Anaerobic reactor and sludge anaerobic digestion process using anaerobic reactor

An anaerobic reactor and sludge technology, which is applied in sludge treatment, biological sludge treatment, water/sludge/sewage treatment, etc., can solve the problem of low decomposition efficiency of organic matter in sludge, and speed up anaerobic digestion , Improve the decomposition rate and shorten the reaction cycle

Inactive Publication Date: 2018-12-18
JIANGSU TENGYE NEW MATERIALS
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Problems solved by technology

However, sludge is easily deposited at the bottom of the anaerobic reactor, which makes the decomposition efficiency of sludge organic matter in the anaerobic reactor low, and produces less biogas, biogas residue and biogas slurry

Method used

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  • Anaerobic reactor and sludge anaerobic digestion process using anaerobic reactor

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Embodiment 1

[0037] Embodiment 1: a kind of anaerobic reactor, such as figure 1 As shown, the anaerobic reactor 1 is divided into a biogas zone 11 and a reaction zone 12 from top to bottom, and the stirring device 2 is located at the bottom of the anaerobic reactor 1 . The stirring device 2 includes a driving motor 23 , a stirring shaft 21 installed coaxially with the rotor of the driving motor 23 , and a stirring blade 22 fixed on the stirring shaft 21 . The stirring blade 22 disperses and stirs the sludge at the bottom of the reaction zone 12, avoiding sludge deposition at the bottom of the reaction zone 12, thereby accelerating the decomposition rate of organic matter in the sludge, thereby improving the efficiency of sludge anaerobic digestion.

[0038] Such as figure 1 As shown, a cutting knife 221 is fixedly connected to the stirring blade 22, and the cutting knife 221 can chop up large pieces of sludge during the rotation of the stirring blade 22, thereby speeding up the reaction s...

Embodiment 2

[0044] Embodiment 2: a kind of sludge anaerobic digestion process, such as figure 1 Shown, comprise the anaerobic reactor among the embodiment 1, comprise the following steps:

[0045] S1. Sludge pretreatment. The sludge transport vehicle dumps the sludge with a moisture content of 75% into the sludge blending tank, and adds primary condensed water and secondary condensed water into the sludge blending tank to obtain a moisture content of 80% %~90% of the pretreated sludge;

[0046] S2. Pump the pretreated sludge to a dedicated anaerobic digestion system. The anaerobic digestion system includes several anaerobic reactors 1, and each anaerobic reactor 1 includes at least one set of stirring devices 2, thereby generating digestion liquid and biogas;

[0047] S3. Send the digested liquid to the centrifugal dehydration unit, and dehydrate it through the centrifugal dehydrator to obtain biogas residue and biogas slurry. The biogas residue is sent to the brick factory to make bric...

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Abstract

The invention discloses an anaerobic reactor as well as a sludge anaerobic digestion process using the anaerobic reactor, which and belongs to the technical field of sludge treatment, and aims at solving the problem in the prior art that the sludge anaerobic digestion efficiency is low. The anaerobic reactor is characterizedin thatAccording to a key point of the technical scheme, the interior of the anaerobic reactor is divided into a biogas area and a reaction area from top to bottom, a stirring apparatus is located on the bottom of the reaction area, and the stirring apparatus comprises a stirring shaft, a driving motor driving the stirring shaft to rotate and stirring vanes fixed on the stirring shaft. The anaerobic reactor is suitable for the pretreatment of anaerobic digestion of sludge for producing a brick.

Description

technical field [0001] The invention relates to sludge treatment technology, in particular to an anaerobic reactor and a sludge anaerobic digestion process using the anaerobic reactor. Background technique [0002] Sludge is the concentrate separated from the sedimentation of the water body when urban or regional sewage treatment plants treat sewage, and then becomes viscous mud after dehydration. In China, this kind of mud is generally dehydrated to a solid content of about 20%. This kind of sludge contains more organic matter and microbial debris, has a foul smell, poor fluidity, and is difficult to store. [0003] At present, domestic sludge disposal methods mainly include: comprehensive utilization, landfill and throwing into the sea. Comprehensive utilization mainly includes utilization of farmland and forest land, utilization of sludge incineration products, low-temperature pyrolysis to produce combustibles, anaerobic digestion, etc. The use of sludge in farmland and...

Claims

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Application Information

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IPC IPC(8): C02F11/04C02F11/12C02F101/30
CPCC02F11/04C02F11/127C02F2101/30
Inventor 黄鹤潘浩陈思良
Owner JIANGSU TENGYE NEW MATERIALS
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