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Heavy metal treatment technology for heavy metal adsorption, dehydration and fertilizer preparation

A heavy metal and process technology, applied in water/sewage treatment, sewage/sludge fertilizer, water/sewage multi-stage treatment, etc., can solve problems such as action quality hazards

Active Publication Date: 2014-12-17
ZHUHAI GUOJIA NEW MATERIAL
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Problems solved by technology

However, if there are heavy metals and other pollutants in the agricultural sludge, it will cause harm to the quality of the action. Therefore, the impact of heavy metals on crops should be considered when using sludge, and it should be used reasonably, and the sludge must be harmlessly treated and tested. Special fertilizer can be prepared only after qualified

Method used

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  • Heavy metal treatment technology for heavy metal adsorption, dehydration and fertilizer preparation
  • Heavy metal treatment technology for heavy metal adsorption, dehydration and fertilizer preparation
  • Heavy metal treatment technology for heavy metal adsorption, dehydration and fertilizer preparation

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Embodiment Construction

[0035] A heavy metal treatment process capable of heavy metal adsorption, dehydration, and fertilization, including a process for reaching the standard heavy metal content of pollutants, a deep dehydration process for pollutants, and a composting process for pollutants.

[0036] as attached figure 1 , attached figure 2 As shown, the pollutant heavy metal content up-to-standard process includes the following steps:

[0037] 1) Put the hydrochloric acid solution into the pollutant, and make the pollutant and hydrochloric acid fully mixed. In order to save raw materials, dilute hydrochloric acid can be obtained by diluting concentrated hydrochloric acid. By adding concentrated hydrochloric acid and an aqueous solution into the dilution tank 1, dilute the concentrated hydrochloric acid to 20% dilute hydrochloric acid. Then it is transported to the mixing container 4 through the acid-resistant delivery pipe 2, and stirred and mixed with the pollutants until the pH value of the m...

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Abstract

The invention discloses a heavy metal treatment technology for heavy metal adsorption, dehydration and fertilizer preparation, belonging to the technical field of heavy metal treatment and comprehensive recycle utilization. The treatment technology comprises heavy metal content of pollutant standard process, deep dehydration process of pollutant and pollutant compost process. According to the technology, heavy metal and water in the pollutant can be thoroughly treated, the treated pollutant can be recycled, and the purposes of environmental protection and sustainable economic development can be achieved.

Description

technical field [0001] The invention relates to a heavy metal treatment process capable of heavy metal adsorption, dehydration and fertilization, belongs to the technical field of heavy metal treatment and comprehensive recycling, and can be used for treatment of sludge, sewage and general soil containing heavy metals. Background technique [0002] At present, the vast majority of sewage treatment plants in my country are not equipped with sludge treatment facilities, and the sludge produced by sewage treatment is mainly landfilled, with a small amount of composting and incineration. Sludge treatment has the following major technical problems: 1. The moisture content of the primary sludge is too high, the dehydration is difficult, and the cost is high. The moisture content of the untreated sludge is 99%, and the sewage treatment plant after concentration and dehydration The moisture content of the sludge can only be reduced to 80%, and the moisture in it is difficult to disc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/62C02F11/00C02F9/04C05F7/00B09C1/08
CPCY02A40/20
Inventor 王海波范力仁
Owner ZHUHAI GUOJIA NEW MATERIAL
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