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A flocculant for rapidly treating black and odorous water and its preparation method

A technology of black and odorous water and flocculant, which is applied in special treatment targets, water/sewage treatment, chemical instruments and methods, etc., can solve the problems of low treatment efficiency, large dosage, and inability to treat black and odorous water quickly and efficiently. The effect of large adsorption capacity, simple preparation method and good economic and social benefits

Active Publication Date: 2020-08-14
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although using fly ash or zeolite alone to treat black and odorous water can achieve good results, but the amount of use is large and the treatment efficiency is low, which cannot quickly and efficiently treat black and odorous water.

Method used

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  • A flocculant for rapidly treating black and odorous water and its preparation method
  • A flocculant for rapidly treating black and odorous water and its preparation method
  • A flocculant for rapidly treating black and odorous water and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1: Preparation of flocculant and its adsorption performance test

[0036] (1) Grind 55 parts by mass of fly ash and 20 parts by mass of zeolite to below 200 mesh, place them in a reactor with stirring function, add 1mol / L sulfuric acid and react at 75°C for 24 hours, rinse with distilled water , then add 1mol / L sodium hydroxide and react at 90°C and 0.2MPa for 24h, rinse with distilled water, dry to obtain aggregate;

[0037] (2) Crush the corn cob to 2mm, then heat it in an oxygen-limited muffle furnace at 550°C for 4h, then sulfonate it with 98% concentrated sulfuric acid in a PTFE reactor at 150°C for 24h, and then rinse it with distilled water , to obtain sulfonated carbon;

[0038] (3) Bentonite, coal gangue, Hangjin soil and iron-aluminum hydrotalcite are pulverized below 300 orders, and the bentonite of 5 mass parts, the coal gangue of 3 mass parts, the Hangjin soil of 3 mass parts and the hydrotalcite-like hydrotalcite of 1 mass part are mixed with 3 p...

Embodiment 2

[0047] Example 2: Preparation of flocculant and its adsorption performance test

[0048](1) Grind 60 parts by mass of fly ash and 25 parts by mass of zeolite to below 200 mesh, place them in a reactor with stirring function, add 1 mol / L sulfuric acid and react at 75°C for 24 hours, rinse with distilled water , then add 1mol / L sodium hydroxide and react at 90°C and 0.2MPa for 24h, rinse with distilled water, dry to obtain aggregate;

[0049] (2) Crush the corn cob to 2mm, then heat it in an oxygen-limited muffle furnace at 550°C for 4h, then sulfonate it with 98% concentrated sulfuric acid in a PTFE reactor at 150°C for 24h, and then rinse it with distilled water , to obtain sulfonated carbon;

[0050] (3) Bentonite, coal gangue, Hangjin soil and iron-aluminum hydrotalcite are pulverized below 300 orders, and the bentonite of 10 mass parts, the coal gangue of 5 mass parts, the Hangjin soil of 5 mass parts and the hydrotalcite-like hydrotalcite of 3 mass parts are mixed with T...

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Abstract

The invention belongs to the technical field of rapid treatment of a black and odorous water body, and specifically relates to a flocculant for rapidly processing a black and odorous water body and a preparation method thereof. The flocculant is composed of 75 to 85 parts by mass of aggregate and 15 to 25 parts by mass of additive. The aggregate is prepared by mixing modified fly ash and modified zeolite according to a weigh ratio of (55-60): (20-25). The additive is prepared by mixing sulfonated carbon, bentonite, gangue, and hydrotalcite-like compounds according to a weight ratio of (3-5): (5-10): (3-5): (3-5): (1-3). The raw material resources are wide, the raw materials are cheap, the secondary utilization of industrial wastes is realized, and the preparation method is simple. A sectional stirring and mixing method and the flocculant are used to treat a black and odorous water body. The purification efficiency is high. Heavy metals, organic pollutants, nitrogen, and phosphor in the black and odorous water body are effectively eliminated, no secondary pollutant is dissolved out, the processed black and odorous water body meets the standards and is not black and odorous, and good social and economic benefits are generated.

Description

technical field [0001] The invention belongs to the technical field of rapid treatment of black and odorous water bodies, and in particular relates to a flocculant for rapid treatment of black and odorous water bodies and a preparation method thereof. Background technique: [0002] The formation of black and odorous water bodies is mostly due to the random discharge of untreated sewage and the random dumping of some garbage. Most of the black and odorous water bodies present unpleasant colors and / or emit unpleasant odors. With the rapid development of my country's economy and the rapid increase of population, cities continue to expand, while the construction of urban environmental infrastructure lags behind, resulting in serious pollution of urban water bodies, and water bodies appear black and smelly seasonally or all year round. The ecological structure of urban black and odorous water bodies is seriously out of balance, which brings extremely poor sensory experience to re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/52
CPCC02F1/52C02F1/5236C02F2103/007C02F2303/02
Inventor 马伟芳张文俊严玉林
Owner BEIJING FORESTRY UNIVERSITY
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