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Technological method of producing low concentration heavy metal sewage treatment agent

A low-concentration heavy metal and wastewater treatment agent technology, applied in water/sewage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., can solve problems such as unsatisfactory effects and achieve sustainable resource development strategy Beneficial, unique selectivity and adsorption capacity, simple effect of desorption process

Inactive Publication Date: 2006-02-22
工信华鑫科技有限公司
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  • 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

[0011] 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:

[0012] The process for producing low-concentration heavy metal wastewater treatment agent is:

[0013] 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 was...

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PUM

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Abstract

A process for preparing the treating agent used to treat low-concentration heavy metal sewage containing Cr and Cd includes such steps as thermal acid washing of raw silica gel, introducing the wet air from the reactor of the saturated sodium (or potassium) bromide solution to the container of water vapour saturated air and silica gel to generate a water molecular layer on the surface of silica gel, silylating reaction between hydrated silica gel, hexane and silane coupling agent to obtain the silylated silica gel, and graft reaction on vinylimine polymer.

Description

Technical field [0001] The invention belongs to metal ion treatment technology, and mainly relates to a process method for producing low-concentration 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 treatmen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/62C02F1/28C02F101/20
Inventor 邱建宁郑宏赵路
Owner 工信华鑫科技有限公司
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