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Method for removing algae in water by using earthworms

An earthworm and algae technology, which is applied in chemical instruments and methods, applications, biological water/sewage treatment, etc., to achieve high algae removal rate, promote algae degradation, and have obvious treatment effects.

Inactive Publication Date: 2010-02-24
TONGJI UNIV
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At present, there is no report or news on the application of earthworm biofilter to the removal of algae

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  • Method for removing algae in water by using earthworms

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Embodiment 1

[0028] see figure 1 . The first step is algae pretreatment. The algae-containing water body is left idle for 2 days until the algae in the water body are in a state of decay, so as to enhance the palatability of the earthworms to the algae. Control the density of algae in water containing algae at 10 8 within a piece / L.

[0029] The second step is to build an earthworm biofilter and inoculate earthworms. Entering the Sanhaowu landscape water body of Tongji University, the measured chlorophyll concentration of the water body is about 40μg / L water, and the VSS is about 19mg / L. Inlet flow is 0.16m 3 / d. The earthworm biofilter adopts an open cylindrical filter, which can form natural ventilation. The diameter of the filter is 30cm, the total height is 40cm, and the top 10cm is the water distribution area. There is a traditional water distributor in the water distribution area for continuous water distribution. Small ceramsite of 3-5mm can increase the interception area of...

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Abstract

The invention relates to a method for removing algae in water by using earthworms, in particular to a water body algae removing method, which comprises the following steps: pumping algae-contained water with algae density lower than 10<8> / L into an algae idling tank for 2-3 days to lead the algae in the water to be decayed for increasing the palatability of the earthworm to the algae; constructingan earthworm bacteria filter and inoculating the earthworms, filling 3-5mm ceramicites in the filter, uniformly inoculating the earthworms according to the volume density of 10<11> algae per (kg earthworms.d) into the filter, uniformly arranging holes on a bottom plate of the filter, leading the algae-contained water body to flow through the successfully domesticated earthworms among the ceramicites from a water distributor at the top end of the filter, decomposing the algae into self nutrition and microorganism nutrition by using the characteristic of like eating the decayed plant pieces, and leading discharged water to flow into a sedimentation basin from the holes at the bottom of the filter. The invention has simple process, convenient management, no secondary pollution, low cost andoperation cost, and good water discharging effect, and can be widely applied to removing the algae in the water body.

Description

technical field [0001] The invention discloses a method for removing algae in a water body by using earthworms, and relates to a method for removing algae in a water body. Specifically, an earthworm biofilter is used to treat algae in the water body. technical background [0002] After years of development, a variety of algae removal technologies have been applied in practice. The existing algae removal technology is mainly divided into mechanical algae removal technology, chemical algae removal technology and biological algae removal technology. [0003] Mechanical algae removal technology is the use of microbial filtration, sound waves, various rays, ultraviolet rays, electron rays, electric fields, air flotation and other physical methods to kill or inhibit algae. For example, in China, high-frequency electronic industrial magnetization equipment, electronic processors and other equipment are used to control and kill algae in water bodies. Physical processing equipment...

Claims

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Application Information

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IPC IPC(8): C02F3/32C05G3/04C05F3/00C05G3/80
CPCY02A40/20
Inventor 陆志波王亚宜邢美艳吴敏杨健张莲
Owner TONGJI UNIV
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