CN104759151A - Magnetic composite filter material prepared by blending melt-blown polypropylene with modified volcanic rock 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 magnetic composite filter material prepared by blending melt-blown polypropylene with modified volcanic rock and used for sewage treatment and a preparation method thereof. The filter material is prepared from following raw materials, by weight: 6-8 parts of polyethylene terephthalate copolymer, 0.8-1 part of ferroferric oxide nano sphere, 2-3 parts of cotton pulp fiber, 10-15 parts of carbonized crop straw powder in 300-400 meshes, 28-35 parts of polypropylene, 20-24 parts of volcanic rock micro powder in 200-300 meshes, 2-3 parts of rosin, 1-1.2 parts of a silane coupling agent KH-550, 0.01-0.02 parts of citric acid, 1-1.2 parts of sodium lignin sulfonate, 2-3 parts of expanded graphite powder and 30-40 parts of water. In the invention, the modified conventional filter material composite body is supported onto the modified polypropylene master batch melt-blown fiber thin filaments doped with a magnetic powder so that the filter material is excellent in adsorption effect on heavy metal ions. The filter material is not liable to corrode and break and is high in repeating utilization rate.

Description

Magnetic coupling filtrate of a kind of sewage disposal fusion-jetting polypropylene mixing modification volcanic rock and preparation method thereof

Technical field

The present invention relates to a kind of sewage disposal filtrate, be specifically related to magnetic coupling filtrate of a kind of sewage disposal fusion-jetting polypropylene mixing modification volcanic rock 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 magnetic coupling filtrate for sewage disposal fusion-jetting polypropylene mixing modification volcanic rock, is characterized in that: described composite filtering material is made up of the raw material of following weight portion: polyethylene terephthalate copolymer 6-8, nanometer spherical ferriferrous oxide nano sphere 0.8-1, cotton pulp fiber 2-3,300-400 order charing crop powder of straw 10-15, polypropylene 28-35,200-300 order volcanic rock micro mist 20-24, rosin 2-3, silane resin acceptor kh-550 1-1.2, citric acid 0.01-0.02, sodium lignin sulfonate 1-1.2, expanded graphite powder 2-3, water 30-40;

The preparation method of the magnetic coupling filtrate of described a kind of sewage disposal fusion-jetting polypropylene mixing modification volcanic rock comprises following steps:

(1) first citric acid, sodium lignin sulfonate are dropped in water, be stirred to after material dissolves completely, volcanic rock micro mist is dropped in solution, stir after soaking 2-3h, add charing crop powder of straw more subsequently, 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, polyethylene terephthalate copolymer, nanometer spherical ferriferrous oxide nano sphere, cotton pulp fiber, expanded graphite powder, stir in rear input double screw extruder and melt extrude granulation at 180-190 DEG C of temperature, obtain modified polypropylene agglomerate;

(3) step (1) gained material is mixed with modified polypropylene agglomerate and other residual components, 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 the acid solution containing surfactant to traditional volcanic rock filtrate, charing crop powder of straw carries out modification, effectively raise the surface-active of filtrate, improve adsorption capacity, and these modified filtrate complexs are carried in the fiber filaments of the melt-blown preparation of modified polypropylene agglomerate of doped magnetic powder, collect the material obtained after being shaped and there is complicated dimensional network structure, the filtrate of this structure lengthened the adsorption treatment time of dirt, adsorption efficiency is higher, heavy metal ion has excellent adsorption effect, simultaneously morphologically more flexible, according to environment for use and the product preparing variform and size can be required, its mechanical property also improves, not easily corrosion failure in use procedure, recycling rate of waterused is high.

Detailed description of the invention

Embodiment

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

A magnetic coupling filtrate for sewage disposal fusion-jetting polypropylene mixing modification volcanic rock, is characterized in that: described composite filtering material is made up of the raw material of following weight portion: polyethylene terephthalate copolymer 8, nanometer spherical ferriferrous oxide nano sphere 0.8, cotton pulp fiber 2.5,400 order charing crop powder of straw 12, polypropylene 30,300 order volcanic rock micro mist 23, rosin 2.5, silane resin acceptor kh-550 1, citric acid 0.01, sodium lignin sulfonate 1, expanded graphite powder 2.5, water 40;

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

(1) first citric acid, sodium lignin sulfonate are dropped in water, be stirred to after material dissolves completely, volcanic rock micro mist is dropped in solution, stir after soaking 3h, add charing crop powder of straw more subsequently, high-speed stirred mixing 45min, subsequently 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, polyethylene terephthalate copolymer, nanometer spherical ferriferrous oxide nano sphere, cotton pulp fiber, expanded graphite powder, stir in rear input double screw extruder and melt extrude granulation at 185 DEG C of temperature, obtain modified polypropylene agglomerate;

(3) step (1) gained material is mixed with modified polypropylene agglomerate and other residual components, drop in melt-blown non-woven former after stirring, melt is the meltblown beam spinneret orifice ejection of 210 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 225g/m ²porosity is 80%, elongation at break is 308%, and fracture strength is 15.6MPa, and bending modulus is 30.2MPa, wear rate≤0.5%, product reaches 90%, COD removal rate to ammonia nitrogen in sewage removal rate and reaches 92%, and heavy metal removal rate reaches 95%, turbidity removal rate reaches 85%, and filter cycle, comparatively conventional material on average improved 70%.

Claims (2)

1. a sewage disposal magnetic coupling filtrate for fusion-jetting polypropylene mixing modification volcanic rock, is characterized in that: described composite filtering material is made up of the raw material of following weight portion: polyethylene terephthalate copolymer 6-8, nanometer spherical ferriferrous oxide nano sphere 0.8-1, cotton pulp fiber 2-3,300-400 order charing crop powder of straw 10-15, polypropylene 28-35,200-300 order volcanic rock micro mist 20-24, rosin 2-3, silane resin acceptor kh-550 1-1.2, citric acid 0.01-0.02, sodium lignin sulfonate 1-1.2, expanded graphite powder 2-3, water 30-40.

2. the preparation method of the magnetic coupling filtrate of a kind of sewage disposal fusion-jetting polypropylene mixing modification volcanic rock as claimed in claim 1, is characterized in that, comprise following steps:

(1) first citric acid, sodium lignin sulfonate are dropped in water, be stirred to after material dissolves completely, volcanic rock micro mist is dropped in solution, stir after soaking 2-3h, add charing crop powder of straw more subsequently, 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, polyethylene terephthalate copolymer, nanometer spherical ferriferrous oxide nano sphere, cotton pulp fiber, expanded graphite powder, stir in rear input double screw extruder and melt extrude granulation at 180-190 DEG C of temperature, obtain modified polypropylene agglomerate;

(3) step (1) gained material is mixed with modified polypropylene agglomerate and other residual components, 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.