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Device and method for denitrification and dephosphorization by using industrial solid wastes

A technology for solid waste, nitrogen and phosphorus removal, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. Promote the application value, the effect is remarkable, the effect of low cost

Active Publication Date: 2015-01-07
NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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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 using industrial solid waste Phosphorus removal device and method

Method used

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  • Device and method for denitrification and dephosphorization by using industrial solid wastes
  • Device and method for denitrification and dephosphorization by using industrial solid wastes
  • Device and method for denitrification and dephosphorization by using industrial solid wastes

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Embodiment 1

[0032] Example 1: Treatment of domestic sewage in a certain rural area

[0033] Such as figure 1 , the primary device 1 is cylindrical with a height of 1.6m, a diameter of 1.2m, a filter material layer height of 1.5m, and an effective volume of 1.7m3. The device reaction filter material 3 selects dehydrated aluminum sludge and light-burned magnesia, both of which come from a waterworks and a magnesia production plant respectively. The plant layer 5 is planted on the upper part of the first-level device 1, and the species is Diaolum sativa; the second-level device 2 It is cylindrical and has the same size and structure as the first-level device 1. The reaction filter material 4 of the second-level device uses acid neutralization residue and light-burned magnesia, which are respectively from an ilmenite factory and a magnesia production plant; the first-level device The bottom of 1 and the bottom of secondary device 2 are connected by laying pipelines, and the pipeline is provi...

Embodiment 2

[0039] Embodiment 2: a certain farm waste water is processed

[0040] Such as figure 1 , the primary device 1 is a cube with a height of 1.5m, a length of 1.0m, a width of 0.7m, a filter material layer height of 1.4m, and an effective volume of 1.0m 3 , the heights of 3 layers of reaction filter material and 6 layers of pebbles in the first-level device are 1.3m and 10cm respectively, and the reaction filter material 3 of the first-level device is made of dehydrated aluminum sludge and red sand, which come from a waterworks and an alumina refinery respectively , and add the same quality, the plant layer 5 is planted on the top of the first-level device 1, and the variety is reed; the second-level device 2 is a cube and the size structure is the same as that of the first-level device 1, and the reaction filter material 4 of the second-level device is selected for use. The mud pellets come from an ilmenite plant and an alumina refinery respectively, and the added quality is the...

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Abstract

The invention belongs to the field of denitrification and dephosphorization of sewage and discloses a device and method for denitrification and dephosphorization by using industrial solid wastes. The device comprises a first-stage device and a second-stage device, wherein the first-stage device is horizontally arranged at the front part of the second-stage device, the bottom of the first-stage device is communicated with the bottom of the second-stage device through a pipeline, and an electromagnetic valve II and a water pump are arranged on the pipeline; a plant layer, a first-stage device reaction filtering material and pebbles are sequentially arranged in the first-stage device from top to bottom, and the first-stage device reaction filtering material is a mixture of dehydrated aluminum sludge and light-burned magnesia or a mixture of dehydrated aluminum sludge and red sand; a second-stage device reaction filtering material and pebbles are sequentially arranged in the second-stage device from top to bottom, and the second-stage device reaction filtering material is a mixture of acid neutralized residues and light-burned magnesia or a mixture of acid neutralized residues and red-mud granules. According to the device and the method, a synergy mechanism of the filtering materials is fully exerted, and a reasonable operating process is matched, thereby realizing the aims that the floor area is small, the operating cost is low, and the nitrogen and phosphorus are efficiently removed from the sewage.

Description

technical field [0001] The invention belongs to the field of denitrification and dephosphorization of sewage, and more specifically relates to a device and method for denitrification and dephosphorization 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 human production and life...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
Inventor 汪龙眠张毅敏晁建颖杨飞高月香
Owner NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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