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Landfill leachate treatment method based on high-frequency vibration membrane

A landfill leachate, high-frequency vibration technology, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. The effect of improving filtration flux, strong anti-clogging ability, and strengthening denitrification effect

Active Publication Date: 2014-04-09
GUANGDONG PROVINCIAL ACADEMY OF ENVIRONMENTAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the invention also solves the problems of easy blockage of the membrane and high frequency of membrane replacement

Method used

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  • Landfill leachate treatment method based on high-frequency vibration membrane
  • Landfill leachate treatment method based on high-frequency vibration membrane
  • Landfill leachate treatment method based on high-frequency vibration membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as figure 1 As shown, the landfill leachate treatment method based on high-frequency vibrating membrane described in this embodiment mainly includes: regulating tank→ABR reactor system→MBR reactor→high-frequency vibrating membrane system→standard discharge.

[0039] The waste treatment capacity of a sanitary landfill in a southern city is about 500t / d. According to investigation and analysis, the main components of the landfill waste are 45.63% organic matter, 25.17% inorganic matter, and 29.20% waste products (paper, plastic, fabric, glass, metal, etc.). The leachate produced by it is 300m 3 / d, the water quality is shown in Table 1:

[0040] Table 1 Landfill leachate water quality

[0041] project

Influent water quality

pH

7.8

Chroma / fold

800

SS / (mg·L- 1 )

650

BOD 5 / (mg·L- 1 )

1218

COD / (mg·L- 1 )

5650

TP / (mg·L- 1 )

20

TN (mg·L- 1 )

1632

NH 4+ -N / (mg...

Embodiment 2

[0058]The feature of this embodiment is that it also includes a sludge treatment step: collecting the remaining sludge of the ABR, MBR system, and overfrequency vibrating membrane system, concentrating and dehydrating it, and transporting it to a landfill to be buried together with the garbage. The amount of residual sludge in the anaerobic part is about 1.3m 3 / d, the remaining sludge volume of the MBR system is about 10.9m 3 / d, about 45.0m concentrated solution of super frequency vibrating membrane system 3 / d, about 57.2m in total 3 / d. Others are the same as in Example 1.

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Abstract

The invention discloses a landfill leachate treatment method based on a high-frequency vibration membrane. The landfill leachate treatment method comprises the following steps: (1) regulating water flow, balancing water quality and precipitating a part of SS for landfill leachate through a regulating tank; (2) feeding sewage into a zigzag anaerobic reactor for treatment; (3) sequentially feeding the sewage into an anoxic tank for denitrification treatment, and an aerobic tank for nitrification treatment; and feeding the sewage into an MBR (Membrane Bio-reactor) for intercepting sludge, bacteria and organic matter; and (4) feeding the sewage into a high-frequency vibration membrane system for deep treatment; filtering the sewage by using a hollow filter membrane assembly, and controlling amplitude of vibration to be 0.1-4cm, and vibration frequency to be 10-60Hz by using a high-frequency vibration driving system. The landfill leachate treatment method disclosed by the invention is stable and reliable in operation and good in effluent quality, COD (Chemical Oxygen Demand) is less than or equal to 60mg / L, BOD (Biochemical Oxygen Demand) 5 is less than or equal to 20mg / L, chromaticity is less than or equal to 30 times, meanwhile the landfill leachate treatment method also solves the problems that the membrane is easy to jam, and high in replacement frequency.

Description

technical field [0001] The invention relates to a method for treating landfill leachate, in particular to a method for treating landfill leachate based on a high-frequency vibrating membrane, and belongs to the technical field of sewage treatment. Background technique [0002] With the advancement of urbanization and the high concentration of population in our country, the growth of urban domestic waste has also increased sharply. According to statistics, in 2011, the 657 municipalities in my country collected and transported 164 million tons of domestic waste, an increase of more than five times compared to 1979, with an average annual growth rate of more than 6.0%, and its composition is becoming increasingly complex. Sanitary landfill is the most widely used to deal with municipal solid waste. During the stacking process of waste landfill, due to the water contained in the waste itself or the water generated by microbial degradation, as well as rainwater leaching, surface...

Claims

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Application Information

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IPC IPC(8): C02F9/14
Inventor 邓一荣肖荣波
Owner GUANGDONG PROVINCIAL ACADEMY OF ENVIRONMENTAL SCI
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