Heavy metal treatment module and heavy metal sewage treatment method

Abstract

The invention provides a heavy metal treatment module and a heavy metal sewage treatment method. The heavy metal treatment module comprises a water collecting and dosing area, a coagulating sedimentation area, a clear water area and a controller. And the coagulating sedimentation area is connected with the water collecting and dosing area. The clear water area is connected with the coagulating sedimentation area and is provided with a first water quality monitor and an outlet valve, the first water quality monitor is used for monitoring the heavy metal content of the clear water area, and the outlet valve is used for opening and closing a water outlet of the clear water area. The controller is electrically connected with the first water quality monitor and the outlet valve, and when the first water quality monitor monitors that the heavy metal in the clear water area exceeds the standard, the controller controls the outlet valve to be closed. The problem that heavy metal sewage is discharged when filtered and adsorbed waste liquid does not reach the standard in an existing treatment device is solved.

Description

Technical Field

[0001] The present application relates to the technical field of drainage, and in particular to a heavy metal treatment module and a heavy metal wastewater treatment method. Background Art

[0002] At present, the exploitation and use of mining resources and energy are simple and crude, with low utilization efficiency and inadequate pollution control, resulting in heavy metal pollutants (such as lead (Pb), mercury (Hg), chromium (Cr), cadmium (Cd) and arsenic (As)) entering rivers, lakes and other water bodies. Agricultural irrigation water is drawn from rivers, lakes or lakes. After heavy metal pollutants migrate into farmland through irrigation, they will affect the sustainability of farmland, the growth quality of agricultural products and the physical and mental health of the human body.

[0003] Chinese patent CN207375864U discloses a treatment device for waste liquid containing heavy metals, which is provided with a filtering device and an adsorption device so that the heavy metals in the effluent meet the discharge standards. The treatment device can sample and analyze the waste liquid in the effluent storage container, and filter and adsorb the waste liquid when the heavy metal concentration exceeds the standard. If the waste liquid still does not meet the standard after filtering and adsorption, the treatment device cannot be further treated, and there is still a risk of heavy metal wastewater discharge. Therefore, the existing treatment device has the problem of heavy metal wastewater discharge when the waste liquid after filtration and adsorption does not meet the standard. Summary of the invention

[0004] The purpose of the present application is to provide a heavy metal treatment module for preventing the discharge of water with excessive heavy metal content from a clean water area, which includes a water collection and dosing area, a coagulation and sedimentation area, a clean water area and a controller. The coagulation and sedimentation area is connected to the water collection and dosing area. The clean water area is connected to the coagulation and sedimentation area, and the clean water area is provided with a first water quality monitor and an outlet valve. The first water quality monitor is used to monitor the heavy metal content in the clean water area, and the outlet valve is used to open and close the water outlet of the clean water area. The controller is electrically connected to the first water quality monitor and the outlet valve. When the first water quality monitor detects that the heavy metal content in the clean water area exceeds the standard, the controller controls the outlet valve to close.

[0005] Optionally, the heavy metal treatment module also includes a return pipe, a pump and a first electric valve. The two ends of the return pipe are respectively connected to the water collection and dosing area and the clean water area. The pump is connected to the return pipe, the controller is electrically connected to the pump, and the pump is used to transport the water in the clean water area into the water collection and dosing area through the return pipe. The first electric valve is arranged in the return pipe, the controller is electrically connected to the first electric valve, and the first electric valve is used to open and close the return pipe. When the first water quality monitor detects that the heavy metal in the clean water area exceeds the standard, the controller controls the pump and controls the first electric valve to open. When the first water quality monitor detects that the heavy metal in the clean water area meets the standard, the controller controls the pump and controls the first electric valve to close.

[0006] Optionally, the heavy metal treatment module also includes a second water quality monitor, a first transfer pipeline and a second electric valve. The second water quality monitor is arranged in the water collection and dosing area, the second water quality monitor is electrically connected to the controller, and the second water quality monitor is used to monitor the heavy metal content in the water collection and dosing area. The two ends of the first transfer pipeline are respectively connected to the water collection and dosing area and the coagulation and sedimentation area, and the first transfer pipeline is used to transport water in the water collection and dosing area to the coagulation and sedimentation area. The second electric valve is arranged in the first transfer pipeline, the second electric valve is electrically connected to the controller, and the second electric valve is used to open and close the first transfer pipeline. When the second water quality monitor detects that the heavy metal content in the water collection and dosing area exceeds the standard, the controller controls the second electric valve to open.

[0007] Optionally, the heavy metal processing module further includes a pipeline mixer, and the pipeline mixer is disposed in the first transfer pipeline.

[0008] Optionally, the heavy metal treatment module also includes a standard water area, which is connected to the clean water area, and the outlet valve is used to connect or disconnect the connection between the standard water area and the clean water area. When the first water quality monitor detects that the heavy metal content in the clean water area meets the standard, the controller controls the outlet valve to open.

[0009] Optionally, the heavy metal treatment module further includes a second transfer pipeline and a third electric valve. The two ends of the second transfer pipeline are respectively connected to the water collection and dosing area and the standard water area, and the second transfer pipeline is used to transport water in the water collection and dosing area to the standard water area. The third electric valve is arranged in the second transfer pipeline, and the third electric valve is electrically connected to the controller. The third electric valve is used to open and close the second transfer pipeline. When the second water quality monitor detects that the heavy metal in the water collection and dosing area meets the standard, the controller controls the second electric valve to close, controls the outlet valve to close, and controls the third electric valve to open.

[0010] Optionally, the heavy metal processing module also includes a dosing device, which is connected to the water collection and dosing area, and is electrically connected to the controller. When the second water quality monitor detects that the heavy metal content in the water collection and dosing area exceeds the standard, the controller controls the dosing device to release the agent.

[0011] Optionally, the heavy metal treatment module also includes a water inlet area and an automatic water quality detection device. The water inlet area, the automatic water quality detection device and the water collection and dosing area are connected in sequence, and the automatic water quality detection device is used to monitor the heavy metal content in the water inlet area.

[0012] The present application also provides a heavy metal wastewater treatment method, which uses the heavy metal treatment module and includes the following steps:

[0013] Introduce sewage into the water collection and dosing area;

[0014] Monitor heavy metal levels in the water collection and treatment area and in the clean water area;

[0015] When it is monitored that the heavy metal content in the water collection and dosing area exceeds the standard, the water flowing out of the water collection and dosing area is controlled to pass through the coagulation and sedimentation area and enter the clean water area; and

[0016] When it is monitored that the heavy metal content in the clean water area exceeds the standard, the outlet valve is controlled to be closed and the first electric valve and the pump are controlled to be opened.

[0017] Optionally, the heavy metal wastewater treatment method further includes: when it is monitored that the heavy metal content in the clean water area reaches the standard, controlling the outlet valve to open and controlling the first electric valve and the pump to close.

[0018] The beneficial effects of the present application are as follows: by setting a water collection and dosing area, a coagulation and sedimentation area, a clean water area and a controller. The coagulation and sedimentation area is connected to the water collection and dosing area. The clean water area is connected to the coagulation and sedimentation area, and the clean water area is provided with a first water quality monitor and an outlet valve. The first water quality monitor is used to monitor the heavy metal content in the clean water area, and the outlet valve is used to open and close the water outlet of the clean water area. The controller is electrically connected to the first water quality monitor and the outlet valve. When the first water quality monitor detects that the heavy metal content in the clean water area exceeds the standard, the controller controls the outlet valve to close.

[0019] By setting an outlet valve at the water outlet of the clean water area, when the first water quality monitor detects that the heavy metal content in the clean water area exceeds the standard, the controller controls the outlet valve to close, so that water with excessive heavy metal content will not flow out of the clean water area, thereby avoiding the discharge of water with excessive heavy metal content from the clean water area.

[0020] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application and implement it according to the contents of the specification, the present application is described in detail below with reference to the preferred embodiments of the present application and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a block diagram of a heavy metal processing module in the first embodiment of the present application;

[0022] Figure 2 It is a block diagram of a controller, a first electric valve, a second electric valve, a third electric valve, a dosing device, a first water quality monitor, a pump, a second water quality monitor and an outlet valve in the first embodiment of the present application;

[0023] Figure 3 This is a flow chart of a heavy metal wastewater treatment method in the second embodiment of the present application.

[0024] Wherein, the reference numerals are:

[0025] 100 water collection and dosing area

[0026] 101 Coagulation and Sedimentation Area

[0027] 1010 Mud discharge pipe

[0028] 102 Qingshui District

[0029] 1020 Water outlet

[0030] 103 Controller

[0031] 104 First Water Quality Monitor

[0032] 105 Outlet valve

[0033] 106 Return pipe

[0034] 107 Pump

[0035] 108 First Electric Valve

[0036] 109 Second water quality monitor

[0037] 110 First Transmission Pipeline

[0038] 111 Second electric valve

[0039] 112 Pipeline mixer

[0040] 113 water areas meeting the standards

[0041] 114 Second Transmission Pipeline

[0042] 115 The third electric valve

[0043] 116 Dosing equipment

[0044] 117 Dosing tube

[0045] 118 Inlet Area

[0046] 119 Automatic water quality testing equipment

[0047] 120 Third water quality monitor

[0048] S1-S5: Steps of heavy metal wastewater treatment method DETAILED DESCRIPTION

[0049] The following is an explanation of the implementation of the present application by means of specific embodiments. People familiar with the technology can easily understand other advantages and effects of the present application from the contents disclosed in this specification.

[0050] It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the drawings and in combination with the embodiments. In order to enable those skilled in the art to better understand the present application scheme, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only embodiments of a part of the present application, not all embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in the field without making creative work should fall within the scope of protection of the present application.

[0051] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0052] It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0053] First embodiment

[0054] Please also refer to Figure 1 and Figure 2 In this embodiment, a heavy metal treatment module is provided, which includes a water collection and dosing area 100, a coagulation and sedimentation area 101, a clean water area 102 and a controller 103. The coagulation and sedimentation area 101 is connected to the water collection and dosing area 100. The clean water area 102 is connected to the coagulation and sedimentation area 101, and the clean water area 102 is provided with a first water quality monitor 104 and an outlet valve 105. The first water quality monitor 104 is used to monitor the heavy metal content of the clean water area 102, and the outlet valve 105 is used to open and close the water outlet 1020 of the clean water area 102. The controller 103 is electrically connected to the first water quality monitor 104 and the outlet valve 105. When the first water quality monitor 104 detects that the heavy metal content of the clean water area 102 exceeds the standard, the controller 103 controls the outlet valve 105 to close.

[0055] Please also refer to Figure 1 and Figure 2 By setting an outlet valve 105 at the water outlet 1020 of the clean water area 102, when the first water quality monitor 104 detects that the heavy metal content in the clean water area 102 exceeds the standard, the controller 103 controls the outlet valve 105 to close, so that water with excessive heavy metal content will not flow out of the clean water area 102, thereby avoiding the discharge of water with excessive heavy metal content from the clean water area 102.

[0056] like Figure 1As shown, the water collection and dosing area 100 contains a chemical agent. When the sewage passes through the water collection and dosing area 100, it can react chemically with the chemical agent, and then pass through the coagulation and sedimentation area 101 for coagulation and sedimentation to remove heavy metals in the sewage. The coagulation and sedimentation area 101 includes a coagulation area and a sedimentation and sludge storage area. The sedimentation and sludge storage area can discharge sludge through the sludge discharge pipe 1010. The outlet valve 105 can be an electric valve. The outlet valve 105 can be connected to the water outlet 1020 by screwing or clamping. The water outlet 1020 can be located at the top of the clean water area 102 (for example, the water outlet 1020 can be located downstream of the clean water area 102). The first water quality monitor 104 can be located in the water of the clean water area 102. The first water quality monitor 104 can be fixed to the inner right side wall of the clean water area 102 by welding or screwing.

[0057] like Figure 1 As shown, water can flow from the water collection and dosing area 100 through the coagulation and sedimentation area 101 to the clean water area 102. The flow direction of water in the heavy metal treatment module is as follows: Figure 1 As shown by the hollow arrows in the figure. Heavy metals can be heavy metals with significant biological toxicity such as mercury, cadmium, lead, chromium and metalloid arsenic, or general heavy metals with certain toxicity such as zinc, copper, cobalt, nickel or tin.

[0058] Please also refer to Figure 1 and Figure 2 Optionally, the heavy metal treatment module further includes a return pipe 106, a pump 107 and a first electric valve 108. The two ends of the return pipe 106 are respectively connected to the water collection and dosing area 100 and the clean water area 102. The pump 107 is connected to the return pipe 106, and the controller 103 is electrically connected to the pump 107. The pump 107 is used to transport water in the clean water area 102 into the water collection and dosing area 100 through the return pipe 106. The first electric valve 108 is arranged in the return pipe 106, and the controller 103 is electrically connected to the first electric valve 108.

[0059] The first electric valve 108 is used to open and close the return pipe 106. When the first water quality monitor 104 detects that the heavy metal content in the clean water area 102 exceeds the standard, the controller 103 controls the pump 107 and the first electric valve 108 to open. When the first water quality monitor 104 detects that the heavy metal content in the clean water area 102 meets the standard, the controller 103 controls the pump 107 and the first electric valve 108 to close. In this way, the water with excessive heavy metals in the clean water area 102 can flow back to the water collection and dosing area 100 through the return pipe 106 to continue processing until the heavy metal content in the clean water area 102 meets the standard.

[0060] like Figure 1As shown, the pump 107 can be an electric pump. When the pump 107 is turned on, the water in the clean water area 102 can be transported to the water collection and dosing area 100 through the return pipe 106. When the first electric valve 108 is turned on, the water in the clean water area 102 can be transported to the water collection and dosing area 100 through the return pipe 106. When the first electric valve 108 is closed, the water in the clean water area 102 cannot be transported to the water collection and dosing area 100 through the return pipe 106. The return pipe 106 can be a seamless steel pipe. The two ends of the return pipe 106 can be connected to the right side wall of the water collection and dosing area 100 and the right side wall of the clean water area 102 respectively by screwing, clamping or welding. The pump 107 can be connected to the return pipe 106 by screwing or clamping. The pump 107 can be located in the water of the clean water area 102. The first electric valve 108 can be connected to the return pipe 106 by screwing.

[0061] Please also refer to Figure 1 and Figure 2 Optionally, the heavy metal treatment module also includes a second water quality monitor 109, a first transfer pipeline 110 and a second electric valve 111. The second water quality monitor 109 is arranged in the water collection and dosing area 100, the second water quality monitor 109 is electrically connected to the controller 103, and the second water quality monitor 109 is used to monitor the heavy metal content in the water collection and dosing area 100. The two ends of the first transfer pipeline 110 are respectively connected to the water collection and dosing area 100 and the coagulation and sedimentation area 101, and the first transfer pipeline 110 is used to transport water in the water collection and dosing area 100 to the coagulation and sedimentation area 101. The second electric valve 111 is arranged in the first transfer pipeline 110, the second electric valve 111 is electrically connected to the controller 103, and the second electric valve 111 is used to open and close the first transfer pipeline 110. When the second water quality monitor 109 detects that the heavy metal content in the water collection and dosing area 100 exceeds the standard, the controller 103 controls the second electric valve 111 to open.

[0062] like Figure 1 As shown, the second water quality monitor 109 can be located in the water in the water collection and dosing area 100. The second water quality monitor 109 can be fixed to the inner right side wall of the water collection and dosing area 100 by welding or screwing. The two ends of the first transfer pipeline 110 can be connected to the water collection and dosing area 100 and the coagulation and sedimentation area 101 respectively by screwing, clamping or welding. The first transfer pipeline 110 can be arranged between the water collection and dosing area 100 and the coagulation and sedimentation area 101. The second electric valve 111 can be fixed to the first transfer pipeline 110 by screwing or clamping. When the second electric valve 111 is opened, the water in the water collection and dosing area 100 can flow into the coagulation and sedimentation area 101.

[0063] like Figure 1As shown, when the second electric valve 111 is opened, the upstream irrigation water can enter the coagulation and sedimentation area 101 from the water collection and dosing area 100 through the first transfer pipeline 110. The transfer pipeline (including the first transfer pipeline 110 and the second transfer pipeline 114) can be a long-distance transportation device, which is connected by pipes, pipe connectors and valves and other components, and is used to efficiently and safely transport fluids.

[0064] like Figure 1 As shown, optionally, the heavy metal treatment module also includes a pipeline mixer 112, and the pipeline mixer 112 is arranged in the first transfer pipeline 110. With this arrangement, there is no need to set an agitator in the water collection and dosing area 100, so that the water flow and the agent can be fully mixed directly through the pipeline mixer 112, making the mixing of the water flow and the agent more convenient. The pipeline mixer 112 can be a JBQ type pipeline mixer of Dongrun Environmental Protection. The pipeline mixer 112 can be fixed to the first transfer pipeline 110 by screwing or clamping. The sewage with the added agent can be mixed in the pipeline mixer 112 and then enter the coagulation and sedimentation area 101.

[0065] Please also refer to Figure 1 and Figure 2 Optionally, the heavy metal treatment module further includes a qualified water area 113, the qualified water area 113 is connected to the clean water area 102, and the outlet valve 105 is used to connect or disconnect the qualified water area 113 and the clean water area 102. When the first water quality monitor 104 detects that the heavy metal content in the clean water area 102 meets the standard, the controller 103 controls the outlet valve 105 to open. In this way, water with qualified heavy metal content can enter the qualified water area 113 to avoid excessive heavy metal content in the qualified water area 113.

[0066] Please also refer to Figure 1 and Figure 2 Optionally, the heavy metal treatment module also includes a second transfer pipeline 114 and a third electric valve 115. The two ends of the second transfer pipeline 114 are respectively connected to the water collection and dosing area 100 and the standard water area 113. The second transfer pipeline 114 is used to transport the water in the water collection and dosing area 100 to the standard water area 113. The third electric valve 115 is arranged in the second transfer pipeline 114, and the third electric valve 115 is electrically connected to the controller 103. The third electric valve 115 is used to open and close the second transfer pipeline 114. When the second water quality monitor 109 detects that the heavy metals in the water collection and dosing area 100 meet the standards, the controller 103 controls the second electric valve 111 to close, controls the outlet valve 105 to close, and controls the third electric valve 115 to open. With such a configuration, it is possible to prevent the water flowing from the second transfer pipeline 114 to the standard water area 113 from flowing back into the clean water area 102.

[0067] like Figure 1As shown, the two ends of the second transfer pipeline 114 can be connected to the left side wall of the water collection and dosing area 100 and the left side wall of the qualified water area 113 respectively by screw connection, clamping or welding. The third electric valve 115 can be fixed to the second transfer pipeline 114 by screw connection or clamping. The first transfer pipeline 110, the second transfer pipeline 114 and the return pipeline 106 can be arranged spaced apart from each other. When the second electric valve 111 is closed, the outlet valve 105 is closed and the third electric valve 115 is opened, water can enter the qualified water area 113 through the second transfer pipeline 114, the water in the water collection and dosing area 100 cannot enter the coagulation and sedimentation area 101, and the water in the qualified water area 113 cannot flow back to the clean water area 102.

[0068] Please also refer to Figure 1 and Figure 2 Optionally, the heavy metal treatment module further includes a dosing device 116, which is connected to the water collection dosing area 100, and is electrically connected to the controller 103. When the second water quality monitor 109 detects that the heavy metal content in the water collection dosing area 100 exceeds the standard, the controller 103 controls the dosing device 116 to release the agent. With this arrangement, agents can be added when the heavy metal content in the water collection dosing area 100 exceeds the standard, thereby avoiding agent waste. The agent can be sodium sulfide.

[0069] like Figure 1 As shown, the dosing device 116 and the water collection dosing area 100 can be connected by a dosing pipe 117. The dosing pipe 117 can be a seamless steel pipe. The dosing device 116 can include a dosing pump and a module for dissolving the agent. The dosing pump can be connected to the dosing pipe 117. After the agent is dissolved in the module for dissolving the agent, it is transported to the water collection dosing area 100 through the dosing pump.

[0070] like Figure 1 As shown, optionally, the heavy metal treatment module further includes a water inlet area 118 and an automatic water quality detection device 119, the water inlet area 118, the automatic water quality detection device 119 and the water collection and dosing area 100 are connected in sequence, and the automatic water quality detection device 119 is used to monitor the heavy metal content of the water inlet area 118. In this way, before the water flows into the water collection and dosing area 100, its heavy metal content can be monitored in advance, thereby improving the monitoring reliability of the heavy metal content of the water in the water collection and dosing area 100.

[0071] like Figure 1 As shown, the automatic water quality detection device 119 can be a Handwick water quality online monitor. The automatic water quality detection device 119 can be fixed to the water inlet area 118 by screwing or welding. The width of the automatic water quality detection device 119 can be equal to the width of the water inlet area 118. A third water quality monitor 120 can be set on the automatic water quality detection device 119. The third water quality monitor 120 can be set in the water of the water inlet area 118 to monitor the heavy metal content of the water inlet area 118.

[0072] like Figure 1 As shown, irrigation water containing heavy metal pollutants can enter the heavy metal treatment module from the water inlet area 118 and be discharged from the standard water area 113, that is, the water inlet area 118 can be located upstream, and the standard water area 113 can be located downstream. The first transfer pipeline 110 and the second transfer pipeline 114 can be made of seamless steel pipes and insulation materials can be wrapped in the transfer pipelines for insulation. The water inlet area 118, the water collection and dosing area 100, the coagulation and sedimentation area 101, the clear water area 102 and the standard water area 113 can be respectively enclosed by a shell made of stainless steel. The water inlet area 118, the water collection and dosing area 100, the coagulation and sedimentation area 101, the clear water area 102 and the standard water area 113 can be connected in sequence by welding.

[0073] Please also refer to Figure 1 and Figure 2 , the controller 103 may be a PLC (Programmable Logic Controller). The controller 103 may be electrically connected to the outlet valve 105, the first electric valve 108, the second electric valve 111, the third electric valve 115, the dosing device 116, the first water quality monitor 104, the pump 107, and the second water quality monitor 109 through a cable. The first water quality monitor 104, the second water quality monitor 109, and the third water quality monitor 120 may be Hach online water quality analyzers. The outlet valve 105, the first electric valve 108, the second electric valve 111, and the third electric valve 115 may be shut-off valves, for example, the outlet valve 105, the first electric valve 108, the second electric valve 111, and the third electric valve 115 may be electric ball valves.

[0074] like Figure 1 As shown, whether the heavy metals in the clean water area 102 and the water collection and dosing area 100 exceed the standard can refer to the farmland irrigation water standard GB5084-2021. For example, according to this standard, for paddy field crops, when the total lead is ≤0.2mg / L and the total cadmium is ≤0.01mg / L, the heavy metal lead and cadmium are not exceeded. When the total lead is greater than 0.2mg / L and the total cadmium is greater than 0.01mg / L, the heavy metal lead and cadmium exceed the standard. When at least one of the various heavy metals in the clean water area 102 and the water collection and dosing area 100 exceeds the standard, it is judged that the heavy metals in the clean water area 102 exceed the standard and the heavy metals in the water collection and dosing area 100 exceed the standard.

[0075] Second embodiment

[0076] like Figure 3 As shown, in this embodiment, a heavy metal wastewater treatment method is provided, which uses the heavy metal treatment module in the first embodiment and includes the following steps:

[0077] S1: Sewage is introduced into the water collection and dosing area 100.

[0078] S2: Monitor the heavy metal content in the water collection and dosing area 100 and the clean water area 102.

[0079] S3: When it is monitored that the heavy metal content in the water collection and dosing area 100 exceeds the standard, the water flowing out of the water collection and dosing area 100 is controlled to pass through the coagulation and sedimentation area 101 and enter the clean water area 102. For example, when the second water quality monitor 109 monitors that the heavy metal content in the water collection and dosing area 100 exceeds the standard, the controller 103 controls the second electric valve 111 to open, so that the water flowing out of the water collection and dosing area 100 passes through the coagulation and sedimentation area 101 and enters the clean water area 102.

[0080] S4: When the heavy metal in the clean water area 102 is detected to be excessive, the outlet valve 105 is controlled to be closed and the first electric valve 108 and the pump 107 are controlled to be turned on. For example, when the first water quality monitor 104 detects that the heavy metal in the clean water area 102 is excessive, the controller 103 controls the outlet valve 105 to be closed and the first electric valve 108 and the pump 107 to be turned on.

[0081] By setting an outlet valve 105 at the water outlet 1020 of the clean water area 102, when the first water quality monitor 104 detects that the heavy metal content in the clean water area 102 exceeds the standard, the controller 103 controls the outlet valve 105 to close, so that the water with excessive heavy metal content will not flow out of the clean water area 102, thereby preventing the water with excessive heavy metal content from being discharged from the clean water area 102. At the same time, the water with excessive heavy metal content in the clean water area 102 can be returned to the water collection and dosing area 100 through the return pipe 106 for reprocessing to make the heavy metal content in the clean water area 102 meet the standard.

[0082] like Figure 3 As shown, optionally, the heavy metal wastewater treatment method further includes: S5: when it is monitored that the heavy metal content in the clean water area 102 reaches the standard, the outlet valve 105 is controlled to open and the first electric valve 108 is controlled to close and the pump 107 is controlled to close. In this way, when the heavy metal content in the clean water area 102 reaches the standard, the pump 107 can be stopped, so the pump 107 does not have to run all the time, thereby reducing the energy consumption of the heavy metal treatment module.

[0083] The above is a detailed introduction to the heavy metal treatment module and heavy metal wastewater treatment method provided by the embodiments of the present application. For those skilled in the art, according to the ideas of the embodiments of the present application, there will be some changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application, and all equivalent modifications or changes made according to the spirit and technical ideas of the present application should still be covered by the claims of the present application.

Claims

1. A heavy metal treatment module, characterized in that: include: water collection and dosing area; A coagulation and sedimentation zone connected to the water collection and dosing zone; A clean water zone, which is connected to the coagulation and sedimentation zone, wherein the clean water zone is provided with a first water quality monitor and an outlet valve, wherein the first water quality monitor is used to monitor the heavy metal content in the clean water zone, and the outlet valve is used to open and close the water outlet of the clean water zone; as well as The controller is electrically connected to the first water quality monitor and the outlet valve. When the first water quality monitor detects that the heavy metal content in the clean water area exceeds the standard, the controller controls the outlet valve to close.

2. The heavy metal treatment module according to claim 1, characterized in that: Also includes: A reflux pipeline, the two ends of which are respectively connected to the water collection and dosing area and the clean water area; A pump connected to the return pipe, the controller is electrically connected to the pump, and the pump is used to transport water in the clean water area through the return pipe into the water collection and dosing area; as well as A first electric valve is arranged in the return pipe, and the controller is electrically connected to the first electric valve. The first electric valve is used to open and close the return pipe. When the first water quality monitor detects that the heavy metal content in the clean water area exceeds the standard, the controller controls the pump and controls the first electric valve to open. When the first water quality monitor detects that the heavy metal content in the clean water area meets the standard, the controller controls the pump and controls the first electric valve to close.

3. The heavy metal treatment module according to claim 2, characterized in that: Also includes: A second water quality monitor is disposed in the water collection and dosing area, the second water quality monitor is electrically connected to the controller, and the second water quality monitor is used to monitor the heavy metal content in the water collection and dosing area; A first transfer pipeline, both ends of which are connected to the water collection and dosing area and the coagulation and sedimentation area, respectively, and the first transfer pipeline is used to transport water in the water collection and dosing area to the coagulation and sedimentation area; as well as The second electric valve is arranged in the first transfer pipeline. The second electric valve is electrically connected to the controller. The second electric valve is used to open and close the first transfer pipeline. When the second water quality monitor detects that the heavy metal content in the water collection and dosing area exceeds the standard, the controller controls the second electric valve to open.

4. The heavy metal processing module according to claim 3, characterized in that: It also includes a pipeline mixer, which is arranged in the first transfer pipeline.

5. The heavy metal treatment module according to claim 3, characterized in that: It also includes a water area that meets the standards, which is connected to the clean water area. The outlet valve is used to connect or disconnect the connection between the water area that meets the standards and the clean water area. When the first water quality monitor detects that the heavy metal content in the clean water area meets the standards, the controller controls the outlet valve to open.

6. The heavy metal treatment module according to claim 5, characterized in that: Also includes: A second transfer pipeline, both ends of which are connected to the water collection and dosing area and the standard water area respectively, and the second transfer pipeline is used to transport water in the water collection and dosing area to the standard water area; as well as The third electric valve is arranged in the second transfer pipeline. The third electric valve is electrically connected to the controller and is used to open and close the second transfer pipeline. When the second water quality monitor detects that the heavy metal content in the water collection and dosing area meets the standard, the controller controls the second electric valve to close, controls the outlet valve to close, and controls the third electric valve to open.

7. The heavy metal treatment module according to claim 3, characterized in that: It also includes a dosing device, which is connected to the water collection and dosing area, and is electrically connected to the controller. When the second water quality monitor detects that the heavy metal content in the water collection and dosing area exceeds the standard, the controller controls the dosing device to release the agent.

8. The heavy metal treatment module according to claim 2, characterized in that: It also includes a water inlet area and an automatic water quality detection device. The water inlet area, the automatic water quality detection device and the water collection and dosing area are connected in sequence. The automatic water quality detection device is used to monitor the heavy metal content in the water inlet area.

9. A method for treating heavy metal wastewater, using the heavy metal treatment module according to any one of claims 2 to 8, characterized in that: The following steps are involved: Introduce sewage into the water collection and dosing area; Monitor heavy metal levels in the water collection and treatment area and in the clean water area; When it is monitored that the heavy metal content in the water collection and dosing area exceeds the standard, the water flowing out of the water collection and dosing area is controlled to pass through the coagulation and sedimentation area and enter the clean water area; as well as When it is monitored that the heavy metal content in the clean water area exceeds the standard, the outlet valve is controlled to be closed and the first electric valve and the pump are controlled to be opened.

10. The heavy metal wastewater treatment method according to claim 9, characterized in that: Also includes: When it is monitored that the heavy metal content in the clean water area reaches the standard, the outlet valve is controlled to open and the first electric valve and the pump are controlled to close.

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