Bioelectrochemistry auxiliary anaerobic composting device capable of improving putrescibility of dewatered sludge and startup operation method thereof

A technology of bioelectrochemical and anaerobic composting, which is applied in the field of bioelectrochemical assisted anaerobic composting device and its start-up operation to improve the maturity of dewatered sludge, and can solve the problems of slow composting progress, long cycle, and poor decomposition effect. Achieve the effect of increasing the degree of decomposition, accelerating the process of anaerobic composting, and shortening the cycle of anaerobic composting

Active Publication Date: 2015-06-03
HARBIN INST OF TECH
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  • Summary
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  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the technical problems of slow composting progress, long period and poor decomposing effect of the existing anaerobic composting method, and provides a bioelectrochemical assisted anaerobic composting device and its start-up operation for improving the dewatering sludge decomposing degree method

Method used

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  • Bioelectrochemistry auxiliary anaerobic composting device capable of improving putrescibility of dewatered sludge and startup operation method thereof
  • Bioelectrochemistry auxiliary anaerobic composting device capable of improving putrescibility of dewatered sludge and startup operation method thereof

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specific Embodiment approach 1

[0010] Specific embodiment 1: The bioelectrochemical assisted anaerobic composting device for improving the maturity of dewatered sludge in this embodiment includes anaerobic composting chamber 1, electrochemical electrode chamber 2, electricity storage or electrical appliance 3, and anaerobic composting chamber 1 Located in the center, it is formed by the space surrounded by the inner shell 1-1, and the electrochemical electrode chamber 2 is formed by the space between the outer shell 2-1 and the inner shell 1-1; the inner shell 1-1 of the anaerobic composting chamber 1 The side wall is a proton exchange membrane. In the anaerobic composting chamber 1, the first graphite brush electrode 1-2 is set as an auxiliary anaerobic composting electrode. Electrochemically active bacteria are attached to the first graphite brush electrode 1-2. 1 is also provided with a reference electrode 1-3 and a temperature measuring probe 1-4, and a gas collection port 1-5 is provided on the top of t...

specific Embodiment approach 2

[0012] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the second graphite brush electrodes 2-2 can be provided with 2-5 pieces and used in parallel. Others are the same as in the first embodiment.

[0013] The setting of parallel electrodes is beneficial to improve the electron transfer efficiency of the annular electrochemical electrode chamber 2 and improve the electricity production capacity of the bioelectrochemical assisted anaerobic composting device.

specific Embodiment approach 3

[0014] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the heating cable 4 is fixed around the outer casing 2 - 1 and placed in an incubator 5 . Others are the same as those in Embodiment 1 or 2.

[0015] According to the temperature control requirements of the system, the temperature control of the system is facilitated by using the heating cable 4 and the incubator 5 .

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Abstract

The invention relates to a bioelectrochemistry auxiliary anaerobic composting device capable of improving putrescibility of dewatered sludge and a startup operation method thereof, relating to an anaerobic composting device and aiming at solving the technical problems of slow composting progress, long period and poor composting maturity in the existing anaerobic composting methods. The composting device comprises an anaerobic composting chamber, an electrochemical electrode chamber and an electricity storage or consumption device, wherein the anaerobic composting chamber is positioned in the center of a reactor, formed by a space surrounded by an internal shell and provided with a first graphite brush electrode, and the side wall of the internal shell is a proton exchange membrane; and the electrochemical electrode chamber is formed by spaces between an outer shell and the internal shell of the reactor and provided with a second graphite brush electrode, and an electrode liquid is added in the electrochemical electrode chamber; and the first graphite brush electrode and the second graphite brush electrode are connected by a copper conducting wire to form a closed circuit. The composting device disclosed by the invention can compost dewatered sludge in 35-40 days with the composting maturity 28%-30% higher than that produced according to the existing composting methods, and is used for anaerobic composting.

Description

technical field [0001] The invention relates to an anaerobic composting device and a start-up operation method thereof. Background technique [0002] With the continuous development of water treatment technology, the amount of sewage treatment has increased rapidly, and the amount of sludge produced in the process of sewage treatment has continued to increase. Untreated sludge has high water content, high organic content, and contains a large amount of biochemical toxic and harmful substances. If the material is directly discharged into the environment, it will cause great harm. Therefore, how to treat sludge efficiently, quickly and economically has become a difficult problem in the environmental field. Dewatered sludge is the sludge produced after the residual sludge in the sewage treatment plant is dehydrated in the dehydration room. At present, the treatment and disposal methods of dewatered sludge include incineration, landfill, digestion, composting and so on. The co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05F17/02C05F7/00
CPCY02A40/20Y02W30/40
Inventor 赵庆良于航姜珺秋王琨张云澍丁晶
Owner HARBIN INST OF TECH
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