BOD (biological oxygen demand) – The water quality indicator | bod ย่อมาจาก

by adminrecords
0 comment

BOD (biological oxygen demand) – The water quality indicator


นอกจากการดูบทความนี้แล้ว คุณยังสามารถดูข้อมูลที่เป็นประโยชน์อื่นๆ อีกมากมายที่เราให้ไว้ที่นี่: ดูเพิ่มเติม

3 Minute Water and Waste Water Video Tutorials by AET
For more information or comments contact us here: https://www.aquaequip.com/
Water testing equipment can be found here: https://www.aquaequip.com/parts/
BOD – Biological oxygen demand is the most important used assessment to determine water quality.
Its a measurement unit and stands for the needed amount of oxygen by aerobic biological organisms to break down organic matter.
COD in comparison stands only for everything that can be chemically oxidized and is therefore less specific.
The biochemical process of BOD removal can be described with the equation:
Organic matter + O2 is converted into Co2 + H20
As higher the degree of water pollution as more organic matter is present and as more Oxygen is needed for the oxidization, hence, as higher is the BOD level.
The most commonly laboratory test method used is called the BOD5 test. For this testing method one liter of waste water is filled into a testing bottle and the consumed oxygen during 5 days of incubation is measured. The test method uses 5 days of incubation time as after 5 days most organic material has already been degraded.
The test sample is continuously agitated under the absence of light and a sensor measures the decline of pressure caused by oxygen consumption.
Typical values for BOD levels are 2 to 8mg/l in moderately polluted rivers. In comparison untreated sewage in the US has a BOD level of about 300mg/l whereas European sewage averages around 600mg/l. The lower BOD level in the US are caused by a greater water use per capita.
Waste water treatment plants use different technologies to increase BOD removal significantly. One common method is to increase the amount of biological organisms by providing more surface area for attached growth. Fill media plastic blocks consists of corrugated sheets and ensure a good water and air mixing to supply the biological organisms with nutrients and oxygen. Each fill media block can provide up to 250 m2 surface area for attached growth!

See also  ชวนทำสบู่เหลวล้างมือ อาบน้ำ 5 ลิตรในงบ 42 บาท l Fit Food Fun | อุปกรณ์การทําสบู่

BOD (biological oxygen demand) - The water quality indicator

Do You Think English is the Worst Language to Learn? Here Are Some Tips to Help with That!


In this English lesson I’m going to talk about 5 of the most frustrating parts of learning English. I’ll also give a couple pieces of advice that should help you when you encounter these frustrating things.
In this English lesson I’ll talk a bit about phrasal verbs, idioms, contractions and reductions, spelling, pronunciation, and grammar rules. Knowing about the areas that can be a challenge can be the first step towards understanding them.
In the end, there are two things you can do as an English learner to alleviate some of the stress. You can make sure you get lots of input when you are learning the language. Hearing English speakers use phrasal verbs, idioms, etc. regularly can really help train your ear and your mind! You can also hire an English tutor so you can ask someone about some of the things you encounter each week as you study English!
I hope you enjoyed this English lesson, and I hope you continue to enjoy learning English even though the language can be quite challenging!
⌛ Remember: Always watch the video three times. Twice today with English subtitles on, and once tomorrow with the English subtitles off. This will reinforce the English you have learned!

✅ This video edited by Ember Productions: https://audreyember.com Thanks Audrey!

✅ Support Me and Get These Members Only Perks:
😀💲 If you would like to become a member of my channel here is the link: https://www.youtube.com/channel/UCZJJTxA36ZPNTJ1WFIByaeA/join
Becoming a member at every level has these benefits and perks:
1) For 10 minutes during each live stream you will be able to participate in the \”Members Only\” chat.
2) A cool crown beside your name during live streams and when making comments on videos.
3) Your name in green during live stream lesson chat.
4) You will have access to a members only video each Wednesday called, \”Wednesdays with Bob\”. These are behind the scenes bonus videos with full English transcripts for your listening practice.
5) A full transcript for every Tuesday video.
✅ Join now to receive these perks: https://www.youtube.com/channel/UCZJJTxA36ZPNTJ1WFIByaeA/join
I really appreciate those you that have chosen to thank me in this way! Please only support me if you can afford it!
If you prefer to support me via Patreon, here is a link to that page: https://www.patreon.com/bobthecanadian
Thank you for your generosity!

See also  Coenzyme Q10 ดีและมีประโยชน์ต่อร่างกายอย่างไร|เล่าเรื่องสุขภาพ | ข่าวสารล่าสุดเกี่ยวกับ ubiquinone คือ

✅SEND ME A POSTCARD:
Bob the Canadian
P.O. Box 419
Smithville, Ontario
Canada
L0R2A0

TAKE YOUR ENGLISH CONVERSATIONS TO THE NEXT LEVEL:
✅Talk to a real English tutor / teacher at preply: http://tracking.preply.com/SH2X
(This is an affiliate, signing up for this service helps support my channel).

FOLLOW ME:
✅ I have a second Youtube channel right here: https://www.youtube.com/channel/UCmW5tmKIBrryNf5n_A6Fmw
✅ Sign up for my email list for regular English lesson practice materials: https://bit.ly/3iW5F7h
✅ P.S. If you are interested I have created a podcast of my shorter English lessons. It is right here: https://www.buzzsprout.com/1310116

englishlesson learnenglish bobthecanadian
Note: All images used under:
CC0 License ✓ Free for personal and commercial use ✓ No attribution required
From pexels.com or pixabay.com

Do You Think English is the Worst Language to Learn? Here Are Some Tips to Help with That!

Elon Musk: The future we’re building — and boring | TED


Elon Musk discusses his new project digging tunnels under LA, the latest from Tesla and SpaceX and his motivation for building a future on Mars in conversation with TED’s Head Curator, Chris Anderson.
Visit http://TED.com to get our entire library of TED Talks, transcripts, translations, personalized talk recommendations and more.
The TED Talks channel features the best talks and performances from the TED Conference, where the world’s leading thinkers and doers give the talk of their lives in 18 minutes (or less). Look for talks on Technology, Entertainment and Design plus science, business, global issues, the arts and more. You’re welcome to link to or embed these videos, forward them to others and share these ideas with people you know.
Become a TED Member: http://ted.com/membership
Follow TED on Twitter: http://twitter.com/TEDTalks
Like TED on Facebook: http://facebook.com/TED
Subscribe to our channel: http://youtube.com/TED
TED’s videos may be used for noncommercial purposes under a Creative Commons License, Attribution–Non Commercial–No Derivatives (or the CC BY – NC – ND 4.0 International) and in accordance with our TED Talks Usage Policy (https://www.ted.com/about/ourorganization/ourpoliciesterms/tedtalksusagepolicy). For more information on using TED for commercial purposes (e.g. employee learning, in a film or online course), please submit a Media Request at https://mediarequests.ted.com

Elon Musk: The future we're building -- and boring | TED

Sia – Unstoppable (Lyrics)


Sia Unstoppable (Lyrics)
Stream/Download: https://lnk.to/UnstoppableSia
Follow our Spotify Playlist: https://loku.lnk.to/Spotify
Sia
https://www.facebook.com/SiaMusic/
https://www.instagram.com/siamusic/
https://twitter.com/Sia
Wallpaper: https://unsplash.com/
Submit your Track, questions, art or further inquiries? Please email: yoyoloku@gmail.com
Lyrics:
[Verse 1]
I’ll smile, I know what it takes to fool this town
I’ll do it ’til the sun goes down and all through the night time
I’ll tell you what you wanna hear
Keep my sunglasses on while I shed a tear
It’s never the right time
[PreChorus]
I put my armor on, show you how strong I am
I put my armor on, I’ll show you that I am
[Chorus]
I’m unstoppable, I’m a Porsche with no brakes
I’m invincible, I win every single game
I’m so powerful, I don’t need batteries to play
I’m so confident, I’m unstoppable today
Unstoppable today, unstoppable today
Unstoppable today, I’m unstoppable today
[Verse 2]
I break down, only alone I will cry out loud
You’ll never see what’s hiding out
Hiding out deep down
I know, I’ve heard that to let your feelings show
Is the only way to make friendships grow
But I’m too afraid now
[PreChorus]
I put my armor on, show you how strong I am
I put my armor on, I’ll show you that I am
[Chorus]
I’m unstoppable, I’m a Porsche with no brakes
I’m invincible, I win every single game
I’m so powerful, I don’t need batteries to play
I’m so confident, I’m unstoppable today
Unstoppable today, unstoppable today
Unstoppable today, I’m unstoppable today
Unstoppable today, unstoppable today
Unstoppable today, I’m unstoppable today
[PreChorus]
I put my armor on, show you how strong I am
I put my armor on, I’ll show you that I am
[Chorus]
I’m unstoppable, I’m a Porsche with no brakes
I’m invincible, I win every single game
I’m so powerful, I don’t need batteries to play
I’m so confident, I’m unstoppable today
Unstoppable today, unstoppable today
Unstoppable today, I’m unstoppable today
Unstoppable today, unstoppable today
Unstoppable today, I’m unstoppable today

See also  ฟิสิกส์ ม.4 เทอม 1 การวัด และ การบันทึกค่าทางวิทยาศาสตร์ | เครื่องมือ ทาง ฟิสิกส์

Sia - Unstoppable (Lyrics)

EDM remix #Faded – Alan Walker – TOp 10 bản nhạc gây nghiện


▶️Faded remix ~ Alan Walker !
https://www.youtube.com/watch?v=cFtEzQi0F4\u0026t=3337s
▶️Top 10 Bản nhạc Hay nhất EDM .
▶️Like \u0026 Share and Subscribe .
✪ Các video trên kênh \”Minh Công channel\” đã được đăng ký bản quyền với Youtube. Vui lòng không sao chép, reupload dưới mọi hình thức.
© Copyright by Minh Công channel ☞ Do not Reup.
✖ Mọi hành vi sao chép, reupload có thể dẫn đến việc tài khoản của bạn bị khóa vĩnh viễn.
● Tôi luôn tôn trọng các vấn đề bản quyền cũng như những tác giả sản xuất. Vì vậy nếu có bất cứ thắc mắc, khiếu nại nào về bản quyền hình ảnh cũng như âm nhạc có trong video mong chủ sở hữu liên hệ trực tiếp với tôi qua địa chỉ Gmail: minhcong191@gmail.com. Xin cảm ơn!

EDM remix #Faded - Alan Walker - TOp 10 bản nhạc gây nghiện

นอกจากการดูหัวข้อนี้แล้ว คุณยังสามารถเข้าถึงบทวิจารณ์ดีๆ อื่นๆ อีกมากมายได้ที่นี่: ดูวิธีอื่นๆWiki

You may also like

Leave a Comment