Preparation method and application of sludge-based activated charcoal

A technology of activated carbon and sludge, applied in sludge treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problems of limited decontamination efficiency, secondary pollution of the environment, high amount of residual sludge, etc., to achieve Inexpensive preparation, high adsorption, and enhanced decontamination performance

Inactive Publication Date: 2015-09-30
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of secondary pollution of the environment caused by the high amount of residual sludge produced in the existing sewage treatment plant, and also solve the problem of limited de

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The method for preparing sludge-based activated carbon from membrane bioreactor sludge with zero discharge of resources is carried out according to the following steps:

[0026] 1. Municipal sewage enters the membrane bioreactor, and after biochemical reaction, excess sludge is produced; the operating parameters of the membrane bioreactor are as follows: 1) The membrane module is an ultrafiltration membrane, and the membrane type is a hollow fiber membrane or a tubular membrane or Flat membrane, the material of the membrane is polyvinylidene fluoride or polyvinyl chloride or polyethylene, the pore size of the membrane is 0.01-0.1μm; 2) The hydraulic retention time is 2-12h (hour), and the activated sludge concentration is 3-20g / L, the sludge residence time is 10-60d (days); 3) The function of aeration is: one is to supply oxygen to the microorganisms in the membrane bioreactor, and the other is to wash and clean the membrane filaments of the membrane module to reduce th...

Embodiment 2

[0031] The application of sludge-based activated carbon-based enhanced membrane bioreactor urban sewage decontamination efficiency and membrane pollution control is carried out according to the following steps: 2g / L sludge-based activated carbon material is added for the first time in the initial stage of membrane bioreactor operation, and then During the operation, an appropriate amount of sludge-based activated carbon material is added every day to supplement the loss caused by the discharge of excess sludge. Due to the different age of sludge, the amount of excess sludge discharged every day is different, resulting in the amount of sludge discharged every day. The quality of sludge-based activated carbon is different, so the daily amount of sludge-based activated carbon should be supplemented according to the sludge age. The urban sewage to be treated enters the reactor, and is treated by the adsorption of sludge-based activated carbon materials and the biological synergy of...

Embodiment 3

[0033] The difference between this embodiment and specific embodiment 2 is that 10g / L of sludge-based activated carbon material is added at the initial stage of operation, and 5g / L of sludge-based activated carbon material is added once every month thereafter. Other steps and parameters are the same as in Embodiment 2.

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Abstract

The invention discloses a preparation method of sludge-based activated charcoal, and further discloses application and an application method of the sludge-based activated charcoal. The invention particularly relates to a method which can be used for realizing zero emission and resource recovery of sludge produced by urban sewage plants, preparing a low-cost and efficient sludge-based activated charcoal material and recycling sludge to be reused by membrane bioreactors for strengthening urban sewage treatment performance and membrane fouling control. According to the method, organic substances contained in sludge produced by the membrane bioreactor technology from urban sewage plants are fully utilized, and a certain chemical means is adopted for preparing an adsorbent material with a porous structure from excess sludge; at the same time, the adsorbent material prepared from the sludge can be added to membrane bioreactors for strengthening the decontamination performance and retarding membrane fouling, so that the both the purpose of waste resource utilization and the purpose of dealing with waste by waste are achieved, a far-reaching influence on urban sewage treatment and sludge disposal technology and a quite high utility value are achieved.

Description

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Claims

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Application Information

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IPC IPC(8): C02F3/12C02F11/00B01J20/20B01J20/30
CPCY02W10/10
Inventor 潘志辉
Owner GUANGZHOU UNIVERSITY
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