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Composite microorganism preparation and application thereof in waste water treatment

A technology for compound microorganisms and wastewater treatment, applied in biological water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. , the effect of efficient reduction

Active Publication Date: 2012-07-18
福建微水环保股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This has greatly increased the operating costs of sewage treatment projects.

Method used

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  • Composite microorganism preparation and application thereof in waste water treatment
  • Composite microorganism preparation and application thereof in waste water treatment
  • Composite microorganism preparation and application thereof in waste water treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015]The present embodiment is carried out as follows:

[0016] The waste water is a leather waste water in Zhejiang Province. After physical and chemical treatment, the waste water directly enters the biological treatment system. The water quality indicators entering the biological treatment system are as follows:

[0017] COD: 2000--2500 mg / l

[0018] NH 4 + -N: 250 mg / l

[0019] PH value: 8.0—9.5

[0020] Project water volume is 3000 m 3 / d, A (facultative oxygen) / O (aerobic) process, the operating process conditions are as follows:

[0021] Residence time: 48h, facultative 12h, aerobic 36h

[0022] Temperature: 25-35°C

[0023] Aerobic DO: 2~5mg / l

[0024] Put into the biochemical pool the compound microbial preparation whose initial concentration is 1.5‰ (volume ratio) of the treatment volume of the biochemical pool.

[0025] After one-time dosing, after 5-10 days of stable operation, the removal rate of COD in leather wastewater is maintained at about 92.5%, th...

Embodiment 2

[0027] The present embodiment is carried out as follows:

[0028] The wastewater is wastewater containing high concentration of organic nitrogen from a methylamine enterprise in Zhejiang. After being treated by air flotation and degreasing, the wastewater directly enters the biological treatment system. The water quality indicators entering the biological treatment system are as follows:

[0029] COD: 1000--2000 mg / l

[0030] NH 4 + -N: 300--400 mg / l

[0031] TN: 500--800 mg / l

[0032] PH value: 8.5—9.0

[0033] Project water volume is 1000 m 3 / d, A (facultative oxygen) / O (aerobic) process, the operating process conditions are as follows:

[0034] Residence time: 36h, facultative 24h, aerobic 48h

[0035] Temperature: 25-35°C

[0036] Aerobic DO: 2~5mg / l

[0037] Put into the biochemical pool the compound microbial preparation whose initial concentration is 2.0‰ (volume ratio) of the treatment volume of the biochemical pool.

[0038] After one-time dosing, after 10-...

Embodiment 3

[0040] The present embodiment is carried out as follows:

[0041] The wastewater is coking wastewater from a coking plant in Shandong. After being treated by air flotation and degreasing, the wastewater directly enters the biological treatment system. The water quality indicators entering the biological treatment system are as follows:

[0042] COD: 3000--5000 mg / l

[0043] NH 4 + -N: 200--400 mg / l

[0044] PH value: 7.5---9.0

[0045] The project water volume is 2300 m 3 / d, A (anaerobic) / A (facultative oxygen) / O (aerobic) process, the operating process conditions are as follows:

[0046] Residence time: 76h, anaerobic 8h, facultative oxygen 20h, aerobic 48h

[0047] Temperature: 25-35°C

[0048] DO: 2~5mg / l

[0049] Put into the biochemical pool the compound microbial preparation whose initial concentration is 2.5‰ (volume ratio) of the treatment volume of the biochemical pool.

[0050] After one-time dosing, after 30-60 days of stable operation, the removal rate of...

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Abstract

The invention relates to a composite microorganism preparation and application thereof in waste water treatment. Adopted strains can be obtained conveniently by separation from the nature in a conventional strain identification separation method by those skilled in the art, or are publicly purchased through commercial channels. The composite microorganism preparation is obtained after each culture solution and microorganism carriers are mixed according to a certain proportion. The composite microorganism preparation can be directly placed in a biochemical reactor in one time, building of a microorganism-system integral food chain is effectively promoted, utilization of nutrient substance in water by the microorganisms is promoted, and efficient removal of pollutants such as organic matter(CODcr) and ammonia nitrogen is achieved.

Description

technical field [0001] The invention relates to a compound microbial preparation and its application in wastewater treatment. Background technique [0002] With the continuous development of human society and the continuous improvement of productivity, the pollution of human production and life to the environment is also increasing. A large amount of unqualified sewage is discharged into the environment, exacerbating the shortage of water resources. Microbial treatment technology is the most effective and economical method to treat sewage. However, the existing microbial treatment system in the industry mainly considers the optimization of processes such as contact oxidation, UASB, oxidation ditch, biofilter, etc., while ignoring the research on microorganisms as the main body of treatment. Most of these processes use natural Wild microorganisms produced under conditions. The activity of wild microorganisms is not high, resulting in low treatment efficiency, long reside...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34
Inventor 徐军富龚清华舒建峰
Owner 福建微水环保股份有限公司
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