Chemical waste leachate treatment agent and treatment method

A technology of landfill leachate and treatment method, applied in the field of chemical landfill leachate treatment agent and treatment, can solve the problems of inability to meet comprehensive sewage discharge standards, long treatment period, long treatment time, etc., and is conducive to large-scale treatment and treatment. The effect of short time and low cost

Inactive Publication Date: 2014-12-24
HUAINAN MINING IND GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the flocculation method for urban landfill leachate is applied to chemical landfill leachate, there are usually defects such as poor treatment effect and long treatment time, so that it cannot meet the requirements of comprehensive sewage discharge standards
At present, the treatment methods for chemical landfill leachate mainly include the use of anaerobic aerobic membrane bioreactor and reverse osmosis technology. Although it has certain effects, the investment cost is large and the treatment cycle is long.

Method used

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  • Chemical waste leachate treatment agent and treatment method
  • Chemical waste leachate treatment agent and treatment method
  • Chemical waste leachate treatment agent and treatment method

Examples

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Effect test

Embodiment 1

[0025] The chemical landfill leachate treatment agent of this embodiment is composed of alum (the first component) and polyacrylamide (the second component), and the weight ratio of alum and polyacrylamide is 15:3.

[0026] The chemical landfill leachate treatment method of the present embodiment comprises the following steps:

[0027] 1) Adjust the pH value of the chemical landfill leachate to 9 with a hydrochloric acid solution with a mass fraction of 37%.

[0028] 2) Take 10 L of the leachate with pH=9 above, add 15 g of the first component to it, and stir for about 2 minutes.

[0029] 3) Add 3g of the second component to the leachate obtained in the above step 2), and stir until flocs appear (about 2-3min), and the sedimentation velocity (V) of the flocs is about 6.5cm / min. The substance is basically completely precipitated, and after the precipitate is separated, the treatment solution is obtained.

[0030] Use alkaline potassium persulfate oxidation-ultraviolet spectro...

Embodiment 2

[0033] The chemical landfill leachate treatment agent of this embodiment is composed of alum (the first component) and polyacrylamide (the second component), and the weight ratio of alum and polyacrylamide is 15:1.

[0034] The chemical landfill leachate treatment method of the present embodiment comprises the following steps:

[0035] 1) Adjust the pH value of the chemical landfill leachate to 8 with a hydrochloric acid solution with a mass fraction of 37%.

[0036] 2) Take 100 L of the leachate with pH=8 above, add 150 g of the first component into it, and stir for about 3 minutes.

[0037] 3) Add 10g of the second component to the leachate obtained in the above step 2), and stir until flocs appear (about 2-3min), and the sedimentation velocity (V) of the flocs is about 2.026cm / min. The substance is basically completely precipitated, and after the precipitation is separated, a treatment solution is obtained; T in the treatment solution N 3.09mg / L, T P 0.05mg / L, COD Mn is...

Embodiment 3

[0040] The chemical landfill leachate treatment agent of this embodiment is composed of alum (the first component) and polyacrylamide (the second component), and the weight ratio of alum and polyacrylamide is 10:5.

[0041] The chemical landfill leachate treatment method of the present embodiment comprises the following steps:

[0042] 1) Adjust the pH value of the chemical landfill leachate to 9.5 with a hydrochloric acid solution with a mass fraction of 37%.

[0043] 2) Take 1000 L of the above leachate with pH=9.5, add 1000 g of the first component into it, and stir for about 4 minutes.

[0044] 3) Add 500g of the second component to the leachate obtained in the above step 2), stir until flocs appear (about 2-3min), and the sedimentation velocity (V) of the flocs is about 6.4cm / min. The substance is basically precipitated completely, and after the precipitation is separated, a treatment solution is obtained; T in the treatment solution N 4.12mg / L, T P 0.09mg / L, COD Mn i...

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Abstract

The invention provides a chemical waste leachate treatment agent and treatment method. The chemical waste leachate treatment agent comprises a first component and a second component; the first component is alum; the second component is polyacrylamide; the weight ratio of the first component and the second component is 0.5 to 1.5 to 0.1 to 0.5. The chemical waste leachate treatment method comprises adjusting a PH (Potential Of Hydrogen) value of the chemical waste leachate treatment agent into 8 to 9.5; adding 0.5 to 1.5 g of first component into every liter of chemical waste leachate treatment agent and stirring; adding 0.1 to 0.5 g of second component into every liter of chemical waste leachate treatment agent and stirring. The chemical waste leachate treatment agent and treatment method is mainly specific to chemical waste leachate, particularly to strong-alkali high-salt chemical waste leachate, the nitrogen and phosphorus content and the permanganate index in the leachate can be significantly reduced, the treatment effect is good, and the economic and efficient effect is achieved.

Description

technical field [0001] The invention relates to a chemical garbage leachate treatment agent and a treatment method, which belong to the field of environmental science and engineering. Background technique [0002] Chemical waste refers to the residual pollutants from the production of chemical substances, such as chemical waste residues, waste plastics, waste rubber, waste fillers, waste catalysts, waste polymers, chemical sludge, etc. After it is collected uniformly, along with the atmospheric precipitation, the intrusion of other surface water and the water generated by its own degradation, it will form chemical landfill leachate, which contains a large amount of organic matter, refractory substances, and high concentration of nitrogen. Phosphorus ions, and highly alkaline, if it is not treated, it will flow into the soil and surface water at will, and the degree of pollution to the environment will be unpredictable. [0003] When the flocculation method for urban landfil...

Claims

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Application Information

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IPC IPC(8): C02F1/56C02F1/52
Inventor 陈永春孙庆业徐翀杜冰谢毫安士凯陆春辉
Owner HUAINAN MINING IND GRP
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