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
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[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...
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[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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