技术领域technical field
本发明涉及空气净化领域，具体涉及一种去除空气中氡子体的方法。The invention relates to the field of air purification, in particular to a method for removing radon progeny in the air.
背景技术Background technique
氡(Rn)是由自然界中镭(Ra)衰变产生的一种无色、无味的放射性气体。Rn位于元素周期表第Ⅵ周期惰性气体族，原子序数为86。在标准状态下，氡的密度为9.96mg/cm3，是空气的7.7倍。氡是单原子气体，有很强的扩散能力和渗透力。建筑物中的氡主要来自地基的岩石和土壤，此外，还来自于某些建筑材料——如一些花岗石、石煤材料及工业废渣制成的建筑材料等和地下水。Radon (Rn) is a colorless, odorless radioactive gas produced by the decay of radium (Ra) in nature. Rn belongs to the inert gas group of period VI of the periodic table of elements, and its atomic number is 86. Under standard conditions, the density of radon is 9.96mg/cm3 , which is 7.7 times that of air. Radon is a monatomic gas with strong diffusion and penetration. The radon in the building mainly comes from the rock and soil of the foundation, in addition, it also comes from some building materials-such as some granite, stone coal materials and building materials made of industrial waste residues, etc., and groundwater.
科学研究已经发现，室内氡可以引起普通人群肺癌危险增加，氡已被国际癌症机构（IARC）列入室内重要致癌物质。Scientific research has found that indoor radon can increase the risk of lung cancer in the general population, and radon has been listed as an important indoor carcinogen by the International Agency for Cancer (IARC).
WHO采取了更严格的控制标准，将室内氡的控制限值由200 Bq/m3降低至100 Bq /m3，并建议各国关注氡的危害，采取措施降低室内氡暴露。有资料显示，我国肺癌发病率高，每年因氡污染导致的肺癌病例达50000例以上。因此，遏制肺癌发展，控制和治理各种环境诱发因素特别是对室内氡的危害的治理已刻不容缓。WHO has adopted stricter control standards, reducing the control limit of indoor radon from 200 Bq/m3 to 100 Bq/m3 , and suggested that countries pay attention to the hazards of radon and take measures to reduce indoor radon exposure. According to data, the incidence of lung cancer in my country is high, with more than 50,000 cases of lung cancer caused by radon pollution every year. Therefore, it is urgent to curb the development of lung cancer, control and control various environmental triggers, especially the harm to indoor radon.
空气中含有氡气和氡的衰变产物氡子体。氡气被人体吸入后大部分能被排出体外。氡子体为金属粒子，带有正电，吸入后很容易滞留沉积于呼吸道和肺部。氡子体衰变产生的α粒子能破坏或改变人体细胞中DNA的分子结构，导致不正常的细胞分裂，最终诱发肺癌。UNSCEAR提供的氡和氡子体的剂量转换因子分别是0.17和9.0nSv/(Bq h m-3)，也就是说吸入氡和氡子体后对人体产生的辐射剂量，只有2%来自氡，其余是氡子体的因素。可见，氡的危害主要是氡子体对人体造成的内照射，有效降低氡子体的浓度是解决氡污染的关键。The air contains radon gas and radon daughters, the decay products of radon. Most of the radon gas can be excreted from the body after being inhaled. Radon progeny are metal particles with positive charges, which are easy to stay and deposit in the respiratory tract and lungs after inhalation. The α-particles produced by the decay of radon daughters can destroy or change the molecular structure of DNA in human cells, leading to abnormal cell division and eventually lung cancer. The dose conversion factors of radon and radon progeny provided by UNSCEAR are 0.17 and 9.0nSv/(Bq h m-3 ), which means that only 2% of the radiation dose to the human body after inhaling radon and radon progeny comes from radon, and the rest Is the radon daughter factor. It can be seen that the hazard of radon is mainly the internal exposure of radon daughters to the human body, and effectively reducing the concentration of radon daughters is the key to solving radon pollution.
发明内容Contents of the invention
本发明的目的是提供一种去除空气中氡子体的方法，该方法将将带电的结合态和未结合态氡子体随着空气流经高压电场时，在库仑力的作用下，被极性相反的电极吸附的原理除去空气中的氡子体，并经多重阵列吸附，以实现净化空气的目的。The purpose of the present invention is to provide a method for removing radon progeny in the air, the method will be charged binding state and uncombined state radon progeny with the air flow through the high-voltage electric field, under the effect of Coulomb force, will be extremely The principle of opposite electrode adsorption removes radon progeny in the air, and is adsorbed by multiple arrays to achieve the purpose of purifying the air.
本发明的实现由以下技术方案完成：Realization of the present invention is accomplished by the following technical solutions:
一种去除空气中氡子体的方法，其特征在于：所述方法至少包括以下步骤：A method for removing radon daughters in the air, characterized in that: said method at least comprises the following steps:
(a) 通过风机的作用，将带电的结合态和未结合态氡子体随空气依次流经预设置的圆管式高压静电场及平板式高压静电场，使其被极性相反的的电极所吸附，以去除所述氡子体中的一部分；(a) Through the action of the fan, the charged bound and unbound radon daughters flow through the pre-set circular tube-type high-voltage electrostatic field and the flat-plate high-voltage electrostatic field sequentially with the air, so that they are charged by electrodes with opposite polarities. Adsorbed to remove a portion of the radon progeny;
（b）将经过步骤（a）后剩余的所述带电的结合态和未结合态氡子体随空气流经预设置的化纤过滤器，以去除剩余部分。(b) The charged bound state and unbound radon progeny remaining after step (a) flow through the pre-set chemical fiber filter along with the air to remove the remaining part.
所述步骤（a）中具有吸附功能的圆管式高压静电装置指的是：在高压的条件下，位于圆管中心部位的针状电极向圆管管壁高频放电，形成电晕层和正负电极，使得带有正电的的氡子体向静电场负极—圆管管壁快速运动，并被有效吸附。The circular tube-type high-voltage electrostatic device with adsorption function in the step (a) refers to: under high-voltage conditions, the needle-shaped electrode located in the center of the circular tube discharges to the wall of the circular tube at high frequency to form a corona layer and The positive and negative electrodes make the positively charged radon progeny move quickly to the negative electrode of the electrostatic field—the wall of the circular tube, and be effectively adsorbed.
所述步骤（a）中预设置的平板式高压静电场指的是：由若干平板电极组成的高压静电场，所述若干平板电极间相邻的两块平板电极极性相反，随气流经过圆管式高压静电场进入平板式高压静电场的带正电的氡子体进一步被平板式高压静电场的负极所吸附。The pre-set flat-plate high-voltage electrostatic field in the step (a) refers to a high-voltage electrostatic field composed of several flat-plate electrodes. The positively charged radon progeny entering the flat high-voltage electrostatic field from the tubular high-voltage electrostatic field is further adsorbed by the negative electrode of the flat high-voltage electrostatic field.
所述步骤（b）中过滤器采用的是粗效或中效的袋状化纤过滤网，所述袋状化纤过滤网的空隙大于所述未结合态氡子体的粒径。The filter used in the step (b) is a coarse-effect or medium-effect bag-shaped chemical fiber filter screen, and the gap of the bag-shaped chemical fiber filter screen is larger than the particle size of the unbound radon progeny.
将所述方法应用于中央空调系统的回风口内，与所述中央空调系统同步工作，在空气循环过程中，去除空气中氡子体。The method is applied in the air return port of the central air-conditioning system, works synchronously with the central air-conditioning system, and removes radon progeny in the air during the air circulation process.
将所述方法应用于具有风机的空气净化器内，与所述风机同步工作，通过所述风机的工作强制室内空气进行循环，在此过程中去除空气中氡子体。The method is applied in an air purifier with a fan, works synchronously with the fan, and the indoor air is forced to circulate through the work of the fan, and radon progeny in the air is removed during the process.
本发明的优点是：在空气循环的过程中，空气中的氡子体、可吸入颗粒物、烟尘及真菌、细菌等微生物被有效清除，达到净化空气的目的；使用方便，既可单独使用，也可以将其核心部分安装到中央空调系统的回风口内，与空调同步工作；工作安全可靠、操作简便、使用寿命长、清洗维修方便。不仅有利于减少氡子体污染，降低相关人员所受的辐射剂量，而且对细菌、真菌等微生物和可吸入颗粒物具有高效的杀灭与净化作用，有利于建筑物内部整体空气品质的提升与改善。The advantages of the present invention are: in the process of air circulation, microorganisms such as radon daughters, inhalable particles, smoke dust, fungi and bacteria in the air are effectively removed to achieve the purpose of purifying the air; it is easy to use and can be used alone or Its core part can be installed in the air return port of the central air-conditioning system and work synchronously with the air conditioner; it is safe and reliable in operation, easy to operate, long in service life, and easy to clean and maintain. Not only is it beneficial to reduce radon daughter pollution and reduce the radiation dose received by relevant personnel, but also has an efficient killing and purification effect on bacteria, fungi and other microorganisms and inhalable particulate matter, which is conducive to the improvement and improvement of the overall air quality inside the building .
单体净化除氡设备，在高浓度情况下，开机≥3小时，对结合态氡子体RnD去除效率80%-90%；对未结合态氡子体RnDu去除效率60%-80%；系统净化除氡设备开机5小时后，年有效剂量降低率可达70%-80%。对于刚超标的普通住宅，对于氡浓度刚超标的普通民用建筑，净化器运行期间RnD降低率92%-96%，RnDu降低率40%-50%，有效剂量降低率60%-76%，根据实测结果估算的年有效剂量在1.8-2.2mSv，均低于3mSv的剂量控制下限，并处于稳定状态。Single purification and radon removal equipment, in the case of high concentration, start ≥ 3 hours, the removal efficiency of the bound radon daughter RnD is 80%-90%; the removal efficiency of the unbound radon daughter RnDu is 60%-80%; the system Five hours after the purification and radon removal equipment is turned on, the annual effective dose reduction rate can reach 70%-80%. For ordinary residential buildings that have just exceeded the standard, and for ordinary civil buildings where the radon concentration has just exceeded the standard, the RnD reduction rate during the operation of the purifier is 92%-96%, the RnDu reduction rate is 40%-50%, and the effective dose reduction rate is 60%-76%. The annual effective dose estimated by the actual measurement results is 1.8-2.2mSv, which are all lower than the lower limit of dose control of 3mSv, and are in a stable state.
附图说明Description of drawings
图1是本发明所采用的装置俯视图；Fig. 1 is the device plan view that the present invention adopts;
图2是图1中圆管式高压静电装置主视图；Fig. 2 is a front view of the circular tube type high-voltage electrostatic device in Fig. 1;
图3是图2的侧视图；Fig. 3 is a side view of Fig. 2;
图4是本发明中圆管式高压静电电场分布情况；Fig. 4 is the distribution situation of circular tube type high-voltage electrostatic electric field in the present invention;
图5是图1中平板式高压静电装置主视图；Fig. 5 is a front view of the flat-plate high-voltage electrostatic device in Fig. 1;
图6是图5的侧视图；Fig. 6 is a side view of Fig. 5;
图7是图1中化纤过滤器主视图；Fig. 7 is a front view of the chemical fiber filter in Fig. 1;
图8是图7的侧视图；Fig. 8 is a side view of Fig. 7;
图9是本发明圆管式高压静电场与平板式高压静电场工作原理示意图；Fig. 9 is a schematic diagram of the working principle of the circular tube type high voltage electrostatic field and the flat plate type high voltage electrostatic field of the present invention;
图10是本发明对人防工程（地下室）中RnD、RnDu的去除率和降低E总的测试数据表；Fig. 10 is thetotal test data table of the present invention to the removal rate of RnD, RnDu in civil air defense engineering (basement) and reduces E;
图11是本发明对居民住宅中RnD、RnDu的去除率和降低E总的测试数据表。Fig. 11 is thetotal test data table of the present invention on the removal rate of RnD and RnDu in residential buildings and the reduction of E.
具体实施方式Detailed ways
以下结合附图通过实施例对本发明特征及其它相关特征作进一步详细说明，以便于同行业技术人员的理解：The features of the present invention and other related features will be further described in detail below in conjunction with the accompanying drawings through embodiments, so as to facilitate the understanding of those skilled in the art:
如图1-11所示，图中标记1-22分别为：化纤过滤器1、平板式高压静电装置2、圆管式高压静电装置3、电极针4、金属圆管5、金属板6、螺丝7、高压电缆8、绝缘柱9、电源插头10、导电支架11、高压电源12、绝缘框架13、进风口14、出风口15、绝缘板16、平板电极17、螺母18、导电柱19、金属隔套20、袋状化纤过滤网21、金属框架22。 As shown in Figure 1-11, the marks 1-22 in the figure are: chemical fiber filter 1, flat high-voltage electrostatic device 2, round tube high-voltage electrostatic device 3, electrode needle 4, metal round tube 5, metal plate 6, Screw 7, high-voltage cable 8, insulating column 9, power plug 10, conductive bracket 11, high-voltage power supply 12, insulating frame 13, air inlet 14, air outlet 15, insulating plate 16, flat electrode 17, nut 18, conductive column 19, Metal spacer 20, bag-shaped chemical fiber filter screen 21, metal frame 22. the
实施例：本实施例所采用的去除氡子体方法分为二个步骤：Embodiment: the method for removing radon progeny adopted in the present embodiment is divided into two steps:
1）通过风机的作用，使带有正电荷的氡子体随空气依次流经预设置的圆管式高压静电场及平板式高压静电电场，利用库仑力的作用，使得带有正电荷的氡子体被高压静电场的负电极所吸附，消除空气中的一部分氡子体。1) Through the action of the fan, the positively charged radon daughters flow through the pre-set circular tube type high-voltage electrostatic field and the flat plate type high-voltage electrostatic field in sequence with the air, and the effect of the Coulomb force is used to make the positively charged radon The daughter body is adsorbed by the negative electrode of the high-voltage electrostatic field, and a part of the radon daughter body in the air is eliminated.
2）经过第一道净化的空气中还残留有一部分氡子体，此时使其再经过一化纤过滤器，利用的原理是：当带电氡子体在气流的作用下以一定速度通过化纤过滤器时，由于摩擦力的作用使化纤过滤器迅速带上负电电荷，这些电荷的积累使带有正电电荷的氡子体吸附在过滤器表面。2) Some radon daughters remain in the air after the first purification, and then pass through a chemical fiber filter. The principle of use is: when the charged radon daughters pass through the chemical fiber filter at a certain speed under the action of the airflow When using the filter, the chemical fiber filter is quickly charged with negative charges due to the friction force, and the accumulation of these charges makes the positively charged radon progeny adsorb on the surface of the filter.
基于上述的方法，本实施例依托于一复合式高压静电装置以实现去除空气中氡子体的目的。Based on the above method, this embodiment relies on a composite high-voltage electrostatic device to achieve the purpose of removing radon daughters in the air.
如图1所示，本实施例采用的复合式高压静电装置由化纤过滤器1、平板式高压静电装置2、圆管式高压静电装置3依次阵列组成，图中箭头表示风的流经，即该阵列顺序应遵循风依次经过圆管式高压静电装置3、平板式高压静电装置2、化纤过滤器1以达到最好的使用效果，即最佳的去除氡子体效果。As shown in Figure 1, the composite high-voltage electrostatic device used in this embodiment is composed of a chemical fiber filter 1, a flat-plate high-voltage electrostatic device 2, and a circular tube-type high-voltage electrostatic device 3 in sequence. The arrows in the figure indicate the flow of wind, that is, The sequence of the array should follow the wind to pass through the tube-type high-voltage electrostatic device 3, the flat-plate high-voltage electrostatic device 2, and the chemical fiber filter 1 in order to achieve the best use effect, that is, the best effect of removing radon daughters.
如图2、3所示，本实施例的圆管式高压静电装置3由电极针4、金属圆管5、金属板6、导电支架11、绝缘框架13等组成。金属圆管2的空腔内为通风的风道，其两端分别为进风口14和出风口15。绝缘框架13为一个中空的半封闭箱型框架。绝缘框架13的中空侧面处固接有一金属板6，金属板6按照风口部位的形状大小设计，其面上蜂窝状嵌装设置若干金属圆管5。金属圆管5的进风口14管孔端面贯穿金属板6，其目的在于使得风能够顺利穿过金属圆管5。若干电极针4固定在导电支架11上，导电支架11两侧分别固接绝缘柱9，绝缘柱9的另一端与金属板6固接，且绝缘柱9通过螺丝7与绝缘框架13固定。绝缘柱9控制导电支架11的位置，使得与导电支架11固接的若干电极针4定位于若干金属圆管5的出风口15处，且都位于每根金属圆管5的轴心线上，并且电极针4与金属圆管5两者数量相等，即电极针4和金属圆管5一一对应。金属板6、导电支架11分别通过高压电缆8与高压电源12相连，高压电源12通过电源插头10连接电源。通过上述的布置结构在每根金属圆管5内部形成圆管针极结构高压高频电场。As shown in Figures 2 and 3, the round tube type high-voltage electrostatic device 3 of this embodiment is composed of electrode needles 4, metal round tubes 5, metal plates 6, conductive supports 11, insulating frames 13, and the like. The cavity of the metal round pipe 2 is an air duct for ventilation, and its two ends are respectively an air inlet 14 and an air outlet 15 . The insulating frame 13 is a hollow semi-enclosed box-shaped frame. A metal plate 6 is fixedly connected to the hollow side of the insulating frame 13. The metal plate 6 is designed according to the shape and size of the tuyere, and a plurality of metal round pipes 5 are embedded in a honeycomb shape on its surface. The end face of the air inlet 14 of the metal round pipe 5 runs through the metal plate 6 , the purpose of which is to allow the wind to pass through the metal round pipe 5 smoothly. A plurality of electrode needles 4 are fixed on the conductive support 11, and the two sides of the conductive support 11 are fixedly connected with the insulating column 9, and the other end of the insulating column 9 is fixed with the metal plate 6, and the insulating column 9 is fixed with the insulating frame 13 by the screw 7. The insulating column 9 controls the position of the conductive support 11, so that the plurality of electrode needles 4 affixed to the conductive support 11 are positioned at the air outlets 15 of the plurality of metal round tubes 5, and are all located on the axis of each metal round tube 5, And the number of the electrode needles 4 and the metal tubes 5 is equal, that is, the electrode needles 4 correspond to the metal tubes 5 one by one. The metal plate 6 and the conductive bracket 11 are respectively connected to the high voltage power supply 12 through the high voltage cable 8 , and the high voltage power supply 12 is connected to the power supply through the power plug 10 . Through the above-mentioned arrangement structure, a circular tube needle structure high-voltage and high-frequency electric field is formed inside each metal circular tube 5 .
对于圆管式高压静电装置3的工作原理具有如下描述：如图4所示，通过高压电源12对电极针4连通正电，金属板6连通负电，两者组成了圆管式结构高压静电场。带有正电的氡子体随气流进入圆管式高压静电场后，即被电场的负极所吸引，快速向电场负极—金属圆管5管壁运动，并被有效吸附。The working principle of the circular tube type high-voltage electrostatic device 3 is described as follows: As shown in Figure 4, through the high-voltage power supply 12, the electrode pin 4 is connected to the positive electricity, and the metal plate 6 is connected to the negative electricity, and the two form a high-voltage electrostatic field of the circular tube structure. . After the positively charged radon progeny enters the circular tube high-voltage electrostatic field with the airflow, it is attracted by the negative electrode of the electric field, and quickly moves to the negative electrode of the electric field—the wall of the metal circular tube 5, and is effectively adsorbed.
由于电极针4位于金属圆管5的轴心线上，针尖与金属圆管5管壁之间的放电距离相等，在整个金属圆管5内不会产生低场强的死角，也不易产生臭氧。此外对于既定的中央空调风口截面，选择恰当的金属圆管5数量及排列方式，可以获得尽可能大的通风面积，使风阻减少，不影响既有空调系统的工况。Since the electrode needle 4 is located on the axis of the metal tube 5, the discharge distance between the needle tip and the wall of the metal tube 5 is equal, so there will be no dead angle of low field strength in the entire metal tube 5, and it is not easy to generate ozone . In addition, for a given cross-section of the air outlet of the central air conditioner, choosing an appropriate number and arrangement of the metal circular tubes 5 can obtain as large a ventilation area as possible, reduce wind resistance, and not affect the working conditions of the existing air conditioning system.
如图5、6所示，平板式高压静电装置2由绝缘板16、平板电极17、螺母18、导电柱19、金属隔套20组成，若干平板电极17以一定距离间隔且互相平行固定于导电柱19上，导电柱19两侧分别通过螺母18固定导电柱19。平板电极17在通过导电柱19连通高压电源。在高压电源的作用下，相邻的两块平板电极17的极性分别为正极和负极。金属隔套20设置于绝缘板与最外侧的两块平板电极17之间，以提高其使用安全性。As shown in Figures 5 and 6, the plate-type high-voltage electrostatic device 2 is composed of an insulating plate 16, a plate electrode 17, a nut 18, a conductive column 19, and a metal spacer 20. On the post 19 , the two sides of the conductive post 19 are respectively fixed by nuts 18 to the conductive post 19 . The plate electrode 17 is connected to a high-voltage power supply through a conductive column 19 . Under the action of a high-voltage power supply, the polarities of the two adjacent flat-plate electrodes 17 are respectively positive and negative. The metal spacer 20 is arranged between the insulating plate and the two outermost flat plate electrodes 17 to improve its safety in use.
对于平板式高压静电装置2的工作原理具有如下描述：当氡子体等带电粒子进入平板式高压静电装置2的高压静电场内后，向极性相反的平板电极17运动，并被捕集。该装置采用静电力作为氡子体附着、凝聚过程的驱动力，另一方面，一旦微粒形成附着凝聚，带电微粒自身的吸力与静电力共同来维持该颗粒物在平板电极17上的附着和凝聚。The working principle of the flat-type high-voltage electrostatic device 2 is described as follows: When charged particles such as radon progeny enter the high-voltage electrostatic field of the flat-type high-voltage electrostatic device 2, they move toward the flat electrode 17 with opposite polarity and are trapped. The device uses electrostatic force as the driving force of the radon daughter attachment and aggregation process. On the other hand, once the particles form attachment and aggregation, the suction force of the charged particles and the electrostatic force work together to maintain the attachment and aggregation of the particles on the flat electrode 17.
如图9所示，氡子体经过圆管针极高压静电装置3以及平板式高压静电装置2的原理示意图。As shown in FIG. 9 , the schematic diagram of the principle of the radon progeny passing through the circular needle-type high-voltage electrostatic device 3 and the flat-plate high-voltage electrostatic device 2 .
如图7、8所示，化纤过滤器1由袋状化纤过滤网21、金属框架22组成，袋状化纤过滤网21固定在金属框架22上。As shown in FIGS. 7 and 8 , the chemical fiber filter 1 is composed of a bag-shaped chemical fiber filter screen 21 and a metal frame 22 , and the bag-shaped chemical fiber filter screen 21 is fixed on the metal frame 22 .
对于袋状化纤过滤网21的工作原理具有如下描述：本实施例采用粗效或中效化纤过滤器来去除结合态氡子体及纳米级的未结合态氡子体。首先这种过滤材料具有不吸湿、电绝缘性强、易产生静电和保持静电的特点。当氡子体等微粒在气流的作用下以一定速度通过化纤过滤器1时，由于摩擦力的作用使化纤过滤器1迅速带上负电电荷，这些电荷的积累使带有相反电荷的氡子体被有效吸附在过滤器的表面。The working principle of the bag-shaped chemical fiber filter 21 is described as follows: In this embodiment, a coarse-effect or medium-effect chemical fiber filter is used to remove bound radon progeny and nano-scale unbound radon progeny. First of all, this filter material has the characteristics of non-hygroscopic, strong electrical insulation, easy to generate and maintain static electricity. When particles such as radon daughters pass through the chemical fiber filter 1 at a certain speed under the action of the airflow, the chemical fiber filter 1 is quickly charged with negative charges due to the action of friction, and the accumulation of these charges makes the radon daughters with the opposite charge is effectively adsorbed on the surface of the filter.
本实施例在具体实施时：采用的装置可单独使用，也可将其安装到中央空调系统的回风口内，与空调同步工作。当处于单独使用的情况下，需要在其金属圆管5的进风口14处额外设置一风机，其目的在于：使室内空气定向循环流动，强制室内空气通过本实施例的复合式高压静电装置，增强圆管式高压静电装置3、平板式高压静电装置2、化纤过滤器1净化处理空气中氡子体的效能。此外风机的风量由需要净化的室内空间大小决定。When this embodiment is actually implemented: the device used can be used alone, and it can also be installed in the air return port of the central air-conditioning system to work synchronously with the air conditioner. When it is used alone, an additional blower fan needs to be installed at the air inlet 14 of the metal circular tube 5, the purpose of which is to make the indoor air flow in a directional circulation, force the indoor air to pass through the composite high-voltage electrostatic device of this embodiment, Enhance the performance of the tube type high voltage electrostatic device 3, the flat plate type high voltage electrostatic device 2, and the chemical fiber filter 1 in purifying radon progeny in the air. In addition, the air volume of the fan is determined by the size of the indoor space that needs to be purified.
如图10、11所示，采用本实施例方法及本实施例所依托的复合式高压静电装置对人防工程（地下室）中及居民住宅进行测试。As shown in Figures 10 and 11, the civil air defense project (basement) and residential buildings are tested using the method of this embodiment and the composite high-voltage electrostatic device relied on by this embodiment.
本实施例所依托的复合式高压静电装置除氡装置有三个风量（强风=600m3h-1；弱风=550m3h-1；睡眠风=480m3h-1），对不同风量分别进行了测试，按工作场所停留年工作时间2700小时及住宅停留年工作时间7000小时估算了开机前后的结合态和未结合态氡子体浓度变化和由此产生的年有效剂量（E总=ERnD+ERnDu）。The compound high-voltage electrostatic device radon removal device relied on in this embodiment has three air volumes (strong wind = 600m3 h-1 ; weak wind = 550m3 h-1 ; sleeping wind = 480m3 h-1 ). According to the test, according to the annual working time of 2700 hours in the workplace and 7000 hours in the residence, the changes in the concentration of bound and unbound radon daughters before and after starting up and the resulting annual effective dose (Etotal =ERnD+ ERnDu).
人防工程（地下室）测试：复合式高压静电装置运行4h后，氡子体RnD去除率为80%-87%；未结合态氡子体RnDu去除率60%-80%；年有效剂量E总可降低70%-80%，降氡效果明显。Civil air defense project (basement) test: After the composite high-voltage electrostatic device operates for 4 hours, the removal rate of radon daughter RnD is 80%-87%; the removal rate of unbound radon daughter RnDu is 60%-80%; the annual effective dose E canalways be Reduced by 70%-80%, the radon reduction effect is obvious.
居民住宅测试：复合式高压静电装置运行期间氡子体RnD去除率为92%-96%；未结合态氡子体RnDu去除率40-50%；根据实测结果估算的年有效剂量在1.8-2.2mSv，均低于3mSv国家标准规定的剂量控制下限。Residential test: the removal rate of radon daughter RnD during the operation of the composite high-voltage electrostatic device is 92%-96%; the removal rate of unbound radon daughter RnDu is 40-50%; the annual effective dose estimated according to the measured results is 1.8-2.2 mSv, all lower than the lower limit of dose control stipulated by the national standard of 3mSv.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210278469.2ACN102764558B (en) | 2012-08-07 | 2012-08-07 | Method for removing radon daughter in air |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210278469.2ACN102764558B (en) | 2012-08-07 | 2012-08-07 | Method for removing radon daughter in air |
| Publication Number | Publication Date |
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| CN102764558A CN102764558A (en) | 2012-11-07 |
| CN102764558Btrue CN102764558B (en) | 2015-02-25 |
| Application Number | Title | Priority Date | Filing Date |
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| CN201210278469.2AActiveCN102764558B (en) | 2012-08-07 | 2012-08-07 | Method for removing radon daughter in air |
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