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Adsorption material for treatment of domestic sewage and preparation method and application thereof

An adsorption material and domestic sewage technology, applied in the field of water pollution control, can solve the problems of high content of nitrogen, phosphorus and COD, achieve good adsorption, increase porosity, and good adsorption effect

Active Publication Date: 2019-03-22
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The raw material of the invention is easy to obtain, the preparation process is simple, and the obtained adsorption material has good adsorption effect on nitrogen, phosphorus and COD, and can be used to solve the problem of excessive nitrogen, phosphorus and COD content in domestic sewage; the regeneration of saturated adsorbent is simple , the adsorbent material after failure is a kind of improved biochar, which can be used as fertilizer, which can realize resource utilization of adsorbent material

Method used

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  • Adsorption material for treatment of domestic sewage and preparation method and application thereof

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Effect test

Embodiment 1

[0026] The adsorption material for domestic sewage treatment, the adsorption material includes the following raw materials by volume: 20g of plant stems, 5g of bentonite, and 1g of slag; wherein the plant stems are quinoa stalks, the diameter of the plant stems is more than 4mm, and the plant stems are cut into small sections of 15mm~30mm; the slag is refined slag, which is ground and passed through a 60-mesh sieve.

[0027] The preparation method of the adsorption material for domestic sewage treatment, it comprises the following steps:

[0028] Step 1, naturally drying the plant stems until the water content does not exceed 15wt%, and cutting them into small sections;

[0029] Step 2. Mix the small pieces of plant stems treated in step 1, bentonite, and slag evenly to obtain a mixture, and heat the mixture to 450°C at a heating rate of 3°C / min for carbonization for 36 hours; let it stand for 24 hours, and then pass flow The air is 30ml / min, and the temperature is raised to ...

Embodiment 2

[0034] The adsorption material for domestic sewage treatment, the adsorption material includes the following raw materials by volume: 15g of plant stems, 6g of bentonite, and 1g of slag; wherein the plant stems are mixed rods of Chenopodium stalks and Artemisia stalks with a mass ratio of 1:1, and the plants The diameter of the stem is more than 4mm, and the stem of the plant is cut into small pieces of 15mm~30mm; the slag is any one of coal slag, blast furnace slag, and refining slag, or a mixture of several slags in any proportion, and is ground and passed through a 60-mesh sieve.

[0035] The preparation method of the adsorption material for domestic sewage treatment, it comprises the following steps:

[0036] Step 1, naturally drying the plant stems until the water content does not exceed 15wt%, and cutting them into small sections;

[0037] Step 2. Mix the small pieces of plant stems treated in step 1, bentonite, and slag evenly to obtain a mixture, and heat the mixture t...

Embodiment 3

[0040] The adsorption material for domestic sewage treatment, the adsorption material includes the following raw materials by volume: 20g of plant stems, 5g of bentonite, and 1g of slag; wherein the plant stems are mixed rods of Chenopodium stalks and Artemisia stalks with a mass ratio of 1:1:1 , The diameter of the plant stem is more than 4mm, and the plant stem is cut into small sections of 15mm~30mm; the slag is blast furnace slag, which is ground and passed through a 60-mesh sieve.

[0041] The preparation method of the adsorption material for domestic sewage treatment, it comprises the following steps:

[0042] Step 1, naturally drying the plant stems until the water content does not exceed 15wt%, and cutting them into small sections;

[0043] Step 2. Mix the small pieces of plant stems treated in step 1, bentonite, and slag evenly to obtain a mixture, and heat the mixture to 500°C at a heating rate of 3°C / min for carbonization for 48 hours; let it stand for 24 hours, and...

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Abstract

The invention relates to an adsorption material for treatment of domestic sewage and a preparation method and application thereof, and belongs to the technical field of control of water pollution. Theadsorption material is prepared from the following raw materials in parts by volume: 15 to 20 parts of plant stems, 5 to 6 parts of bentonite, and 1 part of furnace slag. The preparation method comprises the following steps of naturally drying the plant stems until the water content does not exceed 15wt%, and cutting into small sections; uniformly mixing the treated small sections of the plant stems, the bentonite and the furnace slag, heating the mixture to the temperature of 400 to 500 DEG C, and carbonizing for 24 to 48h; standing, leading the air at flow rate of 15 to 45mL / min, and activating for 2 to 3h at the temperature of 600 to 800 DEG C, so as to obtain the activated material; grinding the activated material, and screening by a 60 to 80-mesh sieve, so as to obtain the adsorptionmaterial for the treatment of domestic sewage. The adsorption material has the advantages that the raw materials are easy to obtain, and the preparation technology is simple; the obtained adsorptionmaterial has good adsorption effect on nitrogen, phosphor and COD (chemical oxygen demand), and can be used for solving the problem of overhigh nitrogen, phosphor and COD contents in the domestic sewage.

Description

technical field [0001] The invention relates to an adsorption material for domestic sewage treatment, a preparation method and an application thereof, belonging to the technical field of water pollution control. Background technique [0002] At present, with the substantial improvement of people's living standards, the out-of-synchrony between environmental construction and economic development has become more and more serious, and the problem of water environment pollution is particularly serious. Domestic sewage mainly contains nitrogen, phosphorus and COD, etc. Especially in rural areas, untreated domestic sewage is discharged randomly, causing the water quality of ditches and ponds to turn black and smelly, and mosquitoes breed, affecting the living environment in rural areas and threatening the health of residents. It will cause pollution of drinking water sources and eutrophication of lakes and reservoirs. [0003] my country's current treatment technologies and proce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F3/06C05G3/04C05G3/80
CPCB01J20/02B01J20/12B01J20/20C02F1/281C02F1/283C02F3/06C02F2209/08C05G3/80Y02W10/10
Inventor 黄建洪伏江丽胡学伟田森林李英杰宁平
Owner KUNMING UNIV OF SCI & TECH