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A regeneration treatment method for hazardous solid waste containing organophosphorus pesticides

A treatment method and organophosphorus technology, applied in the direction of solid waste removal, etc., can solve the problems of poor technical applicability and generalizability, no reuse value, and few reuse and disposal technologies, so as to achieve easy production, promotion, and treatment. The method is simple and easy to implement, and the effect of reducing disposal costs

Active Publication Date: 2017-08-25
NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, many solid wastes produced in the production of pesticides have no reuse value, and some solid wastes, such as catalysts or carriers, are useless because they may be mixed with more organophosphorus pesticides or their raw materials during the production process. It becomes solid waste, but because of its small amount and relatively high price, it has a certain recycling value
[0005] At present, in the process of recycling hazardous waste in our country, there are many relatively mature technologies, but these technologies are often suitable for most types of pollutants, and specifically for the hazardous solid waste of catalysts and carriers containing organic phosphorus. Reuse and disposal technologies are relatively few, the cost is often high, and the applicability and scalability of the technology are often poor
[0006] Since the current reuse and disposal technology for organic phosphorus hazardous solid wastes has many problems such as few treatment methods, high treatment costs, and poor popularization and application, it is necessary to provide a low-cost, high removal rate, and easy-to-operate organic phosphorus-containing pesticides. Catalysts and carriers for the treatment and regeneration of hazardous solid waste will also have good application prospects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Take the attapulgite raw material and grind it with an automatic grinder to control the particle size to 300 mesh; after the grinding work is completed, use a hydrogen peroxide solution to remove some oxidizable substances. The mass concentration of the hydrogen peroxide solution is 30%. The mass ratio of the solution is 1:1, and the treatment time is 2 hours; then acid is used for infiltration and elution to pH = 5, and the specific acid is hydrochloric acid with pH = 1, and the infiltration time is 4 hours; then placed in sodium dodecylbenzenesulfonate In a saturated solution of sodium lignosulfonate, after solid-liquid separation, high-temperature calcination is carried out, the calcination temperature is controlled at 200°C, and the calcination time is 6 hours to obtain modified attapulgite; the modified attapulgite is then ground to produce Modified attapulgite particles with a particle size of about 100 μm. Take the prepared modified attapulgite particles, fully m...

Embodiment 2

[0025] Take the attapulgite raw material and grind it with an automatic grinder to control the particle size to 350 mesh; after the grinding work is completed, use a hydrogen peroxide solution to remove some oxidizable substances. The mass concentration of the hydrogen peroxide solution is 30%. The hydrogen peroxide solution and attapulgite The mass ratio of the solution is 1:2, and the treatment time is 4 hours; after that, acid is used for infiltration and elution to pH=5.5, and the specific acid is hydrochloric acid with pH=1, and the infiltration time is 8 hours; then placed in sodium dodecylbenzenesulfonate and sodium lignosulfonate saturated solution, after solid-liquid separation, high-temperature calcination is carried out, the calcination temperature is controlled at 210°C, and the calcination time is 12 hours. The calcined attapulgite particles are then ground to make a particle size of Modified attapulgite materials with a thickness of about 100 μm. Take the prepare...

Embodiment 3

[0028] Take the attapulgite raw material and grind it with an automatic grinder to control the particle size to 300 mesh; after the grinding work is completed, use a hydrogen peroxide solution to remove some oxidizable substances. The mass concentration of the hydrogen peroxide solution is 30%. The mass ratio of the solution is 1:2, and the treatment time is 3 hours; then acid is used for infiltration and elution to pH = 5, and the specific acid is sulfuric acid with pH = 1, and the infiltration time is 6 hours; then placed in sodium dodecylbenzenesulfonate In a saturated solution of sodium lignosulfonate, after solid-liquid separation, high-temperature calcination is carried out, the calcination temperature is controlled at 190°C, and the calcination time is 9 hours. The calcined attapulgite particles are then ground to make a particle size of Modified attapulgite materials with a thickness of about 100 μm. Take the prepared modified attapulgite material, fully mix it with th...

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Abstract

The invention belongs to the technical field of regeneration and utilization of hazardous solid waste, and relates to a regeneration treatment method for hazardous solid waste containing organophosphorus pesticides. The specific steps include: taking the attapulgite raw material and grinding it; first oxidizing it with hydrogen peroxide solution, then using acid soaking and eluting to weak acidity, and then placing it in a saturated solution of sodium dodecylbenzenesulfonate and sodium lignosulfonate After solid-liquid separation, high-temperature calcination is carried out to obtain modified attapulgite; the calcined attapulgite particles are ground again to make modified attapulgite materials; Mix the waste thoroughly, add sodium lignin sulfonate solution, shake fully for more than 1 hour, and separate solid precipitate after solid-liquid separation. Compared with the prior art, the method of the present invention is simple and easy to implement, has low requirements on equipment conditions, has the advantages of high treatment efficiency, no by-products, low hazard, and low treatment cost, and can also be used under extreme conditions such as high salinity. applicable.

Description

technical field [0001] The invention belongs to the technical field of hazardous solid waste regeneration and utilization, and specifically relates to a regeneration treatment method for hazardous solid waste containing organophosphorus pesticides. Background technique [0002] Organophosphorus pesticides are organic compounds containing organophosphorus pesticides used to prevent and control plant diseases and insect pests. This type of pesticide has many varieties, high efficacy, and wide application. It is an extremely important class of compounds in pesticides. However, many varieties have strong acute toxicity to humans and animals, and their harmful effects range from high toxicity to low toxicity. Symptoms, nicotine-like symptoms and central nervous system symptoms, severe pulmonary edema, cerebral edema, respiratory paralysis and death. [0003] Due to the wide use of organic phosphorus, the production volume of organic phosphorus in my country has been relatively h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09B3/00B09B5/00
Inventor 焦少俊何跃张俊田丰李彦森熊浩辉
Owner NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA