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Wastewater treatment flocculating agent taking wheat bran as raw material, and preparation method of wastewater treatment flocculating agent

A sewage treatment and flocculant technology, applied in water/sewage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., can solve adverse effects on human health and ecological environment, limited application range, and scum production less problems, to achieve the effect of wide application range, good flocculation effect and fast settlement speed

Active Publication Date: 2016-10-12
胡大苇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inorganic flocculants are cheap, but they will have adverse effects on human health and the ecological environment; although organic polymer flocculants are used in a small amount, the scum output is small, the flocculation ability is strong, the flocs are easy to separate, and the effect of removing oil and suspended matter is good , but the residual monomers of this type of polymer have "three-caused" effects (causation, carcinogenicity, and mutagenesis), thus limiting its application range; microbial flocculants are easy to use and have a promising application prospect because of the absence of secondary pollution seductive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A sewage treatment flocculant using wheat bran as a raw material. The preparation method is as follows: add an appropriate amount of wheat bran into a high-temperature-resistant and heatable container, add distilled water 10 times the weight of the wheat bran, raise the temperature to 75°C, and add inorganic Metal salt, then add 3% wheat bran mass surfactant and coagulant, when adding the coagulant, it should be added gradually to make it evenly dispersed in water, and then use an ultrasonic disperser Perform ultrasonic dispersion, stir at 80°C for 2 hours, cool to room temperature and add ethanol solution, stir to fully dissolve the unreacted coagulant aid in the organic solvent ethanol solution, slowly heat to 100°C in a dryer, recover ethanol, and make The moisture content of the wheat bran is lower than 10%, heating is stopped, cooled at room temperature, spray-dried, crushed to a size of 80 mesh, and packaged to obtain the flocculant.

[0021] Wherein, the wheat br...

Embodiment 2

[0023] A sewage treatment flocculant using wheat bran as a raw material. The preparation method is as follows: add an appropriate amount of wheat bran into a high-temperature-resistant and heatable container, add distilled water 20 times the weight of the wheat bran, raise the temperature to 80°C, and add inorganic Metal salt, then add 4.5% wheat bran mass surfactant and coagulant aid, when adding coagulant aid, it should be added gradually to make it evenly dispersed in water, and then use ultrasonic disperser Perform ultrasonic dispersion, stir at 85°C for 2.5h, cool to room temperature and add ethanol solution, stir to fully dissolve the unreacted coagulant aid in the organic solvent ethanol solution, slowly heat to 100°C in a dryer, recover ethanol, Make the moisture content of the wheat bran lower than 10%, stop heating, cool at room temperature, spray dry, pulverize to a size of 90 mesh, and pack to obtain the flocculant.

[0024]Wherein, the wheat bran is the seed coat ...

Embodiment 3

[0026] A sewage treatment flocculant using wheat bran as a raw material. The preparation method is as follows: add an appropriate amount of wheat bran into a high-temperature-resistant and heatable container, add distilled water 30 times the weight of the wheat bran, raise the temperature to 85°C, and add inorganic Metal salt, then add 6% wheat bran mass surfactant and coagulant aid, when adding the coagulant aid, it should be added gradually to make it evenly dispersed in water, and then use an ultrasonic disperser Perform ultrasonic dispersion, stir at 90°C for 3 hours, cool to room temperature and add ethanol solution, stir to fully dissolve the unreacted coagulant aid in the organic solvent ethanol solution, slowly heat to 100°C in a dryer, recover ethanol, and make The moisture content of the wheat bran is lower than 10%, heating is stopped, cooled at room temperature, spray-dried, crushed to a size of 100 mesh, and packed to obtain the flocculant.

[0027] Wherein, the w...

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Abstract

The invention discloses a wastewater treatment flocculating agent taking wheat bran as a raw material, and a preparation method of the wastewater treatment flocculating agent. The preparation method of the wastewater treatment flocculating agent comprises: adding an appropriate amount of the wheat bran into a container, adding distilled water about 10-30 timers of the weight of the wheat bran, rising the temperature to 75-85 DEG C, adding inorganic metal salt under stirring, adding a surfactant and a coagulant about 3-6 wt% of the bran, utilizing ultrasonic dispersion, performing stirring for 2-3 h at 80-90 DEG C, performing heating slowly to 100 DEG C in a dryer, enabling the water content in wheat bran to be lower than 20%, stopping heating, reducing the temperature to the room temperature, performing 80-100 mesh grinding, and obtaining the flocculating agent after package. The flocculating agent provided by the invention has strong hydrophilicity, strong adsorbability and good stability, has very strong adsorption precipitation action on heavy metal, oil stain and solid particles in a wastewater treatment process, and is cheap, practical and non-toxic, thereby having a wide development prospect in the water treatment technology application field.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and specifically relates to a sewage treatment flocculant using wheat bran as a raw material and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of my country's social economy and the rapid increase of population density, the problem of water pollution caused by industrial production and life has become more and more serious. Therefore, different types of sewage treatment processes have been widely used. Sewage treatment is The process of purifying sewage to meet the water quality requirements of a certain water body for drainage or reuse. Sewage treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemical, environmental protection, urban landscape, medical treatment, catering, etc., and it is also increasingly entering the daily life of ordinary people. Sewage treatment can be ...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/56C02F1/28C02F101/20
CPCC02F1/285C02F1/286C02F1/5236C02F1/5254C02F1/5263C02F1/56C02F2101/20C02F2305/04
Inventor 胡大苇
Owner 胡大苇
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