Method for adsorbing mercury ions in wastewater by carbon granules prepared by chicken manure

A technology of carbon particles and carbonized particles, applied in the direction of adsorption of water/sewage treatment, chemical instruments and methods, water pollutants, etc., can solve the problems of poor adsorption effect of natural adsorbents and expensive synthetic polymers

Inactive Publication Date: 2015-04-08
QINGDAO AGRI UNIV
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Problems solved by technology

Because chicken manure contains a large number of functional groups and is cheap, this method overcomes the defects of poor adsorption effect of natural adsorbents and expensive synthetic polymers, and provides an efficient and low-cost method for treating mercury-containing wastewater

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  • Method for adsorbing mercury ions in wastewater by carbon granules prepared by chicken manure
  • Method for adsorbing mercury ions in wastewater by carbon granules prepared by chicken manure
  • Method for adsorbing mercury ions in wastewater by carbon granules prepared by chicken manure

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Embodiment Construction

[0037] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only, and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.

[0038] According to one aspect of the present invention, there is provided a method for preparing carbon particles from chicken manure to adsorb mercury ions in wastewater, which includes the following steps.

[0039] The chicken manure is sent to the paddle dryer to dry into semi-dry chicken manure with a moisture content of 40%-50%.

[0040] Preferably, the chicken manure is sent to a separating screen to separate impu...

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Abstract

The invention relates to a method for adsorbing mercury ions in wastewater by carbon granules prepared by chicken manure. The method comprises the following steps: acquiring fourth carbonized granules by the steps I-IV, adjusting the pH value of mercury-containing wastewater to be 8, adding 50g of mixture of poly-tert-butylphenoldisulfide, ferrous sulfide and sodium hydrogen sulfate with the mass ratio of 1:2:4 into one liter of mercury-containing wastewater, mixing for 1h, adjusting the pH value of mercury-containing wastewater to be 6.5, adding with 50g of mixture of polyoxyethylene fatty alcohol sodium sulfate and sodium hypochlorite into one liter of mercury-containing wastewater, mixing for 2h, filtering, adjusting the pH value of mercury-containing wastewater to be 5-6.3, and adding 12.5g of the fourth carbonized granules into one liter of the treated mercury-containing wastewater, and mixing at 120r per minute for 8h.

Description

technical field [0001] The invention belongs to the technical field of purification and treatment of mercury-containing wastewater, and in particular relates to a method for preparing carbon particles through chicken manure to absorb mercury ions in wastewater. Background technique [0002] Existing mercury and its compounds (mainly methylmercury) are highly toxic global pollutants. During the peak period of mercury use in the 1960s and 1970s, about 92,000 tons of mercury products were produced globally, with an average annual output of Nearly 8000 tons. The biological toxicity of mercury is very strong. In recent years, the mercury pollution and its compounds produced by the widespread use of mercury have brought more and more harm to the human living environment and human health. Water-soluble inorganic mercury compounds are easily absorbed by the intestinal tract, such as mercuric chloride (mercuric dichloride), which is highly toxic, and inorganic mercury generates meth...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F1/62
CPCB01J20/22C02F1/285C02F2101/20
Inventor 张磊
Owner QINGDAO AGRI UNIV
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