Biochar-mediated solid biofilm anaerobic digestion promoter and preparation method thereof

An anaerobic digestion, biofilm technology, applied in biological sludge treatment, waste fuel, fixed on or in inorganic carriers, etc., can solve problems such as long start-up time, improve sufficiency, stabilize microorganisms, improve methane Yield effect

Inactive Publication Date: 2019-05-07
NORTHWEST A & F UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

How to apply the advantages of biochar-mediated biofilm technology to the field of anaerobic digestion and avoid the shortcoming of the long start-up time caused by the time-consuming biofilm method is to achieve rapid start-up and rapid enrichment of anaerobic digestion, Stabilizing microorganisms and improving the degradation rate of organic matter in anaerobic digestion, shortening the hydraulic retention period, and increasing methane production are important issues to be solved, and are also important issues to be solved to promote the application and promotion of anaerobic digestion technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A biochar-mediated solid biofilm anaerobic digestion accelerator, which is composed of 1 part of ferrous sulfate in solid form, 0.3 part of cobalt chloride, 1 part of nickel chloride, and 0.7 part of composite Vitamins, 97 parts of anaerobically digested solid biofilms; among them, the multivitamin consists of biotin, thiamine, vitamin B 12 composition.

[0043] A preparation method of a biochar-mediated solid biofilm anaerobic digestion accelerator, comprising the steps of:

[0044] S1 Preparation of anaerobic digestion solid biofilm:

[0045] S1.1 medium preparation

[0046] Medium: NH 4 Cl 1 g / L, MgCl 2 1 g / L, NaCl 0.5 g / L, K 2 HPO4 0.4 g / L, KH 2 PO4 0.4 g / L, peptone 2 g / L, yeast extract powder 2 g / L, sodium acetate 10 g / L, trace elements 10 mL, vitamin 10 mL, L-cysteine ​​0.5 g / L, 2‰ edge Azure 2 mL, distilled water 1000 mL (pH 7.0); among them,

[0047] Trace elements (g / L): N (CH2COOH) 3 4.5 (aminoacetic acid), FeCl 2 4H 2 O 0.4, MnCl H 2 O0.1, CoCl...

Embodiment 2

[0064] A biochar-mediated solid biofilm anaerobic digestion accelerator, which is composed of 1.5 parts of ferrous sulfate in solid form, 0.7 parts of cobalt chloride, 1.5 parts of nickel chloride, and 1.3 parts of composite Vitamins, 95 servings of anaerobically digested solid biofilms; the multivitamin consists of biotin, folic acid, riboflavin, vitamin B 12 composition.

[0065] A preparation method of a biochar-mediated solid biofilm anaerobic digestion accelerator, comprising the steps of:

[0066] S1 Preparation of anaerobic digestion solid biofilm:

[0067] S1.1 medium preparation

[0068] Medium: NH 4 Cl 1 g / L, MgCl 2 1 g / L, NaCl 0.5 g / L, K 2 HPO4 0.4 g / L, KH 2PO4 0.4 g / L, peptone 2 g / L, yeast extract powder 2 g / L, sodium acetate 10 g / L, trace elements 10 mL, vitamin 10 mL, L-cysteine ​​0.5 g / L, 2‰ edge Azure 2 mL, distilled water 1000 mL (pH 7.0); among them,

[0069] Trace elements (g / L): N (CH2COOH) 3 4.5 (aminoacetic acid), FeCl 2 4H 2 O 0.4, MnCl H ...

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Abstract

The invention relates to a biochar-mediated solid biofilm anaerobic digestion promoter which comprises the following components: ferrous sulfate, cobalt chloride, nickel chloride, composite vitaminsand an anaerobic digestion solid biofilm. The anaerobic digestion solid biological membrane is prepared by freeze-drying biochar subjected to anaerobic digestion domestication and a biological membrane on the biochar. The invention also discloses a preparation method of the biochar-mediated solid biological membrane anaerobic digestion promoter. The anaerobic digestion promoter disclosed by the invention has the advantages of long effective service life, convenience in storage and transportation and simplicity and quickness in operation. When the anaerobic digestion promoter is added into an anaerobic digestion reactor, anaerobic digestion can be rapidly started, microorganisms can be rapidly enriched and stabilized, the sufficiency of anaerobic digestion organic matter degradation can beeffectively improved, the hydraulic retention period can be shortened, and the methane yield can be increased.

Description

technical field [0001] The invention relates to an anaerobic digestion accelerator and a preparation method thereof, belonging to the technical fields of resource utilization and environmental protection, and anaerobic digestion. In particular, it relates to a biochar-mediated solid biofilm anaerobic digestion accelerator and a preparation method thereof. Background technique [0002] Anaerobic digestion is a process in which organic matter is decomposed by anaerobic bacteria under anaerobic conditions to produce methane and carbon dioxide. It is an important technology for the utilization of organic waste resources and energy production. The multiple functions of the environment have a wide range of applications and important significance in the fields of sewage treatment, solid waste treatment and biogas production. With the deepening of research and the advancement of technology, the efficiency of anaerobic digestion has been continuously improved, but there are still so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P5/02C12N11/14C02F11/04
CPCY02E50/30
Inventor 邱凌陈潇
Owner NORTHWEST A & F UNIV
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