CN103723807A - Preparation method of flocculating agent for dyeing wastewater treatment - Google Patents

Abstract

The invention discloses a preparation method of a flocculating agent for dyeing wastewater treatment. The preparation method comprises the following steps: 1) respectively grinding 7-8 weight parts of dolomite, 4-6 weight parts of ringwoodite and 2-4 weight parts of magnesium carbonate, enabling the grinded dolomite, ringwoodite and magnesium carbonate to pass a 370-380 mesh sieve, and calcining for activization for 5-6 hours at the temperature of 840-850 DEG C; 2) respectively grinding 170-180 weight parts of red mud produced by the Bayer process and 120-130 weight parts of red mud produced by the mixed combination process, allowing the two grinded red mud to pass a 400-450 mesh sieve, and calcining for activization for 2.5-3.5 hours at the temperature of 850-860 DEG C; 3) putting the activated dolomite, dolomite, ringwoodite, magnesium carbonate, red mud produced by the Bayer process and the red mud produced by the mixed combination process into a reaction kettle, adding 360-370 weight parts of hydrochloric acid with the concentration of 46%, sealing the reaction kettle, keeping the temperature at 260-270DEG C, keeping the pressure at 2-3 Mpa, and reacting for 14-15 hours; 4) adding 70-80 weight parts of calcium aluminate cement powder into the reaction kettle, mixing, and reacting for 2.5-3.5 hours to prepare the flocculating agent. The flocculating agent provided by the invention solves the problem that a traditional flocculating agent for the dyeing wastewater treatment is poor in decoloration effect.

Description

The preparation method of flocculation agent for treatment of dyeing wastewater

Technical field

The present invention relates to the preparation method of flocculation agent for treatment of dyeing wastewater.

Background technology

Dyeing waste water complicated component, organic pollutant content is high, biodegradability is poor, colourity is dark, COD and BOD is high, change of water quality is large, belongs to difficult degradation, difficult.The problems such as existing coagulating treatment method treatment of dyeing and printing is mainly to using single molysite, aluminium salt as chemical floc, exists dosage large, and cost is high, and floc particle is loose, and settling property is poor.

Summary of the invention

The object of the present invention is to provide the preparation method of flocculation agent for a kind for the treatment of of dyeing wastewater, it solves the poor problem of decolorizing effect that treatment of dyeing wastewater flocculation agent exists.

For achieving the above object, technical scheme of the present invention is the preparation method of flocculation agent for a kind for the treatment of of dyeing wastewater of design, comprises the steps:

1) 7-8 mass parts rhombspar, the brilliant peridotites of 4-6 mass parts point, 2-4 mass parts magnesiumcarbonate were ground respectively to 370-380 mesh sieve, at 840-850 ℃ of calcination activation 5-6 hour;

2) 170-180 mass parts Bayer process red mud, 120-130 mass parts mixed combining method red mud were ground respectively to 400-450 mesh sieve, at 850-860 ℃ of calcination activation 2.5-3.5 hour;

2) again the rhombspar of activation, sharp brilliant peridotites, magnesiumcarbonate, Bayer process red mud, mixed combining method red mud are dropped in reactor, the hydrochloric acid that adds 360-370 mass parts concentration 46%, by reactor sealing, insulation 260-270 ℃, pressurize 2-3 MPa, reaction 14-15 hour;

3) in reactor, add 70-80 mass parts calcium aluminate powder again, after mixing, reaction 2.5-3.5 hour, makes flocculation agent.

Advantage of the present invention and beneficial effect are: the preparation method of a kind for the treatment of of dyeing wastewater with flocculation agent is provided, and it solves the poor problem of decolorizing effect that treatment of dyeing wastewater flocculation agent exists.

Embodiment

Below in conjunction with embodiment, the specific embodiment of the present invention is further described.Following examples are only for technical scheme of the present invention is more clearly described, and can not limit the scope of the invention with this.

The concrete technical scheme of implementing of the present invention is:

Embodiment 1

A preparation method for flocculation agent for treatment of dyeing wastewater, comprises the steps:

1) 7 mass parts rhombspars, the brilliant peridotites of 4 mass parts point, 2 mass parts magnesiumcarbonate were ground respectively to 370 mesh sieves, 840 ℃ of calcination activations 5 hours;

2) 170 mass parts Bayer process red muds, 120 mass parts mixed combining method red muds were ground respectively to 400 mesh sieves, 850 ℃ of calcination activations 2.5 hours;

2) rhombspar of activation, sharp brilliant peridotites, magnesiumcarbonate, Bayer process red mud, mixed combining method red mud are dropped in reactor again, add the hydrochloric acid of 360 mass parts concentration 46%, by reactor sealing, be incubated 260 ℃, pressurize 2 MPas, react 14 hours;

3) in reactor, add 70 mass parts calcium aluminate powder again, after mixing, reaction is 2.5 hours, makes flocculation agent.

Embodiment 2

A preparation method for flocculation agent for treatment of dyeing wastewater, comprises the steps:

1) 8 mass parts rhombspars, the brilliant peridotites of 6 mass parts point, 4 mass parts magnesiumcarbonate were ground respectively to 380 mesh sieves, 850 ℃ of calcination activations 6 hours;

2) 180 mass parts Bayer process red muds, 130 mass parts mixed combining method red muds were ground respectively to 450 mesh sieves, 860 ℃ of calcination activations 3.5 hours;

2) rhombspar of activation, sharp brilliant peridotites, magnesiumcarbonate, Bayer process red mud, mixed combining method red mud are dropped in reactor again, add the hydrochloric acid of 360-370 mass parts concentration 46%, by reactor sealing, be incubated 270 ℃, pressurize 3 MPas, react 15 hours;

3) in reactor, add 80 mass parts calcium aluminate powder again, after mixing, reaction is 3.5 hours, makes flocculation agent.

Embodiment 3

A preparation method for flocculation agent for treatment of dyeing wastewater, comprises the steps:

1) 7.8 mass parts rhombspars, the brilliant peridotites of 4.6 mass parts point, 2.4 mass parts magnesiumcarbonate were ground respectively to 375 mesh sieves, 845 ℃ of calcination activations 5.5 hours;

2) 175 mass parts Bayer process red muds, 1250 mass parts mixed combining method red muds were ground respectively to 430 mesh sieves, 85. ℃ of calcination activations 3 hours;

2) rhombspar of activation, sharp brilliant peridotites, magnesiumcarbonate, Bayer process red mud, mixed combining method red mud are dropped in reactor again, add the hydrochloric acid of 365 mass parts concentration 46%, by reactor sealing, be incubated 265 ℃, pressurize 2.3 MPas, react 14.5 hours;

3) in reactor, add 75 mass parts calcium aluminate powder again, after mixing, reaction is 3 hours, makes flocculation agent.

The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (1)

1. the preparation method of flocculation agent for treatment of dyeing wastewater, is characterized in that, comprises the steps:

1) 7-8 mass parts rhombspar, the brilliant peridotites of 4-6 mass parts point, 2-4 mass parts magnesiumcarbonate were ground respectively to 370-380 mesh sieve, at 840-850 ℃ of calcination activation 5-6 hour;

2) 170-180 mass parts Bayer process red mud, 120-130 mass parts mixed combining method red mud were ground respectively to 400-450 mesh sieve, at 850-860 ℃ of calcination activation 2.5-3.5 hour;

2) again the rhombspar of activation, sharp brilliant peridotites, magnesiumcarbonate, Bayer process red mud, mixed combining method red mud are dropped in reactor, the hydrochloric acid that adds 360-370 mass parts concentration 46%, by reactor sealing, insulation 260-270 ℃, pressurize 2-3 MPa, reaction 14-15 hour;

3) in reactor, add 70-80 mass parts calcium aluminate powder again, after mixing, reaction 2.5-3.5 hour, makes flocculation agent.