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Culture method of low-temperature anaerobic sludge

An anaerobic sludge and cultivation method technology, which is applied in the direction of sludge treatment, anaerobic digestion treatment, chemical instruments and methods, etc., can solve the problems of substandard effluent, unsuitable for high-concentration sewage, long cultivation time, etc., and achieve reduction Guaranteed operating cost, sewage treatment effect, and reduced energy consumption

Pending Publication Date: 2021-04-30
JILIN INST OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sewage anaerobic biological treatment is a low-cost treatment technology. It can be used for high-concentration sewage treatment, and can also be used for medium and low-concentration sewage treatment. It also has the advantages of low energy consumption and less residual sludge. However, anaerobic treatment There are also disadvantages such as slow growth of anaerobic microorganisms, long cultivation time, and the effluent often does not meet the standard and needs further treatment.
Aerobic biological treatment can make sewage treatment up to standard, but it is not suitable for high-concentration sewage, and aerobic aeration needs to provide a lot of energy

Method used

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  • Culture method of low-temperature anaerobic sludge

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Experimental program
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Effect test

Embodiment 1

[0035] (1) Enrichment culture, the activated sludge obtained in the chemical wastewater treatment process and the bottom sludge of buried septic tanks in northern rural areas were respectively inserted into the enrichment medium for enrichment culture; The weight accounts for 1% of the weight of the enriched medium, and the shaker is used for shaking culture, the rotation speed is 100rpm, and the temperature is room temperature; the composition ratio of the enriched medium includes: glucose 15g / L, peptone 2g / L, yeast extract powder 1g / L, L -Cysteine ​​0.5g / L, Sodium Chloride 3g / L, Dipotassium Hydrogen Phosphate 0.5g / L, Ammonium Sulfate 0.5g / L, Magnesium Sulfate 0.1g / L, Calcium Chloride 0.1g / L, Citric Acid Ferric ammonium 0.01g / L;

[0036] (2) Dehydration, after the sludge enrichment culture is completed, the enriched culture is centrifuged to obtain dehydrated enriched sludge; the rotational speed of the centrifugal operation is 4000rpm;

[0037] (3) Mixing, mixing dehydrated c...

Embodiment 2

[0045] (1) Enrichment culture, the activated sludge obtained in the chemical wastewater treatment process and the bottom sludge of buried septic tanks in northern rural areas were respectively inserted into the enrichment medium for enrichment culture; The weight accounts for 1% of the weight of the enriched medium, and the shaker is used for shaking culture, the rotation speed is 100rpm, and the temperature is room temperature; the composition ratio of the enriched medium includes: glucose 15g / L, peptone 2g / L, yeast extract powder 1g / L, L -Cysteine ​​0.5g / L, Sodium Chloride 3g / L, Dipotassium Hydrogen Phosphate 0.5g / L, Ammonium Sulfate 0.5g / L, Magnesium Sulfate 0.1g / L, Calcium Chloride 0.1g / L, Citric Acid Ferric ammonium 0.01g / L;

[0046] (2) Dehydration, after the sludge enrichment culture is completed, the enriched culture is centrifuged to obtain dehydrated enriched sludge; the rotational speed of the centrifugal operation is 4000rpm;

[0047] (3) Mixing, mixing, mixing de...

Embodiment 3

[0055] (1) Enrichment culture, the activated sludge obtained in the chemical wastewater treatment process and the bottom sludge of buried septic tanks in northern rural areas were respectively inserted into the enrichment medium for enrichment culture; The weight accounts for 1% of the weight of the enriched medium, and the shaker is used for shaking culture, the rotation speed is 100rpm, and the temperature is room temperature; the composition ratio of the enriched medium includes: glucose 15g / L, peptone 2g / L, yeast extract powder 1g / L, L -Cysteine ​​0.5g / L, Sodium Chloride 3g / L, Dipotassium Hydrogen Phosphate 0.5g / L, Ammonium Sulfate 0.5g / L, Magnesium Sulfate 0.1g / L, Calcium Chloride 0.1g / L, Citric Acid Ferric ammonium 0.01g / L;

[0056] (2) Dehydration, after the sludge enrichment culture is completed, the enriched culture is centrifuged to obtain dehydrated enriched sludge; the rotational speed of the centrifugal operation is 4000rpm;

[0057] (3) Mixing, mixing dehydrated...

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Abstract

The invention discloses a culture method of low-temperature anaerobic sludge, which is used for obtaining low-temperature anaerobic sludge treatment domestic sewage and belongs to the technical field of sewage treatment. The method comprises the following steps: carrying out enrichment culture on activated sludge obtained in a chemical wastewater treatment process and sludge at the bottom of a septic tank, dehydrating the sludge subjected to enrichment culture, mixing the two kinds of enriched sludge to obtain mixed sludge, carrying out alternate anaerobic culture on the mixed sludge by using artificial sewage and rural domestic sewage, and collecting the mixed anaerobic sludge. The low-temperature anaerobic sludge which can treat domestic sewage at 8 DEG C to reach the discharge standard in GB5084-2005 Standard for Water Quality of Farmland Irrigation is obtained by adopting the anaerobic sludge as a raw material, stabilizing and domesticating at low temperature, can be used in a low-temperature domestic sewage treatment device, realizes sewage treatment in winter, greatly reduces the operation cost of sewage treatment in winter, and has important significance.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment and is used for obtaining low-temperature anaerobic sludge for treating domestic sewage, in particular to a cultivation method of low-temperature anaerobic sludge. Background technique [0002] With the development of my country's rural economy and the improvement of farmers' living standards, the discharge of rural domestic sewage is increasing day by day, the types of pollutants are becoming more complex, and the concentration of pollutants is showing an increasing trend. However, most rural areas do not have effective sewage treatment measures. , the situation of rural water pollution is becoming more and more serious. In response to this situation, the state’s Central Document No. 1 in 2016 clearly requires that “the expansion of urban pipe networks, centralized treatment, and decentralized treatment should be adopted to speed up the treatment of rural domestic sewage and the improveme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28C02F11/127C02F11/121C02F101/30
CPCC02F3/28C02F11/127C02F11/121C02F2101/30
Inventor 黄秋婷金朝辉薛天福
Owner JILIN INST OF CHEM TECH
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