CN104759158A - Wash-resistant composite filter material prepared by blending melt-blown polypropylene with modified volcanic ash 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 wash-resistant composite filter material prepared by blending melt-blown polypropylene with modified volcanic ash and used for sewage treatment and preparation method thereof. The filter material is prepared from following raw materials, by weight: 1-2 parts of liquid paraffin, 30-35 parts of polypropylene, 1-1.5 parts of rosin, 1-2 parts of silane coupling agent KH-550, 10-14 parts of activated aluminum oxide, 4-6 parts of nano kieselguhr, 2-3 parts of active calcium phosphate, 0.2-0.3 parts of hydrophilic silicone oil, 20-25 parts of volcanic ash fine powder in 200-300 meshes, 1-3 parts of nano zinc oxide, 0.01-0.02 parts of nano cerium oxide, 1-1.2 parts of dodecyl sodium sulfate, 12-15 parts of silica sol being 10-15% in solid content and 30-40 parts of water. 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, is good in toughness, is resistant in wash-off abrasion and is durable.

Description

Pozzuolanic washable composite filtering material of a kind of sewage disposal fusion-jetting polypropylene mixing modification and preparation method thereof

Technical field

The present invention relates to a kind of sewage disposal filtrate, be specifically related to pozzuolanic washable composite filtering material of a kind of sewage disposal fusion-jetting polypropylene mixing modification 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:

The pozzuolanic washable composite filtering material of a kind of sewage disposal fusion-jetting polypropylene mixing modification, is characterized in that: described composite filtering material is made up of the raw material of following weight portion: atoleine 1-2, polypropylene 30-35, rosin 1-1.5, silane resin acceptor kh-550 1-2, activated alumina 10-14, nano diatomite 4-6, active calcium phosphate 2-3, hydrophilic silicone oil 0.2-0.3,200-300 order volcanic ash fine powder 20-25, nano zine oxide 1-3, nano-cerium oxide 0.01-0.02, lauryl sodium sulfate 1-1.2, solid content are Ludox 12-15, the water 30-40 of 10-15%;

The preparation method of the described pozzuolanic washable composite filtering material of a kind of sewage disposal fusion-jetting polypropylene mixing modification, comprises following steps:

(1) first lauryl sodium sulfate, hydrophilic silicone oil are dropped in water, be stirred to after dissolving dispersion completely, volcanic ash fine powder and nano diatomite, nano-cerium oxide are dropped in solution, after soaking 2-3h, high-speed stirred mixes, add Ludox more subsequently, continue to be uniformly mixed 30-40min, finally 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, atoleine, nano zine oxide, 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 hydrophilic silicone oil and surfactant, the aqueous solution of the compositions such as oxide nano rare earth is to nano diatomite, traditional filtrates such as volcanic ash fine powder carry out immersion modification, improve the surface property of powder, widen filth disposal scope, 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 material of this structure lengthened the adsorption treatment time of dirt, higher to the removal rate of dirt, there is pliable and tough mechanical property simultaneously, washability weares and teares, recycling rate of waterused is high, according to environment for use and the product preparing variform and size can also be required.

Detailed description of the invention

Embodiment

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

The pozzuolanic washable composite filtering material of a kind of sewage disposal fusion-jetting polypropylene mixing modification, is characterized in that: described composite filtering material is made up of the raw material of following weight portion: atoleine 1.5, polypropylene 34, rosin 1.2, silane resin acceptor kh-550 1.8, activated alumina 12, nano diatomite 5, active calcium phosphate 2, hydrophilic silicone oil 0.2,300 order volcanic ash fine powder 24, nano zine oxide 2, nano-cerium oxide 0.01, lauryl sodium sulfate 1, solid content are Ludox 14, the water 38 of 15%;

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

(1) first lauryl sodium sulfate, hydrophilic silicone oil are dropped in water, be stirred to after dissolving dispersion completely, volcanic ash fine powder and nano diatomite, nano-cerium oxide are dropped in solution, after soaking 2.5h, high-speed stirred mixes, add Ludox more subsequently, continue to be uniformly mixed 35min, finally by gained mixed material heated-air drying, remove moisture completely, be broken into 400 order micro mists for subsequent use;

(2) polypropylene is mixed with rosin, atoleine, nano zine oxide, 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 230 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 213g/m ²porosity is 78.4%, elongation at break is 312.6%, and fracture strength is 20.2MPa, and bending modulus is 28.4MPa, wear rate≤0.5%, product reaches 92%, COD removal rate to ammonia nitrogen in sewage removal rate and reaches 95%, and heavy metal removal rate reaches 90%, turbidity removal rate reaches 94%, and filter cycle, comparatively conventional material on average improved 64.8%.

Claims (2)

1. the pozzuolanic washable composite filtering material of sewage disposal fusion-jetting polypropylene mixing modification, it is characterized in that: described composite filtering material is made up of the raw material of following weight portion: atoleine 1-2, polypropylene 30-35, rosin 1-1.5, silane resin acceptor kh-550 1-2, activated alumina 10-14, nano diatomite 4-6, active calcium phosphate 2-3, hydrophilic silicone oil 0.2-0.3, 200-300 order volcanic ash fine powder 20-25, nano zine oxide 1-3, nano-cerium oxide 0.01-0.02, lauryl sodium sulfate 1-1.2, solid content is the Ludox 12-15 of 10-15%, water 30-40.

2. the preparation method of the pozzuolanic washable composite filtering material of a kind of sewage disposal fusion-jetting polypropylene mixing modification as claimed in claim 1, is characterized in that, comprise following steps:

(1) first lauryl sodium sulfate, hydrophilic silicone oil are dropped in water, be stirred to after dissolving dispersion completely, volcanic ash fine powder and nano diatomite, nano-cerium oxide are dropped in solution, after soaking 2-3h, high-speed stirred mixes, add Ludox more subsequently, continue to be uniformly mixed 30-40min, finally 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, atoleine, nano zine oxide, 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.