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Improved integrated A/O sewage treatment equipment

A kind of sewage treatment equipment and equipment technology, applied in the field of water treatment, can solve the problems of lack of efficient, economical and practical complete set of sewage treatment technology, lagging construction and operation of sewage treatment facilities, limited development and research, etc., to facilitate management and operation , save infrastructure costs, and have a strong ability to resist changes in water volume

Active Publication Date: 2010-05-19
LONG JIANG ENVIRONMENT PROTECTION GROUP SHARE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, limited by the constraints of national financial resources, the distribution of funds for infrastructure between large cities and small and medium-sized towns is seriously unbalanced. For example, the country, provinces, and cities in the early stage focused their investment on supporting the construction of urban sewage treatment plants. In terms of support, there is little support for the construction of sewage treatment facilities in counties and towns below the county level. In addition, the economic level of small and medium-sized towns is relatively low and the awareness of environmental protection is weak. The construction and operation of sewage treatment facilities lag far behind the requirements of the development of the situation.
A large amount of residential sewage and fecal sewage are basically not effectively treated, and are directly discharged into the ground and rivers and lakes, causing serious pollution to local water sources and the surrounding environment
Although people have studied some small town sewage treatment technologies, due to the limited development and research, coupled with the different environmental conditions of many small towns, it is not related to the social and economic development status of small towns, management level, sewage water quality characteristics, terrain and other specific conditions. The technology development and application of suitable, high-efficiency, low-consumption, and economically applicable treatment processes is in a relatively lagging state
Therefore, the gap between my country and foreign countries in small town sewage treatment technology is mainly due to the lack of efficient, economical and practical complete sets of sewage treatment technology suitable for the characteristics of small towns

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Example 1: Combining figure 1 , figure 2 , the integrated AO improved sewage treatment equipment of the present invention, it is made up of hydrolysis pond (2), A pond (3), reaction pond (22) and sludge return pump (14), and hydrolysis pond (2) connects A pond (3), pool A (3) is connected to the reaction tank (22) and the sludge return pump (14).

[0017] The present invention also has the following technical characteristics:

[0018] The hydrolysis tank (2) includes a grit chamber outlet pipe (1), a hydrolysis tank agitator (11) and a lower water passage hole (20), and the grit chamber outlet pipe (1) is located on the side of the hydrolysis tank (2) In the upper part, the hydrolysis tank agitator (11) is arranged inside the hydrolysis tank (2), and the lower part of the water passing hole (20) is located at the lower side inside the hydrolysis tank (2).

[0019] The A pool (3) includes an upper water hole (21), an A tank agitator (12) and a sludge return pipe into...

Embodiment 2

[0024] Example 2: Combining figure 1 , figure 2 , the integrated AO improved sewage treatment equipment of the present invention operates like this: the sewage enters the grit chamber outlet pipe (1) after the grit chamber, enters the overall reaction tank by the grit chamber outlet pipe (1), and the overall reaction pool is hydrolyzed Pool (2), A pool (3), O pool inlet side (4), O pool other side (5) and sludge filter pool (6). Sewage enters the hydrolysis tank (2) through the outlet pipe (1) of the grit chamber, is mixed by the hydrolysis tank agitator (11), and then enters the A pool (3) through the lower water hole (20). In pool A (3), because the sludge return pipe into the pool pipe (15) flows into the sludge, the mixed solution becomes a sludge mixed solution with a concentration of 3500-4500 mg / L, and part of the sludge solution will pass through the lower water-passing cavity (20 ) to the hydrolysis tank (2), thereby maintaining a higher sludge concentration in the...

Embodiment 3

[0025] Example 3: Binding figure 1 , figure 2 , the integrated A / O improved sewage treatment equipment of the present invention, the design idea is as follows:

[0026] 1) Omit the initial sedimentation tank and change it to a hydrolysis tank

[0027] The A / O process is the abbreviation of Anoxic / Oxic (Anoxic / Oxic), and it is a simple and practical urban sewage treatment technology with many researches and practical engineering applications. The traditional AO sewage treatment process is usually: thick and fine grid → grit chamber → primary sedimentation tank → AO biological reaction tank → secondary sedimentation tank. The O tank in the biological reaction tank is oxygenated, the A tank is mixed, the mixed solution of the effluent from the O tank is returned to the A tank, and the muddy water mixture is returned to the O tank after the secondary sedimentation. Pool A mainly completes denitrification and denitrification, pool O mainly completes COD removal and nitrificatio...

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Abstract

The invention relates to improved integrated A / O sewage treatment equipment which is suitable for treating urban area and scattered point source domestic sewage which has middle and small-size amount and large concentration change range, can separate the sludge from the urban area and scattered point source domestic sewage efficiently, can ensure that a biochemical reaction tank keeps high sludge concentration and can reduce the volume of the biochemical reaction tank. The improved integrated A / O sewage treatment equipment consists of a hydrolytic tank, an A tank, a biochemical reaction tank and a sludge return pump. The hydrolytic tank is connected with the A tank; the A tank is connected with the biochemical reaction tank and the sludge return pump; the A tank comprises an upper water-pass hole, an A tank stirrer and a sludge return and tank enter pipe; the biochemical reaction tank comprises a sludge filter tank and an O tank; and the sludge return pump is arranged outside the biochemical reaction tank. The improved integrated A / O sewage treatment equipment has high sludge concentration and volume loading, can ensure that the reactor maintains the sludge concentration of 4000-4500mg / L, can reduce the design volume of the reactor by 20-30% and can save the capital construction cost. The invention can realize the modular production and is convenient to manage and run due to the integrated design.

Description

(1) Technical field [0001] The invention relates to water treatment technology, in particular to an integrated A / O improved sewage treatment equipment. (2) Background technology [0002] With the expansion of the scale and number of small and medium-sized cities and towns, the discharge of urban sewage is also increasing. However, limited by the constraints of national financial resources, the distribution of funds for infrastructure between large cities and small and medium-sized towns is seriously unbalanced. For example, the country, provinces, and cities in the early stage focused their investment on supporting the construction of urban sewage treatment plants. In terms of support, there is little support for the construction of sewage treatment facilities in counties and towns below the county level. In addition, the economic level of small and medium-sized towns is relatively low and the awareness of environmental protection is weak. The construction and operation of s...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F3/30
Inventor 陈志强温沁雪朴庸健
Owner LONG JIANG ENVIRONMENT PROTECTION GROUP SHARE
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