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Method for safely removing algae and settling algae based on sepiolite

A technology of sepiolite and algae, which is applied in chemical instruments and methods, flocculation/sedimentation water/sewage treatment, water/sewage multi-stage treatment, etc. Fast algae speed and complete algae removal effect

Inactive Publication Date: 2013-12-18
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Potassium permanganate, as an oxidant, can remove algae, smell, organic pollutants, etc. in algae-polluted water sources, and has a certain oxidation and removal effect on algae toxins, but when its dosage is too large, it will increase the chroma of the water body

Method used

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  • Method for safely removing algae and settling algae based on sepiolite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] In 1L algal concentration is 1.6*10 9 0.35 mg of potassium permanganate was added to simulated water with a pH of 7.5, pre-oxidized for 15 minutes, and then 3.75 mg of chitosan and 15 mg of sepiolite were added. Stir at a speed of 400 rpm for 5 minutes to mix the powder. During the stirring process, it can be observed that the algae in the water body begin to agglomerate; then stir at a slow speed of 30 rpm for 15 minutes, and it can be observed that the aggregates gradually increase. , and the volume of the same condensate is getting bigger and bigger. After standing still for half an hour, the algae condensate sinks to the bottom of the water, the water quality is clear, and the algae removal efficiency can reach 92.5%.

Embodiment 2

[0018] In 1L algal concentration is 4.5*10 9 0.5mg potassium permanganate was added in the simulated water body with pH of 7.5, and after pre-oxidation for 15 minutes, 5mg chitosan and 50mg sepiolite were added. Stir at a speed of 400 rpm for 5 minutes to mix the powder. During the stirring process, it can be observed that the algae in the water body begin to agglomerate; then stir at a slow speed of 30 rpm for 15 minutes, and it can be observed that the aggregates gradually increase. , and the volume of the same condensate is getting bigger and bigger. After standing still for half an hour, the algae condensate sinks to the bottom of the water, the water quality is clear, and the algae removal efficiency can reach 94.8%.

Embodiment 3

[0020] In 1L algal concentration is 3.2*10 9 0.05 mg potassium permanganate per ml, pH 7.5 in the simulated water, pre-oxidized for 15 minutes, then added 2.5 mg chitosan and 25 mg sepiolite. Stir at a speed of 400 rpm for 5 minutes to mix the powder. During the stirring process, it can be observed that the algae in the water body begin to agglomerate; then stir at a slow speed of 30 rpm for 15 minutes, and it can be observed that the aggregates gradually increase. , and the volume of the same condensate is getting bigger and bigger. After standing still for half an hour, the algae condensate sinks to the bottom of the water, the water quality is clear, and the algae removal efficiency can reach 92.2%.

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Abstract

The invention relates to a method for safely removing algae and settling algae based on sepiolite, wherein united algae removal is carried out by taking potassium permanganate, 30-60-mesh sepiolite and chitosan as algicide. The implementation method comprises the following steps: inputting a certain amount of potassium permanganate into an algae polluting water body for pre-oxidizing for 15-300 minutes; dissolving chitosan by hydrochloric acid or acetic acid, then, adding the chitosan liquor and sepiolite into the oxidized algae polluting water body, wherein algae flocculate and agglomerate within 360 minutes and submerged to water bottom, and the water quality is clear. The inputting amounts of potassium permanganate, sepiolite and chitosan are as follows: 0.01mg / L-0.5mg / L of potassium permanganate, 10mg / L-50mg / L of sepiolite and 1mg / L-5mg / L of chitosan. The method is not only less in water quality pollution, safe and reliable, fast in algae removal, thorough in algae removal and small in use level of the algicide, but also enablessubmerges the flocculated algae to be submerged to the water bottom to maintain a clean a water surface without affecting normal operation and attraction of the water surface, so that the method is applicable to algae removal on the water surfaces of lakes, reservoirs and park landscapes.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a sepiolite-based method for safely removing algae and allowing algae to settle. Background technique [0002] In recent years, with the deepening of eutrophication in lakes and rivers, "water blooms" have occurred frequently all over the world, bringing a series of environmental problems, which have attracted widespread attention. At present, there are many methods for preventing and controlling algae blooms, such as chemical methods such as copper sulfate and chlorine dioxide to remove algae, or polymer coagulants such as PAC and polyacrylamide to remove algae, but they all have certain disadvantages. Among them, copper sulfate is the most widely used algaecide, but copper sulfate will release copper ions during the algae removal process, and copper ions will affect the normal life of non-algae organisms and damage the ecosystem. In addition, the use of copper sulfate w...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F1/72C02F1/52
Inventor 潘凌潇刘汉湖李凯白向玉周广演董兵
Owner CHINA UNIV OF MINING & TECH
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