Device for detecting dehydration performance of sludge flocculant

Abstract

A sludge flocculant dehydration performance detection device comprises a box body, a gland, a force application piece, a filter bag, a collection measuring cup and an electronic scale, the box body is provided with a containing groove and a water filtering hole penetrating into the containing groove from the side face and the bottom face of the box body, sludge is filled into the filter bag after being provided with a flocculant, the filter bag is arranged in the containing groove, the filter bag is clamped by the gland and the containing groove, and the force application piece is arranged in the containing groove. The force application piece drives the gland to apply pressure to the filter bag to filter the filtrate, and the collecting measuring cup is provided with a water filtering hole for receiving the filtrate seeping out of the water filtering hole. The method comprises the following steps: quickly obtaining different filtrate masses of sludge under the conditions of using different types and quantities of flocculants through a detection device under the conditions of equal amount of sludge, same application force and same time, further converting the mass percent of the sludge, and comparing the types and quantities of the flocculants with the dewatering performance numerical value of the sludge of the current sewage plant. Therefore, a sewage plant is assisted to quickly formulate a dosing scheme, and the sludge dosing cost is remarkably reduced.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, in particular to a sludge flocculant dehydration performance detection device. Background Art

[0002] Sludge is a by-product produced during the solid-liquid separation or retention process in the sewage treatment process. In the existing technology for sludge dewatering, the sludge is first chemically conditioned to improve the dewatering performance, and the sludge is conditioned with flocculants (PAM), oxidants, etc., and then the water is removed by mechanical filtration. In the process of chemical conditioning of the sludge, the dosage of various reagents used needs to be controlled. Large-scale use will not only increase the environmental burden, but also increase the cost of sludge dewatering, and even worse, reduce the dewatering efficiency.

[0003] At present, there are two traditional methods for judging dehydration performance:

[0004] The first method is to judge by visual inspection of floc morphology, the second is to judge by measuring the specific resistance of sewage, and the third is to dry the sludge and make a mass conversion judgment. Although the first method is simple, it is somewhat subjective. Although the second and third methods are accurate, they are complicated and time-consuming. The shortcomings of the judgment method, coupled with the fact that the properties of sewage in sewage treatment plants often change, lead to low efficiency in the type and dosage of flocculants in sewage treatment plants according to real-time sewage changes, which affects the operating costs of the plant.

[0005] Therefore, the prior art lacks a device that can quickly detect the dehydration performance of flocculants, so that the type and dosage of flocculants can be adjusted conveniently and efficiently according to the real-time water inflow, thereby improving the efficiency of the sewage treatment plant and reducing costs. Summary of the invention

[0006] In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a sludge flocculant dehydration performance detection device.

[0007] The technical solution of the present invention is: a sludge flocculant dewatering performance detection device, including a box body, a pressure cover, a force-applying member, a filter bag, a collecting measuring cup and an electronic scale. The box body is provided with a receiving groove, and a water filter hole extending from the side and bottom of the box body to the receiving groove. The sludge is configured with a flocculant and then loaded into a filter bag, which is placed in the receiving groove. The pressure cover and the receiving groove clamp the filter bag, and the force-applying member drives the pressure cover to apply pressure to the filter bag to filter the filtrate. The collecting measuring cup is arranged on the electronic scale and receives the filtrate seeping out of the water filter hole.

[0008] By adopting the above technical scheme, several equal amounts of sludge from the sewage treatment plant are taken, and different types of flocculants and dosages are configured, such as several portions of polyacrylamide thickener (PAM) ranging from 3 / 1000 to 5 / 1000, and are put into different sludges and stirred for the same length of time. Then, they are loaded into filter bags respectively and placed in the storage grooves of the box bodies of each device. Then, the force-applying member applies the same pressure, and the pressure cover cooperates with the storage groove to clamp the filter bag, so that the moisture of the sludge in the filter bag is precipitated and flows into the collecting cup through the water filter hole. The volume of the filtrate displayed in the collecting cup is converted to the volume of the sampled sludge to obtain the specific value of the dehydration performance of the flocculant.

[0009] In another embodiment, an electronic scale can be set under the collection measuring cup. The electronic scale displays the weight of the filtrate, which is converted into the weight of the sampled sludge to obtain the specific value of the flocculant dehydration performance, so that the type and dosage of the flocculant can be quickly and conveniently compared and adjusted according to the real-time changes in sludge properties.

[0010] In the first embodiment of the utility model, the force-applying member can be set as a weight, and static pressure is applied to the glands of each group of detection devices through weights of equal weight, so as to compare and convert the filtrate pressed out in the same time.

[0011] The utility model is further configured as follows: a vertical screw is arranged on the bottom surface of the box body storage groove, and the gland is provided with a through hole and a nut adapted to the vertical screw; the nut is arranged on the end surface of the gland away from the filter bag, and is tightened by a torque wrench to apply pressure to the gland.

[0012] By adopting the above technical solution, in the second embodiment of the utility model, the nuts of each group of detection devices are tightened with the same torque by a torque wrench, and the nuts are lifted and lowered along the vertical screw to drive the gland to press the filter bag. The second embodiment is preferred in this application.

[0013] The utility model is further configured as follows: the device further comprises a collecting rack, the collecting rack is provided with a bucket-shaped groove and a collecting hole penetrating the lowest point of the bucket-shaped groove, the box body is arranged on the bucket-shaped groove, and the collecting measuring cup is arranged below the collecting hole.

[0014] By adopting the above technical solution, the filtrate seeping out of the filter bag in the box body seeps out from the collecting holes of the box body, and the filtrate is collected by the provided bucket-shaped groove and weighed in the collecting measuring cup.

[0015] The utility model is further configured as follows: the box body comprises a side frame and a bottom plate which are separately arranged, a plurality of raised platforms are arranged on the bottom plate, and a flow channel is formed between the bottom plates by the plurality of raised platforms, and the filter holes on the bottom plate are arranged in the flow channel.

[0016] By adopting the above technical solution, the bottom of the filter bag is supported by the provided raised platform, so that the flow channel passes through the bottom of the filter bag, thereby preventing the bottom surface of the filter bag from completely contacting the floor of the box body, resulting in the filtrate being unable to be discharged.

[0017] A further configuration of the utility model is that the box body and the collecting tray are made of PE material.

[0018] By adopting the above technical solution, the box body and the collecting plate are made of non-absorbent materials to avoid affecting the discharge of the filtrate. The present application preferably uses PE material, and other non-absorbent materials can also be used equally.

[0019] A further configuration of the utility model is that the electronic scale is connected to computer data.

[0020] By adopting the above technical solution, the filtrate mass value is obtained and transmitted to the computer for rapid conversion by the program.

[0021] The beneficial effects of the utility model are as follows: the utility model uses a detection device to quickly obtain different filtrate masses of sludge when using different types and amounts of flocculants under the conditions of equal amount of sludge, same force and same time, and then converts the sludge mass percentage to obtain a numerical comparison of the dewatering performance of the current sewage treatment plant sludge under the conditions of each type and amount of flocculants, thereby assisting the sewage treatment plant to quickly formulate a dosing plan and significantly reducing the cost of sludge dosing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The structure of the embodiment of the present invention Figure 1 ;

[0023] Figure 2 The structure of the embodiment of the present invention Figure 2 ;

[0024] Figure 3 The structure of the embodiment of the present invention Figure 3 ;

[0025] Figure 4 The structure of the embodiment of the present invention Figure 4 .

[0026] Among them, 1-box body, 11-storage groove, 12-vertical screw, 13-nut, 14-bottom plate, 15-raised platform, 16-flow channel, 2-pressure cover, 3-weight, 4-collection measuring cup, 5-electronic scale, 6-collection rack, 61-bucket-shaped groove, 62-collection hole.

[0027] In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. In addition, the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. DETAILED DESCRIPTION

[0028] In order to make the technical solution and advantages of the present application clearer, the technical solution of the present application will be further described in detail in detail and in detail in conjunction with the accompanying drawings. It can be understood that the specific embodiments described here are only partial embodiments of the present application, which are only used to explain the present application, not to limit the present application. It should be noted that, for the convenience of description, only the parts related to the present application are shown in the accompanying drawings, and other related parts can refer to the general design. In the absence of conflict, the embodiments in the present application and the technical features in the embodiments can be combined with each other to obtain new embodiments.

[0029] The present invention is described in detail below in conjunction with the accompanying drawings. Figure 1-4 As shown,

[0030] A sludge flocculant dewatering performance detection device comprises a box body 1, a pressure cover 2, a force applying member, a filter bag, a collecting measuring cup 4 and an electronic scale 5. The box body 1 is provided with a receiving groove 11, and a water filter hole 17 penetrating from the side and bottom of the box body 1 to the receiving groove 11. The sludge is configured with a flocculant and then loaded into a filter bag, which is placed in the receiving groove 11. The pressure cover 2 and the receiving groove 11 clamp the filter bag, and the force applying member drives the pressure cover 2 to apply pressure to the filter bag to filter the filtrate. The collecting measuring cup 4 is arranged on the electronic scale 5 and receives the filtrate seeping out of the water filter hole 17.

[0031] Take a number of equal amounts of sludge from the sewage treatment plant, and configure different types of flocculants and dosages, such as 3 / 1000 to 5 / 1000 of polyacrylamide thickener (PAM), and put them into different sludges for stirring for the same length of time. Then put them into filter bags respectively and place them in the storage groove 11 of the box body 1 of each device. Then, the force-applying member applies the same pressure, and the pressure cover 2 cooperates with the storage groove 11 to clamp the filter bag, so that the moisture in the sludge in the filter bag is precipitated and flows into the collecting cup 4 through the water filter hole 17. The volume of the filtrate displayed in the collecting cup is converted to the volume of the sampled sludge to obtain the specific value of the dehydration performance of the flocculant.

[0032] In another embodiment, an electronic scale can be set under the collecting measuring cup. The electronic scale 5 displays the weight of the filtrate, which is converted into the weight of the sampled sludge to obtain the specific value of the flocculant dehydration performance, so that the type and dosage of the flocculant can be quickly and conveniently compared and adjusted according to the real-time changes in sludge properties.

[0033] The force applying member is a weight 3.

[0034] Static pressure is applied to the glands 2 of each group of detection devices by means of weights 3 of equal weight, and the filtrate pressed out in the same time is used for comparison and conversion.

[0035] A vertical screw 12 is provided on the bottom surface of the receiving groove 11 of the box body 1, and the pressure cover 2 is provided with a through hole and a nut 13 adapted to the vertical screw 12. The nut 13 is arranged on the end surface of the pressure cover 2 away from the filter bag and is tightened by a torque wrench to apply pressure to the pressure cover 2.

[0036] The nuts 13 of each group of detection devices are tightened with the same torque by using a torque wrench, and the nuts 13 are lifted and lowered along the vertical screw rod 12 to drive the gland 2 to apply pressure to the filter bag.

[0037] The device further comprises a collecting rack 6 , which is provided with a bucket-shaped groove 61 and a collecting hole 62 penetrating the lowest point of the bucket-shaped groove 61 . The box body 1 is arranged on the bucket-shaped groove 61 , and the collecting measuring cup 4 is arranged below the collecting hole 62 .

[0038] By adopting the above technical solution, the filtrate leaking out of the filter bag in the box body 1 leaks out from the collecting holes 62 of the box body 1 , and the filtrate is collected by the provided bucket-shaped groove 61 and is weighed in the collecting measuring cup 4 .

[0039] The box body 1 includes a side frame and a bottom plate 14 which are separately arranged. A plurality of raised platforms 15 are arranged on the bottom plate 14 . The plurality of raised platforms 15 form a flow channel 16 between the bottom plates 14 . The filter holes on the bottom plate 14 are arranged in the flow channel 16 .

[0040] The bottom of the filter bag is supported by the provided raised platform 15 so that the flow channel 16 passes through the bottom of the filter bag, thereby preventing the bottom surface of the filter bag from completely contacting the floor of the box body 1, resulting in the filtrate being unable to be discharged.

[0041] The box body 1 and the collecting tray are made of PE material.

[0042] The box body 1 and the collecting tray are made of non-absorbent materials to avoid affecting the discharge of the filtrate. In this application, PE material is preferred, and other non-absorbent materials can also be used equally.

[0043] The electronic scale 5 is connected to the computer data.

[0044] The filtrate mass value is obtained and transmitted to the computer for rapid conversion by the program.

[0045] The present application uses a detection device to quickly obtain the different filtrate masses of sludge when using different types and amounts of flocculants under the conditions of equal amount of sludge, same force and same time, and then converts the sludge mass percentage to obtain a numerical comparison of the dewatering performance of the current sewage treatment plant sludge with each type and amount of flocculants, thereby assisting the sewage treatment plant to quickly formulate a dosing plan and significantly reducing the sludge dosing cost.

[0046] So far, the technical solution of the present application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. Those skilled in the art should understand that the scope of protection of the present application is obviously not limited to these specific embodiments. Without departing from the principles of the present application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the scope of protection of the present application.

Claims

1. A sludge flocculant dehydration performance detection device, characterized in that: It includes a box body, a pressure cover, a force-applying member, a filter bag, a collecting measuring cup and an electronic scale. The box body is provided with a receiving groove and a water filter hole extending from the side and bottom of the box body to the receiving groove. The sludge is configured with a flocculant and then loaded into a filter bag, which is placed in the receiving groove. The pressure cover and the receiving groove clamp the filter bag, and the force-applying member drives the pressure cover to apply pressure to the filter bag to filter the filtrate. The collecting measuring cup receives the filtrate seeping out of the water filter hole.

2. A sludge flocculant dehydration performance detection device according to claim 1, characterized in that: A vertical screw is arranged on the bottom surface of the box body storage groove, and the gland is provided with a through hole and a nut adapted to the vertical screw. The nut is arranged on the end surface of the gland away from the filter bag and is tightened by a torque wrench to apply pressure to the gland.

3. A sludge flocculant dehydration performance detection device according to claim 1 or 2, characterized in that: The device also includes a collecting rack, which is provided with a bucket-shaped groove and a collecting hole that passes through the lowest point of the bucket-shaped groove. The box body is arranged on the bucket-shaped groove, and the collecting measuring cup is arranged below the collecting hole.

4. A sludge flocculant dehydration performance detection device according to claim 3, characterized in that: The box body comprises a side frame and a bottom plate which are arranged separately. A plurality of raised platforms are arranged on the bottom plate. The plurality of raised platforms form a flow channel between the bottom plates. The filter holes on the bottom plate are arranged in the flow channel.

5. A sludge flocculant dehydration performance detection device according to claim 4, characterized in that: The box body and the collecting tray are made of PE material.

6. A sludge flocculant dehydration performance detection device according to claim 5, characterized in that: The electronic scale is connected with computer data.

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