A process for treating domestic sewage using algae microspheres

A technology for domestic sewage and microspheres, applied in biological water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve problems such as difficulty in achieving ideal results, low transparency, and unfavorable growth of microalgae. Achieving the effect of reasonable size, improved removal capacity, and environmental friendliness

Active Publication Date: 2020-12-22
FUYANG HUAIBANG MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, factors such as high concentration of ammonia nitrogen and low transparency in sewage are not conducive to the growth of microalgae, and it is often difficult to achieve the desired effect by using a single microalgae to treat sewage; therefore, we need to develop efficient algae preparations to treat domestic sewage

Method used

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  • A process for treating domestic sewage using algae microspheres

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Effect test

Embodiment 1

[0031] A process for treating domestic sewage using algae microspheres, comprising the steps of:

[0032] The domestic sewage passes through the grid and the mud-water separator in order to remove solid matter, and then enters the aeration tank for aeration. After aeration for 36 hours, it enters the sedimentation tank. The sedimentation time is 24 hours. The upper liquid enters the acid-base adjustment tank, and the pH of the liquid is adjusted to 7. Then enter the biological reaction tank, the algae microspheres are inoculated in the liquid according to the ratio of 100g: 1 ton of liquid, the control temperature is 25°C, the light-dark ratio is 12:12, the light intensity is 5000LX, the treatment time is 8 days, and finally the algae The water separates and the liquid is drained.

[0033] The algae microspheres are prepared according to the following process:

[0034] 1) Take the small Crescent algae in the logarithmic growth phase, centrifuge at 7000rpm for 15min, remove th...

Embodiment 2

[0039] A process for treating domestic sewage using algae microspheres, comprising the steps of:

[0040] The domestic sewage passes through the grid and the mud-water separator in order to remove solid matter, and then enters the aeration tank for aeration. After 48 hours of aeration, it enters the sedimentation tank. The sedimentation time is 12 hours. The upper liquid enters the acid-base adjustment tank, and the pH of the liquid is adjusted to 7.5. Then enter the biological reaction tank, the algae microspheres are inoculated in the liquid according to the ratio of 200g: 1 ton of liquid, the temperature is controlled at 28°C, the light-to-dark ratio is 12:12, the light intensity is 10000LX, the treatment time is 6 days, and finally the algae The water separates and the liquid is drained.

[0041] The algae microspheres are prepared according to the following process:

[0042] 1) Take the small Crescent algae in the logarithmic growth phase, centrifuge at 7000rpm for 15min...

Embodiment 3

[0047] A process for treating domestic sewage using algae microspheres, comprising the steps of:

[0048] The domestic sewage passes through the grille and the mud-water separator in turn to remove solid matter, and then enters the aeration tank for aeration. After aeration for 40 hours, it enters the sedimentation tank. The sedimentation time is 16 hours. The upper liquid enters the acid-base adjustment tank, and the pH of the liquid is adjusted to 7- 7.5, then enter the biological reaction tank, inoculate the algae microspheres in the liquid according to the ratio of 150g: 1 ton of liquid, control the temperature at 26°C, the light-dark ratio at 12:12, the light intensity at 6000LX, and the treatment time for 7 days. Carry out algae water separation and discharge the liquid.

[0049] The algae microspheres are prepared according to the following process:

[0050] 1) Take the small Crescent algae in the logarithmic growth phase, centrifuge at 7000rpm for 15min, remove the su...

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Abstract

The invention belongs to the technical field of environment protection and discloses a technology for treating domestic sewage by utilizing algae microspheres. The technology comprises the following steps: enabling the domestic sewage to pass through a grid and a mud-water separator in sequence, so as to remove solid substances; then enabling the domestic sewage to enter an aeration tank and carrying out aeration for 36 to 48h; then conveying the domestic sewage into a sedimentation tank, wherein the sedimentation time is 12 to 24h; conveying upper-layer liquid to enter a potential of hydration (pH) regulation tank and adjusting the pH of the liquid to be 7 to 7.5; then conveying the liquid into a biological reaction tank; inoculating the algae microspheres into the liquid according to theratio of 100 to 200g of the algae microspheres to 1 ton of the liquid, wherein the treatment time is 6 to 8 days; finally, carrying out algae-water separation and discharging liquid. The technology disclosed by the invention is simple and convenient to operate; the aim of environment-friendly and green repairing can be realized; the technology has the advantages of economical efficiency and highefficiency, environment friendliness, low cost and wide application range.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a process for treating domestic sewage by using algae microspheres. Background technique [0002] Domestic sewage contains a large amount of organic matter, etc., and is generally characterized by high nitrogen, sulfur and phosphorus content, which has great harm to water resources and pollutes the environment. At present, there are many ways to deal with this sewage containing nitrogen, sulfur and phosphorus, mainly including physical treatment, chemical treatment and biological treatment. The physical treatment method is the simplest water treatment method, which recovers the insoluble suspended pollutants in the sewage through physical separation. The physical treatment method can only deal with some simple sewage treatment, but the treatment is very incomplete, and it is difficult to meet the discharge standard; The chemical treatment method lead...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/32
CPCC02F3/322
Inventor 陈英孙永跃泮红娟陈国华郑华根
Owner FUYANG HUAIBANG MACHINERY
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