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 pr

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  • Method for processing garbage leachate

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0061] Example 1

[0062] 1000 tons / day leachate treatment project of a garbage sanitary landfill

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

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

[0065] Serial numberproject unit measured value Serial numberproject unit measured value 1COD Cr mg / L168005 Ammonia mg / L1240 2 SS mg / L5706 Chroma Times1200 3 Turbidity NTU5057 pH value-6.8 4BOD 5 mg / L28668 Conductivity μS / cm 4300

[0066] Step a, deamination

[0067] The landfill leachate enters the regulating tank through the pipeline to adjust the water quality and balance the water volume, so that the flow rate and parameters of different types of landfill leachate from various places in the landfill 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 device in the adjustment tank, then flow into the reaction tank, and d...

Example Embodiment

[0084] Example 2

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

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

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

[0088] Serial numberproject unit measured value Serial numberproject unit measured value 1COD Cr mg / L896005 Ammonia mg / L3660 2 SS mg / L8026 Chroma Times2500 3 Turbidity NTU7307 pH value-9.3 4BOD 5 mg / L179008 Conductivity μS / cm 9030

[0089] Step a, deamination

[0090] The landfill leachate enters the regulating tank through the pipeline to adjust the water quality and balance the water volume, so that the flow rate and parameters of different types of landfill leachate from various places in the landfill can be fully adjusted to facilitate the treatment of subsequent units. And add lime to adjust the pH value to 10~11 through the dosing device in the adjustment tank, and then flow into the stripping tower. Through steam strippin...

Example Embodiment

[0112] Example 3

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

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

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

[0116] Serial numberproject unit measured value Serial numberproject unit measured value 1COD Cr mg / L2843005 Ammonia mg / L4510 2 SS mg / L13816 Chroma Times4500 3 Turbidity NTU12007 pH value-9.5 4BOD 5 mg / L428008 Conductivity μS / cm 11290

[0117] Step a, deamination

[0118] The landfill leachate enters the regulating tank through the pipeline to adjust the water quality and balance the water volume, so that the flow rate and parameters of different types of landfill leachate from various places in the landfill can be fully adjusted to facilitate the treatment of subsequent units. And add lime to adjust the pH value to 10~11 through the dosing device in the adjustment tank, and then flow into the gravity machine. Through the air b...

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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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