AMD rapid purification treatment agent and preparation method and application thereof

A purification treatment and rapid technology, applied in chemical instruments and methods, water/sewage treatment, adsorbed water/sewage treatment, etc., can solve the problems of high price and poor effect of high-concentration pollutants, and achieve low production cost and treatment cost. Low, good removal effect

Pending Publication Date: 2019-04-16
YUNNAN HUAYUN TIANLANG ENVIRONMENTAL PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the adsorption method needs to consider the problem of adsorbents. Conventional adsorbents such as activated carbon and ion exchange resin are expensive, can only treat individual pollutants, and have poor effects on high-concentration pollutants.

Method used

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  • AMD rapid purification treatment agent and preparation method and application thereof
  • AMD rapid purification treatment agent and preparation method and application thereof
  • AMD rapid purification treatment agent and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The self-prepared phosphorus-containing simulated acidic mine wastewater was used for the test, and the adsorbent was steel slag:

[0035] Under the conditions of oscillation frequency of 150r / min, room temperature, reaction time of 10min, and steel slag dosage of 100mL / 2g, the treatment effect of steel slag on different phosphoric acid-containing mine wastewater was studied, and the phosphorus content of the obtained wastewater affected the phosphorus removal rate. Such as figure 1 shown. figure 1 The embedded figure shows that steel slag can remove phosphorus well in the AMD system with a phosphorus content of 2mg / L~12mg / L, and the removal rate is above 90%. figure 1 The outer figure shows that the phosphorus removal rate of steel slag to AMD system with phosphorus content of 12mg / L~20mg / L is above 70%; for AMD system with phosphorus content of 20mg / L~400mg / L, with the increase of phosphorus content The removal rate fluctuates greatly, but the removal rate is greate...

Embodiment 2

[0038] An acid mine wastewater (iron content 435.315mg / L, manganese content 194.833mg / L, pH 2.33) was used for the test, and the adsorbent was steel slag:

[0039]Add 1000.68g of steel slag to 4000mL of an acidic mine wastewater, stir for 6 minutes, let it stand at room temperature for 40 minutes, pour out the supernatant after the time is up, add water samples and repeat the above operation, so that the steel slag can be recycled 5 times (accumulate steel slag at 40 minutes / time) use time), and measure the pH value, iron and manganese after filtering with quantitative filter paper. image 3 It is the adsorption capacity of steel slag to iron and manganese and the change of pH, that is, the adsorption effect diagram of steel slag recycled for 5 times. according to image 3 It is estimated that the adsorption capacity of steel slag to iron is greater than 7.997g / kg, and the adsorption capacity to manganese is about 991.82mg / kg. Considering the removal of iron and manganese an...

Embodiment 3

[0041] Using an acidic mine wastewater (iron content 450.019mg / L, manganese content 238.663mg / L, pH1.96) for the test:

[0042] 1. Prepare AMD rapid purification treatment agent:

[0043] (1) Preparation of slag powder: Steel slag powder is directly ball-milled from converter steelmaking steel slag to a fineness of 80 mesh, and zeolite powder is made of natural zeolite crushed into 90 mesh.

[0044] (2) Drying: Dry steel slag powder, calcium carbide slag, zeolite powder, and bentonite at 60°C until the moisture content is 1.5%.

[0045] (3) Ingredients: The total ingredient amount is 10kg. Weigh the materials according to the weight ratio of 75% steel slag powder, 15% calcium carbide slag, 4% zeolite powder, and 6% bentonite, and place them uniformly in a dry 25mL rubber bucket.

[0046] (4) Stirring: Stir the weighed component raw materials at a constant speed for 10 minutes to fully mix the components.

[0047] 2. Use the prepared AMD rapid purification treatment agent to ...

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Abstract

The invention discloses an AMD rapid purification treatment agent and a preparation method and application thereof. The AMD rapid purification treatment agent comprises the following raw materials inparts by weight: 55-75 parts of steel slag powder, 15-30 parts of carbide slag, 4-8 parts of zeolite powder and 6-11 parts of bentonite. The method comprises the steps of: directly adding the AMD rapid purification treating agent during wastewater treatment, standing for 10-40min after stirring for 5-10min, adding flocculating agent after solid-liquid separation for flocculation precipitation andimpurity removal to reduce the content of suspended matters. The method has the advantages that the purification technology has good removal effect on phosphorus, iron, manganese, arsenic, chromium and fluoride, the pH value of the treated water quality can reach 6-9, and the treated effluent water quality can meet the requirments of 'agricultural irrigation water standard GB 5084-2005' and 'sewage comprehensive discharge standard GB 8978-1996', which can be used for agricultural irrigation, so that waste water can be effectively utilized. In addition, the AMD rapid purification treatment agent and a preparation method and application thereof reasonably utilize metallurgical solid waste and chemical solid waste to achieve the aim of treating waste by waste.

Description

technical field [0001] The invention belongs to the technical field of industrial waste water and environmental sewage waste water treatment, and in particular relates to an AMD rapid purification treatment agent and its preparation method and application. Background technique [0002] Acid mine wastewater (AMD) is a kind of extremely acidic (pH1.2~3.7), rich in SO 4 2- and a variety of heavy (like) metal ions (Fe, Mn, Cr, As, etc.), its effective treatment has become one of the key issues in the comprehensive management of the ecological environment in mining areas. AMD is usually discharged into rivers, lakes and other water bodies near mines, which changes the pH of the water body, inhibits the growth of certain microorganisms in the water body, and hinders the purification of the water body. The interaction between acidic water and minerals in the water body will produce certain salts, which will have adverse effects on the growth of freshwater organisms and plants, re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/16C02F1/28B01J20/30C02F9/04C02F101/10C02F101/14C02F101/20C02F101/22
CPCB01J20/02B01J20/12B01J20/16C02F1/281C02F1/5245C02F1/56C02F2101/103C02F2101/14C02F2101/203C02F2101/206C02F2101/22
Inventor 杨鑫博李志芹范骏蒋俊姜永华牛海荣
Owner YUNNAN HUAYUN TIANLANG ENVIRONMENTAL PROTECTION
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