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Method for treating wastewater by utilizing composite microbial preparation

A technology for composite microorganisms and wastewater treatment, applied in biological water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve problems such as increasing the operating cost of sewage treatment projects, and achieve the promotion of utilization and metabolic decomposition , Efficient reduction effect

Inactive Publication Date: 2011-01-12
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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  • Method for treating wastewater by utilizing composite microbial preparation
  • Method for treating wastewater by utilizing composite microbial preparation
  • Method for treating wastewater by utilizing composite microbial preparation

Examples

Experimental program
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Effect test

Embodiment 1

[0020] This embodiment is carried out as follows:

[0021] The wastewater is a certain leather wastewater in Fujian. After physical and chemical treatment, the wastewater directly enters the biological treatment system. The water quality indicators of the biological treatment system are as follows:

[0022] COD: 2000--2500mg / l

[0023] NH 4 + -N: 190mg / l

[0024] PH value: 8.0-9.5

[0025] The project water volume is 4000m 3 / d, A (contemporaneous oxygen) / O (aerobic) process, the operating process conditions are as follows:

[0026] Residence time: 48h, facultative aerobic 12h, aerobic 48h

[0027] Temperature: 25-35℃

[0028] Aerobic DO: 2~5mg / l

[0029] The dosage of the carrier: 1.5% of the pool volume

[0030] Put a compound microbial agent with an initial concentration of 1.5‰ of the biological tank processing volume into the biochemical tank, and put 1% of the tank volume in powdered diatomaceous earth or powdered activated carbon. The particle size of powdered diatomaceous earth or p...

Embodiment 2

[0034] This embodiment is carried out as follows:

[0035] The wastewater is ammonia-containing wastewater from a synthetic ammonia company in Hefei. 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:

[0036] COD: 400--600mg / l

[0037] NH 4 + -N: 300--400mg / l

[0038] PH value: 8.5-9.0

[0039] The project water volume is 2000m 3 / d, A (contemporaneous oxygen) / O (aerobic) process, the operating process conditions are as follows:

[0040] Residence time: 36h, facultative aerobic 12h, aerobic 24h

[0041] Temperature: 25-35℃

[0042] Aerobic and aerobic DO: 2~5mg / l

[0043] Dosing amount of carrier: 1.0% of pool volume

[0044] Put the compound microbial agent with an initial concentration of 2.0‰ of the biological tank processing volume into the biochemical tank, and put in powder diatomaceous earth or powdered activated carbon of 2% of the t...

Embodiment 3

[0048] This embodiment is carried out as follows:

[0049] The wastewater is coking wastewater from a coking plant in Shijiazhuang. After being treated by air flotation and degreasing, the wastewater directly enters the biological treatment system. The water quality indicators of the biological treatment system are as follows:

[0050] COD: 5000--6000mg / l

[0051] NH 4 + -N: 200--400mg / l

[0052] PH value: 7.5---9.0

[0053] The project water volume is 1500m 3 / d, A (anaerobic) / A (facultative oxygen) / O (aerobic) process, the operating process conditions are as follows:

[0054] Residence time: 76h, anaerobic 8h, facultative aerobic 20h, aerobic 48h

[0055] Temperature: 25-35℃

[0056] DO: 2~5mg / l

[0057] Carrier dosage: 2% of the pool volume

[0058] Put the compound microbial preparation with the initial concentration of 3.0‰ of the biological tank processing volume into the biochemical tank, and put 1.5% of the tank volume into powdered diatomaceous earth or powdered activated carbon. T...

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Abstract

The invention discloses a method for treating wastewater by utilizing a composite microbial preparation, which comprises the following steps of: putting the composite microbial preparation in an amount of 0.15 to 0.3 percent based on the treatment volume of a biochemical basin into the biochemical basin, and putting diatomite in powder or powdery activated carbon in an amount of 1 to 2 percent based on the volume of the basin into the basin. Through the method, the composite microbial preparation and an activated carbon filler can be directly put and added into the biochemical reactor once, thereby effectively promoting the establishment of an entire food chain of a microbial system and the complete degradation of various pollutants, promoting microbes to utilize nutrient substances in water and realizing the high-efficiency removal of the pollutants, such as organic matters (CODcr), ammonia nitrogen and the like.

Description

Technical field [0001] The invention relates to a method for treating wastewater by using a composite microbial preparation. Background technique [0002] With the continuous development of human society and the continuous improvement of the level 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 way to treat sewage. However, the existing microbial treatment system industry mainly considers the optimization of the process such as contact oxidation, UASB, oxidation ditch, biological filter, etc., while ignoring the research on the microorganisms as the main body of the treatment. Most of these processes are used in nature. Wild microorganisms produced under conditions. The activity of wild microorganisms is not high, resulting in low treatment ef...

Claims

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Application Information

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IPC IPC(8): C02F3/34C02F3/30
Inventor 徐军富龚清华徐亨军舒剑峰
Owner 福建微水环保股份有限公司
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