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A kind of floating flocculant and preparation method thereof

A flocculant and composite flocculant technology, applied in chemical instruments and methods, flocculation/sedimentation water/sewage treatment, water treatment parameter control, etc., can solve the problems of secondary pollution, unfavorable follow-up treatment, etc., and achieve good floating effect Effect

Active Publication Date: 2020-11-03
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For landscape water bodies, the use of flocculation-sedimentation method is not conducive to subsequent treatment, and sediment accumulation at the bottom of the water body is easy to cause secondary pollution through endogenous release

Method used

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  • A kind of floating flocculant and preparation method thereof
  • A kind of floating flocculant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: Preparation of floating polyaluminum chloride (PAC) flocculant:

[0026] Simply mix 0.05g of polyaluminum chloride with 0.050g, 0.750g, 0.100g, 0.125g, and 0.150g of sodium percarbonate, and stir evenly to prepare a floating polyaluminum chloride flocculant.

Embodiment 2

[0027] Embodiment 2: the preparation of floating type polyferric chloride (PFC) flocculant:

[0028] Then 0.05g of polyferric chloride solid is mixed with 0.050g, 0.750g, 0.100g, 0.125g and 0.150g of sodium percarbonate respectively, and stirred evenly to prepare a floating polyferric chloride flocculant.

Embodiment 3

[0029] Embodiment 3: Preparation of floating polyaluminum ferric chloride (PAFC) flocculant:

[0030] Preparation of polyaluminum ferric chloride: 2g of FeCl 3 ·6H 2 O and 4.47g AlCl 3 ·6H 2 O into the beaker, add 200ml of distilled water and stir until completely dissolved, slowly add 0.78gNa 2 CO 3 Powder, add 0.04g Na after the foam disappears 2 HPO 4 12H 2 O, continue to stir until completely dissolved. After aging, place it in an oven at 60°C to dry, cool to room temperature, and grind to obtain polyaluminum ferric chloride (PAFC) solid with relatively stable properties.

[0031] Then, 0.05g of the above polyaluminum ferric chloride solid was simply mixed with 0.050g, 0.750g, 0.100g, 0.125g, and 0.150g of sodium percarbonate respectively, and stirred evenly to prepare a floating polyaluminum ferric chloride flocculation agent.

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Abstract

The invention discloses a floating type flocculant. The floating type flocculant is characterized by being prepared from the following raw materials in percentage by mass: 17 to 60 percent of slow release aerofloat reagent and 40 to 83 percent of the flocculant, wherein the flocculant is any one or more of flocculants such as an inorganic flocculant, an organic flocculant and an inorganic-organiccompound flocculant; the slow release aerofloat reagent is one or more of sodium percarbonate, sodium carbonate and oxygenates such as oxygen capsules or an aerogenesis reagent. The floating type flocculant disclosed by the invention has better floatation effect and flocculation effect; a floc is enable to float up, so that pollutants such as suspended matters and phosphorus in the water are completely removed; in addition, small amount of the slow release aerofloat reagent can achieve better floatation effects and the floc continuously floats for a long time.

Description

technical field [0001] The invention belongs to the field of polymer flocculants for water treatment, and in particular relates to a floating flocculant and a preparation method thereof. Background technique [0002] At present, flocculation is one of the main water treatment methods. Flocculant and its application are the core of this technology, and its type and property directly determine the effect of coagulation treatment. When traditional flocculants use sedimentation to remove suspended solids and phosphorus in water, the phosphorus adsorbed on the flocs will desorb into the water again as time goes by. [0003] For landscape water bodies, the use of flocculation-sedimentation method is not conducive to subsequent treatment, and sediments accumulated at the bottom of the water body are easy to cause secondary pollution through endogenous release. Contents of the invention [0004] In view of the above problems, the purpose of the present invention is to provide a f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/52C02F1/56C02F1/24
CPCC02F1/24C02F1/52C02F1/5245C02F1/56C02F2101/105C02F2209/10C02F2209/22
Inventor 梁志伟张哲研马媛媛陈盈楠
Owner ZHEJIANG UNIV
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