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A flocculant used for sewage treatment in Chinese patent medicine production enterprises and its preparation method

A sewage treatment and flocculant technology, applied in the direction of adsorption water/sewage treatment, flocculation/sedimentation water/sewage treatment, chemical instruments and methods, etc., can solve the problems of poor biodegradability, complex composition, high concentration, etc., to solve the sewage problem , reduce the cost is too high, improve the effect of adsorption capacity

Active Publication Date: 2014-10-22
JIANGSU SHANGDA WATER AFFAIR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Practice has proved that some Chinese patent medicine production wastewater has the characteristics of high concentration of organic matter, complex components, and poor biochemical properties. During the commissioning and use of actual projects, how to carry out research on the treatment technology of traditional Chinese medicine sewage, and obtained good treatment results , has been troubled by many Chinese patent medicine companies to further expand production scale

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) Take 445g of 1000-mesh ultrafine carapace crushed material, 50g of modified chitosan, and 0.5g of nano-titanium dioxide, stir evenly, and let it stand for 0.5 hours to make its properties preliminarily mature, and make ingredient 1;

[0026] 2) Take 30g of muscovite flakes, 20g of 10-mesh activated carbon, and 450g of 30-mesh zeolite, mix and stir evenly, and make ingredient 2;

[0027] 3) Finally, mix the ingredients prepared in step 1 and step 2 evenly, and while mixing, add 4.5g of phytic acid dropwise to make 1000g of flocculant.

[0028] The flocculant prepared with this ratio is applied to the sewage treatment of a certain Chinese patent medicine. The COD of the sewage discharge wastewater is 3250-4120mg / L. After the flocculation and sedimentation of a sufficient amount of flocculant, combined with conventional aeration treatment, the COD effluent is 147.3mg / L, the COD removal rate can reach more than 95.5-96.5%.

Embodiment 2

[0030] 1) Take 320g of 1000-mesh ultrafine carapace crushed material, 70g of modified chitosan, and 2g of nano-titanium dioxide, stir evenly, and let it stand for 1.5 hours to make its properties preliminarily mature, and make ingredient 1;

[0031] 2) Take 34g of muscovite flakes, 40g of 30-mesh activated carbon, and 530g of 30-mesh zeolite, mix and stir evenly, and make ingredient 2;

[0032] 3) Finally, mix the ingredients prepared in step 1 and step 2 evenly, and add 4 g of phytic acid dropwise while mixing to make 1000 g of flocculant.

[0033] A proper amount of this flocculant was used to treat high-concentration Chinese patent medicine wastewater with COD and BOD of 3200mg / L and 1650mg / L in the influent water of a Chinese patent medicine factory. 43.5mg / L, the removal rates reached 98.2% and 97.4% respectively.

Embodiment 3

[0035] 1) Take 382g of 1000-mesh ultrafine carapace crushed material, 110g of modified chitosan, and 3g of nano-titanium dioxide, stir evenly, and let it stand for 2 hours to make its properties preliminarily mature, and make ingredient 1;

[0036] 2) Take 21g of muscovite flakes, 20g of 30-mesh activated carbon, and 460g of 30-mesh zeolite, mix and stir evenly, and make ingredient 2;

[0037] 3) Finally, mix ingredients 1 and 2 evenly, and add 4g of phytic acid dropwise while mixing to make 1000g of flocculant. Applied to sewage treatment of Chinese patent medicine.

[0038]A proper amount of this flocculant was used to treat high-concentration Chinese patent medicine wastewater with COD and BOD of 3200mg / L and 1650mg / L respectively in the influent water of a Chinese patent medicine factory. 69.7mg / L, the removal rates reached 97.2% and 95.8%, respectively. At the same time, before and after comparison of heavy metals, the ratio of heavy metal content decreased by an averag...

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Abstract

The invention discloses a flocculating agent for treating sewage in Chinese patent medicine production enterprises, wherein the flocculating agent comprises the following compositions: 30-45% of carapace crushed materials, 3-12% of modified chitosan, 0.05-0.5% of nanometer titanium dioxide, 0.1-0.5% of phytic acid, and 45-55% of zeolite; in order to optimize the effect, the flocculating agent is also added with 1-5% of white mica and 1-5% of active carbon. The flocculating agent provided by the invention is utilized to treat the sewage; the flocculating agent provided by the invention has very high efficiencies of removing COD (chemical oxygen demand) and BOD (biochemical oxygen demand); and the flocculating agent provided by the invention is efficient and economical.

Description

technical field [0001] The invention relates to a sewage treatment flocculant and a preparation method thereof, which is particularly suitable for the treatment of industrial sewage produced by Chinese patent medicines. Background technique [0002] Chinese patent medicines that people often say in daily life refer to ready-made medicines that are made from Chinese medicinal materials according to certain principles of treatment and can be taken at any time, such as various pills, powders, granules, etc. The advantages are that it is ready-to-use, suitable for urgent needs, convenient to store, can be carried around, saves the decoction process, and eliminates the peculiar smell and bad stimulation when taking the traditional Chinese medicine decoction. [0003] The production of Chinese patent medicine will produce a large amount of wastewater during the process of raw material washing, drug extraction and washing, which has the characteristics of high concentration of orga...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/56C02F1/28B01J20/30B01J20/24
Inventor 徐卫东顾杨倪丹丁青松
Owner JIANGSU SHANGDA WATER AFFAIR
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