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Bioactive carbon source for sewage denitrification and preparation method thereof

A biological activated carbon and denitrification technology, applied in the adjustment methods of biological treatment, biological sludge treatment, chemical instruments and methods, etc., can solve the problems of nutritional imbalance, reduction of sewage utilization rate, and potential safety hazards.

Pending Publication Date: 2021-04-30
华沃德源环境技术(济南)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the current denitrification process often dosing sodium acetate, glucose, methanol and other components of a single carbon source has high operating costs, large dosage, potential safety hazards, affecting the diversity of microorganisms in the system, unbalanced nutrition, and reducing the original carbon in sewage In order to solve problems such as the utilization rate of the source, the present invention provides a high-efficiency biologically active carbon source produced from small-molecule organic acids and their salts, small-molecule alcohols, small-molecule sugars, enzyme preparations, growth factors, and trace elements. The biologically active carbon source has the significant advantages of low cost, can effectively improve the utilization rate of the original carbon source in sewage, and reduce the dosage of additional carbon source;

Method used

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  • Bioactive carbon source for sewage denitrification and preparation method thereof
  • Bioactive carbon source for sewage denitrification and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0033] A method for preparing a bioactive carbon source for denitrification of sewage, comprising the following steps:

[0034] (1) Add acetic acid 50g in the reactor, add water 450g and dilute to 10%;

[0035] (2) Add sodium carbonate and calcium hydroxide with a mass ratio of 3:1 to the reactor, stir until completely dissolved, and adjust the pH to 6.5-7.2;

[0036] (3) Add ethylene glycol 70g, glucose 200g, maltose 35g, amylase 13g, lipase 2g, vitamin B to the reactor in sequence 6 3 g, 1 g of leucine, 4 g of glutamine, 0.3 g of magnesium sulfate, stir until completely dissolved, and mix well;

[0037] (4) Adding water to the final weight of the reaction solution in the reactor is 1000g, stirring and mixing;

[0038] (5) After the solution prepared in (4) is filtered through a ceramic membrane, a biologically active carbon source is obtained.

Embodiment 2

[0040] Taking the treatment of papermaking wastewater as an example, the method for preparing a biologically active carbon source for wastewater denitrification includes the following steps:

[0041] (1) Add acetic acid 100g in reactor, add water 400g and dilute to 20%;

[0042] (2) Add sodium hydroxide and potassium hydroxide with a mass ratio of 1:1 to the reactor, stir until completely dissolved, and adjust the pH to 6.8-7.5;

[0043] (3) Add ethylene glycol 50g, glycerol 20g, glucose 150g, cellulase 5g, vitamin B to the reactor in turn 1 6 g, 1 g of guanine, 0.3 g of magnesium sulfate, stir until completely dissolved, and mix well;

[0044] (4) Adding water to the final weight of the reaction solution in the reactor is 1000g, stirring and mixing;

[0045] (5) After the solution prepared in (4) is filtered through a ceramic membrane, a biologically active carbon source is obtained.

Embodiment 3

[0047] Taking the treatment of leather wastewater as an example, the method for preparing a biologically active carbon source for denitrification of sewage comprises the following steps:

[0048] (1) Add acetic acid 50g, propionic acid 20g in reactor, add water 280g and dilute to 20%;

[0049] (2) Add potassium hydroxide and calcium hydroxide with a mass ratio of 2:1 to the reactor, stir until completely dissolved, and adjust the pH to 5.5-6.0;

[0050] (3) Add 80g of ethanol, 250g of fructose, 35g of maltose, 13g of lipase, and vitamin B to the reactor in turn 1 1g, vitamin B6 1g, citrulline 2g, cobalt chloride 0.1g, magnesium sulfate 0.1g, zinc sulfate 0.1g, stir until completely dissolved, and mix well;

[0051] (4) Adding water to the final weight of the reaction solution in the reactor is 1000g, stirring and mixing;

[0052] (5) After the solution prepared in (4) is filtered through a ceramic membrane, a biologically active carbon source is obtained.

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Abstract

The invention belongs to the technical field of sewage treatment, particularly relates to a bioactive carbon source for sewage denitrification, and further relates to a preparation method of the bioactive carbon source. The bioactive carbon source for sewage denitrification provided by the invention is characterized by comprising the following raw materials in parts by weight: 5-25 parts of micromolecular organic acid and salt thereof, 5-10 parts of micromolecular alcohol, 15-30 parts of micromolecular sugar, 0.5-5 part of an enzyme preparation, 0.5-1 part of a growth factor, 0.01-0.03 part of trace elements and 40-60 parts of water. The bioactive carbon source for sewage denitrification has the following beneficial effects that the bioactive carbon source provided by the invention is rich in components, maintains the biodiversity of denitrifying bacteria and activated sludge microbial flora, and improves the stability and impact resistance of the system; the product disclosed by the invention has the characteristics of low component molecular weight and high biodegradability, so that the product is suitable for being absorbed and utilized by denitrifying bacteria, and the denitrification nitrogen removal efficiency can be remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a biologically active carbon source used for denitrification of sewage, and also relates to a preparation method of the biologically active carbon source. Background technique [0002] At present, more than 90% of the manufacturers in the sewage treatment plants will use the activated sludge method to treat the sewage, and the removal of total nitrogen mainly depends on the nitrification and denitrification process. Since the current urban sewage COD is 100-300mg / L, total nitrogen is 50-70mg / L, the carbon-nitrogen ratio is unbalanced, and the actual C / N is low. Most of the sewage treatment plants have BOD5 / TN<2.59, and 80% of the sewage treatment plants BOD5 / TN < 3.6, only 10% of sewage treatment plants BOD5 / TN > 4 (basically meet the requirements of denitrification). Under the dual effects of temperature and carbon-nitrogen ratio, it is difficult f...

Claims

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Application Information

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IPC IPC(8): C02F3/00C02F3/28C02F3/34C02F11/00C02F11/02
CPCC02F3/28C02F3/006C02F3/342C02F11/02C02F11/00C02F2305/06
Inventor 郭芳坤薛飞刘昱徐振华余刚宋迪
Owner 华沃德源环境技术(济南)有限公司
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