Biological compound treatment agent for sewage and sewage treatment method

Abstract

The invention discloses a biological compound treatment agent for sewage. The biological compound treatment agent comprises a biological flocculant and chlorella. The biological compound treatment agent synchronously utilize the compound biological flocculant and the chlorella to carry out compound treatment, in order to remove the vast majority of pollutants such as ammoniacal nitrogen, SS, nitrite, nitrate nitrogen, TN (Total Nitrogen), TP (Total Phosphorus) and heavy metal. The biological compound treatment agent is efficient in pollutant removal, free from secondary pollution, and enormous in ecological benefits and economic benefits.

Description

Technical field

[0001] The invention belongs to the field of sewage treatment, and particularly relates to a sewage biological composite treatment agent and a sewage treatment method. Background technique

[0002] The pollution in China’s coastal waters is very serious, the harm is huge, and the impact is far-reaching. Due to the eutrophication of the coastal waters, red tides frequently occur, causing the dissolved oxygen (DO) content of the regional waters to decrease, and a large number of fish suffocate and die, which damages the diversity of marine life. Damage to the ecological environment is more serious. The algae toxins secreted by some red tide toxic algae are easily enriched by shellfish. Human consumption of shellfish can cause poisoning, posing a major threat to human food safety. Most offshore ecosystems are in a sub-healthy or unhealthy state. However, the low dissolved oxygen in offshore aquaculture waters caused the fish in the culture cages to become hypoxic, r...

Examples

Embodiment 1

[0014] In the biological composite treatment agent of this embodiment, the weight ratio of the composite biological flocculant to Chlorella ellipsoidea is 1:1, and the composite biological flocculant is composed of chitosan acetic acid solution, sodium alginate, chitosan acetic acid solution and seaweed The weight ratio of sodium is 1:1.

Embodiment 2

[0016] In the biological composite treatment agent of this embodiment, the weight ratio of the composite biological flocculant to Chlorella pyrenoidosa is 1:100, and the composite biological flocculant is composed of chitosan acetic acid solution, sodium alginate, chitosan acetic acid solution and The weight ratio of sodium alginate is 1:20.

Embodiment 3

[0018] In the biological composite treatment agent of this embodiment, the weight ratio of the composite biological flocculant to Chlorella vulgaris is 1:20, and the composite biological flocculant is composed of chitosan acetate solution and sodium carboxymethyl cellulose. The weight ratio of acetic acid solution and sodium carboxymethyl cellulose is 1:100.

Technical field

[0001] The invention belongs to the field of sewage treatment, and particularly relates to a sewage biological composite treatment agent and a sewage treatment method. Background technique

[0002] The pollution in China’s coastal waters is very serious, the harm is huge, and the impact is far-reaching. Due to the eutrophication of the coastal waters, red tides frequently occur, causing the dissolved oxygen (DO) content of the regional waters to decrease, and a large number of fish suffocate and die, which damages the diversity of marine life. Damage to the ecological environment is more serious. The algae toxins secreted by some red tide toxic algae are easily enriched by shellfish. Human consumption of shellfish can cause poisoning, posing a major threat to human food safety. Most offshore ecosystems are in a sub-healthy or unhealthy state. However, the low dissolved oxygen in offshore aquaculture waters caused the fish in the culture cages to become hypoxic, r...

Examples

Embodiment 1

[0014] In the biological composite treatment agent of this embodiment, the weight ratio of the composite biological flocculant to Chlorella ellipsoidea is 1:1, and the composite biological flocculant is composed of chitosan acetic acid solution, sodium alginate, chitosan acetic acid solution and seaweed The weight ratio of sodium is 1:1.

Embodiment 2

[0016] In the biological composite treatment agent of this embodiment, the weight ratio of the composite biological flocculant to Chlorella pyrenoidosa is 1:100, and the composite biological flocculant is composed of chitosan acetic acid solution, sodium alginate, chitosan acetic acid solution and The weight ratio of sodium alginate is 1:20.

Embodiment 3

[0018] In the biological composite treatment agent of this embodiment, the weight ratio of the composite biological flocculant to Chlorella vulgaris is 1:20, and the composite biological flocculant is composed of chitosan acetate solution and sodium carboxymethyl cellulose. The weight ratio of acetic acid solution and sodium carboxymethyl cellulose is 1:100.