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Pharmaceutical compound for treating wastewater containing complex heavy metals and/or radioactive substances and application of pharmaceutical compound

A compound agent and heavy metal technology, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of no obvious effect of anion removal, high operating cost, difficult regeneration, etc., and achieve the effect of good sedimentation and enrichment effect

Active Publication Date: 2012-10-17
CHANGSHA RES INST OF MINING & METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the ion exchange method uses a cation resin exchanger to pass the wastewater to be treated and remove the heavy metals in the water, but the disadvantage of this method is that the resin is expensive, the operating cost is high, and the regeneration of the resin is difficult, and the concentrated water is not easy to treat etc.; electrodialysis is to use ion exchange membrane and under the condition of electrification, water and metal ions are separated and removed, but the equipment system investment of this method is large, the treatment cost is too high, the membrane maintenance is difficult, and it is difficult to treat wastewater. popularization and application in China; reverse osmosis method is to use reverse osmosis membrane to separate heavy metal ions in water from water, but there are the same problems as electrodialysis; organic chelation method is to use a resin of chelating fiber to chelate and adsorb Heavy metal ions in water are removed, and then the resin material is regenerated by desorption, but this method also has problems such as high cost and difficult regeneration; the electrocoagulation method uses an electrolytic cell to cause redox precipitation or chemical precipitation of heavy metals in water. Through the flocculation process, the removal efficiency of heavy metals in water has an important relationship with wastewater quality, power parameters, electrodes and other factors; currently the most widely used heavy metal wastewater treatment methods are mostly the method of adding alkali to adjust, flocculation, precipitation and separation, and the treatment equipment is relatively simple. , the effect is easy to control, and the cost of treatment and equipment investment is relatively low, but the disadvantage is that the agent must be dosed in stages, and the precipitation efficiency of some heavy metals is low by only using hydroxide, and the treatment of low-concentration, multi-component heavy metal wastewater Incomplete, and has no obvious effect on the removal of anions

Method used

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  • Pharmaceutical compound for treating wastewater containing complex heavy metals and/or radioactive substances and application of pharmaceutical compound
  • Pharmaceutical compound for treating wastewater containing complex heavy metals and/or radioactive substances and application of pharmaceutical compound
  • Pharmaceutical compound for treating wastewater containing complex heavy metals and/or radioactive substances and application of pharmaceutical compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1: Complex polymetallic comprehensive wastewater treatment.

[0029] A compound agent (RM-1, custom brand) of the present invention that can be used to treat complex heavy metal and / or radioactive wastewater is prepared by mixing the following components evenly:

[0030]

[0031] Then use inorganic Mn, Zn, Cu, Hg, Cd, Pb, Cr, Ni salts to prepare wastewater samples containing various heavy metal ions as shown in Table 1 below, take out 100ml of water samples, place them in a beaker, and add A solution of 100mL of the above-mentioned composite drug with a mass concentration of 2% (the following percentages represent mass concentration unless otherwise specified) (the amount of the compound drug added in this example is 1.13 times the theoretical amount of heavy metals), after stirring for 5 minutes, it will produce A large number of metal complexes precipitate, then add 8ml, 1% concentration of magnesium hydroxide inorganic flocculant, stir for 5min, then add 0...

Embodiment 2

[0035] Example 2: Zinc oxide metallurgical wastewater treatment.

[0036] A compound agent (RM-2) of the present invention that can be used to treat complex heavy metal and / or radioactive wastewater is prepared by mixing the following components evenly:

[0037]

[0038] The zinc oxide metallurgical waste water of this embodiment is industrially leaching secondary zinc oxide powder with ammonium bicarbonate ammonia, steaming ammonia after removing impurities, reclaiming ammonia water for reuse to obtain basic zinc carbonate, washing with water and pressing filtration to produce comprehensive waste water ( Washing water, press filter water), the heavy metals and ammonia nitrogen contained in it are shown in Table 2 below. To the 100m of this embodiment 3 Add 10m of the solution of the above compound agent with a mass concentration of 3% in the waste water 3 (In this example, the amount of compound agent added is 1.4 times the theoretical amount of heavy metals). After stir...

Embodiment 3

[0042] Example 3: Treatment of metallurgical wastewater.

[0043] A compound agent (RM-3) of the present invention that can be used to treat complex heavy metal and / or radioactive wastewater is prepared by mixing the following components evenly:

[0044] 6-methyl-8-hydroxyquinoline 28kg

[0045] Sodium Polyethylene Polyamine Dithioformate 28kg and

[0046] Sodium diisopropyl dithiophosphate 44kg.

[0047] For the metallurgical wastewater in this example, different doses of the compound agent (RM-3) of this example were added, and the dosage was in the range of 0.5 to 1.5 times. The relationship between the addition and the treatment effect of heavy metals was tested, and the results are shown in Table 3 below. Show.

[0048] Table 3: The effect of the addition amount of the compound agent on the treatment effect

[0049]

[0050] It can be seen from Table 3 that the removal rate increases with the increase of the amount of compound agent added. The removal rate increas...

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Abstract

The invention discloses a pharmaceutical compound for treating wastewater containing complex heavy metals and / or radioactive substances and application of the pharmaceutical compound. The pharmaceutical compound comprises one of 8-hydroxyquinoline and derivatives of 8-hydroxyquinoline or a composition of any two of 8-hydroxyquinoline and the derivatives of 8-hydroxyquinoline, one of polyamine-dithiocarbamates or a composition of any two of the polyamine-dithiocarbamates, and one of dihydrocarbyl dithiophosphates or a composition of any two of the dihydrocarbyl dithiophosphates, wherein the mass fractions of the three components are respectively 1% to 90%, 1% to 90% and 1% to 98%. The pharmaceutical compound is dissolved in water and then the pharmaceutical compound solution is added into wastewater to be treated, and the amount of the pharmaceutical compound is 0.5 to 2 times larger than the theoretical amount of heavy metals and radioactive substances in the wastewater; and a metal complex is formed after sufficient stirring, and finally, the wastewater treatment can be completed by filtering separation. The pharmaceutical compound and the application of the pharmaceutical compound provided by the invention have the advantages of obvious effects, less investment, low cost, no site restriction, remote automatic control and the like.

Description

technical field [0001] The invention relates to a treatment agent and a treatment method for waste water, in particular to a treatment agent and a treatment method for waste water containing heavy metals and / or radioactive substances. Background technique [0002] Heavy metals refer to metals with a specific gravity greater than 4 or 5, and there are about 45 kinds. The usual heavy metal pollution mainly refers to the environmental pollution of five heavy metals with significant biological toxicity, such as lead, cadmium, chromium, mercury, and arsenic. Other heavy metals, such as zinc, copper, cobalt, nickel, tin, vanadium, etc. It is relatively difficult to control heavy metal pollution. When they accumulate to a certain limit in the water body, they will cause serious harm to the aquatic ecosystem composed of water body-aquatic plants-aquatic animals, and may affect human health through the food chain. [0003] Hunan is the "Hometown of Nonferrous Metals". Nonferrous met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/56
Inventor 肖国光杨国超曾娟肖焱余侃萍谢建国邓景衡
Owner CHANGSHA RES INST OF MINING & METALLURGY
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