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Method for removing algae through strengthening coagulation by using peroxy carbonate

A peroxycarbonate and carbonate technology, applied in chemical instruments and methods, oxidized water/sewage treatment, special compound water treatment, etc., can solve problems such as low algae removal efficiency, poor precipitation effect, and secondary pollution. , to achieve the effect of enhancing coagulation effect, avoiding secondary pollution and convenient operation

Active Publication Date: 2018-02-23
高密市孚日水务有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In summary, the existing technologies commonly used for algae removal still have problems such as high cost, secondary pollution, poor precipitation effect of coagulants on algae, and low algae removal efficiency. The algae removal method of the above-mentioned problems that exist further improves the treatment effect of algae removal

Method used

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  • Method for removing algae through strengthening coagulation by using peroxy carbonate

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Embodiment 1

[0040] 1) Mix sodium percarbonate and polyaluminum chloride (PAC) according to the ratio of volume to mass ratio of 1:9 to form a mixed agent;

[0041] 2) Add the mixed agent in step 1) into the algae-containing water body, and the concentration of the mixed agent added in the algae-containing water body is respectively: PAC45mg / L, sodium percarbonate 5mg / L;

[0042] 3) After the addition is completed, stir the water body at a rapid speed of 100r / min, a medium speed of 80r / min, and a slow speed of 30r / min, and then settle for 30 minutes to complete the algae removal process.

Embodiment 2

[0044] The difference between embodiment 2 and embodiment 1 is: described peroxycarbonate is potassium peroxycarbonate; Described coagulant is the mixture of ferrous sulfate, potassium aluminum sulfate, the mixture of potassium peroxycarbonate and coagulant The volume-to-mass ratio is 1:1; the speeds of the fast, medium and slow stirring are: 80r / min, 60r / min, and 30r / min respectively; the settling time is 35min; The total concentration in water is 40mg / L.

Embodiment 3

[0046] The difference between embodiment 3 and embodiment 1 is: described peroxycarbonate is sodium percarbonate; Described coagulant is the mixture of sodium aluminate and iron sulfate, the volume of sodium percarbonate and coagulant The mass ratio is 1:5; the speeds of the fast, medium and slow stirring are: 200r / min, 150r / min, 50r / min respectively; the static settling time is 40min; The total concentration is 250mg / L.

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Abstract

The invention relates to a method for removing algae through strengthening coagulation by using peroxy carbonate. The method specifically comprises the following steps: 1) mixing percarbonate and a coagulant according to a volume / mass ratio of 1 to (1 to 60), so as to form a mixed agent; 2) adding the mixed agent obtained in the step 1) into algae-containing water, wherein the total concentrationof the mixed agent after the mixed agent is added into the algae-containing water is 40mg / L to 250mg / L; 3) after the adding is completed, carrying out high-speed, medium-speed and low-speed stirring on the water sequentially, and then, carrying out static settling, thereby completing a algae removing process. The method provided by the invention can be carried out at normal temperature under normal pressure, is simple in process, convenient in operation, low in preparation cost, convenient in raw material source and easy in industrialization, has no need of additional energy and has a good application prospect in the field of environmental pollution administration.

Description

technical field [0001] The invention relates to the technical field of water body purification, in particular to a method for strengthening coagulation and removing algae by using peroxycarbonate. Background technique [0002] In recent years, due to the interference of human production and life, serious water eutrophication has occurred in rivers, lakes and seas in many places. The salient feature of eutrophic water is the excessive reproduction of planktonic algae, especially for our production and domestic water. On the one hand, the massive reproduction of algae will greatly reduce the water quality of the water body. On the other hand, these algae often adhere to the surface of the filter material to block the filter tank, affecting the normal operation of the water plant and seriously affecting the safety of drinking water. [0003] At present, the algae removal technologies in water plants mainly include pre-oxidation, coagulation sedimentation, membrane filtration, d...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/72
CPCC02F1/5245C02F1/722C02F2001/007C02F2305/023
Inventor 罗从伟武道吉谭凤训许诺王凯周伟伟高静
Owner 高密市孚日水务有限公司
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