A method for disposal of landfill sludge

A disposal method and sludge technology, applied in the field of sewage or sludge treatment and wastewater, can solve the problems of inability to take into account convenience, rationality and environmental protection, and achieve strong construction operability, low equipment input cost, and thorough disposal. Effect

Active Publication Date: 2021-04-02
中节能大地(杭州)环境修复有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem solved by the present invention is that in the prior art, when the source of sludge is unknown, its composition is unclear and there is an odor, there is no sludge deodorization technology or product that can reasonably act on the filling Landfill sludge cannot take into account the problems of convenience, rationality and environmental protection, and thus provides an optimized disposal method for landfill sludge

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042]After a landfill sludge is detected by "the measurement of aerodynamic determination of air quality" (GB / T 14675-1993), the stink concentration exceeds 10,000.

[0043]Use this method to dispose:

[0044]1. Analysis of sludge samples, showing that the main odor pollutants are ammonia;

[0045]2, calculate the quality of sludge, configure a concentration of hydrochloric acid solution and concentration of 5% hydrogenated (hydrogen peroxide) solution;

[0046]3, divided into two injection pipes into underground sludge simultaneously;

[0047]4, by the mixing stirring apparatus mounted on the hydraulic excavator, stirring with the blade on the stirring head, so that the solution is sufficiently stirred with sludge, the addition of hydrochloric acid is 0.5% of the sludge quality, and the hydrogen peroxide is added. 1.5% of the mass of mud;

[0048]5. After mixing the sludge of the drug is allowed to react 5.5 h, the hydraulic excavator is used to mix 8% of the sludge mass of the sludge;

[0049]After...

Embodiment 2

[0052]After a landfill sludge is detected by "the measurement of aerodynamic determination of air quality" (GB / T 14675-1993), the stink concentration exceeds 10,000.

[0053]Use this method to dispose:

[0054]1. Analysis of sludge samples, showing that the main odor pollutants are ammonia;

[0055]2. Calculate the quality of sludge, configure a certain concentration of sulfuric acid solution and a concentration of 1% a hydrogenated (hydrogen peroxide) solution;

[0056]3, divided into two injection pipes into underground sludge simultaneously;

[0057]4, by the mixing stirring apparatus mounted on the hydraulic excavator, stirring with the blade on the stirring head, so that the solution is thoroughly stirred with sludge, the addition of sulfuric acid is 1.5% of the quality of sludge, and the amount of hydrogen peroxide is added. 1% of the mass of mud;

[0058]5, after the sludge mixed into the drug is allowed to react 4h, the hydraulic excavator is used to mix 4% lime and 6% magnesium oxide using...

Embodiment 3

[0062]After a landfill sludge is detected by "the measurement of aerodynamic determination of air quality" (GB / T 14675-1993), the stink concentration exceeds 10,000.

[0063]Use this method to dispose:

[0064]1. Analysis of sludge samples, showing that the main odor pollutants are ammonia;

[0065]2. Calculate the quality of sludge, and have a concentration of 10% sodium hypochlorite solution;

[0066]3. Set a injection tube to inject the solution into underground sludge;

[0067]4, by mixing the mixing mixing apparatus attached to the hydraulic excavator, stirring with the blade on the stirring head, so that the solution to the sludge is thoroughly stirred, and the addition of sodium hypochlorite is 5% of the quality of sludge.

[0068]5. After mixing the drug-mixed sludge is allowed to react 5 h, the hydraulic excavator is used to mix 6% magnesium oxide mass;

[0069]After 6,24h, the disposed sludge was dug.

[0070]After testing, the smell concentration of sludge was reduced to 100, and there was no ...

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Abstract

The invention relates to a landfill sludge treatment method. The method comprises the following steps: sampling and analyzing sludge, determining the pH value, the type of smelly pollutants, the landfill depth and the horizontal distribution of the sludge, preparing an oxidation preparation, injecting the oxidation preparation into underground sludge by virtue of in-situ mixing and stirring equipment, and simultaneously stirring the oxidation preparation and the sludge underground by virtue of an impeller stirring head of the in-situ mixing and stirring equipment; after uniform stirring, carrying out standing reaction for 3.5-5.5 hours, and putting a curing agent into sludge by using an engineering machine, and stirring continuously by using the in-situ mixing and stirring equipment; afteruniform stirring, standing for 24-48 hours, carrying out open type excavation and transfer on the solidified sludge. By sequentially carrying out in-situ treatment and excavation, the construction operability is strong, the investment cost of the equipment is low, the treatment period is short, the treatment is thorough, the secondary pollution is avoided, the problem of stink pollution in the excavation process of the sludge is solved, and meanwhile, the treatment of the sludge is realized; and the method has relatively good economic and social benefits.

Description

Technical field[0001]The present invention belongs to the technical field of wastewater, sewage or sludge treatment, and more particularly to a disposal method of landfill sludge.Background technique[0002]With the development of the contamination site, the development of the industry and the expansion of the city are increasingly buried, and the sludge is found. These sludge sources are unclear, but there is unclear, but there is basically existed problems, and some have heavy metals or organic contamination problems. Direct opening of the sludge will produce a more strong smell, which seriously affects the field operation and the surrounding environment, and thus needs Take scientific reasonable treatment measures.[0003]In the prior art, there has been a technique in prior art involves treatment of odor sludge.[0004]China Patent ZL201410009136.9 introduces a sludge deodorant, which consists of pulverized coal, calcium oxide powder and magnesium oxide. The best embodiment of the deo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/06C02F11/00
Inventor 元妙新龚雄武王昌华张飞邱锋
Owner 中节能大地(杭州)环境修复有限公司
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