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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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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 treatment and disposal of all sewage treatment plants in my country is a difficult thing to solve. If it is not treated seriously, it will lead to secondary Pollution

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

Embodiment 1

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

[0046] In this application example, the biodegradation of quinoline is carried out by using domesticated microorganisms to inoculate the bioreactor. The specific degradat...

Embodiment 2

[0049] In this experiment, p-nitrophenol was used as the object. P-nitrophenol is mainly used as an intermediate of fine chemicals such as pesticides, medicines, and dyes, and is also a kind of organic pollutant that is difficult to biodegrade. Its biodegradation involves both aerobic and anaerobic conditions.

[0050] In the experiment, the domesticated microorganisms are first inoculated into the bioreactor, and the operating conditions are controlled so that the reaction can have both an aerobic zone and an anaerobic zone. For specific biodegradation, it is divided into two groups. The first group is the direct biodegradation of nitrophenol without adding any electron donor, the second group is to add the supernatant of the sludge after ultrasonic treatment as the electron donor, the results are as follows Figure 7 shown. from Figure 7 It can be seen that the addition of the supernatant of the sludge after sonication resulted in a 109% increase in the biodegradation r...

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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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