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Anaerobic granular sludge conditioning agent and preparation method and application thereof

An anaerobic granular sludge and conditioner technology, applied in anaerobic digestion treatment, chemical instruments and methods, water/sludge/sewage treatment, etc. Reactor impact, unfavorable water quality control at the end of the wastewater treatment system, poor biodegradability of surfactants, etc., to improve anaerobic treatment efficiency and load shock resistance, increase bioavailability, and avoid secondary pollution

Active Publication Date: 2021-01-05
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] 1. The function of the agent is single, and the formulation of the agent is only designed from the perspective of blocking mineral deposition and supplementing microbial nutrition, and has not considered the impact of granular sludge density and its fluidization characteristics on the anaerobic reactor;
[0010] 2. Phosphorus-based calcification inhibitors have the risk of scaling. Excessive dosing of phosphate will generate secondary calcium scale (calcium phosphate or hydroxyapatite), resulting in waste of phosphorus nutrients
[0011] 3. There is a risk of secondary pollution from chemical residues
For example, there is a risk of excessive dosing of main components such as phosphate, resulting in excessive total phosphorus in the effluent. Due to the poor biodegradability of surfactants, residual chemicals are not conducive to the control of water quality at the end of the wastewater treatment system

Method used

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  • Anaerobic granular sludge conditioning agent and preparation method and application thereof
  • Anaerobic granular sludge conditioning agent and preparation method and application thereof
  • Anaerobic granular sludge conditioning agent and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041](1) 1.5kg of trace elements (including: NH4HCO30.6kg, KH2PO30.3kg, FeSO4·7H2O0.3kg, MnSO4·H2O0.075kg, Al2(SO4)3·18H2O0.075kg, NiSO4·6H2O0.075kg, CoSO4·7H2O0.0375kg, (NH4)6MO7O24·4H2O0.0225kg, H3BO30.015kg);

[0042](2) 1.5 kg of biological factor supplements (including: amino acid 0.525 kg, vitamin 0.3 kg, purine 0.375 kg, pyridine 0.3 kg).

[0043](3) 0.8kg of alkyl polyglycoside surfactant;

[0044](1) Sodium citrate 22kg (industrial grade 98%);

[0045](2) Sodium humate 10kg;

[0046]Mix the above-mentioned raw materials, make up to 100kg with water, and stir in the mixing tank for 2 hours to obtain a liquid that is an anaerobic granular sludge regulator.

Embodiment 2

[0048]Raw materials used in this example:

[0049](1) 1.5kg of trace elements (including: NH4HCO30.6kg, KH2PO30.3kg, FeSO4·7H2O0.3kg, MnSO4·H2O0.075kg, Al2(SO4)3·18H2O0.075kg, NiSO4·6H2O0.075kg, CoSO4·7H2O0.0375kg, (NH4)6MO7O24·4H2O0.0225kg, H3BO30.015kg);

[0050](2) 1.5 kg of biological factor supplements (including: amino acid 0.525 kg, vitamin 0.3 kg, purine 0.375 kg, pyridine 0.3 kg).

[0051](3) Alkyl polyglycoside surfactant 1kg;

[0052](1) Sodium citrate 25kg (industrial grade 98%);

[0053](2) Sodium humate 10kg;

[0054]Mix the above-mentioned raw materials, make up to 100kg with water, and stir in the mixing tank for 2 hours to obtain a liquid that is an anaerobic granular sludge regulator.

Embodiment 3

[0056]Raw materials used in this example:

[0057](1) Trace elements 2kg (including: NH4HCO30.8kg, KH2PO30.4kg, FeSO4·7H2O0.4kg, MnSO4·H2O0.1kg, Al2(SO4)3·18H2O0.1kg, NiSO4·6H2O0.1kg, CoSO4·7H2O0.05kg, (NH4)6MO7O24·4H2O0.03kg, H3BO30.02kg);

[0058](2) 1.5 kg of biological factor supplements (including: amino acid 0.525 kg, vitamin 0.3 kg, purine 0.375 kg, pyridine 0.3 kg).

[0059](3) Alkyl polyglycoside surfactant 0.5kg;

[0060](1) Sodium citrate 30kg (industrial grade 98%);

[0061](2) Sodium humate 15kg;

[0062]Mix the above-mentioned raw materials, make up to 100kg with water, and stir in the mixing tank for 2 hours to obtain a liquid that is an anaerobic granular sludge regulator.

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Abstract

The invention discloses an anaerobic granular sludge conditioning agent and a preparation method and application thereof, the anaerobic granular sludge conditioning agent comprises citric acid or citrate as raw materials, humic acid, a surfactant, trace elements and a biological factor supplement. The method has the effects that 1, inorganic mineral deposition is regulated and controlled, the density of anaerobic granular sludge is regulated, the fluidization mass transfer characteristic of an anaerobic granular sludge bed is maintained, and the activity of an anaerobic granular sludge reactoris ensured, and 2, the growth of anaerobic microorganisms is promoted, and the activity of granular sludge is maintained, and the method effectively solves the problem of inactivation of the anaerobic granular sludge reactor caused by biologically induced carbonate deposition, and has remarkable application value.

Description

Technical field[0001]The invention relates to the technical field of industrial water treatment, in particular to an anaerobic granular sludge regulator and a preparation method and application thereof.Background technique[0002]Anaerobic biotechnology is often used in the treatment of high-concentration industrial wastewater. However, due to the high mineral content or lack of nutrients in the industrial wastewater, it will affect the fluidization characteristics of anaerobic granular sludge and the metabolic activity of microorganisms. For example, the calcification of anaerobic granular sludge caused by high-calcium wastewater causes the density of anaerobic granular sludge to increase sharply from the conventional range (ρ=1.0-1.2g / ml) to the calcification range (ρ>1.2g / ml). High-density sludge is unable to fluidize due to inorganic minerals squeezing the microbial space and depositing at the bottom of the reactor, which seriously affects the upflow sludge bed (UASB) reactor, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28C02F5/10
CPCC02F3/2833C02F5/10C02F2305/06C02F2305/04
Inventor 张健甘鹏赵姗姗连华刘帅覃程荣王双飞
Owner GUANGXI UNIV
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