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A kind of aerobic granular sludge sewage treatment method with denitrification effect and special equipment

A technology of aerobic granular sludge and sewage treatment method, which is applied in the directions of aerobic and anaerobic process treatment, etc., can solve the problem of long cultivation time of aerobic granular sludge, high equipment investment and operating cost, and no denitrification effect. problems, to achieve the effect of good sewage treatment effect, excellent sedimentation, and increase the effect of oxygen dissolution

Inactive Publication Date: 2019-03-15
JILIN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this product is that it occupies a large area, takes a long time to cultivate aerobic granular sludge, and the separate sewage treatment does not have the denitrification effect. It needs to cooperate with the sedimentation tank for mud-water separation, etc., resulting in high equipment investment and operating costs.

Method used

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  • A kind of aerobic granular sludge sewage treatment method with denitrification effect and special equipment
  • A kind of aerobic granular sludge sewage treatment method with denitrification effect and special equipment
  • A kind of aerobic granular sludge sewage treatment method with denitrification effect and special equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Example 1. Treatment of cornstarch factory wastewater (taken from the effluent of the regulating tank)

[0049] Reaction target solution volume: 2.8L

[0050] Reaction target solution: wastewater from a corn starch factory (taken from the effluent of the regulating tank), the water quality is:

[0051] Chemical oxygen demand (COD): 10000-12000mg / L

[0052] Nitrate nitrogen: 25-40 mg / L

[0053] Nitrite nitrogen: 0.04-0.06 mg / L

[0054] pH: 4.5-5.5

[0055] The reaction conditions are:

[0056] Aspect ratio: 1:15

[0057] Reactor height: 1.2m

[0058] The rising gas velocity in the inner tower 9 of the central aerobic nitrification zone 2 is maintained at 10m / h

[0059] Sewage hydraulic retention time 6 hours

[0060] The treatment effect is shown in Table 1, and the index parameters such as sewage and sludge in the reactor are shown in Table 2.

[0061] Table 1 Example 1 Treatment effect of sewage from a corn starch factory (taking the effluent from the regulati...

Embodiment 2

[0066] Example. 2 Treatment of urban sewage (taken from the fine screen effluent of an urban sewage plant)

[0067] The reaction target solution volume is: 2.8L

[0068] Reaction target solution: an urban sewage (taken from the fine screen effluent of an urban sewage plant), the water quality is:

[0069] Chemical oxygen demand (COD): 250-350mg / L

[0070] Total nitrogen: 25-40 mg / L

[0071] pH: 6.5-8.5

[0072] The reaction conditions are:

[0073] Aspect ratio: 1:15

[0074] Reactor height: 1.2m

[0075] The rising gas velocity in the inner tower 9 of the central aerobic nitrification zone 2 is maintained at 5m / h

[0076] Sewage hydraulic retention time 3 hours

[0077] The treatment effect is shown in Table 3, and the index parameters such as sewage and sludge in the reactor are shown in Table 4.

[0078] Table 3 Example 2 Treatment effect of fine screen effluent of urban sewage plant

[0079]

[0080] Table 2 Example 1 Treatment of sewage and sludge in the react...

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Abstract

The invention relates to an aerobic granular sludge sewage processing method having nitrogen removal effect and special-purpose equipment thereof. The method comprises the steps of culture and domestication of activated sludge, treatment of target sewage, and treatment of the sludge. The special-purpose equipment comprises a tower body, wherein the tower body is divided into three-phase separation zones of a tower bottom reaction zone, a central aerobic nitrification zone, and a top. The method has the beneficial effects that the sewage processing effect is good, the land occupation area of the tower is small, the granular sludge forming effect is good, nitrogen removal effect is good, external power is not required for circulation of a nitrogen solution and circulation of the sludge, and the cost is saved.

Description

technical field [0001] The invention belongs to equipment for treating organic polluted sewage by aerobic microorganism method, in particular to an aerobic granular sludge sewage treatment method with denitrification effect and its special equipment. Background technique [0002] With economic development and social progress, the water quality of various organic industrial wastewater has undergone fundamental changes and has become more difficult to treat, so its effective treatment and utilization has become a common concern. In recent years, the state has become more and more standardized on environmental management, and the sewage discharge standards have been continuously improved. At the same time, the requirements for energy consumption and material consumption have also gradually increased. This has made enterprises pay more attention to their own water treatment, and urgently needs corresponding sewage treatment technologies and equipment. Energy saving and emission ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/30
Inventor 杨春维胡克李金英汤茜孙玉伟
Owner JILIN NORMAL UNIV
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