Composite sewage treatment agent and preparation method and application thereof

A technology of sewage treatment agent and composite microorganism, which is applied in the field of composite sewage treatment agent and its preparation, can solve the problems of high power consumption, water consumption, poor effect, etc., and achieve good photocatalytic sterilization and increase the effect of specific surface area

Active Publication Date: 2021-03-12
纳琦绿能工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, physical methods can only remove conventional suspended solids and substances that are easily adsorbed in sewage, but are helpless for chemical pollutants and microbial pollutants dissolved in sewage
Biological method is a method of using the metabolism of microorganisms in wastewater to decompose degradable organic matter in water, because it has the characteristics of large processing capacity, low investment, and economical reliability, but in the existing sewage treatment process, it is often necessary to divert clean water to carry out Engin

Method used

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  • Composite sewage treatment agent and preparation method and application thereof
  • Composite sewage treatment agent and preparation method and application thereof
  • Composite sewage treatment agent and preparation method and application thereof

Examples

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Example Embodiment

[0044] Example 1 Composite sewage treatment agent

[0045] The preparation method includes the following steps:

[0046] S1. Preparation of diioxamine chitosan: 100 g of chitosan is dissolved in 200 ml of 1 wt% acetic acid solution, add 5 gNOH solid, stir well, control temperature is not higher than 5 ° C, drop 75g CS 2 The control reaction temperature is not higher than 40 ° C, and the temperature is added to 45 ° C for 2 h, stop the reaction, add an equal volume of ethanol, filtered, freeze, and dry, to obtain dithiocarbamine chitosan;

[0047] Infrared detection obtained by the obtained dithiocarbamic chitosan, in its infrared spectrum, 3420-3437CM -1 The wide peak of the chitosan O-H is a multi-absorption peak that overlaps the telescopic vibration of N-H, 2875CM -1 Is methylene-M 2 - Telescopic vibration peak, at 1185cm -1 Is the telescopic vibration peak of C = S in -NH-c = s, at 1157 and 1072CM -1 The absorption peaks at the point is a non-symmetric telescopic vibration pea...

Example Embodiment

[0056] Example 2 Composite sewage treatment agent

[0057] The preparation method includes the following steps:

[0058] S1. Preparation of dithiocarbamic acid chitosan: 100 g of chitosan is dissolved in 200 ml of 3 wt% acetic acid solution, add 10 GKOH solid, stir well, control temperature is not higher than 5 ° C, drop 92g CS 2 However, the control temperature is not higher than 40 ° C, and the temperature is added to 65 ° C for stirring for 4 h, stop the reaction, add an equal volume of ethanol, filtered, freeze, and dry, to obtain a dithiocarbamic acid shell glycan;

[0059] S2. Magnetic thick-walled porous titanium dioxide in the preparation of empty balls: 100 g of titanate and 5 g of titanate coupling agent TMC-27 were dissolved in 200 ml of dichloromethane to obtain an oil phase; 30 g of chloride, 25 g of cobalt chloride, 20 g of sodium dodecyl sulfonate and 10 g of the porosity were dissolved in 70 ml of water, and the aqueous phase was obtained; the water phase droplets ...

Example Embodiment

[0067] Example 3 Composite sewage treatment agent

[0068] The preparation method includes the following steps:

[0069] S1. Preparation of dithiocarbamate chitosan: 100 g of chitosan is dissolved in 200 ml of 2 wt% acetic acid solution, add 7 gNOH solid, stir well, control temperature is not higher than 5 ° C, drop 84G CS 2 The control reaction temperature is not higher than 40 ° C, and the temperature is stirred up to 55 ° C for 3 h, stop the reaction, add an equal volume of ethanol, filtered, freeze, and dry, to obtain dithiocarbamate chitosan;

[0070] S2. Preparation of Empty Balls in Magnetic Thick Wall Porous Titanium Dioxide: 100 g of tetraisopropyl titanate and 3 g of titanate coupling agent TMC-3 were dissolved in 200 ml of dichloromethane to obtain an oil phase; 22 g of chloride 20 g of cobalt chloride, 18 g sodium stearate and 7 g of porosity dissolve in 70 ml of water, resulting in aqueous phase; adding the water droplets to the oil phase, while stirring, dropping, an...

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Abstract

The invention provides a composite sewage treatment agent and a preparation method and application thereof. The preparation method comprises the following steps: S1, preparing chitosan dithiocarbamate; s2, preparing magnetic thick-wall porous titanium dioxide hollow spheres; s3, preparing a nutrient solution; s4, preparing a strain seed solution; s5, preparing a compound microbial agent; s6, preparing the magnetic spheres coated with the chitosan dithiocarbamate; and S7, preparing the composite sewage treatment agent. According to the composite sewage treatment agent, the chitosan dithiocarbamate is wrapped in the hollow spheres so that the composite sewage treatment agent has excellent effects of adsorbing, precipitating and fixing heavy metals, and the titanium dioxide wall material alsohas photocatalytic activity, endocrine interferon, algal toxin, pathogenic microorganisms and the like are effectively removed; microorganisms fixed on the surface can effectively degrade organic pollutants in sewage, and the composite sewage treatment agent also has ferromagnetism, is removed through a magnet after sewage treatment operation is completed, and is safer and more environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a composite sewage treatment agent and its preparation method and application. Background technique [0002] At present, the lack of water resources has become one of the major problems plaguing human development. Water pollution is an environmental problem that spreads all over the world. Whether in developing countries or developed countries, this problem has attracted more and more attention. Effectively treating wastewater and rehabilitating polluted water bodies and making them reusable resources has become increasingly urgent and important in China, where the economy is developing rapidly and per capita fresh water resources are very scarce. [0003] Domestic sewage and industrial sewage generally contain a large amount of suspended solids, heavy metal ions, N-containing pollutants, S-containing pollutants, P-containing pollutants, persistent organic pollutants, p...

Claims

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Application Information

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IPC IPC(8): C02F3/34C02F101/30
CPCC02F3/34C02F2101/30
Inventor 王存建董锡洪金峰
Owner 纳琦绿能工程有限公司
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