Rainfall runoff purification device and method

A purification device and runoff technology, applied in chemical instruments and methods, biological treatment devices, runoff/rainwater treatment, etc., can solve the problems of poor removal effect of indicator bacteria and trace organic toxic substances, short device life, complicated operation, etc. The effect of increasing radial processing capacity, low cost and simple operation process

Active Publication Date: 2018-12-28
NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems that the existing technology can only remove nitrogen, carbon, phosphorus and heavy metals in rainwater runoff, but has poor removal effect on indicator bacteria and trace organic toxic substances, and the device used has short life, complicated operation and easy clogging, the present invention provides a A rainwater runoff purification device and purification method can not only effectively remove nitrogen, carbon, phosphorus and heavy metals in water, but also effectively remove indicator bacteria and trace organic toxic substances, and have a long service life and good water purification effect

Method used

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  • Rainfall runoff purification device and method
  • Rainfall runoff purification device and method
  • Rainfall runoff purification device and method

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Experimental program
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Effect test

Embodiment 1

[0040] This embodiment 1 adopts such as figure 1 The shown rainwater runoff purification device purifies synthetic rainwater, which includes a sewage tank 6, an inlet pipe 12, a purification filter and a drainage system; the purification filter is divided into water intake area 1, plant layer 2, and compost from top to bottom. Retention area 3, biochar filling area 4 and drainage area 5; the drainage system is provided with drainage pipes; the sewage pool 6 is connected to the water inlet area 1 through the water inlet pipe 12; the drainage system is connected to the drainage area 5 through the drainage pipe.

[0041] The water inlet pipe 12 is provided with a peristaltic pump 7 and a water inlet switch 8 to control the sewage runoff and enter the purification device.

[0042] The drainage pipe of the drainage system includes a stainless steel pipe 10 and a PVC pipe 13 provided with a water outlet 9 and two overflow ports 11. The overflow port 11 is located above the water out...

Embodiment 2

[0063] In this embodiment, the device is further improved on the basis of Embodiment 1. The stainless steel pipe 10 is provided with a stainless steel filter screen to prevent the interference of the medium; the PVC pipe 13 is provided with 3 overflow ports 11 to increase the water output; the compost retention area 3, biochar filling area 4 and drainage Zone 5 accounts for 20%, 40%, and 20% of the total volume of the filter tank. Plant layer 2 is planted with shallow-rooted plants such as calamus and moss, and deep-rooted plants with reed and brome. Compost retention zone 3 contains organic compost, sieved to reduce particle size Smaller than 1.68mm, mixed with river sand with a particle size of 0.75-1.25mm at a volume ratio of 0.5:4, with a porosity of 45%; the volume ratio of coconut shell biochar and basic filler in biochar filler area 4 is 0.5: 4, the porosity is 40%, the content of coconut shell biochar is 0.75%wt, the particle size is 75-175μm, and the basic filler incl...

Embodiment 3

[0077] In this embodiment, the device is further improved on the basis of Embodiment 1. The PVC pipe 13 is provided with 2 overflow outlets 11; in the purification filter, the plant layer 2, the compost retention area 3, the biochar filling area 4 and the drainage area 5 account for 35%, 15%, 45%, and 35% of the total volume of the filter tank. and 15%, the plant layer 2 is planted with shallow-rooted plants calamus, wheat, moss, and deep-rooted plant grass, reed, brome, compost retention area 3 contains organic compost, sieved to make the particle size less than 1.68mm, and with the particle size River sand of 0.5-1.5 mm is mixed at a volume ratio of 0.75:4, with a porosity of 35%; coconut shell biochar and basic filler are mixed at a volume ratio of 0.75:4 in the biochar filler area 4, and the porosity is 35%. The content of coconut shell biochar is 0.25%wt, the particle size is 50-250μm, and the basic filler includes natural river sand with a particle size of 200-300μm, zeo...

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Abstract

The invention discloses a rainfall runoff purification device and method and belongs to the field of sewage treatment. Water collection, water inlet, purification and drain systems are integrated; a purification filter in the device is provided with four filter areas including a plant area, a compost interception area, a biochar filler area and a drain area from top to bottom, four different treatment processes and methods are compounded and connected in one system in series, and organic compost particles have higher aromaticity, can be utilized with organic substrates as carbon sources and can produce unique microbial florae to degrade pollutants, so that better and more stable rainfall runoff purification tretament effects are realized. The used filler is low in cost, and the investmentis greatly reduced while the sewage tretament effect is guaranteed. The device has the advantages of being small in size, flexible and wide in application, simple in structure, reasonable in design and easy to manufacture.

Description

technical field [0001] The invention belongs to the field of sewage treatment equipment and methods, and more specifically relates to a rainwater runoff purification device and purification method. Background technique [0002] Today's Chinese society is developing rapidly and the urbanization process is accelerating, resulting in the rapid increase of urban impervious areas and non-point source pollution is becoming more and more serious. Prior to the 21st century, the focus of research was on point source pollution. With the advancement of science and technology, the improvement of control measures and the increase in investment in control, point source pollution has been effectively controlled, and its contribution to water pollution has been decreasing year by year. At the same time, the proportion of non-point source pollution in the pollution load has been rising, surpassing point source pollution, and accounting for 60% of water pollution. Compared with point source ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/16C02F101/20C02F101/30
CPCC02F9/00C02F1/001C02F1/281C02F1/283C02F3/32C02F3/34C02F2103/001C02F2101/30C02F2101/16C02F2101/20C02F2101/105C02F2203/006C02F2303/04C02F2305/06
Inventor 汪龙眠张毅敏张爱国徐问问于江华杨飞彭福全朱月明许雪婷
Owner NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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