Method for formation of bioflocs by cyanobacterial bloom

A cyanobacterial bloom and biological floc technology, which is applied in the fields of botanical equipment and methods, chemical instruments and methods, biological water/sewage treatment, etc., can solve problems such as less discussion of technical methods, and achieve easy acquisition and low cost of raw materials. Effect

Active Publication Date: 2016-05-25
FISHERY MACHINERY & INSTR RES INST CHINESE ACADEMY OF FISHERY SCI
View PDF4 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few discussions on the technical methods for the formation of diatom dominance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for formation of bioflocs by cyanobacterial bloom
  • Method for formation of bioflocs by cyanobacterial bloom
  • Method for formation of bioflocs by cyanobacterial bloom

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] In high temperature July, the mixture of cyanobacteria bloom (the dominant species is Microcystis cyanophyta) and in-situ water was obtained from the aquaculture water body where cyanobacteria bloom occurred, and after proper concentration, it was placed in a 70L glass glass greenhouse. In the tank, and add a small amount of protein mass percentage in the fish mixed feed pulverized matter of 30% in the tank. Then, aerate the mixture in the tank by connecting an air stone to an air pump, and place one air stone in the tank. At this time, the total nitrogen concentration of the suspended mixture in the tank was 41.8 mg / L, the total phosphorus concentration was 10.0 mg / L, and the dissolved total organic carbon (TOC) concentration was 48.0 mg / L. The water temperature in the tank fluctuates between 25 and 38°C. Maintain continuous aeration 24 hours a day in the glass tank.

[0034]After aeration for 3 days, it can be seen that a large amount of foam appeared in the tank, a...

Embodiment 2

[0036] At the end of June, the mixture of cyanobacteria bloom and in-situ water was obtained from the culture tank where cyanobacteria bloom (the dominant species was Microcystis cyanophyta), and placed in a 70L glass tank in a glass greenhouse. And add a small amount of pulverized fish mixed feed with a protein mass percentage of 40% to the tank, and aerate the mixture in the tank. The aeration uses an air pump connected to an air stone, and a total of one air stone is placed in the tank. At this time, the total nitrogen concentration of the mixture in the tank was 120.1 mg / L, the total phosphorus concentration was 39.6 mg / L, and the dissolved total organic carbon (TOC) concentration was 100.5 mg / L. The water temperature in the tank fluctuates between 23 and 35°C. Maintain continuous aeration 24 hours a day in the glass tank.

[0037] After aeration for 3 days, it can be seen that there are more foams in the tank, the blue algae turn yellow and brown, and produce a bad smell...

Embodiment 3

[0039] At the end of June, the mixture of cyanobacteria bloom and Taihu Lake water was obtained from Taihu Lake where cyanobacteria bloom (the dominant species was Microcystis cyanophyta) occurred, and placed in a 70L glass jar in a glass greenhouse. And add a small amount of pulverized fish mixed feed with a protein mass percentage of 40% to the tank, and aerate the mixture in the tank. The aeration uses an air pump connected to an air stone, and a total of one air stone is placed in the tank. At this time, the total nitrogen concentration of the mixture in the tank was 150.0 mg / L, the total phosphorus concentration was 32.1 mg / L, and the dissolved total organic carbon (TOC) concentration was 97.3 mg / L. The water temperature in the tank fluctuates between 23 and 35°C. Maintain continuous aeration 24 hours a day in the glass tank.

[0040] After aeration for 3 days, it can be seen that there are more foams in the tank, the blue algae turn yellow and brown, and produce a bad s...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method for formation of bioflocs by cyanobacterial bloom. The method includes: acquiring cyanobacterial bloom containing in-situ water from cyanobacterial bloom occurred water and performing proper concentration to keep the total nitrogen concentration of the concentrated cyanobacterial bloom system at 40-150mg/L, the dissolved total organic carbon concentration at 40-150mg/L, and the ratio (mass ratio) of total nitrogen to total phosphorus at 3:1-6:1; maintaining aeration disturbance of the concentrated cyanobacteria bloom at 22-38DEG C for 20-25 days so as to see formed bioflocs, in which a lot of navicula, Stauroneis and other diatoms plants appear. The method can transform cyanobacterial bloom into heterotrophic bacteria preponderant bioflocs, can promote harmless treatment and utilization of nitrogen in water and accelerate conversion of water nutrients, can be directly used for treatment of cyanobacterial bloom, and the formed bioflocs can be directly used for aquaculture or sewage purification.

Description

technical field [0001] The invention relates to a method for forming water body microorganisms and plankton, in particular to a method for forming biological flocculation by utilizing cyanobacteria blooms. Background technique [0002] In terms of aquaculture, the Biofloc Technology advocated by Israeli aquaculture expert Yoram Avnimelech is one of the more advanced aquaculture technologies at present. It has many functions such as purifying water quality, accelerating water material circulation, and improving feed utilization. [0003] Biofloc technology is to artificially add organic carbon substances (such as molasses, glucose, etc.) The number of bacteria can form a biological floc that can be directly ingested by filter-feeding breeding objects, which can solve the problem of rot and feed retention in the aquaculture water in an ecologically friendly manner, purify water quality, save feed, improve the survival rate of aquaculture objects and increase production, etc. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34A01G33/00
CPCY02A40/80
Inventor 王小冬刘兴国倪琦宋奔奔张海耿刘晃陈军
Owner FISHERY MACHINERY & INSTR RES INST CHINESE ACADEMY OF FISHERY SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap