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Method utilizing biological soil crust to prepare coagulant aids

A technology of biological crust and coagulant aid, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of high cost and small production scale

Inactive Publication Date: 2013-06-19
溧阳市天目湖保健品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, because biological flocculants are still in the research stage, the production scale is small, the cost is high, and they have not been widely used.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Make the coagulant as follows:

[0021] (1) Acquisition of biological crusts: Use a shovel to shovel down the biological crusts growing on the ground, pay attention to scoop up the whole crusts, and shake off the soil on the bottom of the crusts;

[0022] (2) Pressurization treatment of biological crusts: crush and mix the biological crusts with a mixer, then place the biological crusts in a pressurized device, apply a pressure of 5 atmospheres to the biological crust debris mixture, and apply Pressure time 20 minutes;

[0023] (3) Curing and modification of biological crusts: First, soak the biological crusts treated in step (2) in a sodium hydroxide solution with a pH of 15 for 40 minutes, and then place the soaked biological crusts at 45 degrees Celsius In the modification solution, the modification reaction time is 55 minutes, and the modification solution is 1% methacrylic acid formaldehyde;

[0024] (4) Removal of solid residues: first sieve the above liquid wit...

Embodiment 2

[0030] (1) Acquisition of biological crusts: Use a shovel to shovel down the biological crusts growing on the ground, pay attention to scoop up the whole crusts, and shake off the soil on the bottom of the crusts;

[0031] (2) Pressurization treatment of biological crusts: crush and mix the biological crusts with a mixer, then place the biological crusts in a pressurized device, apply a pressure of 6 atmospheres to the biological crust debris mixture, and apply Pressure time 15 minutes;

[0032] (3) Curing and modification of biological crusts: First, soak the biological crusts treated in step (2) in a sodium hydroxide solution with a pH of 15 for 30 minutes, and then place the soaked biological crusts at 50 degrees Celsius In the modification solution, the modification reaction time is 70 minutes, and the modification solution is 0.8% methacrylic acid formaldehyde;

[0033] (4) Removal of solid residues: first sieve the above liquid with 200 μm sieve to remove large particle...

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Abstract

The invention provides a method utilizing biological soil crust to prepare coagulant aids. According to the method, the biological soil crust is utilized as main raw material, and a series of processing is conduced to the biological soil crust to obtain the coagulant aids used for sewage treatment. The method has the advantages of being environment-friendly and obvious in coagulation aid effect.

Description

technical field [0001] The invention relates to a preparation method of a coagulation aid, in particular to a method for preparing a coagulation aid by using biological crusts. Background technique [0002] Among water treatment methods, flocculation is one of the important methods. The currently used flocculants and coagulants are mainly inorganic compounds and synthetic organic compounds. The large amount of inorganic flocculants is easy to cause secondary pollution, especially the large-scale application of aluminum salts, which has an increasingly prominent impact on the environment, especially for the treatment of drinking water. A large amount of aluminum salts will lead to an increase in the incidence of Alzheimer's disease. Due to the use of most artificially synthesized polymer organic compounds as flocculants or coagulants, monomers remaining in water are toxic and harmful to human health, such as polyacrylamide, which is commonly used at present. The current eme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/56
Inventor 彭江晨芮旭婷徐清华彭继红
Owner 溧阳市天目湖保健品有限公司
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