CN-224212547-U - Treatment device for thallium-containing wastewater

Abstract

The utility model discloses a thallium-containing wastewater treatment device, and belongs to the technical field of wastewater treatment. The thallium-containing wastewater treatment device comprises a water storage tank, a first reaction tank, a second reaction tank, a third reaction tank, a fourth reaction tank and a fifth reaction tank which are sequentially connected, wherein the water storage tank is used for removing particle impurities in wastewater, the first reaction tank is used for adding sodium carbonate to remove heavy metals, the second reaction tank is used for adding sodium sulfide, the third reaction tank is used for adding a trapping agent, the fourth reaction tank is used for adding lime, and the fifth reaction tank is used for adding PAM. The device realizes the effective removal of thallium in wastewater.

Inventors

• JIN CHENGYONG
• GONG FUBAO
• Hao Huizhang
• LIU FANGYUN
• YANG HAITAO
• CHENG ZONGFU
• LI SHUDONG
• TAN ZUOPING
• ZENG YAN

Assignees

• 锡矿山闪星锑业有限责任公司

Dates

Publication Date

20260508

Application Date

20250526

Claims (10)

1. 1. The thallium-containing wastewater treatment device is characterized by comprising a water storage tank, a first reaction tank, a second reaction tank, a third reaction tank, a fourth reaction tank and a fifth reaction tank which are sequentially connected, wherein the water storage tank is used for removing particle impurities in wastewater, the first reaction tank is used for adding sodium carbonate to remove heavy metals, the second reaction tank is used for adding sodium sulfide, the third reaction tank is used for adding a trapping agent, the fourth reaction tank is used for adding lime, and the fifth reaction tank is used for adding PAM.
2. 2. The thallium-containing wastewater treatment device of claim 1, further comprising a first siphon water intake, wherein a water intake end of the first siphon water intake is in communication with the liquid level of the reservoir, and wherein a water outlet end of the first siphon water intake is in communication with the first reaction tank.
3. 3. The thallium containing wastewater treatment device of claim 2, wherein the reservoir is located at a higher position than the first reaction tank.
4. 4. The thallium-containing wastewater treatment device of claim 2, wherein the water inlet end of the first siphon water collector is provided with a filter screen.
5. 5. The apparatus for treating wastewater containing thallium according to claim 1, further comprising a sludge tank connected to bottoms of the water storage tank, the first reaction tank, the second reaction tank, the third reaction tank, the fourth reaction tank, the fifth reaction tank, and the sixth reaction tank, respectively, the sludge tank being for receiving sludge in the reaction tanks.
6. 6. The thallium-containing wastewater treatment apparatus of claim 5, further comprising a filter press and a sludge pump, wherein a feed end of the sludge pump is connected to the sludge tank, a discharge end of the sludge pump is connected to the filter press, and the sludge pump is configured to transport sludge in the sludge tank to the filter press, and the filter press is configured to filter-press the sludge.
7. 7. The thallium containing wastewater treatment device of claim 6, further comprising a water filtering tank connected to the filter press for accessing the filter press water after the filter press treatment of the sludge.
8. 8. The thallium-containing wastewater treatment device of claim 7, wherein the water filtering tank is connected with the first reaction tank for transferring the filter-press water to the first reaction tank for treatment.
9. 9. The thallium-containing wastewater treatment device of claim 1, wherein the first reaction tank is connected to a bottom of the second reaction tank, the second reaction tank is connected to a bottom of the third reaction tank, the third reaction tank is connected to a bottom of the fourth reaction tank, and the fourth reaction tank is connected to a bottom of the fifth reaction tank.
10. 10. The thallium-containing wastewater treatment device of claim 6, wherein the filter press is a plate and frame filter press.

Description

Treatment device for thallium-containing wastewater Technical Field The utility model relates to the technical field of wastewater treatment, in particular to a thallium-containing wastewater treatment device. Background Thallium (Tl) is a highly toxic heavy metal element, and the toxicity of the thallium is far higher than common heavy metals such As arsenic (As), cadmium (Cd) and the like. The trace thallium can enter the human body through food chain or skin contact, resulting in damage to nervous system, organ failure and even death. Thallium is common in sulphide ores, and strategic metal antimony is also commonly added in sulphide ores, so that a large amount of wastewater containing antimony and arsenic is generated in the mining, beneficiation and smelting processes of antimony ores, a large amount of wastewater containing thallium is also commonly generated, and standard treatment of wastewater containing thallium is a key for sustainable development and green development of antimony industry. The discharge standard of thallium-containing wastewater in China is very strict (less than or equal to 5 mug/L), and the thallium concentration of wastewater generated by part of antimony smelting industry is high and can reach 1-300 mg/L, so that a high-efficiency high-concentration thallium-containing wastewater treatment technology is needed. At present, the treatment research on the high-concentration thallium-containing wastewater at home and abroad is less, and the main methods include a direct precipitation method, an ion exchange method, an electrochemical deposition method, a condensation method, a microorganism method, an adsorption method and the like. Although each of these methods has its own characteristics, they have certain limitations. For example, although the direct precipitation method has simple process and low cost, the consumption of the medicament is large, and the medicament is difficult to stably reach the standard below 5 mug/L. The adsorption method usually adopts active carbon and metal oxide (such as hydrated ferric oxide) as adsorbents, and has the problems of material agglomeration, difficult regeneration and the like although the adsorption capacity is high, so that the practical application is limited. Other treatment methods also have the problems of overlong treatment time, overhigh cost, secondary pollution and the like. Particularly for waste water containing antimony and arsenic, the treatment method is rare. In view of the above, research on a high-efficiency treatment process and a treatment method for high-concentration thallium-containing wastewater is urgent, and it is particularly important to develop an economical, simple and efficient thallium-containing wastewater treatment method to solve the industrial problem of restricting the sustainable development of the antimony smelting industry in the current thallium-containing wastewater treatment. CN119551875A specifically discloses a thallium-containing wastewater treatment device, which comprises a sedimentation tank and a reaction tank arranged above the interior of the sedimentation tank, wherein the reaction tank comprises an electrocatalytic tank, a pH adjusting tank, an electric flocculation tank, a magnetic medium inoculation tank and a stabilization tank which are sequentially communicated, and a thallium-containing wastewater treatment method is also disclosed. The device has good thallium removal effect and stable water outlet, but has long process flow, complex process device and higher operation cost. How to efficiently remove thallium in wastewater is a technical problem to be solved in the prior art. Disclosure of utility model The utility model aims to overcome the technical defects, and provides a thallium-containing wastewater treatment device which solves the technical problem of how to efficiently remove thallium in wastewater in the prior art. In order to achieve the technical aim, the technical scheme of the utility model provides a thallium-containing wastewater treatment device, which comprises a water storage tank, a first reaction tank, a second reaction tank, a third reaction tank, a fourth reaction tank and a fifth reaction tank which are sequentially connected, wherein the water storage tank is used for removing particle impurities in wastewater, the first reaction tank is used for adding sodium carbonate to remove heavy metals, the second reaction tank is used for adding sodium sulfide, the third reaction tank is used for adding a trapping agent, the fourth reaction tank is used for adding lime, and the fifth reaction tank is used for adding PAM. In any embodiment, the device further comprises a first siphon water collector, wherein the water inlet end of the first siphon water collector is communicated with the liquid level of the water storage tank, and the water outlet end of the first siphon water collector is communicated with the first reaction tank. In any embodiment, the reserv