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Carrier for loading precipitates, preparation method of carrier and method for loading flocculent precipitates

A carrier and flocculation technology, which is applied in the field of loaded sediment carrier, loaded flocculation and sedimentation, can solve the problems of high project cost and occupied area, strong impact, sewage treatment effect and treatment efficiency are difficult to continue to improve, and achieve the effect of convenient use

Active Publication Date: 2022-05-10
臻和慧联(浙江)环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004]Currently commonly used carriers include fine sand, mineral particles, etc. The density and adsorption capacity of such carriers are limited by the characteristics of the material itself, which makes the loading of flocculation and sedimentation process less effective for sewage It is difficult to continue to improve the treatment effect and efficiency; moreover, the currently commonly used loading flocculation sedimentation process needs to set up multiple sedimentation tanks in series, such as mixing tanks, flocculation tanks, floc maturation tanks, floc sedimentation tanks, etc., which makes loading The engineering cost and land occupation of the flocculation-sedimentation process are extremely high, and its use is limited in densely populated areas such as urban areas or areas with small spaces, making it difficult to broaden the application range of the loaded flocculation-sedimentation technology and stagnate for a long time; in addition, the stirring in the sedimentation tank It is easy to have a strong impact on the carrier and flocs during the stirring process, resulting in the decomposition of the flocs and the disintegration of the carrier, reducing the water treatment effect and the number of times the carrier is recycled

Method used

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  • Carrier for loading precipitates, preparation method of carrier and method for loading flocculent precipitates
  • Carrier for loading precipitates, preparation method of carrier and method for loading flocculent precipitates
  • Carrier for loading precipitates, preparation method of carrier and method for loading flocculent precipitates

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preparation example Construction

[0056] In addition, if figure 2 As shown, the present application also provides a method for preparing a precipitate-loaded carrier, the preparation method is used to prepare the above-mentioned precipitate-loaded carrier, and the preparation method includes the steps of:

[0057] S1, compressing the prefabricated granule b1 with waste gas recovery powder;

[0058] S2, using the auxiliary agent b2 to bond a plurality of the prefabricated particles b1 together to form the inner core b;

[0059] S3, coating the adsorption layer a on the outer surface of the inner core b.

[0060] Specifically, the step S1 includes:

[0061] S11, waste gas recovery powder pretreatment: use the powder recovered from waste gas as raw material, dry it to constant weight, grind it to an average particle size ≤ 1um, and set aside;

[0062] S12, pressing compacts: placing the ground exhaust gas recovery powder in a mold, and pressing them into compacts with a relative density ≥ 80%;

[0063] S13, ...

Embodiment 1

[0171] A method for preparing a precipitating carrier, the preparation method comprising the steps of:

[0172] S1, use waste gas recovery powder to press prefabricated particles: use the powder recovered from the waste gas of a steel smelting plant as raw material, dry it to constant weight, grind it to an average particle size of ≤1um, put it in a mold, and press it to a relative density of 80% briquette; put the pressed briquette in a pulverizer and crush it into granules, then sieve through a 500-mesh sieve, collect the undersize material for high-temperature sintering, and continue to pulverize the oversize material; high-temperature sintering in the sintering furnace After sintering at 500°C for 2 hours, prefabricated particles were obtained;

[0173] S2, using additives to bond multiple prefabricated granules together to form the inner core: weigh a certain amount of additives according to 10% of the mass of the prefabricated granules, mix the additives and prefabricated ...

Embodiment 2

[0176] A method for preparing a precipitating carrier, the preparation method comprising the steps of:

[0177] S1, use waste gas recovery powder to press prefabricated particles: use the powder recovered from the waste gas of a steel smelting plant as raw material, dry it to constant weight, grind it to an average particle size of ≤1um, put it in a mold, and press it to a relative density of 90% of the briquette; put the compacted briquette in a pulverizer and crush it into granules, and then sieve it through a 500-mesh sieve, collect the undersize for high-temperature sintering, and continue to pulverize the oversize; high-temperature sintering in the sintering furnace After sintering at 600°C for 1 hour, prefabricated particles were obtained;

[0178] S2, using additives to bond multiple prefabricated granules together to form the inner core: weigh a certain amount of additives according to 30% of the mass of the prefabricated granules, mix the additives and prefabricated g...

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Abstract

The invention provides a carrier for loading precipitates, a preparation method of the carrier and a method for loading flocculent precipitates. The carrier comprises an inner core and an outer core, the adsorption layer coats the periphery of the inner core, and the adsorption layer is made of a porous adsorption material; the inner core comprises a plurality of prefabricated particles which are particulate matters composed of waste gas recovery powder; and the auxiliary agent is filled in gaps among the plurality of prefabricated particles, the plurality of prefabricated particles are bonded together to form the inner core, and the carrier for loading the precipitates, the preparation method of the carrier and the method for loading the flocculent precipitates have the advantages of economy and high efficiency.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a carrier for loading sedimentation, a preparation method of the carrier and a loading flocculation sedimentation method. Background technique [0002] Loading flocculation sedimentation is a method of adding high-density or magnetic insoluble particle carriers such as fine sand, mineral particles, and magnetic seeds to sewage, and using the adsorption capacity of the carrier, the gravity settling ability of the carrier or the magnetic effect to accelerate the formation and precipitation of flocs. It can not only reduce the turbidity, chromaticity and other perception indicators of raw water, but also remove various toxic and harmful substances in the water. At present, the loading flocculation sedimentation technology has been widely used in the water treatment industry. [0003] When selecting the carrier for loading precipitation, on the one hand, the carrier is required to hav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52B01J20/28B01J20/30B01J20/32
CPCC02F1/5281B01J20/28019B01J20/3028B01J20/3214B01J20/32C02F2001/007
Inventor 韩彦涛陈力辉
Owner 臻和慧联(浙江)环境科技有限公司
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