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Biological filter tank and sewage treatment method

A biological filter and sewage technology, applied in biological water/sewage treatment, sustainable biological treatment, water/sludge/sewage treatment, etc. The effect is limited and other problems, to achieve the effect of saving operating costs, convenient assembly and cost saving

Pending Publication Date: 2019-04-05
XIAMEN LUHAI TECH ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The device consumes a lot of power, not only need to use the motor to drive the cutting blade to cut the solid matter in the sewage, but also need to overcome the liquid pressure for aeration
At the same time, the treatment and purification effect is limited, and the ammonia nitrogen pollutants in the water cannot be completely removed.

Method used

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  • Biological filter tank and sewage treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] refer to figure 1 , the biological filter includes a lifting pump 1, the water outlet of the lifting pump 1 is connected to the water distribution pipe 2, the water distribution pipe 2 is a stainless steel perforated pipe, and the opening of the hole is downward, the diameter of the hole is 5mm, and the water distribution layer 5 is evenly distributed through the water distribution pipe 2 . The water distribution layer 5 is filled with gravel with a particle size of 10mm and a thickness of 0.3m. Below the water distribution layer 5 is a filter material layer 6, which is filled with filter fillers with a particle size of 2mm, such as fine sand, zeolite or ceramsite, with a thickness of 0.7m, and the filter fillers contain aerobic bacteria.

[0034] Below the filter material layer 6 is a support layer 10 filled with crushed stones with a particle size of 5mm and a thickness of 0.2m. . The blast pipe 9 is located on the upper part of the support layer 10. The blast pipe 9...

Embodiment 2

[0038] A biological filter, comprising a lifting pump 1, the water outlet of the lifting pump 1 is connected to a water distribution pipe 2, the water distribution pipe 2 is a perforated pipe, and the opening of the hole is downward, the diameter of the hole is 10mm, and the water distribution layer 5 is uniformly fed through the water distribution pipe 2 water distribution. The water distribution layer 5 is filled with gravel with a particle size of 40mm and a thickness of 0.4m. Below the water distribution layer 5 is the filter material layer 6, which is filled with filter fillers with a particle size of 5mm, such as fine sand, zeolite or ceramsite, with a thickness of 0.8m, and the filter fillers contain aerobic bacteria.

[0039] Below the filter material layer 6 is a support layer 10 filled with crushed stones with a particle size of 10mm and a thickness of 0.3m. The air blast pipe 9 is located on the upper part of the supporting layer 10, the air blast pipe 9 is a perfo...

Embodiment 3

[0043] A biological filter, comprising a lifting pump 1, the water outlet of the lifting pump 1 is connected to a water distribution pipe 2, the water distribution pipe 2 is a perforated pipe, and the opening of the hole is downward, the diameter of the hole is 7mm, and the water distribution layer 5 is uniformly fed through the water distribution pipe 2 water distribution. The water distribution layer 5 is filled with gravel with a particle size of 20mm and a thickness of 0.2m. Below the water distribution layer 5 is the filter material layer 6, which is filled with filter fillers with a particle size of 3mm, such as fine sand, zeolite or ceramsite, with a thickness of 0.6m, and the filter fillers contain aerobic bacteria.

[0044] Below the filter material layer 6 is a support layer 10 filled with crushed stones with a particle size of 7 mm and a thickness of 0.1 m. The air blast pipe 9 is located on the upper part of the support layer 10, the air blast pipe 9 is a perforat...

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Abstract

The invention relates to a biological filter tank and a sewage treatment method. The biological filter tank comprises a water distribution layer, a material filtering layer, a supporting layer and a water collection layer which are sequentially distributed from top to bottom, wherein sewage to be treated enters into the water distribution layer to be evenly distributed with water; organic nitrogenand ammonia nitrogen entering into the material filtering layer are converted into nitrate nitrogen through ammoniation, nitration and the like; the supporting layer blows in air during the drying period to ensure the activity of aerobic bacteria in the material filtering layer; and a raw water carbon source is utilized to further remove the nitrate nitrogen in the water collection layer throughdenitrification, so that the obtained purified water meets the first-level A standard. The biological filter tank has the advantages of low investment and low operation cost, adopts the raw water carbon source for post-denitrification, and has a better sewage treatment effect by controlling the flow rate of sewage in a water distribution pipe and an overflow pipe.

Description

technical field [0001] The invention relates to sewage treatment technology, in particular to a biological filter and a sewage treatment method. Background technique [0002] Biological treatment technology uses the action of aerobic bacteria and anaerobic bacteria to remove harmful components in sewage to achieve the purpose of water purification. In the prior art, the MBR biomembrane method is usually used for high-efficiency separation. However, the investment in membrane equipment is high, and it is suitable for large-scale sewage treatment needs. For small sewage treatment plants, or low-flow sewage generated intermittently, membrane equipment is not only difficult to meet the operating requirements, And it's not cost effective either. [0003] Chinese utility model patent CN205821112U discloses a domestic sewage treatment device, including a sewage treatment layer, a box body and a sewage pretreatment device; the sewage treatment layer is installed inside the box body...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/02C02F3/30C02F101/16C02F101/38
CPCC02F3/02C02F3/302C02F2101/16C02F2101/38Y02W10/10
Inventor 张亚乖马红艳郭冰松
Owner XIAMEN LUHAI TECH ENG