Phosphorous removing agent for wastewater produced during producing organophosphorus pesticides and preparation method thereof

A technology of organophosphorus pesticide and phosphorus removal agent, which is applied in the field of environmental remediation and achieves the effects of simple production process and low production cost

Inactive Publication Date: 2011-09-07
INST OF SOIL SCI CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Technical problem: The present invention aims at the removal of total phosphorus in organic phosphorus pesticide wastewater, and provides a phosphorus removal material with simple production process and low production cost and its preparation method

Method used

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  • Phosphorous removing agent for wastewater produced during producing organophosphorus pesticides and preparation method thereof
  • Phosphorous removing agent for wastewater produced during producing organophosphorus pesticides and preparation method thereof
  • Phosphorous removing agent for wastewater produced during producing organophosphorus pesticides and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0017] Weigh 70%, 28% and 2% montmorillonite, attapulgite and ferric chloride in sequence according to the mass percentage, grind them, and burn them at ≤500°C for 2 hours to obtain a phosphorus removal agent for organophosphorus pesticide wastewater. According to the dosage of 10g / L, add phosphorus removal agent to the glyphosate wastewater with a concentration of 103mg / L (calculated as P), and react at 60°C for 30min. Filter and measure the concentration of TP in the solution. The results show that the phosphorus removal agent can achieve 99% removal rate of total phosphorus in glyphosate wastewater.

Embodiment 2

[0019] Weigh 98%, 1% and 1% montmorillonite, lanthanum oxide, and titanium sulfate in sequence according to mass percentage, grind them, and burn them at ≤500°C for 2 hours to obtain a phosphorus removal agent for organophosphorus pesticide wastewater. According to the dosage of 12g / L, add phosphorus removal agent to the glufosinate-ammonium wastewater with a concentration of 100mg / L (calculated as P), and react at 60°C for 30min. Filter and measure the concentration of TP in the solution. The results showed that the total phosphorus removal rate of glufosinate-ammonium wastewater could reach 99%.

Embodiment 3

[0021] Weigh 60%, 38%, 1%, and 1% of attapulgite, sepiolite, aluminum sulfate, and lanthanum oxide in sequence according to mass percentage, grind them, and burn them at ≤500°C for 2 hours to obtain organophosphorus pesticide wastewater Phosphorus removal agent. According to the dosage of 10g / L, add the dephosphorization agent to the diglyphosate wastewater with a concentration of 58mg / L (calculated as P), and react at 60°C for 30min. Filter and measure the concentration of TP in the solution. The results showed that the total phosphorus removal rate of glufosinate-ammonium wastewater could reach 99%.

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Abstract

The invention provides a phosphorous removing agent for wastewater produced during producing organophosphorus pesticides and a preparation method thereof. The solid phosphorous removing agent which can effectively remove total phosphorus from the wastewater produced during producing the organophosphorus pesticides is prepared by mixing a mineral with a metal compound and supporting the metal compound with the mineral. The phosphorous removing agent and the preparation method have the following beneficial effects: the production process is simple; the production cost is low; no harmful gas or sewage is generated in the production process; and the phosphorous removing agent can be widely used for removing phosphorous from the wastewater produced during producing various organophosphorus pesticides and has an obvious phosphorous removal effect.

Description

technical field [0001] The invention belongs to the technical field of environmental restoration, and in particular relates to an organophosphorus pesticide wastewater phosphorus removal agent and a preparation method thereof. Background technique [0002] According to the "Organophosphorus Pesticide Industrial Water Pollutant Discharge Standard", there are more than 2,000 pesticide manufacturers in my country, of which 1,765 have been certified by the National Development and Reform Commission. According to the statistics of the National Bureau of Statistics, my country's pesticide output reached 1.731 million tons in 2007, ranking first in the world, of which organophosphorus pesticides accounted for 80%. my country's organophosphorus pesticide industry is one of the sectors with the heaviest environmental pollution load in the chemical industry, and it is also an industry with great difficulty in pollution control and the most investment in the fine chemical industry. Du...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/58
Inventor 刘云董元华孙含元周伟
Owner INST OF SOIL SCI CHINESE ACAD OF SCI
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