Temporary storage box for wastewater pretreatment

Abstract

The utility model provides a waste water pretreatment temporary storage box, which belongs to the technical field of fly ash washing water treatment, and comprises a plurality of temporary storage box bodies, each temporary storage box body is respectively provided with a first pipeline, a second pipeline and a third pipeline, the first pipeline comprises a dosing pipe and a plurality of first guide pipes, the second pipeline comprises a filtrate pipe and a plurality of second guide pipes, and the third pipeline is connected with the filtrate pipe. The third pipeline comprises an aeration pipe and a plurality of third guide pipes, and the lower ends of the first guide pipe, the second guide pipe and the third guide pipes are respectively connected with the connectors on the corresponding temporary storage box bodies. The wastewater can be firstly fed into the wastewater pretreatment temporary storage tank for pretreatment, so that the wastewater quality treatment capability of upstream water treatment is improved, the impact on a downstream wastewater treatment system is reduced, the probability of collapse of the water treatment system is reduced, the normal production and operation of a company are ensured, and a certain application prospect is achieved.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of fly ash washing water treatment, in particular to a wastewater pretreatment temporary storage box. Background Art

[0002] Fly ash washing water refers to the wastewater obtained from the water washing of fly ash produced in industrial production processes such as coal-fired power plants. Fly ash is a fine particulate matter produced in the coal combustion process, which contains a certain amount of pollutants such as heavy metals and acidic gases. In order to reduce the pollution of fly ash to the environment, it is often washed with water. Water washing can remove some harmful substances in the fly ash.

[0003] The sources of fly ash include fly ash generated by domestic waste incineration enterprises and fly ash generated by hazardous waste incineration enterprises. Since the sources of materials for each incineration enterprise are different, the various components in the fly ash are varied. When it is found that the water quality of the wastewater to be treated suddenly fluctuates greatly, it exceeds the upper limit of the upstream incineration enterprise's treatment system to cope with such changes, and the changes in the fly ash composition bring an impact to the downstream wastewater treatment system. In severe cases, it will cause the water treatment system to collapse, affecting the company's normal production operations. Utility Model Content

[0004] The technical solution of the utility model aims at the technical problem that the existing technical solutions are too single, and provides a solution that is significantly different from the existing technologies. Specifically, the utility model mainly provides a wastewater pretreatment temporary storage box to solve the technical problem proposed in the above background technology that the current upstream incineration enterprise treatment system is unable to cope with the sudden large fluctuations in wastewater quality, thereby bringing shocks to the downstream wastewater treatment system, and in severe cases, causing the water treatment system to collapse.

[0005] The technical solution adopted by the utility model to solve the above technical problems is:

[0006] A wastewater pretreatment temporary storage box comprises a plurality of temporary storage boxes, each of which is respectively provided with a first pipeline, a second pipeline and a third pipeline, the first pipeline comprises a dosing pipe and a plurality of first conduits on the dosing pipe, the second pipeline comprises a filtrate pipe and a plurality of second conduits on the filtrate pipe, the third pipeline comprises an aeration pipe and a plurality of third conduits on the aeration pipe, and the lower ends of the first conduit, the second conduit and the third conduit are respectively connected to interfaces on the corresponding temporary storage boxes.

[0007] Furthermore, each of the temporary storage boxes is provided with a first outlet located at a high position and a second outlet located at a low position, and a first valve is provided on the first outlet and the second outlet.

[0008] Further, the first outlet and the second outlet on each of the temporary storage boxes are both commonly connected to a lead-out pipe, a sewage discharge pipe is arranged on the lead-out pipe, a compatibility pool is arranged at the lower end of the sewage discharge pipe, and a second valve is arranged on the sewage discharge pipe.

[0009] Further, the second pipeline further includes a filter press, a connecting pipe and a third valve on the connecting pipe are arranged on the filter press, and an adjustment tank is arranged at the lower end of the connecting pipe.

[0010] Further, fourth valves are arranged on the first conduit, the second conduit and the third conduit.

[0011] Further, a water outlet pipe is arranged on the adjustment tank, and the water outlet pipe is connected to the lead-out pipe. A fifth valve is arranged between the water outlet pipe and the lead-out pipe, and a water pump is arranged on the lead-out pipe.

[0012] Further, an aeration blower is arranged at one end of the aeration pipe.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] By arranging a plurality of temporary storage boxes, a first pipeline, a second pipeline, a third pipeline, a lead-out pipe and a water pump, the present utility model realizes adding a waste water pretreatment temporary storage tank in the current water treatment system. When there are large fluctuations in the quality of the waste water to be treated, the waste water can be first sent to the waste water pretreatment temporary storage tank for pretreatment to cope with the sudden large change in water quality. Then, the pH value of the waste water is adjusted for stratified precipitation treatment and introduced into the compatibility pool. When the suspended matter in the water outlet of the adjustment tank exceeds the standard, the water inlet of the adjustment tank can be stopped, and the temporary storage tank is used for temporary treatment, providing time for the cleaning work of the adjustment tank, increasing the ability of the upstream water treatment to cope with the waste water quality, reducing the impact on the downstream waste water treatment system, reducing the probability of the water treatment system collapsing, ensuring the normal production operation of the company, and having certain practical value and application prospects.

[0015] The following will combine the drawings with specific embodiments to explain the present utility model in detail. Description of the Drawings

[0016] Figure 1 It is a schematic plan view of the temporary storage box of the present utility model;

[0017] Figure 2 It is a schematic connection diagram of the temporary storage box, the adjustment tank and the compatibility pool of the present utility model.

[0018] In the figure: 1. Temporary storage box body; 11. First outlet; 12. Second outlet; 13. First valve; 14. Discharge pipe; 15. Water pump; 16. Sewage pipe; 17. Compatibility pool; 18. Second valve; 2. First pipeline; 21. Chemical addition pipe; 22. First conduit; 3. Second pipeline; 31. Filtrate pipe; 32. Second conduit; 33. Filter press; 34. Connecting pipe; 35. Third valve; 4. Third pipeline; 41. Aeration pipe; 42. Third conduit; 43. Aeration blower; 5. Fourth valve; 6. Regulation tank; 61. Outlet pipe; 62. Fifth valve. Specific embodiments

[0019] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present utility model are given in the drawings. However, the present utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the present utility model more thorough and comprehensive.

[0020] It should be noted that when an element is referred to as being "fixedly provided on" another element, it can be directly on the other element or there can be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are only for the purpose of illustration.

[0021] Unless otherwise defined, all technical and scientific terms used in this article have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the specification of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used in this article includes any and all combinations of one or more of the related listed items.

[0022] Please refer specifically to the attached Figure 1-2 , a wastewater pretreatment temporary storage tank, comprising a plurality of temporary storage box bodies 1. A first pipeline 2, a second pipeline 3 and a third pipeline 4 are respectively arranged on each of the temporary storage box bodies 1. The first pipeline 2 includes a chemical addition pipe 21 and a plurality of first conduits 22 on the chemical addition pipe 21. The second pipeline 3 includes a filtrate pipe 31 and a plurality of second conduits 32 on the filtrate pipe 31. The third pipeline 4 includes an aeration pipe 41 and a plurality of third conduits 42 on the aeration pipe 41. The lower ends of the first conduit 22, the second conduit 32 and the third conduit 42 are respectively connected to the interfaces on the corresponding temporary storage box body 1.

[0023] With the above structure, a wastewater pretreatment temporary storage tank 1 is added to the current water treatment system. When there are large fluctuations in the quality of the wastewater to be treated, the wastewater can be first sent to the wastewater pretreatment temporary storage tank for pretreatment to adjust the pH value of the wastewater and perform stratified sedimentation treatment. When the suspended solids in the effluent of the regulating tank 6 exceed the standard, the inlet of the regulating tank 6 can be stopped, and the temporary storage tank can be used for temporary treatment, providing time for the cleaning work of the regulating tank 6, increasing the ability of the upstream water treatment to handle the wastewater quality, reducing the impact on the downstream wastewater treatment system, reducing the probability of the water treatment system crashing, ensuring the normal production operation of the company, and having certain practical value and application prospects.

[0024] The specific operation is as follows. When certain heavy metals such as zinc in the fly ash washing water exceed the standard, since zinc is an amphoteric metal and it is difficult to effectively remove under the conditions of the heavy metal removal tank, it is then introduced into the temporary storage tank 1. Subsequently, through the first pipeline 2, an appropriate amount of alkali solution is added to the temporary storage tank 1 to adjust the pH value of the wastewater to make it precipitate. Then, through stratification, the precipitate is sent to the blending tank 17 through the second outlet 12, the outlet pipe 14, and the sewage pipe 16 located at the lower position.

[0025] When the ammonia nitrogen in the water after fly ash washing in some fly ash incineration enterprises is as high as 700 mg / m 3 , if it directly enters the water treatment, it will cause the system to crash. After this water is sent to the wastewater temporary storage tank 1, medicine is added through the first pipeline 2. First, the pH value is adjusted to ~10.5, and then the aeration blower 43 is turned on. Through the aeration pipe 41 and the third conduit 42, continuous aeration is carried out to strip ammonia nitrogen and reduce its ammonia nitrogen content to an appropriate range.

[0026] When the regulating tank 6 has problems, such as a large amount of solid particles deposited at the bottom of the regulating tank 6 and the suspended solids in the effluent exceeding the standard, the third valve 35 on the connecting pipe 34 is closed to stop the inlet of the regulating tank 6. Then, the filtrate of the filter press 33 is directly introduced into the temporary storage tank 1 through the filtrate pipe 31 and the second conduit 32, and then directly sent to the outlet pipe 61 of the regulating tank 6 through the first outlet 11, the outlet pipe 14, and the water pump 15. During this process, the cleaning work of the regulating tank 6 can be carried out.

[0027] Please refer specifically to the appendix Figure 2, on each of the temporary storage boxes 1, there are a first outlet 11 at a high position and a second outlet 12 at a low position, and first valves 13 are provided on both the first outlet 11 and the second outlet 12. Through the first valves 13, the on-off control of the outlets of the temporary storage box 1 is realized. The first outlet 11 and the second outlet 12 on each of the temporary storage boxes 1 are both commonly connected to a lead-out pipe 14. A sewage discharge pipe 16 is provided on the lead-out pipe 14. The lower end of the sewage discharge pipe 16 is provided with a compatibility pool 17, and a second valve 18 is provided on the sewage discharge pipe 16. The compatibility pool 17 is a facility used to treat waste liquids of different natures in the fields of chemical engineering, environmental protection, etc. Its main function is to mix waste waters of different types and different concentrations according to a certain ratio and method. The second pipeline 3 further includes a filter press 33. A connecting pipe 34 and a third valve 35 on the connecting pipe 34 are provided on the filter press 33. The lower end of the connecting pipe 34 is provided with an adjustment tank 6. Through the third valve 35, the on-off control of the connecting pipe 34 is realized. Fourth valves 5 are provided on the first conduit 22, the second conduit 32, and the third conduit 42. The fourth valves 5 control the on-off of the conduits. And the third conduit 42 is inserted into the bottom of the temporary storage box 1, which is beneficial for aeration. An outlet pipe 61 is provided on the adjustment tank 6, and the outlet pipe 61 is connected to the lead-out pipe 14. A fifth valve 62 is provided between the outlet pipe 61 and the lead-out pipe 14. A water pump 15 is provided on the lead-out pipe 14. Through the water pump 15, the efficiency of water conveyance is improved. One end of the aeration pipe 41 is provided with an aeration blower 43. Through the aeration blower 43, the supply of air source to the third conduit 42 is realized.

[0028] The above has made an exemplary description of the present invention in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above methods. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A wastewater pretreatment temporary storage tank, comprising a plurality of temporary storage boxes (1), characterized in that, Each of the temporary storage boxes (1) is respectively provided with a first pipeline (2), a second pipeline (3) and a third pipeline (4). The first pipeline (2) includes a chemical addition pipe (21) and a plurality of first conduits (22) on the chemical addition pipe (21). The second pipeline (3) includes a filtrate pipe (31) and a plurality of second conduits (32) on the filtrate pipe (31). The third pipeline (4) includes an aeration pipe (41) and a plurality of third conduits (42) on the aeration pipe (41). The lower ends of the first conduit (22), the second conduit (32) and the third conduit (42) are respectively connected to the interfaces on the corresponding temporary storage box (1).

2. The wastewater pretreatment temporary storage tank according to claim 1, characterized in that, Each of the temporary storage boxes (1) is provided with a first outlet (11) at a high position and a second outlet (12) at a low position, and first valves (13) are provided on both the first outlet (11) and the second outlet (12).

3. The wastewater pretreatment temporary storage tank according to claim 2, characterized in that, The first outlets (11) and the second outlets (12) on each of the temporary storage boxes (1) are commonly connected to a lead-out pipe (14). A sewage discharge pipe (16) is provided on the lead-out pipe (14). The lower end of the sewage discharge pipe (16) is provided with a compatibility pool (17), and a second valve (18) is provided on the sewage discharge pipe (16).

4. A wastewater pretreatment temporary storage tank according to claim 1, characterized in that, The second pipeline (3) further includes a filter press (33). A connecting pipe (34) and a third valve (35) on the connecting pipe (34) are provided on the filter press (33). The lower end of the connecting pipe (34) is provided with an adjustment tank (6).

5. A wastewater pretreatment temporary storage tank according to claim 1, characterized in that, Fourth valves (5) are provided on each of the first conduit (22), the second conduit (32) and the third conduit (42).

6. The temporary storage tank for wastewater pretreatment according to claim 4, wherein An outlet pipe (61) is provided on the adjustment tank (6). The outlet pipe (61) is connected to the lead-out pipe (14). A fifth valve (62) is provided between the outlet pipe (61) and the lead-out pipe (14). A water pump (15) is provided on the lead-out pipe (14).

7. A wastewater pretreatment temporary storage tank according to claim 1, characterized in that, One end of the aeration pipe (41) is provided with an aeration blower (43).

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