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Method for processing garbage leachate

A landfill leachate and treatment method technology, which is applied in the field of landfill leachate treatment, can solve the problems of substandard discharge of landfill leachate, large consumption of chemical agents, complicated treatment process, etc., achieve good effluent quality, and improve biodegradability , the effect of good biochemical conditions

Inactive Publication Date: 2012-11-21
BOYING XIAMEN SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The purpose of the present invention is to overcome the defects of the prior art, such as complicated treatment process, large consumption of chemical agents, high cost, substandard discharge of landfill leachate after treatment, etc., through the organic combination of electrolysis process, membrane process and biochemical process, learn from each other's strengths, thereby Form a landfill leachate treatment method with high ammonia nitrogen removal rate, high chroma removal rate and high COD removal rate, stable operation, strong adaptability to water quality changes, low cost and high treatment efficiency

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  • Method for processing garbage leachate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] 1,000 tons / day leachate treatment project of a sanitary landfill

[0063] The measured water quality of the landfill leachate raw water is shown in Table 2.

[0064] Table 2 Water quality of landfill leachate raw water.

[0065] serial number project unit measured value serial number project unit measured value 1 COD Cr mg / L 16800 5 Ammonia nitrogen mg / L 1240 2 SS mg / L 570 6 Chroma times 1200 3 Turbidity NTU 505 7 pH value - 6.8 4 BOD 5 mg / L 2866 8 Conductivity μS / cm 4300

[0066] Step a, deammonia nitrogen

[0067] The landfill leachate enters the adjustment tank through the pipeline to adjust the water quality and balance the water volume, so that the flow and parameters of different landfill leachate from various properties can be fully adjusted to facilitate the treatment of subsequent units. And add sodium hydroxide solution to adjust the pH value to 9~11 through the dosing dev...

Embodiment 2

[0085] 300 tons / day leachate treatment project of a sanitary landfill

[0086] The measured indicators of the landfill leachate raw water are shown in Table 4.

[0087] Table 4 Water quality of landfill leachate raw water.

[0088] serial number project unit measured value serial number project unit measured value 1 COD Cr mg / L 89600 5 Ammonia nitrogen mg / L 3660 2 SS mg / L 802 6 Chroma times 2500 3 Turbidity NTU 730 7 pH value - 9.3 4 BOD 5 mg / L 17900 8 Conductivity μS / cm 9030

[0089] Step a, deammonia nitrogen

[0090] The landfill leachate enters the adjustment tank through the pipeline to adjust the water quality and balance the water volume, so that the flow and parameters of different landfill leachate from various properties can be fully adjusted to facilitate the treatment of subsequent units. In the regulating tank, lime is added through the dosing device to adjust the pH value to ...

Embodiment 3

[0113] 1500 tons / day leachate treatment project of a sanitary landfill

[0114] The measured indicators of the landfill leachate raw water are shown in Table 6.

[0115] Table 6 Water quality of landfill leachate raw water.

[0116] serial number project unit measured value serial number project unit measured value 1 COD Cr mg / L 284300 5 Ammonia nitrogen mg / L 4510 2 SS mg / L 1381 6 Chroma times 4500 3 Turbidity NTU 1200 7 pH value - 9.5 4 BOD 5 mg / L 42800 8 Conductivity μS / cm 11290

[0117] Step a, deammonia nitrogen

[0118] The landfill leachate enters the adjustment tank through the pipeline to adjust the water quality and balance the water volume, so that the flow and parameters of different landfill leachate from various properties can be fully adjusted to facilitate the treatment of subsequent units. In the regulating tank, lime is added through the dosing device to adjust the pH valu...

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Abstract

The invention discloses a method for processing a landfill leachate, which comprises the following steps of ammonia nitrogen removal, flocculent precipitate, electrolysis, capacitance desalination, anaerobic treatment, aerobic treatment, membrane filtration and membrane concentrate treatment. The method for processing the landfill leachate has the advantages that an electrolysis technology, a membrane technology and a bio-chemical technology are combined to form a method for processing the landfill leachate, the method has the characteristics of stable operation, strong adaptive capacity on water quality change, low cost, high treatment efficiency, effective reduction of index of ammonia nitrogen, COD, SS, chromaticity in the landfill leachate and standard discharge of effluent.

Description

technical field [0001] The invention belongs to the field of environmental engineering, and relates to a method for treating sewage, in particular to a method for treating landfill leachate with low cost and good effect. Background technique [0002] Landfill leachate is a high-concentration organic landfill leachate that is difficult to treat. It mainly comes from the following three aspects: 1. Natural rainfall and runoff in the landfill; 2. Water contained in the garbage itself; The water produced by the anaerobic decomposition of microorganisms after burial; the precipitation in the landfill is the main part. The typical values ​​of pollutant content in urban landfill leachate are shown in Table 1. [0003] Table 1 The main components of general landfill leachate (except for pH and sensory indicators, the unit is mg / L) [0004] project Concentration range project Concentration range sensory index black / smelly chloride 189～3262 pH value ...

Claims

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Application Information

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IPC IPC(8): C02F9/14
CPCC02F1/66C02F9/00C02F1/56C02F1/5254C02F1/4691C02F2103/06C02F3/30C02F1/4672C02F3/1268C02F1/441C02F1/444Y02A20/131Y02W10/10
Inventor 张世文李丹殷明彩秦婧
Owner BOYING XIAMEN SCI & TECH
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