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Method for treating perchlorate in inorganic water body by using continuous flow anaerobic bioreactor

A technology of perchlorate and anaerobic organisms, applied in the field of water treatment, can solve the problems of affecting the removal effect of autotrophic reduction perchlorate, increasing the by-products of water supply disinfection treatment, hindering the release of electron donor hydrogen, etc., and achieving reduction Secondary pollution problem, reduction of sludge treatment cost, slow consumption effect

Inactive Publication Date: 2014-07-30
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the disadvantages of this type of treatment method are: the addition of organic carbon sources leads to increased costs and subsequent organic pollution, especially for drinking water and groundwater, subsequent organic pollution will lead to by-products of water disinfection treatment Increase
Iron will passivate during the corrosion process to prevent the corrosion of iron, thereby hindering the release of electron donor hydrogen and affecting the removal effect of autotrophic reduction perchlorate

Method used

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  • Method for treating perchlorate in inorganic water body by using continuous flow anaerobic bioreactor
  • Method for treating perchlorate in inorganic water body by using continuous flow anaerobic bioreactor
  • Method for treating perchlorate in inorganic water body by using continuous flow anaerobic bioreactor

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Experimental program
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Effect test

Embodiment 1

[0040] A packed reactor is used, and the volume ratio of zeolite and sulfur particles is alternately filled in the reactor packing layer at a ratio of 2:1 to a height of 20 cm. The particle size of the zeolite particle is 3 mm, and the particle size of the sulfur particle is 1 mm. Let the sludge domesticated by sulfur particles stand for 2 hours, take the sludge and fill it into the reactor filler (the amount of sludge finally accounts for 1 / 7 of the effective volume of the reactor), equipped with water pumps for perchlorate and inorganic salts Enter the reactor until the water body fills the reactor until it is close to the water outlet sampling port, let it stand for 2 days, and then start continuous water inflow, continuous flow anaerobic treatment of perchlorate, the water flow rate is maintained at 0.35 L / h, and the temperature of the treatment process is controlled at 26°C.

[0041] The initial concentration of perchlorate is controlled to be 50mg / L, and the concentratio...

Embodiment 2

[0044] A packed reactor is used, and the volume ratio of zeolite and sulfur particles is alternately filled in the reactor packing layer at a ratio of 3:1 to a height of 20 cm. The particle size of the zeolite particles is 3 mm, and the particle size of the sulfur particles is 3 mm. Let the sludge domesticated by sulfur particles stand for 3 hours, take the sludge and fill it into the reactor filler (the amount of sludge will eventually account for 1 / 5 of the effective volume of the reactor), equipped with water pumps for perchlorate and inorganic salts Enter the reactor until the water body fills the reactor until it is close to the water outlet sampling port, let it stand for 3 days, and then start continuous water intake, continuous flow anaerobic treatment of perchlorate, the water flow rate is 0.20L / h, and the temperature of the treatment process is controlled at 36°C.

[0045] The initial concentration of perchlorate is controlled at 140mg / L, and the concentration of eac...

Embodiment 3

[0048] A packed reactor is used, and the volume ratio of zeolite and sulfur particles is alternately filled in the reactor packing layer at a ratio of 2.5:1 to a height of 20 cm in the packing column. The particle size of the zeolite particle is 2 mm, and the particle size of the sulfur particle is 2 mm. Let the sludge domesticated by sulfur particles stand for 2.5 hours, take the sludge and fill it into the reactor filler (the amount of sludge finally accounts for 1 / 6 of the effective volume of the reactor), and the water body with perchlorate and inorganic salts Pump into the reactor until the water body fills the reactor until it is close to the water outlet sampling port, let it stand for 2.5 days, and then start continuous water inflow, continuous flow anaerobic treatment of perchlorate, water flow rate is 0.30L / h, and the temperature of the treatment process is controlled at 30°C.

[0049] The initial concentration of perchlorate is controlled to be 100mg / L, and the conc...

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Abstract

The invention discloses a method for treating perchlorate in an inorganic water body by using a continuous flow anaerobic bioreactor. The method comprises the steps of filling a sulfur particle and zeolite mixture as a carrier in a reactor; inoculating acclimated activated sludge to form a biological membrane; carrying out continuous anaerobic reduction on perchlorate in the water body. The method is used for treating water bodies containing perchlorate and inorganic salts, the temperature of the reactor system is controlled within 26-36 DEG C, and the removal rate can be up to more than 80% if the system continuously operates for more than one month. The continuous anaerobic reduction method for perchlorate in the water body is capable of successfully realizing the nontoxic transformation of perchlorate under an inorganic water environment and transforming perchlorate ions into chloride ions, free of organism addition and incapable of causing secondary pollution to organisms, and has the advantages of low secondary pollution, low operation cost, high treatment efficiency, capability of buffering the pH value of the water body and softening the water body, simplicity and convenience in preparation and the like so as to be a good method suitable for purifying inorganic water environments.

Description

technical field [0001] The invention relates to a method for treating perchlorate in inorganic water by a continuous flow anaerobic bioreactor, belonging to the technical field of water treatment. Background technique [0002] Perchlorate exists in various aspects such as military, industry, chemical industry, natural fertilizer minerals and air aerosols, resulting in the widespread distribution of perchlorate in the natural environment, and its migration in the environment, especially in drinking water sources The infection of the environment will cause certain harm to the human body and organisms. Perchlorate will competitively inhibit and hinder the absorption of iodide ions by the thyroid gland after ingestion into the human body, affect the physiological function of the thyroid gland, destroy the synthesis of thyroid hormones, and then lead to the disorder of human metabolism and hinder the normal growth and development of the human body. Physiological dysfunction of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28
Inventor 杨志泉江毅
Owner SOUTH CHINA UNIV OF TECH
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