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Preparing method and application of ecological matrix particles for river water body enhanced nitrogen removal

A matrix particle and ecological technology, applied in the field of preparation of ecological matrix particles, can solve the problems of insufficient carbon source and low TN removal rate, and achieve the effects of low cost, abundant raw materials, and easy production and preparation

Active Publication Date: 2017-02-01
郑州大学环境技术咨询工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above situation, in order to overcome the deficiencies in the prior art, the purpose of the present invention is to provide a preparation method and application of ecological matrix particles for enhanced denitrification of river water, which can effectively solve the problem of low C / N in river water and the availability of microorganisms. Insufficient carbon source, denitrification is inhibited, and TN removal rate is low

Method used

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  • Preparing method and application of ecological matrix particles for river water body enhanced nitrogen removal

Examples

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Embodiment 1

[0020] The present invention in concrete implementation, comprises the following steps:

[0021] (1) Ingredients:

[0022] The ecological matrix particles are made of the following raw materials by weight: 5% corn cob, 20% diatomite, 20% calcium-based bentonite, 35% zeolite powder and 20% slag portland cement;

[0023] (2) Modification of corncobs: crush corncobs into particles passing through a 40-60 mesh sieve, add sodium hydroxide solution with a mass concentration of 2%, rinse with water after soaking for 2 hours until the pH is neutral, and place in an oven at 60°C Dry and irradiate with ultraviolet light for 10 hours to obtain modified corncobs (granules);

[0024] (3) Granulation: Mix diatomite, calcium-based bentonite, zeolite powder, slag Portland cement and modified corncobs evenly with a mixer, and put them into a round pot granulator to granulate at 20-25r / min Under the rotating speed, use the sprayer to continuously spray water mist into the granulator, so that ...

Embodiment 2

[0031] The present invention in concrete implementation, comprises the following steps:

[0032] (1) Ingredients:

[0033] The ecological matrix particles are made of the following raw materials by weight: 4% corn cob, 19% diatomite, 19% calcium-based bentonite, 33% zeolite powder, 12% ordinary Portland cement and 13% fly ash;

[0034] (2) Modification of corncobs: crush corncobs into particles passing through a 40-60 mesh sieve, add sodium hydroxide solution with a mass concentration of 2%, soak for 2 hours, rinse with water until the pH is neutral, and place in an oven at 60°C Dry and irradiate with ultraviolet light for 10 hours to obtain modified corncobs (granules);

[0035] (3) Granulation: Stir and mix diatomite, calcium-based bentonite, zeolite powder, ordinary Portland cement, fly ash and modified corncobs evenly, put them into a round pot granulator for granulation, and granulate at 20-25r At the rotation speed of / min, use a sprayer to continuously spray water mis...

Embodiment 3

[0039] The batching can also be made from the following raw materials by weight: 3% corn cob, 30% diatomite, 35% zeolite powder, 11% slag portland cement and 11% fly ash. The preparation method is the same as in the examples 1.

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Abstract

The invention relates to a preparing method and application of ecological matrix particles for river water body enhanced nitrogen removal. The problems that C / N of a river water body is low, a carbon source capable of being used by microorganisms is insufficient, the denitrification effect is inhibited, and the TN removal rate is small can be effectively solved. Corncob powder is smashed, added into a sodium hydroxide solution to be soaked, dried, irradiated by ultraviolet light to obtain modified corncob; a high-permeability porous inorganic material, an inorganic binder and the modified corncob are stirred to be mixed uniformly and pelleted; the prepared spherical particles are laid on a flat plate, placed in a shady and cool place, cured, and sprayed with water in the morning and evening every day until particle surfaces are moist, curing is completed, and the ecological matrix particles can be obtained through airing. The ecological matrix particles can be used as matrix filler in riverway in-situ / heterotopias recovery technology of an ecological floating bed, an ecological filtering dam, an ecological percolation island, an ecological revetment, a constructed wetland, an ecological filter tank, an ecological filter bed and the like. The ecological matrix particles are rich in raw material, easy to produce and prepare, low in cost, good in use effect, long in service life, huge in economic and social benefit.

Description

technical field [0001] The invention relates to the field of water ecological restoration materials, in particular to a preparation method and application of ecological matrix particles for enhanced denitrification of river water. Background technique [0002] River ecosystem is one of the most important ecosystems in nature, which is closely related to human health, social development and economic growth. With the rapid development of the economy, water environment quality problems frequently occur. Although the pollution of COD and ammonia nitrogen in river water has been greatly reduced, the pollution of nutrients such as nitrogen and phosphorus is becoming more and more prominent. Moreover, the river water pollution control indicators lack the monitoring of total nitrogen, and the eutrophication trend of the receiving water body is becoming more and more serious. With the continuous deepening of the construction of ecological civilization, the national "Water Pollution ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/10C02F3/00C02F101/16C02F101/38
CPCC02F3/00C02F3/104C02F3/105C02F2003/001C02F2101/16C02F2101/38Y02W10/10
Inventor 于鲁冀范鹏宇张新民李廷梅程璐璐张广毅陈涛
Owner 郑州大学环境技术咨询工程有限公司
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