Water treatment method for oxidation algae removal with high-activity singlet oxygen

A singlet oxygen and high activity technology, applied in the field of algae removal, can solve the problems of high investment and operation costs, potential safety hazards, inconvenient storage, etc., and achieve the effects of convenient storage, easy transportation and easy access.

Inactive Publication Date: 2014-01-22
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the problems that harmful by-products such as trihalomethanes and chlorine gas are easily produced in the process of pre-chlorination algae removal, inconvenient transportation and storage, potential safety hazards, additional equipment required for ozone pre-oxidation algae removal, high investment and operation costs, and complicated operations

Method used

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  • Water treatment method for oxidation algae removal with high-activity singlet oxygen
  • Water treatment method for oxidation algae removal with high-activity singlet oxygen
  • Water treatment method for oxidation algae removal with high-activity singlet oxygen

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Experimental program
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specific Embodiment approach 1

[0021] Specific embodiment one: this embodiment is a water treatment method utilizing highly active singlet oxygen to oxidize and remove algae, and it is realized by the following steps: a, solid bleaching powder and inorganic solid peroxide are according to mass ratio (1~10 ): 1 is added to the algae-containing water, stirred, and under the condition that the peroxide concentration is 10-1000 mg / L and the reaction time is 5-60 min, algae removal is carried out; b, conventional water treatment is carried out: processing in step a After that, coagulation, sedimentation, filtration, and disinfection are carried out in sequence, and the water treatment using highly active singlet oxygen to oxidize and remove algae is completed.

[0022] The bleaching powder and the inorganic solid peroxide in this embodiment are stored separately before use.

[0023] The solid bleaching powder and the inorganic solid peroxide described in this embodiment are mixed and added according to the mass ...

specific Embodiment approach 2

[0026] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the mass ratio of solid bleaching powder to inorganic solid peroxide is (2-9):1. Other parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0027] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the mass ratio of solid bleaching powder to inorganic solid peroxide is (3-8):1. Other parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention discloses a water treatment method for oxidation algae removal with high-activity singlet oxygen, and relates to methods for algae removal. The problems that in a pre-oxidization (chlorine and ozone) algae removal method, equipment needs to be additionally arranged, the operation is complex, and poisonous and harmful by-products are easily produced are solved. The water treatment method for the oxidation algae removal comprises the steps that solid bleaching powder and inorganic solid peroxide are added to water with algae, stirring is carried out, and coagulation, precipitation, filtration and disinfection are carried out in sequence. Hypochlorite ions provided by the bleaching powder in the method for the algae removal fast react with hydrogen peroxide released after the peroxide is dissolved in water to generate the high-activity singlet oxygen, algae cells can be fast killed, algae inactivation is achieved, and the aim of the algae removal is achieved. The high-activity singlet oxygen can be directly added for use as a solid reagent, equipment does not need to be additionally arranged, the operation is simple and easy to carry out, transport and storage are convenient, the poisonous and harmful by-products are not produced, and the method can be applied to water plants in a large scale and is more suitable for emergency treatment in the algae large-scale bloom process.

Description

technical field [0001] The invention relates to a method for removing algae. Background technique [0002] In recent years, the algal blooms caused by the eutrophication of rivers, lakes and seas have attracted widespread attention from all walks of life. The flooding of algae not only affects the water landscape and normal production of aquaculture, but also poses a threat to the living environment of human beings. [0003] Algae and its by-products have brought many adverse effects to the traditional water purification process: (1) causing the deterioration of water quality and causing disgusting smell and taste in drinking water; (2) the death of algae sinking to the bottom to form humus, increasing the water (3) Algae and its soluble metabolites are the precursors of chlorination disinfection by-products; (4) The turbidity formed by algae has high stability, small specific gravity, and is difficult to remove Heavy, not easy to remove in coagulation sedimentation, unremo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C02F1/76
Inventor 江进庞素艳马军
Owner HARBIN INST OF TECH
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