Wastewater treatment and recycling system

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a wastewater treatment and recycling system, which utilizes a collecting barrel to collect and primarily precipitate wastewater, is beneficial to precipitation and removal of large-particle substances and floccules in sewage, and is beneficial to subsequent neutralization treatment. And the precipitation barrel is used for carrying out primary dosing precipitation, so that large-particle substances and floccules in the sewage are further precipitated, and the subsequent treatment difficulty is reduced. The chemicals are neutralized in the mixing barrel, so that secondary chemical adding precipitation is realized, and the sewage treatment effect is improved. The bottom of the mixing barrel is communicated with the precipitation barrel through the circulating pipe, so that water containing a small amount of precipitates at the bottom of the mixing barrel can be effectively prevented from being pumped into the precipitation barrel, mud-water separation of the filter pressing mechanism in the later period is facilitated, and the treatment capacity of sewage treatment is reduced; and meanwhile, the water body with a small amount of precipitates can be continuously subjected to secondary precipitation in the precipitation barrel, so that the subsequent concentrated filter pressing is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a wastewater treatment and recycling system. Background Art

[0002] Whether it is urban domestic sewage or industrial wastewater, it needs to be purified before it can be discharged, otherwise it will seriously harm the environment. In addition, the harmful substances contained in industrial wastewater and urban domestic sewage are different, which leads to different treatment methods for the two. Especially industrial wastewater, in addition to conventional water-insoluble particulate matter, it generally only contains one or a small amount of multiple special substances that are soluble in water, so industrial wastewater treatment is more targeted. The conventional way of this treatment method is generally to add some agents so that the substances in the wastewater can react with the agents to obtain water-insoluble substances, which is conducive to the separation of these substances from water, and then achieve the purification effect.

[0003] For example, the patent with publication number CN211035359 U discloses a sewage treatment system based on sewage sedimentation equipment, which treats and purifies sewage based on the above principle. In this patent, the sewage pipeline is directly connected to the drug delivery pipeline, and then the mixed sewage is sent to the sedimentation equipment body for sedimentation, and then the sedimentation equipment is connected to the filter press. However, this treatment method only undergoes one sedimentation, and when there are relatively many particulate matters in the sewage, it is difficult to achieve one-time sedimentation to remove harmful substances in the sewage, resulting in poor sewage treatment effect. Moreover, the wastewater generated after the filtration is not recycled, resulting in waste and increased production costs. Utility Model Content

[0004] In order to achieve the above-mentioned purpose, the utility model provides a wastewater treatment and recycling system, comprising:

[0005] A collecting bucket is used to collect and initially precipitate wastewater, and a sludge discharge port is provided on one side of the bottom of the collecting bucket;

[0006] A sedimentation tank connected to the collection tank through a pipeline, and a sewage outlet is provided at the bottom of the sedimentation tank;

[0007] A mixing barrel, which is connected to the settling barrel through a pipeline, and the bottom of the mixing barrel is connected to the settling barrel through a circulation pipe, and a circulation pump is provided on the circulation pipe;

[0008] A plurality of temporary storage barrels, all of which are connected to the water outlet at the upper portion of the mixing barrel;

[0009] A dosing mechanism, the output end of which is connected to the sedimentation tank and the mixing tank, and is used to add a reagent to the sedimentation tank and the mixing tank for neutralization;

[0010] The filter press mechanism has an input end connected to the blood discharge port and the sewage discharge port, and a drainage end of the filter press mechanism connected to the mixing barrel.

[0011] In some possible embodiments, the filter press mechanism includes a filter press, a suction pump and a suction pipe, one end of the suction pipe is connected to a blood discharge port and a sewage discharge port respectively through a three-way pipe, the other end of the suction pipe is connected to the filter press, the suction pump is arranged on the suction pipe, and control valves are arranged on both ends of the three-way pipe respectively connected to the blood discharge port and the sewage discharge port, and the drainage end of the filter press is connected to a mixing barrel through a pipeline.

[0012] In some possible embodiments, the sludge discharge end of the filter press is connected to a sludge tank.

[0013] In some possible embodiments, filters are provided on the water inlet ends of the pipes between the collecting barrel and the sedimentation barrel and between the mixing barrel and the sedimentation barrel. The two filters are respectively located at the upper parts of the collecting barrel and the sedimentation barrel, and switch valves are provided on the pipes connected to the filters.

[0014] In some possible embodiments, a floating ring is provided on the circumference of the filter, and the floating ring enables the filter to be at least partially located above the liquid surface.

[0015] In some possible embodiments, a stirring mechanism is provided on the mixing barrel, and the stirring mechanism includes a mounting frame, a driving motor arranged on the mounting frame, and a stirring blade connected to the output end of the driving motor, the mounting frame is installed on the opening of the mixing barrel, and the stirring blade is placed in the mixing barrel.

[0016] In some possible embodiments, a power pump is provided on the pipelines between the collecting tank and the sedimentation tank and between the mixing tank and the sedimentation tank.

[0017] In some possible embodiments, a main pipe is provided in the middle and lower part of the mixing barrel, and the main pipe is connected to all the temporary storage barrels through a plurality of drain pipes. Solenoid valves are provided on all the drain pipes, and a liquid level switch is provided in each of the temporary storage barrels, and each of the liquid level switches is electrically connected to the solenoid valve on the corresponding drain pipe.

[0018] In some possible embodiments, the drug adding mechanism includes a drug storage tank, a drug delivery tube connected to the drug storage tank at one end, and a supply pump installed on the drug delivery tube; two drug spraying ring tubes are provided at the other end of the drug delivery tube, and each of the drug spraying ring tubes is respectively provided in the mixing barrel and the sedimentation barrel; a concentration meter is provided in the mixing barrel, and the concentration meter is electrically connected to the supply pump.

[0019] Compared with the prior art, the beneficial effects of the utility model are as follows: the wastewater treatment and recovery system of the utility model utilizes a collection barrel to collect and initially precipitate wastewater, which is conducive to the precipitation and removal of large particles and flocs in the sewage, and is conducive to the subsequent neutralization treatment. The sedimentation barrel is then used for a drug addition precipitation to further precipitate large particles and flocs in the sewage, reducing the difficulty of subsequent treatment. The agent is neutralized in the mixing barrel to achieve secondary drug addition precipitation, thereby improving the sewage treatment effect. Moreover, the bottom of the mixing barrel is connected to the sedimentation barrel through a circulation pipe, which can effectively reduce the water body containing a small amount of sediment at the bottom of the mixing barrel from being drawn into the sedimentation barrel, which is conducive to the subsequent mud and water separation by the filter press mechanism, and reduces the treatment capacity of the sewage treatment; at the same time, the water body with a small amount of sediment can continue to be precipitated for a second time in the sedimentation barrel, which is conducive to the subsequent centralized filter press. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 A schematic diagram of the structure of a wastewater treatment and recycling system provided by an embodiment of the utility model;

[0022] Figure 2 A schematic diagram of the structure of a wastewater treatment and recycling system provided by another embodiment of the utility model;

[0023] Figure 3 A schematic diagram of the structure of a wastewater treatment and recycling system provided in an improved embodiment of the utility model.

[0024] Reference numerals:

[0025] Collection bucket 10, blood stasis outlet 11, power pump 1a;

[0026] Sedimentation tank 20, sewage outlet 21;

[0027] Mixing barrel 30, circulation pipe 31, circulation pump 32, main pipe 33, drain pipe 34, solenoid valve 35, concentration meter 36;

[0028] Temporary storage tank 40, liquid level switch 41;

[0029] Dosing mechanism 50, medicine storage tank 51, medicine delivery pipe 52, supply pump 53, medicine spraying ring pipe 54;

[0030] Filter pressing mechanism 60, filter press 61, suction pump 62, suction pipe 63, tee pipe 64, control valve 65, sludge tank 66;

[0031] Filter 70, floating ring 71;

[0032] Switch valve 80;

[0033] Stirring mechanism 90 , mounting frame 91 , driving motor 92 , stirring blade 93 . DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. In the following, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, the meaning of "multiple" is two or more.

[0035] Reference Figures 1 to 3 A wastewater treatment and recycling system shown in the figure includes a collecting barrel 10, a sedimentation barrel 20, a mixing barrel 30, a plurality of temporary storage barrels 40, a dosing mechanism 50 and a filter press mechanism 60. The collecting barrel 10 is used to collect and initially precipitate wastewater, and a blood stasis outlet 11 is provided on one side of the bottom of the collecting barrel 10; the sedimentation barrel 20 is connected to the collecting barrel 10 through a pipeline, and a sewage outlet 21 is provided at the bottom of the sedimentation barrel 20; the mixing barrel 30 is connected to the sedimentation barrel 20 through a pipeline, and the bottom of the mixing barrel 30 is connected to the sedimentation barrel 20 through a circulation pipe 31, and a circulation pump 32 is provided on the circulation pipe 31; the plurality of temporary storage barrels 40 are all connected to the water outlet at the top of the mixing barrel 30; the output end of the dosing mechanism 50 is connected to the sedimentation barrel 20 and the mixing barrel 30, and is used to add agents to the sedimentation barrel 20 and the mixing barrel 30 for neutralization; the input end of the filter press mechanism 60 is connected to the blood stasis outlet 11 and the sewage outlet 21, and the drainage end of the filter press mechanism 60 is connected to the mixing barrel 30.

[0036] The flow of sewage between the collection barrel 10 and the sedimentation barrel 20, and between the sedimentation barrel 20 and the mixing barrel 30 can be realized by automatic flow depending on the height difference. Of course, in some embodiments, a power pump 1a is provided on the pipeline between the collection barrel 10 and the sedimentation barrel 20, and between the mixing barrel 30 and the sedimentation barrel 20. Such a design is conducive to flow control and facilitates later maintenance. The circulating pump 32 can effectively pump the sewage with sediment at the bottom of the mixing barrel 30 back into the sedimentation barrel 20, which is conducive to secondary sedimentation and further ensures the sewage treatment effect.

[0037] The wastewater treatment and recovery system uses a collection barrel 10 to collect and initially precipitate wastewater, which is conducive to the precipitation and removal of large particles and flocs in the sewage, and is conducive to the subsequent neutralization treatment. Then, the sedimentation barrel 20 is used for a drug addition precipitation to further precipitate large particles and flocs in the sewage, reducing the difficulty of subsequent treatment. The agent is neutralized in the mixing barrel 30 to achieve secondary drug addition precipitation, which improves the treatment effect of the sewage. Moreover, the bottom of the mixing barrel 30 is connected to the sedimentation barrel 20 through a circulation pipe 31, which can effectively reduce the water body containing a small amount of sediment at the bottom of the mixing barrel 30 from being drawn into the sedimentation barrel 20, which is conducive to the subsequent mud and water separation by the filter press mechanism 60, reducing the treatment capacity of the sewage treatment; at the same time, these water bodies with a small amount of sediment can continue to be precipitated for a second time in the sedimentation barrel 20, which is conducive to the subsequent centralized filter press.

[0038] In some possible embodiments, reference Figure 2 As shown, the filter press mechanism 60 includes a filter press 61, a suction pump 62 and a suction pipe 63. One end of the suction pipe 63 is connected to the sludge discharge port 11 and the sewage discharge port 21 respectively through a three-way pipe 64, and the other end of the suction pipe 63 is connected to the filter press 61. The suction pump 62 is arranged on the suction pipe 63. The two ends of the three-way pipe 64 that are connected to the sludge discharge port 11 and the sewage discharge port 21 are provided with control valves 65. Among them, the suction operation of the bottom sedimentation sludge and sewage on the sedimentation barrel 20 and the collection barrel 10 can be realized by controlling the opening and closing of the control valves 65 on different pipelines of the three-way pipe 64, so that only one suction pump 62 is needed to realize the suction work of the sedimentation barrel 20 and the collection barrel 10. It should be particularly noted that the suction pump 62 is arranged on one end of the three-way pipe 64 close to the filter press 61. In addition, part of the sewage discharged by the filter press 61 has not been neutralized with a chemical. In order to achieve reuse and avoid the unneutralized part of the sewage affecting subsequent use, in the present application, the discharge end of the filter press 61 is connected to the mixing barrel 30 through a pipe, so that the water after filtration can be neutralized by passing through the mixing barrel 30 to solve the above-mentioned problem.

[0039] In the above-mentioned improvement scheme, in order to facilitate the subsequent treatment of the sludge generated after filtration, the sludge discharge end of the filter press 61 is connected to a sludge tank 66 .

[0040] In some possible embodiments, reference Figure 2As shown, since sewage contains a lot of large particles, in order to protect some equipment in the entire treatment system, in one embodiment of the present application, the pipes between the collection barrel 10 and the sedimentation barrel 20 and the mixing barrel 30 and the sedimentation barrel 20 are both provided with filters 70 at one end of the water inlet, and the two filters 70 are respectively located at the upper part of the collection barrel 10 and the sedimentation barrel 20, and the pipes connected to the filters 70 are both provided with switch valves 80. The filter 70 is designed in a replaceable manner, and it can be a conventional filter head structure.

[0041] In some possible embodiments, in order to enable the filter 70 to adapt to the liquid level inside the collection barrel 10 and the sedimentation barrel 20, in one embodiment of the present application, a floating ring 71 is provided on the peripheral side of the filter 70, and the floating ring 71 enables the filter 70 to be at least partially located above the liquid surface.

[0042] See also Figure 3 In order to improve the efficiency of sewage treatment and ensure that the sewage and the agent are fully mixed, in one embodiment of the present application, a stirring mechanism 90 is provided on the mixing barrel 30, and the stirring mechanism 90 includes a mounting frame 91, a driving motor 92 provided on the mounting frame 91, and a stirring blade 93 connected to the output end of the driving motor 92. The mounting frame 91 is installed on the opening of the mixing barrel 30, and the stirring blade 93 is placed in the mixing barrel 30. Of course, in some embodiments, a circulation pipeline and a body can be used to achieve full mixing of sewage and the agent; specifically, the upper end and the lower end of the mixing barrel 30 are respectively connected to the two ends of a pipeline, and then a pump body is provided on the pipeline, so that the sewage and the agent in the mixing barrel 30 can be fully mixed.

[0043] In the above-mentioned improved embodiment, in order to facilitate the discharge of the neutralized sewage, a main pipe 33 is provided in the middle and lower part of the mixing barrel 30, and the main pipe 33 is respectively connected to all temporary storage barrels 40 through a plurality of drainage pipes 34, and a solenoid valve 35 is provided on all drainage pipes 34. A liquid level switch 41 is provided in each temporary storage barrel 40, and each liquid level switch 41 is electrically connected to the solenoid valve 35 on the corresponding drainage pipe 34. The design of the solenoid valve 35 can facilitate the staff to transfer the filled temporary storage barrel 40, and the design of the liquid level switch 41 and the solenoid valve 35 can realize automatic filling of the treated sewage to a large extent.

[0044] In some possible embodiments, reference Figure 3As shown, in order to better achieve the addition of drugs, the drug adding mechanism 50 includes a drug storage tank 51, a drug delivery pipe 52 connected to the drug storage tank 51 at one end, and a supply pump 53 installed on the drug delivery pipe 52. Two drug spraying ring pipes 54 are arranged at the other end of the drug delivery pipe 52, and each drug spraying ring pipe 54 is respectively arranged in the mixing barrel 30 and the sedimentation barrel 20; a concentration meter 36 is arranged in the mixing barrel 30, and the concentration meter 36 is electrically connected to the supply pump 53. The concentration meter 36 is mainly used to measure the concentration of the substance to be neutralized in the sewage, and the drug spraying ring pipe 54 can ensure the uniformity of drug addition to a certain extent.

[0045] The above is only a specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A wastewater treatment and recycling system, characterized in that: include: A collecting bucket is used to collect and initially precipitate wastewater, and a sludge discharge port is provided on one side of the bottom of the collecting bucket; A sedimentation tank connected to the collection tank through a pipeline, and a sewage outlet is provided at the bottom of the sedimentation tank; A mixing barrel, which is connected to the settling barrel through a pipeline, and the bottom of the mixing barrel is connected to the settling barrel through a circulation pipe, and a circulation pump is provided on the circulation pipe; A plurality of temporary storage barrels, all of which are connected to the water outlet at the upper portion of the mixing barrel; A dosing mechanism, the output end of which is connected to the sedimentation tank and the mixing tank, and is used to add a reagent to the sedimentation tank and the mixing tank for neutralization; The filter press mechanism has an input end connected to the blood discharge port and the sewage discharge port, and a drainage end of the filter press mechanism connected to the mixing barrel.

2. A wastewater treatment and recycling system according to claim 1, characterized in that: The filter press mechanism includes a filter press, a suction pump and a suction pipe, one end of the suction pipe is connected to a blood discharge port and a sewage discharge port respectively through a three-way pipe, the other end of the suction pipe is connected to the filter press, the suction pump is arranged on the suction pipe, and control valves are arranged on both ends of the three-way pipe respectively connected to the blood discharge port and the sewage discharge port, and the drainage end of the filter press is connected to a mixing barrel through a pipeline.

3. A wastewater treatment and recycling system according to claim 2, characterized in that: The mud discharge end of the filter press is connected with a sludge tank.

4. A wastewater treatment and recycling system according to claim 1, characterized in that: The pipes between the collecting barrel and the settling barrel and between the mixing barrel and the settling barrel are provided with filters at one end where water enters. The two filters are respectively located at the upper part of the collecting barrel and the settling barrel, and the pipes connected to the filters are provided with switch valves.

5. A wastewater treatment and recycling system according to claim 4, characterized in that: A floating ring is arranged on the peripheral side of the filter, and the floating ring enables the filter to be at least partially located above the liquid surface.

6. A wastewater treatment and recycling system according to claim 1, characterized in that: The mixing barrel is provided with a stirring mechanism, which includes a mounting frame, a driving motor arranged on the mounting frame, and a stirring blade connected to the output end of the driving motor. The mounting frame is installed on the opening of the mixing barrel, and the stirring blade is placed in the mixing barrel.

7. A wastewater treatment and recycling system according to claim 1, characterized in that: Power pumps are arranged on the pipelines between the collecting barrel and the sedimentation barrel, and between the mixing barrel and the sedimentation barrel.

8. The wastewater treatment and recycling system according to claim 1, characterized in that: A main pipe is provided in the middle and lower part of the mixing barrel, and the main pipe is connected to all the temporary storage barrels through a plurality of drain pipes. All the drain pipes are provided with solenoid valves. A liquid level switch is provided in each temporary storage barrel, and each liquid level switch is electrically connected to the solenoid valve on the corresponding drain pipe.

9. A wastewater treatment and recycling system according to claim 1, characterized in that: The drug adding mechanism includes a drug storage tank, a drug delivery tube connected to the drug storage tank at one end, and a supply pump installed on the drug delivery tube. Two drug spraying ring tubes are arranged at the other end of the drug delivery tube, and each of the drug spraying ring tubes is respectively arranged in the mixing barrel and the sedimentation barrel; a concentration meter is arranged in the mixing barrel, and the concentration meter is electrically connected to the supply pump.

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