Device and method for treating decontamination wastewater

Abstract

The embodiment of the invention provides a decontamination wastewater treatment device and method. The device comprises a vehicle body; the wastewater treatment system is arranged on the vehicle body and comprises at least two groups of wastewater collection mechanisms, flocculation and filter pressing mechanisms, electric flocculation mechanisms, filtration and adsorption mechanisms and water quality detection mechanisms; the controller is electrically connected with the wastewater treatment system and is used for controlling the wastewater collection mechanism to carry out reduction, defoaming and mud-water separation on the decontamination wastewater to obtain first decontamination wastewater; controlling the flocculation filter pressing mechanism to perform hydraulic filter pressing on the first decontamination wastewater to obtain second decontamination wastewater; controlling the electric flocculation mechanism to perform electric flocculation on the second decontamination wastewater to obtain third decontamination wastewater; controlling the filtration and adsorption mechanism to perform activated carbon adsorption on the third decontamination wastewater to obtain a clear liquid; and receiving the water quality of the clear liquid detected by the water quality detection mechanism. According to the embodiment of the invention, the vehicle can quickly run to a to-be-treated site, and the use convenience is greatly improved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of chemical wastewater treatment technology, and in particular to a device and method for treating decontamination wastewater. Background Technology

[0002] Current decontamination wastewater treatment equipment is mostly ground-based, using biodegradation technology. These are mostly concrete pool structures, with relatively fixed locations that cannot be reliably moved, resulting in poor performance and inconvenience for treating decontamination wastewater in emergency rescue situations.

[0003] The treatment of decontamination wastewater mainly employs biological and flocculation methods. Biological methods have drawbacks such as long start-up times and large footprints, making them unsuitable for mobile treatment needs. Traditional flocculation processes suffer from slow reaction times and low COD removal rates. Furthermore, vehicle-mounted mobile wastewater treatment equipment faces severe limitations in terms of equipment type, quantity, and available space. Summary of the Invention

[0004] The technical problem to be solved by the embodiments of the present invention is to provide a device and method for treating decontamination wastewater, which can quickly travel to the site to be treated and greatly improve the ease of use.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows: A device for treating decontamination wastewater, comprising: Vehicle body; A wastewater treatment system installed on the vehicle body includes: at least two sets of wastewater collection mechanisms, flocculation and filter press mechanisms, electrocoagulation mechanisms, filtration and adsorption mechanisms, and water quality testing mechanisms. A controller electrically connected to the wastewater treatment system is used to control the wastewater collection mechanism to reduce, defoam, and separate mud and water in the washing and disinfection wastewater to obtain the first washing and disinfection wastewater; control the flocculation and filtration mechanism to perform hydraulic filtration on the first washing and disinfection wastewater to obtain the second washing and disinfection wastewater; control the electrocoagulation mechanism to perform electrocoagulation on the second washing and disinfection wastewater to obtain the third washing and disinfection wastewater; control the filtration and adsorption mechanism to perform activated carbon adsorption on the third washing and disinfection wastewater to obtain a clear liquid; and receive the water quality of the clear liquid as detected by the water quality testing mechanism.

[0006] Optionally, the wastewater collection mechanism includes: A water collection bladder, which is used to receive and store decontamination wastewater; A submersible mixer is installed inside the water collection bladder. The submersible mixer is used to stir and dissolve the decontamination wastewater and the reagent to obtain the first decontamination wastewater. A submersible pump is installed inside the water collection bladder, and the submersible pump is used to discharge the first decontamination wastewater; The reagents include a reducing agent, a demulsifier, an acid-base regulator, and a first flocculant.

[0007] Optionally, the flocculation and filter press mechanism includes: A flocculant dosing device; the flocculant dosing device is used to add a second flocculant to a pipeline mixer; Pipeline mixer; the pipeline mixer is used to mix the first decontamination wastewater with the second flocculant; A screw filter press; the screw filter press is used to perform solid-liquid separation on the first washing and disinfection wastewater after flocculation to obtain the second washing and disinfection wastewater and solid residue; Residue collection bag; the residue collection bag is used to collect solid residue; A vertical pump; the vertical pump is used to discharge the second decontamination wastewater.

[0008] Optionally, the flocculation and filter press mechanism further includes: A secondary hydraulic sludge device is used to perform secondary solid-liquid separation on solid residues.

[0009] Optionally, the electrocoagulation mechanism includes: An electrocoagulation device is used to separate pollutants in the second decontamination wastewater to obtain the third decontamination wastewater.

[0010] Optionally, the filtration and adsorption mechanism includes: At least one set of filters; At least one set of activated carbon canisters; Drainage bladder; The filter is used to remove suspended solids from the third decontamination wastewater; the activated carbon tank group is used to adsorb impurities in the third decontamination wastewater after the removal of suspended solids to obtain the clear liquid; and the drain bladder is used to collect the clear liquid.

[0011] Optionally, the water quality testing device is located at the outlet of the activated carbon tank assembly, and the water quality testing device includes: An oxygen demand analyzer is used to detect the oxygen demand of the clarified liquid; A suspended solids detector, wherein the suspended solids detector is used to detect the suspended solids index of the clear liquid; A pH meter, used to detect the pH of the clear liquid; An anionic surfactant detector is used to detect the anionic surfactant index of the clarified liquid.

[0012] Embodiments of the present invention also provide a method for treating decontamination wastewater, applied to the decontamination wastewater treatment apparatus as described above, the method comprising: The wastewater collection mechanism is controlled to reduce, defoam, and separate mud and water in the decontamination wastewater to obtain the first decontamination wastewater. The flocculation and filter press mechanism is controlled to perform hydraulic filter press on the first washing and disinfection wastewater to obtain the second washing and disinfection wastewater. The electrocoagulation mechanism is controlled to electrocoagulate the second decontamination wastewater to obtain the third decontamination wastewater. The filtration and adsorption mechanism is controlled to perform activated carbon adsorption on the third washing and disinfection wastewater to obtain a clear liquid. The water quality of the clear liquid is received from the water quality testing agency.

[0013] Optionally, the wastewater collection mechanism is controlled to reduce, defoam, and separate mud and water in the decontamination wastewater to obtain a first decontamination wastewater, including: The decontamination wastewater and reducing agent are injected into the water collection bag; The submersible mixer is controlled to stir the decontamination wastewater and the reducing agent; During stirring, the demulsifier is added to the water collection bladder; After stirring is complete, add the acid-base regulator to the water collection bag until the acid-base level reaches the set value; The first flocculant was added to the water collection bag to obtain the first washing and disinfection wastewater.

[0014] Optionally, the flocculation and filtration mechanism is controlled to perform hydraulic filtration on the first washing and disinfection wastewater to obtain the second washing and disinfection wastewater, including: The flocculation and filter press mechanism is controlled to perform hydraulic filter press on the first washing and disinfection wastewater discharged from each wastewater collection mechanism in sequence to obtain the second washing and disinfection wastewater.

[0015] The above-described solutions of the embodiments of the present invention have at least the following beneficial effects: The above-described solution of this invention adopts a vehicle-mounted configuration, which can be quickly driven to the site to be treated, solving the problem that traditional ground treatment devices are fixed in location and cannot be reliably moved. It is especially suitable for the treatment of decontamination wastewater in emergency rescue and other scenarios, and greatly improves the ease of use.

[0016] The process of flocculation-screw press filtration-hydraulic press filtration-electroflocculation-filtration adsorption avoids the disadvantages of long start-up time and slow reaction of traditional biochemical methods and traditional flocculation processes. It can quickly treat washing and disinfection wastewater, and through the cyclic operation of multiple sets of wastewater collection mechanisms, it can achieve continuous treatment and improve treatment efficiency.

[0017] The combined process includes electrocoagulation to deeply remove recalcitrant organic matter, activated carbon adsorption and other steps to further purify the water. At the same time, water quality testing agencies monitor the effluent indicators in real time. Multiple safeguards ensure that the treated effluent meets discharge standards, effectively avoiding secondary pollution caused by washing and disinfection wastewater. Attached Figure Description

[0018] Figure 1 This is a process flow diagram of the wastewater treatment device provided in an embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the structure of the wastewater treatment device provided in an embodiment of the present invention.

[0020] Figure 3 This is a schematic flowchart of a method for treating decontamination wastewater provided in an embodiment of the present invention.

[0021] The components include: 1. Frame; 2. Screw filter press; 3. Vertical pump; 4. Mixing tank; 5. Activated carbon tank group; 6. Metering pump; 7. Electrocoagulation device; 8. Filter; 9. Electrical control cabinet; 10. Secondary hydraulic sludge device; and 11. Pipeline. Detailed Implementation

[0022] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0023] like Figure 1 , 2 As shown, an embodiment of the present invention provides a device for treating decontamination wastewater, comprising: Vehicle body; A wastewater treatment system installed on the vehicle body includes: at least two sets of wastewater collection mechanisms, flocculation and filter press mechanisms, electrocoagulation mechanisms, filtration and adsorption mechanisms, and water quality testing mechanisms. A controller electrically connected to the wastewater treatment system is used to control the wastewater collection mechanism to reduce, defoam, and separate mud and water in the washing and disinfection wastewater to obtain the first washing and disinfection wastewater; control the flocculation and filtration mechanism to perform hydraulic filtration on the first washing and disinfection wastewater to obtain the second washing and disinfection wastewater; control the electrocoagulation mechanism to perform electrocoagulation on the second washing and disinfection wastewater to obtain the third washing and disinfection wastewater; control the filtration and adsorption mechanism to perform activated carbon adsorption on the third washing and disinfection wastewater to obtain a clear liquid; and receive the water quality of the clear liquid as detected by the water quality testing mechanism.

[0024] Specifically, the vehicle body includes: a vehicle body, a vehicle chassis, and a container. The container is fixed to the vehicle chassis via a subframe, which is a welded steel frame structure. The container is used to protect the wastewater treatment system, and the container and the wastewater treatment system are fixedly connected via a frame 1.

[0025] The wastewater collection mechanism, flocculation and filtration mechanism, electrocoagulation mechanism, filtration and adsorption mechanism, and water quality testing mechanism are connected by pipeline 11.

[0026] The power supply system of this treatment device is a diesel generator set. The vehicle cabling adopts a three-phase five-wire system. The equipment load is three-phase 380V, the peak operating power is 15.32kW, and a 24kW rated power generator set is used.

[0027] The controller displays the water quality indicators of the received purified liquid on a human-machine interface. The controller is located inside the electrical control cabinet 9.

[0028] In practical work, the vehicle is driven to the treatment site, and at least two sets of wastewater collection mechanisms are taken out from the vehicle and arranged around the vehicle. The controller controls the wastewater collection mechanisms to reduce, defoam, and separate mud and water in the washing and disinfection wastewater to obtain the first washing and disinfection wastewater; the controller controls the flocculation and filtration mechanism to perform hydraulic filtration on the first washing and disinfection wastewater to obtain the second washing and disinfection wastewater; the controller controls the electrocoagulation mechanism to perform electrocoagulation on the second washing and disinfection wastewater to obtain the third washing and disinfection wastewater; the controller controls the filtration and adsorption mechanism to perform activated carbon adsorption on the third washing and disinfection wastewater to obtain a clear liquid; and the water quality of the clear liquid is detected by the water quality testing mechanism.

[0029] In this example, the vehicle-mounted setup allows for rapid transport to the treatment site, solving the problem of traditional ground-based treatment devices being fixed in location and unable to be reliably moved. It is particularly suitable for decontamination wastewater treatment in emergency rescue and other scenarios, significantly improving ease of use.

[0030] The process of flocculation-screw press filtration-hydraulic press filtration-electroflocculation-filtration adsorption avoids the disadvantages of long start-up time and slow reaction of traditional biochemical methods and traditional flocculation processes. It can quickly treat washing and disinfection wastewater, and through the cyclic operation of multiple sets of wastewater collection mechanisms, it can achieve continuous treatment and improve treatment efficiency.

[0031] The combined process includes electrocoagulation to deeply remove recalcitrant organic matter, activated carbon adsorption and other steps to further purify the water. At the same time, water quality testing agencies monitor the effluent indicators in real time. Multiple safeguards ensure that the treated effluent meets discharge standards, effectively avoiding secondary pollution caused by washing and disinfection wastewater.

[0032] In an optional embodiment of the present invention, the wastewater collection mechanism includes: A water collection bladder, which is used to receive and store decontamination wastewater; A submersible mixer is installed inside the water collection bladder. The submersible mixer is used to stir and dissolve the decontamination wastewater and the reagent to obtain the first decontamination wastewater. A submersible pump is installed inside the water collection bladder, and the submersible pump is used to discharge the first decontamination wastewater; The reagents include a reducing agent, a demulsifier, an acid-base regulator, and a first flocculant.

[0033] Specifically, the water collection bladder includes a first water collection bladder SN1 and a second water collection bladder SN2, the submersible mixer includes a first submersible mixer J1 and a second submersible mixer J2, and the submersible pump includes a first submersible pump M1 and a second submersible pump M2.

[0034] Specifically, the water collection bladder is a soft, foldable, top-opening, self-standing water storage bladder made of PVC (polyvinyl chloride). A pH meter is installed inside the water collection bladder. The submersible pump and submersible mixer are made of stainless steel. The submersible pump has a flow rate ≥18 m³ / h and a head ≥18.2 m; the submersible mixer has a blade diameter ≥220 mm and a rotational speed of 980 r / min.

[0035] The reducing agent is sodium bisulfite solid, the demulsifier is sodium persulfate (a compound phosphorus removal agent), the acid-base regulator is sodium hydroxide, and the first flocculant is PAM (polyacrylamide). The agents are placed in the mixing tank 4, and the agents are added to the collection bladder via the metering pump 6.

[0036] In the specific work, the wastewater to be treated is injected into the first collection water tank SN1, and sodium bisulfite solid agent (reducing agent) is added to it. The first submersible mixer J1 is started and stirred for about 10 minutes. During this period, the compound phosphorus removal agent sodium persulfate (demulsifier) ​​is added to complete the reduction and defoaming process.

[0037] Sodium hydroxide (acid-base regulator) is added to SN1 to adjust the pH to 8, and then PAC (polyaluminum chloride) and PAM (first flocculant) are added. The mixture is thoroughly mixed by the first submersible mixer J1 so that the reagents react with the wastewater to form flocs.

[0038] Start the first submersible pump M1 to pump the first washing and disinfection wastewater (containing flocs) after reaction into the flocculation and filter press mechanism. At the same time, add the same agent to the second collection water tank SN2. After SN1 is completed, start the second submersible pump M2 to repeat the operation and achieve continuous treatment.

[0039] The agent is precisely added from the mixing tank 4 via the metering pump 6. The pH is monitored in real time by a pH meter inside the water bladder. The stainless steel material of the submersible pump and submersible mixer ensures corrosion resistance, while the soft PVC water bladder facilitates quick deployment and storage.

[0040] In this example, by sequentially adding reducing agent, demulsifier, pH adjuster and first flocculant, and thoroughly mixing with the help of a submersible mixer, the reduction, defoaming, pH adjustment and flocculation pretreatment of the washing and disinfection wastewater can be effectively completed, significantly reducing the concentration of pollutants in the wastewater, laying a good foundation for subsequent flocculation and filtration processes, and improving the overall treatment efficiency.

[0041] Two sets of water collection bladders, along with a submersible mixer and a submersible pump, are installed. When one set is treating wastewater, the other set can simultaneously perform operations such as adding chemicals. This cycle repeats continuously, achieving continuous collection and treatment of decontamination wastewater, avoiding the waiting time of single-set treatment, and increasing the treatment capacity per unit time.

[0042] The submersible pump and submersible mixer are made of stainless steel, which has good corrosion resistance and can adapt to the complex composition of decontamination wastewater. The water collection bladder is made of PVC, and its soft folding design not only facilitates quick unfolding and storage, but also effectively saves space, making it suitable for the use of vehicle-mounted mobile equipment.

[0043] The reagent is precisely added from the mixing tank 4 via the metering pump 6. The pH value is monitored in real time by the pH meter in the collection bladder, which can adjust the dosage of acid-base regulator in a timely manner to ensure stable pretreatment conditions, which is conducive to the formation of flocs and the stable progress of subsequent treatment.

[0044] The water collection bladder is a soft, foldable, top-opening, self-standing type, with short deployment and retraction times. The equipment has a high degree of automation, reducing the complexity of manual operation and enabling rapid response to the wastewater treatment needs in emergency rescue and other scenarios.

[0045] In an optional embodiment of the present invention, the flocculation and filter press mechanism includes: A flocculant dosing device; the flocculant dosing device is used to add a second flocculant to a pipeline mixer; Pipeline mixer; the pipeline mixer is used to mix the first decontamination wastewater with the second flocculant; Screw filter press 2; The screw filter press 2 is used to perform solid-liquid separation on the first washing and disinfection wastewater after flocculation to obtain the second washing and disinfection wastewater and solid residue; Residue collection bag; the residue collection bag is used to collect solid residue; Vertical pump 3; the vertical pump 3 is used to discharge the second decontamination wastewater.

[0046] Specifically, the flocculant dosing device includes a first flocculant dosing device G1, the pipeline mixer includes a first pipeline mixer H1, the screw filter press 2 includes a first screw filter press Y1, and the vertical pump 3 includes a first vertical pump M3.

[0047] Specifically, the flocculant dosing device includes: PAM (polyacrylamide, a coagulant aid) solution, a PAM dosing tank, a dosing pump, and pipeline valves. The PAM dosing tank is made of stainless steel, has a stirring and dissolving function, and has an effective volume of 1 m³. 3 The dosing pump adopts a mechanical diaphragm structure, which automatically draws liquid from the PAM dosing tank through a plastic hose for dosing. The maximum flow rate is 240 L / h and the discharge pressure is ≥0.7 MPa.

[0048] The pipeline mixer uses static mixing to mix the first decontamination wastewater with the second flocculant.

[0049] The screw filter press 2 is a continuous feeding screw extrusion solid-liquid separator with a maximum processing capacity of ≥60kg-DS / h and a sludge moisture content of ≤75%. The screw filter press 2 is equipped with a level gauge for monitoring the water level in the water tank and controlling the water intake of the screw filter press 2. When the water level in the screw filter press 2 exceeds the limit, the screw filter press 2 stops receiving water.

[0050] The residue collection bag is a waterproof ton bag made of PP (polypropylene) material, with an inner lining to prevent leakage, and an anti-spillage feature at the opening.

[0051] The vertical pump 3 has a flow rate of ≥10 m³ / h and a head of ≥62 m.

[0052] In specific operations, the first decontamination wastewater enters the first pipeline mixer H1 through pipeline 11, while the first flocculant dosing device G1 pumps PAM solution (second flocculant) into the pipeline mixer in proportion through a dosing pump. The static mixing method is used to fully mix the agent with the wastewater and promote the aggregation of flocs.

[0053] The mixed wastewater enters the first screw filter press Y1, where solid-liquid separation is achieved through continuous feeding screw extrusion. The separated second washing and disinfection wastewater is transported to the electrocoagulation unit via the first vertical pump M3, while the solid residue is discharged into the residue collection bag.

[0054] The built-in level gauge of the screw filter press 2 monitors the water tank level in real time, and stops water intake when the water level exceeds the limit; the residue collection bag is a waterproof ton bag made of PP material, with an inner membrane to prevent leakage and a spillage prevention device at the opening to ensure proper collection of solid residue.

[0055] The stainless steel dosing tank of the PAM dosing device is responsible for storing and stirring the dissolved PAM solution, and the dosing pump realizes automatic dosing through a plastic hose, which is suitable for the transportation needs of viscous PAM liquid.

[0056] In this example, PAM solution (second flocculant) is precisely added through the flocculant dosing device, and statically mixed with the first washing and disinfection wastewater through a pipeline mixer to fully integrate the agent, promote the agglomeration of flocs into larger particles, create favorable conditions for the subsequent solid-liquid separation of the screw filter press 2, and improve the separation efficiency.

[0057] The screw filter press 2 adopts a continuous feeding screw blade extrusion solid-liquid separation, which can effectively separate the second washing and disinfection wastewater and solid residue, greatly reducing the total amount of sludge and facilitating subsequent treatment.

[0058] The screw filter press 2 is equipped with a level gauge, which can monitor the water tank level in real time. When the water level exceeds the limit, it will automatically stop the water intake to avoid equipment overload. The dosing pump realizes automatic dosing of PAM solution, and the parameter settings are adapted to the delivery of viscous liquids, reducing manual intervention and ensuring that the treatment process is stable and controllable.

[0059] The residue collection bag is made of waterproof PP material, with an inner lining to prevent leakage and a spill prevention feature at the opening, which can safely collect solid residue and prevent secondary pollution caused by residue leakage.

[0060] In an optional embodiment of the present invention, the flocculation and filter press mechanism further includes: A secondary hydraulic sludge device 10 is used to perform secondary solid-liquid separation on solid residues.

[0061] Specifically, the secondary hydraulic sludge device 10 can be a hydraulic filter press.

[0062] In this example, the solid residue separated by the screw press filter 2 is further compressed by the secondary hydraulic sludge device 10, which can further reduce the moisture content, significantly reduce the volume and weight of the sludge, achieve deep sludge reduction, and facilitate subsequent transportation, storage and final disposal (such as landfill, incineration, etc.), thereby reducing disposal costs.

[0063] Secondary hydraulic filtration uses stronger pressure to further separate the residual moisture and small amounts of contaminants in the residue, making the separation more thorough, reducing the content of contaminants in the sludge, and lowering the risk of secondary pollution from the sludge.

[0064] In an optional embodiment of the present invention, the electrocoagulation mechanism includes: Electrocoagulation device 7 is used to separate pollutants in the second washing and disinfection wastewater to obtain the third washing and disinfection wastewater.

[0065] Specifically, the electrocoagulation device 7 includes a first electrocoagulation device D1.

[0066] Specifically, the electrocoagulation device 7 uses alloy metals such as aluminum and iron as the main electrodes. It generates an electrochemical reaction by means of an external pulsed high voltage, converting electrical energy into chemical energy. The sacrificial anode metal electrode produces metal cationic flocculants, which separate pollutants from the water body through coagulation, flotation, reduction and oxidative decomposition.

[0067] In practical operation, the vertical pump 3 pumps the second decontamination wastewater into the first electrocoagulation device D1. This device uses alloy metals such as aluminum and iron as the main electrodes, and an electrochemical reaction occurs under pulsed high voltage, converting electrical energy into chemical energy. The anode metal electrode is sacrificed to produce metal cation flocculants. Through coagulation, flotation, reduction, and oxidative decomposition, pollutants in the second decontamination wastewater are separated from the water body, thus obtaining the third decontamination wastewater, laying the foundation for subsequent filtration and adsorption treatment.

[0068] In this example, the electrocoagulation device 7 uses aluminum, iron and other alloy metals as the main electrodes. Under the action of pulsed high voltage, an electrochemical reaction occurs. Through multiple actions such as coagulation, flotation, reduction and oxidative decomposition, it can effectively separate pollutants in the second washing and disinfection wastewater, especially deeply remove refractory organic matter. This solves the problem of insufficient removal capacity of traditional treatment processes for highly stable organic matter and improves the biodegradability of wastewater.

[0069] The device converts electrical energy into chemical energy and generates metal cation flocculants through sacrificial anodes, eliminating the need for additional flocculant addition, thus reducing reagent consumption. At the same time, the reaction process is highly efficient and can quickly purify wastewater, meeting the rapid processing needs of vehicle-mounted mobile equipment.

[0070] The electrocoagulation device 7, as an integrated unit, has a relatively compact structure, which is suitable for the space constraints of vehicle-mounted equipment. It can be smoothly connected to the pre- and post-processing stages through the vertical pump 3 without complicated manual intervention, making it easy to work in coordination with the overall system and ensuring the continuity of the processing flow.

[0071] The third washing and disinfection wastewater obtained after electrocoagulation treatment has a significantly reduced pollutant concentration, which creates favorable conditions for further deep purification by the subsequent filtration and adsorption mechanism, ensuring that the final effluent can meet the discharge standards.

[0072] In an optional embodiment of the present invention, the filtration and adsorption mechanism includes: At least one set of filters 8; At least one set of activated carbon canisters (5); Drainage bladder; The filter 8 is used to remove suspended solids from the third decontamination wastewater; the activated carbon tank group 5 is used to adsorb impurities in the third decontamination wastewater after the removal of suspended solids to obtain the clear liquid; and the drain bag is used to collect the clear liquid.

[0073] Specifically, the filter 8 includes a first filter T1 and a second filter T2, the activated carbon tank group 5 includes a first activated carbon tank group T3 and a second activated carbon tank group T4, and the drain bag includes a first drain bag SN3.

[0074] Specifically, the filter 8 is a high-flow filter, with its outer shell made of bent and welded stainless steel plate. The activated carbon tank group 5 is a combination of multiple small filters, with the tank body made of resin. The filtration and adsorption units are 26 type 1252 fiberglass tanks. The drain bladder and the water collection bladder are made of the same type of water bladder.

[0075] In practice, the third decontamination wastewater first enters the first filter T1 and the second filter T2 (two sets of high-flow filters connected in parallel). Their stainless steel outer shells effectively remove suspended solids from the water, providing a foundation for subsequent adsorption. Next, the filtered wastewater enters activated carbon tank group 5. Depending on the treatment volume, either the first activated carbon tank group T3 (9 sets, 18 tanks) or the second activated carbon tank group T4 (4 sets, 8 tanks) is selected. The 26 1252-type fiberglass tanks are combined with resin tanks, and impurities are removed through deep adsorption by activated carbon. Finally, the treated clear liquid is discharged into the first drainage tank SN3, made of the same material as the collection water tank, completing the treatment.

[0076] In this example, two sets of high-flow-rate filters (T1 and T2) are used in parallel. Their stainless steel shell structure can effectively remove suspended solids in the third washing and disinfection wastewater, providing a clean water quality basis for the subsequent activated carbon adsorption process and improving adsorption efficiency.

[0077] The activated carbon tank group 5 (T3, T4) is composed of multiple small filters. The 26 1252 type fiberglass tanks are combined with resin tanks. Through the adsorption of activated carbon, organic and inorganic impurities in wastewater can be deeply removed, further improving water quality and ensuring that the effluent meets the standards.

[0078] Different activated carbon tank groups 5 can be flexibly selected according to the amount of water to be treated. When the wastewater volume is small, T4 is selected, and when it is large, T3 is selected. When the limit of a single group is exceeded, two groups are used at the same time, which can effectively meet different treatment needs and improve the adaptability of the equipment.

[0079] The outer shell of the filter 8 is made of stainless steel plate by bending and welding, which has good durability and corrosion resistance; the activated carbon tank assembly 5 is made of resin, which is lightweight and easy to replace, making it suitable for the use of vehicle-mounted mobile equipment.

[0080] The drainage bladder and the water collection bladder are made of the same material, which can reliably receive the cleaned liquid after it meets the standards, avoid secondary pollution, and ensure the integrity and safety of the treatment process.

[0081] In an optional embodiment of the present invention, the water quality testing mechanism is located at the outlet of the activated carbon tank group 5, and the water quality testing mechanism includes: An oxygen demand analyzer is used to detect the oxygen demand of the clarified liquid; A suspended solids detector, wherein the suspended solids detector is used to detect the suspended solids index of the clear liquid; A pH meter, used to detect the pH of the clear liquid; An anionic surfactant detector is used to detect the anionic surfactant index of the clarified liquid.

[0082] Specifically, the water quality testing agency includes the first water quality testing agency JC.

[0083] Specifically, the oxygen demand detector is a COD / BOD5 (chemical oxygen demand / five-day biochemical oxygen demand) electrode, which adopts an RS485 communication interface and standard Modbus protocol, and comes with a cleaning brush. It can simultaneously measure the absorbance of water at 254nm and 546nm, and can convert it into BOD and COD.

[0084] The suspended solids detector is an SS (suspended solids) electrode, uses an RS485 communication interface and standard Modbus protocol, comes with a cleaning brush, uses an infrared light source, is not affected by the color of the water sample, and uses a 90° scattering method.

[0085] The pH meter is a pH electrode, uses an RS485 communication interface and standard Modbus protocol, and has a built-in PT100 temperature sensor and compensation algorithm.

[0086] The anionic surfactant detector is an LAS (anionic surfactant) detector.

[0087] In practical operation, the first water quality testing unit JC is located at the outlet of activated carbon tank group 5 to perform online testing on the clear liquid before it enters the drainage bladder after treatment. Specifically, the COD / BOD5 electrode (oxygen demand analyzer) measures and converts the absorbance of the water at 254nm and 546nm to obtain chemical oxygen demand and five-day biochemical oxygen demand; the SS electrode (suspended solids analyzer) uses an infrared light source and a 90° scattering method to detect suspended solids, unaffected by water sample color; the pH electrode (acidity / alkalinity analyzer) monitors acidity / alkalinity using a built-in PT100 temperature sensor and compensation algorithm; and the LAS analyzer (anionic surfactant analyzer) specifically detects the content of anionic surfactants in the clear liquid. All testing equipment interacts with the control system via an RS485 communication interface and the standard Modbus protocol, providing real-time feedback of testing data to ensure that the effluent meets standards.

[0088] This example covers key indicators such as oxygen demand (COD / BOD5), suspended solids (SS), pH, and anionic surfactants (LAS), which can comprehensively reflect the water quality of the clarified solution and ensure that the treated wastewater meets the requirements for safe discharge.

[0089] It interacts with the control system via RS485 communication interface and standard Modbus protocol, enabling real-time feedback of detection data. This allows operators to promptly grasp the operating status of the wastewater treatment system, facilitating quick problem detection and adjustment measures.

[0090] The equipment is highly adaptable. For example, the LAS detector can be stored in extreme environments and is resistant to vibration and shock, making it suitable for use in vehicle-mounted mobile equipment scenarios and ensuring stable operation in different environments.

[0091] Online monitoring of various indicators provides a direct basis for ensuring wastewater meets discharge standards, preventing secondary pollution caused by unqualified wastewater discharge and effectively reducing the risk of environmental pollution.

[0092] like Figure 3 As shown, embodiments of the present invention also provide a method for treating decontamination wastewater, applied to the decontamination wastewater treatment apparatus as described above, the method comprising: Step 31: Control the wastewater collection mechanism to reduce, defoam, and separate mud and water in the washing and disinfection wastewater to obtain the first washing and disinfection wastewater; Step 32: Control the flocculation and filter press mechanism to perform hydraulic filter press on the first washing and disinfection wastewater to obtain the second washing and disinfection wastewater; Step 33: Control the electrocoagulation mechanism to electrocoagulate the second washing and disinfection wastewater to obtain the third washing and disinfection wastewater; Step 34: Control the filtration and adsorption mechanism to perform activated carbon adsorption on the third washing and disinfection wastewater to obtain a clear liquid; Step 35: Receive the water quality of the clarified liquid as tested by the water quality testing agency.

[0093] In this example, by controlling the wastewater collection mechanism, flocculation and filtration mechanism, electrocoagulation mechanism, filtration and adsorption mechanism and water quality testing mechanism in stages, a continuous treatment process is formed, which can quickly treat the washing and disinfection wastewater and meet the emergency treatment needs.

[0094] Step 31, reduction, defoaming, and mud-water separation, can reduce a large number of pollutants; step 32, hydraulic filtration, further separates solids and liquids; step 33, electrocoagulation, deeply removes recalcitrant organic matter; step 34, activated carbon adsorption, achieves deep purification. The synergistic effect of multiple steps ensures thorough removal of pollutants, and the final effluent meets the standards.

[0095] The controller automates the operation of each mechanism, reducing manual intervention and operational difficulty. Meanwhile, step 35 receives water quality test results in real time, allowing operators to promptly grasp the processing status and make adjustments, thus improving the stability and reliability of the system.

[0096] The method is compatible with vehicle-mounted processing devices and can be quickly moved to the processing site with the equipment. It is especially suitable for scenarios that require rapid response, such as emergency rescue, and solves the problems of fixed location and poor flexibility of traditional ground processing devices.

[0097] Through a complete treatment process and water quality testing, the treated solution is safely discharged. At the same time, waste such as sludge generated during the treatment process is treated in a standardized manner, which effectively avoids secondary hazards caused by disinfection wastewater and reduces environmental pollution.

[0098] In an optional embodiment of the present invention, step 31 involves controlling the wastewater collection mechanism to reduce, defoam, and separate the sludge from the decontamination wastewater to obtain a first decontamination wastewater, including: Step 311: Inject the decontamination wastewater and reducing agent into the collection water bag; Step 312: Control the submersible mixer to stir the decontamination wastewater and the reducing agent; Step 313: During stirring, add the demulsifier to the water collection sac; Step 314: After stirring is complete, add the acid-base regulator to the water collection bag until the acid-base level reaches the set value. Step 315: Add the first flocculant to the water collection bag to obtain the first washing and disinfection wastewater.

[0099] In this example, by adding a reducing agent, demulsifier, pH adjuster, and primary flocculant in stages, and coordinating with a submersible mixer, the pretreatment of washing and disinfection wastewater—including reduction, defoaming, and mud-water separation—can be completed systematically. The reducing agent reduces the hazardousness of the wastewater, the demulsifier eliminates foam to facilitate subsequent treatment, the pH adjuster adjusts the wastewater's pH to a suitable range, and the primary flocculant promotes pollutant coagulation. The synergistic effect of these multiple steps significantly reduces the concentration of pollutants in the wastewater, laying a solid foundation for subsequent treatment. Furthermore, the operation process is clear and easy to automate.

[0100] In an optional embodiment of the present invention, step 32, controlling the flocculation and filtration mechanism to perform hydraulic filtration on the first washing and disinfection wastewater to obtain the second washing and disinfection wastewater, includes: Step 321: Control the flocculation and filter press mechanism to perform hydraulic filter press on the first washing and disinfection wastewater discharged from each wastewater collection mechanism in sequence to obtain the second washing and disinfection wastewater.

[0101] In this example, the flocculation and filtration mechanism is controlled to sequentially perform hydraulic filtration on the first washing and disinfection wastewater discharged from each wastewater collection unit. This enables continuous treatment, avoiding interruptions and waiting times common in single-unit treatment, and improving overall treatment efficiency. Simultaneously, hydraulic filtration further separates solids and liquids, reducing the water content of the sludge and decreasing the total amount of sludge, facilitating subsequent treatment and disposal, and ensuring the continuity and efficiency of the treatment process.

[0102] This invention adopts a vehicle-mounted setup, with the vehicle system including a car chassis, a container, and a subframe, which can quickly travel to the site to be treated. This solves the problems of fixed location and poor flexibility of traditional ground treatment devices, and is especially suitable for decontamination wastewater treatment scenarios that require rapid response, such as emergency rescue, greatly improving ease of use.

[0103] The combined process of "flocculation-screw press filtration-hydraulic press filtration-electroflocculation-filtration-adsorption" avoids the disadvantages of long start-up time and slow reaction of traditional biochemical methods and traditional flocculation processes. By using multiple sets of wastewater collection mechanisms in cyclic operation, combined with the flocculation and press filtration mechanism to process the wastewater discharged from each collection mechanism in sequence, continuous treatment is achieved, increasing the treatment capacity per unit time.

[0104] The wastewater collection system significantly reduces pollutant concentrations through reduction, defoaming, pH adjustment, and flocculation pretreatment; the flocculation and filter press system further separates solids and liquids, reducing the water content of the sludge; the electrocoagulation system deeply removes recalcitrant organic matter, improving the biodegradability of the wastewater; the filtration and adsorption system achieves deep purification through high-flow filtration and activated carbon adsorption; and the water quality testing system monitors key indicators in real time, with multiple safeguards ensuring that the treated clear liquid meets discharge standards and effectively preventing secondary pollution.

[0105] The controller automates the operation of each mechanism, enabling automatic completion of tasks such as reagent dosing and equipment start-up and shutdown, reducing manual intervention. The controller displays water quality indicators on a human-machine interface, allowing operators to monitor the treatment status and make adjustments promptly, thus improving the stability and reliability of the system.

[0106] The materials of each component are adapted to complex wastewater environments (such as stainless steel pumps and mixers with strong corrosion resistance, and PVC water bladders for easy storage), and the structure is compact (such as the activated carbon tank group 5 which adopts a small combined setting), which is suitable for vehicle space constraints. At the same time, the secondary hydraulic sludge device 10 further reduces the total amount of sludge, making it easier for subsequent disposal.

[0107] The sludge generated during the treatment process is collected in a standardized manner through residue collection bags, and the treated clear liquid is discharged after testing and meeting the standards, which comprehensively reduces the secondary hazards of washing and disinfection wastewater and reduces environmental pollution.

[0108] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "detailed implementation," or "some implementations," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0109] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A device for treating decontamination wastewater, characterized in that, include: Vehicle body; A wastewater treatment system installed on the vehicle body includes: at least two sets of wastewater collection mechanisms, flocculation and filter press mechanisms, electrocoagulation mechanisms, filtration and adsorption mechanisms, and water quality testing mechanisms. A controller electrically connected to the wastewater treatment system is used to control the wastewater collection mechanism to reduce, defoam, and separate mud and water in the washing and disinfection wastewater to obtain the first washing and disinfection wastewater; control the flocculation and filtration mechanism to perform hydraulic filtration on the first washing and disinfection wastewater to obtain the second washing and disinfection wastewater; control the electrocoagulation mechanism to perform electrocoagulation on the second washing and disinfection wastewater to obtain the third washing and disinfection wastewater; control the filtration and adsorption mechanism to perform activated carbon adsorption on the third washing and disinfection wastewater to obtain a clear liquid; and receive the water quality of the clear liquid as detected by the water quality testing mechanism.

2. The wastewater treatment apparatus according to claim 1, characterized in that, The wastewater collection system includes: A water collection bladder, which is used to receive and store decontamination wastewater; A submersible mixer is installed inside the water collection bladder. The submersible mixer is used to stir and dissolve the decontamination wastewater and the reagent to obtain the first decontamination wastewater. A submersible pump is installed inside the water collection bladder, and the submersible pump is used to discharge the first decontamination wastewater; The reagents include a reducing agent, a demulsifier, an acid-base regulator, and a first flocculant.

3. The wastewater treatment apparatus according to claim 1, characterized in that, The flocculation and filter press mechanism includes: A flocculant dosing device; the flocculant dosing device is used to add a second flocculant to a pipeline mixer; Pipeline mixer; the pipeline mixer is used to mix the first decontamination wastewater with the second flocculant; Screw filter press (2); The screw filter press (2) is used to perform solid-liquid separation on the first washing and disinfection wastewater after flocculation to obtain the second washing and disinfection wastewater and solid residue; Residue collection bag; the residue collection bag is used to collect solid residue; Vertical pump (3); the vertical pump (3) is used to discharge the second decontamination wastewater.

4. The wastewater treatment apparatus according to claim 1, characterized in that, The flocculation and filter press mechanism also includes: A secondary hydraulic sludge device (10) is used to perform secondary solid-liquid separation on solid residues.

5. The wastewater treatment apparatus according to claim 1, characterized in that, The electrocoagulation mechanism includes: Electrocoagulation device (7) is used to separate pollutants in the second washing and disinfection wastewater to obtain the third washing and disinfection wastewater.

6. The wastewater treatment apparatus according to claim 1, characterized in that, The filtration and adsorption mechanism includes: At least one set of filters (8); At least one set of activated carbon canisters (5); Drainage bladder; The filter (8) is used to remove suspended solids from the third decontamination wastewater; the activated carbon tank group (5) is used to adsorb impurities in the third decontamination wastewater after the removal of suspended solids to obtain the clear liquid; and the drain bag is used to receive the clear liquid.

7. The wastewater treatment apparatus according to claim 6, characterized in that, The water quality testing device is located at the outlet of the activated carbon tank group (5), and the water quality testing device includes: An oxygen demand analyzer is used to detect the oxygen demand of the clarified liquid; A suspended solids detector, wherein the suspended solids detector is used to detect the suspended solids index of the clear liquid; A pH meter, used to detect the pH of the clear liquid; An anionic surfactant detector is used to detect the anionic surfactant index of the clarified liquid.

8. A method for treating decontamination wastewater, characterized in that, The method, applied to the treatment apparatus for decontamination wastewater as described in any one of claims 1 to 7, comprises: The wastewater collection mechanism is controlled to reduce, defoam, and separate mud and water in the decontamination wastewater to obtain the first decontamination wastewater. The flocculation and filter press mechanism is controlled to perform hydraulic filter press on the first washing and disinfection wastewater to obtain the second washing and disinfection wastewater. The electrocoagulation mechanism is controlled to electrocoagulate the second decontamination wastewater to obtain the third decontamination wastewater. The filtration and adsorption mechanism is controlled to perform activated carbon adsorption on the third washing and disinfection wastewater to obtain a clear liquid. The water quality of the clear liquid is received from the water quality testing agency.

9. The method for treating decontamination wastewater according to claim 8, characterized in that, The wastewater collection mechanism is controlled to reduce, defoam, and separate mud and water in the decontamination wastewater to obtain the first decontamination wastewater, which includes: The decontamination wastewater and reducing agent are injected into the water collection bag; The submersible mixer is controlled to stir the decontamination wastewater and the reducing agent; During stirring, the demulsifier is added to the water collection bladder; After stirring is complete, add the acid-base regulator to the water collection bag until the acid-base level reaches the set value; The first flocculant was added to the water collection bag to obtain the first washing and disinfection wastewater.

10. The method for treating decontamination wastewater according to claim 8, characterized in that, The flocculation and filtration mechanism is controlled to perform hydraulic filtration on the first washing and disinfection wastewater to obtain the second washing and disinfection wastewater, including: The flocculation and filter press mechanism is controlled to perform hydraulic filter press on the first washing and disinfection wastewater discharged from each wastewater collection mechanism in sequence to obtain the second washing and disinfection wastewater.

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