Integral denitrification combination device and denitrification method

A combined device and denitrification technology, applied in chemical instruments and methods, multi-stage water/sewage treatment, water pollutants, etc., can solve problems such as retention, and achieve the effects of simple operation, space saving, and wide application of water quality

Inactive Publication Date: 2015-07-15
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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Problems solved by technology

However, the sewage treated by this process still contains some nitrate nitrogen and nitrite nitrogen, resulting in the inorganic nitrogen removal rate of this process staying at 75±10%. Therefore, in order to achieve a higher nitrogen removal rate, the effluent Denitrification of nitrate nitrogen and nitrite nitrogen is necessary

Method used

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  • Integral denitrification combination device and denitrification method

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Embodiment Construction

[0045] The integrated denitrification combined device provided by the present invention mainly includes:

[0046] An upflow reactor, the shell of which is a cylindrical double-layer shell, the outer layer is an insulating layer, the inner layer is a reaction layer, and the top is provided with a water outlet g and a pH probe extension inlet h;

[0047] The inner wall of the middle part of the upflow reactor is provided with an annular retaining ring 2, corresponding to the annular retaining ring 2, there is a circle of annular baffles 1 inclined up and down by 45°, and the annular baffles 1 are fixed on the upper and lower sides of the upflow reactor. On the shaft sleeve, a curved water flow channel is formed between the annular retaining ring 2 and the annular baffle 1, and the three-phase separator in the upflow reactor of the present invention is composed of the annular retaining ring 2, the annular baffle 1 and the water flow channel.

[0048] The top of the annular baffle 1...

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Abstract

The invention discloses an integral denitrification combination device which mainly comprises an up-flow reactor and an up-flow immobilized bacteria-selenastrum capricornutum reactor. The invention further discloses a method for wastewater denitrification by adopting the integral denitrification combination device. The device has the characteristics of being high in wastewater denitrification efficiency, low in investment and energy consumption, small in occupied area, simple and convenient to operate, wide in application range of water quality, low in environmental risk and the like.

Description

technical field [0001] The invention relates to a high-efficiency denitrification device, in particular to a novel integrated whole-process autotrophic denitrification-denitrification-immobilized bacteria and algae denitrification combined device. [0002] The present invention also relates to a method for denitrification using the above-mentioned device Background technique [0003] With the rapid development of my country's industry and agriculture and the process of urbanization, the discharge of industrial wastewater and domestic sewage is increasing day by day, and the development activities of lake basins have intensified. In addition, people's environmental awareness has been weak for a period of time. The water quality of most lakes in my country has declined and the ecosystem has degraded. , frequent outbreaks of cyanobacteria blooms, lake eutrophication presents a rapid development trend. Sewage treatment plants are an important source of exogenous pollution in man...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F101/38
Inventor 张莉杨嘉春王圣瑞
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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