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Method for strengthening anaerobic digestion treatment of molasses alcohol wastewater

A technology for molasses alcohol wastewater and anaerobic digestion, which is applied in anaerobic digestion treatment, food industry wastewater treatment, natural water treatment and other directions, to achieve good research and application prospects, improve efficiency, and be easy to operate.

Inactive Publication Date: 2017-05-31
JIANGNAN UNIV
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Problems solved by technology

And by adding nanomaterials to the anaerobic digestion system to reduce or eliminate H 2 S inhibition has been less reported

Method used

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  • Method for strengthening anaerobic digestion treatment of molasses alcohol wastewater
  • Method for strengthening anaerobic digestion treatment of molasses alcohol wastewater
  • Method for strengthening anaerobic digestion treatment of molasses alcohol wastewater

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Experimental program
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Embodiment 1

[0037] After the anaerobic digestion reaction experiment of embodiment 1 finishes, calculate gas production rate according to the degradation amount of COD, every group produces biogas rate and methane content in gas as image 3 . Depend on image 3It can be seen that at the end of the reaction, the gas production rate of the blank group was 275.3mL / g COD, and the methane content in the gas was 39.2%. , 299.3mL / gCOD, 272.0mL / gCOD, 310.9mL / gCOD, 279.8mL / gCOD and 54.0%, 53.5%, 55%, 55.4%, 58%, 53.5%. It shows that adding NZVI to anaerobic digestion system can reduce the inhibitory effect of hydrogen sulfide on MPB. Group F had the highest gas production rate, 35.6mL / g COD higher than the blank group, and the highest methane content in the gas, 58%, 18.8% higher than the blank group. It shows that when the addition amount of NZVI is 0.50g, the anaerobic digestion treatment effect of molasses alcohol wastewater is the best.

[0038] Example 4: Changes in sulfate and sulfide co...

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Abstract

The invention discloses a method for strengthening anaerobic digestion treatment of molasses alcohol wastewater, and belongs to the technical field of wastewater treatment control and environmental protection purification treatment. According to the method disclosed by the invention, nano zero valent iron is added to an anaerobic digestion system to strengthen the treatment effect of the molasses alcohol wastewater, thereby not only effectively handling the molasses alcohol wastewater and realizing the harmlessness and reuse of the molasses alcohol wastewater, but also improving the production efficiency of methane of anaerobic digestion of the molasses alcohol wastewater.

Description

technical field [0001] The invention relates to a method for strengthening the anaerobic digestion treatment of molasses alcohol wastewater, and belongs to the technical fields of wastewater treatment control and environmental protection purification treatment. Background technique [0002] Molasses alcohol wastewater refers to the waste liquid discharged after molasses fermentation and distillation of alcohol, with organic pollutant concentration (COD80000-130000mg / L) and sulfate concentration (SO 4 2- 8000-10000mg / L) high characteristics. Molasses alcohol wastewater has a large amount of discharge and a high content of organic pollutants. It generally contains a large amount of carbohydrates, fats, proteins, cellulose and hemicellulose. If it is directly discharged into rivers or lakes without treatment, it will cause eutrophication of the water body. , seriously pollute the environment. [0003] At present, the treatment methods of molasses alcohol wastewater mainly in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28C02F3/34C02F103/32
CPCC02F3/28C02F3/34C02F2101/101C02F2103/325C02F2209/285C02F2303/10Y02E50/30
Inventor 赵明星陈阳阮文权
Owner JIANGNAN UNIV
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