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Method for removing algae by using inorganic solid peroxide for inducing peroxymonosulfate to generate singlet oxygen

A peroxide and inorganic solid technology, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problems of complex operation, additional equipment, high investment and operation costs, and achieve Stable chemical properties, convenient transportation and storage, simple and easy operation

Active Publication Date: 2014-02-05
HARBIN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to provide a water treatment method that uses inorganic solid peroxide to induce persulfate to produce singlet oxygen to remove algae, so as to solve the problem of harmful by-products such as trihalomethanes and chlorine gas transportation in the pre-chlorination algae removal process. , Inconvenient storage, potential safety hazards, additional equipment needed for ozone pre-oxidation algae removal, high investment and operation costs, and complicated operations

Method used

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  • Method for removing algae by using inorganic solid peroxide for inducing peroxymonosulfate to generate singlet oxygen
  • Method for removing algae by using inorganic solid peroxide for inducing peroxymonosulfate to generate singlet oxygen

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specific Embodiment approach 1

[0019] Embodiment 1: This embodiment is a water treatment method that utilizes inorganic solid peroxide to induce persulfate to produce singlet oxygen to remove algae, and it is realized through the following steps: a. Monosulfate is added to the water area to be treated according to the mass ratio of 1: (0.5~5), and stirred so that the concentration of peroxysulfate in the water area to be treated is 0.5~500mg / L, and the hydraulic retention reaction is 5~ 60min; b. Carry out coagulation, precipitation, filtration, and disinfection in sequence, that is, complete the water treatment of using inorganic solid peroxide to induce persulfate to produce singlet oxygen to remove algae.

[0020] The water treatment process flow of this embodiment is shown in figure 1 .

[0021] The inorganic solid peroxide and persulfate in this embodiment are stored separately before use.

[0022] The inorganic solid peroxide and peroxymonosulfate described in this embodiment can be made into powder...

specific Embodiment approach 2

[0025] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the inorganic solid peroxide is sodium peroxide (Na 2 o 2 ), calcium peroxide (CaO 2 ), magnesium peroxide (MgO 2 ), barium peroxide (BaO 2), sodium percarbonate (Na 2 CO 4 ), potassium percarbonate (K 2 CO 4 ) in one or several mixtures in any ratio. Other parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0026] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: peroxomonosulfate is sodium peroxosulfate (NaHSO 5 ), potassium persulfate (KHSO 5 ), ammonium persulfate (NH 4 HSO 5 ), calcium persulfate (Ca(HSO 5 ) 2 ), magnesium persulfate (Mg(HSO 5 ) 2 ) in one or several mixtures in any ratio. Other parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention provides a method for removing algae by using inorganic solid peroxide for inducing peroxymonosulfate to generate singlet oxygen and relates to an algae removal method. The algae removal method is used for solving the problems that poisonous byproducts such as trihalomethane are easily generated in a prechlorination algae removal process, chlorine is inconvenient to transport and store, the potential safety hazards exist, and an ozone preoxidation algae removal method needs additional equipment and is high in investment and operating cost and complicated in operation. The algae removal method comprises the following steps: adding the inorganic solid peroxide and the peroxymonosulfate to algae-containing water, stirring, sequentially coagulating, precipitating, filtering and sterilizing so as to complete the algae removal. According to the algae removal method, the generated high-activity singlet oxygen rapidly acts on the algae, kills algae cells and inactivates the algae, so that the purpose of removing algae is reached. As solid reagents, the inorganic solid peroxide and the peroxymonosulfate can be directly added for use without need of additional equipment. The reverse osmosis concentrated solution treatment method has the advantages that the operation is simple and practicable, the reagents are convenient to transport and store, low in cost and easy to obtain, no poisonous and harmful byproducts are generated in the algae removal process, and the reagents can be used on a large scale in water plants.

Description

technical field [0001] The invention relates to a method for removing algae, in particular to a water treatment method for using inorganic solid peroxide to induce persulfate to generate singlet oxygen 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 forme...

Claims

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Application Information

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IPC IPC(8): C02F9/04
Inventor 庞素艳王强江进鲁雪婷郭晓瑜黄亮郭仕达王玲
Owner HARBIN UNIV OF SCI & TECH
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