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Method for intensively inducing aerobic sludge granulation by means of humic acid

An aerobic sludge and humic acid technology, which is applied in chemical instruments and methods, water/sludge/sewage treatment, biological water/sewage treatment, etc., can solve the problems of lack of humic acid, etc., and achieve the promotion of microbial growth and sedimentation performance Good, the effect of increasing the growth rate

Active Publication Date: 2017-02-22
ZHEJIANG WANLI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is still a lack of research reports on the application of humic acid in aerobic sludge granulation cultivation.

Method used

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  • Method for intensively inducing aerobic sludge granulation by means of humic acid
  • Method for intensively inducing aerobic sludge granulation by means of humic acid
  • Method for intensively inducing aerobic sludge granulation by means of humic acid

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Effect test

Embodiment 1

[0037] A kind of humic acid strengthens the method for inducing aerobic sludge granulation, and concrete steps are as follows,

[0038] 1. Take the flocculent activated sludge from the secondary sedimentation tank of the sewage treatment plant as the inoculation sludge, and after continuous aeration for 25 hours, put it into the sequencing batch (SBR) reactor, and the amount of activated sludge added is 10% of the volume of the SBR reactor , The inoculum concentration of activated sludge in the reactor is 1000mg / L.

[0039] 2. In order to ensure the formation of aerobic granular sludge, the influent is artificially synthesized to simulate domestic sewage, mainly using sodium acetate as the carbon source, ammonium chloride as the nitrogen source, potassium dihydrogen phosphate as the phosphorus source, and sodium bicarbonate to adjust pH, keep the pH value of the system at 7-8, and carry out granulation culture on the inoculated sludge in the SBR reactor; at the same time, in o...

Embodiment 2

[0043] A kind of humic acid strengthens the method for inducing aerobic sludge granulation, and concrete steps are as follows,

[0044] 1. Use the flocculent activated sludge from the secondary sedimentation tank of the sewage treatment plant as the inoculation sludge, after continuous aeration for 28 hours, put it into the sequencing batch (SBR) reactor, and the amount of activated sludge added is 20% of the volume of the SBR reactor , The inoculum concentration of activated sludge in the reactor is 1900mg / L.

[0045] 2. In order to ensure the formation of aerobic granular sludge, the influent is artificially synthesized to simulate domestic sewage, mainly using sodium acetate as the carbon source, ammonium chloride as the nitrogen source, potassium dihydrogen phosphate as the phosphorus source, and sodium bicarbonate to adjust pH, keep the pH value of the system at 7-8, and carry out granulation culture on the inoculated sludge in the SBR reactor; at the same time, in order ...

Embodiment 3

[0049] A kind of humic acid strengthens the method for inducing aerobic sludge granulation, and concrete steps are as follows,

[0050] 1. Take the flocculent activated sludge from the secondary sedimentation tank of the sewage treatment plant as the inoculation sludge, after continuous aeration for 30 hours, put it into the sequencing batch (SBR) reactor, and the amount of activated sludge added is 25% of the volume of the SBR reactor , The inoculum concentration of activated sludge in the reactor is 2400mg / L.

[0051] 2. In order to ensure the formation of aerobic granular sludge, the influent is artificially synthesized to simulate domestic sewage, mainly using sodium acetate as the carbon source, ammonium chloride as the nitrogen source, potassium dihydrogen phosphate as the phosphorus source, and sodium bicarbonate to adjust pH, keep the pH value of the system at 7-8, and carry out granulation culture on the inoculated sludge in the SBR reactor; at the same time, in order...

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Abstract

The invention discloses a method for intensively inducing aerobic sludge granulation by means of humic acid, and belongs to the technical field of wastewater treatment. The method comprises the following steps that inoculation sludge obtained after pre-aeration treatment is put into a sequencing batch (SBR) reactor and then cultured with artificially-synthesized simulated domestic wastewater; in the culturing process, when microorganisms are in a starvation state, processed natural earthy browncoal humic acid materials are put into the SBR reactor, wherein the SBR reactor runs in a water feeding-aeration-oxygen deprivation-secondary aeration-precipitation-water drainage mode for 3-4 cycles every day, each running cycle lasts 6-8 hours, and the reactor needs to be idled for a period of time after running for one cycle every time. According to the method, the processed humic acid materials are added, the growth speed of aerobic granule sludge is increased after reasonable running control procedures are conducted, and the aerobic granule sludge with a simultaneous denitrification function can be obtained after culturing is conducted for about 12-20 days.

Description

technical field [0001] The invention relates to a method for intensifying and inducing aerobic sludge granulation with humic acid, and belongs to the technical field of wastewater treatment. Background technique [0002] Humic acid is a kind of macromolecular organic weak acid mixture accumulated by natural animals and plants, especially plant residues, through the decomposition and transformation of microorganisms, as well as a series of geochemical and physical changes. Widely present in soil, peat, lignite or weathered coal. Humic acid contains active functional groups such as phenolic hydroxyl group, carboxyl group, alcoholic hydroxyl group, hydroxyquinone, sulfonic acid group, enol group, amino group and hydroxyl group. The existence of these active functional groups determines the acidity, hydrophilicity and cation exchange of humic acid. , complexation and adsorption. Studies have shown that humic acid can adjust soil pH, increase soil buffer capacity, be rich in or...

Claims

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Application Information

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IPC IPC(8): C02F3/12
CPCC02F3/12Y02W10/10
Inventor 杨国靖唐力芦晨夏静芬姚文怡张妮常岩航金理健卢奇珍
Owner ZHEJIANG WANLI UNIV
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