TW201731772A - Method for treating high concentration of hydrofluoric acid - Google Patents

Method for treating high concentration of hydrofluoric acid Download PDF

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TW201731772A
TW201731772A TW106104523A TW106104523A TW201731772A TW 201731772 A TW201731772 A TW 201731772A TW 106104523 A TW106104523 A TW 106104523A TW 106104523 A TW106104523 A TW 106104523A TW 201731772 A TW201731772 A TW 201731772A
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hydrofluoric acid
solid
acid waste
water
reaction chamber
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陳時全
宋若山
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昆山明寬環保節能科技有限公司
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/20—Halides
    • C01F11/22—Fluorides
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/12—Halogens or halogen-containing compounds
    • C02F2101/14—Fluorine or fluorine-containing compounds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency

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  • Water Supply & Treatment (AREA)
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  • Removal Of Specific Substances (AREA)

Abstract

The present invention relates to a method for treating a high concentration of hydrofluoric acid, comprising steps of injecting a reaction carrier into a reaction chamber of a device for purification and treatment of hydrofluoric acid waste, jetting out of hydrofluoric acid waste as concurrently as adding Ca(OH)2 to the reaction chamber to be mixed with the reaction carrier for obtainment of a mixed solution containing a solid deposition of CaF2 and water, transferring the missed solution into a solid-liquid separation device to separate the solid deposition of CaF2 from the mixed solution, solely storing the solid deposition of CaF2 and allowing the water separated from the mixed solution to flow back to the reaction chamber serving as the reaction carrier again for recycling purposes. In this case, this invention has a simple technology and enables to be manipulated well, so as to effectively improve the efficiency of purifying a high concentration of hydrofluoric acid waste, increase resource recycling rates, avoid damages resulted from the high concentration of hydrofluoric acid waste to devices and operators, as well as further effectively avoid pipe clogging incurred by conventional methods for treating a high concentration of hydrofluoric acid waste. Besides, this invention also significantly promotes the efficiency and safety in treating and purifying the high concentration of hydrofluoric acid waste and considerably reduces treatment costs.

Description

高濃度氫氟酸處理方法High concentration hydrofluoric acid treatment method

本發明係有關於一種高濃度氫氟酸處理方法，屬氟化氫淨化處理技術領域。The invention relates to a high concentration hydrofluoric acid treatment method, belonging to the technical field of hydrogen fluoride purification treatment.

氫氟酸(HF)是氟化氫氣體的水溶液，無色，有刺激性氣味，具有強烈的腐蝕性，是用氟化氫溶於水而得。它也可用來薄化、蝕刻玻璃，去矽表面的氧化物，是光伏、太陽能行業製程中主要化工原料；氫氟酸在薄化、蝕刻完之後，含有其他污染物，不適合生產回用，從而易對環境造成嚴重的污染，並對生產設備及人員安全構成威脅，針對這一問題，當前主要是採用氫氧化鈣Ca(OH)2 作為絮凝劑對高濃度氟化氫污染物進行淨化處理，雖然可有效的將氟化氫污染物淨化，但在淨化處理過程中，會產生大量的熱量和固體沉積物，從而一方面導致淨化處理設備受到侵蝕現象嚴重，造成淨化設備使用壽命較短，另一方面大量的固體沉積物易造成淨化系統的管路堵塞，嚴重影響淨化作業的順利開展，並易導致污染物洩漏現象發生，嚴重威脅了氟化氫污染物淨化處理作業的工作效率和安全性。Hydrofluoric acid (HF) is an aqueous solution of hydrogen fluoride gas, which is colorless, has a pungent odor, and is highly corrosive. It is obtained by dissolving hydrogen fluoride in water. It can also be used to thinen and etch glass to remove oxides on the surface. It is the main chemical raw material in the process of photovoltaic and solar energy industry. After thinning and etching, hydrofluoric acid contains other pollutants, which is not suitable for production reuse. It is easy to cause serious pollution to the environment and poses a threat to the safety of production equipment and personnel. For this problem, calcium hydroxide Ca(OH) 2 is currently used as a flocculant to purify high-concentration hydrogen fluoride pollutants, although Effectively purify the hydrogen fluoride pollutants, but in the purification process, a large amount of heat and solid deposits are generated, which on the one hand leads to serious erosion of the purification treatment equipment, resulting in a short service life of the purification equipment, and on the other hand, a large number of Solid deposits are likely to cause blockage of the pipeline of the purification system, which seriously affects the smooth development of the purification operation, and easily leads to the occurrence of pollutant leakage, which seriously threatens the work efficiency and safety of the purification treatment of the hydrogen fluoride pollutants.

本發明的目的就在於克服上述不足，提供一種高濃度氫氟酸處理方法。The object of the present invention is to overcome the above deficiencies and to provide a high concentration hydrofluoric acid treatment method.

為實現上述目的，本發明是通過以下技術方案來實現：To achieve the above object, the present invention is achieved by the following technical solutions:

—種高濃度氫氟酸處理方法，其特徵在於：所述的高濃度氫氟酸處理方法包括以下步驟：A high concentration hydrofluoric acid treatment method, characterized in that the high concentration hydrofluoric acid treatment method comprises the following steps:

第一步驟，注入反應載體，根據氫氟酸廢棄物淨化處理設備的容量，在淨化處理反應腔內注入水做為淨化處理基礎載體，保持水位恆定；In the first step, the reaction carrier is injected, and according to the capacity of the hydrofluoric acid waste purification treatment device, water is injected into the purification treatment reaction chamber as a base for purification treatment, and the water level is kept constant;

第二步驟，高濃度氫氟酸淨化，在完成第一步後，將高濃度氫氟酸廢棄物通過射流方式引入到氫氟酸廢棄物淨化處理設備的反應腔內，並根據高濃度氫氟酸廢棄物的流量按比例同時向氫氟酸廢棄物淨化處理設備的反應腔內添加進入氫氧化鈣(Ca(OH)2 )反應物，並使高濃度氫氟酸廢棄物和Ca(OH)2 反應物與做為處理基礎載體的水充分混合並反應，將經過反應後產生的氟化鈣(CaF2 )固體沉積物、水份及做為處理基礎載體的水構成的混合液通過管路輸送到固液分離設備處，同時將反應時產生的熱量通過熱交換器進行回收，並在此過程中，同時向氫氟酸廢棄物淨化處理設備的反應腔內添加水保持淨化處理基礎載體的水位恆定；The second step, high-concentration hydrofluoric acid purification, after the completion of the first step, the high-concentration hydrofluoric acid waste is introduced into the reaction chamber of the hydrofluoric acid waste purification treatment device by a jet method, and according to the high concentration of hydrogen fluoride The flow rate of the acid waste is simultaneously added to the reaction chamber of the hydrofluoric acid waste purification treatment device to enter the calcium hydroxide (Ca(OH) 2 ) reactant, and the high concentration hydrofluoric acid waste and Ca(OH) 2 The reactant is thoroughly mixed and reacted with water as a base carrier for treatment, and a mixture of calcium fluoride (CaF 2 ) solid deposit, water and water as a base carrier for the reaction is passed through the pipeline. It is transported to the solid-liquid separation device, and the heat generated during the reaction is recovered through the heat exchanger, and in the process, water is added to the reaction chamber of the hydrofluoric acid waste purification treatment device to maintain the purification of the base carrier. Constant water level;

第三步驟，固液分離，將經過第二步驟得到的混合液通過固液分離裝置處，將混合液中的CaF2 固體沉積物與水體進行分離，並對分離後的水體中的F－ 離子濃度及水體PH值進行檢測，並將水體中的F－ 離子濃度及水體PH值通過藥劑調節至達標水平；The third step, solid-liquid separation, passes the mixed liquid obtained in the second step through the solid-liquid separation device, separates the CaF 2 solid deposit in the mixed liquid from the water body, and separates the F - ion in the separated water body. The concentration and the pH value of the water body are detected, and the F - ion concentration in the water body and the pH value of the water body are adjusted to the standard level by the medicament;

第四步驟，回收利用，將經第三步驟固液分離後得到的CaF2 固體沉積物單獨存放，同時將固液分離後得到的水體通過迴圈管路做為淨化處理基礎載體添加到氫氟酸廢棄物淨化處理設備的反應腔內再次利用。The fourth step is recycling, and the CaF 2 solid deposit obtained by the solid-liquid separation in the third step is separately stored, and the water body obtained by the solid-liquid separation is added to the hydrogen fluoride through the loop pipe as a base for purification treatment. The acid waste purification treatment equipment is reused in the reaction chamber.

進一步的，所述的第一步驟中水水位為淨化處理反應腔有效容積高度的1/4－1/2。Further, in the first step, the water level is 1/4-1/2 of the effective volume height of the purification treatment reaction chamber.

進一步的，所述的第二步驟中混合液引入到固液分離設備中在管道中流速不低於3米/秒，溫度不大於30°C。Further, in the second step, the mixed liquid is introduced into the solid-liquid separation device, and the flow rate in the pipeline is not less than 3 m/sec, and the temperature is not more than 30 °C.

本發明工藝簡單，操控性能好，一方面可有效的提高高濃度氫氟酸廢棄物的淨化作業效率、資源綜合回收利用率，另一方面可有效的避免高濃度氫氟酸廢棄物對操作人員人體及設備造成的危害，淨化作業的安全性和設備的使用壽命，同時還可有效的克服傳統氫氟酸廢棄物處理過程中易出線的管道堵塞現象，從而極大的提高了高濃度氫氟酸廢棄物的淨化處理作業效率和安全性，並有效的降低了處理成本。The invention has simple process and good handling performance, and can effectively improve the purification operation efficiency and comprehensive resource utilization rate of the high-concentration hydrofluoric acid waste on the one hand, and can effectively avoid the high-concentration hydrofluoric acid waste to the operator on the other hand. The harm caused by the human body and equipment, the safety of the purification operation and the service life of the equipment, and also effectively overcome the clogging phenomenon of the easy-out pipeline during the treatment of the traditional hydrofluoric acid waste, thereby greatly improving the high concentration of hydrogen fluoride. Acid waste purification treatment efficiency and safety, and effectively reduce processing costs.

為令本發明所運用之技術內容、發明目的及其達成之功效有更完整且清楚的揭露，茲於下詳細說明之：For a more complete and clear disclosure of the technical content, the purpose of the invention and the effects achieved by the present invention, it is explained in detail below:

＜實施例1＞<Example 1>

如第一圖所示的一種高濃度氫氟酸處理方法，其特徵在於：所述的高濃度氫氟酸處理方法包括以下步驟：A high-concentration hydrofluoric acid treatment method as shown in the first figure, characterized in that the high-concentration hydrofluoric acid treatment method comprises the following steps:

第一步驟，注入反應載體，根據氫氟酸廢棄物淨化處理設備的容量，在淨化處理反應腔內注入水做為淨化處理基礎載體，且水位與淨化處理反應腔高度的1/3位置平齊。In the first step, the reaction carrier is injected, and according to the capacity of the hydrofluoric acid waste purification treatment device, water is injected into the purification treatment reaction chamber as a base carrier for purification treatment, and the water level is flush with the 1/3 position of the height of the purification treatment reaction chamber. .

第二步驟，高濃度氫氟酸淨化，在完成第一步驟後，將高濃度氫氟酸廢棄物通過射流方式引入到氫氟酸廢棄物淨化處理設備的反應腔內，流速為5m/s，並根據高濃度氫氟酸廢棄物的流量按比例同時向氫氟酸廢棄物淨化處理設備的反應腔內添加進入Ca(OH)2 反應物，並使高濃度氫氟酸廢棄物和Ca(OH)2 反應物與做為處理基礎載體的水充分混合並反應，將經過反應後產生的CaF2 固體沉積物、水份及做為處理基礎載體的水構成的混合液通過管路輸送到固液分離設備處，且混合液流速為3m/s，溫度為25°C，同時將反應時產生的熱量通過熱交換器進行回收，並在此過程中，同時向氫氟酸廢棄物淨化處理設備的反應腔內添加水保持淨化處理基礎載體的水位恆定；In the second step, the high-concentration hydrofluoric acid is purified. After the first step is completed, the high-concentration hydrofluoric acid waste is introduced into the reaction chamber of the hydrofluoric acid waste purification treatment device by a jet method, and the flow rate is 5 m/s. According to the flow rate of the high-concentration hydrofluoric acid waste, the Ca(OH) 2 reactant is added into the reaction chamber of the hydrofluoric acid waste purification treatment equipment in proportion, and the high-concentration hydrofluoric acid waste and Ca (OH) are added. 2 The reactant is thoroughly mixed and reacted with water as a base carrier for treatment, and a mixture of CaF 2 solid deposit, water and water as a base carrier for the reaction is transferred to the solid solution through the pipeline. Separation equipment, and the mixed liquid flow rate is 3m / s, the temperature is 25 ° C, while the heat generated during the reaction is recovered through the heat exchanger, and in the process, simultaneously to the hydrofluoric acid waste purification treatment equipment The water in the reaction chamber is added to keep the water level of the base carrier of the purification treatment constant;

第三步驟，固液分離，將經過第二步驟得到的混合液通過固液分離裝置處，將混合液中的CaF2 固體沉積物與水體進行分離，並對分離後的水體中的F－ 離子濃度及水體PH值進行檢測，並將水體中的F－ 離子濃度及水體PH值通過藥劑調節至達標水平；The third step, solid-liquid separation, passes the mixed liquid obtained in the second step through the solid-liquid separation device, separates the CaF 2 solid deposit in the mixed liquid from the water body, and separates the F - ion in the separated water body. The concentration and the pH value of the water body are detected, and the F - ion concentration in the water body and the pH value of the water body are adjusted to the standard level by the medicament;

第四步驟，回收利用，將經第三步驟固液分離後得到的CaF2 固體沉積物單獨存放，同時將固液分離後得到的水體通過迴圈管路做為淨化處理基礎載體添加到氫氟酸廢棄物淨化處理設備的反應腔內再次利用。The fourth step is recycling, and the CaF 2 solid deposit obtained by the solid-liquid separation in the third step is separately stored, and the water body obtained by the solid-liquid separation is added to the hydrogen fluoride through the loop pipe as a base for purification treatment. The acid waste purification treatment equipment is reused in the reaction chamber.

＜實施例2＞<Example 2>

如第一圖所示的一種高濃度氫氟酸處理方法，其特徵在於：所述的高濃度氫氟酸處理方法包括以下步驟：A high-concentration hydrofluoric acid treatment method as shown in the first figure, characterized in that the high-concentration hydrofluoric acid treatment method comprises the following steps:

第一步驟，注入反應載體，根據氫氟酸廢棄物淨化處理設備的容量，在淨化處理反應腔內注入水做為淨化處理基礎載體，且水位與淨化處理反應腔高度的1/2位置平齊。In the first step, the reaction carrier is injected, and according to the capacity of the hydrofluoric acid waste purification treatment device, water is injected into the purification reaction chamber as a base carrier for purification treatment, and the water level is flush with the 1/2 position of the height of the purification treatment reaction chamber. .

第二步驟，高濃度氫氟酸淨化，在完成第一步後，將高濃度氫氟酸廢棄物通過射流方式引入到氫氟酸廢棄物淨化處理設備的反應腔內，流速為10 m/s，並根據高濃度氫氟酸廢棄物的流量按比例同時向氫氟酸廢棄物淨化處理設備的反應腔內添加進入Ca(OH)2 反應物，並使高濃度氫氟酸廢棄物和Ca(OH)2 反應物與做為處理基礎載體的水充分混合並反應，將經過反應後產生的CaF2 固體沉積物、水份及做為處理基礎載體的水構成的混合液通過管路輸送到固液分離設備處，且混合液流速為5m/s，溫度為30°C，同時將反應時產生的熱量通過熱交換器進行回收，並在此過程中，同時向氫氟酸廢棄物淨化處理設備的反應腔內添加水保持淨化處理基礎載體的水位恆定；The second step, high-concentration hydrofluoric acid purification, after the completion of the first step, the high-concentration hydrofluoric acid waste is introduced into the reaction chamber of the hydrofluoric acid waste purification treatment device by a jet flow at a flow rate of 10 m/s. And according to the flow rate of the high-concentration hydrofluoric acid waste, the Ca(OH) 2 reactant is added to the reaction chamber of the hydrofluoric acid waste purification processing device in proportion, and the high-concentration hydrofluoric acid waste and Ca are added. The OH) 2 reactant is thoroughly mixed and reacted with water as a base carrier for treatment, and a mixture of CaF 2 solid deposits, water, and water as a base carrier for the reaction is transported to the solid through a pipeline. At the liquid separation device, the mixed solution has a flow rate of 5 m/s and a temperature of 30 ° C, and the heat generated during the reaction is recovered through the heat exchanger, and in the process, the hydrofluoric acid waste purification treatment device is simultaneously The water in the reaction chamber is added to keep the water level of the base carrier of the purification treatment constant;

第三步驟，固液分離，將經過第二步得到的混合液通過固液分離裝置處，將混合液中的CaF2 固體沉積物與水體進行分離，並對分離後的水體中的F－ 離子濃度及水體PH值進行檢測，並將水體中的F－ 離子濃度及水體PH值通過藥劑調節至達標水平；The third step is solid-liquid separation, and the mixed liquid obtained in the second step is passed through a solid-liquid separation device to separate the CaF 2 solid deposit in the mixed liquid from the water body, and the F - ion in the separated water body The concentration and the pH value of the water body are detected, and the F - ion concentration in the water body and the pH value of the water body are adjusted to the standard level by the medicament;

第四步驟，回收利用，將經第三步驟固液分離後得到的CaF2 固體沉積物單獨存放，同時將固液分離後得到的水體通過迴圈管路做為淨化處理基礎載體添加到氫氟酸廢棄物淨化處理設備的反應腔內再次利用。The fourth step is recycling, and the CaF 2 solid deposit obtained by the solid-liquid separation in the third step is separately stored, and the water body obtained by the solid-liquid separation is added to the hydrogen fluoride through the loop pipe as a base for purification treatment. The acid waste purification treatment equipment is reused in the reaction chamber.

本發明工藝簡單，操控性能好，一方面可有效的提高高濃度氫氟酸廢棄物的淨化作業效率、資源綜合回收利用率，另一方面可有效的避免高濃度氫氟酸廢棄物對操作人員人體及設備造成的危害，淨化作業的安全性和設備的使用壽命，同時還可有效的克服傳統氫氟酸廢棄物處理過程中易出線的管道堵塞現象，從而極大的提高了高濃度氫氟酸廢棄物的淨化處理作業效率和安全性，並有效的降低了處理成本。The invention has simple process and good handling performance, and can effectively improve the purification operation efficiency and comprehensive resource utilization rate of the high-concentration hydrofluoric acid waste on the one hand, and can effectively avoid the high-concentration hydrofluoric acid waste to the operator on the other hand. The harm caused by the human body and equipment, the safety of the purification operation and the service life of the equipment, and also effectively overcome the clogging phenomenon of the easy-out pipeline during the treatment of the traditional hydrofluoric acid waste, thereby greatly improving the high concentration of hydrogen fluoride. Acid waste purification treatment efficiency and safety, and effectively reduce processing costs.

以上顯示和描述了本發明的基本原理和主要特徵和本發明的優點。本行業的技術人員應該瞭解，本發明不受上述實施例的限制，上述實施例和說明書中描述的只是說明本發明的原理，在不脫離本發明精神和範圍的前提下，本發明還會有各種變化和改進，這些變化和改進都落入要求保護的本發明範圍內。本發明要求保護範圍由所附的權利要求書及其等效物界定。The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. It should be understood by those skilled in the art that the present invention is not limited by the foregoing embodiments, and that the present invention is only described in the foregoing description and the description of the present invention, without departing from the spirit and scope of the invention. Various changes and modifications are intended to be included within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and their equivalents.

綜上所述，本發明實施例確能達到所預期之使用功效，又其所揭露之具體技術手段，不僅未曾見諸於同類產品中，亦未曾公開於申請前，誠已完全符合專利法之規定與要求，爰依法提出發明專利之申請，懇請惠予審查，並賜准專利，則實感德便。In summary, the embodiments of the present invention can achieve the expected use efficiency, and the specific technical means disclosed therein have not been seen in similar products, nor have they been disclosed before the application, and have completely complied with the patent law. The regulations and requirements, the application for invention patents in accordance with the law, and the application for review, and the grant of patents, are truly sensible.

無no

第一圖：本發明的步驟流程示意圖First figure: schematic diagram of the process flow of the present invention

Claims (3)

一種高濃度氫氟酸處理方法，其特徵在於：所述的高濃度氫氟酸處理方法包括以下步驟： 第一步驟，注入反應載體，根據氫氟酸廢棄物淨化處理設備的容量，在淨化處理反應腔內注入水做為淨化處理基礎載體，保持水位恆定； 第二步驟，高濃度氫氟酸淨化，在完成第一步驟後，將高濃度氫氟酸廢棄物通過射流方式引入到氫氟酸廢棄物淨化處理設備的反應腔內，並根據高濃度氫氟酸廢棄物的流量按比例同時向氫氟酸廢棄物淨化處理設備的反應腔內添加進入Ca(OH)2 反應物，並使高濃度氫氟酸廢棄物和Ca(OH)2 反應物與做為處理基礎載體的水充分混合並反應，將經過反應後產生的CaF2 固體沉積物、水份及做為處理基礎載體的水構成的混合液通過管路輸送到固液分離設備處，同時將反應時產生的熱量通過熱交換器進行回收，並在此過程中，同時向氫氟酸廢棄物淨化處理設備的反應腔內添加水保持淨化處理基礎載體的水位恆定； 第三步驟，固液分離，將經過第二步驟得到的混合液通過固液分離裝置處，將混合液中的CaF2 固體沉積物與水體進行分離，並對分離後的水體中的F－ 離子濃度及水體PH值進行檢測，並將水體中的F－ 離子濃度及水體PH值通過藥劑調節至達標水平； 第四步驟，回收利用，將經第三步固液分離後得到的CaF2 固體沉積物單獨存放，同時將固液分離後得到的水體通過迴圈管路做為淨化處理基礎載體添加到氫氟酸廢棄物淨化處理設備的反應腔內再次利用。A high-concentration hydrofluoric acid treatment method, characterized in that the high-concentration hydrofluoric acid treatment method comprises the following steps: First step, injecting a reaction carrier, according to the capacity of the hydrofluoric acid waste purification treatment equipment, in the purification treatment Injecting water into the reaction chamber as the base carrier for purification treatment, keeping the water level constant; The second step, purifying the high concentration hydrofluoric acid, after the first step is completed, introducing the high concentration hydrofluoric acid waste into the hydrofluoric acid by jet flow. In the reaction chamber of the waste purification treatment device, the Ca(OH) 2 reactant is added to the reaction chamber of the hydrofluoric acid waste purification treatment device in proportion according to the flow rate of the high-concentration hydrofluoric acid waste, and is made high. The concentration of hydrofluoric acid waste and Ca(OH) 2 reactant are mixed and reacted with water as a base for treatment, and the CaF 2 solid deposit, water and the water used as the base carrier for the reaction are formed. The mixed liquid is transported to the solid-liquid separation equipment through the pipeline, and the heat generated during the reaction is recovered through the heat exchanger, and in the process, it is discarded to the hydrofluoric acid at the same time. The reaction chamber water purification device is added to maintain a constant level of purification treatment of the underlying support; a third step of solid-liquid separation step after the second mixture obtained by solid-liquid separation device at the solid mixture of CaF 2 The sediment is separated from the water body, and the F - ion concentration and the pH value of the water body in the separated water body are detected, and the F - ion concentration and the water body PH value in the water body are adjusted to reach the standard level by the medicament; Recycling, the CaF 2 solid deposit obtained by the third step of solid-liquid separation is separately stored, and the water body obtained by solid-liquid separation is added to the hydrofluoric acid waste purification through the loop pipeline as a base for purification treatment. The reaction chamber of the processing device is reused. 如申請專利範圍第1項所述的高濃度氫氟酸處理方法，其特徵在於：所述的第一步中水水位為淨化處理反應腔有效容積高度的1/4至1/2。The high-concentration hydrofluoric acid treatment method according to claim 1, wherein the water level in the first step is 1/4 to 1/2 of the effective volume height of the purification treatment reaction chamber. 如申請專利範圍第1項所述的高濃度氫氟酸處理方法，其特徵在於：所述的第二步中混合液引入到固液分離設備中在管道中流速不低於3米/秒，溫度不大於30°C。The method for treating a high-concentration hydrofluoric acid according to the first aspect of the invention is characterized in that: in the second step, the mixed liquid is introduced into the solid-liquid separation device, and the flow rate in the pipeline is not less than 3 m/sec. The temperature is not more than 30 °C.
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