Method for increasing ammonium nitrogen in river water

An ammonia nitrogen removal rate, river water technology, applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve problems such as unsuitable use, low ammonia nitrogen rate in biological floating beds, large investment and operating costs, and achieve no equipment. Maintenance cost, high nitrification rate, fast effect

Active Publication Date: 2016-10-26
ANHUI MEIZIRAN ENVIRONMENTAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The aeration method requires large investment and operating costs, and the conversion rate of biological floating beds and floating islands to ammonia nitrogen is low, so it is not suitable for use in river ditches with flood drainage functions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Select natural clinoptilolite ore, crush and pass through a 0.1mm sieve to obtain natural zeolite powder; mix aluminum powder, lime and surfactant in a mass ratio of 1:80:10 to obtain a foaming agent; in a mass ratio of 100:20: 1.5 Mix natural zeolite powder, cement and foaming agent to obtain a mixture; pour the mixture into a shape for initial setting for 1 to 2 hours, and cut it into blocks (length: 600mm, The width is 100mm, 125mm, 150mm, 200mm, 250mm, 300mm, 120mm, 180mm, 240mm and other specifications, and the height is 200mm, 250mm, 300mm and other specifications), and then put into the autoclaved curing kettle under 12Mpa pressure and steam at 180℃ Curing for 15 hours to obtain zeolite aerated concrete blocks.

[0016] Construction of infiltration dams for river trenches using zeolite air-entrained concrete blocks. The height of the seepage dam is 30cm higher than the normal water level of the ditch, and the length of the seepage dam is equal to the width of th...

Embodiment 2

[0019] Select natural clinoptilolite ore, crush and pass through a 0.1mm sieve to obtain natural zeolite powder; mix aluminum powder, lime and surfactant in a mass ratio of 1:50:5 to obtain a foaming agent; in a mass ratio of 20:4: 1. Mix natural zeolite powder, cement and foaming agent to obtain a mixture; pour the mixture into shape and initially set for 1 to 2 hours, and cut it into blocks (600mm in length) with a wire cutter from three directions: vertical, horizontal and horizontal , the width is 100mm, 125mm, 150mm, 200mm, 250mm, 300mm, 120mm, 180mm, 240mm and other specifications, the height is 200mm, 250mm, 300mm and other specifications), and then put into the autoclaved curing kettle under 12Mpa pressure and 180℃ temperature Steam curing for 15 hours to obtain zeolite aerated concrete blocks.

[0020] Use zeolite aerated concrete blocks to build drainage ditches with a width of 50-100 cm and a depth equal to twice the height of the blocks. Drainage flows through the...

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Abstract

The invention discloses a method for increasing ammonium nitrogen in river water. The method is characterized by including: using natural zeolite powder as a raw material, cement as a binder and aluminum powder, quicklime and surfactantt as foamers; obtaining an aerated concrete building block through blending, mixing, forming, cutting and steaming pressure maintaining. The zeolite aerated concrete building block is used to build a drainage canal or a seepage dam of a small brook, and river water containing ammonia nitrogen flows through the canal or the seepage dam; the zeolite aerated concrete building block has a function of selectively adsorbing ammonia nitrogen in water and is an efficient microorganism carrier material; on one hand, ammonia nitrogen in the water is adsorbed and removed through ion exchange during drainage or during a drainage peak, and on the other hand, loaded microorganisms convert ammonia nitrogen into nitrate during drainage intermission or drainage valley to realize zeolite regeneration.

Description

1. Technical field [0001] The invention relates to a method for reducing agricultural non-point source pollution and purifying polluted river water. 2. Background technology [0002] With the development of urbanization and the aggravation of water pollution, eutrophication has generally occurred in surface water bodies in my country. Most of the urban rivers and landscape water bodies are in the fifth category, and the most common pollutant that exceeds the standard is ammonia nitrogen. This requires enhanced deammonization treatment of drainage ditches and polluted rivers. At present, the treatment of ammonia nitrogen in river water is mainly through river bed aeration to accelerate ammonia nitrification, or through ecological restoration methods, such as biological floating beds, floating islands, etc. to improve the self-purification ability of rivers and reduce the nutrient elements of water bodies. The aeration method requires large investment and operating costs, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28C02F1/42C02F101/16
CPCC02F1/281C02F1/42C02F2101/16C02F2103/007
Inventor 周其胤陈天虎陈斌
Owner ANHUI MEIZIRAN ENVIRONMENTAL TECH
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