Preparation and application of printing and dyeing sewage treatment agent

A sewage treatment agent, printing and dyeing sewage technology, applied in water/sewage treatment, adsorption water/sewage treatment, oxidized water/sewage treatment, etc., can solve the problems of limited industrial application, high price, poor dispersion, etc., and achieve excellent adsorption capacity , Reduce processing costs, good flocculation effect

Inactive Publication Date: 2018-03-06
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the chitosan-graphene composite material and graphene nanolayer / MnO 2 The compound is expensive and its dispersion is poor, which limits its wide industrial application

Method used

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  • Preparation and application of printing and dyeing sewage treatment agent

Examples

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Comparison scheme
Effect test

Embodiment 1

[0018] A kind of preparation of printing and dyeing sewage treatment agent, comprises the preparation of modified coconut shell activated carbon powder, the preparation of modified bentonite and the preparation of sewage treatment agent, and its preparation specifically comprises the following steps:

[0019] 1) Preparation of modified coconut shell activated carbon powder: crush the coconut shell and pass through a 100-mesh sieve, add the coconut shell powder to the phosphoric acid solution with a mass concentration of 70% according to the material-liquid ratio of 1:2, and soak at 70°C 30h, filter, then calcined and activated at 500°C for 3h, take it out and cool naturally, then wash the sample with deionized water until neutral, dry at 70°C, grind, pass through a 250-mesh sieve, and then according to the ratio of material to liquid: Add 0.7mol / L copper nitrate solution at 1:2, then add 0.3mol / L cerium nitrate solution according to the material-to-liquid ratio of 1:0.8, soak f...

Embodiment 2

[0025] A kind of preparation of printing and dyeing sewage treatment agent, comprises the preparation of modified coconut shell activated carbon powder, the preparation of modified bentonite and the preparation of sewage treatment agent, and its preparation specifically comprises the following steps:

[0026] 1) Preparation of modified coconut shell activated carbon powder: crush the coconut shell and pass through a 50-mesh sieve, add the coconut shell powder to the phosphoric acid solution with a mass concentration of 60% according to the material-liquid ratio of 1:4, and soak at 90°C 20h, filter, then calcined and activated at 700°C for 2h, take it out and cool naturally, then wash the sample with deionized water until neutral, dry at 90°C, grind, pass through a 150-mesh sieve, and then according to the ratio of material to liquid: Add 0.4mol / L copper nitrate solution at 1:4, then add 0.1mol / L cerium nitrate solution according to the material-to-liquid ratio of 1:1.3, soak fo...

Embodiment 3

[0032] A kind of preparation of printing and dyeing sewage treatment agent, comprises the preparation of modified coconut shell activated carbon powder, the preparation of modified bentonite and the preparation of sewage treatment agent, and its preparation specifically comprises the following steps:

[0033] 1) Preparation of modified coconut shell activated carbon powder: crush the coconut shell and pass through an 80-mesh sieve, add the coconut shell powder to the phosphoric acid solution with a mass concentration of 65% according to the material-liquid ratio of 1:3, and soak at 80°C 25h, filter, then calcined and activated at 600°C for 2.5h, take it out and cool naturally, then wash the sample with deionized water until neutral, dry at 80°C, grind, pass through a 200-mesh sieve, and then press the ratio of material to liquid Add 0.5mol / L copper nitrate solution to 1:3, then add 0.2mol / L cerium nitrate solution according to the ratio of material to liquid 1:1, soak for 25h, ...

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Abstract

The invention discloses preparation and application of a printing and dyeing sewage treatment agent. The preparation steps are follows: adding a coconut shell powder into a phosphoric acid solution for soaking, calcinating for activation, and then adding a copper nitrate solution and an yttrium nitrate solution for modification, and calcinating to obtain modified coconut shell activated carbon; adding an organic modifier and aluminum chloride into deionized water, then adding bentonite, reacting, and grinding to obtain modified bentonite; taking modified coconut shell activated carbon powder,polymeric ferric trichloride, polyaluminum chloride, modified bentonite, corn starch, sodium acetate, polyacrylamide, polysorbate, plant fiber and ethylene glycol-bis(beta-aminoethyl ether)-N,N,N',N'-tetraacetic acid, uniformly mixing, and granulating to obtain the sewage treatment agent. The invention has the beneficial effects as follows: by the preparation method, raw materials are compounded to play a coordinated role, and printing and dyeing sewage with relatively high chroma and concentration can be continuously treated, and the treated water can be reused repeatedly; a technology for treating the dyeing and dyeing sewage by using the water treatment agent is simple, efficient, low in treatment cost and free of side effects on operators.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to the preparation and application of a printing and dyeing sewage treatment agent. Background technique [0002] Printing and dyeing wastewater mainly comes from pretreatment, dyeing, printing, finishing and other processes. The pretreatment process includes desizing, scouring, bleaching and mercerizing. The discharged wastewater is collectively referred to as bleaching wastewater. The dyeing, printing and finishing processes discharge dyeing wastewater, printing wastewater and finishing wastewater respectively. The above wastewater is mixed and called printing and dyeing wastewater. The quality of printing and dyeing wastewater is complex, containing dyes, sizing agents, additives, oil agents, acids and bases, fiber impurities, sand substances, inorganic salts, etc. The difficulty of printing and dyeing wastewater treatment mainly focuses on the following two asp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28C02F1/52C02F1/54C02F1/56C02F1/72C02F101/30C02F103/30
CPCC02F1/281C02F1/283C02F1/285C02F1/286C02F1/5236C02F1/54C02F1/56C02F1/725C02F2101/30C02F2103/30
Inventor 孙静亚王鹏韩厚锋
Owner ZHEJIANG OCEAN UNIV
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