MindMap Gallery Wastewater biological treatment process
Sewage treatment, biological treatment, activated sludge method, and sewage biological treatment technology are technologies that use the metabolic function of microorganisms to degrade and transform organic pollutants in sewage into harmless substances, thereby purifying sewage.
Edited at 2024-02-14 01:22:38Avatar 3 centers on the Sully family, showcasing the internal rift caused by the sacrifice of their eldest son, and their alliance with other tribes on Pandora against the external conflict of the Ashbringers, who adhere to the philosophy of fire and are allied with humans. It explores the grand themes of family, faith, and survival.
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[Zootopia Character Relationship Chart] The idealistic rabbit police officer Judy and the cynical fox conman Nick form a charmingly contrasting duo, rising from street hustlers to become Zootopia police officers!
Avatar 3 centers on the Sully family, showcasing the internal rift caused by the sacrifice of their eldest son, and their alliance with other tribes on Pandora against the external conflict of the Ashbringers, who adhere to the philosophy of fire and are allied with humans. It explores the grand themes of family, faith, and survival.
This article discusses the Easter eggs and homages in Zootopia 2 that you may have discovered. The main content includes: character and archetype Easter eggs, cinematic universe crossover Easter eggs, animal ecology and behavior references, symbol and metaphor Easter eggs, social satire and brand allusions, and emotional storylines and sequel foreshadowing.
[Zootopia Character Relationship Chart] The idealistic rabbit police officer Judy and the cynical fox conman Nick form a charmingly contrasting duo, rising from street hustlers to become Zootopia police officers!
Wastewater biological treatment technology
Development of activated sludge process
Advancement of mixing methods in aeration tanks
push flow
Staged aeration
Full mixed flow
adsorption regeneration method
Also known as adsorption regeneration activated sludge method or contact stabilization method, it is an improved traditional activated sludge method.
Adsorption pool: Activated sludge uses its huge surface area and porosity to quickly adsorb organic pollutants in sewage.
Regeneration tank: only aeration is performed without adding new wastewater, so that the organic matter in the activated sludge is fully oxidized and decomposed, and the activity of the sludge is also restored and improved.
Oxidation ditch process
Pasveer
Carroussel
Orbal
SBR process
ICEAS
CASS
CAST
DAT-IAT
Unitanke
Two-stage method (AB)
traditional two-stage method
High concentration sewage treatment
AB process
Section A has high load and short mud age
Section B is similar to the ordinary activated sludge process
Organic matter is adsorbed and removed in section A, and the carbon source in section B is missing, so the nitrogen and phosphorus removal effect is limited.
Deep well and pure oxygen aeration
Nitrogen and phosphorus removal
Three-stage denitrification process
The first section: the aerobic section, which removes organic matter
Second paragraph: alkali nitrification
Section 3: Anaerobic denitrification nitrogen removal
A/O process
Pool A: Anaerobic or anoxic decarbonization and denitrification
O pool: aerobic decarbonization and nitrification
Aerobic nitrification (autotrophic), anoxic denitrification (heterotrophic)
Anaerobic release of phosphorus, aerobic absorption of phosphorus
A2O process (Anaerobic-Anoxic-Oxic Process)
Simultaneous carbon removal, nitrogen removal, and phosphorus removal
mathematical model
ASM1
Mainly includes COD removal, O2 consumption and microbial reproduction and degradation
ASM2
Add phosphorus-accumulating bacteria and biological and chemical phosphorus removal to model No. 1
ASM3
Added substance storage process
activated sludge process
Application microbial respiration types and characteristics
microbial respiration type
Aerobic respiration: oxidizes ammonia nitrogen to nitrate nitrogen
Anaerobic respiration: can release phosphorus through ATP-ADP conversion
Hypoxia (facultative oxygen): available combined oxygen (nitrate)
microbial type
Heterotrophic bacteria
Denitrifying bacteria, phosphorus accumulating bacteria (obtain carbon nutrients from organic compounds)
Autotrophic bacteria
Nitrifying bacteria (use simple inorganic carbohydrates (carbon dioxide, carbonate) as carbon source to form NADH2, enter the respiratory chain, and produce ATP)
Conventional Activated Sludge Process
ASM2d
Add the phosphate-accumulating bacteria denitrification process into the model
Modified Activated Sludge Process
biosorption bio-sorption
step aeration step aeration
extended aeration extended aeration
tapered aeration process tapered aeration process
Advanced Activated Sludge Process
Oxidation Ditch
AB process (Adsorption/Bio-oxidation process)
A/O(Anoxic-Oxic process)
A2/O
Simultaneous nitrogen and phosphorus removal process (Bardenpho, Phoredox)
Sequential batch type (UCT, VIP, SBR, ICEAS, DAT-IT, CASS, UNITANK, MSBR)
Utilizing microbial production methods and sludge granulation technology
Activated sludge forms: suspended and attached
Attachment: biological fluidized bed
Suspension: various types of suspension carriers
Aerobic sludge granulation
Anaerobic sludge granulation
Utilize microbial growth competition mechanism to develop biological selector technology
Aerobic selector
Locally increase the F/M value, develop micellar bacteria, become the dominant bacterial genus in the aeration tank, and inhibit the excessive reproduction of filamentous bacteria.
Prevent sludge expansion
hypoxia selector
Anaerobic selector
Apply bioimmobilization technology to immobilize selected microorganisms or enzymes on carrier gas
cell immobilization technology
adsorption method
Covalent binding method
Cross-linking method
embedding method
Cell immobilization reactor
Denitrification reactor
Immobilized enzyme technology
Nanomaterial fixation
Chemical material fixation
Nucleic acid immobilization technology
DNA sequencing
Harnessing gene editing and genetic engineering technologies
Genetic Engineering
degradation plasmid
Genetically engineered bacteria
plasmid transfer
subtopic
In vitro recombination of degraded plasmid DNA
Plasmid molecular breeding
gene editing
Using Molecular Biology to Analyze and Characterize Microbial Populations of Biological Reaction Systems
Fluorescence in situ hybridization (FISH)
Timed quantitative QPCR input
Denaturing gradient gel electrophoresis (DGGE)