Quartz sand purification wastewater secondary utilization treatment system

Abstract

The invention discloses a quartz sand purification wastewater secondary utilization treatment system, which belongs to the technical field of wastewater treatment, and comprises a central control module for acquiring real-time monitoring data and issuing a control instruction; the wastewater acquisition module is used for acquiring quartz sand purification wastewater; the wastewater pretreatment module is used for removing solid impurities in the quartz sand purification wastewater; the wastewater pH adjusting module is used for enabling the pH value of the quartz sand purification wastewater to be within a preset pH value range; the coagulating sedimentation and filtration module is used for removing suspended matters in the quartz sand purification wastewater after the pH value is adjusted; the heavy metal ion removal module is used for removing heavy metal ions in the quartz sand purification wastewater after coagulating sedimentation and filtration; the biological treatment and deep purification module is used for obtaining quartz sand purification wastewater after the organic matters are degraded; and the recovery and circulation module is used for recovering metal salt and wastewater. The problems of insufficient automatic control, poor comprehensive purification effect and low resource recycling rate in the quartz sand purification wastewater secondary utilization treatment process in the prior art are solved.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, and in particular to a secondary utilization treatment system for quartz sand purified wastewater. Background Art

[0002] During the purification process of quartz sand, wastewater containing a variety of pollutants such as large solid impurities, suspended sand particles, heavy metal ions and organic matter will be produced. Although traditional wastewater treatment methods, such as sedimentation, filtration and chemical treatment, can remove some pollutants to a certain extent, their treatment effects are limited. More importantly, these traditional methods generally lack intelligent and automated control mechanisms, which not only limits the improvement of treatment efficiency, but also leads to a relatively low resource recovery rate in wastewater.

[0003] At present, the secondary utilization treatment system of quartz sand purification wastewater faces many challenges. These systems can usually only treat some pollutants in the wastewater, and it is difficult to achieve comprehensive purification of the wastewater. At the same time, due to the lack of intelligence and automation, the system cannot monitor and control the key parameters in the treatment process in real time, which directly leads to the instability of the treatment effect. In addition, the existing wastewater treatment systems often fail to fully recycle the valuable resources in the wastewater, resulting in a huge waste of resources. Therefore, there is an urgent need to develop a new type of quartz sand purification wastewater secondary utilization treatment system that can overcome these defects and achieve comprehensive wastewater purification, efficient resource recovery and intelligent automation control. Summary of the invention

[0004] The technical problem solved by the invention is that in the prior art, there are problems of insufficient automation control, poor overall purification effect and low resource recovery rate in the secondary utilization treatment process of quartz sand purification wastewater.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] The present invention provides a quartz sand purified wastewater secondary utilization treatment system, comprising:

[0007] Central control module, used to integrate intelligent sensor network to obtain real-time monitoring data and issue control instructions based on real-time monitoring data;

[0008] The wastewater acquisition module is connected to the central control module and the wastewater pretreatment module by signal, and is used to obtain the quartz sand purified wastewater according to the control instruction of the central control module, input the quartz sand purified wastewater pretreatment module, and transmit the real-time monitoring data of the wastewater acquisition module to the central control module;

[0009] The wastewater pretreatment module is connected to the central control module and the wastewater pH adjustment module by signal, and is used to remove large solid impurities and suspended sand particles in the quartz sand purified wastewater according to the control instructions of the central control module, obtain pretreated quartz sand purified wastewater, and transmit the real-time monitoring data of the wastewater pretreatment module to the central control module;

[0010] The wastewater pH adjustment module is connected to the central control module and the coagulation sedimentation and filtration module by signal, and is used to make the pH value of the pre-treated quartz sand purified wastewater within a preset pH value range according to the control instruction of the central control module, obtain the quartz sand purified wastewater after adjusting the pH value, and transmit the real-time monitoring data of the wastewater pH adjustment module to the central control module;

[0011] The coagulation sedimentation and filtration module is connected to the central control module and the coagulation sedimentation and heavy metal ion removal module by signal, and is used to remove the suspended matter in the quartz sand purified wastewater after adjusting the pH value according to the control instruction of the central control module, obtain the quartz sand purified wastewater after coagulation sedimentation and filtration, and transmit the real-time monitoring data of the coagulation sedimentation and filtration module to the central control module;

[0012] The heavy metal ion removal module is connected to the central control module and the coagulation sedimentation and biological treatment and deep purification module by signal, and is used to remove the heavy metal ions in the quartz sand purified wastewater after coagulation sedimentation and filtration according to the control instruction of the central control module, obtain the quartz sand purified wastewater with the heavy metal ions removed, and transmit the real-time monitoring data of the heavy metal ion removal module to the central control module;

[0013] The biological treatment and deep purification module is connected to the central control module and the coagulation sedimentation and recovery and circulation module by signal, and is used to degrade the organic matter in the quartz sand purified wastewater from which heavy metal ions are removed according to the control instruction of the central control module, obtain the quartz sand purified wastewater after the organic matter is degraded, and transmit the real-time monitoring data of the biological treatment and deep purification module to the central control module;

[0014] The recovery and circulation module is connected to the central control module by signal, and is used to recover valuable metal salts and wastewater that meets production water standards according to the control instructions of the central control module, and transmit the real-time monitoring data of the recovery and circulation module to the central control module.

[0015] Furthermore, the real-time monitoring data include the inlet flow rate and suspended solids concentration of the wastewater pretreatment module, the pH value of the wastewater pH adjustment module, the coagulant dosage, sedimentation time and turbidity before and after filtration of the coagulation sedimentation and filtration module, the heavy metal ion concentration and precipitation efficiency of the heavy metal ion removal module, the dissolved oxygen concentration, organic matter removal rate and microbial activity of the biological treatment and deep purification module, and the recovery efficiency and effluent water quality of the recovery and circulation module.

[0016] Further, according to the control instruction of the central control module, large solid impurities and suspended sand particles in the quartz sand purification wastewater are removed to obtain pretreated quartz sand purification wastewater, including:

[0017] According to the control instructions received from the central control module, the large solid impurities in the quartz sand purified wastewater are removed by using the automatic identification and removal functions of the high-efficiency grid, so as to obtain the quartz sand purified wastewater after the large solid impurities are removed;

[0018] Using cyclone separation technology, the suspended sand particles in the quartz sand purified wastewater after the large solid impurities are removed in the grit chamber are separated to obtain the pretreated quartz sand purified wastewater;

[0019] And transmit the real-time monitoring data of the wastewater pretreatment module to the central control module.

[0020] Further, according to the control instruction of the central control module, the pH value of the pretreated quartz sand purified wastewater is within a preset pH value range to obtain the quartz sand purified wastewater after adjusting the pH value, including:

[0021] According to the control instructions received from the central control module, the pH value of the pretreated quartz sand purified wastewater is monitored, and according to the control instructions of the central control module, an acid-base regulator is automatically added to the pH adjustment tank to make the pH value of the pretreated quartz sand purified wastewater within a preset pH value range, thereby obtaining quartz sand purified wastewater after adjusting the pH value;

[0022] And transmit the real-time monitoring data of the wastewater pH adjustment module to the central control module.

[0023] Further, according to the control instruction of the central control module, the suspended matter in the quartz sand purified wastewater after adjusting the pH value is removed to obtain the quartz sand purified wastewater after coagulation, precipitation and filtration, including:

[0024] According to the control instructions received from the central control module, a bio-based coagulant is added to the coagulation tank to condense the tiny particles, organic matter and colloidal substances in the quartz sand purified wastewater after adjusting the pH value into larger flocs, and then filtered through four-stage filtration bodies of sand filtration, activated carbon filtration, precision filter and ceramic membrane filtration in turn to obtain coagulated, precipitated and filtered quartz sand purified wastewater;

[0025] And transmit the real-time monitoring data of the coagulation sedimentation and filtration modules to the central control module.

[0026] Further, according to the control instruction of the central control module, the heavy metal ions in the quartz sand purified wastewater after coagulation, precipitation and filtration are removed to obtain the quartz sand purified wastewater with the heavy metal ions removed, including:

[0027] According to the control instruction received from the central control module, a chemical precipitation method is used to form insoluble precipitates with heavy metal ions in the quartz sand purified wastewater after coagulation precipitation and filtration and remove them, and then magnetic nanoparticles and ion exchange resins are added to obtain quartz sand purified wastewater with heavy metal ions removed;

[0028] And transmit the real-time monitoring data of the heavy metal ion removal module to the central control module.

[0029] Further, according to the control instruction of the central control module, the organic matter in the quartz sand purified wastewater from which heavy metal ions are removed is degraded to obtain the quartz sand purified wastewater after the organic matter is degraded, including:

[0030] According to the control instruction received from the central control module, the quartz sand purified wastewater with heavy metal ions removed is passed through an oxygen bioreactor, an anaerobic bioreactor and a membrane bioreactor connected in series, and then ozone oxidation and ultraviolet radiation technology are used to obtain quartz sand purified wastewater with organic matter degraded;

[0031] And transmit the real-time monitoring data of the biological treatment and deep purification modules to the central control module.

[0032] Furthermore, according to the control instructions of the central control module, valuable metal salts and wastewater that meets the production water standards are recovered, including:

[0033] According to the control instructions received from the central control module, the valuable metal salts are recovered from the quartz sand purification wastewater after the degradation of organic matter by using electrodialysis or ion exchange technology, and the quartz sand purification wastewater after the degradation of organic matter is made to meet the production water standard through reverse osmosis technology, and is directly reused in the quartz sand purification production line or other water use links;

[0034] And transmit the real-time monitoring data of the recovery and circulation modules to the central control module.

[0035] Furthermore, the central control module also includes a fault diagnosis and early warning module for real-time monitoring of the operating status data of each module, and issuing an alarm when the operating status data of each module exceeds a preset normal operating status threshold.

[0036] Furthermore, it also includes a wastewater treatment module, which is used to store and transport the wastewater obtained by the recovery and circulation module to the wastewater storage tank and the wastewater transportation pipeline according to the control instructions of the central control module, and transmit the real-time monitoring data of the wastewater treatment module to the central control module.

[0037] Beneficial effects of the present invention:

[0038] 1. The central control module of the present invention can obtain real-time monitoring data of each processing module in real time, including wastewater flow, suspended solids concentration, pH value, heavy metal ion concentration, etc., by integrating an intelligent sensor network, thereby realizing real-time monitoring of the wastewater treatment process. At the same time, the central control module can intelligently issue control instructions based on these real-time monitoring data to adjust the operating parameters of each processing module, thereby optimizing the wastewater treatment effect.

[0039] 2. The present invention utilizes the automatic identification and removal functions of the high-efficiency grid and the cyclone separation technology to efficiently remove large solid impurities and suspended sand particles in the quartz sand purification wastewater, thereby improving the effect of wastewater pretreatment. The present invention can also accurately adjust the pH value of the wastewater by automatically adding an acid-base regulator.

[0040] At the same time, the present invention adopts a bio-based coagulant in the coagulation and sedimentation stage, which can more effectively remove tiny particles, organic matter and colloidal substances in the wastewater and improve the coagulation and sedimentation effect.

[0041] 3. The present invention can efficiently remove heavy metal ions in wastewater based on various technical means such as chemical precipitation method, magnetic nanoparticles and ion exchange resin, thereby improving the water quality of the treated wastewater. It can also more effectively degrade organic matter in wastewater through the series-connected oxygen bioreactor, anaerobic bioreactor and membrane bioreactor. The combined use of ozone oxidation and ultraviolet radiation technology further improves the removal efficiency of organic matter, ensuring that the water quality of the treated wastewater meets the standards.

[0042] 4. The present invention uses electrodialysis or ion exchange technology to recover valuable metal salts from quartz sand purification wastewater after organic matter degradation, thereby realizing effective utilization of resources. The present invention also uses reverse osmosis technology to make the treated wastewater meet production water standards and directly reuse it in the quartz sand purification production line or other water-using links, thereby realizing the recycling of wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A schematic diagram of the structure of a secondary utilization treatment system for quartz sand purification wastewater provided by an embodiment of the present invention;

[0044] Figure 2 A schematic diagram of the basic processing flow for secondary utilization of quartz sand purified wastewater provided in one embodiment of the present invention. DETAILED DESCRIPTION

[0045] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings. It is obvious that the described embodiments are only part of the embodiments of the present invention, but not all of the embodiments.

[0046] Example 1

[0047] like Figure 1 As shown, the present invention introduces a secondary utilization treatment system for quartz sand purification wastewater, comprising:

[0048] The central control module is used to integrate the intelligent sensor network to obtain real-time monitoring data and issue control instructions based on the real-time monitoring data.

[0049] The present invention integrates an intelligent sensor network through a central control module, which can monitor various parameters in the wastewater treatment process such as flow, pH value, turbidity, heavy metal concentration, etc. in real time. Based on these real-time monitoring data, the central control module will analyze and issue corresponding control instructions to each processing module. The automatic control of the entire wastewater treatment system is realized, ensuring that each treatment step can be carried out according to the preset parameters and conditions, thereby improving the treatment efficiency and stability, reducing manual intervention, and reducing operating costs.

[0050] In some embodiments, the central control module also includes a fault diagnosis and early warning module for real-time monitoring of the operating status data of each module, and issuing an alarm when the operating status data of each module exceeds a preset normal operating status threshold.

[0051] The wastewater acquisition module is connected to the central control module and the wastewater pretreatment module by signal, and is used to obtain quartz sand purified wastewater according to the control instructions of the central control module, input the quartz sand purified wastewater pretreatment module, and transmit the real-time monitoring data of the wastewater acquisition module to the central control module.

[0052] The present invention obtains wastewater from the quartz sand purification process through the wastewater acquisition module according to the control instructions of the central control module, and inputs it into the wastewater pretreatment module, ensuring that the wastewater can be timely and accurately acquired and transported to the next treatment module, thereby improving the continuity and efficiency of wastewater treatment and avoiding waste and pollution of wastewater during the treatment process.

[0053] The wastewater pretreatment module is connected to the central control module and the wastewater pH adjustment module by signal, and is used to remove large solid impurities and suspended sand particles in the quartz sand purified wastewater according to the control instructions of the central control module, obtain pretreated quartz sand purified wastewater, and transmit the real-time monitoring data of the wastewater pretreatment module to the central control module.

[0054] The present invention uses a wastewater pretreatment module to remove large solid impurities and suspended sand particles in the wastewater through physical methods such as grids and screens, thereby providing relatively clean wastewater, reducing the wear and blockage of subsequent treatment equipment, reducing the maintenance cost of subsequent treatment equipment, and improving the efficiency and quality of wastewater treatment.

[0055] The wastewater pH adjustment module is connected to the central control module and the coagulation sedimentation and filtration module by signal, and is used to make the pH value of the pre-treated quartz sand purified wastewater within a preset pH range according to the control instructions of the central control module, obtain the quartz sand purified wastewater with adjusted pH value, and transmit the real-time monitoring data of the wastewater pH adjustment module to the central control module.

[0056] The present invention uses a wastewater pH adjustment module to add an acid-base regulator so that the pH value of the pretreated wastewater reaches a preset range, provides a suitable pH environment for subsequent coagulation, sedimentation and filtration steps, improves the treatment efficiency of the coagulation, sedimentation and filtration steps, and ensures the stability of the wastewater in subsequent treatment steps.

[0057] The coagulation sedimentation and filtration module is signal-connected to the central control module and the coagulation sedimentation and heavy metal ion removal module, and is used to remove suspended matter in the quartz sand purified wastewater after pH adjustment according to the control instructions of the central control module, obtain the quartz sand purified wastewater after coagulation sedimentation and filtration, and transmit the real-time monitoring data of the coagulation sedimentation and filtration module to the central control module.

[0058] The present invention uses a coagulation sedimentation and filtration module to add a coagulant to form flocs and precipitate suspended matter in the wastewater, and then further removes the suspended matter in the wastewater through a filtration device, thereby improving the clarity and transparency of the wastewater and reducing the turbidity and suspended matter content of the wastewater, providing relatively clear wastewater for the subsequent heavy metal ion removal step.

[0059] The heavy metal ion removal module is signal-connected to the central control module and the coagulation sedimentation and biological treatment and deep purification module. It is used to remove heavy metal ions in the quartz sand purified wastewater after coagulation sedimentation and filtration according to the control instructions of the central control module, obtain quartz sand purified wastewater with heavy metal ions removed, and transmit real-time monitoring data of the heavy metal ion removal module to the central control module.

[0060] The present invention uses a heavy metal ion removal module to remove heavy metal ions in wastewater through chemical precipitation, adsorption or ion exchange, etc., to ensure that the wastewater meets environmental protection standards after removing the heavy metal ions, avoid pollution to the environment, reduce the heavy metal ion content in the wastewater, and improve the environmental protection and sustainability of wastewater treatment.

[0061] The biological treatment and deep purification module is connected to the central control module and the coagulation sedimentation and recovery and circulation module by signal, and is used to degrade the organic matter in the quartz sand purified wastewater from which heavy metal ions are removed according to the control instructions of the central control module, obtain the quartz sand purified wastewater after the organic matter is degraded, and transmit the real-time monitoring data of the biological treatment and deep purification module to the central control module.

[0062] The present invention utilizes the degradation effect of microorganisms through the biological treatment and deep purification module to degrade organic matter in the wastewater into harmless substances, removes organic matter in the wastewater, further improves the treatment quality of the wastewater, reduces the organic matter content in the wastewater, and improves the biological safety and environmental friendliness of the wastewater treatment.

[0063] The recovery and circulation module is connected to the central control module by signal, and is used to recover valuable metal salts and wastewater that meets production water standards according to the control instructions of the central control module, and transmit the real-time monitoring data of the recovery and circulation module to the central control module.

[0064] The present invention recovers valuable metal salts in wastewater through a recovery and circulation module, and makes the treated wastewater meet the production water standard, realizes recycling, realizes effective recovery and recycling of resources, reduces production costs, improves economic benefits, improves resource utilization and recovery rates, and reduces production costs and environmental burdens.

[0065] The present invention realizes real-time monitoring and automatic control through a central control module and an intelligent sensor network, thereby improving processing efficiency and accuracy. The modules of the present invention are connected through signals, thereby realizing modularization and scalability of the system. This facilitates maintenance and upgrading of the system, and also improves the flexibility and adaptability of the system.

[0066] In some embodiments, the present invention also includes a wastewater treatment module, which is used to store and transport the wastewater obtained by the recovery and circulation module to the wastewater storage tank and the wastewater transportation pipeline according to the control instructions of the central control module and transmit the real-time monitoring data of the wastewater treatment module to the central control module.

[0067] In summary, the present invention covers all aspects of wastewater treatment, including pretreatment, pH adjustment, coagulation sedimentation and filtration, heavy metal ion removal, biological treatment and deep purification, and resource recovery and recycling, etc. This ensures the comprehensiveness and high efficiency of wastewater treatment.

[0068] The present invention not only achieves effective wastewater treatment, but also reduces production costs and improves economic benefits through resource recovery and recycling. At the same time, the system also meets environmental protection standards and helps protect the environment and human health. The present invention provides a new, efficient and environmentally friendly solution for the field of wastewater treatment.

[0069] Example 2

[0070] like Figure 2 As shown, the invention concept is the same as that of Example 1. The present invention introduces a basic process of treating quartz sand purified wastewater by a secondary utilization treatment system, including:

[0071] Step 1: Use the central control module to obtain real-time monitoring data in real time and issue control instructions based on the real-time monitoring data.

[0072] The real-time monitoring data include the inlet flow rate and suspended solids concentration of the wastewater acquisition module, the inlet flow rate and suspended solids concentration of the wastewater pretreatment module, the pH value of the wastewater pH adjustment module, the coagulant dosage, sedimentation time and turbidity before and after filtration of the coagulation sedimentation and filtration module, the heavy metal ion concentration and precipitation efficiency of the heavy metal ion removal module, the dissolved oxygen concentration, organic matter removal rate and microbial activity of the biological treatment and deep purification module, and the recovery efficiency and effluent water quality of the recovery and circulation module.

[0073] The control instructions include wastewater acquisition module control instructions, wastewater pretreatment module control instructions, wastewater pH adjustment module control instructions, coagulation sedimentation and filtration module control instructions, heavy metal ion removal module control instructions, biological treatment and deep purification module control instructions and recovery and circulation module control instructions.

[0074] Step 2: Obtain quartz sand purified wastewater according to the control instructions of the central control module.

[0075] The wastewater acquisition module control instructions include:

[0076] Start / stop wastewater pump control instruction: according to the real-time flow data of the wastewater acquisition module, control the start or stop of the wastewater pump to adjust the wastewater flow entering the pretreatment module.

[0077] This embodiment obtains quartz sand purified wastewater according to the received wastewater acquisition module control instruction, and transmits the real-time monitoring data of the water inlet flow rate and suspended matter concentration in the wastewater acquisition module to the central control module.

[0078] Step 3: According to the control instructions of the central control module, large solid impurities and suspended sand particles in the quartz sand purification wastewater are removed to obtain pretreated quartz sand purification wastewater.

[0079] The wastewater pretreatment module control instructions include:

[0080] Adjust the grid / screen operating parameter control instructions: According to the size and concentration of solid impurities in the wastewater, adjust the gap and operating speed of the grid or screen to effectively remove large particles of solid impurities.

[0081] This embodiment uses the automatic identification and removal function of the high-efficiency grid according to the received wastewater pretreatment module control instruction to remove large solid impurities in the quartz sand purified wastewater, thereby obtaining quartz sand purified wastewater after the large solid impurities are removed;

[0082] Using cyclone separation technology, the suspended sand particles in the quartz sand purified wastewater after the large solid impurities are removed in the grit chamber are separated to obtain the pretreated quartz sand purified wastewater;

[0083] The real-time monitoring data of the inlet flow and suspended solids concentration in the wastewater pretreatment module are transmitted to the central control module.

[0084] Step 4: According to the control instruction of the central control module, the pH value of the pretreated quartz sand purified wastewater is within a preset pH value range to obtain quartz sand purified wastewater with adjusted pH value.

[0085] The wastewater pH adjustment module control instructions include:

[0086] Add acid-base regulator: Based on the real-time monitoring data of wastewater pH value, decide whether to add acid or alkali to adjust the pH value to the preset range, and control the amount of addition.

[0087] Agitator operation control: After adding the acid-base regulator, control the operating time and speed of the agitator to ensure that the acid and base substances in the wastewater are fully mixed.

[0088] This embodiment monitors the pH value of the pretreated quartz sand purified wastewater according to the received wastewater pH adjustment module control instruction, and automatically adds an acid-base regulator to the pH adjustment tank according to the control instruction of the central control module, so that the pH value of the pretreated quartz sand purified wastewater is within a preset pH value range, and obtains quartz sand purified wastewater after adjusting the pH value;

[0089] The real-time monitoring data of the pH value of the wastewater purified by quartz sand in the wastewater pH adjustment module is transmitted to the central control module.

[0090] Step 5: According to the control instruction of the central control module, the suspended matter in the quartz sand purified wastewater after adjusting the pH value is removed to obtain the quartz sand purified wastewater after coagulation, precipitation and filtration.

[0091] The coagulation sedimentation and filtration module control instructions include:

[0092] Coagulant dosage control: Determine the type and dosage of coagulant based on the concentration and properties of suspended solids in the wastewater.

[0093] Sedimentation tank sludge discharge control: According to the accumulation of sludge in the sedimentation tank, the opening and closing of the sludge discharge valve is controlled regularly or as needed to discharge the sludge.

[0094] Filter backwash control: Determine when to perform backwash operation and control the intensity and duration of backwash according to the filter's operating pressure and effluent quality.

[0095] In this embodiment, according to the received coagulation sedimentation and filtration module control instructions, a bio-based coagulant is added to the coagulation tank to condense the tiny particles, organic matter and colloidal substances in the quartz sand purified wastewater after adjusting the pH value into larger flocs, and then filtered through four-stage filtration bodies of sand filtration, activated carbon filtration, precision filter and ceramic membrane filtration in sequence to obtain quartz sand purified wastewater after coagulation sedimentation and filtration;

[0096] The coagulant dosage, sedimentation time and real-time monitoring data of turbidity before and after filtration in the coagulation sedimentation and filtration module are transmitted to the central control module.

[0097] Step 6: According to the control instruction of the central control module, the heavy metal ions in the quartz sand purified wastewater after coagulation, precipitation and filtration are removed to obtain the quartz sand purified wastewater with the heavy metal ions removed.

[0098] The heavy metal ion removal module control instructions include:

[0099] Chemical dosing control: According to the concentration of heavy metal ions in the wastewater, decide whether it is necessary to add specific chemical agents to precipitate or adsorb heavy metal ions, and control the dosage of the agents.

[0100] Reaction time control: Control the residence time of wastewater in the heavy metal ion removal module to ensure that the chemical reaction proceeds fully.

[0101] In this embodiment, according to the control instruction of the heavy metal ion removal module received, a chemical precipitation method is used to form insoluble precipitates with heavy metal ions in the quartz sand purified wastewater after coagulation precipitation and filtration and remove them, and then magnetic nanoparticles and ion exchange resin are added to obtain quartz sand purified wastewater with heavy metal ions removed;

[0102] The real-time monitoring data of heavy metal ion concentration and precipitation efficiency of the heavy metal ion removal module are transmitted to the central control module.

[0103] Step 7: According to the control instruction of the central control module, the organic matter in the quartz sand purified wastewater from which the heavy metal ions have been removed is degraded to obtain the quartz sand purified wastewater after the organic matter has been degraded.

[0104] The biological treatment and deep purification module control instructions include:

[0105] Aeration volume control: According to the dissolved oxygen concentration and microbial activity in the bioreactor, the operation of the aeration equipment is controlled to provide sufficient oxygen for microbial respiration.

[0106] Sludge return control: According to the sludge concentration and sedimentation performance in the bioreactor, the operation of the sludge return pump is controlled to maintain the sludge concentration and activity in the reactor.

[0107] In this embodiment, according to the control instruction received from the central control module, the quartz sand purified wastewater with heavy metal ions removed is passed through an oxygen bioreactor, an anaerobic bioreactor and a membrane bioreactor connected in series, and then ozone oxidation and ultraviolet radiation technology are used to obtain quartz sand purified wastewater after organic matter is degraded;

[0108] The real-time monitoring data of dissolved oxygen concentration, organic matter removal rate and microbial activity in the biological treatment and deep purification modules are transmitted to the central control module.

[0109] Step 8: According to the control instructions of the central control module, valuable metal salts and wastewater that meets production water standards are recovered.

[0110] The recycling and circulation module control instructions include:

[0111] Metal salt recovery equipment control: According to the concentration and type of metal salts in the wastewater, the operating parameters of the recovery equipment are controlled to maximize the recovery rate of metal salts.

[0112] Standardized wastewater discharge / reuse control: Based on the real-time monitoring data of the treated wastewater quality, decide whether the wastewater should be discharged directly or reused in the production process, and control the corresponding discharge or reuse valves.

[0113] This embodiment uses electrodialysis or ion exchange technology to recover valuable metal salts from quartz sand purification wastewater after organic matter degradation according to the control instructions received from the central control module, and uses reverse osmosis technology to make the quartz sand purification wastewater after organic matter degradation reach the production water standard, and directly reuse it in the quartz sand purification production line or other water use links;

[0114] The real-time monitoring data of the recovery efficiency and effluent quality in the recovery and circulation module are transmitted to the central control module.

[0115] It should be understood by those skilled in the art that the embodiments of the present invention can be provided as methods, systems or computer program products. Therefore, the present invention can take the form of a complete hardware embodiment, a complete software embodiment or an embodiment combining software and hardware. Moreover, the present invention can take the form of a computer program product implemented on one or more computer-usable storage media containing computer-usable program codes. Among them, the storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (Static Random Access Memory, referred to as SRAM), electrically erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, referred to as EEPROM), erasable programmable read-only memory (Erasable Programmable Read Only Memory, referred to as EPROM), programmable read-only memory (Programmable Red-Only Memory, referred to as PROM), read-only memory (Read-Only Memory, referred to as ROM), magnetic memory, flash memory, disk or optical disk. These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0116] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A quartz sand purification wastewater secondary utilization treatment system, characterized in that: include: Central control module, used to integrate intelligent sensor network to obtain real-time monitoring data and issue control instructions based on real-time monitoring data; The wastewater acquisition module is connected to the central control module and the wastewater pretreatment module by signal, and is used to obtain the quartz sand purified wastewater according to the control instruction of the central control module, input the quartz sand purified wastewater pretreatment module, and transmit the real-time monitoring data of the wastewater acquisition module to the central control module; The wastewater pretreatment module is connected to the central control module and the wastewater pH adjustment module by signal, and is used to remove large solid impurities and suspended sand particles in the quartz sand purified wastewater according to the control instructions of the central control module, obtain pretreated quartz sand purified wastewater, and transmit the real-time monitoring data of the wastewater pretreatment module to the central control module; The wastewater pH adjustment module is connected to the central control module and the coagulation sedimentation and filtration module by signal, and is used to make the pH value of the pre-treated quartz sand purified wastewater within a preset pH value range according to the control instruction of the central control module, obtain the quartz sand purified wastewater after adjusting the pH value, and transmit the real-time monitoring data of the wastewater pH adjustment module to the central control module; The coagulation sedimentation and filtration module is connected to the central control module and the coagulation sedimentation and heavy metal ion removal module by signal, and is used to remove the suspended matter in the quartz sand purified wastewater after adjusting the pH value according to the control instruction of the central control module, obtain the quartz sand purified wastewater after coagulation sedimentation and filtration, and transmit the real-time monitoring data of the coagulation sedimentation and filtration module to the central control module; The heavy metal ion removal module is connected to the central control module and the coagulation sedimentation and biological treatment and deep purification module by signal, and is used to remove the heavy metal ions in the quartz sand purified wastewater after coagulation sedimentation and filtration according to the control instruction of the central control module, obtain the quartz sand purified wastewater with the heavy metal ions removed, and transmit the real-time monitoring data of the heavy metal ion removal module to the central control module; The biological treatment and deep purification module is connected to the central control module and the coagulation sedimentation and recovery and circulation module by signal, and is used to degrade the organic matter in the quartz sand purified wastewater from which heavy metal ions are removed according to the control instruction of the central control module, obtain the quartz sand purified wastewater after the organic matter is degraded, and transmit the real-time monitoring data of the biological treatment and deep purification module to the central control module; The recovery and circulation module is connected to the central control module by signal, and is used to recover valuable metal salts and wastewater that meets production water standards according to the control instructions of the central control module, and transmit the real-time monitoring data of the recovery and circulation module to the central control module.

2. The quartz sand purification wastewater secondary utilization treatment system according to claim 1, characterized in that: The real-time monitoring data include the inlet flow rate and suspended solids concentration of the wastewater pretreatment module, the pH value of the wastewater pH adjustment module, the coagulant dosage, sedimentation time and turbidity before and after filtration of the coagulation sedimentation and filtration module, the heavy metal ion concentration and precipitation efficiency of the heavy metal ion removal module, the dissolved oxygen concentration, organic matter removal rate and microbial activity of the biological treatment and deep purification module, and the recovery efficiency and effluent water quality of the recovery and circulation module.

3. The quartz sand purification wastewater secondary utilization treatment system according to claim 1, characterized in that: According to the control instructions of the central control module, large solid impurities and suspended sand particles in the quartz sand purification wastewater are removed to obtain pre-treated quartz sand purification wastewater, including: According to the control instructions received from the central control module, the large solid impurities in the quartz sand purified wastewater are removed by using the automatic identification and removal functions of the high-efficiency grid, so as to obtain the quartz sand purified wastewater after the large solid impurities are removed; Using cyclone separation technology, the suspended sand particles in the quartz sand purified wastewater after the large solid impurities are removed in the grit chamber are separated to obtain the pretreated quartz sand purified wastewater; And transmit the real-time monitoring data of the wastewater pretreatment module to the central control module.

4. The quartz sand purification wastewater secondary utilization treatment system according to claim 1, characterized in that: According to the control instruction of the central control module, the pH value of the pre-treated quartz sand purified wastewater is within a preset pH value range to obtain the quartz sand purified wastewater after adjusting the pH value, including: According to the control instructions received from the central control module, the pH value of the pretreated quartz sand purified wastewater is monitored, and according to the control instructions of the central control module, an acid-base regulator is automatically added to the pH adjustment tank to make the pH value of the pretreated quartz sand purified wastewater within a preset pH value range, thereby obtaining quartz sand purified wastewater after adjusting the pH value; And transmit the real-time monitoring data of the wastewater pH adjustment module to the central control module.

5. The quartz sand purification wastewater secondary utilization treatment system according to claim 1, characterized in that: According to the control instructions of the central control module, the suspended matter in the quartz sand purified wastewater after adjusting the pH value is removed to obtain the quartz sand purified wastewater after coagulation, precipitation and filtration, including: According to the control instructions received from the central control module, a bio-based coagulant is added to the coagulation tank to condense the tiny particles, organic matter and colloidal substances in the quartz sand purified wastewater after adjusting the pH value into larger flocs, and then filtered through four-stage filtration bodies of sand filtration, activated carbon filtration, precision filter and ceramic membrane filtration in turn to obtain coagulated, precipitated and filtered quartz sand purified wastewater; And transmit the real-time monitoring data of the coagulation sedimentation and filtration modules to the central control module.

6. The quartz sand purification wastewater secondary utilization treatment system according to claim 1, characterized in that: According to the control instruction of the central control module, heavy metal ions in the quartz sand purified wastewater after coagulation, precipitation and filtration are removed to obtain quartz sand purified wastewater with heavy metal ions removed, including: According to the control instruction received from the central control module, a chemical precipitation method is used to form insoluble precipitates with heavy metal ions in the quartz sand purified wastewater after coagulation precipitation and filtration and remove them, and then magnetic nanoparticles and ion exchange resins are added to obtain quartz sand purified wastewater with heavy metal ions removed; And transmit the real-time monitoring data of the heavy metal ion removal module to the central control module.

7. The quartz sand purification wastewater secondary utilization treatment system according to claim 1, characterized in that: According to the control instruction of the central control module, the organic matter in the quartz sand purified wastewater from which heavy metal ions are removed is degraded to obtain the quartz sand purified wastewater after the organic matter is degraded, including: According to the control instruction received from the central control module, the quartz sand purified wastewater with heavy metal ions removed is passed through an oxygen bioreactor, an anaerobic bioreactor and a membrane bioreactor connected in series, and then ozone oxidation and ultraviolet radiation technology are used to obtain quartz sand purified wastewater with organic matter degraded; And transmit the real-time monitoring data of the biological treatment and deep purification modules to the central control module.

8. The quartz sand purification wastewater secondary utilization treatment system according to claim 1, characterized in that: According to the control instructions of the central control module, valuable metal salts and wastewater that meets production water standards are recovered, including: According to the control instructions received from the central control module, the valuable metal salts are recovered from the quartz sand purification wastewater after the degradation of organic matter by using electrodialysis or ion exchange technology, and the quartz sand purification wastewater after the degradation of organic matter is made to meet the production water standard through reverse osmosis technology, and is directly reused in the quartz sand purification production line or other water use links; And transmit the real-time monitoring data of the recovery and circulation modules to the central control module.

9. The quartz sand purification wastewater secondary utilization treatment system according to claim 1, characterized in that: The central control module also includes a fault diagnosis and early warning module, which is used to monitor the operating status data of each module in real time, and issue an alarm when the operating status data of each module exceeds a preset normal operating status threshold.

10. The quartz sand purification wastewater secondary utilization treatment system according to claim 1, characterized in that: It also includes a wastewater treatment module, which is used to store and transport the wastewater obtained by the recovery and circulation module to the wastewater storage tank and the wastewater transportation pipeline according to the control instructions of the central control module, and transmit the real-time monitoring data of the wastewater treatment module to the central control module.

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