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Compound mineral material for disposing landfill leachate as well as preparation method and application thereof

A technology for landfill leachate and composite minerals, which is applied in the fields of silicon compounds, metallurgical wastewater treatment, chemical instruments and methods, etc., can solve the problems of low removal efficiency of ammonia nitrogen and total nitrogen, and is not suitable for removing various heavy metals, and achieves high treatment efficiency. , the effect of good selective adsorption of heavy metals and broad market prospects

Active Publication Date: 2015-12-09
CHINA NONFERROUS METAL (GUILIN) GEOLOGY & MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantages of the above two invention patents are: they can effectively remove the chroma, organic matter and hexavalent chromium of landfill leachate. The disadvantages are: the removal efficiency of ammonia nitrogen and total nitrogen is low, and it is not suitable for removing multiple heavy metals at the same time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A composite mineral material for treating landfill leachate, comprising raw materials of the following weight: 25kg of modified staphilite, 35kg of modified clinoptilolite, 10kg of modified bentonite, 3kg of alunite, 8kg of kaolin, 6kg of quartz sand, 8kg of volcanic rock and Water glass 5kg, wherein, the particle diameter of described modified hematite, modified clinoptilolite, modified bentonite, alunite is 20 orders, and the particle diameter of described kaolin, quartz sand and volcanic rock is 80 orders.

[0041] A method for preparing a composite mineral material for treating landfill leachate, comprising the steps of:

[0042] (1) Modification of stilbite:

[0043]Take hematilite, crush it to 20 mesh, mix it with the polyaluminum ferric silicate solution with a mass concentration of 15% according to the mass ratio of 10:1, stir for 3 hours, and dry at 100°C for 3 hours after mixing evenly to obtain the improved Hematite;

[0044] (2) Clinoptilolite modification...

Embodiment 2

[0054] A composite mineral material for treating landfill leachate, comprising raw materials of the following weight: 30kg of modified staphilite, 30kg of modified clinoptilolite, 12kg of modified bentonite, 5kg of alunite, 3kg of kaolin, 12kg of quartz sand, 5kg of volcanic rock and Water glass 3kg, wherein, the particle diameter of described modified staphilite, modified clinoptilolite, modified bentonite, alunite is 20 orders, and the particle diameter of described kaolin, quartz sand and volcanic rock is 80 orders.

[0055] A method for preparing a composite mineral material for treating landfill leachate, comprising the steps of:

[0056] (1) Modification of stilbite:

[0057] Take hematilite, crush it to 20 mesh, mix it with the polyaluminum ferric silicate solution with a mass concentration of 15% according to the mass ratio of 10:1, stir for 3 hours, and dry at 100°C for 3 hours after mixing evenly to obtain the improved Hematite;

[0058] (2) Clinoptilolite modifica...

Embodiment 3

[0068] A composite mineral material for treating landfill leachate, comprising raw materials of the following weight: 35 kg of modified staphilite, 25 kg of modified clinoptilolite, 14 kg of modified bentonite, 6 kg of alunite, 3 kg of kaolin, 12 kg of quartz sand, 3 kg of volcanic rock and Water glass 2kg, wherein, the particle diameter of described modified hematite, modified clinoptilolite, modified bentonite, alunite is 20 orders, and the particle diameter of described kaolin, quartz sand and volcanic rock is 80 orders.

[0069] A method for preparing a composite mineral material for treating landfill leachate, comprising the steps of:

[0070] (1) Modification of stilbite:

[0071] Take hematilite, crush it to 20 mesh, mix it with the polyaluminum ferric silicate solution with a mass concentration of 15% according to the mass ratio of 10:1, stir for 3 hours, and dry at 100°C for 3 hours after mixing evenly to obtain the improved Hematite;

[0072] (2) Clinoptilolite mod...

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Abstract

The invention discloses a compound mineral material for disposing landfill leachate as well as a preparation method and application thereof, belonging to the technical field of sewage disposal. The compound mineral material is prepared from the following materials by weight percent: 25 to 35 percent of modified epidesmine, 25 to 35 percent of modified clinoptilolite, 10 to 15 percent of modified bentonite, 3 to 8 percent of alunite, 3 to 8 percent of kaolin, 6 to 18 percent of quartz sand, 3 to 8 percent of volcanic and 2 to 5 percent of water glass. The invention also discloses the preparation method and the application of the compound mineral material and a landfill leachate disposing method. The compound mineral material is low in cost, high in pertinence, high in treatment efficiency and small in secondary pollution, and the preparation method is simple, convenient to use, low in cost, wide in market prospect and suitable for scale production.

Description

technical field [0001] The invention relates to a composite mineral material for treating landfill leachate, a preparation method and application thereof, and belongs to the technical field of sewage treatment. Background technique [0002] The composition of landfill leachate is complex and the concentration of pollutants is high. It is difficult to use a single treatment technology to treat the difficult total nitrogen, organic matter and heavy metals at the same time to meet the national current GB16889-2008 "Pollution Control Standards for Domestic Waste Landfill Sites" on leachate. emissions requirements. At present, the commonly used treatment method is the combined process of "biochemical treatment + membrane module", but the biodegradability of landfill leachate becomes worse in the middle and late stages, and the operating cost of membrane treatment equipment is high, and the membrane is easy to clog, resulting in a decrease in flux, resulting in unstable effluent q...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28C02F3/00B01J20/16C02F101/30C02F103/16
Inventor 黄江波唐文杰莫斌余谦
Owner CHINA NONFERROUS METAL (GUILIN) GEOLOGY & MINING CO LTD
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