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Organic wastewater treating agent and preparation method thereof

A technology of organic wastewater treatment and inorganic titanium, applied in water/sewage treatment, special compound water treatment, adsorbed water/sewage treatment, etc., can solve problems such as waste and molecular sieve deactivation

Active Publication Date: 2016-12-21
LUOYANG INST OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, molecular sieves will be inactivated after use. At present, generally inactivated molecular sieves are often used as landfill materials for road construction or solid waste accumulation, which causes huge waste.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] An organic wastewater treatment agent, which is formed by reacting activated molecular sieves, inorganic titanium salts used to coat the activated molecular sieves, and ammonium carbonate for adjusting the pH value of the reaction system to 4, followed by dehydration, drying, and calcination, wherein the inorganic titanium salts are four Titanium chloride, the amount added according to [Ti] 4+ The mass ratio of the activated molecular sieve is 15:100. The preparation method of the activated molecular sieve is as follows: firstly, the waste molecular sieve is crushed to be below 10 microns to make an ultrafine powder, and then mixed with Mix sulfuric acid with a mass concentration of 30% for 4 hours, and during the reaction, keep stirring and keep the reaction temperature at 90°C. After the reaction, filter the entire reaction system until there is no SO 4 2- ions, and the filtered filter cake was dried at 100°C for 2 hours and then dispersed into powder to obtain activ...

Embodiment 2

[0021] An organic wastewater treatment agent, which is formed by dehydrating, drying, and calcining activated molecular sieves, inorganic titanium salts used to coat activated molecular sieves, and ammonium carbonate to adjust the pH value of the reaction system to 5, wherein the inorganic titanium salts are sulfuric acid Titanium, the amount added according to [Ti] 4+ The mass ratio of the activated molecular sieve is 20:100. The preparation method of the activated molecular sieve is as follows: first, the waste molecular sieve is crushed to below 10 microns to make an ultrafine powder, and then mixed with Mix sulfuric acid with a mass concentration of 50% for 2 hours, and during the reaction, keep stirring and keep the reaction temperature at 100°C. After the reaction, filter the entire reaction system until there is no SO 4 2- ions, the filtered filter cake was dried at 110°C for 1 hour and then dispersed into powder to obtain activated molecular sieves.

[0022] The prep...

Embodiment 3

[0027]An organic wastewater treatment agent, which is formed by reacting activated molecular sieves, inorganic titanium salts used to coat activated molecular sieves, and ammonium carbonate to adjust the pH value of the reaction system to 4.5, followed by dehydration, drying, and calcination, wherein the inorganic titanium salts are sulfuric acid Titanium oxide, the amount added is according to [Ti] 4+ The mass ratio of the activated molecular sieve is 17.5:100. The preparation method of the activated molecular sieve is as follows: first, the waste molecular sieve is crushed to below 10 microns to make an ultrafine powder, and then mixed with Mix sulfuric acid with a mass concentration of 40% for 3 hours, and during the reaction, keep stirring and keep the reaction temperature at 95°C. After the reaction, filter the entire reaction system until there is no SO 4 2- ions, the filtered filter cake was dried at 105°C for 1.5 hours and then dispersed into powder to obtain activate...

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PUM

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Abstract

The invention discloses an organic wastewater treating agent and a preparation method thereof. The preparation method comprises the following steps: enabling an activated molecular sieve, an inorganic titanium salt for coating the activated molecular sieve, and ammonium carbonate for adjusting the pH value of a reaction system to 4-5 to react, and performing dehydration, drying and calcining, thereby obtaining the organic wastewater treating agent, wherein the inorganic titanium salt is added according to a mass ratio of [Ti]<4+> to the activated molecular sieve as (15-20):100; the activated molecular sieve is prepared from a waste molecular sieve which is crushed and acidified with sulfuric acid. As the waste molecular sieve is subjected to acid leaching activation, impurities which block pores of the waste molecular sieve can be dissolved by acid, and the adsorption property and the ion exchange property of the waste molecular sieve can be recovered; the activated molecular sieve is subjected to nano titanium dioxide load modification, so that the activated molecular sieve has a novel function, that is, a photocatalytic degradation property, the modified activated molecular sieve has not only adsorption and ion exchange properties, but also a photocatalytic degradation property under the radiation of ultraviolet light.

Description

technical field [0001] The invention relates to the field of solid waste development and utilization and environmental protection, in particular to an organic wastewater treatment agent and a preparation method thereof. Background technique [0002] Molecular sieves are crystalline silicates or aluminosilicates, composed of silicon-oxygen tetrahedrons or aluminum-oxygen tetrahedrons. Molecular sieves are widely used in many fields because of their nano-scale microporous structure and strong adsorption properties. , Microporous molecular sieves can be used as adsorption and separation materials, main catalytic materials and ion exchange materials, and can be used in petrochemical, petroleum processing, daily chemical and fine chemical industries. However, molecular sieves will be inactivated after use. At present, generally inactivated molecular sieves are often used as landfill materials for road construction or solid waste accumulation, which causes huge waste. There are n...

Claims

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Application Information

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IPC IPC(8): B01J20/16B01J20/30C02F1/28C02F1/32B01J29/06B01J29/03
CPCB01J20/0211B01J20/16C02F1/281C02F1/32B01J29/0308B01J29/061C02F2305/10B01J2229/18B01J35/39
Inventor 王利剑
Owner LUOYANG INST OF SCI & TECH
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