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Physicochemical-artificial wetland combined process for strengthening treatment of fluorine and arsenic sewage

A technology for artificial wetlands and enhanced treatment, applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc.

Inactive Publication Date: 2015-07-15
UNIVERSITY OF CHINESE ACADEMY OF SCIENCES +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In recent years, scholars from various countries have conducted a lot of research on the application and mechanism of wetlands, but they mainly focus on the research on the treatment of domestic sewage and mining wastewater. The main pollutants are nitrogen, phosphorus and heavy metals. Rare reports of treatment studies

Method used

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  • Physicochemical-artificial wetland combined process for strengthening treatment of fluorine and arsenic sewage

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Embodiment Construction

[0021] Further illustrate structure and working method of the present invention below in conjunction with accompanying drawing:

[0022] The invention provides a physicochemical-constructed wetland combined treatment process for strengthening the removal of fluorine and arsenic, the structure of which is as follows figure 1 As shown, it consists of physical and chemical treatment device (I) and constructed wetland treatment device (II);

[0023] see figure 1 , the physical and chemical treatment device includes a water inlet system, an adsorption packing layer and a water outlet system; the adsorbent of the adsorption packing layer 10 is activated alumina with a particle size of 3-5 mm, and the bottom of the adsorption packing layer is filled with coarse pebbles with a particle size of 15-30 mm 11. The water inlet pipe 3 of the water inlet system is placed between coarse pebbles; the upper layer of the adsorption filler is filled with fine pebbles 9 with a particle size of 5-...

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Abstract

The invention provides an adsorption-artificial wetland combined treatment system for strengthening treatment of sewage containing fluorine and arsenic; the system is composed of an adsorption device and an artificial wetland treatment device which are connected in order. The adsorption device is composed of a water inlet system, an adsorption packing layer and a water outlet system, the water inlet system allows water to be introduced from the lower layer, and the sewage is adsorbed by an adsorption packing and then is discharged from the upper layer water outlet system; the artificial wetland treatment device comprises an upper-layer wetland, a lower-layer wetland, a water inlet system and an effluent collection system, the upper layer of the water inlet system is used for distributing water, the sewage passes through the upper-layer wetland and the lower-layer wetland and then is discharged out of the device by the effluent collection system. With adsorption-artificial wetland combined treatment, the life of the artificial wetland can be prolonged. The system has the advantages of small occupation area and good removal effect on fluorine and arsenic.

Description

technical field [0001] The invention relates to a physicochemical-artificial wetland combined treatment process for strengthening treatment of fluorine and arsenic polluted water, which belongs to the technical field of environmental protection and water treatment. Background technique [0002] In recent years, with the vigorous development of industry, agriculture, mining, metallurgy and other industries, the pollution of water resources has increased to a certain extent. The content of fluorine and arsenic in groundwater and surface water in many areas of our country seriously exceeds the standard. Water containing high concentrations of fluorine and arsenic not only satisfies human water use, but also brings fatal harm to people, which has troubled people for a long time. For the sake of human life, health and safety, it is necessary to develop efficient, economical and environmentally friendly drinking water and industrial Wastewater defluorination and arsenic removal p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 刘新春李娟琚宜文余志晟吴建光张平易鑫
Owner UNIVERSITY OF CHINESE ACADEMY OF SCIENCES
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