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Flocculation-adsorption reagent and method for synchronously removing turbidity, ammonia nitrogen and TP in black and odorous water body

A black and odorous water body and flocculant technology, applied in chemical instruments and methods, adsorption water/sewage treatment, water pollutants, etc., can solve problems such as short flocculation settling time, single treatment of pollutants, excessive dosage, etc. Achieve the effects of low cost, improved decontamination ability and efficiency, and enhanced economic benefits

Pending Publication Date: 2021-05-14
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The second object of the present invention is to provide a kind of method that utilizes magnetic compound flocculant and qualitative chitosan-zeolite adsorbent to be used for treating black and odorous water body, and this method can realize simultaneously to black and odorous water body turbidity, Efficient removal of ammonia nitrogen and TP, with short flocculation and settling time, less dosage of chemicals, improved decontamination ability and efficiency, overcomes the shortcomings of traditional excessive dosage and single treatment of pollutants, and can realize magnetic powder recycling and enhance economic efficiency benefit

Method used

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  • Flocculation-adsorption reagent and method for synchronously removing turbidity, ammonia nitrogen and TP in black and odorous water body
  • Flocculation-adsorption reagent and method for synchronously removing turbidity, ammonia nitrogen and TP in black and odorous water body
  • Flocculation-adsorption reagent and method for synchronously removing turbidity, ammonia nitrogen and TP in black and odorous water body

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Effect test

Embodiment 1

[0036] The preparation method of qualitative chitosan-zeolite, comprises the following steps:

[0037] 1) Weigh 12g of chitosan and slowly stir it with 500mL 0.01mol / L hydrochloric acid solution for 8h, then wash it with pure water to neutralize it, place it in an electric constant temperature blast drying oven to dry for 24h, grind, sieve, and set aside.

[0038] 2) Add 2g of qualitative chitosan and 2g of zeolite in step 1) to 5% acetic acid solution at the same time, stir for 4h, then drop the suspension into 250mL of 2mol / L NaOH solution with a rubber dropper , the bead precipitate is formed, and the excess alkali is washed with ultrapure water until it becomes neutral. (with claims)

[0039] 3) Soak the beads formed in step 2) in a 7.1% NaOH solution for 12 hours, wash with ultrapure water, freeze-dry for 24 hours, and set aside.

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Abstract

The invention discloses a flocculation-adsorption reagent and method for synchronously removing turbidity, ammonia nitrogen and TP in a black and odorous water body. The flocculation-adsorption reagent comprises a magnetic compound flocculant and a modified chitosan-zeolite adsorbent; the magnetic compound flocculant is prepared from polyferric sulfate, polyacrylamide and magnetic powder; and the modified chitosan-zeolite adsorbent is formed by compounding protonated chitosan and zeolite. The flocculation-adsorption reagent is used for treating the black and odorous water, turbidity, ammonia nitrogen and TP in the black and odorous water can be efficiently removed at the same time, the turbidity and TP removal rate can reach the surface water environment quality IV standard, the ammonia nitrogen removal rate reaches the V standard, the flocculation sedimentation time is short, the dosing dosage is small, and the magnetic powder can be recycled. The flocculation-adsorption reagent is wide in raw material source, natural and non-toxic, and the preparation process is simple to operate, low in cost and suitable for industrial large-scale production.

Description

technical field [0001] The invention relates to black and odorous water emergency treatment technology, specifically, to a flocculation-adsorption reagent and method for synchronously removing turbidity, ammonia nitrogen and TP in black and odorous water, belonging to the technical field of black and odorous water treatment. Background technique [0002] The rapid development of the economy, the acceleration of urbanization, and the continuous improvement of people's living standards have also led to continuous increases in water consumption in industry, agriculture, and daily life. However, at present, the sewage treatment capacity has been subject to problems such as backwardness, imperfection, and imperfection of the treatment industry, resulting in a large amount of organic matter and suspended matter being discharged into the water body, algae and other aquatic plants multiply, and aerobic microorganisms are harmful to organic pollutants. Aerobic decomposition, when its...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/48C02F1/28B01J20/24B01J20/30C02F101/16
CPCC02F1/488C02F1/288B01J20/24B01J20/16C02F2101/16C02F2209/11
Inventor 刘云程颖思
Owner XIANGTAN UNIV
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