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Method for treating domestic sewage by bacteria-algae symbiotic system

A symbiosis technology of domestic sewage and algae, applied in biological water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve problems such as low efficiency, high cost, secondary pollution of chemical sludge, etc. , to achieve the effect of no secondary pollution, simple operation and good treatment effect

Pending Publication Date: 2021-01-15
南京卓蓝生物有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although the traditional activated sludge method has a certain treatment effect on nitrogen and phosphorus-containing sewage, it has the problem of high cost and low efficiency. What is more serious is that it will produce chemical sludge with secondary pollution after treatment. Sewage and biomass production are current research hotspots, based on the interaction between bacteria and photosynthetic microalgae, the microbial system has the characteristics of simple operation, good treatment effect, and no secondary pollution. Urban sewage has opened up a new way of thinking for treating waste with waste, saving energy and sewage treatment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] This embodiment provides a method for treating domestic sewage in a symbiotic system of bacteria and algae, which specifically includes the following steps:

[0036] (1) Culture of microalgae

[0037] Medium sterilization

[0038] Put the culture medium into Erlenmeyer flasks respectively, add HCl or NaOH to adjust the pH value to 6.8, seal it with a parafilm, sterilize at 120°C for 20 minutes, and move it to an ultra-clean bench for ultraviolet disinfection for 20 minutes after cooling to room temperature ;

[0039] The medium components include the following components: sodium nitrate: 10 parts, dipotassium hydrogen phosphate: 3 parts, magnesium sulfate heptahydrate: 0.6 parts, calcium chloride: 0.3 parts, citric acid: 0.05 parts, ferric citrate: 0.05 parts, Sodium carbonate: 1.5 parts, trace elements: 0.01 parts;

[0040] Strain transfer

[0041] Inoculate the chlorella algae into the Erlenmeyer flask of the sterilized medium according to the inoculation rati...

Embodiment 2

[0055] This embodiment provides a method for treating domestic sewage in a symbiotic system of bacteria and algae, which specifically includes the following steps:

[0056] (1) Culture of microalgae

[0057] Medium sterilization

[0058] Put the culture medium into Erlenmeyer flasks, add HCl or NaOH to adjust the pH value to 7.2, seal it with a parafilm, sterilize at 120°C for 25 minutes, and move it to an ultra-clean bench for ultraviolet disinfection for 20 minutes after cooling to room temperature ;

[0059] The medium components include the following components: sodium nitrate: 15 parts, dipotassium hydrogen phosphate: 5 parts, magnesium sulfate heptahydrate: 0.8 parts, calcium chloride: 0.4 parts, citric acid: 0.07 parts, ferric citrate: 0.07 parts, Sodium carbonate: 2.5 parts, trace elements: 0.02 parts;

[0060] Strain transfer

[0061] Inoculate the chlorella algae into the Erlenmeyer flask of the sterilized medium according to the inoculation ratio of 20%. The E...

Embodiment 3

[0075] This embodiment provides a method for treating domestic sewage in a symbiotic system of bacteria and algae, which specifically includes the following steps:

[0076] (1) Culture of microalgae

[0077] Medium sterilization

[0078] Put the culture medium into Erlenmeyer flasks, add HCl or NaOH to adjust the pH value to 7, seal it with a parafilm, sterilize at 120°C for 22 minutes, and move it to an ultra-clean bench for ultraviolet disinfection for 20 minutes after cooling to room temperature ;

[0079] The medium components include the following components: sodium nitrate: 12 parts, dipotassium hydrogen phosphate: 4 parts, magnesium sulfate heptahydrate: 0.7 parts, calcium chloride: 0.3 parts, citric acid: 0.06 parts, ferric citrate: 0.06 parts, Sodium carbonate: 2 parts, trace elements: 0.01 part;

[0080] Strain transfer

[0081] Inoculate the chlorella algae into the Erlenmeyer flask of the sterilized medium according to the inoculation ratio of 20%. The Erle...

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Abstract

The invention discloses a method for treating domestic sewage by a bacteria-algae symbiotic system. The method specifically comprises the following steps of (1) culturing microalgae, (2) expanding bacteria, (3) preparing a bacteria-algae symbiotic system, and (4) water quality treatment. The method has the advantages of simple operation, good treatment effect and no secondary pollution.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and in particular relates to a method for treating domestic sewage by an algae-bacteria symbiosis system. Background technique [0002] Water is one of the basic substances for human survival, and any life activity cannot do without water resources. With the development of the economy, the consumption of urban domestic water has increased sharply, and the discharge of large quantities of substandard urban domestic sewage has not only aggravated environmental pollution, but also forced the increasing shortage of water resources, resulting in deteriorating water quality, thus leading to a vicious cycle of the ecological environment. [0003] Although the traditional activated sludge method has a certain treatment effect on nitrogen and phosphorus-containing sewage, it has the problem of high cost and low efficiency. What is more serious is that it will produce chemical sludge with secondary pollutio...

Claims

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Application Information

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IPC IPC(8): C02F3/32C02F3/34C02F101/10C02F101/16C02F101/20C02F101/30
CPCC02F3/325C02F2101/105C02F2101/16C02F2101/20C02F2101/30
Inventor 陈伟刘永梅黄闯
Owner 南京卓蓝生物有限公司
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