Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of treatment method of phosphorus-containing pesticide wastewater

A treatment method and phosphorus pesticide technology, applied in the field of water treatment, can solve the problems of unsatisfactory inorganic phosphorus removal effect, high treatment cost, complicated operation steps, etc., and achieve the effects of excellent micro-electrolysis efficiency and ideal pretreatment effect.

Active Publication Date: 2020-05-12
江西源春环保科技有限公司
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent 201110383538.1 optimizes this method, which is suitable for treating high-concentration organic phosphorus wastewater, but it also has unsatisfactory removal effects on inorganic phosphorus such as metaphosphorous, phosphorous, and hypophosphorous, and the treatment cost is high and the operation steps are complicated.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] After analysis of the phosphorus-containing pesticide wastewater to be treated, the COD in the raw water is 3250mg / L, and the total phosphorus is 620mg / L; micro-electrolysis treatment: adjust the pH value of the phosphorus-containing pesticide wastewater to 7.5, and perform micro-electrolysis treatment under alkaline conditions. Copper powder is loaded on carbon rods, titanium dioxide powder is loaded on diatomaceous earth as the cathode, and the waste water treated by micro-electrolysis is sent to the contact oxidation tank for treatment. Oxygen is 3mg / L; after contact oxidation treatment, the wastewater enters the UASB reactor from the bottom of the UASB reactor for anaerobic treatment, the water temperature is adjusted to 30°C, the pH value is 7.5, and the hydraulic retention time is 20 hours; The coagulation and sedimentation treatment is carried out in the coagulation sedimentation tank. The flocculants added are PAC and PAM, and the stirring and sedimentation is ca...

Embodiment 2

[0018] The same phosphorus-containing pesticide wastewater as in Example 1 was used to carry out the test.

[0019] Micro-electrolysis treatment: adjust the pH value of phosphorus-containing pesticide wastewater to 8, and carry out micro-electrolysis treatment under alkaline conditions. The anode uses carbon rods to load copper powder, and the cathode uses diatomaceous earth to load titanium dioxide powder. The wastewater treated by micro-electrolysis is sent to contact oxidation Treatment in the pool, during the reaction process, the pH is 8.0, the water temperature is adjusted to 25°C, the contact residence time is controlled at 4 hours, and the dissolved oxygen is 4mg / L; after contact oxidation treatment, the wastewater enters the UASB reactor from the bottom of the UASB reactor for anaerobic treatment. For treatment, the water temperature is adjusted to 30°C, the pH value is 7.5, and the hydraulic retention time is 20 hours; the effluent after UASB treatment enters the coag...

Embodiment 3

[0021] The phosphorus-containing pesticide wastewater to be treated is analyzed, and the COD in the raw water is 4045mg / L, and the total phosphorus is 735mg / L; micro-electrolysis treatment: adjust the pH value of the organic phosphorus pesticide wastewater to 7.5, and perform micro-electrolysis treatment under alkaline conditions. Copper powder is loaded on carbon rods, titanium dioxide powder is loaded on diatomaceous earth as the cathode, and the waste water treated by micro-electrolysis is sent to the contact oxidation tank for treatment. Oxygen is 3mg / L; after contact oxidation treatment, the wastewater enters the UASB reactor from the bottom of the UASB reactor for anaerobic treatment, the water temperature is adjusted to 30°C, the pH value is 7.5, and the hydraulic retention time is 20 hours; The coagulation and sedimentation treatment is carried out in the coagulation sedimentation tank. The flocculants added are PAC and PAM, and the stirring and sedimentation is carried...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
pore sizeaaaaaaaaaa
verticalityaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of pesticide wastewater treatment, and particularly relates to a treatment method of a phosphorus-containing pesticide wastewater. The invention aims at residual phosphorus-containing organic matters, esters, COD, total phosphorus and the like in phosphorus-containing pesticide wastewater and adopts a "micro electrolysis-biological contact oxidation-UASB- coagulation-Fenton-filter" combined processing method for filtering, so that the discharged water reaches the emission standard; the method disclosed by the invention can effectively remove inorganic phosphorus such as organic phosphorus and phosphite in the wastewater, and the effect of the method is superior to that of the conventional chemical method for removing phosphorus in the wastewater; the pH value of the traditional organophosphorus pesticide wastewater is slightly alkaline, the micro-electrolysis can react under an alkaline condition, and an additional acid reagent does not needto be added.

Description

technical field [0001] The invention belongs to the technical field of water treatment, in particular to a method for treating phosphorus-containing pesticide wastewater. Background technique [0002] The treatment of organophosphorus pesticide wastewater has become a difficult problem in the field of water treatment at home and abroad. This type of wastewater contains a large amount of organophosphorus pesticide intermediates and hydrolyzed products, which are highly toxic, have many refractory substances, and have poor biochemical properties. It is difficult to directly use biochemical methods to treat them without mixing or diluting other organic wastewater. The residual intermediates or finished products in organophosphorus pesticide wastewater are highly toxic and have a stable chemical structure. If effective pretreatment measures can be taken to degrade large molecules into small molecules and reduce the toxicity of pollutants in wastewater, the biochemical properties...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F101/30C02F101/10
CPCC02F1/283C02F1/44C02F1/461C02F1/46109C02F1/48C02F1/5236C02F1/56C02F1/66C02F1/722C02F1/725C02F3/02C02F3/2846C02F9/00C02F2001/46138C02F2101/105C02F2101/30C02F2101/306C02F2301/08C02F2305/026
Inventor 王一珍
Owner 江西源春环保科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com