Device and method for improving removal rate of offshore algae bloom by utilizing modified clay powder

A technology for removal rate and clay, applied in seawater treatment, flocculation/sedimentation water/sewage treatment, etc., can solve the problems of high cost of seawater treatment, large seawater demand, etc., to improve governance effect, save limited space, and reduce quantity Effect

Active Publication Date: 2015-06-17
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the demand for seawater is large in on-site application, and the cost of seawater treatment is relatively high.

Method used

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  • Device and method for improving removal rate of offshore algae bloom by utilizing modified clay powder
  • Device and method for improving removal rate of offshore algae bloom by utilizing modified clay powder
  • Device and method for improving removal rate of offshore algae bloom by utilizing modified clay powder

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Embodiment

[0042] Using modified clay solid powder to remove Prorocentrum donghaiense and Phaeeoecystis globosa under laboratory conditions, when using modified clay solid powder to remove harmful algal blooms compared with wet clay - The flocs formed by the algae cells are larger, the sedimentation speed of the flocs is faster, and the transparency of the water body is higher after removal. The removal efficiency of Prorocentrum donghaiense is improved to 32% (0.5g / L) by wet method 18%, 25% is improved to 41% (1g / L), 61% is improved to 82% (5g / L), as Figure 6 shown. The removal efficiency of Phaeocystis globosa increased from 8% to 30% (0.25g / L), from 18% to 51% (0.5g / L), from 38% to 78% (1g / L), such as Figure 7 shown.

[0043] When the present invention is used, there is no requirement on the proportion of clay or modified clay and air, but the proportion of air can be increased appropriately. This device can be installed at the front and rear of the hull. The mixture of solid pow...

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Abstract

The invention belongs to the technical field of control and government of harmful algae bloom in seawater, and specifically relates to a device and a method for improving a removal rate of offshore algae bloom by utilizing modified clay powder. The device comprises a feeding part, a material mixing part, a pipeline part and a stirrer, wherein the material mixing part and the stirrer are arranged on a boat body; the material mixing part comprises a mixing cavity and a suspending device, wherein a feeding hole and a discharging hole are respectively formed at the upper end and the lower end of the mixing cavity; a feeding part is arranged on the feeding hole; the discharging hole is connected with the stirrer by the pipeline part; the clay or modified clay solid powder enters the mixing cavity from the feeding part, is floated under action of the suspending device; the floated clay or modified clay solid powder is carried by gas flow and enters the stirrer by the pipeline, is mixed with the seawater by virtue of stirring of the stirrer, and finally exhausted into the sea by the stirrer to generate flocculation with the harmful algae bloom, so that the harmful algae bloom organisms in seawater are removed. The device and the method disclosed by the invention can improve removal efficiency of seawater-prepared modified clay during site application, are not high in cost and are simple to operate.

Description

technical field [0001] The invention belongs to the technical field of control and treatment of harmful algal blooms in seawater, in particular to a device and method for improving the removal rate of coastal algal blooms by using clay or modified clay powder. Background technique [0002] Harmful algal blooms refer to the sudden chain proliferation and accumulation of planktonic microalgae, protozoa or bacteria in the ocean under certain environmental conditions, which cause serious damage to the marine ecosystem and changes in water color. Sexual marine ecological anomalies. In recent years, the frequency and intensity of harmful algal blooms have been increasing, and the harm caused by harmful algal blooms to the health of marine ecosystems, aquaculture and tourism is also increasing. The emergency treatment of harmful algal blooms can effectively reduce these losses, especially for some breeding areas, nursery areas, landscape and functional water bodies, it is particul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/52C02F103/08
Inventor 俞志明刘扬曹西华宋秀贤卢光远袁涌铨
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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