Wastewater treatment system and treatment method

Abstract

The application relates to a sewage treatment system and a treatment method. The sewage treatment system comprises a biochemical reaction device and a feeding device. The biochemical reaction device comprises at least one set of reaction modules. The reaction modules comprise a plurality of reaction units. Each reaction unit of each reaction module is communicated with at least another reaction unit through a communication component. The feeding device is communicated with each reaction unit respectively. The feeding device can feed adsorbing materials to each reaction unit respectively. The application provides a sewage treatment system and a treatment method, which can improve the removal effect of small-molecule organic matters in sewage.

Description

Technical Field

[0001] This application relates to the field of wastewater treatment technology, and in particular to a wastewater treatment system and treatment method. Background Technology

[0002] With the increase in industrial and domestic water use, the total amount of wastewater discharged is constantly increasing, posing a serious threat to the environment. Therefore, in order to reduce the harm caused by wastewater discharge to the environment, it is necessary to treat wastewater to reduce harmful substances in the wastewater and improve the water quality when the treated wastewater is discharged.

[0003] Most existing wastewater treatment systems include a biological reaction tank where wastewater undergoes biological reactions. However, in actual use, it has been found that this treatment method is not ideal for removing small-molecule organic matter from wastewater. Summary of the Invention

[0004] This application provides a wastewater treatment system and method that can improve the removal efficiency of small molecule organic matter in wastewater.

[0005] On the one hand, according to the embodiments of this application, a sewage treatment system is proposed, wherein the sewage treatment system includes a biochemical reaction device and a dispensing device. The biochemical reaction device includes at least one set of reaction modules, and each reaction module includes multiple reaction units. Each reaction unit of each reaction module is connected to at least one other reaction unit through a connecting component. The dispensing device is connected to each reaction unit respectively, and the dispensing device can dispense adsorbent material to each reaction unit respectively.

[0006] According to one aspect of the embodiments of this application, the reaction unit includes a reaction chamber, an aerator, and a stirrer. The reaction chamber has a cavity inside. The aerator is disposed inside the reaction chamber and is located at the bottom of the reaction chamber. The stirrer is disposed inside the reaction chamber and is located above the aerator.

[0007] According to one aspect of an embodiment of this application, the connecting component includes a transverse connecting pipe, a longitudinal outlet pipe, and a longitudinal inlet pipe. The transverse connecting pipe has a first end and a second end. The upper ends of the longitudinal outlet pipe and the longitudinal inlet pipe are both connected to the transverse connecting pipe. Valves are provided at the first end of the transverse connecting pipe, the second end of the transverse connecting pipe, the longitudinal inlet pipe, and the longitudinal outlet pipe. The first end of the transverse connecting pipe and the longitudinal outlet pipe are located inside a reaction chamber. The first end of the transverse connecting pipe is close to the top of the reaction chamber, and the lower end of the longitudinal outlet pipe extends to the bottom of the reaction chamber.

[0008] The second end of the horizontal connecting pipe and the vertical water inlet pipe are located inside another reaction chamber. The second end of the horizontal connecting pipe is close to the top of the reaction chamber, and the vertical water inlet pipe extends to the bottom of the reaction chamber.

[0009] According to one aspect of an embodiment of this application, the reaction module is provided in two groups: a first reaction module and a second reaction module. The first reaction module includes a first reaction unit, a second reaction unit, and a third reaction unit. The second reaction module includes a fourth reaction unit, a fifth reaction unit, and a sixth reaction unit. The first reaction unit and the second reaction unit, the second reaction unit and the third reaction unit, the third reaction unit and the fourth reaction unit, the fourth reaction unit and the fifth reaction unit, and the fifth reaction unit and the sixth reaction unit are all connected by connecting components.

[0010] According to one aspect of the embodiments of this application, the first reaction unit and the fourth reaction unit are connected by a connecting pipe, one end of the connecting pipe is connected to a connecting component connecting the first reaction unit and the second reaction unit, and the other end of the connecting pipe is connected to a connecting component connecting the third reaction unit and the fourth reaction unit.

[0011] According to one aspect of the embodiments of this application, the dispensing device includes a dispensing box, a dispensing main pipe and a plurality of dispensing branch pipes. The dispensing box contains adsorbent material. The dispensing main pipe is connected to the dispensing box and is equipped with a dispensing pump and a flow meter. Each dispensing branch pipe is connected to the dispensing main pipe and each dispensing branch pipe is connected to a reaction unit. Each dispensing branch pipe is equipped with a valve.

[0012] According to one aspect of the embodiments of this application, the wastewater treatment system further includes an inlet device, which is connected to the first reaction unit and the fourth reaction unit; the inlet device includes an inlet tank, an inlet pipe, a stirrer inlet main pipe and two water supply pipes, the inlet tank having an internal cavity; the inlet pipe being connected to the interior of the inlet tank and capable of supplying wastewater into the inlet tank; the stirrer being disposed inside the inlet tank; the water supply main pipe being connected to the inlet tank and equipped with a water supply pump; both water supply pipes being connected to the water supply main pipe, one water supply pipe being connected to the first reaction unit and the other water supply pipe being connected to the fourth reaction unit, and both water supply pipes being equipped with valves and flow meters.

[0013] According to one aspect of the embodiments of this application, the water inlet device further includes a filter and a baffle. The filter is disposed inside the water inlet tank and is connected to the water inlet pipe. The baffle is longitudinally disposed inside the water inlet tank. The upper end of the baffle is connected to the top of the water inlet tank, and a water passage gap is formed between the lower end of the baffle and the bottom of the water inlet tank. The baffle divides the cavity of the water inlet tank into a first cavity and a second cavity that are connected. The water inlet pipe is connected to the upper part of the first cavity, and the main water supply pipe is connected to the lower part of the second cavity. The filter is disposed in the first cavity, and the stirrer is disposed in the second cavity.

[0014] According to one aspect of the embodiments of this application, the sewage treatment system further includes an effluent device, which is connected to the sixth reaction unit. The effluent device includes an effluent tank, a water collection pipe, a water distributor, and an effluent pipe. The interior of the effluent tank has a cavity. The water collection pipe is connected to the sixth reaction unit. The water distributor is located inside the effluent tank and has a water collection end and a water distribution end. The water collection end is connected to the water collection pipe, and the water distribution end extends to the bottom of the effluent tank. The effluent pipe is connected to the effluent tank at the top.

[0015] According to one aspect of the embodiments of this application, the water outlet device further includes a water collection weir, which is disposed inside the water outlet tank, and the water outlet pipe is connected to the water collection weir.

[0016] According to one aspect of the embodiments of this application, the water discharge device further includes a sludge collection component, which is disposed inside the water discharge tank and located at the bottom of the water discharge tank. The sludge collection component can collect the sludge mixed in the liquid entering the water discharge tank from the sixth reaction unit to the central position at the bottom of the water discharge tank.

[0017] According to one aspect of the embodiments of this application, the wastewater treatment system further includes an air supply device, which is connected to the aerators of each reaction unit; the air supply device includes a blower, a main air supply pipe and multiple branch air supply pipes; the main air supply pipe is connected to the blower and is equipped with a pressure gauge and a flow meter; each branch air supply pipe is connected to the main air supply pipe and each branch air supply pipe is connected to the aerator of a reaction unit, and each branch air supply pipe is equipped with a valve.

[0018] According to one aspect of the embodiments of this application, the wastewater treatment system further includes a return device, which includes a first return main pipe, a second return main pipe, a third return main pipe, a first return branch pipe, and a second return branch pipe. The first reflux main is connected to both the first and third reaction units, allowing liquid from the third reaction unit to flow back to the first reaction unit via the first reflux main; the second reflux main is connected to both the second and fourth reaction units, allowing liquid from the fourth reaction unit to flow back to the second reaction unit via the second reflux main; the third reflux main is connected to the sixth reaction unit; the first reflux branch is connected to both the third reflux main and the fourth reaction unit, allowing liquid from the sixth reaction unit to flow back to the fourth reaction unit via the third reflux main and the first reflux branch; the second reflux branch is connected to both the third reflux main and the fifth reaction unit, allowing liquid from the sixth reaction unit to flow back to the fifth reaction unit via the third reflux main and the second reflux branch; each of the first, second, and third reflux mains is equipped with a reflux pump and a flow meter; each of the first, second, and third reflux mains is equipped with a valve.

[0019] According to one aspect of the embodiments of this application, the wastewater treatment system further includes a sludge discharge device, which includes a sludge discharge pipe, a sludge outlet pipe, and a sludge return pipe. The sludge discharge pipe is connected to the bottom of the effluent tank and is equipped with a discharge pump; the sludge outlet pipe is connected to the sludge discharge pipe and is equipped with a valve; the sludge return pipe is connected to both the sludge discharge pipe and the first reaction unit, and is equipped with a valve and a flow meter.

[0020] According to one aspect of the embodiments of this application, the wastewater treatment system further includes a control device, which is electrically connected to the biochemical reaction device and the dosing device respectively.

[0021] In another aspect, a wastewater treatment method according to an embodiment of this application is implemented using the wastewater treatment system described above; the wastewater treatment method includes:

[0022] Wastewater is introduced into the biochemical reaction device, so that the wastewater flows into at least one reaction unit of at least one set of reaction modules in the biochemical reaction device;

[0023] Adjust the oxygen content of the liquid in the reaction unit through which the wastewater is introduced;

[0024] Add adsorbent material to the reaction unit through which wastewater is introduced;

[0025] Collect or discharge the processed liquid from the reaction unit.

[0026] According to one aspect of the embodiments of this application, wastewater is introduced into a biochemical reaction apparatus, causing the wastewater to flow into at least one reaction unit of at least one set of reaction modules in the biochemical reaction apparatus, comprising:

[0027] Wastewater is introduced into at least one reaction unit;

[0028] The wastewater-introducing reaction unit is connected sequentially to multiple other reaction units, allowing the wastewater to flow sequentially into each reaction unit for biochemical reactions.

[0029] According to one aspect of the embodiments of this application, adjusting the oxygen content of the liquid in the reaction unit through which wastewater is introduced includes:

[0030] The liquid in at least one reaction unit is stirred to create an anaerobic environment inside the reaction unit; and / or

[0031] Gas is introduced into the liquid in at least one reaction unit to create an aerobic environment inside the reaction unit; and / or

[0032] Gas is introduced into the liquid in at least one reaction unit and stirred to create an oxygen-deficient environment inside the reaction unit.

[0033] According to one aspect of the embodiments of this application, an adsorbent material is added to a reaction unit through which wastewater is introduced, including:

[0034] An adsorbent is added to at least one of the reaction units that form an anaerobic environment, a reaction unit that forms an anoxic environment, and a reaction unit that forms an aerobic environment; the addition ratio of the adsorbent is 10 mg / L to 30 mg / L.

[0035] According to one aspect of the embodiments of this application, before introducing wastewater into the biochemical reaction device, the wastewater treatment method further includes:

[0036] Filtering wastewater removes some of the impurities from it;

[0037] The wastewater is stirred to make the wastewater quality uniform.

[0038] According to one aspect of the embodiments of this application, collecting or discharging the processed liquid in the reaction unit includes:

[0039] The liquid that has completed the biochemical reaction is precipitated to separate the liquid into supernatant and sludge.

[0040] Collect or discharge the supernatant;

[0041] Part of the sludge is discharged and / or part of the sludge is returned to at least one reaction unit.

[0042] The wastewater treatment system and method provided in this application can effectively adsorb and remove small molecule organic matter in wastewater by adding adsorbent materials to the reaction units of each reaction module in the biochemical reaction process, thereby effectively improving the removal effect of small molecule organic matter in wastewater and improving the quality of wastewater treatment. Attached Figure Description

[0043] The features, advantages, and technical effects of exemplary embodiments of this application will now be described with reference to the accompanying drawings.

[0044] Figure 1 This is a schematic diagram of the wastewater treatment system according to an embodiment of this application;

[0045] Figure 2 This is a schematic diagram of the structure of the biochemical reaction device of the wastewater treatment system according to an embodiment of this application;

[0046] Figure 3 This is a schematic diagram of the structure of the water inlet device of the wastewater treatment system according to an embodiment of this application;

[0047] Figure 4 This is a schematic diagram of the structure of the effluent device of the wastewater treatment system according to an embodiment of this application;

[0048] Figure 5 This is a flowchart of a wastewater treatment method according to an embodiment of this application.

[0049] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not drawn to scale.

[0050] Explanation of icon numbers:

[0051] 1. Biochemical reaction apparatus; 11. First reaction module; 111. First reaction unit; 1111. Reaction chamber; 1112. Aerator; 1113. Stirrer; 112. Second reaction unit; 113. Third reaction unit; 12. Second reaction module; 121. Fourth reaction unit; 122. Fifth reaction unit; 123. Sixth reaction unit; 13. Connecting components; 131. Horizontal connecting pipe; 132. Longitudinal outlet pipe; 133. Longitudinal inlet pipe; 134. Connecting pipe;

[0052] 2. Dispensing device; 21. Dispensing tank; 22. Dispensing main pipe; 221. Dispensing pump; 23. Dispensing branch pipe; 24. Dispensing level gauge;

[0053] 3. Water inlet device; 31. Water inlet tank; 311. First chamber; 312. Second chamber; 32. Water inlet pipe; 33. Agitator; 34. Main water supply pipe; 341. Water supply pump; 342. Check valve; 35. Water supply branch pipe; 36. Filter; 37. Baffle plate; 371. Water passage gap; 38. Water inlet level gauge;

[0054] 4. Water outlet device; 41. Water outlet tank; 42. Water collection pipe; 43. Water distributor; 44. Water outlet pipe; 45. Water collection weir; 46. Mud collection component;

[0055] 5. Gas supply device; 51. Blower; 52. Main gas supply pipe; 521. Pressure gauge; 53. Branch gas supply pipes;

[0056] 6. Reflux device; 61. First reflux main pipe; 62. Second reflux main pipe; 63. Third reflux main pipe; 64. First reflux branch pipe; 65. Second reflux branch pipe; 66. Reflux pump;

[0057] 7. Sludge discharge device; 71. Sludge discharge pipe; 711. Discharge pump; 72. Sludge discharge pipe; 73. Sludge return pipe; 74. Effluent level gauge;

[0058] 8. Control device;

[0059] A. Flow meter. Detailed Implementation

[0060] The features and exemplary embodiments of various aspects of this application will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a comprehensive understanding of this application. However, it will be apparent to those skilled in the art that this application can be implemented without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this application by illustrating examples. In the accompanying drawings and the following description, at least some well-known structures and techniques are not shown to avoid unnecessarily obscuring the application; and, for clarity, the dimensions of some structures may be exaggerated. Furthermore, the features, structures, or characteristics described below can be combined in any suitable manner in one or more embodiments.

[0061] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of the wastewater treatment system and method of this application. It should also be noted in the description of this application that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections or indirect connections. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0062] Example 1

[0063] like Figure 1 As shown in the figure, this invention provides a wastewater treatment system, which includes a biochemical reaction device 1 and a dosing device 2. Wastewater undergoes a biochemical reaction in the biochemical reaction device 1 to degrade organic matter in the wastewater; simultaneously, adsorbent material is added to the biochemical reaction device 1 through the dosing device 2 to adsorb small-molecule organic matter in the wastewater; this combination of physical and chemical treatment improves the removal efficiency of organic matter in the wastewater.

[0064] The biochemical reaction device 1 includes at least one set of reaction modules, each reaction module comprising multiple reaction units. Each reaction unit of each reaction module is connected to at least one other reaction unit via a connecting component 13. During the biochemical reaction, wastewater can sequentially enter each reaction unit of each reaction module, or, depending on the type of biochemical reaction, wastewater can selectively enter some reaction units of some reaction modules.

[0065] Each reaction module can be connected in series and / or in parallel, and each reaction unit of each reaction module can also be connected in series and / or in parallel.

[0066] The dispensing device 2 is connected to each reaction unit. The dispensing device 2 can dispense adsorbent material into each reaction unit where sewage enters and carries out biochemical reactions, so that small molecule organic matter in the sewage can be adsorbed and removed by the adsorbent material during the biochemical reaction of sewage in each reaction unit.

[0067] Optionally, the adsorbent material is activated carbon, also known as activated carbon black. Activated carbon is a black amorphous carbon composed of 80% to 90% or more carbon elements, possessing a rich pore structure and a large surface area. Activated carbon can be classified into powdered activated carbon, granular activated carbon, and activated carbon fiber based on its appearance. Powdered activated carbon is mainly obtained by burning different substances, including coal, charcoal, and fruit shell charcoal. Given its readily available nature, powdered activated carbon is preferentially used in this application embodiment. However, it should be noted that activated carbon with other appearance forms can also be added to the wastewater treatment system provided in this application.

[0068] like Figure 1 and Figure 2 As shown, according to one aspect of the present invention, the reaction unit includes a reaction chamber 1111, an aerator 1112, and a stirrer 1113.

[0069] The interior of the reaction chamber 1111 has a cavity, which is a sealed chamber that provides a closed reaction space for the biochemical reaction, so as to reduce the impact of the external environment on the oxygen content of the wastewater in the cavity during the biochemical reaction.

[0070] Aerator 1112 is located inside reaction chamber 1111 and at the bottom of reaction chamber 1111; aerator 1112 can aerate the reaction chamber 1111 to increase the oxygen content in reaction chamber 1111.

[0071] The agitator 1113 is located inside the reaction tank 1111 and above the aerator 1112. The agitator 1113 can agitate the wastewater entering the reaction unit, making the wastewater in the reaction unit more uniform and improving the reaction effect. In addition, when it is necessary to reduce the oxygen content in the wastewater, the agitator 1113 can agitate the wastewater to allow the dissolved oxygen in the wastewater to escape.

[0072] like Figure 1 and Figure 2As shown, according to one aspect of the present invention, the connecting component 13 includes a transverse connecting pipe 131, a longitudinal outlet pipe 132 and a longitudinal inlet pipe 133. The transverse connecting pipe 131 has a first end and a second end. The upper ends of the longitudinal outlet pipe 132 and the longitudinal inlet pipe 133 are both connected to the transverse connecting pipe 131. Valves are provided on the first end of the transverse connecting pipe 131, the second end of the transverse connecting pipe 131, the longitudinal inlet pipe 133 and the longitudinal outlet pipe 132. The first end of the transverse connecting pipe 131 and the longitudinal outlet pipe 132 are located inside a reaction chamber 1111. The first end of the transverse connecting pipe 131 is close to the top of the reaction chamber 1111, and the lower end of the longitudinal outlet pipe 132 extends to the bottom of the reaction chamber 1111. The second end of the transverse connecting pipe 131 and the longitudinal inlet pipe 133 are located inside another reaction chamber 1111. The second end of the transverse connecting pipe 131 is close to the top of the reaction chamber 1111, and the longitudinal inlet pipe 32133 extends to the bottom of the reaction chamber 1111.

[0073] The tops of two adjacent reaction units can be connected through the transverse connecting pipe 131. The tops and bottoms of two adjacent reaction units can be connected through the longitudinal water outlet pipe 132 and the transverse connecting pipe 131 or the transverse connecting pipe 131 and the longitudinal water inlet pipe 133. The bottoms of two adjacent reaction units can be connected through the transverse connecting pipe 131, the longitudinal water inlet pipe 133 and the longitudinal water outlet pipe 132.

[0074] During the flow of wastewater through each reaction unit, the wastewater can enter from the top of the reaction unit and flow out from the bottom, or enter from the bottom of the reaction unit and flow out from the top, so as to achieve vertical circulation of wastewater within the reaction unit.

[0075] Alternatively, wastewater can flow in and out of the top of the reaction unit, or flow in and out of the bottom of the reaction unit.

[0076] The specific locations of the wastewater entering and exiting the reaction unit can be achieved by adjusting the valves on the transverse connecting pipe 131, the longitudinal inlet pipe 133 and / or the longitudinal outlet pipe 132. These can be flexibly adjusted according to actual reaction needs, and this application is not limited thereto.

[0077] like Figure 1 and Figure 2 As shown, according to one aspect of the present invention, the reaction module is provided in two groups, namely a first reaction module 11 and a second reaction module 12; the first reaction module 11 includes a first reaction unit 111, a second reaction unit 112 and a third reaction unit 113; the second reaction module 12 includes a fourth reaction unit 121, a fifth reaction unit 122 and a sixth reaction unit 123.

[0078] The first reaction unit 111 and the second reaction unit 112, the second reaction unit 112 and the third reaction unit 113, the third reaction unit 113 and the fourth reaction unit 121, the fourth reaction unit 121 and the fifth reaction unit 122, and the fifth reaction unit 122 and the sixth reaction unit 123 are all connected by the connecting component 13.

[0079] The first reaction module 11 and the second reaction module 12 are connected in series. The first reaction unit 111, the second reaction unit 112, the third reaction unit 113, the fourth reaction unit 121, the fifth reaction unit 122, and the sixth reaction unit 123 are sequentially connected in series. Wastewater can flow sequentially through the first reaction unit 111, the second reaction unit 112, the third reaction unit 113, the fourth reaction unit 121, the fifth reaction unit 122, and the sixth reaction unit 123 to carry out biochemical reactions in each reaction unit, so as to realize the AOAO process—anaerobic-aerobic process for wastewater treatment. Here, A stands for Anaerobic, which is the anaerobic section used for nitrogen and phosphorus removal; O stands for Oxic, which is the aerobic section used for removing organic matter from wastewater. During the reaction process, an anaerobic environment is formed in the first reaction unit 111 and the fourth reaction unit 121, and an aerobic environment is formed in the second reaction unit 112, the third reaction unit 113, the fifth reaction unit 122, and the sixth reaction unit 123.

[0080] like Figure 1 and Figure 2 As shown, according to one aspect of the present invention, the first reaction unit 111 and the fourth reaction unit 121 are connected by a connecting pipe 134. One end of the connecting pipe 134 is connected to the connecting component 13 connecting the first reaction unit 111 and the second reaction unit 112, and the other end of the connecting pipe 134 is connected to the connecting component 13 connecting the third reaction unit 113 and the fourth reaction unit 121.

[0081] That is, while each reaction unit in the first reaction module 11 is connected in series with each reaction unit in the second reaction module 12, the first reaction unit 111 and the fourth reaction unit 121 are connected through a connecting pipe.

[0082] Wastewater can skip the second reaction unit 112 and the third reaction unit 113 after entering the first reaction unit 111, and directly enter the fourth reaction unit 121, and then sequentially enter the fifth reaction unit 122 and the sixth reaction unit 123, in order to achieve A 2 O process method - anaerobic-anoxic-aerobic process for wastewater treatment; during the reaction process, an anaerobic environment is formed in the first reaction unit 111 and the fourth reaction unit 121, an anoxic environment is formed in the fifth reaction unit 122, and an aerobic environment is formed in the sixth reaction unit 123.

[0083] Optionally, by adjusting the connection method of each connecting component 13, the wastewater treatment system provided in this application embodiment can also realize other wastewater treatment processes, such as the MBBR process—Moving Bed Biofilm Reactor, etc.

[0084] like Figure 1 As shown, according to one aspect of the present invention, the dispensing device 2 includes a dispensing box 21, a dispensing main pipe 22 and a plurality of dispensing branch pipes 23. The dispensing box 21 contains adsorbent material. The dispensing main pipe 22 is connected to the dispensing box 21 and is equipped with a dispensing pump 221 and a flow meter A. Each dispensing branch pipe 23 is connected to the dispensing main pipe 22 and is connected to a reaction unit. Each dispensing branch pipe 23 is equipped with a valve.

[0085] The dispensing box 21 contains a liquid, such as water. After the adsorbent material is mixed evenly with the liquid, it is dispensed into different reaction units through the dispensing main pipe 22 and each dispensing branch pipe 23.

[0086] The dispensing tank 21 is equipped with a dispensing level gauge 24, which is used to detect whether there is enough adsorbent material in the dispensing tank 21.

[0087] like Figure 1 and Figure 3 As shown, according to one aspect of the present invention, the wastewater treatment system further includes a water inlet device 3, which is connected to the first reaction unit 111 and the fourth reaction unit 121; the water inlet device 3 is used to supply wastewater to each reaction unit of each reaction module.

[0088] The water inlet device 3 includes a water inlet tank 31, a water inlet pipe 32, a stirrer 33, a main water supply pipe 34, and two water supply branches 35. The water inlet tank 31 has an internal cavity. The water inlet pipe 32 is connected to the inside of the water inlet tank 31 and can supply sewage into the water inlet tank 31. The stirrer 33 is located inside the water inlet tank 31. The main water supply pipe 34 is connected to the water inlet tank 31 and is equipped with a water supply pump 341. Both water supply branches 35 are connected to the main water supply pipe 34. One water supply branch 35 is connected to the first reaction unit 111, and the other water supply branch 35 is connected to the fourth reaction unit 121. Both water supply branches 35 are equipped with valves and flow meters A. The water inlet tank 31 is equipped with a water level gauge 38.

[0089] Wastewater enters the cavity. After the inlet water level gauge 38 detects that the wastewater in the cavity has reached a certain level, it is transported to two water supply pipes 35 through the main water supply pipe 34. The valves on the two water supply pipes 35 are selectively opened according to the reaction needs. At the same time, the amount of wastewater flowing into the first reaction unit 111 and / or the second reaction unit 112 is monitored by the flow meter A on the corresponding water supply pipe 35.

[0090] Optionally, a check valve 342 is provided on the main water supply pipe 34 to prevent sewage backflow.

[0091] like Figure 1 and Figure 3 As shown, according to one aspect of the present invention, the water inlet device 3 further includes a filter 36 and a partition 37. The filter 36 is disposed inside the water inlet tank 31 and is connected to the water inlet pipe 32. The filter 36 is used to filter the sewage entering the water inlet tank 31 to remove larger impurity particles in the sewage.

[0092] Alternatively, the filter 36 may be a basket screen or other filter 36 capable of filtering larger impurity particles in the wastewater.

[0093] A partition 37 is longitudinally disposed inside the water inlet tank 31. The upper end of the partition 37 is connected to the top of the water inlet tank 31, and a water passage gap 371 is formed between the lower end of the partition 37 and the bottom of the water inlet tank 31. The partition 37 divides the cavity of the water inlet tank 31 into a communicating first cavity 311 and a second cavity 312. After the sewage flowing into the water inlet tank 31 from the water inlet pipe 32 is filtered by the filter 36, it enters the second cavity 312 through the water passage gap 371 at the bottom of the water inlet tank 31. According to the principle of communicating vessels, the liquid level of the sewage in the first cavity 311 and the second cavity 312 rises synchronously.

[0094] The inlet pipe 32 is connected to the upper part of the first cavity 311, and the main water supply pipe 34 is connected to the lower part of the second cavity 312, so as to ensure that the sewage flows in the inlet tank 31 in an upward and downward manner, and to ensure that the sewage in the inlet tank 31 circulates in the vertical direction.

[0095] The filter 36 is located in the first chamber 311 and near the top of the first chamber 311. The sewage flowing into the inlet tank 31 through the inlet pipe 32 is filtered by the filter 36 and falls from top to bottom to the bottom of the inlet tank 31. The stirrer 33 is located in the second chamber 312. By setting the stirrer 33, the sewage in the inlet tank 31 can be stirred to make the sewage quality uniform, so as to ensure that the sewage can carry out stable biochemical reactions in subsequent processes.

[0096] like Figure 1 and Figure 4 As shown, according to one aspect of the present invention, the wastewater treatment system further includes an effluent device 4, which is connected to the sixth reaction unit 123. The effluent device 4 includes an effluent tank 41, a water collection pipe 42, a water distributor 43, and an effluent pipe 44. After the wastewater undergoes biochemical treatment by the biochemical treatment device, it enters the effluent device 4 and undergoes sedimentation and separation in the effluent device 4 to further remove sludge and impurities from the wastewater and improve the water quality after wastewater treatment.

[0097] The interior of the outlet tank 41 has a cavity; the water collection pipe 42 is connected to the sixth reaction unit 123; after the wastewater completes the biochemical reaction in the biochemical reaction device 1, it enters the outlet tank 41 through the water collection pipe 42 for sedimentation and separation.

[0098] The water distributor 43 is located inside the outlet tank 41. The water distributor 43 has a water receiving end and a water distributing end. The water receiving end is connected to the water receiving pipe 42, and the water distributing end extends to the bottom of the outlet tank 41. The water distributor 43 is used to evenly guide the biochemically treated sewage to the bottom of the outlet tank 41 to improve the uniform sedimentation of sludge at various positions at the bottom of the outlet tank 41 during the subsequent sedimentation and separation process.

[0099] The outlet pipe 44 is connected to the outlet tank 41 at the top, and discharges the supernatant after sedimentation and separation from the top of the outlet tank 41.

[0100] like Figure 1 and Figure 4 As shown, according to one aspect of the present invention, the water outlet device 4 further includes a water collection weir 45, which is disposed inside the water outlet tank 41, and the water outlet pipe 44 is connected to the water collection weir 45. The water collection weir 45 is used to guide the supernatant formed after the liquid entering the water outlet tank 41 is separated by sedimentation to the water outlet pipe 44, thereby reducing the occurrence of sludge that has settled to the bottom of the water outlet tank 41 flowing out along the water outlet pipe 44 with the supernatant.

[0101] As in 1 and Figure 4 As shown, according to one aspect of the present invention, the water effluent device 4 further includes a sludge collection component 46, which is disposed inside the water effluent tank 41 and located at the bottom of the water effluent tank 41. The sludge collection component 46 can concentrate the sludge mixed in the liquid entering the water effluent tank 41 from the sixth reaction unit 123 to the central position at the bottom of the water effluent tank 41, so as to facilitate the discharge of sludge from the bottom of the water effluent tank 41 for recycling or reuse.

[0102] The sludge collection component 46 includes a plurality of inclined sludge collection plates. One side of the sludge collection plate is connected to the side wall of the outlet tank 41, and the other side of the sludge collection plate is connected to the bottom of the outlet tank 41 near its center position, so as to guide the sludge to the bottom of the outlet tank 41 near its center position.

[0103] Optionally, the water outlet device 4 also includes a water outlet level gauge 74, which detects the overall liquid level in the water outlet tank 41 and discharges the supernatant.

[0104] like Figure 1As shown, according to one aspect of the present invention, the wastewater treatment system further includes an air supply device 5, which is connected to the aerator 1112 of each reaction unit. The air supply device includes a blower 51, a main air supply pipe 52, and a plurality of branch air supply pipes 53. The main air supply pipe 52 is connected to the blower 51 and is equipped with a pressure gauge 521 and a flow meter A. Each branch air supply pipe 53 is connected to the main air supply pipe 52 and each branch air supply pipe 53 is connected to the aerator 1112 of one reaction unit. Each branch air supply pipe 53 is equipped with a valve.

[0105] By adjusting the valves on each air supply pipe 53, air can be introduced into each reaction unit to achieve aeration and increase the oxygen content of the wastewater in each reaction unit.

[0106] like Figure 1 As shown, according to one aspect of an embodiment of the present invention, the wastewater treatment system further includes a reflux device 6, which includes a first reflux main pipe 61, a second reflux main pipe 62, a third reflux main pipe 63, a first reflux branch pipe 64, and a second reflux branch pipe 65. The reflux device 6 enables wastewater from downstream reaction units to flow back to upstream reaction units, achieving wastewater recycling. Furthermore, during the reflux process, since the oxygen content of the wastewater differs among reaction units, the oxygen content can be adjusted by introducing wastewater from other reaction units into any one reaction unit.

[0107] The first return main pipe 61 is connected to the first reaction unit 111 and the third reaction unit 113 respectively. The liquid in the third reaction unit 113 can return to the first reaction unit 111 through the first return main pipe 61 to realize the sewage return inside the first reaction module 11.

[0108] The second return main pipe 62 is connected to the second reaction unit 112 and the fourth reaction unit 121 respectively. The liquid in the fourth reaction unit 121 can return to the second reaction unit 112 through the second return main pipe 62 to realize the sewage return between the first reaction module 11 and the second reaction module 12.

[0109] The third return main pipe 63 is connected to the sixth reaction unit 123; the first return branch pipe 64 is connected to the third return main pipe 63 and the fourth reaction unit 121 respectively, and the liquid in the sixth reaction unit 123 is returned to the fourth reaction unit 121 through the third return main pipe 63 and the first return branch pipe 64; the second return branch pipe 65 is connected to the third return main pipe 63 and the fifth reaction unit 122 respectively, and the liquid in the sixth reaction unit 123 is returned to the fifth reaction unit 122 through the third return main pipe 63 and the second return branch pipe 65; so as to realize the sewage return inside the second reaction module 12.

[0110] The first return main pipe 61, the second return main pipe 62, and the third return main pipe 63 are all equipped with a return pump 66 and a flow meter A to provide power for sewage return and to detect the flow rate of sewage return. The first return main pipe 61, the second return main pipe 62, the first return branch pipe 64, and the second return branch pipe 65 are all equipped with valves. During the sewage treatment process, each valve is kept open to achieve the circulation treatment of sewage.

[0111] like Figure 1 As shown, according to one aspect of an embodiment of the present invention, the wastewater treatment system further includes a sludge discharge device 7, which includes a sludge discharge pipe 71, a sludge discharge pipe 72, and a sludge return pipe 73. The sludge discharge pipe 71 is connected to the bottom of the effluent tank 41, and a discharge pump 711 is provided on the sludge discharge pipe 71 to provide power for sludge discharge. The sludge discharge pipe 72 is connected to the sludge discharge pipe 71 and is equipped with a valve. The sludge return pipe 73 is connected to both the sludge discharge pipe 71 and the first reaction unit 111, and is equipped with a valve and a flow meter A. By selectively opening the valves on the sludge discharge pipe 72 and / or the sludge return pipe 73, sludge discharge and recycling, as well as sludge return to the biochemical reaction device 1, can be achieved.

[0112] like Figure 1 As shown, according to one aspect of the present invention, the wastewater treatment system further includes a control device 8, which is electrically connected to the biochemical reaction device 1, the dosing device 2, the influent device 3, the effluent device 4, the reflux device 6, and the sludge discharge device 7, respectively. This enables the electric control of the biochemical reaction device 1, the dosing device 2, the influent device 3, the effluent device 4, the reflux device 6, and the sludge discharge device 7, achieving the advantages of easy control and saving labor costs.

[0113] The wastewater treatment system provided in this application embodiment effectively removes small molecule organic matter in wastewater by adding adsorbent materials to the reaction units of each reaction module during the biochemical reaction process, thereby effectively improving the removal effect of small molecule organic matter in wastewater and improving the quality of wastewater treatment.

[0114] The wastewater treatment system provided in this application embodiment has a simple structure, a reliable and reasonable design, and a high degree of automation, which can meet the treatment needs of different water plants for different water qualities.

[0115] The wastewater treatment system provided in this application embodiment is safe and flexible. By controlling the opening and closing and the opening degree of each component, it can achieve A 2 O, AOAO, and MBBR process operation modes are widely used.

[0116] Compared with existing technologies, the wastewater treatment system provided in this application can reduce chemical oxygen demand (COD) by 8% to 19% when used for wastewater treatment.

[0117] Example 2

[0118] like Figure 5 As shown, a wastewater treatment method according to an embodiment of the present invention is implemented using the wastewater treatment system described above; the wastewater treatment method includes:

[0119] Wastewater is introduced into the biochemical reaction device, so that the wastewater flows into at least one reaction unit of at least one set of reaction modules in the biochemical reaction device;

[0120] Adjust the oxygen content of the liquid in the reaction unit through which the wastewater is introduced;

[0121] Add adsorbent material to the reaction unit through which wastewater is introduced;

[0122] Collect or discharge the processed liquid from the reaction unit.

[0123] According to one aspect of the present invention, wastewater is introduced into a biochemical reaction apparatus, causing the wastewater to flow into at least one reaction unit of at least one set of reaction modules in the biochemical reaction apparatus, comprising:

[0124] Wastewater is introduced into at least one reaction unit;

[0125] The wastewater-introducing reaction unit is connected sequentially to multiple other reaction units, allowing the wastewater to flow sequentially into each reaction unit for biochemical reactions.

[0126] According to one aspect of the present invention, adjusting the oxygen content of the liquid in the reaction unit through which wastewater is introduced includes:

[0127] The liquid in at least one reaction unit is stirred to create an anaerobic environment inside the reaction unit; and / or

[0128] Gas is introduced into the liquid in at least one reaction unit to create an aerobic environment inside the reaction unit; and / or

[0129] Gas is introduced into the liquid in at least one reaction unit and stirred to create an oxygen-deficient environment inside the reaction unit.

[0130] According to one aspect of the present invention, an adsorbent material is added to a reaction unit through which wastewater is introduced, comprising:

[0131] An adsorbent is added to at least one of the reaction units that form an anaerobic environment, a reaction unit that forms an anoxic environment, and a reaction unit that forms an aerobic environment; the addition ratio of the adsorbent is 10 mg / L to 30 mg / L.

[0132] According to one aspect of the present invention, before introducing wastewater into the biochemical reaction apparatus, the wastewater treatment method further includes:

[0133] Filtering wastewater removes some of the impurities from it;

[0134] The wastewater is stirred to make the wastewater quality uniform.

[0135] According to one aspect of the present invention, collecting or discharging the processed liquid in the reaction unit includes:

[0136] The liquid that has completed the biochemical reaction is precipitated to separate the liquid into supernatant and sludge.

[0137] Collect or discharge the supernatant;

[0138] Part of the sludge is discharged and / or part of the sludge is returned to at least one reaction unit.

[0139] The wastewater treatment system and method provided in this application can effectively adsorb and remove small molecule organic matter in wastewater by adding adsorbent materials to the reaction units of each reaction module in the biochemical reaction process, thereby effectively improving the removal effect of small molecule organic matter in wastewater and improving the quality of wastewater treatment.

[0140] The following will use the AOAO process and A 2 Taking the O process and MBBR process as examples, the wastewater treatment methods provided in the embodiments of this application are described in detail.

[0141] AOAO process:

[0142] Wastewater flows through the inlet pipe into the first chamber via the basket grille, and then flows into the second chamber through a baffle with a water passage gap at the bottom. After the wastewater quality is adjusted by the agitator, when the wastewater level reaches the water supply pump start-up level set by the control system program, the wastewater is pumped into the biochemical reaction device. By adjusting the valves on the two inlet pipes, wastewater can be introduced into the first reaction unit and the fourth reaction unit respectively, and the amount of wastewater flowing into the first reaction unit and the fourth reaction unit can be monitored by the flow meters on the two inlet pipes.

[0143] Open the connecting components between the first and second reaction units, the second and third reaction units, the third and fourth reaction units, the fourth and fifth reaction units, and the fifth and sixth reaction units. Simultaneously open the valves on the connecting pipes to sequentially connect the first, second, third, fourth, fifth, and sixth reaction units. Also connect the first and fourth reaction units to form the AOAO biochemical system's hydraulic flow pattern. At this time, wastewater is introduced into all six reaction units for biochemical reactions. When controlling the entry and exit of wastewater into each reaction unit, it is important to ensure that for each independent reaction unit, the wastewater enters from the top and exits from the bottom to ensure vertical circulation within the unit and maintain uniform wastewater quality.

[0144] Start the agitators of the first and fourth reaction units, open the valves on the air supply pipes connected to the second, third, fifth, and sixth reaction units, and aerate the second, third, fifth, and sixth reaction units using a blower. At the same time, open the valves on the first return main pipe and the first return branch pipe in the return device to allow the wastewater in the third reaction unit to return to the first reaction unit, and the wastewater in the sixth reaction unit to return to the fourth reaction unit.

[0145] During this process, an anaerobic environment is formed in the first and fourth reaction units, while an aerobic environment is formed in the second, third, fifth, and sixth reaction units.

[0146] Adsorbent material is selectively added to the first reaction unit, second reaction unit, third reaction unit, fourth reaction unit, fifth reaction unit and sixth reaction unit by a dispensing device.

[0147] Specifically, adsorbent material can be jointly added to the first reaction unit and the fourth reaction unit; adsorbent material can be jointly added to the first reaction unit and the second reaction unit; adsorbent material can be jointly added to the first reaction unit and the fifth reaction unit; adsorbent material can be jointly added to the fourth reaction unit and the second reaction unit; adsorbent material can be jointly added to the fourth reaction unit and the fifth reaction unit; adsorbent material can be jointly added to the second reaction unit and the fifth reaction unit.

[0148] In each of the above combined delivery methods, the dosage of adsorbent material delivered each time is 10 mg / L, 20 mg / L, or 30 mg / L. During the delivery process, the valves on the corresponding delivery pipes are opened and the flow meters on the main delivery pipe are monitored to control the total delivery volume.

[0149] After undergoing biochemical reactions in the biochemical reactor, the wastewater enters the effluent device through the sixth reaction unit for sedimentation and separation. During this process, the supernatant formed by sedimentation and separation is discharged through the effluent pipe of the effluent device, and the sludge formed by sedimentation and separation is discharged through the sludge discharge device or sent back to the first reaction unit for recycling.

[0150] A 2 O process method.

[0151] Wastewater flows through the inlet pipe into the first chamber via the basket grille, and then flows into the second chamber through a baffle with a water passage gap at the bottom. After the wastewater quality is adjusted by the agitator, when the wastewater level reaches the water supply pump start-up level set by the control system program, the wastewater is pumped into the biochemical reaction device. By adjusting the valves on the two inlet pipes, wastewater can be introduced into the first reaction unit and the fourth reaction unit respectively, and the amount of wastewater flowing into the first reaction unit and the fourth reaction unit can be monitored by the flow meters on the two inlet pipes.

[0152] The connecting components between the first and second reaction units, and between the second and third reaction units, are closed. The connecting components between the fourth and fifth reaction units, and between the fifth and sixth reaction units, are opened. Simultaneously, the valve on the connecting pipe is opened, connecting the first and fourth reaction units, thereby achieving A. 2 In the O-type biochemical system, wastewater is introduced into the first, fourth, fifth, and sixth reaction units for biochemical reactions. When controlling the inflow and outflow of wastewater into each reaction unit, it is important to ensure that the wastewater enters from the top of the reaction unit and flows out from the bottom, so as to ensure that the wastewater circulates vertically inside the reaction unit and maintains uniform wastewater quality within the unit.

[0153] Start the agitators of the first and fourth reaction units, open the valves on the air supply pipes connected to the fifth and sixth reaction units, and aerate the fifth and sixth reaction units through the blower. At the same time, open the valve on the first return pipe of the return device to return the wastewater in the sixth reaction unit to the fourth reaction unit.

[0154] During this process, an anaerobic environment is formed in the first reaction unit, while an aerobic environment is formed in the fifth and sixth reaction units. Since the oxygen content of the wastewater in the sixth reaction unit is relatively high, after the wastewater in the sixth reaction unit is returned to the fourth reaction unit, the oxygen content of the wastewater in the fourth reaction unit is lower than that in the sixth reaction unit but higher than that in the first reaction unit. Therefore, an anaerobic environment is formed inside the fourth reaction unit.

[0155] Adsorbent material is selectively added to the first reaction unit, the fourth reaction unit, the fifth reaction unit, and the sixth reaction unit using a dispensing device.

[0156] Specifically, the adsorbent material can be added to the first reaction unit, the fourth reaction unit, and the fifth reaction unit individually; the adsorbent material can be added to the first reaction unit and the fourth reaction unit in combination; the adsorbent material can be added to the first reaction unit and the second reaction unit in combination; the adsorbent material can be added to the first reaction unit and the fifth reaction unit in combination; and the adsorbent material can be added to the fourth reaction unit and the fifth reaction unit in combination.

[0157] In each of the above combined delivery methods, the dosage of adsorbent material delivered each time is 10 mg / L, 20 mg / L, or 30 mg / L. During the delivery process, the valves on the corresponding delivery pipes are opened and the flow meters on the main delivery pipe are monitored to control the total delivery volume.

[0158] After undergoing biochemical reactions in the biochemical reactor, the wastewater enters the effluent device through the sixth reaction unit for sedimentation and separation. During this process, the supernatant formed by sedimentation and separation is discharged through the effluent pipe of the effluent device, and the sludge formed by sedimentation and separation is discharged through the sludge discharge device or sent back to the first reaction unit for recycling.

[0159] MBBR process.

[0160] Using polymer materials as fillers, the filler structure may optionally include a three-dimensional hollow ring structure, wherein the inner surface of each hollow ring has a ridge structure, and the outer surface of each hollow ring has multiple ridge structures. It should be noted that this application does not limit the specific structure and material of the filler.

[0161] Wastewater flows through the inlet pipe into the first chamber via the basket grille, and then flows into the second chamber through a baffle with a water passage gap at the bottom. After the wastewater quality is adjusted by the agitator, when the wastewater level reaches the water supply pump start-up level set by the control system program, the wastewater is pumped into the biochemical reaction device. By adjusting the valves on the two inlet pipes, wastewater can be introduced into the first reaction unit and the fourth reaction unit respectively, and the amount of wastewater flowing into the first reaction unit and the fourth reaction unit can be monitored by the flow meters on the two inlet pipes.

[0162] Open the connecting components between the first and second reaction units, the second and third reaction units, the third and fourth reaction units, the fourth and fifth reaction units, and the fifth and sixth reaction units, while closing the valves on the connecting pipes. This sequentially connects the first, second, third, fourth, fifth, and sixth reaction units, thus achieving the hydraulic flow state of the MBBR biological system. At this time, wastewater is introduced into all the first, second, third, fourth, fifth, and sixth reaction units for biological reactions. When controlling the entry and exit of wastewater into each reaction unit, it is important to ensure that, for each independent reaction unit, the wastewater enters from the top and exits from the bottom as much as possible, so as to ensure that the wastewater circulates vertically inside the reaction unit and maintains the uniformity of the wastewater quality within the reaction unit.

[0163] Start the agitators of the first, second, and fifth reaction units, open the valves on the air supply pipes connected to the third, fourth, and sixth reaction units, and aerate the third, fourth, and sixth reaction units using blowers. At the same time, open the valves on the second return main pipe and the second return branch pipe in the return device to allow the wastewater in the fourth reaction unit to return to the second reaction unit, and the wastewater in the sixth reaction unit to return to the fifth reaction unit.

[0164] During this process, an anaerobic environment is formed in the first reaction unit and an aerobic environment is formed in the sixth reaction unit. Because the oxygen content of the wastewater in the sixth reaction unit is relatively high, after the wastewater in the sixth reaction unit is returned to the fifth reaction unit, the oxygen content of the wastewater in the fifth reaction unit is lower than that in the sixth reaction unit but higher than that in the first reaction unit. Therefore, an anoxic environment is formed inside the fifth reaction unit. Because the oxygen content of the wastewater in the fourth reaction unit is relatively low and the oxygen content of the wastewater in the second reaction unit is relatively high, after the wastewater in the fourth reaction unit is returned to the second reaction unit, an anoxic environment is formed inside the second reaction unit.

[0165] Packing material is added to the third and fourth reaction units, and the amount of packing material added is one-third of the reaction chamber volume of the third and fourth reaction units.

[0166] The adsorbent material is selectively added to the second, third, fifth, and sixth reaction units using a dispensing device.

[0167] Specifically, adsorbent material can be added to the third and sixth reaction units individually; adsorbent material can be added to the second and fifth reaction units jointly; adsorbent material can be added to the second and sixth reaction units jointly; and adsorbent material can be added to the fifth and sixth reaction units jointly.

[0168] In each of the above combined delivery methods, the dosage of adsorbent material delivered each time is 10 mg / L, 20 mg / L, or 30 mg / L. During the delivery process, the valves on the corresponding delivery pipes are opened and the flow meters on the main delivery pipe are monitored to control the total delivery volume.

[0169] After undergoing biochemical reactions in the biochemical reactor, the wastewater enters the effluent device through the sixth reaction unit for sedimentation and separation. During this process, the supernatant formed by sedimentation and separation is discharged through the effluent pipe of the effluent device, and the sludge formed by sedimentation and separation is discharged through the sludge discharge device or sent back to the first reaction unit for recycling.

[0170] The wastewater treatment method provided in this application is safe and flexible. By controlling the opening and closing and the degree of opening of each component, A can be achieved. 2 O, AOAO, and MBBR process operation modes are widely used.

[0171] Compared with existing technologies, the wastewater treatment method provided in this application can reduce chemical oxygen demand (COD) by 8% to 19%.

[0172] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A wastewater treatment system, characterized in that, The wastewater treatment system includes: A biochemical reaction device (1) includes at least one set of reaction modules, each reaction module including multiple reaction units, and each reaction unit of each reaction module is connected to at least one other reaction unit through a connecting component (13); The dispensing device (2) is connected to each of the reaction units respectively, and the dispensing device (2) can dispense adsorbent material to each of the reaction units respectively; The reaction unit includes: a reaction chamber (1111) with an internal cavity; An aerator (1112) is disposed inside the reaction chamber (1111), and the aerator (1112) is located at the bottom of the reaction chamber (1111); A stirrer (1113) is located inside the reaction chamber (1111) and above the aerator (1112); The connecting component (13) includes a transverse connecting pipe (131), a longitudinal outlet pipe (132), and a longitudinal inlet pipe (133). The transverse connecting pipe (131) has a first end and a second end. The upper ends of the longitudinal outlet pipe (132) and the longitudinal inlet pipe (133) are both connected to the transverse connecting pipe (131). Valves are provided on the first end of the transverse connecting pipe (131), the second end of the transverse connecting pipe (131), the longitudinal inlet pipe (133), and the longitudinal outlet pipe (132). The first end of the transverse connecting pipe (131) and the longitudinal water outlet pipe (132) are located inside the reaction tank (1111). The first end of the transverse connecting pipe (131) is close to the top of the reaction tank (1111), and the lower end of the longitudinal water outlet pipe (132) extends to the bottom of the reaction tank (1111). The second end of the transverse connecting pipe (131) and the longitudinal water inlet pipe (133) are located inside another reaction tank (1111). The second end of the transverse connecting pipe (131) is close to the top of the reaction tank (1111), and the longitudinal water inlet pipe (133) extends to the bottom of the reaction tank (1111).

2. The wastewater treatment system according to claim 1, characterized in that, The reaction module is provided in two groups, namely a first reaction module (11) and a second reaction module (12); the first reaction module (11) includes a first reaction unit (111), a second reaction unit (112) and a third reaction unit (113); the second reaction module (12) includes a fourth reaction unit (121), a fifth reaction unit (122) and a sixth reaction unit (123); The first reaction unit (111) is connected to the second reaction unit (112), the second reaction unit (112) is connected to the third reaction unit (113), the third reaction unit (113) is connected to the fourth reaction unit (121), the fourth reaction unit (121) is connected to the fifth reaction unit (122), and the fifth reaction unit (122) is connected to the sixth reaction unit (123) through the connecting component (13).

3. The wastewater treatment system according to claim 2, characterized in that, The first reaction unit (111) and the fourth reaction unit (121) are connected by a connecting pipe (134). One end of the connecting pipe (134) is connected to the connecting component (13) that connects the first reaction unit (111) and the second reaction unit (112), and the other end of the connecting pipe (134) is connected to the connecting component (13) that connects the third reaction unit (113) and the fourth reaction unit (121).

4. The wastewater treatment system according to claim 1, characterized in that, The dispensing device (2) includes: Dispensing box (21), wherein the dispensing box (21) contains adsorbent material; A main discharge pipe (22) is connected to the discharge box (21), and a discharge pump (221) and a flow meter are provided on the main discharge pipe (22); Multiple dispensing pipes (23) are provided, each of which is connected to the main dispensing pipe (22) and each of which is connected to a reaction unit. Each of the dispensing pipes (23) is equipped with a valve.

5. The wastewater treatment system according to claim 2, characterized in that, The wastewater treatment system further includes an inlet device (3), which is connected to the first reaction unit (111) and the fourth reaction unit (121); the inlet device (3) includes: The water inlet tank (31) has an internal cavity; The inlet pipe (32) is connected to the interior of the inlet tank (31), and the inlet pipe (32) can supply sewage into the inlet tank (31); A stirrer (33) is located inside the water inlet tank (31); A main water supply pipe (34) is connected to the water inlet tank (31), and a water supply pump (341) is provided on the main water supply pipe (34); Two water supply pipes (35) are connected to the main water supply pipe (34). One of the water supply pipes (35) is connected to the first reaction unit (111), and the other water supply pipe (35) is connected to the fourth reaction unit (121). Both water supply pipes (35) are equipped with valves and flow meters.

6. The wastewater treatment system according to claim 5, characterized in that, The water inlet device (3) also includes: A filter (36) is disposed inside the water inlet tank (31), and the filter (36) is connected to the water inlet pipe (32); A partition (37) is longitudinally disposed inside the water inlet tank (31). The upper end of the partition (37) is connected to the top of the water inlet tank (31), and the lower end of the partition (37) forms a water passage gap (371) between it and the bottom of the water inlet tank (31). The partition (37) divides the cavity of the water inlet tank (31) into a communicating first cavity (311) and a second cavity (312). The water inlet pipe (32) is connected to the upper part of the first cavity (311), the water supply main pipe (34) is connected to the lower part of the second cavity (312), the filter (36) is located in the first cavity (311), and the stirrer is located in the second cavity (312).

7. The wastewater treatment system according to claim 2, characterized in that, The wastewater treatment system further includes an effluent device (4), which is connected to the sixth reaction unit (123). The effluent device (4) includes: The water outlet tank (41) has an internal cavity; The water collection pipe (42) is connected to the sixth reaction unit (123); A water distributor (43) is located inside the water outlet tank (41). The water distributor (43) has a water receiving end and a water distributing end. The water receiving end is connected to the water receiving pipe (42), and the water distributing end extends to the bottom of the water outlet tank (41). The water outlet pipe (44) is connected to the water outlet tank (41) at the upper part.

8. The wastewater treatment system according to claim 7, characterized in that, The water outlet device (4) also includes a water collection weir (45), which is located inside the water outlet tank (41), and the water outlet pipe (44) is connected to the water collection weir (45).

9. The wastewater treatment system according to claim 7, characterized in that, The water outlet device (4) also includes a sludge collection component (46), which is located inside the water outlet tank (41) and at the bottom of the water outlet tank (41). The sludge collection component (46) can collect the sludge mixed in the liquid entering the water outlet tank (41) from the sixth reaction unit (123) to the center of the bottom of the water outlet tank (41).

10. The wastewater treatment system according to claim 1, characterized in that, The wastewater treatment system further includes an air supply device (5), which is connected to the aerators (1112) of each of the reaction units; the air supply device (5) includes: Blower (51); The main air supply pipe (52) is connected to the blower (51), and a pressure gauge and a flow meter are provided on the main air supply pipe (52); Multiple gas supply branches (53) are connected to the main gas supply pipe (52), and each gas supply branch (53) is connected to the aerator (1112) of one of the reaction units. Each gas supply branch (53) is equipped with a valve.

11. The wastewater treatment system according to claim 2, characterized in that, The wastewater treatment system further includes a return flow device (6), which comprises: The first reflux manifold (61) is connected to the first reaction unit (111) and the third reaction unit (113) respectively, and the liquid in the third reaction unit (113) can be returned to the first reaction unit (111) through the first reflux manifold (61); The second return manifold (62) is connected to the second reaction unit (112) and the fourth reaction unit (121) respectively. The liquid in the fourth reaction unit (121) can return to the second reaction unit (112) through the second return manifold (62). The third reflux manifold (63) is connected to the sixth reaction unit (123); The first reflux branch pipe (64) is connected to the third reflux main pipe (63) and the fourth reaction unit (121) respectively. The liquid in the sixth reaction unit (123) is returned to the fourth reaction unit (121) through the first reflux branch pipe (64) from the third reflux main pipe (63). The second reflux branch pipe (65) is connected to the third reflux main pipe (63) and the fifth reaction unit (122) respectively. The liquid in the sixth reaction unit (123) is returned to the fifth reaction unit (122) through the third reflux main pipe (63) and the second reflux branch pipe (65). The first return main (61), the second return main (62) and the third return main (63) are each equipped with a return pump (66) and a flow meter; Valves are provided on the first return main pipe (61), the second return main pipe (62), the first return branch pipe (64), and the second return branch pipe (65).

12. The wastewater treatment system according to claim 7, characterized in that, The wastewater treatment system also includes a sludge discharge device (7), which comprises: The sludge discharge pipe (71) is connected to the bottom of the water outlet tank (41), and the sludge discharge pipe (71) is equipped with a discharge pump (711); A sludge discharge pipe (72) is connected to the sludge outlet pipe (71), and a valve is provided on the sludge discharge pipe (72); The sludge return pipe (73) is connected to the sludge discharge pipe (71) and the first reaction unit (111), respectively. The sludge return pipe (73) is equipped with a valve and a flow meter.

13. The wastewater treatment system according to claim 1, characterized in that, The wastewater treatment system also includes a control device (8), which is electrically connected to the biochemical reaction device (1) and the dispensing device (2).

14. A wastewater treatment method, characterized in that, The wastewater treatment method is implemented using the wastewater treatment system as described in any one of claims 1 to 13; the wastewater treatment method includes: Wastewater is introduced into the biochemical reaction device, so that the wastewater flows into at least one reaction unit of at least one set of reaction modules in the biochemical reaction device; Adjust the oxygen content of the liquid in the reaction unit through which the wastewater is introduced; An adsorbent is added to the reaction unit into which the wastewater is introduced; The processed liquid in the reaction unit is collected or discharged.

15. The wastewater treatment method according to claim 14, characterized in that, Introducing wastewater into a biochemical reaction apparatus, causing the wastewater to flow into at least one reaction unit of at least one set of reaction modules in the biochemical reaction apparatus, includes: introducing the wastewater into at least one of the reaction units; The reaction unit through which the wastewater is introduced is sequentially connected to multiple other reaction units; the wastewater flows sequentially into each of the reaction units to carry out biochemical reactions.

16. The wastewater treatment method according to claim 15, characterized in that, Adjusting the oxygen content of the liquid in the reaction unit through which the wastewater is introduced includes: The liquid in at least one of the reaction units is stirred to create an anaerobic environment inside the reaction unit; and / or Gas is introduced into the liquid in at least one of the reaction units to create an aerobic environment inside the reaction unit; and / or Gas is introduced into the liquid in at least one of the reaction units and stirred to create an oxygen-deficient environment inside the reaction unit.

17. The wastewater treatment method according to claim 16, characterized in that, Adding adsorbent material to the reaction unit through which the wastewater is introduced, including: An adsorbent is added to at least one of the reaction unit that forms an anaerobic environment, the reaction unit that forms an anoxic environment, and the reaction unit that forms an aerobic environment; the addition ratio of the adsorbent is from 10 mg / L to 30 mg / L.

18. The wastewater treatment method according to claim 14, characterized in that, Before introducing wastewater into the biochemical reaction device, the wastewater treatment method further includes: The wastewater is filtered to remove some of the impurities. The wastewater is stirred to make the wastewater quality uniform.

19. The wastewater treatment method according to claim 14, characterized in that, Collecting or discharging the processed liquid from the reaction unit includes: The liquid that has completed the biochemical reaction is precipitated to separate the liquid into supernatant and sludge. Collect or discharge the supernatant; A portion of the sludge may be discharged and / or a portion of the sludge may be returned to at least one of the reaction units.

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