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Method for removing trace antimony in water

A micro-dosing technology, applied in the field of micro-antimony removal in water, can solve the problems of immature technology and process, difficult to achieve, difficult to separate, etc., to achieve easy precipitation and separation, flexible and convenient operation, and large specific surface area. Effect

Inactive Publication Date: 2014-07-16
HARBIN INST OF TECH
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Problems solved by technology

[0004] The present invention aims to solve the problem of existing methods for removing trace amounts of antimony in water. It is mainly aimed at high-concentration antimony-containing wastewater. There is no mature technology and process for the removal of trace amounts of antimony in drinking water, and the water quality after treatment is difficult to reach the quality of domestic drinking water in my country. Standard requirements, the use of engineering nanomaterials to remove heavy metals in water, there are problems of recycling and difficult separation after use, and a method for removing trace antimony in water is provided

Method used

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  • Method for removing trace antimony in water

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specific Embodiment approach 1

[0014] Specific embodiment one: the method for removing trace antimony in a kind of water described in this embodiment is specifically carried out according to the following steps:

[0015] 1. Add ferrate to water containing a trace amount of antimony, and then react for 2 to 6 minutes at a rotational speed of 260r / min to 350r / min to obtain a mixed solution; the dosage of ferrate is 1mg / L ~30mg / L;

[0016] 2. At a rotating speed of 150r / min to 250r / min, the mixed solution obtained in step 1 was continuously stirred and adsorbed for 5min to 10min to obtain the mixed solution after adsorption;

[0017] 3. Add a coagulant to the mixed solution after adsorption, and then go through coagulation, precipitation and filtration in order to remove trace antimony in the water; the dosage of the coagulant is 1mg / L~45mg / L .

[0018] The ferrate added in step 1 of this embodiment is potassium ferrate or sodium ferrate. In this embodiment, in the selection of ferrate, it is based on not i...

specific Embodiment approach 2

[0023] Embodiment 2: This embodiment differs from Embodiment 1 in that: the dosage of ferrate in step 1 is 5 mg / L-30 mg / L. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0024] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the dosage of ferrate described in step 1 is 15 mg / L. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a method for removing trace antimony in water, aiming at solving the problems that the existing method for removing the trace antimony in the water mainly aims at high-concentration antimony-containing waste water, so that mature technology and process are not available for removing the trace antimony in the domestic drinking water, and the treated water can not easily reach the domestic drinking water quality standard requirements in China; the engineering nano material is difficult to recover and separate after being used for removing the heavy metal in the water. The method comprises the steps of feeding ferrate into the water containing the trace antimony, carrying out reaction, and stirring for absorption; then, feeding a coagulant; finally, sequentially coagulating, precipitating and filtering to remove the trace antimony in the water. The method has the antimony removal rate reaching up to more than 91%, is simple in technological process and low in operation cost, and is capable of effectively removing the antimony; after the method is adopted, the drinking water reaches the hygienic standard for domestic drinking water, namely, the content of the antimony is lower than 5mu g / L. The method provided by the invention is the method for removing the trace antimony in the water.

Description

technical field [0001] The invention relates to a method for removing trace amounts of antimony in water. Background technique [0002] Antimony is not an essential element for the human body. Antimony and its compounds can combine with sulfhydryl groups in the human body, interfere with the enzyme activity in the body or destroy the ion balance in the cells, causing the cells to be hypoxic and causing metabolic disorders in the human body. Continuous exposure of the human body to high concentrations of antimony can lead to irritation of the skin and mucous membranes, causing acute effects such as chemical conjunctivitis, rhinitis, pharyngitis, laryngitis, bronchitis, and pneumonia; side effects of antimony as a drug include metabolic disorders and liver and Cardiac degeneration; chronic effects include headache, dizziness, excitability, insomnia, fatigue, gastrointestinal disturbances, mucosal irritation. [0003] Based on the toxicity and environmental safety of antimony...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F1/62
Inventor 马军皇甫小留王雅安江进庞素艳路希鑫
Owner HARBIN INST OF TECH
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