821results about "Treatment using complexing/solubilising chemicals" patented technology

The disclosure relates to an intelligent dosing control method, device and system for softening and removing hardness. Based on calculation by the intelligent dosing control method or device for softening and removing hardness of the disclosure, a softening agent dosing scheme can be intelligently recommended, while allowing the dosage adjustment in real time, thereby realizing the real-time and precise dosing of agents throughout the process. The intelligent dosing control system for softening and removing hardness of the disclosure automatic monitors the inlet water quality, and the dosing device can be controlled to perform precise dosing of agents through the calculation by the intelligent dosing control method or device for softening and removing hardness. Based on the monitoring feedback of outlet water quality and then calculation by the intelligent dosing control method and / or device for softening and removing hardness, the agent dosage can be automatically readjusted.

The invention relates to an oilfield underground slow-release scale and corrosion inhibitor and a production process thereof, and aims to solve the problems of scaling and corrosion caused by water injection in the oilfield exploitation process. According to the scale and corrosion inhibitor, various components such as the inorganic salt, the organic corrosion inhibitor and the natural plant extract are compounded, and a production process is combined, so that excellent properties such as long-acting slow release, efficient scale and corrosion inhibition, sterilization and algae removal, environmental protection and degradability are realized. The production process comprises the steps of raw material preparation, mixing reaction, melting homogenization, cooling forming, annealing treatment and the like, and stable performance and reliable quality of the scale and corrosion inhibitor are ensured by controlling process parameters of each step. The scale and corrosion inhibitor disclosed by the invention has obvious long-term effect, the workload of frequent addition and maintenance can be reduced, and the production cost is reduced; the environment-friendly and degradable characteristics meet the modern environment-friendly requirements, and the ecological environment can be protected. In addition, the scale and corrosion inhibitor has good adaptability and can adapt to different oil field geological conditions and fluid property differences.

The invention discloses a treatment method for efficiently removing hardness by using high-salinity wastewater. The treatment method comprises the following steps: introducing the high-salinity wastewater into an adjusting tank, and stirring and mixing; adding alkali liquor into the mixed water in the adjusting tank to generate insoluble precipitates so as to remove the hardness in the water; introducing the softened wastewater into a sedimentation tank, and further promoting the aggregation and sedimentation of suspended solids and sediments by adding a flocculating agent; inputting supernatant after flocculation and precipitation into filter pressing equipment for filtering to obtain filtrate and filter residues; according to the process scheme designed by the invention, the sulfate-containing wastewater is added into the water treatment regulating tank, so that the content of calcium and magnesium in the wastewater can be effectively reduced, the hardness is reduced, and the purposes of treating waste with waste and turning waste into wealth are really achieved.

The invention provides a method for softening sewage and synchronously removing fluorine, which comprises the following steps: detecting the concentration of calcium ions and the concentration of fluorine ions in high-calcium and high-fluorine wastewater, and adjusting the pH value of the high-calcium and high-fluorine wastewater to 6.5-8.0; adjusting the temperature of the high-calcium high-fluorine wastewater to 25-35 DEG C; dihydric phosphate is added into the mixture; wherein the molar weight ratio of PO4 < 3-> to calcium ions is 3: 5; meanwhile, the molar weight ratio of PO4 < 3-> to fluorine ions is 3: 1. According to the method for softening sewage and synchronously removing fluorine, a chemical precipitation method is adopted, a dihydric phosphate agent is accurately added into high-calcium and high-fluorine wastewater, and calcium fluorophosphate precipitate is generated through a chemical reaction, so that the aim of synchronously removing calcium ions and fluorine ions is achieved, and the dual effects of softening sewage and removing fluorine are achieved.

The invention discloses equipment for generating multistage small molecular group water, belongs to the technical field of preparation of small molecular group water, and aims to solve the problems that the continuity of a small molecular group water production process is influenced as scale is remained on a filter screen assembly, the water flow is reduced, the water pressure of a pipeline is high, the filtering performance is reduced, and the filter screen assembly does not have self-cleaning capability. The device comprises a buffer tank and a generating device arranged on one side of the buffer tank, a pressure pump, a filter cartridge and a cleaning pump are further arranged on one side of the buffer tank, a filter screen assembly and a position adjusting assembly are fixedly installed on the inner wall of an inner cavity of the filter cartridge, and a cleaning assembly is rotatably installed on the side wall of one side of the filter screen assembly; according to the filter screen cleaning device, the problems that after the filter screen is used for a period of time, a large amount of water scale is left, the water flow is reduced, and the pipeline pressure is increased can be solved, the service life of the filter screen is prolonged, and the cleaning and maintaining frequency of personnel is reduced.

The invention discloses a novel sewage softening and silicon removal synchronous method and system. The method comprises the following steps: detecting the concentration of calcium ions and the concentration of silicon dioxide in wastewater; adjusting the pH value of the wastewater; adjusting the temperature of the wastewater; adding a sodium hydroxide agent into the wastewater and stirring; and carrying out solid-liquid separation to obtain treated wastewater. According to the method, a chemical precipitation method is adopted, a sodium hydroxide agent is added into the high-calcium and high-silicon-dioxide wastewater, and a calcium silicate precipitate is generated through a chemical reaction, so that the aim of removing calcium ions and silicon dioxide is synchronously achieved, and the dual effects of sewage softening and silicon removal are achieved.

The utility model relates to the technical field of water treatment, in particular to a composite filter element, a filter element assembly and a water purification system, which comprise a first filter layer, an activated carbon fiber layer and a second filter layer which are sequentially wound on a central pipe from inside to outside, scale inhibitor or bacteriostatic agent particles are distributed on the activated carbon fiber layer; and when the activated carbon fiber layer is coiled, the scale inhibitor or bacteriostatic agent particles are sunk in the activated carbon fiber layer. The scale inhibitor is distributed on the activated carbon fiber layer in the form of particles, the scale inhibitor or bacteriostatic agent particles are well wrapped in the activated carbon fibers by utilizing the characteristics that the activated carbon fibers are thick, soft and easy to deform, and the deformation of the filter element is not caused, so that the scale inhibitor can be prevented from leaking, and the service life of the filter element is prolonged. And a special space for accommodating the scale inhibitor does not need to be arranged in the shell or the end cover.

The utility model discloses a metallurgical wastewater pretreatment device. Metallurgical wastewater comprises clean wastewater, polluted acid wastewater and acidic wastewater, the metallurgical wastewater pretreatment device comprises a vulcanization reaction tank, a neutralization reaction tank, a neutralization reaction water production tank and a softening reaction tank which are sequentially arranged along the treatment direction of waste acid wastewater, the reaction water production tank and the softening reaction tank are sequentially arranged along the treatment direction of the acid wastewater; the coagulative precipitation tank is arranged along the treatment direction of the clean wastewater; effluent of the softening reaction tank and the coagulative precipitation tank enters a subsequent advanced treatment system. The pretreatment device disclosed by the utility model is used for wastewater pretreatment of the whole plant in the non-ferrous metal smelting industry, clean sewage diversion and rain sewage diversion are adopted, water balance, energy conservation and consumption reduction of the whole plant are realized, and finally resource utilization of the whole plant is realized.

The invention discloses an automatic dosing system applied to circulating water modification treatment, and relates to the technical field of circulating water modification, the automatic dosing system specifically comprises a dosing tank, the inner wall of the dosing tank is fixedly connected with a mixing cylinder, and the top of the mixing cylinder is provided with a quantitative dosing mechanism; when circulating water is automatically added with chemicals, matching data of the rotating speed of the rotating shaft and the descending distance of the sliding sealing column are firstly obtained, when specified chemicals or composite chemicals need to be added into the circulating water, the specified rotating speed of the rotating shaft is adjusted through the controller, and compared with additional chemical adding equipment, the chemicals are automatically added through rotating speed adjustment and control; circulating water and chemicals are fully stirred and mixed through a stirring rod, a driving assembly stops working, the stirring rod shrinks, a sealing sleeve at the bottom of the mixing barrel is automatically pulled up, a notch in the sealing sleeve is communicated with the mixing barrel, chemical feeding and circulating water automatic drainage are completed, the automation degree is high, and control operation is easy.

The present invention provides a self-scaling and self-sterilizing circulating cooling water system, comprising an electrochemical electrolysis device arranged on a pipeline of the circulating water system; the electrochemical electrolysis device is used to convert chloride ion-containing water into H + and oxidizing chlorine species, and then the H-rich + The system of the present invention directly connects the electrochemical electrolysis device to the original circulating cooling water system, and utilizes the action of the electrochemical electrolysis device to generate H-rich + and oxidizing chlorine species in water and input the water into the pipeline for scale inhibition and sterilization of the water, replacing the traditional technical means of adding sulfuric acid, scale inhibitors and bactericides into the circulating water system.

The invention relates to the technical field of mine water treatment, and discloses a method for treating high-calcium-hardness mine water through induced crystallization. The method comprises the following steps: adding coal gangue and sodium phosphate or sodium hydrogen phosphate into the mine water to carry out first induced crystallization so as to remove calcium ions in the mine water; according to the method provided by the invention, the concentration of calcium ions in the mine water after calcium removal can be stabilized for a long time, and the removal rate of the mine water is improved to a certain extent. The method provided by the invention can effectively ensure that the Ca < 2 + > content of the effluent quality of the mine water reaches the standard, and can also reduce secondary environmental pollution.

The invention provides a strong brine zero-discharge circulating cooling water high-salt operation method and system. The method comprises the following steps: S1, pretreating high-efficiency membrane softening produced water and controlling a shunting dynamic ratio; s2, variable parameter closed-loop control and energy consumption optimization of the water supplementing system; s3, multi-variable cooperative regulation and evaporation efficiency improvement of the circulating water system; s4, dynamically adding the high-salt scale and corrosion inhibitor and controlling the uniformity of a concentration field; s5, multi-dimensional data fusion and intelligent decision making of the online detection system; s6, carrying out dynamic flow regulation and energy recovery on the sewage discharge system; s7, carrying out self-adaptive backwashing and efficiency monitoring on the sewage filtering system; s8, double-circulation temperature difference matching and anti-scaling control of the closed cooling system are carried out; s9, simulating multi-working-condition corrosion monitoring and data inversion of the heat exchanger; s10, carrying out the digital twinborn modeling and parameter optimization of the whole system; the method has the advantages of remarkable water-saving effect, energy conservation, consumption reduction, stable operation and good economical efficiency.

The invention provides an efficient softening and hardness-removing process for a high-hardness water body, which is applied to the technical field of water body purification. The efficient softening and hardness-removing process comprises a pretreatment mechanism, a softening reaction mechanism, a flocculent precipitation mechanism and a sludge closed-loop treatment mechanism which are sequentially connected along a water body treatment flow direction, the efficient softening and hardness-removing process for the high-hardness water body comprises the following raw water treatment steps: S1, treating raw water by virtue of the pretreatment mechanism, so as to obtain ultrafiltration effluent; and S2, the ultrafiltration effluent enters the softening reaction mechanism, and under the control of the electric cabinet control mechanism, chemicals are added for softening and flocculation reaction. The total hardness removal rate can reach more than 90% through accurate addition of the medicament, two-stage pH control and optimization of reaction conditions, which is far superior to that of a traditional resin ion exchange method, the influence of high-hardness water discharge on receiving water is reduced, ecological and health problems caused by excessive hardness of the water are avoided, and the harsh requirements of industrial production and environmental protection on soft water are met.

The present invention relates to a device for preventing the formation of lime scales in a water pipeline (11) comprising a main body (4) with an inlet (2) and an outlet (3), and an anti-scaling medium (5) configured to prevent the formation of lime scales, located within main body (4), between the inlet (2) and the outlet (3), comprising a galvanic cell, with at least one cathode element (7) and an anode sacrificial element (6), and a support medium (8) of the galvanic cell configured to be fixed to the main body (4); characterized in that the anode sacrificial element (6) is made of an alloy comprising zinc between 89.5 - 99.5% and aluminum between 0.5 and 10%.

The present invention discloses a zero-emission process for the coordinated treatment of multi-source wastewater in a steel mill. This process features zero-emission selective separation of desalted water and coal gas condensate from a softening station, recovery of natronasite from cold-rolling rinsing wastewater using high-pressure nanofiltration concentrate, coordinated treatment of high-pressure reverse osmosis concentrate with desulfurization wastewater and high-salt solid waste ash, and low-cost treatment of ammonia and nitrogen. The coordinated treatment of multi-source wastewater and high-salt solid waste ash significantly reduces the pollutant content in ash washing water, thereby reducing subsequent wastewater treatment costs and wastewater usage, significantly lowering the disposal costs of solid waste and wastewater, and achieving internal consumption and zero-emission of multi-source wastewater.

To provide a method and an apparatus for producing a sodium hypochlorite solution on-site at a high efficiency and at the initial cost and suppressing operating cost without any problems about impurities derived from raw material water and raw salt. A method of producing a sodium hypochlorite solution on-site in the vicinity of a physical plant where a sodium hypochlorite solution is used. In production of a sodium hypochlorite solution by feeding secondary salt water, in an electrolyzer comparted into an anode chamber and a cathode chamber with an ion-exchange membrane, to the anode chamber and allowing components in the anode chamber and the cathode chamber after electrolysis to react in a reaction tank, there are included respective steps of treating raw material water A with a cation-exchange resin B to generate purified water 5, dissolving raw salt D in the purified water to generate primary salt water E, performing an examination for confirming the presence or absence of a precipitate or suspended solid in the primary salt water, and directly performing chelating in the case of no precipitate or suspended solid contained in the primary salt water, or performing chelating after addition of an acid component for dissolution of the precipitate or suspended solid in the case of the precipitate or suspended solid contained therein, to generate secondary salt water 4.

The invention relates to a high-salt scale inhibitor suitable for high-salt wastewater multi-evaporation working conditions and a use method, the scale inhibitor is composed of polyaspartic acid, polyepoxysuccinic acid, hydroxyethylidene diphosphonic acid, polymaleic anhydride, a composite quaternary ammonium salt, 2-phospho-1, 2, 4-tricarboxylic acid butane, a pH regulator, sodium persulfate, an antirust agent and a preservative, and has excellent scale inhibition performance. By using the scale inhibitor, the heat transfer efficiency of an evaporator can be remarkably improved, the service life of equipment can be prolonged, and the scale inhibitor is suitable for relieving aggregation and caking of salt on the wall surface of a quench tower under the condition of quench back-injection evaporation of high-salt wastewater; the evaporator is also suitable for relieving attached deposition of salt on the inner wall surface of the evaporator under the condition of multi-effect, double-effect and single-effect evaporation of high-salt wastewater; the scale inhibitor has excellent scale inhibition performance, can effectively prevent high-salinity wastewater from forming a scale layer under a multi-evaporation working condition, is simple and easy to understand in use method, is convenient to operate, and is suitable for a large-scale high-salinity wastewater treatment process.

The invention discloses an automatic dosing control method and system based on fouling thermal resistance, and belongs to the technical field of circulating water treatment.The method comprises the following steps that historical data of circulating water and water quality parameters monitored in real time are obtained, training historical data and water quality parameters by utilizing regression, SVM (Support Vector Machine) or a decision tree computer learning model, and calculating a fouling thermal resistance value in real time; according to the relation between the fouling thermal resistance value and the preset thermal resistance critical value, chemical adding is automatically controlled and adjusted, chemical concentration changes and fouling thermal resistance value changes are monitored in real time, a chemical adding strategy is controlled and adjusted in real time, and a water quality and strategy report is generated. According to the automatic dosing control method and system based on the fouling thermal resistance, intelligent management of circulating water can be achieved, the water treatment efficiency and the operation safety of equipment are improved, and remarkable economic and social benefits are achieved.

The utility model relates to a marine fuel cell system with both power generation and water generation functions and a ship, the system comprises a hydrogen energy fuel cell subsystem, a ship power device, a water storage device, a purification device, a dosing tank, a disinfection device and two water pipelines, electricity and water generated by the hydrogen energy fuel cell subsystem are utilized, and the water pipelines are used for water supply. Electric energy is supplied to a power system of the boat, and water is treated by the purification device, the dosing tank and the disinfection device and is distributed to different water pipelines so as to meet the water quality requirements of different purposes on the boat; by integrating the power generation function and the water generation function, a traditional water generator and a diesel generator are replaced, the operation and maintenance cost is reduced, meanwhile, the energy utilization efficiency is improved, dependence on traditional energy and environmental pollution are reduced, the self-sufficiency of the boat is enhanced, and economical efficiency and environmental protection performance are improved.

The invention belongs to the technical field of preparation of nano fluorescent materials, and particularly relates to a preparation method and application of a polymer-based sulfur quantum dot water treatment agent. The preparation method comprises the following steps: (1) adding sulfur powder and a dispersing agent into an alkaline solution to prepare a mixed solution; (2) putting the mixed solution obtained in the step (1) into a water bath at 70-90 DEG C, heating, stirring and reacting for 15-20 minutes, and then adding an etching solvent; and (3) continuously reacting for 5-6 hours until the reaction is finished, adding the etching solvent again, and keeping the temperature for 0.5-1 hour to obtain a brownish red solution which is the sulfur quantum dot water treatment agent. The preparation method of the polymer-based sulfur quantum dot water treatment agent has the advantages of simple process, short preparation time, mild reaction conditions, low energy consumption, low cost and the like, and the prepared fluorescent sulfur quantum dot water treatment agent is simple in component and good in water solubility, can be used for inhibiting mineral scales and bacteria in industrial water, and has good application prospects. The concentration of the water treatment agent is monitored and controlled on line, and industrial production and market application prospects are achieved.

The purpose of the present invention is to provide a method for selecting a chemical agent for scale removal use which is suitable for scales and a base material. Provided is a method for selecting a chemical agent for scale removal use, the method comprising: a step for obtaining a coordinate A of an inherent physical value based on a Hansen solubility parameter for the whole of a target scale; a step for obtaining a coordinate B of an inherent physical value based on a Hansen solubility parameter for a base material-side surface of the target scale; a step for obtaining a coordinate C of an inherent physical value based on a Hansen solubility parameter for a target base material; a step for selecting a penetrating agent having a coordinate D of an inherent physical value based on a Hansen solubility parameter, on the basis of an interaction radius Ra of the target scale which is centered on the coordinate A; a step for selecting a peeling agent having a coordinate E of an inherent physical value based on a Hansen solubility parameter, on the basis of the positional relationship between the coordinate B and the coordinate C; and a step for selecting an inducing agent having a coordinate F of an inherent physical value based on a Hansen solubility parameter, on the basis of the positional relationship between the coordinate D and the coordinate E.

The invention relates to the field of wastewater treatment, in particular to a recovery treatment method of lithium iron phosphate cleaning wastewater. The invention relates to a method for recycling lithium iron phosphate cleaning wastewater. Comprising a phosphorus, iron and manganese removal unit, a first sedimentation tank, a coagulation unit, a second sedimentation tank, a chemical softening unit, a third sedimentation tank, a pH regulating tank, an immersed ultrafiltration membrane unit, an ultrafiltration water producing tank, a primary reverse osmosis unit, a concentrated water reverse osmosis unit, a primary reverse osmosis water producing tank, a secondary reverse osmosis unit and a secondary reverse osmosis water producing tank.

The invention relates to an automatic acid adding control method for circulating cooling water. The method comprises the following steps that S1, an online monitoring meter is installed in a circulating cooling water system; s2, monitoring data of the online monitoring meter, judging whether abnormity exists or not, if not, executing the step S3, and if not, executing the step S4; s3, processing the data of the online monitoring meter, and controlling the acid pump according to the processed data; and S4, performing decision logic judgment processing on the abnormal data. Compared with the prior art, the automatic acid adding device has the advantages that automatic acid adding and accurate control of the circulating water system are achieved, manual operation of operators is comprehensively replaced, and equipment damage and pipeline corrosion caused by out-of-control acid adding can be effectively prevented.

The underground water collecting and draining system comprises a collecting well, the length direction of first permeation pipes is horizontal, and multiple sets of first permeation pipes are arranged in the circumferential direction of the collecting well at intervals; the length direction of the second permeation pipes is horizontal and multiple groups of second permeation pipes are arranged at intervals along the circumferential direction of the collecting well; one ends of the first permeation pipes and the second permeation pipes are communicated with the collecting well; a central pipe is vertically arranged in a collecting well, the end, extending out of an upper end pipe opening of the collecting well, of the central pipe is communicated with a pump, a pushing piston is arranged on the inner wall of the collecting well, and a driving mechanism drives the pushing piston to reciprocate in the height direction of the collecting well. According to the water collection system, the cleaning liquid can be pushed into the first permeation pipe and the second permeation pipe, and then the first permeation pipe and the second permeation pipe can be backwashed, so that the water collection system can effectively collect and pump out water flow below the basement bottom plate, the problem that the bottom plate floats upwards due to the water flow below the basement bottom plate is solved, and blockage of the permeation pipes can be avoided.

The utility model discloses a slow-release scale inhibition pipe which comprises a filter element and scale inhibition pipe bodies, a plurality of scale inhibition pipe bodies are arranged in the filter element, and scale inhibitors capable of being slowly released are contained in the scale inhibition pipe bodies. In the slow-release scale inhibition pipe provided by the utility model, the scale inhibition pipe body is formed by sintering the ultra-high molecular weight PE and the scale inhibitor, and the scale inhibitor is wrapped in the ultra-high molecular weight PE, so that the scale inhibitor can be continuously released outwards and cannot be quickly released, the purpose of continuously inhibiting scale is achieved, the service life of the scale inhibition pipe body is prolonged, the scale inhibitor has no influence on water quality, and the service life of the scale inhibition pipe body is prolonged. Meanwhile, by designing the detachable sewage discharge plug, impurities between the scale inhibition pipe body and the inner wall of the filter element can be quickly cleaned after the sewage discharge plug is directly detached and the scale inhibition pipe body is pulled out, and the filter element is convenient and efficient to operate, simple in overall structure, low in cost and suitable for industrial popularization and application.

The invention relates to the technical field of water treatment, and discloses a reclaimed water reuse treatment process suitable for island high-chlorine tail water, which comprises the following steps: when the real-time chloride ion concentration value is not higher than the chloride ion concentration threshold value, introducing the pretreated water into a low-salinity treatment path, and carrying out first desalination treatment by adopting a capacitive deionization technology; and when the real-time chloride ion concentration value is higher than the chloride ion concentration threshold value, guiding the pretreated water into a high-salinity treatment path, and carrying out second desalination treatment by adopting a reverse osmosis technology. A parallel double-path deep desalination framework is constructed, an intelligent control system guides water flow into an MCD I path or an LPRO path, and frequent switching of the system at a critical point is avoided by setting a hysteresis interval, so that a treatment path with the lowest instantaneous operation cost is automatically selected according to real-time water quality, energy consumption optimization in a full working condition range is realized, and the energy consumption is reduced. And long-term stable and efficient operation of the system is ensured.

An automated system to monitor and maintain the water quality in the Technology Cooling System of a liquid cooling system for computer servers. The ACQ system includes a side stream flow system with banks of chemical sensors, digital video recording, PLC control systems, chemical addition tanks, valves, injection manifold, chemical verification of additive methods, injection manifolds, filters, and alert systems. Water is monitored in the flow loop with sensors to establish a baseline chemical profile. Changes in water chemistry or at periodic intervals trigger an automatic adjustment of water chemistry with various chemicals held on the system in tanks. Confirmation of the injection of chemicals is accomplished with gravimetric methods and measured chemical change to the system. Deviations from baseline chemical characteristics can trigger injections of chemicals depending on the specific variation.

A process cooling water (PCW) system and method for an iron or steelmaking application, the PCW system and method including: sampling a plurality of characteristics of PCW using a plurality of sensors; calculating one or more of Langelier Saturation Index (LSI) and Ryznar Stability Index (RSI) based on the plurality of characteristics using a LSI / RSI measurement unit coupled to the plurality of sensors; and injecting one or more anti-scalant chemicals into the PCW responsive to the calculated one or more of the LSI and the RSI in real time using an anti-scalant injection system to thereby control scale formation in the PCW.

A geothermal power generation system according to one embodiment of the present invention comprises: a gas-liquid separator; a first pipe; a first valve that opens and closes the flow path of the first pipe; a second pipe; an analysis device; a control device that performs control for determining at least one chemical agent from among a plurality of chemical agent candidates on the basis of the result of analysis performed by the analysis device, and for supplying the chemical agent; a chemical agent supply port which is provided to the first pipe and through which the chemical agent is supplied; a third pipe that branches off the second pipe; a chemical agent recovery line that branches off the second pipe and is connected to the second pipe; a waste liquid recovery part, a scale separation part, a first chemical agent recovery part, an impurity separation part, a second chemical agent recovery part, a chemical agent purification part, and a regenerated chemical agent tank, which are provided in midcourse of the chemical agent recovery line sequentially from the upstream side; and a waste liquid adjustment device. The waste liquid adjustment device is connected to the scale separation part, the impurity separation part, and the chemical agent purification part.