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Treatment method for cellulose fermentation wastewater

A technology of fermentation wastewater and treatment method, which is applied in neutralization water/sewage treatment, reduced water/sewage treatment, water/sewage multi-stage treatment, etc., can solve the problem of increasing total wastewater discharge, high equipment investment and operating costs, Waste water resources and other issues to achieve the effect of being conducive to recycling, low operating costs, and environmental protection

Inactive Publication Date: 2009-02-18
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is that the present invention overcomes the defects of high equipment investment and operating costs in the existing wastewater treatment technology or wastes water resources and increases the total amount of wastewater discharge, and establishes a set of treatment for cellulose fermentation wastewater for the first time. This method can not only meet the treatment requirements and protect the environment, but also the wastewater can be recycled after treatment, saving cost and water resources, and has the outstanding characteristics of stable and reliable treatment effect, simple and easy operation, low operating cost, and easy industrial application.

Method used

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  • Treatment method for cellulose fermentation wastewater

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Experimental program
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Effect test

Embodiment 1

[0033] Cellulose fermentation waste water (COD 42436mg / L) was taken for testing. Wastewater enters the iron-carbon reaction tank, the amount of iron filings is 100g / L, and activated carbon particles are added according to the iron-carbon ratio (W / W) of 1:1, the aeration rate is 50ml / min, and the reaction time is 90min. Then the wastewater enters the neutralization sedimentation tank, the pH is adjusted to 9.0, and after standing for 6 hours, it enters the hydrolysis acidification tank, and the residence time is 12 hours. Then the wastewater enters the anaerobic fermentation tank, and the pH in the control system is 6.9. After staying for 3 days, it enters the two-stage SBR The pools are treated with aerobic treatment. Each SBR pool is aerated for 8 hours and drained for 4 hours, with a residence time of 12 hours. After passing through the secondary settling tank, the residence time is 3 hours, and the water is discharged.

[0034] After the cellulose fermentation wastewater is...

Embodiment 2

[0036] Take cellulose fermentation waste water (COD58013mg / L) for experiment. The waste water enters the iron-carbon reaction tank, the amount of iron filings is 200g / L, the activated carbon particles are added according to the iron-carbon ratio (W / W) of 3:1, the aeration rate is 100ml / min, and the reaction time is 150min. Then the wastewater enters the neutralization sedimentation tank, the pH is adjusted to 9.0, and after standing for 6 hours, it enters the hydrolysis acidification tank, and the residence time is 6 hours. Then the wastewater enters the anaerobic fermentation tank, and the pH in the control system is 7.1. After staying for 8 days, it enters the two-stage SBR The pools are treated with aerobic treatment. Each SBR pool is aerated for 6 hours and drained for 2 hours, with a residence time of 8 hours. After passing through the secondary settling tank, the residence time is 4 hours, and the water is discharged.

[0037] After the wastewater is treated above, the C...

Embodiment 3

[0039] Take cellulose fermentation waste water (COD 30530mg / L) for experiment. Wastewater enters the iron-carbon reaction tank, the amount of iron filings is 50g / L, and activated carbon particles are added according to the iron-carbon ratio (W / W) of 0.5:1, the aeration rate is 200ml / min, and the reaction time is 30min. Then the wastewater enters the neutralization sedimentation tank, the pH is adjusted to 10.0, and after standing for 1 hour, it enters the hydrolysis acidification tank, and the residence time is 48 hours. Then the wastewater enters the anaerobic fermentation tank, and the pH in the control system is 6.5. After staying for 1 day, it enters the two-stage SBR The pool is subjected to aerobic treatment. Each SBR pool is aerated for 10 hours and drained for 4 hours as a cycle, with a residence time of 14 hours. After passing through the secondary sedimentation tank, the residence time is 5 hours, and the water is discharged.

[0040] After the cellulose fermentation...

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Abstract

The invention discloses a treatment method for cellulose fermentation wastewater. The steps are as follows: firstly, the wastewater is processed with the iron-carbon reaction tank treatment; secondly, the wastewater is processed with hydrolysis acidification-anaerobic fermentation process; thirdly, the wastewater is processed with two-stage sequencing batch activated sludge treatment, and then the treatment is completed. The treatment method not only can achieve the treatment requirements and protect environment, but also the treated wastewater can be reused for cellulose fermentation, through which the cost and water source can be saved. The treatment method is characterized in that the process effect is stable and reliable, the operation is simple and convenient, the operation cost is low, the method is accessible for industrial application and so on.

Description

technical field [0001] The invention relates to a treatment method of chemical wastewater, in particular to a treatment method of cellulose fermentation wastewater. Background technique [0002] The energy industry is the foundation of the national economy and is extremely important to social and economic development and improvement of people's quality of life. With the improvement of human living standards, people rely more and more on energy. However, due to the non-renewability of fossil fuels and their limited reserves, fossil energy has been depleted day by day, and the environmental crisis has become increasingly obvious. Nowadays, seeking and developing new energy sources, especially renewable energy sources with little environmental pollution, has attracted global attention. [0003] Biomass energy is an important renewable energy in the future energy field, and as the only renewable energy that can be converted into liquid fuel, it is being paid more and more atten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F1/70C02F1/66C02F3/28
Inventor 朱振兴颜涌捷张素平许庆利亓伟章冬霞
Owner EAST CHINA UNIV OF SCI & TECH
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