Aerobic granular sludge sewage processing method having nitrogen removal effect and special-purpose equipment thereof

An aerobic granular sludge and sewage treatment method, which is applied in the direction of aerobic and anaerobic process treatment, can solve the problems of long aerobic granular sludge cultivation time, high equipment investment and operating costs, and no denitrification effect, etc. problem, to achieve good sewage treatment effect, excellent settling performance, and increase the effect of oxygen dissolution

Inactive Publication Date: 2016-08-03
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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  • Aerobic granular sludge sewage processing method having nitrogen removal effect and special-purpose equipment thereof
  • Aerobic granular sludge sewage processing method having nitrogen removal effect and special-purpose equipment thereof
  • Aerobic granular sludge sewage processing method having nitrogen removal effect and special-purpose equipment thereof

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: 25-40mg / L

[0053] Nitrite nitrogen: 0.04-0.06mg / 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 (water from the regulating tank)

[006...

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: 25-40mg / 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 Effects of Fine Screen Effluent from Urban Sewage Plant

[0079]

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

Embodiment 3

[0083] Example. 3 Treatment of corn starch factory wastewater (taken from the effluent of anaerobic reaction pool)

[0084] The reaction target solution volume is: 2.8L

[0085] Reaction target solution: wastewater from a corn starch factory (taken from the effluent of anaerobic reaction tank), the water quality is:

[0086] Chemical oxygen demand (COD): 752mg / L

[0087] Total nitrogen: 35mg / L

[0088] pH: 7.6

[0089] The reaction conditions are:

[0090] Aspect ratio: 1:15

[0091] Reactor height: 1.2m

[0092] The rising gas velocity in the inner tower 9 of the central aerobic nitrification zone 2 is maintained at 8m / h

[0093] Sewage hydraulic retention time 5 hours

[0094] Dissolved oxygen in the central aerobic nitrification zone can be maintained above 2.0mg / L

[0095] temperature at 18°C

[0096] Suspended particulate matter concentration (SS) 120mg / L

[0097] The effluent COD is 54mg / L, and the removal rate reaches 92.8%.

[0098] The total nitrogen in the e...

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Abstract

The invention relates to an aerobic granular sludge sewage treatment method with denitrification effect and special equipment. The method comprises the steps of cultivating and acclimating activated sludge, treating target sewage, and sludge disposal. The special equipment includes a tower body, which is divided into a reaction zone at the bottom of the tower, an aerobic nitrification zone in the middle, and a three-phase separation zone at the top. The beneficial effect of the invention is that the sewage treatment effect is good, the tower design occupies a small area, the sludge particle formation effect is good, and the denitrification effect is good, and the nitrification liquid circulation and the sludge circulation do not need external power, which saves costs.

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 Applications(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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