High-alkalinity wastewater resource utilization treatment device

Abstract

The utility model provides a high-alkalinity wastewater resource utilization treatment device, which comprises a water inlet mechanism, a water outlet mechanism, a first pH detection unit and a first alkalinity detection unit, and the water inlet mechanism is used for inputting alkaline wastewater; the treatment mechanism is connected with the water inlet mechanism and is used for treating the alkaline wastewater input by the water inlet mechanism; the recycling mechanism is connected with the treatment mechanism and used for recycling the alkaline wastewater, and the recycling mechanism comprises an effluent recycling unit, a third pH detection unit, a third alkalinity detection unit and pipelines leading to other wastewater process units; and the water outlet mechanism comprises a water outlet unit and is used for outputting the treated wastewater.

Description

Technical Field

[0001] This utility model relates to the field of wastewater resource utilization technology, specifically to a high-alkalinity wastewater resource utilization treatment device. Background Technology

[0002] High-alkalinity wastewater mainly originates from industries such as chemical, pharmaceutical, and metallurgy. It is characterized by a high pH value and high alkalinity, containing large amounts of strongly alkaline substances such as sodium hydroxide, calcium hydroxide, sodium bicarbonate, and sodium carbonate. These substances not only have toxic effects on aquatic organisms in water bodies, but their high concentration also makes it difficult to effectively apply traditional biological and physical treatment methods. Therefore, developing a device that can efficiently treat and utilize high-alkalinity wastewater is of practical significance.

[0003] Currently, most methods for treating highly alkaline wastewater include physical, chemical, and biological methods. Physical methods typically remove suspended solids and some dissolved substances from wastewater through sedimentation and filtration. However, physical methods are inefficient and often fail to completely remove alkaline components from wastewater. Chemical methods are widely used in the treatment of highly alkaline wastewater, usually converting alkaline substances into neutral substances through neutralization reactions. However, this method has the drawback of requiring the addition of large amounts of acidic chemicals, which not only increases treatment costs but may also cause secondary pollution to the environment. In addition, although biological methods perform well in removing organic matter, the highly alkaline environment often inhibits the growth of microorganisms, thereby reducing the treatment effect.

[0004] Therefore, the urgent technical problem to be solved is how to improve the efficiency of pollutant removal while making full use of the useful alkaline substances in wastewater to achieve resource reuse. Utility Model Content

[0005] This invention was developed to solve the above-mentioned problems, and its purpose is to provide a device for the resource utilization and treatment of high-alkalinity wastewater.

[0006] This utility model provides a high-alkalinity wastewater resource utilization treatment device, characterized by the following features: an inlet mechanism, including an inlet unit, a first pH detection unit, and a first alkalinity detection unit, for inputting alkaline wastewater; a treatment mechanism connected to the inlet mechanism for treating the alkaline wastewater input by the inlet mechanism; a reuse mechanism connected to the treatment mechanism for recycling and reusing the alkaline wastewater, the reuse mechanism including an effluent reuse unit, a third pH detection unit, a third alkalinity detection unit, and pipelines leading to other wastewater process units; and an outlet mechanism, including an outlet unit, for outputting the treated wastewater.

[0007] The high-alkalinity wastewater resource utilization treatment device provided by this utility model may also have the following features: the treatment mechanism includes a regulating unit, a biological treatment unit, a temporary powdered carbon dosing unit, a sedimentation unit, an ozone catalytic oxidation unit, a sand filtration unit, and a disinfection unit connected in sequence.

[0008] The high-alkalinity wastewater resource utilization treatment device provided by this utility model may also have the following features: the regulating unit is also connected to an acidic substance dosing unit and a second pH detection unit.

[0009] The high-alkalinity wastewater resource utilization treatment device provided by this utility model may also have the following feature: wherein, the regulating unit is used to regulate the pH value of the alkaline wastewater input by the inlet mechanism.

[0010] The high-alkalinity wastewater resource utilization treatment device provided by this utility model may also have the following feature: the effluent reuse unit is connected to the sand filter unit.

[0011] The high-alkalinity wastewater resource utilization treatment device provided by this utility model may also have the following feature: wherein the third pH detection unit, the third alkalinity detection unit, and the pipelines leading to other wastewater process units are respectively connected to the effluent reuse unit.

[0012] The high-alkalinity wastewater resource utilization treatment device provided by this utility model may also have the following feature: the wastewater entering the inlet unit is wastewater with pH≥7.

[0013] Functions and effects of utility models

[0014] The high-alkalinity wastewater resource utilization treatment device according to this utility model combines multiple treatment units such as physical, chemical and biological treatments. By setting a temporary powdered carbon dosing unit between the biological treatment unit and the sedimentation unit, the wastewater treatment effect is guaranteed, the treatment efficiency of effluent COD and other pollutants is improved, and it also has the function of resisting influent impact.

[0015] In this invention, by connecting and setting a third pH detection unit and a third alkalinity detection unit to the effluent utilization unit, the utilization efficiency of alkaline substances in the effluent is improved. Since alkaline substances, such as carbonate and bicarbonate, produce hydroxide ions by hydrolysis in water, this characteristic can be fully utilized to use alkaline substances such as carbonate and bicarbonate in wastewater as alkalis to adjust the pH value of other wastewater treatment units.

[0016] In some processes, pH adjustment can significantly improve reaction efficiency. However, the external addition of sodium hydroxide or calcium hydroxide is costly and may cause secondary pollution. Therefore, using the high-alkalinity wastewater generated in the effluent reuse unit as an alkalinity regulator can not only effectively reduce the demand for chemical agents but also lower operating costs. This achieves the resource utilization of high-alkalinity wastewater, minimizes the need for waste disposal, and promotes the recycling of resources. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the high-alkalinity wastewater resource utilization treatment device in an embodiment of this utility model. Detailed Implementation

[0018] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0019] To make the technical means, creative features, objectives and effects of this utility model easy to understand, the following embodiments, in conjunction with the accompanying drawings, will specifically illustrate the high-alkalinity wastewater resource utilization and treatment device of this utility model.

[0020] Example 1

[0021] Figure 1 This is a schematic diagram of the high-alkalinity wastewater resource utilization treatment device in an embodiment of this utility model.

[0022] like Figure 1 As shown, the high alkalinity wastewater resource utilization treatment device 100 in this embodiment includes an inlet mechanism 10, a treatment mechanism 20, a reuse mechanism 30, and an outlet mechanism 40.

[0023] The water inlet mechanism 10 includes a water inlet unit 11, a first pH detection unit 13, and a first alkalinity detection unit 12, for inputting alkaline wastewater.

[0024] The treatment unit 20 is connected to the water inlet unit 10 and is used to treat the alkaline wastewater input into the water inlet unit 10.

[0025] The reuse unit 30 is connected to the treatment unit 20 and is used to recycle and reuse alkaline wastewater. The reuse unit 30 includes an effluent reuse unit 31, a third pH detection unit 32, a third alkalinity detection unit 33, and pipelines leading to other wastewater process units 34.

[0026] The water outlet mechanism 40 includes a water outlet unit 41 for discharging treated wastewater.

[0027] In summary, the units of the high-alkalinity wastewater resource utilization treatment device 100 in this embodiment are connected in sequence as follows: inlet unit 11, regulating unit 21, biological treatment unit 24, temporary powdered carbon dosing unit 25, sedimentation unit 26, ozone catalytic oxidation unit 27, sand filtration unit 28, disinfection unit 29, and effluent unit 41.

[0028] The regulating unit 21 is also connected to the acidic substance dosing unit 22 and the second pH detection unit 23, thereby regulating the pH value of the alkaline wastewater input by the water inlet mechanism 10.

[0029] The sand filter unit 28 is connected to the effluent reuse unit 31, which is also connected to the third pH detection unit 32, the third alkalinity detection unit 33, and the pipeline leading to other wastewater process units 34, thereby making full use of the alkaline substances in the effluent.

[0030] A temporary powdered carbon dosing unit 25 is set up between the biological treatment unit 24 and the sedimentation unit 26. When the effluent does not meet the discharge standards, this unit is turned on to ensure the removal of pollutants from the wastewater.

[0031] The specific steps for operating this utility model are as follows:

[0032] (1) Check water quantity and water quality

[0033] The inspection confirmed that the volume of the high-alkalinity wastewater to be treated was sufficient, and the pH value of the high-alkalinity wastewater met the influent requirement of pH ≥ 7.

[0034] (2) Inspect each processing technology and instrumentation

[0035] Before use, each unit needs to be inspected to ensure that there are no foreign objects that could cause the system to malfunction. Each instrument should be calibrated and cleaned to ensure accuracy and stability during use.

[0036] (3) Check the power supply

[0037] Ensure a stable and safe power supply to power all devices in the device.

[0038] In this embodiment, the treatment process of high-alkalinity wastewater in the high-alkalinity wastewater resource utilization treatment device 100 is as follows:

[0039] First, the high-alkalinity wastewater to be treated is loaded into the inlet unit 11, and the pH value and alkalinity of the inlet water are monitored by the first pH detection unit 13 and the first alkalinity detection unit 12.

[0040] Next, the wastewater enters the adjustment unit 21, where the pH value is controlled between 7 and 8 through the second pH detection unit 23 and the acidic substance addition unit 22.

[0041] The wastewater then sequentially enters the biological treatment unit 24, the temporary powdered carbon dosing unit 25, the sedimentation unit 26, the ozone catalytic oxidation unit 27, the sand filtration unit 28, and the disinfection unit 29.

[0042] Finally, it enters the effluent unit 41 for discharge.

[0043] Table 1

[0044]

[0045] As shown in Table 1, the influent alkalinity, pH value, influent COD, effluent COD and effluent pH value of the high alkalinity wastewater in this embodiment are shown. After being treated by the high alkalinity wastewater resource utilization treatment device 100 in this embodiment, the alkalinity of the high alkalinity wastewater is significantly reduced and the degree of water pollution is significantly reduced.

[0046] Example 2

[0047] For ease of explanation, the same symbols are used for structures identical to those in Embodiment 1, and the same descriptions are omitted in this embodiment.

[0048] In this embodiment, the treatment process of high-alkalinity wastewater in the high-alkalinity wastewater resource utilization treatment device 100 is as follows:

[0049] First, the high-alkalinity wastewater to be treated is loaded into the inlet unit 11, and the pH value and alkalinity of the inlet water are monitored by the first pH detection unit 13 and the first alkalinity detection unit 12.

[0050] Next, the wastewater enters the adjustment unit 21, where the pH value is controlled between 7 and 8 through the second pH detection and acidic substance addition unit 22.

[0051] The wastewater then sequentially enters the biological treatment unit 24, the temporary powdered carbon dosing unit 25, the sedimentation unit 26, the ozone catalytic oxidation unit 27, and the sand filtration unit 28.

[0052] The effluent from sand filtration unit 28 can be simultaneously transported to effluent reuse unit 31. Effluent reuse unit 31 is equipped with a third pH detection unit 32 and a third alkalinity detection unit 33 to monitor the pH and alkalinity of the reused wastewater. These detection methods ensure that the pH and alkalinity of the reused wastewater meet usage requirements, and then it is introduced into other wastewater process units 34 through pipelines.

[0053] Other wastewater process unit 34 may be pH adjustment unit 21, which functions to adjust the pH of wastewater from acidic to alkaline. In this embodiment, other wastewater process unit 34 is a Fenton catalytic oxidation unit. At the downstream end of the Fenton catalytic oxidation unit, sodium hydroxide or calcium hydroxide is usually used to adjust the pH. High alkalinity wastewater is usually rich in alkaline substances such as carbonate and bicarbonate, which play an important role in various industrial treatment processes.

[0054] In the Fenton catalytic oxidation process, proper pH adjustment is key to ensuring reaction efficiency, while externally added sodium hydroxide or calcium hydroxide is costly and may cause secondary pollution.

[0055] Therefore, using the high-alkalinity wastewater generated in the effluent reuse unit 31 as an alkalinity regulator can not only effectively reduce the demand for chemical agents, but also reduce operating costs.

[0056] Table 2

[0057]

[0058] Table 2 shows the influent alkalinity, influent pH value, effluent alkalinity of the high alkalinity wastewater in this embodiment, effluent pH value of the effluent reuse unit 31, effluent pH value of the effluent reuse unit 31, the final pH value after entering the Fenton catalytic oxidation unit, influent and effluent COD, and whether additional alkali needs to be added.

[0059] Therefore, this method not only fully utilizes the alkaline substances such as carbonate and bicarbonate ions contained in highly alkaline wastewater, but also reduces the amount of alkaline substances required at the downstream end of the Fenton catalytic oxidation unit, and may even eliminate the need for such addition without affecting the Fenton catalytic oxidation operation. This not only achieves the resource utilization of highly alkaline wastewater but also reduces the operating cost of the Fenton catalytic oxidation unit. Through this resource utilization method, not only is the effective recycling of highly alkaline wastewater achieved, minimizing the need for waste disposal, but it also promotes resource recycling. This approach demonstrates that wastewater is not merely a pollutant, but a potential resource that can be utilized through reasonable management and technological means.

[0060] The role and effect of the embodiments

[0061] According to the high-alkalinity wastewater resource utilization treatment device involved in this utility model, a temporary powdered carbon dosing unit is set between the biological treatment unit and the sedimentation unit to ensure the treatment effect of wastewater, improve the treatment efficiency of effluent COD and other pollutants, and at the same time have the effect of resisting influent impact.

[0062] In this invention, by setting pH and alkalinity detection components in the effluent utilization unit, the utilization efficiency of alkaline substances in the effluent is improved. Since alkaline substances, such as carbonate and bicarbonate, produce hydroxide ions by hydrolysis in water, this characteristic can be fully utilized to use alkaline substances such as carbonate and bicarbonate in wastewater as alkalis to adjust the pH value of other wastewater treatment units.

[0063] In some processes, pH adjustment can significantly improve reaction efficiency. However, the external addition of sodium hydroxide or calcium hydroxide is costly and may cause secondary pollution. Therefore, using the high-alkalinity wastewater generated in the effluent reuse unit as an alkalinity regulator can not only effectively reduce the demand for chemical agents but also lower operating costs. This achieves the resource utilization of high-alkalinity wastewater, minimizes the need for waste disposal, and promotes the recycling of resources.

[0064] This invention establishes a temporary powdered carbon dosing unit between the biological treatment unit and the sedimentation unit. When the effluent fails to meet the discharge standards, this unit is activated to ensure the removal of pollutants from the wastewater.

[0065] Utilizing highly alkaline wastewater for pH adjustment can improve the economic efficiency and sustainability of the entire wastewater treatment process, thereby bringing greater flexibility and innovation to enterprises' environmental management. As environmental protection requirements continue to rise, this resource utilization model will further enhance enterprises' competitive advantage and promote the sustainable development of the industry.

[0066] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-alkalinity wastewater resource utilization treatment device for treating and reusing wastewater, characterized in that, It comprises: a water inlet mechanism including a water inlet unit, a first pH detection unit and a first alkalinity detection unit for inputting alkaline wastewater; a treatment mechanism connected with the water inlet mechanism for treating the alkaline wastewater input by the water inlet mechanism; a recycling mechanism connected with the treatment mechanism for recycling the alkaline wastewater, the recycling mechanism including a water outlet recycling unit, a third pH detection unit, a third alkalinity detection unit and a pipeline leading to other wastewater process units; and a water outlet mechanism including a water outlet unit for outputting the treated wastewater.

2. The high-alkalinity wastewater resource utilization treatment device according to claim 1, wherein: the treatment mechanism includes a conditioning unit, a biological treatment unit, a temporary powdered carbon adding unit, a sedimentation unit, an ozone catalytic oxidation unit, a sand filtration unit and a disinfection unit connected in sequence. wherein 3. The high-alkalinity wastewater resource utilization treatment device according to claim 2, wherein: the conditioning unit is further connected with an acidic substance adding unit and a second pH detection unit. wherein 4. The high-alkalinity wastewater resource utilization treatment device according to claim 3, wherein: the conditioning unit is used for adjusting the pH value of the alkaline wastewater input by the water inlet mechanism. wherein 5. The high-alkalinity wastewater resource utilization treatment device according to claim 2, wherein: the water outlet recycling unit is connected with the sand filtration unit. wherein 6. The high-alkalinity wastewater resource utilization treatment device according to claim 1, wherein: the third pH detection unit, the third alkalinity detection unit and the pipeline leading to other wastewater process units are respectively connected with the water outlet recycling unit. wherein 7. The high-alkalinity wastewater resource utilization treatment device according to claim 1, wherein: the wastewater entering the water inlet unit is wastewater with a pH≥7. wherein ​

Images