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Water body heavy metal repairing agent and use method thereof

A repair agent and heavy metal technology, applied in chemical instruments and methods, water pollutants, other chemical processes, etc., can solve the problems of high repair cost, small repair amount, and low repair rate, and achieve the effect of repairing heavy metal pollution

Inactive Publication Date: 2016-04-20
THE RES INST OF RESOURCES INSECTS RIRI OF THE CHINESE ACADEMY OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of secondary pollution, long repair period, small repair amount, low repair rate, and high repair cost in the prior art, the present invention provides a water heavy metal repair agent and its use method, which is fast, efficient, cheap, Restore the characteristics of heavy metal pollution in water in large quantities without causing secondary pollution

Method used

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  • Water body heavy metal repairing agent and use method thereof
  • Water body heavy metal repairing agent and use method thereof
  • Water body heavy metal repairing agent and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Take 35 parts of bentonite with a particle size of 5-100 mesh, 35 parts of cement (with a strength of no more than 425#), and 5 parts of vermiculite with a particle size of 1 to 2 mm. Spray a small amount of water and mix well, then granulate in a granulator , Drying and sieving to obtain repair agent A with particle size less than 5mm;

[0021] (2) Take 5 parts of bentonite with a particle size of 5-100 mesh, and after further dry grinding through a 300-mesh sieve, mix with 20 parts of cement (strength not exceeding 425#) to obtain repair agent B.

[0022] The water heavy metal repair agent provided in this example is composed of repair agent A and repair agent B.

[0023] The method of using the above-mentioned water-weight metal repair agent is as follows: Put the repairing agent A in the water-weight metal repair agent into the water body to be repaired according to the solid-to-liquid ratio kg / L as 2:1, fully stir for 20 minutes, and then statically Leave it for 16 h...

Embodiment 2

[0028] (1) Take 25 parts of bentonite with a particle size of 5-50 mesh, 25 parts of cement (with a strength of no more than 425#), and 5 parts of vermiculite with a particle size of 1 to 2 mm. Spray a small amount of water and mix well, then granulate in a granulator , Drying and sieving to obtain repair agent A with particle size less than 5mm;

[0029] (2) Take 5 parts of bentonite with a particle size of 5-50 mesh, and after further dry grinding through a 300-mesh sieve, mix with 40 parts of cement (strength not exceeding 425#) to obtain repair agent B.

[0030] The water heavy metal repair agent provided in this example is composed of repair agent A and repair agent B.

[0031] The method of using the above-mentioned water-weight metal repair agent is as follows: Put the repairing agent A in the water-weight metal repair agent into the water body to be repaired according to the solid-to-liquid ratio kg / L as 0.75:1, fully stir for 30 minutes, and then statically Leave it for 20 ...

Embodiment 3

[0036] (1) Take 20 parts of bentonite with a particle size of 50-100 mesh, 20 parts of cement (with a strength of no more than 425#), and 5 parts of vermiculite with a particle size of 1 to 2 mm, spray a small amount of water and stir evenly, then granulate in a granulator , Drying and sieving to obtain repair agent A with particle size less than 5mm;

[0037] (2) Take 5 parts of bentonite with a particle size of 50-100 mesh, and after further dry grinding through a 300-mesh sieve, mix with 20 parts of cement (strength not exceeding 425#) to obtain repair agent B.

[0038] The water heavy metal repair agent provided in this example is composed of repair agent A and repair agent B.

[0039] The method of using the above-mentioned water-weight metal repair agent is as follows: Put the repairing agent A in the water-weight metal repair agent into the water body to be repaired according to the solid-to-liquid ratio kg / L as 2.25:1, fully stir for 15 minutes, and then statically Leave it ...

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Abstract

The invention discloses a water body heavy metal repairing agent and a use method thereof. The water body heavy metal repairing agent is prepared from a repairing agent A and a repairing agent B, wherein the repairing agent A is prepared from, by mass, 20-35 parts of bentonite, 20-35 parts of cement and 5 parts of vermiculite, and the repairing agent B is prepared from, by mass, 5 parts of bentonite and 20-50 parts of cement. The repairing agent A is put into a water body to be repaired and fully stirred and stands still, then the repairing agent B is put into the water body and stirred and stands still, deposition at the bottom of the water body is removed, and the water body is repaired. By means of extremely strong adsorption performance and cation exchange performance of bentonite in the repairing agent, extremely strong adsorption performance and wrapping performance of cement and the extremely strong adsorption performance and purifying performance of vermiculite, heavy metal ions in the water body are adsorbed quickly through physical and chemical exchange, adsorbed repairing agent particles are wrapped with cement to prevent desorption and deposit at the bottom of the water body, and the aim of repairing water body heavy metal pollution is achieved.

Description

Technical field [0001] The present invention involves a water body weight metal repair agent and its usage method, which is the field of water governance technology. Background technique [0002] Water body weight metal pollution is the worst and most difficult global environmental pollution, and it is also the most harmful metal pollution to the environment and human body.Therefore, the prevention and restoration of water body weight metal pollution have attracted the common attention of the whole society. [0003] At present, water weight repair technology at home and abroad is in its infancy.Most of the water -weight metal pollution repair technology include river dilution method, chemical concrete adsorption method, ion reduction exchange method, biological repair method, electric power repair method, and biofilm repair method.However, there are many shortcomings in these methods, such as leading to secondary pollution, long repair period, small repair volume, low repair rate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/12C02F1/28C02F1/42C02F101/20
CPCB01J20/045B01J20/10B01J20/12C02F1/281C02F2101/20
Inventor 唐国勇王家璜陈航和锐吴海霞刘娟张金稳陆沁
Owner THE RES INST OF RESOURCES INSECTS RIRI OF THE CHINESE ACADEMY OF FORESTRY
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