System capable of utilizing acid to neutralize slags and dehydrated aluminum sludge to treat nitrogenous wastewater and method thereof

A technology for aluminum sludge and residue, which is applied in the field of comprehensive utilization of acid neutralization residue and dehydrated aluminum sludge as filter material, achieves large market prospects and promotion and application value, increases contact area, and has remarkable effects

Active Publication Date: 2014-08-13
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 problem that various existing nitrogen-containing wastewater treatment technologies cannot have the technical advantages of low cost and simple process, the present invention provides a system and method for treating nitrogen-containing wastewater by using acid neutralization residue and dehydrated aluminum sludge, It gives full play to the synergistic mechanism of acid neutralization residue and dehydrated aluminum sludge, and realizes the efficient removal of ammonia nitrogen and total nitrogen

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  • System capable of utilizing acid to neutralize slags and dehydrated aluminum sludge to treat nitrogenous wastewater and method thereof
  • System capable of utilizing acid to neutralize slags and dehydrated aluminum sludge to treat nitrogenous wastewater and method thereof

Examples

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Embodiment 1

[0031] Example 1: Denitrification treatment of domestic sewage in a certain rural area

[0032] Such as figure 1 , The storage tank 1 is 4 meters long, 2.5 meters wide, with a total depth of 1.5 meters and an effective depth of 1.2 meters, made of PVC material. The acid neutralization residue device 5 and the dehydrated aluminum sludge device 9 are cylindrical and have the same size, the acid neutralization residue device 5 is located above the dewatered aluminum sludge device 9, and the bottom of the acid neutralization residue device 5 is larger than the dehydrated aluminum sludge device. The top of 9 is 4cm high. The acid neutralization residue device 5 and the dehydrated aluminum sludge device 9 have a total height of 1.1m, a diameter of 40cm, a filter material layer height of 1.05m, and an effective volume of 106L; the acid neutralization residue device 5, from the top And there are 85cm high acid neutralization residue 3 and 20cm high cobblestone 4 below; In the dewate...

Embodiment 2

[0037] Example 2: Denitrification treatment of wastewater from a farm

[0038] Such as figure 1 , Reservoir 1: length 5 meters, width 3 meters, total depth 1.8 meters, effective depth 1.5 meters, brick-concrete structure. The treatment system is also cubic in brick-concrete structure. The bottom of the acid neutralization residue device 5 is 5cm higher than the top of the dehydrated aluminum sludge device 9, and the two devices have the same size: the total height is 1.1m, the length is 80cm, and the width is 60cm. The layer height is 1.0m, and the effective volume is 384L; the acid neutralization residue device 5 is 80cm high acid neutralization residue 3 and 20cm high pebble 4 from top to bottom, and the dehydration aluminum sludge device 9 is 80cm high from top to bottom 8 of dehydrated aluminum sludge and 4 of 20cm high pebbles. Among them, the acid neutralization residue 3 is selected from the waste generated during the conversion of ilmenite into rutile, and the dehydr...

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Abstract

The invention belongs to the field of nitrogenous wastewater treatment, and discloses a system capable of utilizing acid to neutralize slag and dehydrated aluminum sludge to treat nitrogenous wastewater and a method thereof. The system comprises an acid neutralizing slag device and a dehydrated aluminum sludge device, the acid neutralizing acid device is arranged above the dehydrated aluminum sludge device, the bottom of the acid neutralizing acid device is higher than the top of the dehydrated aluminum sludge device, the bottom of the acid neutralizing acid device communicates with the bottom of the dehydrated aluminum sludge device through a channel, and a valve is arranged on a position, where is close to the dehydrated aluminum sludge device, on the channel. The system also comprises a water storage tank, a first water pump is arranged on a channel, which connects the water storage tank and the upper end of the acid neutralizing slag device, and a second water pump is arranged on a channel, which connected the water storage tank and the upper end of the dehydrated aluminum sludge device. The system utilizes acid to neutralize slag and takes the dehydrated aluminum sludge as the reaction medium, through constructing of a two-grade filter tank to implement alternate operation of nitrogenous waste water, and thus high efficient elimination of ammonia nitrogen and total nitrogen is achieved.

Description

technical field [0001] The invention belongs to the field of nitrogen-containing wastewater treatment, more specifically, relates to a comprehensive utilization of acid neutralization residue and dehydrated aluminum sludge as filter material [0002] Systems and methods for treating nitrogenous wastewater. Background technique [0003] In recent years, with the rapid development of my country's economy, people's living standards have gradually improved. But at the same time, human production and life have also brought certain negative impacts on the environment on which they depend, and nitrogen pollution is one of the key points. Nitrogen is one of the components with the highest attention and the most complex transformation among the many pollutants in sewage. As an important nitrogen sink, the water body is saturated and overloaded due to the continuous input of nitrogen (mainly ammonia nitrogen and total nitrogen). Among them, livestock and poultry breeding and rural d...

Claims

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Application Information

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