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Comprehensive treatment method for high-concentration ammonia nitrogen wastewater

A technology for comprehensive treatment of ammonia nitrogen wastewater, applied in water/sewage treatment, biological water/sewage treatment, degassed water/sewage treatment, etc., can solve problems such as secondary pollution, achieve high ammonia nitrogen removal rate and stable effluent quality. , The effect of strong process stability

Inactive Publication Date: 2017-07-14
浙江一清环保工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although there are many ways to remove ammonia nitrogen, and sometimes a combination of multiple technologies is used, there is no solution that can efficiently, economically and stably treat ammonia nitrogen sewage, and some processes bring secondary pollution while ammonia nitrogen is removed

Method used

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  • Comprehensive treatment method for high-concentration ammonia nitrogen wastewater

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Embodiment 1

[0044] refer to figure 1 , a comprehensive treatment method for high-concentration ammonia-nitrogen wastewater, comprising the following steps: the wastewater first passes through a grid and enters a regulating tank, a mechanical stirring device is arranged in the regulating tank, and 10% sodium hydroxide is added in the regulating tank to adjust the pH of the wastewater to 11, and make the waste water mix evenly. Then the wastewater enters the aeration stripping tower, the top of the tower is equipped with a liquid distributor, the inner filling material of the tower is PP Pall ring, and the bottom of the tower is equipped with a fan and an aerator; The upper part is sprinkled on the PP Pall ring packing to form water droplets, which fall down sequentially along the gap of the packing, and contact with the air blown upward or horizontally by the fan from the bottom of the tower. The aeration device at the bottom of the tower makes the accumulated liquid increase. The contact...

Embodiment 2

[0047] A comprehensive treatment method for high-concentration ammonia-nitrogen wastewater, comprising the following steps: the wastewater first passes through a grid and enters a regulating tank, a mechanical stirring device is installed in the regulating tank, 10% calcium hydroxide is added to the regulating tank to adjust the pH of the wastewater to 12, and Mix the wastewater evenly. Then the waste water enters the aeration stripping tower, the top of the tower is equipped with a liquid distributor, the inside of the tower is filled with multi-faceted hollow balls, and the bottom of the tower is equipped with a fan and an aerator. The waste water enters from the top of the tower, and sprays from the upper part of the tower to the multi-faceted hollow ball packing to form water droplets, which fall down sequentially along the gaps of the packing, and contact with the air blown upward or horizontally by the fan from the bottom of the tower. The aeration device makes the accum...

Embodiment 3

[0050] A comprehensive treatment method for high-concentration ammonia-nitrogen wastewater, comprising the following steps: first, the wastewater enters a regulating pool through a grid, a mechanical stirring device is installed in the regulating pond, and 20% calcium hydroxide is added to the regulating pond to adjust the pH of the wastewater to 11.5 , and make the waste water mix evenly. Then the wastewater enters the aeration stripping tower, the top of the tower is equipped with a liquid distributor, the inner filling material of the tower is corrugated plate, and the bottom of the tower is equipped with a fan and an aerator. The waste water enters from the top of the tower, sprays from the upper part of the tower to the corrugated plate packing to form water droplets, and falls sequentially along the gaps of the packing, and contacts with the wind blown upward or horizontally by the fan from the bottom of the tower. The gas device makes the accumulated liquid increase the...

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Abstract

The invention relates to a comprehensive treatment method for high-concentration ammonia nitrogen wastewater. The comprehensive treatment method comprises the following steps: firstly, introducing wastewater into an adjusting tank through a grid, adjusting alkali, introducing the wastewater into an ozone reaction tank through an aeration air stripping tower and a neutralizing tank in sequence, adding a bromide in an ozone reaction to carry out a reaction similar to chlorination of a break point, and introducing effluent into a sedimentation tank; introducing the wastewater into a biochemical reaction system after being treated with a pretreatment system, wherein the biochemical reaction system comprises a biological activated carbon fluidizing bed and a membrane reactor; lastly, discharging or reusing the wastewater up to the standard through filtering treatment. By adopting the comprehensive treatment method, a blow-off method, an advanced oxidation method, a break point chlorination method, a biochemical treatment method and a physical adsorption method are combined, so that ammonia and nitrogen are removed efficiently and completely, and meanwhile, COD (Chemical Oxygen Demand) and SS (Suspended Substances) in the wastewater can be removed effectively. The comprehensive treatment method is suitable for comprehensive treatment of various high-concentration ammonia nitrogen wastewater, and has the advantages of high ammonia nitrogen removing rate, high process stability, stable and up-to-standard effluent quality, and the like.

Description

technical field [0001] The invention belongs to the field of wastewater treatment, and in particular relates to a comprehensive treatment method for high-concentration ammonia nitrogen wastewater. Background technique [0002] High-concentration ammonia nitrogen wastewater has a wide range of sources and a large amount of discharge, such as chemical fertilizers, coking, petrochemicals, pharmaceuticals, food, landfills, etc., all produce a large amount of high-concentration ammonia nitrogen wastewater. The discharge of a large amount of ammonia nitrogen wastewater into the water body will not only cause eutrophication of the water body, cause the water body to be black and smelly, but also increase the difficulty and cost of water supply treatment, and even cause poisonous effects on people and organisms. The impact of ammonia nitrogen wastewater on the environment has attracted attention in the field of environmental protection and globally. In the past 20 years, a lot of re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F1/001C02F1/20C02F1/66C02F1/766C02F1/78C02F3/085C02F3/1268C02F3/302C02F9/00C02F2001/007
Inventor 吴昊张天瑞陈建军陈杰周玲
Owner 浙江一清环保工程有限公司
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