Primary decolorizer for treating high-chromaticity chemical industry wastewater

A chemical wastewater and decolorizing agent technology, applied in water/sewage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of high price, difficult regeneration, high operating cost of ozone generator, etc., to achieve The effect of reducing chroma

Inactive Publication Date: 2017-04-26
ANHUI SUQI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The conventional coagulation decolorization method cannot effectively achieve the decolorization effect; the main advantage of adsorption decolorization is that the colored substance is removed from the water by adsorption, and the structure of the colored substance is retained during the adsorption process. The adsorbents used include activated carbon, molecular sieve, Activated aluminum, granular activated carbon, diatomaceous earth and sawdust, etc. Among them, activated carbon has long been used as an exc

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Add 2 parts of column chromatography silica gel and 0.5 part of carrageenan to 15 parts of pozzolan, and heat up to 115-120 ℃ at a heating rate of 5 ℃ / min for 15 minutes, then add 0.5 part of magnesium aluminum silicate and 0.2 Parts of nano-zinc oxide, continue mixing at 115-120 ° C for 10 min, to obtain material I;

[0026] (2) add 3 parts of sodium carboxymethyl cellulose and 2 parts of molecular sieve original powder to 10 parts of stone powder, grind for 15min, then heat up to 110-115 ℃ with a heating rate of 5 ℃ / min for 10min, obtain material II ;

[0027] (3) Add 1 part of pregelatinized starch and 0.5 part of hydrogenated palm oil to 7 parts of wheat straw dry powder, and heat the temperature to 105-110 ℃ at a heating rate of 5 ℃ / min for 10 minutes, then add 0.5 part of sodium gluconate and 0.5 part of calcium propionate, continue to heat and mix at 105-110 ° C for 5 min, to obtain material III;

[0028] (4) Add material II and material III to material I, ...

Embodiment 2

[0033] (1) Add 3 parts of column chromatography silica gel and 0.5 part of carrageenan to 15 parts of pozzolan, and heat up to 115-120 ℃ at a heating rate of 5 ℃ / min for 15 minutes, then add 1 part of magnesium aluminum silicate and 0.2 Parts of nano-zinc oxide, continue mixing at 115-120 ° C for 10 min, to obtain material I;

[0034] (2) add 3 parts of sodium carboxymethyl cellulose and 1 part of molecular sieve original powder to 10 parts of stone powder, grind for 15min, then heat up to 110-115 ℃ with a heating rate of 5 ℃ / min for 10 minutes, obtain material II ;

[0035] (3) 2 parts of pregelatinized starch and 0.5 part of hydrogenated palm oil were added to 7 parts of wheat straw dry powder, and the temperature was raised to 105-110 ℃ at a heating rate of 5 ℃ / min for 10 minutes, and then 0.5 part of sodium gluconate was added. and 0.5 part of calcium propionate, continue to heat and mix at 105-110 ° C for 5 min, to obtain material III;

[0036] (4) Add material II and m...

Embodiment 3

[0040] The same batch of high-chroma chemical wastewater was subjected to primary decolorization treatment using the decolorizing agents prepared in Examples 1 and 2, and the treatment effect was measured. The results are shown in Table 1.

[0041] The treatment effect of the prepared decolorizer in table 1 on high-chroma chemical wastewater

[0042] project Example 1 Example 2 Chroma reduction rate 95.9％ 96.6％ COD value reduction rate 57.8％ 55.3％

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PUM

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Abstract

The invention discloses a primary decolorizer for treating high-chromaticity chemical industry wastewater and relates to the technical field of treatment of pesticide wastewater. The primary decolorizer is prepared from the following raw materials in parts by weight: 10-15 parts of volcanic ash, 10-15 parts of rock flour, 5-10 parts of dry wheat straw powder, 3-5 parts of sodium carboxymethyl cellulose, 2-4 parts of column chromatography silica gel, 1-2 parts of raw molecular sieve powder, 1-2 parts of pregelatinized starch, 0.5-1 part of carrageenan, 0.5-1 part of sodium gluconate, 0.5-1 part of aluminum magnesium silicate, 0.3-0.5 part of calcium propionate, 0.3-0.5 part of hydrogenated palm oil and 0.1-0.2 part of nano zinc oxide. According to the decolorizer disclosed by the invention, the chromaticity reduction rate can reach 95% or more, and the COD value can be lowered by 50% or more; and the decolorizer is precipitated out in a precipitate manner and can be removed from the wastewater through filtering.

Description

[0001] Technical field: [0002] The invention relates to the technical field of pesticide wastewater treatment, in particular to a primary decolorizer for high-chroma chemical wastewater treatment. [0003] Background technique: [0004] Most chemical wastewater contains substances with complex structure, toxic and harmful, and difficult to biodegrade. It has the characteristics of high COD, high salinity, high chromaticity and high toxicity. For high-color chemical wastewater, decolorization treatment must be carried out. At present, common decolorization methods at home and abroad include coagulation decolorization, adsorption decolorization, and ozone oxidation. The conventional coagulation decolorization method cannot effectively achieve the effect of decolorization; the main advantage of adsorption decolorization is that the colored substances are removed from the water by adsorption, and the structure of the colored substances is retained during the adsorption process. ...

Claims

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Application Information

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IPC IPC(8): C02F1/00C02F1/28C02F1/52
CPCC02F1/00C02F1/281C02F1/288C02F1/5263
Inventor 彭庆生呼雪萍
Owner ANHUI SUQI CHEM
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