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Method for controlling cyanophyta microcystis bloom and portable treatment system

A treatment system and technology of Microcystis, applied in biological water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve secondary pollution, cannot be cleaned in time, cyanobacterial blooms are time-consuming and labor-intensive, etc. problem, to achieve the effect of good effect, effect and stability, and simplified operation process

Pending Publication Date: 2020-04-17
FISHERY MACHINERY & INSTR RES INST CHINESE ACADEMY OF FISHERY SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the problems that cyanobacteria blooms need to be concentrated to a very high concentration in the existing cyanobacteria bloom control method, which takes time and effort, and cannot be cleaned up in time after flocculation and sedimentation, or secondary pollution caused by resource reuse, and provides a method for controlling cyanobacteria. Microcystis genus water bloom method, cyanobacteria bloom can be controlled without concentrating to a very high concentration, and timely cleaning and resource reuse through the post-processing process, for the control of cyanobacteria bloom and resource utilization in different water bodies provide new avenues

Method used

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  • Method for controlling cyanophyta microcystis bloom and portable treatment system
  • Method for controlling cyanophyta microcystis bloom and portable treatment system
  • Method for controlling cyanophyta microcystis bloom and portable treatment system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Prepare the biofloc in advance, which is cultivated in the fish tank (can obtain activated sludge from the sewage treatment plant instead), and add the biofloc in three 60cm × 40cm × 40cm colorless transparent glass tanks, The addition amount is based on the half-hour settling time, and the addition amount of biofloc in each tank is about 30mL / L. The way to add the initial biofloc is to take out the cultivated biofloc from the original water body and put it in a plastic bucket for about 1 hour, remove the supernatant to obtain the biofloc particles that sink to the bottom, and then put Pellets were added to glass jars and concentration adjustments were made. The initial biofloc was light brown in color, and the particles were mainly brown bacterial populations, with a small amount of algae and protozoa.

[0062] At the end of June at high temperature, fish fresh cyanobacteria Microcystis blooms from the breeding ponds where cyanobacteria blooms occurred, and transfer t...

Embodiment 2

[0067]Prepare biofloc in advance, which is obtained by rotten cultivation of fish compound feed and aquaculture wastewater, in two 60cm×40cm×40cm colorless transparent glass cylinders (adding medium and high concentration microcapsules later) Algae bloom), a 600L white cylinder with a diameter of 1m (later added low concentration of Microcystis bloom), add biofloc, the amount added is based on the settling time of half an hour, the biofloc in each tank The added amount is about 85mL / L. The way to add the initial biofloc is to take out the cultivated biofloc from the original water body and put it in a plastic bucket for about 1 hour, remove the supernatant to obtain the biofloc particles that sink to the bottom, and then put Pellets were added to glass jars and concentration adjustments were made. The initial biofloc is light brown, and the particles are mainly brown bacterial groups, including a small amount of algae, protozoa, rotifers, etc.

[0068] At the beginning of hi...

Embodiment 3

[0074] The biofloc was prepared in advance and grown in the tilapia culture system in the greenhouse. Add biofloc in 2 colorless transparent plexiglass columns with a column height of 1m and a diameter of 40cm (the bottom of the column is hemispherical, and the spherical diameter is 40cm). The amount of addition is based on the settling time of half an hour. The initial addition amounts were 20mL / L and 50mL / L respectively, that is, two gradient bioflocs of low concentration and high concentration were formed. The method of adding the initial biofloc is to take out the cultivated biofloc from the original water body and place it in a plastic bucket, remove the supernatant to obtain the biofloc particles that sink to the bottom, and then add the biofloc particles Add tap water to the plexiglass column to obtain biofloc water, and adjust the concentration of biofloc. The initial biofloc was light brown in color, with mainly brown bacterial populations in the particulate matter, ...

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Abstract

The invention discloses a method for controlling cyanophyta microcystis bloom and a portable treatment system. The method comprises the steps: cyanophyta microcystis bloom is obtained; the chlorophylla (Chl-a) concentration is controlled to be 2000 [mu]g / L or less; bioflocs of which the initial addition amount is 20-100 mL / L is added, wherein the content ratio of Chl-a in the bioflocs to Chl-a inthe microcystis bloom is kept not more than 1 mL / L:20 [mu]g / L, aeration is continued, aeration is stopped when all or most of microcystis particles are absorbed by the bioflocs, standing is performeduntil all the particles sink, and an upper water body is slightly aerated until chironomidae larvae and tubular nests thereof gradually appear in the water body. When the method and the portable treatment system are used for controlling the microcystis bloom, the microcystis bloom does not need to be concentrated to a high concentration, the effect is good and stable, the by-product chironomidaelarvae can be used as aquaculture living food, and a new way is provided for control, harmless treatment and resource utilization of cyanobacterial bloom in different water bodies.

Description

technical field [0001] The invention relates to a method for controlling cyanobacteria blooms, in particular to a method for controlling cyanobacteria Microcystis blooms by biological flocs, and also relates to a convenient treatment system for controlling Microcystis blooms by biological flocs . Background technique [0002] Cyanobacteria blooms in water bodies, especially the blooms of the cyanobacteria Microcystis (Microcystis) are becoming more and more common. A large number of eutrophication and cyanobacteria blooms in water bodies seriously affect the function of water bodies, such as drinking water sources, aquaculture, and shipping. , landscape, etc., which pose a great risk to my country's water ecosystem and human health. There are various methods of controlling or controlling cyanobacterial blooms, such as chemical reagent algae killing, physical salvage, food chain biological manipulation, cyanophage control, flocculation sedimentation, ultrasonic radiation, etc...

Claims

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Application Information

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IPC IPC(8): C02F3/00
CPCC02F3/00
Inventor 王小冬车轩朱林刘子秋程峰朱俊杰
Owner FISHERY MACHINERY & INSTR RES INST CHINESE ACADEMY OF FISHERY SCI
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