CN104759159A - Composite sterilization filter material prepared by blending melt-blown polypropylene with modified alginate fiber and used for sewage treatment and preparation method thereof - Google Patents

Abstract

The invention relates to a filter material used in sewage treatment and particularly relates to a composite sterilization filter material prepared by blending melt-blown polypropylene with modified alginate fiber and used for sewage treatment and preparation method thereof. The filter material is prepared from following raw materials, by weight: 30-35 parts of polypropylene, 2-3 parts of rosin, 1-2 parts of silane coupling agent KH-550, 2-3 parts of poly(N-isopropylacrylamide), 4-5 parts of magnesium silicate, 1-2 parts of nano silver-loaded activated carbon, 10-12 parts of the alginate fiber, 16-18 parts of attapulgite in 200-300 meshes, 0.2-0.3 parts of malonic acid, 30-40 parts of water, 1-1.2 parts of dodecyl sodium sulfate, and 12-16 parts of silica sol being 10-15% in solid content. In the invention, the modified composite filter material is supported onto the modified polypropylene master batch melt-blown fiber thin filaments to prepare the filter material having a stereoscopic network structure. The filter material is higher in removal rate of dirt, has anti-bacterial and sterilizing effects, is high in efficiency and stable and is durable.

Description

Composite bactericidal type filtrate of a kind of sewage disposal fusion-jetting polypropylene mixing modification alginate fibre and preparation method thereof

Technical field

The present invention relates to a kind of sewage disposal filtrate, be specifically related to composite bactericidal type filtrate of a kind of sewage disposal fusion-jetting polypropylene mixing modification alginate fibre and preparation method thereof.

Background technology

Along with socioeconomic development, water pollutions increases the weight of day by day, pollutant component and content are difficult to control more, more and more higher to the requirement of water technology, original conventional treatment material obviously can not meet needed for production, improve the efficiency of water treatment, need to increase water quality from source treatment effect, and the serviceability improving filtrate the most efficient the most direct beyond doubt method, current use comparatively widely filtrate mainly contains quartz sand filter media, ANTHRACITE FILTER MEDIA, volcanic rock filtrate and string class filtrate etc., these filtrates in use each tool are good and bad, on the whole, improve the service efficiency of these filtrates, reduce production cost and be still the problem needing to solve.

Polypropylene melt-blown material is a kind of novel filtering material, mutually tangle between its fiber, structural void is little, spatially network structure, and product flexibility is strong, can make various shape as required, have that filtration resistance is low, filter effect is high, output is high, cost is low, the not advantage such as cracky, existing research shows that it is well worth doing at sewage treatment area, however the shaping filtrate intensity of simple polypropylene melt-blown and durability poor, the adsorption capacity of dirt is had much room for improvement.

Summary of the invention

The object of the invention is to, for the deficiency of current material, organic and inorganic to polypropylene melt blown filter materials and tradition filtrate is combined, maximize favourable factors and minimize unfavourable ones, there is provided a kind of using fusion-jetting polypropylene as carrier, load has the NEW TYPE OF COMPOSITE filtrate of the organic and inorganic filtrate of high efficiency of additive capability, and this filtrate production cost is low, absorption cuts dirty effective, highly efficient durable, does not produce secondary pollution.

To achieve these goals, the technical solution used in the present invention is as follows:

A composite bactericidal type filtrate for sewage disposal fusion-jetting polypropylene mixing modification alginate fibre, is characterized in that: described composite filtering material is made up of the raw material of following weight portion: polypropylene 30-35, rosin 2-3, silane resin acceptor kh-550 1-2, NIPA 2-3, magnesium silicate 4-5, nano silver-carrying active carbon 1-2, alginate fibre 10-12,200-300 order attapulgite 16-18, malonic acid 0.2-0.3, water 30-40, lauryl sodium sulfate 1-1.2, solid content are the Ludox 12-16 of 10-15%;

The composite bactericidal type filtrate preparation method of described a kind of sewage disposal fusion-jetting polypropylene mixing modification alginate fibre, comprises following steps:

(1) first malonic acid, lauryl sodium sulfate are dropped in water, be stirred to after dissolving completely and attapulgite, alginate fibre are dropped in solution and soak 1.5-2h, add nano silver-carrying active carbon, Ludox more subsequently, and by mixed material high-speed stirred mixing 40-50min, subsequently by gained mixed material heated-air drying, remove moisture completely, be broken into 300-400 order micro mist for subsequent use;

(2) polypropylene is mixed with rosin, NIPA, stir in rear input double screw extruder and melt extrude granulation at 170-180 DEG C of temperature, obtain modified polypropylene agglomerate;

(3) step (1) gained material is mixed with modified polypropylene agglomerate and other leftover materials, drop in melt-blown non-woven former after stirring, melt is the meltblown beam spinneret orifice ejection of 200-220 DEG C through temperature, wherein orifice diameter is 50-100 μm, ejection filament stretch under the high velocity, hot air stream effect of 230-250 DEG C laggard enter receiving system, filament to be composite assembles shaping on the reception device, completely cooling after and get final product.

Beneficial effect of the present invention:

The present invention utilizes containing malonic acid, the aqueous solution of the compositions such as surfactant is to attapulgite, alginate fibre carries out immersion modification, simultaneously at area load nano silver-carrying active carbon, powder surface activity after process gets a promotion, the material of load makes composite filtering material body have the antibacterial effect of sterilization, the fiber filaments that this species complex is carried on the melt-blown preparation of modified polypropylene agglomerate being collected the material obtained after being shaped has complicated, multichannel dimensional network structure, the filtrate of this structure lengthened the adsorption treatment time of dirt, the removal rate of dirt is higher, simultaneously morphologically more flexible, according to environment for use and the product preparing variform and size can be required, also have good mechanical property concurrently, form stable, durable in use.

Detailed description of the invention

Embodiment

Below with reference to embodiment, the present invention will be further described.

A composite bactericidal type filtrate for sewage disposal fusion-jetting polypropylene mixing modification alginate fibre, is characterized in that: described composite filtering material is made up of the raw material of following weight portion: polypropylene 34, rosin 2, silane resin acceptor kh-550 1.5, NIPA 2.2, magnesium silicate 4, nano silver-carrying active carbon 1.5, alginate fibre 11,300 order attapulgite 17, malonic acid 0.2, water 35, lauryl sodium sulfate 1, solid content are the Ludox 14 of 15%;

The preparation method of above-mentioned composite filtering material comprises following steps:

(1) first malonic acid, lauryl sodium sulfate are dropped in water, be stirred to after dissolving completely and attapulgite, alginate fibre are dropped in solution and soak 1.8h, add nano silver-carrying active carbon, Ludox more subsequently, and by mixed material high-speed stirred mixing 45min, subsequently by gained mixed material heated-air drying, remove moisture completely, be broken into 300 order micro mists for subsequent use;

(2) polypropylene is mixed with rosin, NIPA, stir in rear input double screw extruder and melt extrude granulation at 180 DEG C of temperature, obtain modified polypropylene agglomerate;

(3) step (1) gained material is mixed with modified polypropylene agglomerate and other leftover materials, drop in melt-blown non-woven former after stirring, melt is the meltblown beam spinneret orifice ejection of 220 DEG C through temperature, wherein orifice diameter is 80 μm, ejection filament stretch under the high velocity, hot air stream effect of 240 DEG C laggard enter receiving system, filament to be composite assembles shaping on the reception device, completely cooling after and get final product.

The composite filtering material grammes per square metre prepared is 198g/m ²porosity is 80.5%, and elongation at break is 285%, and fracture strength is 13.6MPa, bending modulus is 27.8MPa, wear rate≤0.5%, product reaches 94%, COD removal rate to ammonia nitrogen in sewage removal rate and reaches 95%, heavy metal removal rate reaches 92%, turbidity removal rate reaches 82%, and bacterial inactivation rate improves 68%, and filter cycle, comparatively conventional material on average improved 72%.

Claims (2)

1. a sewage disposal composite bactericidal type filtrate for fusion-jetting polypropylene mixing modification alginate fibre, is characterized in that: described composite filtering material is made up of the raw material of following weight portion: polypropylene 30-35, rosin 2-3, silane resin acceptor kh-550 1-2, NIPA 2-3, magnesium silicate 4-5, nano silver-carrying active carbon 1-2, alginate fibre 10-12,200-300 order attapulgite 16-18, malonic acid 0.2-0.3, water 30-40, lauryl sodium sulfate 1-1.2, solid content are the Ludox 12-16 of 10-15%.

2. the preparation method of the composite bactericidal type filtrate of a kind of sewage disposal fusion-jetting polypropylene mixing modification alginate fibre as claimed in claim 1, is characterized in that, comprise following steps:

(1) first malonic acid, lauryl sodium sulfate are dropped in water, be stirred to after dissolving completely and attapulgite, alginate fibre are dropped in solution and soak 1.5-2h, add nano silver-carrying active carbon, Ludox more subsequently, and by mixed material high-speed stirred mixing 40-50min, subsequently by gained mixed material heated-air drying, remove moisture completely, be broken into 300-400 order micro mist for subsequent use;

(2) polypropylene is mixed with rosin, NIPA, stir in rear input double screw extruder and melt extrude granulation at 170-180 DEG C of temperature, obtain modified polypropylene agglomerate;

(3) step (1) gained material is mixed with modified polypropylene agglomerate and other leftover materials, drop in melt-blown non-woven former after stirring, melt is the meltblown beam spinneret orifice ejection of 200-220 DEG C through temperature, wherein orifice diameter is 50-100 μm, ejection filament stretch under the high velocity, hot air stream effect of 230-250 DEG C laggard enter receiving system, filament to be composite assembles shaping on the reception device, completely cooling after and get final product.