Effluent treatment plant is used for treated waste water which is come from different manufacturing industries where different types of chemicals and dyes are used for treated the materials. After treatment, waste water are discharge to the environment directly. This waste water is harm full for the environment. To protect the environment from the harmful effect of the waste water effluent treatment plant is used where waste water is treated and makes is not harmful to the environment.
In textile industry different types of dyes and chemicals are used in weaving, dyeing and garments washing plant. This waste water is treated in effluent treatment plant. Here I will give an idea about the biological waste water treatment plant. In dyeing process waste water is discharge from scouring, bleaching, washing and dyeing. This dyes and chemicals are supplied to the biological water treatment plant for purification.In Bangladesh; a lots of dyeing and textile industries established for processing textile products. To protect the environment from the harmful effect of the waste water the Department of Environment, Government of Bangladesh fixed the following parameters for the waste water which will discharge in the environment after treatment.
- PH = 6-9
- BOD = 50 mg/L
- COD= 200 mg/L
- Suspended solid = 150 mg/L
- Color = Light brownish.
The waste water which is produced in dyeing industry its characteristics may be as follow:
- PH = 9-11.
- BOD = 300 mg/l
- COD = 200 mg/l
- SS = 200 mg/l
- Color = Dark
After treatment the characteristics of the waste water changed as follow:
- PH = 7-8
- BOD = 30 mg/ L
- COD = 160 mg / L
- Suspended solid = 30mg/L
- Color = Light brownish
Process flow chart of biological waste water treatment plant:
Effluent comes in collection tank
↓
Equalization tank (Cooling & Mixing)
↓
Primary clarifier tank (Neutralization)
↓
Aeration tank
↓
Secondary clarifier (Tank 1 & 2)
↓
Sludge return to aeration tank
↓
Thickness filter
↓
Fish pond
↓
Outlet
So, that’s all about the effluent treatment plant. If you have better idea lets me know about it.
An ETP is under construction in Litun Fabrics Ltd. All technical and fabrication data are required to do the job properly.
I AM MASUD RANA WORK AN EFFLUENT TREATMENT PLANT AS MANAGER- E.T.P. I THINK ETP IS IMERGENCY ESSIU IN OUR COUNTRY AND FOR A BIOLOGICAL PLANT NEED A QUALIFIED PERSION. WHO CAN PROPER TAKE CARE ETP OPERATION PROPERLY. I AM IN THIS FIELD FOR 7 YEARS TILL NOW. I WANTS TO DEVELOP MY SELF IN THIS FIELD. if any one need help about biological ETP please be inform me.
I M Mudar S.F. wants to know Characteristics of waste water of flowing into ETP Aeriation Tank, before & after
This is very useful guidlense for me.....
Hello Mr. Masud Rana
ABS a US bioteh company is looking for a suitable person to market Bacterial Enzyme & nutrient product for Biological treatment in Bangladesh. If you are interested please send your C.V with relevant ETP/WTP chemical & Biological experience.
Thanks
Sohel Chowdhury
Schowd@snd-Bioscience.com
(647)831-3850
Dear sir ; pls send me basic fundamental of biological and also work of lime . Ferrous . Poly . Oregano plus plus . And their properties and reaction with effluent. Thank you very much sir
i am taim khan. i am works in e.t.p (biological)&w.t.p of purbani group. i know all test e.t.p & w.t.p. i bbuild up my carrear this job. so i nneed a perrfect job please anyyone help me.leave in gazipur, dhaka,bangladesh.
phone no 8801718829442
I am a student of textile engineering in DUET.. what is the main process in waste water processing that's use in industry..Could you inform me ??? i have a new idea to waste water processing...if you kindly inform me those of this process, then i share my knowledge to this....
Dear Textile Technologist/ Writer of this main article,
I am so sorry to say that you do not have any basic idea regarding waste water chemistry. In 3rd Paragraph of your articles, mentioned the waste water characteristics as like BOD- 300 mg/l and COD-200 mg/l. Do you exactly know what is BOD and what is COD?
The hydrocarbon(e.g. starch) which can be oxidized by micro-organism through their metabolic process can be indirectly measured by BOD. The relationship is if 23 gm oxygen is required to oxidized 12 gm carbon, so if you know the oxygen lost from the water, you can calculate the amount of carbon present in the waste water. Usually BOD is measured for 5 days period or in some cases for 3 days period or some time the ultimate BOD is also calculate.
For your information, the hydro carbon which can be metabolized by bacteria can also be oxidized by Chemical Oxidizer (such as K2Cr2O7, KMn04, H202, 03, etc.). It is also for your information, a good oxidizing agent like dichromate can oxidize 100% of organic carbon but bacteria can not metabolized all hydrocarbon (especially which is known as persistant organic matter, or long chain complex organic matter).
So, the information what I want to give you that COD value can not be less than the BOD value it can be maximum equal for very easily biodegradable compound like cooked rice. But for textile, COD will be at least 1.5 times higher than BOD. Also note, BOD is a term which the ETP designer use rather they use COD and break down it in to two parts. The term which we use at BOD is mentioned as bCOD by them. The formula is
COD= bCOD+ nbCOD where bCOD= biodegradable organic matter and nb COD non biodegradable organic matter.
So, bCOD= COD-nbCOD
I will humbly request you, not to publish any materials in public domain about which you do not have very clear understanding. You are welcome for any quarries.
Please take my sincere apology for this, my intention was not any how to personally attack you.
With Kind Regards,
Kazy Mohammad Iqbal Hossain
Senior Environmental Chemist-Asian Subcontinent
C&A Sourcing International Ltd.
Bangladesh Hub
Hello,
Mr. Masud Rana we are a China based company in Bangladesh looking for a skilled person who have experience in ETP/WTP field, if you are interested please contact with us.
Thank you
Ferdaus Zia
01712515069
We are manufaturing efficient and economical DECOLRANT for textile Dyeing & Printing waste water.epchem86@gmail.com
I m faruq,as a plant incharge in ETP & WTP in star ceramics ltd.can u help me to get me a multinational company job in thir requird field.thanks & contact my phon no.01916234554
Hi,I am Ruhul amin from Rajshahi I am completed Diploma in Environmental Technology.Now working at effluent treatment plant and water treatment plant.i can that water parameter ph.Tds.Do.Th.Bod.cod.etc but I went a environment related jobs so please help me anyone.please contact me 01725020389
Dear Sir ,
I want to Know about Bio-logical ETP, how Can I colorless the water. After treatment ? Please tell How much de-colorent / polymer would be use?
Am student in M.sc Microbiology from Periyar university,i choosing my M.sc final year project topic is PAPER EFFLUENT OF WATER TREATMENT (dye degrading method).but, now am confused for the methodology,so please anybody help the project methodology..please help me,send methodology from this mail id surendiranmsc@yahoo.com
Thank you..........
Plz help me
This is Mehdi hasan sumon. Working near about 5 years with biological ETP Plant. Want to admit an excellent working facilities.
hello Mr. Mehdi
We mainly deal with bacterial enzyme, which you can use in Biological tank to maintain required BOD, COD & TSS. We are a USA based waste water treatment company selling biological product in Bangladesh through our local agent.
Please let us know, what kind of help you looking for, may be we can help your plant if required.
Thanks
Sohel Chowdhury
Schowd@snd-bioscience.com
www.aquaticbioscience.com
Phone: 1(647)831-3850
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