Preparation method of novel compound wastewater treatment adsorbing agent

A sewage treatment and adsorbent technology, applied in the direction of adsorption water/sewage treatment, chemical instruments and methods, other chemical processes, etc., to achieve the effect of improving the decontamination ability

Active Publication Date: 2014-07-30
浙江东嘉水务有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003]At present, the development and application of attapulgite clay in China, especially the use of its excellent properties to improve the modification is not perfect

Method used

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  • Preparation method of novel compound wastewater treatment adsorbing agent
  • Preparation method of novel compound wastewater treatment adsorbing agent
  • Preparation method of novel compound wastewater treatment adsorbing agent

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preparation example Construction

[0034] The preparation method of nano manganese oxide is specifically:

[0035] At a temperature of 25°C, under the action of ultrasonic waves, slowly drop 40ml of potassium permanganate solution with a concentration of 0.1ml / L into the conical flask filled with 4ml of manganese acetate solution with a concentration of 1.5mol / L, drop Continue to sonicate for 5-10 min after adding. The brown-yellow manganese dioxide suspension obtained by the reaction was centrifuged at 8000 r / min at high speed, the supernatant was discarded, washed with deionized water until neutral, and 43.5 mL of deionized water was added to make MnO 2 Suspension, with a mass concentration of about 20g / L, stored at 0-4°C, for later use, the reaction formula is as follows:

[0036] 2KMnO 4 + 3Mn (Ac) 2 + 2H 2 O→ 5MnO 2 + 2KAc +4HAc.

[0037] Potassium ferrate can sterilize and sterilize, oxidize and remove reducing substances such as ammonia nitrogen, sulfur substances, phenols, etc. in water, and wil...

Embodiment 1

[0051] Embodiment 1 Preparation of dendritic quaternary ammonium salt tetrameric surfactant

[0052] Add 40ml of absolute ethanol and 4.5g of ethylenediamine to a 250ml three-neck flask equipped with a condenser, and magnetically stir at room temperature, add 34.7g of epichlorohydrin at 10 drops / min, and reflux for 4 hours after the addition is complete. Obtain tetrameric surfactant intermediate after decompression distillation, be light yellow translucent viscous liquid, get this intermediate 20g, be the dehydrated alcohol and deionized water mixed solution 40ml of 1:1 with volume ratio as solvent, then Add 7.9g of N,N-dimethyldodecyl tertiary amine dropwise, heat up to 80°C, react for 1h, distill under reduced pressure, recrystallize, and dry in vacuo to obtain a white powdery solid that is dendritic quaternary ammonium salt tetrameric surface active agent.

Embodiment 2

[0053] Attapulgite clay modified by embodiment 2 dendritic quaternary ammonium salt tetrameric surfactant

[0054] Add 100g of attapulgite clay to deionized water, stir for 1 hour, then heat up to 40°C, add 15g of the dendritic quaternary ammonium salt tetrameric surfactant prepared in Example 1, stir for 7 hours, filter, wash, dry and pulverize , to obtain modified attapulgite clay powder.

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Abstract

The invention provides a preparation method of a novel compound wastewater treatment adsorbing agent. The preparation method comprises the following steps: step one, preparing attapulgite clay powder which is subjected to surface modification by adopting a dendritic quaternary ammonium salt tetramerization surface active agent; step two, preparing nanometer manganese oxide suspension liquid ; step three, preparing potassium ferrate; and step four, compounding products prepared in the step one to three so as to prepare the compound wastewater treatment adsorbing agent. The stain removal capacity of the compound wastewater treatment adsorbing agent for industrial wastewater is greatly improved by combined application of respective stain removal characteristics of attapulgite clay, nanometer manganese oxide and potassium ferrate through mutual compensation and synergistic effects of the attapulgite clay, the nanometer manganese oxide and the potassium ferrate.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a preparation method of a novel modified attapulgite clay-nanometer manganese oxide-potassium ferrate composite adsorbent for sewage treatment. Background technique [0002] With the development of the economy, there are more and more chemical plants in various places, and the treatment of industrial wastewater has become a hot spot of concern from all walks of life. At present, the commonly used technologies for industrial wastewater treatment include activated carbon adsorption, zeolite exchange, etc. Activated carbon is difficult to use on a large scale due to its high price and complex regeneration. Natural attapulgite clay is a silicate clay mineral that widely exists in nature. It has a special octahedral structure and high cation exchange and physical adsorption capacity. It has a layer-chain microstructure, elongated fibers, and channels. It has a large surface...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/12B01J20/30C02F1/28
Inventor 宋时衡
Owner 浙江东嘉水务有限公司
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