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Technological method of producing highly toxic heavy metal waste water treatment agent

A technology of wastewater treatment agent and process method, which is applied in the direction of water/sewage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., can solve problems such as unsatisfactory effects, and achieve sustainable resource development strategies. , water quality improvement, unique selectivity and adsorption capacity

Inactive Publication Date: 2005-03-23
邱建宁
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are many technical solutions for wastewater treatment, such as: chemical drug purification treatment, ion exchange resin adsorption treatment, etc., but the effect of the above measures on the adsorption and removal of heavy metals in water is not ideal

Method used

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Examples

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Embodiment Construction

[0012] The following examples can make those skilled in the art understand the processing method of the present invention more fully, but do not limit the present invention in any way:

[0013] The process for producing highly toxic heavy metal wastewater treatment agent is:

[0014] Add 500 kg of raw silica gel into the corrosion-resistant stirring reactor, and then add 1500 liters of one equivalent hydrochloric acid, or nitric acid, from the high-level metering tank; start heating and boiling. The stirring speed is controlled below 60 rpm, so as not to damage the silica gel. Stir and pickle at the bubble point temperature for 6 hours, then pass cooling water to the jacket of the reaction kettle to cool down, and release the silica gel when the temperature of the material in the kettle drops to normal temperature. The released silica gel is filtered out in the filter washer to remove the acid solution, and then the silica gel is washed with deionized water. When the washing ...

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Abstract

A process for preparing the treating agent used to treat high-toxicity heavy metal waste water containing Hg, Cd and Pb includes such steps as thermal acid wasing of raw silica gel, introducing the wet air from the reactor of saturated potassium (or sodium) bromide solution to the container of water vapor saturated air and silica gel to generate a molecular layer on the surface of silica gel, silylating reaction between hydrated silica gel, hexane and silane coupling agent to obtain silylated silica gel, graft reaction on vinylimine, and reacting on vinylthioether.

Description

Technical field [0001] The invention belongs to metal ion treatment technology, and mainly relates to a process method for producing highly toxic heavy metal wastewater treatment agent. Background technique [0002] The main function of the treatment agent provided by the present invention involves the treatment of heavy metal wastewater, that is, the adsorption and removal of heavy metals in the wastewater such as lead, cadmium, mercury, chromium, copper and other heavy metals present in the wastewater, so that the wastewater reaches the allowable concentration and total concentration of heavy metals. quantity. It can also be used for the primary recovery of heavy metal mining, the treatment of urban wastewater and industrial wastewater, and other social issues involving environmental pollution and human health. At present, there are many technical solutions for wastewater treatment, such as: chemical drug purification treatment, ion exchange resin adsorption treatment, et...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28C02F1/62
Inventor 邱建宁郑宏赵路
Owner 邱建宁
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