Landfill leachate treatment agent and landfill leachate treatment method

A landfill leachate and treatment method technology, which is applied in the field of landfill leachate treatment agent and landfill leachate treatment, can solve the problems of stench, wide range of water quality changes, and difficult treatment, so as to reduce the content of organic matter, reduce the migration ability, Promotes the effect of sediment removal

Pending Publication Date: 2022-04-12
浙江千尧环境工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the concentration of pollutants is high, the range of water quality changes is large, and it has a strong odor, which is black or taupe, and it is extremely difficult to treat
[0003] At present, pollutants such as organic matter, heavy metal ions, and floating matter have corresponding mature wastewater treatment methods, but there are few researches on the treatment methods of humic acid, which makes it difficult to treat the humic acid with a large content in landfill leachate

Method used

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  • Landfill leachate treatment agent and landfill leachate treatment method
  • Landfill leachate treatment agent and landfill leachate treatment method
  • Landfill leachate treatment agent and landfill leachate treatment method

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0044] Preparation example 1, a modified diatomite, the selection of each raw material component is shown in Table 1, and it is prepared according to the following method:

[0045] S1-1: Mix tetraethyl orthosilicate, ethanol and water and stir evenly to obtain a mixed solution, soak diatomite with an average particle size of 100-200 mesh in the mixed solution, heat to 70°C and stir, and stir At the same time, dropwise add ammonia water (alkali catalyst) with a concentration of 10 wt% to the mixed solution, soak for 1 hour and filter to obtain particulate matter, and dry the particulate matter to constant weight to obtain pretreated diatomite;

[0046] S1-2: Add the pretreated diatomite to the toluene solution (long-chain alkylsilane solution) of 2wt% octadecyltrimethoxysilane, soak for 1h, filter and wash with ethanol, at 70°C Dry to constant weight to obtain modified diatomite.

preparation example 2

[0047] Preparation example 2, a modified diatomite, the selection of each raw material component is shown in Table 1, and it is prepared according to the following method:

[0048]S1-1: Mix tetraethyl orthosilicate, ethanol and water and stir evenly to obtain a mixed solution, soak diatomite with an average particle size of 200-300 meshes in the mixed solution, heat to 75°C and stir. At the same time, dropwise add a sodium hydroxide aqueous solution (alkaline catalyst) with a concentration of 5wt% to the mixed solution, soak for 0.5h and filter to obtain particulate matter, dry the particulate matter to constant weight, and obtain pretreated diatomite;

[0049] S1-2: adding the pretreated diatomite to the petroleum ether solution (long-chain alkylsilane solution) of octadecyltrichlorosilane with a concentration of 1.5wt%, soaking for 2h, cleaning with ethanol after filtering, and then washing at 80 Dry at ℃ to constant weight to obtain modified diatomite.

preparation example 3

[0050] Preparation Example 3, a modified diatomite, differs from Preparation Example 1 in that the selection of each raw material component is shown in Table 1.

[0051] Selection and consumption (kg) of each raw material in table 1, preparation examples 1~3

[0052]

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Abstract

The invention discloses a landfill leachate treatment agent and a landfill leachate treatment method. The landfill leachate treatment agent comprises the following raw materials in parts by weight: 80-100 parts of PAM; 0.1 to 0.3 part of PAC; 5 to 20 parts of modified diatomite; the modified diatomite at least comprises the following raw materials: 1-3 parts of diatomite; 1 to 2.5 parts of ethyl orthosilicate; 8 to 12 parts of ethanol; 0.1 to 1 part of a base catalyst; 1 to 2 parts of water; 80 to 120 parts of a long-chain alkyl silane solution; the concentration of the long-chain alkyl silane solution is 1-5 wt%. The landfill leachate treating agent can effectively remove humic acid in landfill leachate and promote effective improvement of water quality indexes of treated leachate.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a landfill leachate treatment agent and a landfill leachate treatment method. Background technique [0002] Landfill leachate is a high-concentration, highly polluted organic wastewater produced during the waste degradation process. Due to the diversity of garbage types and the environment, the landfill leachate contains a large amount of ammonia nitrogen, organic matter, humic acid, heavy metal ions and floating objects and other pollutants. Moreover, the concentration of pollutants is high, the range of water quality changes is large, and it has a strong stench, which is black or taupe, making it extremely difficult to deal with. [0003] At present, organic matter, heavy metal ions, floating matter and other pollutants have corresponding mature wastewater treatment methods, but there are few researches on the treatment methods of humic acid, which makes it difficult to treat t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F1/56C02F1/52C02F1/28B01J20/22B01J20/08B01J20/30C02F101/20C02F103/06
Inventor 蒋锡根
Owner 浙江千尧环境工程有限公司
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