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Thallium ion treating agent and thallium-containing wastewater treating method

A technology for ion treatment and wastewater treatment, applied in the direction of neutralization water/sewage treatment, water/sewage treatment, chemical instruments and methods, etc., can solve the problems of complex operation, long time-consuming, low efficiency, etc., to protect the environment and water Resources, low production costs, and high processing efficiency

Inactive Publication Date: 2017-07-14
韶关市雅鲁环保实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this treatment process is step-by-step dosing, and the operation is complicated. The dosage of oxidant, pH regulator and flocculant cannot be determined in a short time. In addition, the content of heavy metal thallium ions in the purified water after treatment is still difficult to meet the discharge standard of less than 0.1 μg / L

Method used

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  • Thallium ion treating agent and thallium-containing wastewater treating method

Examples

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Effect test

Embodiment 1

[0025] The thallium ion treating agent provided in this embodiment includes by mass percentage: 10% zinc sulfate, 14% magnesium sulfate, 10% polyaluminum chloride, 19% calcium hypochlorite, 8% sodium hydroxide, 17% calcium oxide, activated carbon 8% and ferrous sulfate 14%.

[0026] The preparation method of the thallium ion treatment agent is as follows: under normal temperature and normal pressure, first weigh the raw materials according to the proportion, then add zinc sulfate, magnesium sulfate, polyalumina, ferrous sulfate and activated carbon into the mixer, start Stir the motor, then slowly add calcium hypochlorite, sodium hydroxide and calcium oxide in sequence, and then stir and mix for 60 minutes to obtain the finished product. Then, the finished product of the thallium ion treatment agent is sampled and tested, and bagged after passing the test. After bagging, it is transported to the finished product warehouse for storage and standby, and production records are mad...

Embodiment 2

[0040] The thallium ion treating agent provided in this embodiment includes by mass percentage: 11.5% of zinc sulfate, 15.5% of magnesium sulfate, 10% of polyaluminum chloride, 20.5% of calcium hypochlorite, 4% of sodium hydroxide, 16.5% of calcium oxide, activated carbon 8% and ferrous sulfate 14%.

[0041] The preparation method of the thallium ion treating agent of this embodiment is the same as that of Embodiment 1.

[0042] Use the thallium ion treatment agent to treat the iron and steel industry desulfurization wastewater with a thallium ion content of 950.0 μg / L and a pH of 6.0 to 7.0, specifically according to the following steps:

[0043] (1) On-site pre-test: Take 200mg, 300mg, 400mg, 500mg and 600mg of thallium ion treatment agents and add them to five beakers containing 100ml of desulfurization wastewater from the iron and steel industry respectively. After standing for 40 minutes, detect the supernatant in the five beakers thallium ion content. The test result i...

Embodiment 3

[0055] The thallium ion treating agent provided in this embodiment includes by mass percentage: 22% of zinc sulfate, 13% of magnesium sulfate, 7% of polyaluminum chloride, 18% of calcium hypochlorite, 4% of sodium hydroxide, 16% of calcium oxide, activated carbon 10% and ferrous sulfate 10%.

[0056] The preparation method of the thallium ion treating agent of this embodiment is the same as that of Embodiment 1.

[0057] Use the thallium ion treatment agent to treat the desulfurization wastewater in the iron and steel industry with a thallium ion content greater than 500 μg / L. The treatment steps are basically the same as in Example 1, except that the dosage of the thallium ion treatment agent, Concentration, reaction time and other parameters are adjusted according to the thallium ion content of the wastewater and the results of the on-site pre-test, and the thallium ion content in the treated purified water can be reduced to below 0.05 μg / L.

[0058] Using the thallium ion ...

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Abstract

The invention relates to a thallium ion treating agent. The thallium ion treating agent is prepared from the following raw materials in percentage by mass: 8 to 22% of zinc sulfate, 13 to 28% of magnesium sulfate, 7 to 22% of polyaluminum chloride, 18 to 32% of calcium hypochlorite, 2 to 17% of sodium hydroxide, 16 to 31% of calcium oxide, 7 to 25% of activated carbon and 10 to 28% of ferrous sulfate. The invention further relates to a thallium-containing wastewater treating method, and the treating method comprises the following steps: (1) preparing tap water and the thallium ion treating agent into a medical solution for future use; (2) adding the prepared medical solution into thallium-containing wastewater to react; and (3) after completing reaction, carrying out precipitation or filtration treatment to wastewater subjected to reaction. The thallium ion treating agent provided by the invention can be prepared for use in advance; the preparation method and application method are simple; the reaction is easy to control; and the thallium ion treating agent has the advantages that the treatment efficiency is high, and the cost is low.

Description

technical field [0001] The invention belongs to the field of heavy metal ion wastewater treatment, and in particular relates to a thallium ion treatment agent and a treatment method for thallium-containing wastewater. Background technique [0002] In nature, thallium (Tl) is widely distributed in various water bodies, but its content is generally very low, while Tl is highly concentrated in mine wastewater and smelting industrial wastewater, and its content in rivers, lakes, and groundwater in mining areas is abnormally high, forming relatively high Severe regional Tl pollution. There are two oxidation states of Tl in natural water: Tl + and Tl +3 , Tl + Is the main form of existence, easy to migrate to a longer distance with the flow of groundwater or surface water, only under extremely strong oxidation conditions Tl +3 to exist. [0003] Thallium (Tl) is a typical toxic metal element, which is more toxic to mammals than Hg, Cd, Cu, Pb, Zn and other elements, and the f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28C02F1/52C02F1/66C02F1/76C02F101/20
CPCC02F1/283C02F1/5236C02F1/66C02F1/76C02F2101/20
Inventor 肖波潘丽梅
Owner 韶关市雅鲁环保实业有限公司
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