Compound flocculant taking natural minerals as main components

A mineral and flocculant technology, which is applied in the field of composite flocculant and its preparation, can solve the problems of limited use and poor water purification effect, and achieve the effects of strong cohesion, low moisture content of sludge, and shortened process residence time

Inactive Publication Date: 2014-12-24
张家领
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The invention provides a composite flocculant with natural minerals as the main component and its preparation meth

Method used

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  • Compound flocculant taking natural minerals as main components
  • Compound flocculant taking natural minerals as main components
  • Compound flocculant taking natural minerals as main components

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Application of composite flocculant mainly composed of natural minerals in electroplating wastewater treatment.

[0045] figure 1 : Electroplating wastewater test results

[0046] figure 2 : Comparison of traditional flocculant and the composite flocculant of the present invention with natural minerals as the main component

[0047] image 3 : beaker experiment

[0048] Project site pictures

[0049] Figure 4 : Raw water of electroplating wastewater

[0050] Figure 5 : Process debugging

[0051] Image 6 : Dry powder dosing machine

[0052] Figure 7 : Alum flower form

[0053] Figure 8 : water after treatment

[0054] In Example 1, 60-85% of natural minerals, 8-38% of traditional inorganic flocculants, 3-10% of organic polymer flocculants, preferably 60-85% of hemihydrate gypsum powder (wherein the content of hemihydrate gypsum is greater than or equal to 75% %, dihydrate gypsum is less than 5%, soluble anhydrite content is less than 5%), aluminum su...

Embodiment 2

[0056] Application of composite flocculant mainly composed of natural minerals in the treatment of printing and dyeing wastewater.

[0057] Figure 9 : Comparison before and after decolorization of cationic dye wastewater

[0058] Figure 10 : Contrast before and after decolorization treatment of reactive dye wastewater

[0059] Figure 11 : sludge form

[0060] In Example 2, 60-85% of natural minerals, 8-38% of traditional inorganic flocculants, and 3-10% of organic polymer flocculants. Preferably slaked lime 60-85%, magnesium sulfate (or ferrous sulfate) 8-38%, cationic polyacrylamide 3-10%.

Embodiment 3

[0062]Application of composite flocculant with natural minerals as main components in mine water treatment.

[0063] Figure 12 : mine water raw water

[0064] Figure 13 : Project installation and commissioning

[0065] Figure 14 : Alum flower form

[0066] Figure 15 : Raw water and treated effluent

[0067] Figure 16 : Mine water raw water test sheet

[0068] Figure 17 : Water test sheet after mine water treatment

[0069] In Example 3, 60-85% of natural minerals, 8-38% of traditional inorganic flocculants, and 3-10% of organic polymer flocculants. Preferable hemihydrate gypsum powder 60-85%, PAC (drum type) 8-38%, anionic polyacrylamide 3-10%.

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Abstract

The invention discloses a compound flocculant taking natural minerals as main components. The compound flocculant is mainly prepared from the following components by weight percent: 60%-85% of natural minerals, 8%-38% traditional inorganic flocculant and 3%-10% of organic polymer flocculant. According to the invention, key points are as follows: in the compound flocculant taking natural minerals as main components, the weight of the natural minerals, the inorganic flocculant and the organic polymer flocculant is dry weight; and the compound flocculant is implemented to purification of civil engineering wastewater, natural water, industrial wastewater, oily wastewater, fluoride wastewater, food processing wastewater, auto parts processing wastewater, colored wastewater, clean wastewater, semiconductor processing wastewater, restaurant waste water, mine water, slaughter wastewater, grinding wastewater, sewage effluent and the like.

Description

technical field [0001] The invention relates to a composite flocculant mainly composed of natural minerals and a preparation method thereof, which can be used for purifying natural water, domestic sewage and industrial waste water. More specifically, no matter organic or inorganic, dissolved or suspended in water, it can be removed, such as: heavy metal ions, BOD, COD, grease, dyes in water, etc. Background technique [0002] Traditionally, the pollutants of natural water, domestic sewage and industrial wastewater are coagulated by adding flocculants, and the sludge is dehydrated by centrifuges and filter presses, and then the dehydrated sludge is solidified and treated. [0003] The flocculants used for the coagulation of suspended solids include inorganic flocculants aluminum sulfate, PAC, polyferric sulfate, ferrous sulfate, ferric chloride, etc.; organic polymer flocculants anionic polyacrylamide, cationic polyacrylamide and some modified polyacrylamide Acrylamide. For...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/56
CPCY02A20/402
Inventor 张家领
Owner 张家领
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