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A kind of preparation method of composite adsorption filter material

A composite adsorption and filter material technology, applied in chemical instruments and methods, adsorption water/sewage treatment, silicon compounds, etc., can solve the problems of small porosity, large head loss, and low biomass, and achieve significant removal effect and strong Adsorption capacity, fast sedimentation effect

Active Publication Date: 2014-10-08
JSTI GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As a commonly used inorganic filter material, quartz sand has high density, small specific surface area, and small porosity. When sewage flows through the filter layer, the resistance is large and the biomass is small. Therefore, the treatment load of the filter is not high, and the head loss is large. The filter material of the biological filter has certain limitations; the compatibility between the organic polymer filter material and microorganisms is poor, so the biomass is less when the membrane is formed, it is easy to fall off, the treatment effect is not ideal and the price is expensive

Method used

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  • A kind of preparation method of composite adsorption filter material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) The steel waste slag transported from the steel mill is crushed and sieved by the small ore sample crusher (BOYD) ball mill of New Zealand Rocklabs, and passed through a 200-mesh sieve;

[0028] (2) Dry the steel waste slag sample in an electric blast drying oven for 20 hours at a drying temperature of 100°C;

[0029] (3) Mix 350g of iron and steel waste slag dried to constant weight, 350g of recycled powder, 30g of lime, 90g of cement, and 180g of water;

[0030] (4) After the samples are fully mixed and stirred to form a dough, take a small amount each time and knead them into small balls with a particle size of 5mm;

[0031] (5) After kneading all the samples into small balls, cover them with gauze and water them to keep the small balls moist for 4 days.

[0032] The compressive strength of the prepared composite adsorption filter material is 15.7-17.8 Mpa, the specific surface area is 282-289 m2 / kg, and the density is 2.68-2.81g / cm3.

[0033] The prepared comp...

Embodiment 2

[0036] (1) The steel waste slag transported from the steel mill is crushed and sieved by the small ore sample crusher (BOYD) ball mill of New Zealand Rocklabs, and passed through a 100-mesh sieve;

[0037] (2) Dry the steel waste slag sample in an electric blast drying oven for 25 hours at a drying temperature of 105°C;

[0038] (3) Weigh 300g of iron and steel waste slag that has been dried to constant weight, 400g of recycled powder, 50g of lime, 80g of cement, and 170g of water, and mix them evenly;

[0039] (4) After the samples are fully mixed and stirred to form a dough, take a small amount each time and knead them into small balls with a particle size of 4mm;

[0040] (5) After kneading all the samples into small balls, cover them with gauze and water them to keep the small balls moist for 3 days.

Embodiment 3

[0042] (1) The steel waste slag transported from the steel mill is crushed and sieved by the small ore sample crusher (BOYD) ball mill of New Zealand Rocklabs, and passed through a 50-mesh sieve;

[0043] (2) Dry the steel waste slag sample in an electric drying oven for 30 hours at a drying temperature of 110°C;

[0044] (3) Weigh 400g of iron and steel waste slag that has been dried to constant weight, 300g of recycled powder, 40g of lime, 85g of cement, and 175g of water, and mix them evenly;

[0045] (4) After the samples are fully mixed and stirred to form a dough, take a small amount each time and knead them into small balls with a particle size of 3mm;

[0046] (5) After kneading all the samples into small balls, cover them with gauze and water them to keep the small balls moist for 2 days.

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Abstract

The invention relates to a preparation method of a composite adsorption filter material. The iron and steel waste slag is crushed, sieved, and dried; add recycled powder, lime, cement, and water in sequence, and mix according to the proportion; then, after the sample is fully mixed and stirred to form a dough, take a small amount and knead it into small balls; cover the small balls with Water on the gauze to keep the pellets moist, and maintain to obtain a non-burning adsorption filter material. The adsorption filter material of the present invention is free from calcination, has good adsorption effect on nutrients such as phosphorus, has good pressure resistance, has a wide range of raw materials for preparation, does not need high-temperature activation and sintering, has low raw material cost, simple process, and low requirements for equipment. , especially suitable for the treatment of sewage in expressway toll areas.

Description

technical field [0001] The invention relates to a production technology of a biological filter material in a water treatment process, in particular to a preparation method of a composite adsorption filter material. Background technique [0002] The filter material is the most important part of the biological aerated filter, and the selection of different filter materials will have a greater impact on the treatment effect of the biological aerated filter. Under normal growth conditions, the surface of microorganisms has a negative charge. If the surface of the filter material is positively charged, this will make the process of microorganisms attaching and immobilizing on the surface of the filter material easier. The roughness of the surface of the filter material is conducive to the attachment and fixation of bacteria on the surface. The rough surface increases the effective contact area between the bacteria and the filter material, and the holes and cracks formed by the sp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/10B01J20/30C02F1/28C02F1/58C02F1/62
Inventor 彭志诚
Owner JSTI GRP CO LTD