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A three-stage biofilter system and its sewage treatment method using industrial waste to remove nitrogen and phosphorus

A sewage treatment method, industrial waste technology, applied in the direction of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve problems such as low operating costs, and achieve large market prospects and promotion Application value, significant effect, low cost effect

Active Publication Date: 2016-06-01
NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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Problems solved by technology

[0007] Aiming at the problems that various existing small-scale treatment systems for rural domestic sewage and livestock and poultry breeding wastewater cannot have both low construction and operation costs and efficient removal of nitrogen and phosphorus in sewage at the same time, the present invention provides a method for denitrification and removal of nitrogen and phosphorus from industrial waste. Three-stage biofilter system for phosphorus and its sewage treatment method

Method used

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  • A three-stage biofilter system and its sewage treatment method using industrial waste to remove nitrogen and phosphorus
  • A three-stage biofilter system and its sewage treatment method using industrial waste to remove nitrogen and phosphorus
  • A three-stage biofilter system and its sewage treatment method using industrial waste to remove nitrogen and phosphorus

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Embodiment 1

[0036] Example 1: Treatment of domestic sewage in a certain rural area

[0037] Such as figure 1 , The storage tank 1 is 2 meters long, 2.5 meters wide, 1 meter in total depth, and 0.8 meters in effective depth, made of PVC material. The primary device 4, the secondary device 8 and the tertiary device 9 are cylindrical and have the same size. The primary device 4 is located above the secondary device 8, and the bottom of the primary device 4 is 3 cm higher than the top of the secondary device 8. The bottom of the secondary device 8 is 4 cm higher than the top of the tertiary device 9 .

[0038] The total height of the first-level device 4, the second-level device 8 and the third-level device 9 is 0.5m, the diameter is 20cm, the height of the filter material layer is 30cm, and the effective volume is 15.7L. In the first-level device 4, there are 10 cm of coal cinders 10, 30 cm of mixture of acid neutralization residue and red mud and 10 cm of pebbles 12 from top to bottom; in...

Embodiment 2

[0049] Embodiment 2: a certain farm waste water is processed

[0050] Such as figure 1 , Reservoir 1: length 4 meters, width 3 meters, total depth 1.8 meters, effective depth 1.5 meters, brick-concrete structure. The processing system is also a cube with a brick-concrete structure. The primary device 4 is located above the secondary device 8, and the bottom of the primary device 4 is 5 cm higher than the top of the secondary device 8. The bottom of the secondary device 8 is 8 cm higher than the top of the tertiary device 9 .

[0051] The total height of the primary device 4, the secondary device 8 and the tertiary device 9 is 0.8m, the diameter is 20cm, the height of the filter layer is 60cm, and the effective volume is 25.1L. combine figure 2 , in the primary device 4, there are 10cm coal cinders 10, 60cm mixture of acid neutralization residue and red mud and 10cm pebbles 12 from top to bottom; in the secondary device 8, there are 10cm coal cinders 10, 60cm mineralization...

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Abstract

The invention discloses a three-stage biofilter system for removing nitrogen and phosphorus by using industrial waste and a sewage treatment method thereof, and belongs to the field of nitrogen and phosphorus removal of sewage. The system comprises a reservoir, a first-stage device, a second-stage device and a third-stage device, wherein the reservoir is arranged above the first-stage device; the first-stage device is arranged above the second-stage device; the bottom of the first-stage device is communicated with the bottom of the second-stage device through a pipeline; a bottom electromagnetic valve is arranged on the pipeline; a bottom water outlet electromagnetic valve is arranged on the pipeline by which the bottom water outlet of the first-stage device is communicated with the top of the second-stage device; the second-stage device is arranged above the third-stage device; the bottom of the second-stage device is communicated with the bottom of the third-stage device through a pipeline; a bottom electromagnetic valve is arranged on the pipeline; a bottom water outlet electromagnetic valve is arranged on the pipeline by which the bottom water outlet of the second-stage device is communicated with the top of the third-stage device. The system makes full use of the synergistic effect mechanism of filter materials, occupies a small area, is low in operating cost, and can efficiently remove nitrogen and phosphorus out of sewage.

Description

technical field [0001] The invention belongs to the field of denitrification and phosphorus removal of sewage, and more specifically relates to a system and a sewage treatment method for denitrification and phosphorus removal of rural domestic sewage and livestock and poultry breeding wastewater by using industrial solid waste. Background technique [0002] With the rapid development of my country's economy, the pollution problems of rural life and livestock and poultry breeding wastewater are becoming more and more serious. The biggest characteristic of the two types of sewage is the high concentration of nitrogen and phosphorus. Nitrogen and phosphorus are also the most concerned components of sewage pollutants. As an important gathering place, the water body will cause a series of serious environmental problems such as eutrophication when it becomes saturated with the continuous input of nitrogen and phosphorus, and at the same time bring certain negative impacts on huma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
Inventor 汪龙眠车昱晓张毅敏杨飞晁建颖高月香王赵青
Owner NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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