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Method for synchronously removing anti-inflammatory agent and ammonia nitrogen on basis of sponge iron-ammonia-oxidizing microorganism system

A technology of ammonia oxidizing microorganisms and sponge iron, which is applied in chemical instruments and methods, water pollutants, aerobic and anaerobic process treatment, etc., can solve the problems of slow growth and activity decline of autotrophic ammonia oxidizing microorganisms, and achieve The effect of fast reaction time, reduced passivation, and strong synchronous degradation ability

Active Publication Date: 2016-07-13
GUANGDONG INST OF MICROBIOLOGY GUANGDONG DETECTION CENT OF MICROBIOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the core microorganisms in this process - autotrophic ammonia oxidizing microorganisms grow slowly and are easily affected by dissolved oxygen and poisons, resulting in decreased activity. Therefore, it is necessary to use external factors to protect and enhance the activity of microorganisms

Method used

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  • Method for synchronously removing anti-inflammatory agent and ammonia nitrogen on basis of sponge iron-ammonia-oxidizing microorganism system
  • Method for synchronously removing anti-inflammatory agent and ammonia nitrogen on basis of sponge iron-ammonia-oxidizing microorganism system
  • Method for synchronously removing anti-inflammatory agent and ammonia nitrogen on basis of sponge iron-ammonia-oxidizing microorganism system

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Cleaning and Pickling Activation of Sponge Iron

[0044] The used sponge iron contains more than 90% elemental iron, the particle size is 0.5-1cm, and it is cleaned and activated before use.

[0045] Cleaning: Take the required amount of sponge iron, mix it with 10 times the volume of tap water, and wash to remove iron debris and impurities.

[0046] Pickling activation: Add 2 times the volume of tap water to the cleaned sponge iron, and add an appropriate amount of hydrochloric acid with a volume fraction of 10%, so that the pH of the solution is less than 4, shake and activate for 1 minute, and then wash to neutral. Then soak the sponge iron in the same volume of tap water for later use.

[0047] Pretreatment of ammonia oxidizing microorganisms

[0048] Take 10L of urban sewage plant sludge, pass through conventional separation and sieving, remove impurities and coarse particles, settle for 5 hours, remove about 9L of supernatant, replace M0 culture medium, aerate f...

Embodiment 2

[0057] Sponge Iron Cleaning

[0058] The used sponge iron contains more than 90% elemental iron, the particle size is 1-2cm, and it is cleaned before use.

[0059] Cleaning: Take the required amount of sponge iron, rinse it directly with tap water before use, and remove iron debris and impurities after washing, then soak the cleaned sponge iron in the same volume of tap water for use.

[0060] Pretreatment of ammonia oxidizing microorganisms

[0061] Take 20L of sludge from urban sewage plants, pass through conventional isolation and sieving, remove impurities and coarse particles, settle for 3 hours, remove about 9.5L of supernatant, replace M0 culture medium, aerate for 24 hours, dissolved oxygen 3mg / L , and then settle for 2 hours, remove the supernatant and then gradually replace the M0 culture medium to cultivate the activated sludge flora.

[0062] Pre-cultivation of ammonia oxidizing microorganisms

[0063] Put the activated sludge flora cultured for 12 hours togethe...

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Abstract

The invention discloses a method for synchronously removing an anti-inflammatory agent and ammonia nitrogen on the basis of a sponge iron-ammonia-oxidizing microorganism system. According to the method, an aerobic reaction system and an anaerobic reaction system are constructed to culture ammonia-oxidizing microorganisms, the ammonia-oxidizing microorganisms are inoculated to a combined reaction system formed by a pretreatment tank, a zeolite layer and a sponge iron layer, a culture solution containing the anti-inflammatory agent is added for cultivation domestication, and the sponge iron-ammonia-oxidizing microorganism system for synchronously removing the anti-inflammatory agent and ammonia nitrogen is obtained. According to the system, the ammonia nitrogen degradation rate reaches 80% within 3 days, the acetaminophen degradation rate reaches 100% within 2 days, the diclofenac degradation rate reaches 90% within 96 h, the reaction time is short, the effect is good, and higher synchronous degradation capability of the anti-inflammatory agent and ammonia nitrogen is obtained.

Description

technical field [0001] The invention belongs to the technical field of water treatment and environmental protection, and in particular relates to a method for synchronously removing anti-inflammatory drugs and ammonia nitrogen based on a sponge iron-ammonia oxidizing microorganism system. Background technique [0002] Non-steroidal anti-inflammatory drugs (hereinafter referred to as anti-inflammatory drugs, NSAIDs) are widely used in daily life, and are currently the fastest-growing and most widely used anti-inflammatory drugs. There are now more than 100 varieties, including: acetylsalicylate, such as aspirin; non-acetylsalicylate, such as magnesium salicylate, sodium salicylate; non-salicylate, such as ibuprofen Wait. Because anti-inflammatory drugs have the characteristics of quick onset and few side effects, drugs represented by diclofenac, ibuprofen, acetaminophen, etc. have occupied the main share of the NSAIDs market. [0003] The mechanism of anti-inflammatory drug...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30C02F101/16C02F101/30
CPCC02F3/30C02F2101/16C02F2101/30
Inventor 钟玉鸣许玫英孙国萍郭俊
Owner GUANGDONG INST OF MICROBIOLOGY GUANGDONG DETECTION CENT OF MICROBIOLOGY