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Sewage biological reaction device for preparing hydrogen from sugar-containing waste water through fermentation and process thereof

A sewage biological and reaction device technology, which is applied in the field of anaerobic reactors, can solve the problems such as hindering the stable operation of anaerobic reactors with stable output and decreasing gas production, and achieve stable H2 production rate and reduce sludge volume. , avoid the effect of excessive growth and accumulation

Inactive Publication Date: 2017-01-25
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the excessive growth and accumulation of microorganisms in the bed caused a sharp drop in gas production, even when the liquid in the fermentor was continuously unblocked
These problems hinder the H 2 The stable output and the stable operation of the anaerobic reactor

Method used

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  • Sewage biological reaction device for preparing hydrogen from sugar-containing waste water through fermentation and process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Take the prepared simulated sugary wastewater (COD=4500mg / L) with sucrose as an example:

[0045] Step 1. Microbial inoculation: firstly, the sugary wastewater was fermented under natural conditions (25°C) for 4 days in a sealed environment (NaHCO was used for pH 3 and hydrochloric acid to adjust to 6-6.5), then the fermented sugar-containing wastewater is passed into the reactor through the water inlet, and circulated at a rate of 1.7L / h for 5 days to complete the inoculation of microorganisms.

[0046] Step 2. After adjusting the pH, the sugary wastewater enters the reactor through the water distributor through the water inlet to ensure that the wastewater flows into the reaction unit evenly. The flow rate is gradually increased from 1.0L / h to 2.0L / h at a rate of 0.1L every two hours. . After 3 days, the gas yield reached a stable value, in which hydrogen accounted for 65-70% of the total gas (the remaining gas was carbon dioxide). The hydrogen production in the rea...

Embodiment 2

[0050] Take the prepared simulated sugary wastewater (COD=3000mg / L) with fructose as the substrate as an example:

[0051] Step 1. Microbial inoculation: firstly, the sugary wastewater was fermented under natural conditions (25°C) for 4 days in a sealed environment (NaHCO was used for pH 3 and hydrochloric acid to adjust to 6-6.5), then the fermented sugar-containing wastewater is passed into the reactor through the water inlet, and circulated at a rate of 1.7L / h for 5 days to complete the inoculation of microorganisms.

[0052] Step 2. After adjusting the pH, the sugary wastewater enters the reactor through the water distributor through the water inlet to ensure that the wastewater flows into the reaction unit evenly. The flow rate is gradually increased from 1.0L / h to 2.0L / h at a rate of 0.1L every two hours. . After 3 days, the gas yield reached a stable value, in which hydrogen accounted for 65-70% of the total gas (the remaining gas was carbon dioxide). The hydrogen pro...

Embodiment 3

[0056] Take the prepared simulated sugary wastewater (COD=6000mg / L) with glucose as the substrate as an example:

[0057] Step 1. Microbial inoculation: firstly, the sugary wastewater was fermented under natural conditions (25°C) for 4 days in a sealed environment (NaHCO was used for pH 3 and hydrochloric acid to adjust to 6-6.5), then the fermented sugar-containing wastewater is passed into the reactor through the water inlet, and circulated at a rate of 1.7L / h for 5 days to complete the inoculation of microorganisms.

[0058] Step 2. After adjusting the pH, the sugary wastewater enters the reactor through the water distributor through the water inlet to ensure that the wastewater flows into the reaction unit evenly. The flow rate is gradually increased from 1.0L / h to 2.0L / h at a rate of 0.1L every two hours. . After 3 days, the gas yield reached a stable value, in which hydrogen accounted for 65-70% of the total gas (the remaining gas was carbon dioxide). The hydrogen prod...

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Abstract

The invention discloses a sewage biological reaction device for producing hydrogen by fermenting sugar-containing waste water, which comprises a reactor, and the reactor is sequentially divided from top to bottom by first partitions and second partitions arranged up and down in the reactor. It consists of three parts: the water inlet and exhaust unit, the reaction unit and the water outlet unit. The reactor is located on the top of the water inlet and exhaust unit with an exhaust port, and the reactor is located on the side wall of the water inlet and exhaust unit. There is a water inlet, and the reactor is provided with a water outlet on the side wall of the water outlet unit, and the reactor is provided with a mud discharge port at the bottom of the water outlet unit. Between the first partition and the second partition Filled with polyvinyl chloride filler; the invention uses a downflow reaction device to treat high-concentration organic wastewater, and at the same time produces hydrogen through anaerobic biological fermentation.

Description

technical field [0001] The invention belongs to the technical field of anaerobic reactors, and in particular relates to a sewage biological reaction device for hydrogen production by fermenting sugar-containing waste water and a process thereof. Background technique [0002] Due to the increasingly serious global environmental problems, especially the emergence of the greenhouse effect has attracted people's attention. In this international environment, it is imperative for clean energy to become a substitute for traditional fossil energy, and hydrogen energy has the advantages of high heat, recyclability, cleanliness and pollution-free, and is considered to be an ideal energy carrier in the future. Anaerobic biological process is used to treat a large amount of acidic organic wastewater discharged from pharmaceuticals, papermaking and food processing, which not only treats high-concentration organic wastewater, but also recovers hydrogen. Then achieve the combination of cl...

Claims

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Application Information

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IPC IPC(8): C12M1/34C12M1/107C12P3/00C02F3/28
CPCC12M21/04C02F3/28C12M23/34C12M25/18C12M29/06C12M29/18C12M41/00C12P3/00
Inventor 李轶吴海楠张弛牛丽华王磊
Owner HOHAI UNIV