Apparatus and method for accelerating biodegradation of difficultly degraded pollutant by using residual sludge

A technology that is difficult to biodegrade and excess sludge is applied in water pollutants, chemical instruments and methods, water/sludge/sewage treatment, etc. It can solve problems such as secondary pollution, accelerate biodegradation, and solve sludge treatment. The effect of resource

Active Publication Date: 2018-08-03
SHANGHAI NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In addition, on the other hand, a large amount of excess sludge is produced in many sewage treatment plants every day. At present, the sludge treatmen

Method used

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  • Apparatus and method for accelerating biodegradation of difficultly degraded pollutant by using residual sludge
  • Apparatus and method for accelerating biodegradation of difficultly degraded pollutant by using residual sludge
  • Apparatus and method for accelerating biodegradation of difficultly degraded pollutant by using residual sludge

Examples

Experimental program
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Effect test

Example Embodiment

[0044] Example 1

[0045] In this embodiment, the supernatant of the surplus sludge is used as an electron donor to accelerate the biological treatment of sewage containing quinoline, and an organic acid (oxalic acid) is also added as an electron donor for comparison. The experiment took quinoline as the object to conduct batch degradation experiment. Quinoline is an aromatic compound that is widely used in medicine, printing and dyeing, and rubber industries. In the process of use and manufacturing, it is inevitable that some leakage will enter the natural water body. Once it enters the natural water body, it will cause harm to human health. In addition, quinoline is a relatively difficult-to-degrade organic pollutant, that is, when it is biologically treated by ordinary biodegradation methods, its degradation rate is slow.

[0046] This application example is to use domesticated microorganisms to inoculate the bioreactor to biodegrade quinoline. The specific degradation is di...

Example Embodiment

[0048] Example 2

[0049] This experiment takes p-nitrophenol as the object. P-nitrophenol is mainly used as an intermediate for pesticides, medicines, dyes and other fine chemicals, and it is also an organic pollutant that is difficult to biodegrade. Its biodegradation involves both aerobic and anaerobic conditions.

[0050] In the experiment, the first step is to inoculate the domesticated microorganisms into the bioreactor, and control the operating conditions so that the reaction can have both aerobic and anaerobic zones. When biodegradation is specifically carried out, it is divided into two groups. The first group is to directly biodegrade nitrophenol without adding any electron donor, and the second group is to add the supernatant of the sludge after ultrasonic treatment as the electron donor. The result is as follows Figure 7 Shown. From Figure 7 It can be seen that the addition of the supernatant of the sludge after ultrasonic treatment leads to a 109% increase in t...

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Abstract

The invention relates to an apparatus and a method for accelerating biodegradation of a difficultly degraded pollutant by using residual sludge. According to the invention, the residual sludge contains a lot of organic acids, release of the organic acids in the residual sludge is realized through processing methods of ultrasound, electrical pulse or hydropyrolysis process, the organic acid is usedas an electron donor for accelerating the reactions of single (di) oxygenation and reductive dechlorination on the difficultly degraded pollutant during a biodegradation process, thereby, the biodegradation of the pollutant can be accelerated, and the sludge processing and resource utilization problem can be solved.

Description

technical field [0001] The invention relates to the technical field of excess sludge utilization and refractory biodegradable industrial sewage (waste) water treatment, in particular to a device and method for utilizing excess sludge to accelerate the biodegradation of refractory pollutants. Background technique [0002] With the development of society, people are paying more and more attention to the construction of ecological civilization. The efficient treatment of all kinds of industrial wastewater, especially the industrial wastewater containing difficult-to-biodegradable pollutants has attracted people's great attention. Among them, biodegradation is a method highly respected by people, because biodegradation has good economy and can be widely applied. Among the various refractory pollutants contained in industrial wastewater, most of their biodegradation process involves biological reactions that require electrons, such as single oxygenation reaction, double oxygenat...

Claims

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Application Information

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IPC IPC(8): C02F3/30C02F101/34
CPCC02F3/301C02F2101/34
Inventor 张永明邹莎莎张雨婷王猷珂陆沁园张辰媛朱格李丹妮曾秋宇邢斐斐胡超郑翔吴伟民
Owner SHANGHAI NORMAL UNIVERSITY
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