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Quick purifying agent for nonselective heavy metal wastewater

A non-selective, heavy metal technology, applied in water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problem of greater influence on the pH value of the water body, the cost of secondary pollution of the water body, and the difficulty of removal and other problems, to achieve the effect of low requirements for equipment conditions, solving universal problems, and good processing effects

Inactive Publication Date: 2015-12-02
武汉锐索思环境科技有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

The first is to promote the detoxification or detachment of heavy metals through the principle of oxidation-reduction reaction to achieve the purpose of heavy metal wastewater treatment. The heavy metal wastewater treatment agent formed based on this will often introduce other soluble ions into the wastewater during the treatment process. However, the removal of these ions is very difficult, and it is easy to cause secondary pollution of the water body and the cost is high; the second is to rely on the principle of low solubility of alkali metal hydroxides to treat heavy metal wastewater. It is a strong alkali type, which has a great influence on the pH value of the treated water body. If it is adjusted by adding chemicals, the cost will rise rapidly

Method used

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  • Quick purifying agent for nonselective heavy metal wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] First, soak the steel slag and fly ash in hydrochloric acid with a concentration of 15% for 4 hours, respectively, and use a ball mill to grind them to no less than 200 mesh for later use; then sodium-treat the bentonite until the CEC value is ≧180mg / g, and dry them Wait until the water content is ≦1%; then select ethylene glycol polymers and polyacrylamides with fixed molecular weights, and finally add each component to a closed three-shaft mixer according to the weight percentage of each component in Table 1. After stirring for 15-20 minutes, film Once packaged, you can.

[0028] Get Wuhan Iron and Steel Cold Rolling Plant chromium-containing passivation liquid waste 1000ml, place in conical flask, wherein chromium element concentration is 75mg / L, take by weighing component 1 purifying agent according to 1% weight ratio (being 10g), add conical In the bottle, the Erlenmeyer flask was placed on an automatic rotary mixer to vibrate and stir for 2 minutes, then filtered,...

Embodiment 2

[0030] Its specific preparation method is the same as that of Example 1, except that the materials are taken according to the weight percentage of each component in Table 1.

[0031] Take 1000ml of heavy metal waste liquid from Huanggang Wuxing Metal Products Factory and place it in a conical flask, which contains Pb 2+ , Zn 2+ , Mn 2+ and PO 4 2- , the environmental protection department detects that the concentration of the above-mentioned several harmful elements exceeds the standard, weighs the component 2 purifier according to 1% by weight (i.e. 10g), adds it to the conical flask, and places the conical flask on an automatic rotary mixer to oscillate and stir for 2 Minutes, after filtration, determination of Pb in the filtrate 2+ , Zn 2+ , Mn 2+ and PO 4 2- The concentration is lower than the national environmental protection emission threshold, and the removal effect has been achieved.

Embodiment 3

[0033] Its specific preparation method is the same as that of Example 1, except that the materials are taken according to the weight percentage of each component in Table 1.

[0034] Take 1000ml of waste liquid from Jingzhou Sanonda Pesticide Factory and put it in a conical flask, which contains Pb 2+ 、Cd 2+ , Mn 2+ and PO 4 2- , the environmental protection department detects that the concentration of the above-mentioned several harmful elements exceeds the standard, weighs the component 3 purifying agent according to 1% by weight (i.e. 10g), adds it to the conical flask, and places the conical flask on an automatic rotary mixer to oscillate and stir for 2 Minutes, after filtration, determination of Pb in the filtrate 2+ 、Cd 2+ , Mn 2+ and PO 4 2-The concentration is lower than the national environmental protection emission threshold, and the removal effect has been achieved.

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Abstract

The invention relates to a quick purifying agent for nonselective heavy metal wastewater, and belongs to the technical field of environment protection. The quick purifying agent is prepared from, by weight, 30-60% of na-bentonite, 10-50% of acid-treated steel-slag-ground powder, 12-32% of aci-treated powder plant ash, 1-3% of polyethylene glycol polymers and 0.5-1.5% of polyacrylamide, and the sum of the components is 100%. The quick purifying agent has the advantages that the components of the quick purifying agent for the nonselective heavy metal wastewater are deep researched, the five components are selected, the universality problem of heavy metal wastewater treatment is solved, and the quick purifying agent for the nonselective heavy metal wastewater is good in treatment effect, low in production cost, high in universality, short in treatment cycle and low in equipment condition requirement and cannot cause secondary water pollution.

Description

technical field [0001] The invention relates to a fast purifying agent for non-selective heavy metal wastewater, which belongs to the technical field of environmental protection. Background technique [0002] my country produces a huge amount of heavy metal wastewater, especially the rapid development of industries such as pharmaceuticals, leather tanning, and rare earth element extraction, which in turn produces a large amount of heavy metal wastewater, causing environmental pollution and seriously affecting the normal production and life of related enterprises and surrounding people. There are a lot of researches on the related technologies of heavy metal wastewater treatment at home and abroad, and there are many achievements, but they are limited to the treatment process, treatment cost, treatment effect and even the secondary pollution of the environment, so the pollution of heavy metal wastewater cannot be cured. [0003] The existing heavy metal wastewater treatment a...

Claims

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Application Information

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IPC IPC(8): C02F1/00
Inventor 秦莹朱书景晏石林李春霞
Owner 武汉锐索思环境科技有限公司
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