Bioelectrochemical system and UASB coupled wastewater treatment device and method thereof

A technology of bioelectrochemistry and wastewater treatment, applied in the direction of electrochemical water/sewage treatment, electrochemical biocombination treatment, biological water/sewage treatment, etc. Consumption, promote the effect of reduction conversion degradation

Active Publication Date: 2017-07-14
ZHEJIANG UNIV
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  • Abstract
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  • Application Information

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However, the coupled system lacks a

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  • Bioelectrochemical system and UASB coupled wastewater treatment device and method thereof
  • Bioelectrochemical system and UASB coupled wastewater treatment device and method thereof

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[0024] The specific structure of the device in this embodiment is as described above, and will not be repeated here. The above-mentioned device was used to start the anaerobic reactor, and three sets of wastewater treatment devices were operated for comparison. The parameters of the device are as follows; the upper inner diameter of the UASB reactor is 19cm, the lower inner diameter is 11cm, the height is 50cm, the total volume is 6.6L, and the effective volume is 6.38L. The treated wastewater is wastewater containing chlorinated nitrobenzene.

[0025] Among the three groups of devices: R1 group is the traditional UASB reactor (excluding bioelectrode system), R2 group is the wastewater treatment device of the present invention whose cathode potential is controlled at -450mV, and R3 group is the invention whose cathode potential is controlled at -660mV Wastewater treatment plant. The three sets of reactors (R1, R2, R3) have a hydraulic retention time of 24h and an organic loa...

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Abstract

The invention discloses a cathodic potential regulation-based bioelectrochemical coupled upflow anaerobic biological reaction device and a use method thereof. In the device, an annular electrode is arranged in the sludge layer of an upflow anaerobic bioreactor, and a bioelectrode system provides electrons with high energy for microorganisms nearby a cathode in the cylindrical shell of the upflow anaerobic bioreactor in order to carry out pollutant degradation. A reference electrode is fixed nearby the biological cathode through a fastening bolt, is connected with an online detector and a computer through leading wires, and is used for the real-time monitoring of the cathodic potential of the biological cathode of the coupling reactor. A potential difference needed by the reaction is calculated through a Nernst equation according to Gibbs free energy needed by the degradation of different pollutants, and the applied voltage of the bioelectochemical system is adjusted to control the cathodic potential to be slightly below the range of the potential difference in order to achieve low-energy consumption and high-efficiency degradation of chloronitrobenzene and other non-degradable organic pollutants.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a waste water treatment device and a method thereof coupled with a bioelectrochemical system and a UASB. Background technique [0002] In the field of wastewater biological treatment, anaerobic biological treatment technology has a wide range of applications, low operating energy consumption, high volume load, low sludge production, and biogas production capacity. It is one of the most widely used processes in wastewater treatment processes. Among them, the upflow anaerobic sludge bed reactor (UASB) has become the mainstream process device for anaerobic biological treatment because of its high organic load and removal rate, strong resistance to load shock, temperature, and pH changes. Organic wastewater such as p-chloronitrobenzene and azo dyes also has certain reduction and transformation capabilities, but there are problems such as long start-up period, slow reduction rate, and ...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F101/38
CPCC02F1/46C02F3/005C02F3/2846C02F2101/38
Inventor 朱亮邵俊捷徐向阳陈琳琳高心怡汪彩琴
Owner ZHEJIANG UNIV
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