

Description

A chemical laboratory sewage flocculation treatment device

technical field

The invention relates to the technical field of sewage treatment. Specifically, it is a chemical laboratory sewage flocculation treatment device.

Background technique

In the process of sewage treatment, it is often necessary to add flocculants for flocculation and sedimentation, and in order to test the flocculation and sedimentation effect of flocculants, it usually needs to be verified in the laboratory. However, when carrying out flocculation and sedimentation experiments on sewage in the laboratory, it is easy to cause uneven dispersion of flocculants and fracture of flocs due to poor control of the timing of stirring and speed reduction. Therefore, how to improve the dispersion of flocculants in sewage without affecting the growth of flocs has become a problem that laboratory personnel need to consider. However, under the pressure of scientific research, laboratory personnel often do not have time to solve this problem from the equipment, and basically rely on experience to control the stirring speed and the intensity of the stirring.

Contents of the invention

For this reason, the technical problem to be solved by the present invention is to provide a chemical laboratory sewage flocculation treatment device, which solves the problem of ensuring the dispersion of the flocculant in sewage without affecting the continuous growth of flocs, reducing or eliminating the need for stirring The effect on the continuous growth of flocs.

In order to solve the above technical problems, the present invention provides the following technical solutions:

A chemical laboratory sewage flocculation treatment device, including a flocculation reactor, a sewage inlet pipe, a sewage distributor, a flocculant storage, a powder nozzle and a flocculant distributor; the outlet end of the sewage inlet pipe and the sewage distributor The water inlet end is fluidly connected, the sewage distributor is installed on the cover of the flocculation reactor, and the water outlet of the sewage distributor is in fluid communication with the interior of the flocculation reactor; the flocculant storage is connected to the powder The body nozzle is fluidly connected, the nozzle of the powder nozzle is arranged in the flocculation reactor and the powder nozzle is installed on the side wall of the flocculation reactor adjacent to the cover; the flocculant distributor It is arranged in the flocculation reactor located below the nozzle of the powder nozzle and above the liquid level in the flocculation reactor; when performing the flocculation and sedimentation experiment, the powder nozzle stores the flocculant storage The released flocculant is sprayed into the flocculation reactor, a part of the flocculant falls on the flocculant distributor, and then the flocculant on the flocculant distributor is washed by the sewage flowing out from the sewage distributor. In the sewage below the flocculant distributor.

In the above chemical laboratory sewage flocculation treatment device, the included angle between the spraying direction of the powder nozzle and the side wall of the flocculation reactor is 30° to 70°.

In the above chemical laboratory sewage flocculation treatment device, the flocculant distributor includes an annular member and a rod-shaped connector, and the annular members having three or more different inner diameters are coaxially assembled into a disc-shaped member through the rod-shaped connector and connected to each other. A gap for flocculant or sewage to pass is provided between two adjacent annular members.

In the above chemical laboratory sewage flocculation treatment device, the flocculant distributor includes a ring member and a rod, the rods of different lengths are installed in parallel on the inner side of the ring member, and there is a gap between two adjacent rods. There are gaps for flocculant or sewage to pass through.

In the above chemical laboratory sewage flocculation treatment device, the flocculant distributor is made of a base material with protrusions on the surface, and the distance between two adjacent protrusions is 2-7 mm; the flocculant distribution The container is placed on the support block provided on the inner wall of the flocculation reactor.

In the above chemical laboratory sewage flocculation treatment device, the flocculant distributor is made of a base material with grooves on the surface, and the distance between two adjacent grooves is 2-7mm.

In the chemical laboratory sewage flocculation treatment device, the diversion holes on the distribution plate of the sewage distributor are stepped holes.

In the above chemical laboratory sewage flocculation treatment device, the stepped holes include first-level holes, second-level holes and third-level holes, and the first-level holes, the second-level holes and the third-level holes are all tapered holes.

In the chemical laboratory sewage flocculation treatment device above, the flaring end of the first-stage hole is coaxially connected to the flaring end of the second-stage hole, and the shrinking end of the second-stage hole is coaxially connected to the shrinking end of the third-stage hole .

In the chemical laboratory wastewater flocculation treatment device, there are connected diversion grooves on the walls of the primary holes, the secondary holes and the tertiary holes.

The technical solution of the present invention has achieved the following beneficial technical effects:

1. The joint use of sewage distributor and flocculant distributor can not only improve the dispersion of flocculant in sewage, but also cancel the stirring of sewage, thus eliminating the influence of stirring on the continuous growth of floc.

2. The dispersion of the flocculant in the sewage can be effectively improved by spraying the flocculant and the water inflow at intervals, and the effect similar to vigorous stirring can be achieved.

3. When the sewage flows into the flocculation reactor through the stepped holes with diversion grooves, the distribution of the sewage flowing out of the stepped holes can be more dispersed than that of the conventional flow holes.

Description of drawings

Fig. 1 is the structural representation of chemical laboratory sewage flocculation treatment device of the present invention;

Fig. 2 is the structural representation of the flocculant distributor of the chemical laboratory sewage flocculation treatment device of the present invention;

Fig. 3 is the structural representation of the base material of the flocculant distributor of the chemical laboratory sewage flocculation treatment device of the present invention;

Fig. 4 is another schematic structural view of the base material for the flocculant distributor of the chemical laboratory sewage flocculation treatment device of the present invention;

Fig. 5 is a schematic structural view of the sewage distributor distribution plate of the chemical laboratory sewage flocculation treatment device of the present invention;

Fig. 6 is another schematic structural view of the flocculant distributor of the chemical laboratory sewage flocculation treatment device of the present invention.

In the figure, 1- water inlet pipe; 2- sewage distributor; 3- flocculant storage; 4- powder nozzle; 5- flocculation reactor; 6- flocculant distributor; 7- support block; 8- flocculation reaction zone ;9-cover; 10-ring member; 11-rod connector; 12-substrate; 13-protrusion; 14-groove; 15-rod; 16-distribution plate; - secondary hole; 19 - tertiary hole; 20 - diversion groove.

Detailed ways

Example 1

As shown in Figure 1, the chemical laboratory sewage flocculation treatment device of the present invention includes a flocculation reactor 5, a sewage inlet pipe 1, a sewage distributor 2, a flocculant storage device 3, a powder nozzle 4 and a flocculant distributor 6; The water outlet end of the sewage water inlet pipe 1 is fluidly connected to the water inlet end of the sewage distributor 2, the sewage distributor 2 is installed on the cover 9 of the flocculation reactor 5, and the water outlet end of the sewage distributor 2 is connected to the water inlet end of the sewage distributor 2. The internal fluid of the flocculation reactor 5 is connected; the flocculant reservoir 3 is fluidly connected to the powder nozzle 4, and the nozzle of the powder nozzle 4 is arranged in the flocculation reactor 5 and the powder nozzle 4 is installed on the side wall of the flocculation reactor 5 adjacent to the cover 9; the flocculant distributor 6 is arranged in the flocculation reactor 5 below the nozzle of the powder nozzle 4 and located in the Above the liquid level in the flocculation reactor 5; during the flocculation and sedimentation experiment, the powder nozzle 4 sprays the flocculant stored in the flocculant storage 3 into the flocculation reactor 5, and a part of the flocculant falls On the flocculant distributor 6 , the flocculant on the flocculant distributor 6 is washed into the sewage below the flocculant distributor 6 by the sewage flowing out from the sewage distributor 2 .

Wherein, the included angle between the spraying direction of the powder nozzle 4 and the side wall of the flocculation reactor 5 is 40°, and the diversion holes on the distribution plate 16 of the sewage distributor 2 are straight through holes.

The flocculant distributor 6 includes an annular member 10 and a rod-shaped connector 11. As shown in FIG. There is a gap between the two ring members 10 for the passage of flocculant or sewage, and the flocculant distributor 6 is placed on the support block 7 arranged on the inner wall of the flocculation reactor 5 . In this embodiment, the flocculant distributor 6 is made of a substrate 12 with protrusions 13 on its surface, as shown in FIG. 3 , the distance between two adjacent protrusions 13 is 4mm.

The powder nozzle 4 sprays the flocculant stored in the flocculant storage 3 into the flocculation reactor 5, a part of the flocculant falls into the sewage in the flocculant reactor, and a part falls into the On the flocculant distributor 6, the gap between the two protrusions 13 is convenient for temporarily storing the flocculant, so as to prevent the sewage flowing out from the sewage distributor 2 from distributing the flocculant on the flocculant distributor 6 at one time. flushing into the sewage in the flocculation reactor 5, so that the dispersion degree of the flocculant in the sewage can be improved. When the flocculant is dispersed into the sewage, the flocculant can be uniformly dispersed in the sewage without stirring, especially when the flocculant and sewage are added into the flocculation reactor 5 in batches.

When the flocculant is dispersed into the sewage, the flocculant reacts with the pollutants in the sewage to produce flocs, and with the continuous addition of flocculants and sewage, the flocs will continue to grow. Since the stirring of the flocculant evenly dispersed into the sewage is omitted, the interruption of the floc growth can be avoided.

Example 2

The difference between the chemical laboratory sewage flocculation treatment device in this embodiment and the chemical laboratory sewage flocculation treatment device in Example 1 is that the flocculant distributor 6 includes an annular member 10 and a rod 15, as shown in FIG. 6 The rods 15 of different lengths are installed in parallel on the inner side of the ring member 10 and there is a gap between two adjacent rods 15 for the passage of flocculant or sewage. The flocculant distributor 6 is made of a substrate 12 with grooves 14 on its surface, as shown in FIG. 4 , the distance between two adjacent grooves 14 is 6 mm.

Compared with the gap between the two protrusions 13 in Example 1, the groove 14 has a stronger ability to hold the flocculant, which can improve the dispersion of the flocculant in the sewage, especially the flocculation effect is better. strong flocculant, and at the same time, it can also prevent the sewage distributor 2 from flowing out of relatively concentrated sewage water to wash down the flocculant on the flocculant distributor 6 at one time.

Example 3

The difference between the chemical laboratory sewage flocculation treatment device in this embodiment and the chemical laboratory sewage flocculation treatment device in Example 1 is that the diversion holes on the distribution plate 16 of the sewage distributor 2 are stepped holes, as shown in Figure 5 As shown, the stepped hole includes a first-level hole 17, a second-level hole 18 and a third-level hole 19, and the first-level hole 17, the second-level hole 18 and the third-level hole 19 are all tapered holes; The flaring end of the primary hole 17 is coaxially connected with the flaring end of the secondary hole 18, the constricting end of the secondary hole 18 is coaxially connected with the constricting end of the tertiary hole 19, and the primary On the hole walls of the holes 17 , on the hole walls of the secondary holes 18 and on the hole walls of the tertiary holes 19 , there are provided communicating diversion grooves 20 .

The dispersing effect of using the flocculant distributor 6 instead of the agitator to disperse the flocculant into the sewage depends not only on the ability of the flocculant distributor 6 to hold the flocculant, but also on the ability of the sewage distributor 2 to To what extent is the sewage dispersed. The diversion holes on the distribution plate 16 of the sewage distributor 2 in this embodiment adopt stepped holes, especially the structure shown in Figure 5, which can make the sewage flowing out from the diversion holes more dispersed, The reason is: the first-level hole 17 disperses the water flow, the diversion groove 20 on the hole wall of the first-level hole 17 improves the degree of dispersion of part of the water flow, and the second-level hole 18 shrinks the water flow, and the second-level hole 18 shrinks the water flow. The diversion groove 20 on the wall of the first-level hole 18 shrinks part of the water flow to a lower degree, and the third-level hole 19 disperses the water flow again, and the diversion groove 20 on the wall of the third-level hole 19 then Part of the water flow is dispersed to a higher degree, especially when the cross-section of the diversion groove 20 is conical and the conical flaring faces the central axis of the diversion hole.

The pollutants in the sewage are uniformly dispersed by using the stepped holes, and at the same time, the sewage water flow can be dispersed evenly when flowing out of the diversion holes, so that the sewage can evenly disperse the pollutants on the flocculant distributor 6 The flocculant is infiltrated and washed into the sewage below the flocculant distributor 6, so as to realize the uniform dispersion of the flocculant in the sewage, and at the same time, it can avoid interruption of the continuous growth of the floc by mechanical agitation.

When using the chemical laboratory sewage flocculation treatment device in Examples 1 to 3 to flocculate sewage, a certain amount of sewage can be injected into the flocculation reaction zone 8 of the flocculation reactor 5, and then the flocculation reactor 5, the flocculant is sprayed into the flocculation reactor 5, and part of the flocculant sprayed into the flocculation reactor 5 falls into the sewage in the flocculation reaction zone 8, and the other part is attached to the flocculant distributor 6, and then to the A certain amount of sewage is injected into the flocculation reactor 5, and this part of sewage will flush the flocculant on the flocculant distributor 6 into the sewage in the flocculation reaction zone 8, and form dynamic mixing with the sewage, while It is not only mixed by diffusion, but also plays a role similar to stirring, and the greater the impact force of the flocculant on the flocculant distributor 6 by the sewage, the better the mixing effect, and the distribution plate of the sewage distributor 2 The diversion hole structure on 16 will also have a certain impact on the impact effect of the sewage on the flocculant on the flocculation distributor. The diversion hole structure in embodiment 3 can ensure the downward impact force of the sewage while improving the impact of the sewage. The dispersion effect can make the sewage cover the whole flocculant distributor 6 after flowing out from the diversion hole, so as to reduce the residue of flocculant on the flocculant distributor 6 after flushing. After flushing the flocculant distributor 6 with sewage for a period of time, the injection of sewage into the flocculation reactor 5 is suspended, and then the flocculant is sprayed into the flocculation reactor 5, and then injected into the flocculation reactor 5. Inject sewage, and repeat this process to realize the mixing of flocculant and sewage and the flocculation treatment of chemical laboratory sewage.

In the process of flocculating sewage by using the chemical laboratory sewage flocculation treatment device in Examples 1 to 3, the flocculant is mixed with the sewage by rinsing, which can not only realize the full mixing of the flocculant and sewage, but also reduce the It even eliminates the influence of stirring on the continuous growth of flocs, avoids the fracture caused by external force disturbance during the growth of flocs, and can obtain flocs with relatively complete shapes in a short period of time.

Apparently, the above-mentioned embodiments are only examples for clear description, rather than limiting the implementation. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. However, the obvious changes or changes derived therefrom are still within the protection scope of the claims of this patent application.

Claims (4)

1. A chemical laboratory sewage flocculation treatment device is characterized in that it comprises a flocculation reactor (5), a sewage inlet pipe (1), a sewage distributor (2), a flocculant reservoir (3), a powder nozzle ( 4) and a flocculant distributor (6); the outlet end of the sewage inlet pipe (1) is fluidly connected to the inlet end of the sewage distributor (2), and the sewage distributor (2) is installed on the The flocculation reactor (5) is on the cover (9) and the water outlet of the sewage distributor (2) is in fluid communication with the interior of the flocculation reactor (5); the flocculant storage (3) is connected to the powder nozzle (4) Fluid connection, the nozzle of the powder nozzle (4) is set in the flocculation reactor (5) and the powder nozzle (4) is installed on the On the side wall of the flocculation reactor (5); the flocculant distributor (6) is arranged in the flocculation reactor (5) below the nozzle of the powder nozzle (4) and is located in the flocculation reactor ( 5) Above the inner liquid surface; when performing flocculation and sedimentation experiments, the powder nozzle (4) sprays the flocculant stored in the flocculant storage (3) into the flocculation reactor (5), A part of the flocculant falls on the flocculant distributor (6), and then the flocculant on the flocculant distributor (6) is washed into the flocculant by the sewage flowing out from the sewage distributor (2) In the sewage below the distributor (6); the diversion holes on the distribution plate (16) of the sewage distributor (2) are stepped holes, and the stepped holes include a primary hole (17), a secondary hole (18) And tertiary hole (19), described primary hole (17), described secondary hole (18) and described tertiary hole (19) are tapered holes, and described primary hole (17) flares end is coaxially connected with the flaring end of the secondary hole (18), and the shrinking end of the secondary hole (18) is coaxially connected with the shrinking end of the tertiary hole (19); the primary hole ( 17), the hole wall of the secondary hole (18) and the hole wall of the tertiary hole (19) are provided with connected diversion grooves (20), and the flocculant distributor ( 6) It is made of a substrate (12) with protrusions (13) on its surface or the flocculant distributor (6) is made of a substrate (12) with grooves (14) on its surface, adjacent The distance between two protrusions (13) is 2-7mm; the distance between two adjacent grooves (14) is 2-7mm, and the flocculant distributor (6) is placed on It is arranged on the support block (7) on the inner wall of the flocculation reactor (5). 2. The chemical laboratory sewage flocculation treatment device according to claim 1, characterized in that, the angle between the spray direction of the powder nozzle (4) and the side wall of the flocculation reactor (5) is 30° ~70°. 3. The chemical laboratory sewage flocculation treatment device according to claim 1, characterized in that, the flocculant distributor (6) includes an annular member (10) and a rod-shaped connector (11), which is greater than or equal to 3 The annular members (10) with different inner diameters are coaxially assembled into disc-shaped members through rod-shaped connectors (11), and there is a gap between two adjacent annular members (10) for the passage of flocculant or sewage . 4. The chemical laboratory sewage flocculation treatment device according to claim 1, characterized in that, the flocculant distributor (6) comprises an annular member (10) and a rod (15), and the annular member (10) The rods (15) of different lengths are installed in parallel on the inner side, and a gap for flocculant or sewage to pass is provided between two adjacent rods (15).

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