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Sewage treating micro algae apparatus and process

A treatment method and technology for microalgae, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of limited species and immature microalgae, and shorten the pre-culture Time, low cost, easy to cultivate effect

Inactive Publication Date: 2007-11-07
天津禄升海洋生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, all aspects of immobilized culture of microalgae are in the laboratory stage, and the types of microalgae studied are very limited and immature

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0070] Cultivate Chlorella in the culture medium shown in Table 2, the inoculation density is 5 million cells / ml, respectively at 5°C, 45°C, preferably 10°C, 30°C, more preferably 15°C, 25°C, culture After 5-10 days, transfer the chlorella liquid to sewage with a nitrogen concentration of mg / ml and a phosphorus concentration of mg / ml. The sewage has been filtered through a 120-mesh (pore size: 120um) screen, and the temperature is respectively at 5°C and 45°C. °C, preferably 10 °C, 30 °C, more preferably 15 °C, 25 °C, after 5-10 days, insert rotifers at a density of 0.2-2 rotifers / ml, after 7-10 days, use 200-300 mesh screen filter, the water can be used for aquaculture or discharge.

[0071] Stock solutions Per 400ml Final Conc(mg / L)

[0072] 1 NaNO3 10.0g 250

[0073] 2 MgSO4.7H2O 3.0g 25

[0074] 3 NaCl 1.0g 75

[0075] 4 K2HPO4 3.0g 75

[0076] 5 KH2PO4 7.0g 175

[0077] 6 CaCl2.2H2O 1.0g 25

[0078] per L

[0079] Trace element solu...

Embodiment 3

[0097] Cultivate the chlorella in the medium shown in Table 1, the inoculation density is 5 million cells / ml, after culturing for 5-10 days, transfer the chlorella liquid to a nitrogen concentration of mg / ml, and a phosphorus concentration of mg / ml In the sewage, the sewage has been filtered through a 120-mesh (aperture 120um) screen, and after 5-10 days, it is connected to rotifers with a density of 0.2-2 rotifers / ml. After 7-10 days, the water body is cleaned with 100 -300 mesh screen, 200-300 mesh screen is better, water can be used for aquaculture or discharge.

[0098] mL stock solution g / 400 mL H2O Final(mg / L)

[0099] 10 NaNO3 10.0 250

[0100] 10 CaCl2.2H2O 1.0 25

[0101] 10 MgSO4.7H2O 3.0 75

[0102] 10 K2HPO4 3.0 72

[0103] 10 KH2PO4 7.0 175

[0104] 10 NaCl 1.0 25

[0105] 2mL of PIV trace element solution

[0106] PIV metal solution.

[0107] To 1000mL of glass-distilled water, add 0.750g of Na2EDTA, and dissolve fully. Add the following salts in the amou...

Embodiment 4

[0115] Cultivate Nannochloropsis in the medium shown in Table 1, the inoculation density is 5 million cells / ml, after culturing for 5-10 days, transfer the Nannochloropsis liquid to a nitrogen concentration of mg / ml, and a phosphorus concentration of mg In the sewage per ml, the sewage has been filtered through a 120-mesh (aperture 120um) screen, and after 5-10 days, it is connected to copepods. After 7-10 days, when the density reaches 1000-6000 individuals / The water body is filtered with a 50-120 mesh sieve, and the water can be directly used for aquaculture or discharged.

[0116] In addition, when the carbon source is sodium carbonate, sodium bicarbonate, carbonic acid, carbon dioxide or a mixture thereof; when the nitrogen source is selected from organic nitrogen compounds, inorganic nitrogen compounds or a mixture thereof; In the case of iron compounds or mixtures thereof; in the case of inorganic salts, one or more substances selected from the group consisting of sodiu...

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Abstract

The present invention belongs to the field of environment protecting technology, and is especially sewage treating micro algae apparatus and process with high photosynthesis efficiency, high sewage treating efficiency and short sewage treating period. The sewage treating micro algae apparatus includes culture medium comprising carbon source of sodium carbonate, sodium bicarbonate, carbonic acid, CO2 or their mixture; nitrogen source of inorganic and / or organic nitrogen compound; phosphorus source of inorganic and / or organic iron compound; and inorganic salt selected from sodium salt, potassium salt, magnesium salt, etc. The present invention is used mainly for sewage treatment.

Description

technical field [0001] The invention belongs to the technical field of environmental protection and relates to sewage treatment technology, in particular to a device for treating sewage by using microalgae and a treatment method thereof. Background technique [0002] Water is the most basic natural resource that human beings rely on for survival, and it cannot be replaced by any other resource. my country is a water-scarce country, and the per capita water resources are about 25% of the world's average level. With the development of the economy, the water shortage situation will become more and more serious. Therefore, in order to fundamentally solve the problem of water shortage, effectively save existing water resources, and maintain sustainable economic development, we must adhere to the road of optimizing water use and water recycling. The deteriorating water environment has exacerbated the shortage of available water resources, and has increasingly become an important ...

Claims

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Application Information

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IPC IPC(8): C02F3/32
Inventor 陈幕钊高清潭
Owner 天津禄升海洋生物科技有限公司
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