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New process for wastewater recycling comprehensive treatment in alga processing

A technology for processing wastewater and comprehensive treatment, which is applied in the directions of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., to achieve good treatment effect, expand the scope, and save water resources

Active Publication Date: 2012-10-03
青岛聚大洋藻业集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The purpose of the present invention is to overcome the problems of the prior art on the treatment process of seaweed processing wastewater, and to provide a new comprehensive treatment process for waste water resource recycling and reuse

Method used

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  • New process for wastewater recycling comprehensive treatment in alga processing
  • New process for wastewater recycling comprehensive treatment in alga processing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] (1) sinking sand

[0055] The seaweed processing wastewater is naturally settled in the sand settling tank, and the sand is set for 1 hour to remove large suspended solids and impurities such as seaweed residue, chemical fiber, and sand, and the seaweed residue is used to produce seaweed slow-release fertilizer or shipped out.

[0056] (2) adjustment

[0057] The wastewater after sedimentation is pumped into the regulating tank, and the wastewater is mixed when the regulating tank is full to adjust the water quality to ensure that the wastewater is evenly mixed.

[0058] (3) Dosing air flotation

[0059] After the water quality is stabilized, the waste water is pumped into the vortex concave aeration air flotation machine, and the concentration of 12% Cacl is passed through the pipeline. 2 The solution is added to the air flotation machine, and then the polyacrylamide solution with a concentration of 2‰ is added to the air flotation machine through the pipeline, Cacl ...

Embodiment 2

[0071] (1) sinking sand

[0072] The seaweed processing wastewater is naturally settled in the sand settling tank, and the sand is settled for 0.5 hours to remove large suspended solids and impurities such as seaweed residue, chemical fiber, and sand, and the seaweed residue is used to produce seaweed slow-release fertilizer or shipped out.

[0073] (2) adjustment

[0074] The wastewater after sedimentation is pumped into the regulating tank, and the wastewater is mixed when the regulating tank is full to adjust the water quality to ensure that the wastewater is evenly mixed.

[0075] (3) Dosing air flotation

[0076] After the water quality is stabilized, the waste water is pumped into the vortex concave aeration air flotation machine, and the concentration of 5%% Cacl is passed through the pipeline. 2 The solution is added to the air flotation machine, and then the polyacrylamide solution with a concentration of 2‰ is added to the air flotation machine through the pipeline...

Embodiment 3

[0088] (1) sinking sand

[0089] The seaweed processing wastewater is naturally settled in the sand settling tank, and the sand is set for 1 hour to remove large suspended solids and impurities such as seaweed residue, chemical fiber, and sand, and the seaweed residue is used to produce seaweed slow-release fertilizer or shipped out.

[0090] (2) adjustment

[0091] The wastewater after sedimentation is pumped into the regulating tank, and the wastewater is mixed when the regulating tank is full to adjust the water quality to ensure that the wastewater is evenly mixed.

[0092] (3) Dosing air flotation

[0093] After the water quality is stabilized, the waste water is pumped into the vortex concave aeration air flotation machine, and the concentration of 10% Cacl is passed through the pipeline. 2 The solution is added to the air flotation machine, and then the polyacrylamide solution with a concentration of 2‰ is added to the air flotation machine through the pipeline, Cacl ...

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Abstract

The invention relates to a new process for wastewater recycling comprehensive treatment in alga processing industry. The process comprises the following steps of: desilting, regulating, adding chemicals, performing air floating, hydrolyzing, performing biochemical treatment, performing sand filtration, softening resin and recycling. The process has the advantages that (1) wastewater generated by processing brown algae can be treated, and alga wastewater which is generated by the processing of red algae, green algae and blue algae, alga leisure foods and convenience foods can also be treated, so that the range of the wastewater treatment of alga processing is enlarged; (2) according to the steps of adding the chemicals and performing the air floating, one of the chemicals is a calcium chloride solution, and the process is economic and environment-friendly, and has a good treatment effect compared with other wastewater treatment processes of using a polyaluminium chloride solution; and (3) the wastewater treated by a resin softening technology can be recycled completely, so that water resources can be saved to fulfill the aim of the recycling comprehensive utilization of the alga wastewater.

Description

technical field [0001] The invention relates to waste water treatment in the seaweed processing industry, in particular to a new comprehensive treatment process for resource recycling and reuse of waste water in the seaweed processing industry. Background technique [0002] At present, in the seafood processing industry, the method of treating wastewater from brown algae processing is relatively common. The traditional wastewater treatment method uses a chemical called polyaluminum chloride solution, which has high cost and poor environmental performance; seafood processing There are many types. In addition to brown algae processing, there are also red algae, green algae, and blue algae processing, seaweed snack foods, and convenience foods. There are few treatment methods for the wastewater processed by these products. [0003] In the prior art, the process for the treatment of kelp processing wastewater is as follows: [0004] 1) Kelp pretreatment wastewater: [0005] Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 程跃谟吴仕鹏郭华玉孙梅于云霞
Owner 青岛聚大洋藻业集团有限公司
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