| 一种结晶去除和回收重金属的装置 |
Device for Removing and Recovering Heavy Metal by Crystallization |
| 摘要 |
Abstract |
| 本实用新型公开了一种结晶去除和回收重金属的装置，该装置为一封闭容器，该容器从下到上分为相互连通的结晶反应区和沉淀区； |
The utility model discloses a device for removing and recovering heavy metals by crystallization, which is a closed container which is divided into a crystallization reaction zone and a precipitation zone which are communicated with each other from bottom to top; |
| 结晶反应区内填充有诱导结晶载体，底部设有布水器，结晶反应区对应的容器的底部设有回流溶液入口，容器侧壁两侧设有重金属废水进口和沉淀剂进口； |
an induced crystallization carrier is filled in the crystallization reaction zone, a water distributor is arranged at the bottom of the crystallization reaction zone, a reflux solution inlet is arranged at the bottom of a container corresponding to the crystallization reaction zone, and heavy metal wastewater inlets and precipitant inlets are arranged on two sides of the side wall of the container; |
| 结晶反应区上部对应的容器侧壁设有回流溶液出口，沉淀区内设有固液分离器、微晶捕集器； |
a reflux solution outlet is formed in the side wall of the container corresponding to the upper part of the crystallization reaction zone, and a solid-liquid separator and a microcrystal catcher are arranged in the precipitation zone; |
| 沉淀区对应的容器侧壁上设有出水口。 |
and a water outlet is arranged on the side wall of the container corresponding to the precipitation area. |
| 本实用新型具有操作简单、易于操作管理、重金属去除率高，同步实现重金属污染物的“无害化”与“资源化”的优点。 |
The invention has the advantages of simple operation, easy operation and management, high heavy metal removal rate and simultaneous realization of harmlessness and recycling of heavy metal pollutants. |
| 权利要求书 |
Claims |
| 0001 . |
0001 . |
| 1 |
1 |
| 一种结晶去除和回收重金属的装置，其特征在于，该装置为一封闭容器，该容器从下到上分为相互连通的结晶反应区和沉淀区。 |
A device for removing and recovering heavy metals by crystallization, characterized in that the device is a closed container which is divided into a crystallization reaction zone and a precipitation zone which are communicated with each other from bottom to top. |
| 结晶反应区内填充有诱导结晶载体，底部设有布水器，结晶反应区对应的容器的底部设有回流溶液入口，容器侧壁两侧设有重金属废水进口和沉淀剂进口； |
an induced crystallization carrier is filled in the crystallization reaction zone, a water distributor is arranged at the bottom of the crystallization reaction zone, a reflux solution inlet is arranged at the bottom of a container corresponding to the crystallization reaction zone, and heavy metal wastewater inlets and precipitant inlets are arranged on two sides of the side wall of the container; |
| 结晶反应区上部对应的容器侧壁设有回流溶液出口，沉淀区内设有固液分离器、微晶捕集器； |
a reflux solution outlet is formed in the side wall of the container corresponding to the upper part of the crystallization reaction zone, and a solid-liquid separator and a microcrystal catcher are arranged in the precipitation zone; |
| 沉淀区对应的容器侧壁上设有出水口。 |
and a water outlet is arranged on the side wall of the container corresponding to the precipitation area. |
| 0002 . |
0002 . |
| 2 |
2 |
| 如权利要求1所述装置，其特征在于，所述的封闭容器为圆柱形。 |
The device of claim 1, characterized in that said closed container is cylindrical. |
| 0003 . |
0003 . |
| 3 |
3 |
| 如权利要求1所述装置，其特征在于，所述的结晶反应区和沉淀区的直径比为0.2∶1-1∶1，体积比为20∶1-2.0∶1，整个装置的高径比25∶1-5∶1。 |
The device of claim 1, characterized in that the crystallization reaction zone and the precipitation zone have a diameter ratio of 0.2: 1 to 1: 1, a volume ratio of 20: 1 to 2.0: 1, and a height to diameter ratio of 25: 1 to 5: 1. |
| 0004 . |
0004 . |
| 4 |
4 |
| 如权利要求1所述装置，其特征在于，所述布水器为一管多孔、分枝管状或盘式布水器。 |
The device of claim 1, characterized in that the water distributor is a porous tube, branched tubular, or tray water distributor. |
| 0005 . |
0005 . |
| 5 |
5 |
| 如权利要求1所述装置，其特征在于，所述反应器两侧的废水进口和沉淀剂进口设有一个或两个以上。 |
The device of claim 1, characterized in that one or more wastewater inlets and precipitant inlets are provided on both sides of the reactor. |
| 0006 . |
0006 . |
| 6 |
6 |
| 如权利要求1所述装置，其特征在于，所述结晶反应区内填充诱导结晶载体的晶种直径为0.05-0.5mm。 |
The device of claim 1, characterized in that the diameter of the seeds filled with the induced crystallization support in the crystallization reaction zone is 0.05-0.5mm. |
| 0007 . |
0007 . |
| 7 |
7 |
| 如权利要求1所述装置，其特征在于，所述沉淀区内微晶捕集器为一层或两层以上圆形片状金属网或塑料网，网格直径0.05-0.5cm，每片金属网的直径与结晶反应区的内径比为1∶1-0.4∶1。 |
The device of claim 1, characterized in that the microcrystalline trap in the precipitation zone is one or more layers of circular sheet metal or plastic mesh with mesh diameters 0.05-0.5cm, and the ratio of the diameter of each metal mesh to the inner diameter of the crystallization reaction zone is 1: 1-0.4: 1. |
| 0008 . |
0008 . |
| 8 |
8 |
| 如权利要求1所述装置，其特征在于，所述固液分离器主体为三角构型，固液分离器底部直径和结晶反应区的内径比为0.9∶1-0.5∶1。 |
The device of claim 1, characterized in that the solid-liquid separator main body has a triangular configuration, and the ratio of the diameter of the solid-liquid separator bottom to the inner diameter of the crystallization reaction zone is 0.9: 1 to 0.5: 1. |
| 说明书 |
Description |
| 一种结晶去除和回收重金属的装置 |
Device for Removing and Recovering Heavy Metal by Crystallization |
| [0001] |
[0001] |
| 技术领域 |
TECHNICAL FIELD |
| [0002] |
[0002] |
| 本实用新型属于污水处理装置技术领域，尤其是涉及一种结晶去除和回收重金属的装置。 |
The utility model belongs to the technical field of sewage treatment devices, and particularly relates to a device for removing and recovering heavy metals by crystallization. |
| [0003] |
[0003] |
| 背景技术 |
BACKGROUND OF THE INVENTION |
| [0004] |
[0004] |
| 中国水体的重金属污染逐渐成为危害最大的水污染问题之一，江河湖库底质的污染率高达80.1％。 |
The heavy metal pollution of water body in China has gradually become one of the most harmful water pollution problems, the pollution rate of river, lake and reservoir sediment is as high as 80.1%. |
| 2003年黄河，淮河，松花江，辽河等十大流域的重金属超标断面的污染程度均为超V类。 |
In 2003, the heavy metal over-standard sections in the Yellow River, Huaihe River, Songhua River, Liaohe River and other ten basins were all over V class pollution. |
| 重金属污染不仅具有环境危害持久性、地球化学循环性和生态风险性等特点，且易被生物富集并有生物放大效应。 |
Heavy metal pollution not only has the characteristics of environmental hazard persistence, geochemical cycling and ecological risk, but also is easy to be bioaccumulated and biological amplification effect. |
| 因此自然水体如遭重金属污染，不仅将对渔业和农业造成严重危害，还将对人体健康产生严重威胁。 |
Therefore, the natural water body polluted by heavy metals will not only cause serious harm to fishery and agriculture, but also pose serious threat to human health. |
| [0005] |
[0005] |
| 国内外关于重金属废水处理技术的研究已有几十年的历史，取得了大量的研究成果，各种处理工艺不断涌现与发展，化学沉淀法作为一种传统的重金属污染物处理技术，因其具有操作简单、处理速度快、耐负荷冲击强等优点在重金属废水处理领域有广泛的应用。 |
The research on heavy metal wastewater treatment technology has a history of several decades at home and abroad, and a large number of research results have been obtained. Various treatment processes continue to emerge and develop. As a traditional heavy metal pollutant treatment technology, chemical precipitation method has been widely used in the field of heavy metal wastewater treatment because of its advantages of simple operation, fast treatment speed, strong load impact resistance and so on. |
| 但其也有以下缺点： |
But it also has the following disadvantages: |
| -1 |
-1 |
| 占地面积大； |
the occupied area is large; |
| -2 |
-2 |
| 处理后重金属污泥含水量高，处理成本高； |
the treated heavy metal sludge has high water content and high treatment cost; |
| -3 |
-3 |
| 污泥中重金属回收困难。 |
Recovery of heavy metals from sludge is difficult. |
| [0006] |
[0006] |
| 发明内容 |
SUMMARY OF THE INVENTION |
| [0007] |
[0007] |
| 本实用新型的目的是克服已有技术的不足，提供一种结晶去除和回收重金属的装置，具有操作简单，并具有高重金属去除和回收率的特点。 |
The purpose of the present utility model is to overcome the disadvantages of the prior art and to provide a device for removing and recovering heavy metals by crystallization, which has the characteristics of simple operation and high heavy metal removal and recovery rate. |
| [0008] |
[0008] |
| 本实用新型中的一种结晶去除和回收重金属的装置，其特征在于，该装置为一封闭容器，该容器从下到上分为相互连通的结晶反应区和沉淀区； |
The device for removing and recovering heavy metals by crystallization is characterized in that the device is a closed container which is divided into a crystallization reaction area and a precipitation area which are communicated with each other from bottom to top; |
| 。 |
。 |
| 结晶反应区内填充有诱导结晶载体，底部设有布水器，结晶反应区对应的容器的底部设有回流溶液入口，容器侧壁两侧设有重金属废水进口和沉淀剂进口； |
an induced crystallization carrier is filled in the crystallization reaction zone, a water distributor is arranged at the bottom of the crystallization reaction zone, a reflux solution inlet is arranged at the bottom of a container corresponding to the crystallization reaction zone, and heavy metal wastewater inlets and precipitant inlets are arranged on two sides of the side wall of the container; |
| 结晶反应区上部对应的容器侧壁设有回流溶液出口，沉淀区内设有固液分离器、微晶捕集器； |
a reflux solution outlet is formed in the side wall of the container corresponding to the upper part of the crystallization reaction zone, and a solid-liquid separator and a microcrystal catcher are arranged in the precipitation zone; |
| 沉淀区对应的容器侧壁上设有出水口。 |
and a water outlet is arranged on the side wall of the container corresponding to the precipitation area. |
| [0009] |
[0009] |
| 所述的装置主体为圆柱形，采用有机玻璃、工程塑料或不锈钢等制成。 |
The device main body is cylindrical and is made of organic glass, engineering plastic or stainless steel. |
| 的结晶反应区和沉淀区的直径比为0.2∶1-1∶1，体积比为20∶1-2.0∶1，整个装置的高径比25∶1-5∶1。 |
The diameter ratio of the crystallization reaction zone to the precipitation zone is 0.2: 1-1: 1, the volume ratio is 20: 1-2.0: 1, and the height-diameter ratio of the whole device is 25: 1-5: 1. |
| 布水器可为一管多孔、分枝管状和盘式布水器； |
The water distributor can be a pipe porous, branched tubular and disc type water distributor; |
| 反应器两侧的废水进口和沉淀剂进口可设有一个或两个以上。 |
There may be one or more wastewater inlets and precipitant inlets on both sides of the reactor. |
| 结晶反应区内填充诱导结晶载体的晶种直径为0.05-0.5mm。 |
The diameter of the seeds filled with the induced crystallization support in the crystallization reaction zone was 0.05-0.5mm. |
| [0010] |
[0010] |
| 所述装置沉淀区内微晶捕集器为一层或两层以上圆形片状金属网或塑料网，网格直径0.05-0.5cm，每片金属网的直径与结晶反应区的内径比为1∶1-0.4∶1。 |
The microcrystal catcher in the precipitation area of the device is one layer or more than two layers of circular sheet metal nets or plastic nets, the diameter of each net is 0.05-0.5cm, and the ratio of the diameter of each metal net to the inner diameter of the crystallization reaction area is 1: 1-0.4: 1. |
| 固液分离器主体为三角构型，固液分离器底部直径和结晶反应区的内径比为0.9∶1-0.5∶1。 |
the solid-liquid separator main body is in a triangular configuration, and the ratio of the diameter of the solid-liquid separator bottom to the inner diameter of the crystallization reaction zone is 0.9: 1-0.5: 1. |
| [0011] |
[0011] |
| 本实用新型与现有装置相比具有的有益效果是： |
Compared with the existing device, the utility model has the beneficial effects that: |
| [0012] |
[0012] |
| -1 |
-1 |
| 装置自下而上分为结晶反应区和沉淀区，各单元结构紧凑、功能分区明确、操作简单、易于维护； |
the device is divided into a crystallization reaction area and a precipitation area from bottom to top, each unit is compact in structure, clear in functional division, simple to operate and easy to maintain; |
| [0013] |
[0013] |
| -2 |
-2 |
| 装置底部两侧设有多个废水进口和药剂进口，可以根据装置运行过程中重金属效果分别调整废水进口和药剂进口数量，便于调控装置内重金属离子结晶沉淀时过饱和度，促使重金属以非均相成核方式结晶沉淀，提高重金属去除效率； |
a plurality of wastewater inlets and medicament inlets are arranged on two sides of the bottom of the device, so that the number of the wastewater inlets and the number of the medicament inlets can be respectively adjusted according to the heavy metal effect in the operation process of the device, the supersaturation degree of heavy metal ions in the device during crystallization and precipitation can be conveniently regulated and controlled, the heavy metal is promoted to crystallize and precipitate in a heterogeneous nucleation mode, and the heavy metal removal efficiency is improved; |
| [0014] |
[0014] |
| -3 |
-3 |
| 装置设有反应溶液回流，根据不同重金属结晶特征设定不同的回流比，使装置内诱导结晶载体处于良好流化状态，整个装置不易堵塞，载体表面的结晶产物附着均匀致密，纯度较高，利于回收。 |
The device is provided with reaction solution backflow, different backflow ratios are set according to different heavy metal crystallization characteristics, an induced crystallization carrier in the device is in a good fluidization state, the whole device is not easy to block, crystallization products on the surface of the carrier are uniformly and densely attached, the purity is high, and recovery is facilitated. |
| [0015] |
[0015] |
| -4 |
-4 |
| 诱导结晶载体经沉淀剂表面改性后，大大缩小诱导结晶载体和结晶重金属沉淀物之间的表面张力，有利于提高重金属结晶去除率； |
After the induced crystallization carrier is subjected to surface modification by the precipitant, the surface tension between the induced crystallization carrier and the crystallized heavy metal precipitate is greatly reduced, which is favorable for improving the heavy metal crystallization removal rate; |
| [0016] |
[0016] |
| -5 |
-5 |
| 装置顶部沉淀区设有固液分离器，易于分离沉淀区内溶液中的结晶悬浮物； |
a solid-liquid separator is arranged in the precipitation zone at the top of the device, so that the crystal suspension in the solution in the precipitation zone can be easily separated; |
| [0017] |
[0017] |
| -6 |
-6 |
| 装置顶部沉淀区设有微晶捕集器，对未在结晶反应区载体表面生长二进入沉淀区的的微晶实现二次结晶捕集，进一步提高重金属的结晶去除率和回收率。 |
A microcrystal catcher is arranged in the precipitation area at the top of the device, secondary crystallization catching is achieved for microcrystals which do not grow on the surface of the carrier in the crystallization reaction area and enter the precipitation area, and the crystallization removal rate and recovery rate of heavy metals are further improved. |
| [0018] |
[0018] |
| 附图说明 |
BRIEF DESCRIPTION OF THE DRAWINGS |
| [0019] |
[0019] |
| 图1为本发明所述一种结晶去除和回收重金属的装置的实施例结构示意图。 |
Fig. 1 is a schematic view showing the construction of an embodiment of an apparatus for removing and recovering heavy metals by crystallization according to the present invention. |
| [0020] |
[0020] |
| 具体实施方式 |
DETAILED DESCRIPTION OF THE INVENTION |
| [0021] |
[0021] |
| 本实用新型设计的结晶去除和回收重金属的装置结合附图及实施例详细说明如下： |
The device for removing and recovering heavy metals by crystallization designed by the utility model is described in detail by combining the figures and the embodiments as follows: |
| [0022] |
[0022] |
| 本实用新型中的一种重金属去除和回收装置结构，如图1所示，该装置为一封闭容器，从下到上分为相互连通的结晶反应区I和沉淀区II。 |
The structure of a heavy metal removal and recovery device in the present utility model, as shown in figure 1, is a closed vessel divided from bottom to top into a crystallization reaction zone I and a precipitation zone II which are communicated with each other. |
| 结晶反应区I底部两侧分别一个或两个以上的废水进口1和沉淀剂进口8(例如图中显示有4个)，底部设有回流溶液入口11和布水器9。 |
and one or more wastewater inlets 1 and precipitant inlets 8 (for example, four are shown in the figure) are respectively arranged at two sides of the bottom of the crystallization reaction zone I, and a reflux solution inlet 11 and a water distributor 9 are arranged at the bottom. |
| 结晶反应区I上部设有回流溶液出口2，结晶反应区I内填充诱导结晶载体7。 |
The upper part of the crystallization reaction zone I is provided with a reflux solution outlet 2, and the crystallization reaction zone I is filled with an induced crystallization carrier 7. |
| 沉淀区II内设有固液分离器5及微晶捕集器6； |
a solid-liquid separator 5 and a microcrystal catcher 6 are arranged in the precipitation zone II; |
| 结晶反应区I的侧壁设有出水口3，顶部设有顶盖4使装置封闭。 |
The side wall of the crystallization reaction zone I is provided with a water outlet 3, and the top of the crystallization reaction zone I is provided with a top cover 4 to seal the device. |
| [0023] |
[0023] |
| 所述的装置主体为圆柱形，采用有机玻璃、工程塑料或不锈钢等制成。 |
The device main body is cylindrical and is made of organic glass, engineering plastic or stainless steel. |
| 结晶反应区I和沉淀区II的直径比为0.2∶1-1∶1，体积比为20∶1-2.0∶1，整个装置的高径比25∶1-5∶1。 |
The diameter ratio of the crystallization reaction zone I and the precipitation zone II is 0.2: 1-1: 1, the volume ratio is 20: 1-2.0: 1, and the height-diameter ratio of the whole device is 25: 1-5: 1. |
| [0024] |
[0024] |
| 布水器9可为一管多孔、分枝管状和盘式布水器； |
the water distributor 9 can be a pipe porous, branched tubular and disc type water distributor; |
| 反应装置两侧分别设有的废水进口和沉淀剂进口可根据重金属沉淀结晶去除效果决定选用废水进口数量和沉淀剂进口数量。 |
waste water inlets and precipitant inlets which are respectively arranged on two sides of the reaction device can be used for determining the number of the waste water inlets and the number of the precipitant inlets according to the removal effect of heavy metal precipitation and crystallization. |
| 溶液中局部过饱和度大小是决定重金属去除效果的重要因素，通过增加废水进口数量和沉淀剂进口数量，可以有效降低结晶反应区I底部的局部过饱和度，使反应区I内的过饱和度分布更均匀，从而提高重金属的去除效率。 |
The local supersaturation degree in the solution is an important factor determining the heavy metal removal effect, the local supersaturation degree at the bottom of the crystallization reaction zone I can be effectively reduced by increasing the number of wastewater inlets and the number of precipitant inlets, the supersaturation degree in the reaction zone I is more uniformly distributed, and therefore the heavy metal removal efficiency is improved. |
| [0025] |
[0025] |
| 结晶反应区I内填充诱导结晶载体7为石英砂、白云石、陶粒或重金属盐类晶体等，载体直径为0.05-0.5mm，用量为100-1000g/L，结晶载体表面采用沉淀剂表面涂敷等手段实施表面改性。 |
and the crystallization reaction zone I is filled with an induced crystallization carrier 7 which is quartz sand, dolomite, ceramsite or heavy metal salt crystals and the like, the diameter of the carrier is 0.05-0.5mm, the dosage is 100-1000g/L, and the surface of the crystallization carrier is coated with a precipitator and the like to implement surface modification. |
| 诱导结晶载体经沉淀剂表面改性后，大大缩小诱导结晶载体和结晶重金属沉淀物之间的表面张力，可以实现本装置的快速稳定运行。 |
After the induction crystallization carrier is subjected to surface modification by the precipitant, the surface tension between the induction crystallization carrier and the crystallization heavy metal precipitate is greatly reduced, and the rapid and stable operation of the device can be realized. |
| [0026] |
[0026] |
| 固液分离器5可采用有机玻璃、工程塑料或不锈钢等制成，主体为三角构型，固液分离器底部直径和结晶反应区的内径比为0.9∶1-0.5∶1，固液分离器5固定在装置顶盖。 |
The solid-liquid separator 5 can be made of organic glass, engineering plastic or stainless steel and the like, the main body is of a triangular configuration, the ratio of the diameter of the bottom of the solid-liquid separator to the inner diameter of the crystallization reaction zone is 0.9: 1-0.5: 1, and the solid-liquid separator 5 is fixed on the top cover of the device. |
| [0027] |
[0027] |
| 装置沉淀区内II微晶捕集器6为一层或两层以上的(例如图中显示有5层)圆形金属网或塑料网，网格直径0.05-0.5cm，每片金属网的直径与结晶反应区的内径比为1∶1-0.4∶1。 |
The 11-crystallite traps 6 in the precipitation zone of the apparatus are one or more layers (e.g. five layers are shown) of circular metal or plastic mesh with mesh diameters 0.05-0.5cm, the ratio of the diameter of each metal mesh to the inner diameter of the crystallization reaction zone being from 1: 1 to 0.4: 1. |
| 所需圆形片状金属网的层数根据重金属沉淀处理效果自由决定。 |
The number of layers of the required circular sheet metal mesh is freely determined according to the heavy metal precipitation treatment effect. |
| 通过在沉淀区II设置微晶捕集器6，对未在结晶反应区载体表面生长二进入沉淀区的微晶实现二次结晶捕集，进一步提高重金属的结晶去除率和回收率。 |
by arranging the microcrystal catcher 6 in the precipitation zone II, secondary crystallization catching is realized for microcrystals which do not grow on the surface of the carrier in the crystallization reaction zone and enter the precipitation zone, and the crystallization removal rate and recovery rate of heavy metals are further improved. |
| 微晶捕集器6固定在装置顶盖，根据本装置的运行情况，微晶捕集器可随时更换替代。 |
The microcrystal trap 6 is fixed to the top cover of the device and can be replaced at any time according to the operation of the device. |
| [0028] |
[0028] |
| 本实用新型的重金属结晶去除和回收装置的工作原理： |
The working principle of the heavy metal crystallization removal and recovery device of the utility model is as follows: |
| 重金属废水进口1和沉淀剂进口8是装置的进水口，重金属离子在反应区I内与沉淀剂离子反应，生成的重金属沉淀晶体在诱导结晶载体表面生长。 |
A heavy metal wastewater inlet 1 and a precipitant inlet 8 are water inlets of the device, heavy metal ions react with the precipitant ions in a reaction zone I, and generated heavy metal precipitation crystals grow on the surface of an induced crystallization carrier. |
| 在实际反应操作过程中，回流溶液出口2和回流溶液进口11通过计量泵相连，实现反应过程中反应溶液的回流和结晶载体流化。 |
In the actual reaction operation process, the reflux solution outlet 2 and the reflux solution inlet 11 are connected through a metering pump to realize reflux of the reaction solution and fluidization of the crystallization carrier in the reaction process. |
| 装置出水口3为整个装置的出口。 |
The device outlet 3 is the outlet of the whole device. |
| [0029] |
[0029] |
| 本装置的最大特征在于以下几点： |
The device is characterized in that: |
| -1 |
-1 |
| 结晶反应区底部两侧设有多个废水进口和沉淀剂进口，使装置内局部过饱和度更均匀，有利于提高重金属去除率； |
a plurality of wastewater inlets and precipitant inlets are arranged on two sides of the bottom of the crystallization reaction zone, so that the local supersaturation degree in the device is more uniform, and the heavy metal removal rate is improved; |
| -2 |
-2 |
| 诱导结晶载体实施表面改性后，可以实现本装置的快速稳定运行； |
After the induction crystallization carrier is subjected to surface modification, the rapid and stable operation of the device can be realized; |
| -3 |
-3 |
| 装置沉淀区内设有固液分离器和微晶捕集器，实现溶液中重金属沉淀微晶的二次捕集，提高重金属去除率和回收率。 |
and a solid-liquid separator and a microcrystal catcher are arranged in the precipitation zone of the device, so that secondary trapping of heavy metal precipitated microcrystals in the solution is realized, and the heavy metal removal rate and recovery rate are improved. |
| [0030] |
[0030] |
| 实施例： |
Embodiment: |
| [0031] |
[0031] |
| 本实施例的结构如图1所示，重金属结晶去除和回收装置主体为圆柱形容器，采用有机玻璃制成。 |
The structure of the embodiment is shown in figure 1, and the heavy metal crystallization removing and recovering device body is a cylindrical container and is made of organic glass. |
| 结晶反应区和沉淀区的直径比为0.8∶1，体积比为15∶1，整个装置的高径比20∶1。 |
The diameter ratio of the crystallization reaction zone to the precipitation zone was 0.8: 1, the volume ratio was 15: 1, and the height to diameter ratio of the whole apparatus was 20: 1. |
| 装置包括结晶反应区和沉淀区，反应区内底部两侧分别设有废水一个进口和一个沉淀剂进口，底部设有回流溶液入口和一个一管多孔布水器。 |
The device comprises a crystallization reaction area and a precipitation area, wherein two sides of the bottom in the reaction area are respectively provided with a wastewater inlet and a precipitant inlet, and the bottom is provided with a reflux solution inlet and a one-pipe porous water distributor. |
| 结晶反应区上部设有一个回流溶液出口，结晶反应区内填充诱导结晶载体。 |
the upper part of the crystallization reaction zone is provided with a reflux solution outlet, and the crystallization reaction zone is filled with an induced crystallization carrier. |
| 沉淀区内设有固液分离器、微晶捕集器和出水口。 |
and a solid-liquid separator, a microcrystal catcher and a water outlet are arranged in the precipitation zone. |
| [0032] |
[0032] |
| 结晶反应区装置两侧分别设有2个废水进口和2个沉淀剂进口。 |
two wastewater inlets and two precipitant inlets are respectively arranged on two sides of the crystallization reaction zone device. |
| 结晶反应区内填充白云石为诱导结晶载体，载体直径为0.1mm，用量为300g/L，结晶载体表面采用Na2S实施表面改性。 |
Dolomite filled in the crystallization reaction zone is used as an induced crystallization carrier, the diameter of the carrier is 0.1mm, the dosage is 300g/L, and the surface of the crystallization carrier is modified by Na2S. |
| 固液分离器为有机玻璃材质，主体为三角构型，固液分离器底部直径和结晶反应区的内径比为0.7∶1，固液分离器固定在装置顶盖。 |
The solid-liquid separator is made of organic glass, the main body is of a triangular configuration, the ratio of the diameter of the bottom of the solid-liquid separator to the inner diameter of the crystallization reaction zone is 0.7: 1, and the solid-liquid separator is fixed on the top cover of the device. |
| 装置沉淀区内微晶捕集器为3层圆形片状金属网或塑料网，网格直径0.1cm，每片金属网的直径与结晶反应区的内径比为0.6∶1。 |
The microcrystal catcher in the precipitation area of the device comprises three layers of circular sheet metal nets or plastic nets, the diameter of each net is 0.1cm, and the ratio of the diameter of each metal net to the inner diameter of the crystallization reaction area is 0.6: 1. |
| [0033] |
[0033] |
| 在装置运行中，含铜废水和沉淀剂Na2S分别从重金属废水进口和沉淀剂进口进入反应器，通过计量泵将回流溶液出口和回流溶液进口相连，实现反应过程中反应溶液的回流和结晶载体流化，处理后出水从出水口流出整个装置。 |
during operation of the device, the copper-containing wastewater and the precipitant Na2S respectively enter the reactor from the heavy metal wastewater inlet and the precipitant inlet, the reflux solution outlet is connected with the reflux solution inlet through the metering pump, reflux of the reaction solution and fluidization of the crystallization carrier in the reaction process are realized, and treated effluent flows out of the whole device from the water outlet. |
| [0034] |
[0034] |
| 以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内。 |
Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. |