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Monday, November 13, 2017

PRIMARY EFFLUENT TREATMENT PLANT (PETP)

PRIMARY EFFLUENT TREATMENT PLANT (PETP)


PARAMETERS OF TREATED WATER for HOTELS , HOSPITALS and other industries currently accepted by Pollution Control Board of Assam. (PCBA)

The parameters of the treated effluent water will be  as under meeting norms of Pollution control Board (PCBA) .
pH Between 5.5 to 9
TSS (Total suspended solid below 150 mg/liter
BOD( Biological oxygen demand) less than 30 mg/liter
COD(Chemical oxygen demand) less than 250 mg/liter
Oil & grease less than 10 mg/liter



IF WASTE WATER FROM HOTEL, HOSPITAL EXCEEDS THE ABOVE VALUE, ONE PETP IS TO BE INSTALLED FOR TREATING WASTE WATER AND BRING IT WITHIN LIMITS MENTIONED ABOVE.

Our Consultancy & Supervision scope:
We offer our  work on consultancy basis for the Hotels ,hospitals, restaurants, wedding hall, ccar service station, tea garden and other industries. . All the civil & execution work will be done by the respective Hotel  , under our guidance from initial survey to the final report submission to the Pollution Control Board of Assam (PCBA).
1.Preparation of  drawing as per site condition for each location of hotels , it’s size , their  complexity and need of the hotel   . Thus there is no common solution for all hotels if Customized concept is adopted ,  So will  provide customized system plant for each site. Also, at various sites there are exiting septic tanks and other tanks ,pipes etc which can be adjusted in our proposed system which will reduce construction cost.
2 . We shall Provide a Flow Chart & project  report for submission to the PCBA
3.We will supervise the progress of the civil works during construction time of the ETP.
4.We will provide you a list of  dealers from where you can buy the pump , blower and chemicals.
5..We will train your staff for first 3 days how to run the plant & provide a maintenance manual for the plant
6. We will provide a first  water test report to be submitted to pollution board
7. We shall help in filling of the Documents to be submitted to the PCBA . All the legal fees & dues needs to be cleared by the client . The extra cost for Consent to operate or NOC is not included in the Consultancy

DATA REQUIRED:
a)Quantity of waste water generated liter per day
b) Waste Water test report .
.

TREATMENT METHOD OF PETP:

Chemical pre treatment followed by filtration



Flow Chart of PETP:

IN-Screen—Oil Trap---Collection Tank---Primary Sedimentation--— ------Disinfection Tank—Pump---Filter ----Out to drain



Details of different units of the proposed system


A)CHEMICAL TREATMENT OF WASTE WATER IN PETP

a)    Screen   :Waste water will flow through these drains by gravity flow from the inlet manhole. To remove large floating objects , bar screens and oil traps are provided inside the incoming drain itself .
b)    Collection tank: All waste water will be collected here .Lime and Alum will be added here and mixed by air bubbling from a air blower..Waste water will flow by gravity to the next unit.
c)    Primary Sedimentation tank(PST): The chemical sludge will be settled here. Waste water will flow by gravity to the next unit. Sludge is removed by sludge pump to sludge drying beds.



d)Disinfection tank : Disinfection is done here with bleaching powder to remove colour,  bactaria and other contaminants and  than pumped  to the pressure sand filter and finally released to drain.



IRON FILTER FOR TREATMENT OF WELL WATER FOR WHOLE HOUSE


IRON FILTER FOR TREATMENT OF WELL WATER FOR WHOLE HOUSE

Indication Cause Treatment
Water clear when drawn but red-brown or black particles appear as water stands; red-brown or black stains on fixtures or laundry

ENVO IRON FILTER:
We bring for the clients an encompassing range of Iron Removal Plant(IR Plant) which is widely used for Iron removal from water. The Iron Removal Plant (IR Plant) we offer is manufactured with high grade raw material. Our range of Iron Removal Plant (IR Plant) is offered at leading market prices consists of Domestic Iron Removal Plant, Iron Removal Plant for flat and apartments, Industrial Iron Removal ,FRP Iron Removal, MS Iron Removal.
Our specially designed Iron Removal Plant without Shallow Hand Pump can remove metals and chemical contamination. Our Iron Removal Plant without Shallow Hand Pump are provided with highly adsorptive filters to trap even the last trace of iron content in water and thereby rendering clean and healthy water.
Capacity :250 LPH   to 50,000 LPH
Usage:
1.    For community Purpose In rural areas
2.    For residence, housing, office building Purpose
3.    For school, collage, educational institutes Purpose
4.    For hotels, restaurants, resorts Purpose
5.    For hospitals, nursing homes and others medical institutes Purpose.
6.    For Municipality water supply, Corporation Purpose
7.    For Industrial purpose like paper mills, cotton mills, Poultry Firms, Chemical plant, Pharmaceutical purpose etc.
We also provide customized solutions for any sort of water related problems.
                     
    STANDARDS FOR POTABLE WATER :

Suspended Solids < 500 ppm
Turbidity < 10 ppm
B-Coli—NIL
M.P.N. – one number in 100 ml
Hardness <100 o:p="" ppm="">
Chloride<250 o:p="" ppm="">
Iron and Manganese < 0.3 ppm
PH= 6.5 to 8
Lead< 0.1 ppm
Arsenic< 0.05 ppm
Sulphate < 250 ppm
Carbonate Alkalinity < 120 ppm
Dissolved Oxygen = 5 to 6 ppm
B.O.D—NIL

Any parameter above the limits as mentioned above will require treatment

Treatment method: Chemical oxidation followed by filtration
Iron or manganese also can be oxidized from the dissolved to solid form by passing through oxidizing agent called MNO2.

 The resulting solid particles then must be filtered. When large concentrations of iron are present, a flushing sand filter may be needed for the filtering process.


Any filtration material requires frequent and regular backwashing or replacement to eliminate the solid iron/manganese particles. Some units have an automatic backwash cycle to handle this task. 


FLOW CHART :
 Well ---pump-----MNO2 Filter (BLUE COLOUR)---Anthracite filter (GREEN COLOUR)----Collection Tank---pumped to overhead tank of the house----supply to house.



FIRST FILTER: MNO2 FILTER

Filter Media – MNO2 Manganese di oxide

Iron and Manganese removal
Supplied in 25Kg bags
What it is and how it works
MNO2 is a oxidizing agent to precipitate iron and/or manganese. Because the presence of iron is most common, iron removal is the usual application for MNO2. Under suitable conditions, the iron and dissolved oxygen in water react on contact with the MNO2 filter bed and, as a result, the iron is precipitated in the form of hydroxide. This is a flocculent material which is filtered out in the bed of anthracite. Periodic backwashing flushes out the accumulated iron and the MNO2 is again ready to perform its function. MNO2 is not consumed in the iron removal operation.

SECOND FILTER:
SAND-ANTHRACITE FILTER FOR IRON REMOVAL
A sand-anthracite filter or dual media filter/multi-media filter is primarily used for the removal of turbidity and suspended solids as low as 10-20 microns. Inside a sand-anthracite filter is a layered bed of filter media. The bed is graded from bottom to top as follows:

1st layer
=
gravel support bed
2nd layer
=
2mm filter sand
3rd layer
=
fine filter sand
4th layer
=
anthracite
 How it works:
Anthracite has a high affinity for iron, especially when it is coated with potassium permanganate, and is therefore often employed for iron and manganese removal.
CONTACT FOR COSTS AND OTHER DETAILS: Saleem Asraf Syed Imdaadullah, 09899300371(Delhi)whatsapp
Rakib Hussain (Mobile: 9859171561,Guwahati.)

To design any iron filter we need the following two data
1.How much liter of water is to be treated in a day
2.Water test report mentioning Iron content.

WATER TESTING LAB AT GUWAHATI
Jalavikshan, +(91)-9864278211 , +(91)-9435045921 1st Floor,Techno Plaza Complex, M L Nehru Road, Panbazar, Guwahati - 781001, Near Pan Bazar Over Bridge

ASSAM TRIBUNE NEWS REPORT

Source of Article :http://www.assamtribune.com/scripts/detailsnew.asp?id=jan2916/at056


Groundwater contamination cases rising in State
Ajit Patowary
 GUWAHATI, Jan 28 - Cases of contamination of groundwater in the State are swelling up everyday, making groundwater unsafe for consumption. According to the official data, the number of the State’s districts which have got their groundwater contaminated by fluoride and arsenic has shot up to 22 and 21 respectively from 19 and 20 respectively in 2014-’15.
According to the data available with this newspaper, in 2014-’15, the arsenic affected districts of the State included Baksa, Barpeta, Bongaigaon, Cachar, Darrang, Dhemaji, Dhubri, Goalpara, Hailakandi, Jorhat, Kamrup, Karimganj, Kokrajhar, Lakhimpur, Morigaon, Nagaon, Nalbari, Sivasagar and Sonitpur.
This year, Tinsukia has also been found to be affected by arsenic, raising the number of affected districts to 21, said the sources.
Till 2013-’14, nine districts – Barpeta, Dhubri, Goalpara, Golaghat, Jorhat, Kamrup, Karbi Anglong, Karimganj and Nagaon – were found to be affected by fluoride.
But in 2014-’15, with the inclusion of Baksa, Cachar, Chirang, Darrang, Dibrugarh, Morigaon, Nalbari, Sivasagar, Sonitpur and Udalguri, the number of affected districts rose to 19.
In 2015-’16, with the inclusion of Bongaigaon, Lakhimpur and Tinsukia, the number of fluoride-affected districts have shot up to 22, sources said.
According to experts here, the trend of rise in the number of fluoride and arsenic affected districts should be studied, together with the impact of such contamination of groundwater, which is used by the people of many areas in these districts for the purpose of drinking as well as domestic use, on human and animal health.
Except in the two districts of Karbi Anglong and Nagaon, no comprehensive health impact studies of groundwater contamination in the rest of the districts has so far been known to have been conducted, said the experts. The origin of fluoride so far is known to be geogenic.


The State’s Department of Mining and Mineral may undertake such studies, involving also the Public Health Engineering Department (PHED), Council of Scientific and Industrial Research (CSIR), Central Ground Water Board (CGWB) and the North Eastern Regional Institute of Water and Land Management (NERIWALM) in this regard, said the experts

Wednesday, October 04, 2017

Thumb Rule of Financial planning.


Thumb Rule of Financial planning.

1. 30 % of your income must be used for monthly living expenses.

2. 30% of your income must be used for Liabilities repayments, if any..

3. 30% of your income must be SAVED and INVESTED for your future LIVING.

4. 10% of your income must be spared for entertainments, vacations

5. 6 months expenses must be available for emergency fund (should be invested in LIQUID FUND, FD Etc)

6. Home loan must be registered and apply on both husband and wife name. (Both can get benefits on Home loan Tax benefits)

7. Buying second house for investment is not advisable ( Survey reports - it will fetch you only around 3% return)

8. After 45 years of age, not supposed to enter into any BIG LIABILITIES (Higher education of children and wedding of children will happen around 45 to 50 only, so plan now for the same.)

9. Have joint account @ Bank savings account.

10. Property must be registered on both Husband and wife name. (As per legal act – after husband first legal heir is wife, after wife it will go to children only)

11. Regular check on Nominations at all financial instruments. if not nominated, do it now..

12. Only in insurance policy, Claims payable to Nominee. In other financial instruments legal heirs certificate is must to get back the settlement

13. Must have Term Insurance to financially secure future of your dependants.. Conventional Insurance products can serve as Debt oriented investments and provide assured returns in the present falling interest regime with Tax benefits.

14. Don’t take any financial investment decisions EMOTIONALLY,  and also Avoid last minute tax saving investment decisions, plan well in advance..

15. MEDICLAIM is must (in spite of Group mediclaim coverage given at office) (After retirement there is no mediclaim coverage, after 50-55 years of age, it's very tough and costly to enter into mediclaim)

16. For your jewelry LOCKER, Only one lakh is payable by bank, if theft or fire happen at bank. Provided insurance done.

17. Like same way Government guaranteed only one lakh for your FD also. (Fixed deposits with Banks upto Rs. 1 lakh only are backed by deposit insurance)

18. Must know all Tax implications. You cannot avoid paying tax. But you can minimize by way of tax planning and investments..

19. All financial documents must be kept safely and keep family members informed of the same..

20. Financial investments must be followed through personal financial advisor..

21. Review your portfolio at every six month..

These are general suggestions, personal Finance and investment decisions depends upon case to case_

Have a Healthy and Wealthy Financial planning.

Tuesday, October 03, 2017

how i survived a heart attack when alone

. 
Heart Attack  -  how  i  survived a heart attack  when  alone
Classical symptoms of a heart attack include:

Severe chest pain (like squeezing, or a heaviness, or pressing) at the central or left part of the chest, lasting usually for at least 20 min. The pain may also radiate to the left upper arm, neck or jaw. The pain may feel like a heavy weight on your chest, a squeezing or tightness around the chest, or indigestion/heartburn. Mild chest pain or discomfort in the chest, rather than sudden, crushing pain, is the most common symptom of a heart attack. however, many people, in fact, have a heart attack with little to no chest pain. Symptoms can be quite different from person to person, may appear in mild or severe forms, and may appear and recede and reappear over several hours. Some people can suffer a heart attack after showing only mild symptoms, or no symptoms at all


Other two prominent sign are
·         Profuse sweating and a feeling of impending doom.
·         shortness of breath, nausea,
WHY HEART ATTACK OCCURES::
Most cases of heart attack are caused by a blood clot forming in one of the blood vessels responsible for supplying blood to the heart. The resulting blockage deprives the heart of oxygen-rich blood, causing damage to the heart muscle, which progressively dies. 
Taking an aspirin – the most commonly taken blood thinning medication in the world – during a heart attack improves survival. Taking an aspirin during a heart attack may help as it prevents the clot from getting bigger, giving the body a chance to break down the blood clot. It's always a good idea to keep yourself prepared for a heart attack even if you yourself have no heart issues. A single (80 mg) aspirin can mean the difference between life and death for many people and an aspirin takes up very little space in your wallet or purse.
Nitroglycerin (SORBITRATE TABLET) has not been shown to prevent heart attacks or improve survival substantially during an attack. It is more useful for patients with angina, an altogether different condition where patients experience chest pain or discomfort when exerting themselves.”
Angina results from an imbalance in the supply and demand for blood to the heart, but it is due to a narrowed blood vessel and not to a clot that needs to be broken down. Taking nitroglycerin during such a situation may temporarily expand the narrowed blood vessel and relieve discomfort.
Should you experience a heart attack – regardless of whether you’re alone or in the presence of others – the very first thing to do is to go to  the hospital, ask somebody  to  drive  you  there. You need specialized treatment to be delivered to you as quickly as possible in order to save your heart muscle.
Just know that aspirin and staying calm can and will save your life DONT PANIC
FIRST HOUR IS THE GOLDEN HOUR:
About half of heart attack deaths occur in the first hour, before the victim reaches a hospital.[3] Thus, if you experience a heart attack, it is essential to act quickly in order to maximize your chances of survival. Instead of waiting for the ambulance, go to hospital yourself. Taking aspirin/sorbitrate within the first five minutes of a heart attack, and receiving medical attention within the first hour, can mean the difference between life and death

MY HEART  ATTACK (19.04.2010.)

My wife has gone out to pickup  my  kids from  school bus stop.

No one is  at  home.

I was working on my computer since 9 Morning at my home office. Its about 1230 noon  time. Suddenly I fell down to the left side in the flloor from  the chair without  any warning.

There was a fullness  and  heavyness in  the heart  area and breathlessness, perspiration on forehead and hands.. I  went  to  the  nearby bedroom and lie down on  the  bed.

And I  took one sorbitrate tablet under the tongue.. And I called my family doctor s.k.chuahan. He told  me  to immediately go to hospital   and  take two more  sorbitrate at 5  minutes interval.

I tried  my wifes  mobile,  but she  has not picked up phone. Than I  called sayeed  bhai over mobile and asked  him to  come  immediately to under my home balcony .Told  him that I have to  go  to  hospital  immediately as  I feared something is  wrong..


I called my  neighbor nafis bhai  over phone to come immediately  with  his  son as I know  that I  cant  walk down the  stairs  from the third floor flat where I stay. They will  have  to carry  me down to  the  car.
By  that  time my  wife arrived with my son. I told  her to  drop  the car keys to sayeed bhai who  is standing below  our  balcony. I asked  sayeed  bhai over  phone to start my car and with the help of  nafis  bhai and his  son  I came down from  my third floor flat.

Sayeed bhai was nervous while driving the car.  I told him not to worry. I asked him  to take me to the  hospital gate through which only ambulance is allowed,  I know  where that gate is.Because i surveyed that gate before. I knew someday i may have this  problem.
Sayeed bhai  took me ,wife  and son to emergency gate of Escorts heart Institute, New Delhi  which is  just 15  minutes away  from my home.

IN  EMERGENCY ROOM:  Once inside emergency room , I  stopped  thinking myself and the doctors  took over.  They immediately gave me one handful of tablets of aspirin.
Than they  took me  to  the heart  center. While going, I saw my wife and  son in the verandah from my bed. I will  never  forget  the expression on  their faces. I asked  my wife to call my parents.
In the  heart  center, they  gave me emergency care to  recover me. I heard the nurse say "do something doctor, patient is slipping and in great pain".I looked towards my ECG monitor, i know whats happening and than I  just closed my eyes and started praying to Allah.. I heard the  attending doctor to  order a nurse to  push an emergency injection  and told  the nurses to count  to ten  and said I will come back. The nurses finally said I stabilized. Shilling experience of  life.
Than the main doctor Nishit Chandra came and told me that they will go for stenting one day later. They  cant do it immediately  as they have used an emergency injection. I said okay, do as you feel proper.

IN  HEART  CENTER: Before my coronary angiogram (20.04.2010.)
I was allotted a female nurse who stand s  near  me, never sits. They change duties but never leave me alone. I  have a bell also in the bed. With  oxygen mask and all the gadgets,  I cant talk. Just signal.
These people are very professional and very careful about human dignity, I loved this very much at the hospital. 


OPERATING ROOM (21.04.2010.)  MORNING
When they are taking me to the operation  room, I  saw my mother  ,brother  toufique and brother in law rajib who came all the way from Guwahati, Assam. I  told my mother that I will  be okay insha allah, dont worry. She caressed my hairs and did not say anything.  My  father already  had open heart surgery long time back, so  she is calm, but my wife , I can never forget her crying face all  my life.
The room is kept at a cool temperature because of the hi-tech equipment, television screens and monitoring equipment. I was shivering there because of cold temperature. I was asked to move over on to the x-ray table from my bed, which is quite narrow  and  cold. . 

I was lying face up on the x-ray table and awake throughout this procedure and I was asked to lie flat and keep still as possible. I saw all  around me only female nurses/technicians and the  main  doctor nishit Chandra. He asked me  how I am feeling with a smiling  face. I said okay. He said  it will hardly take 15 minutes. He asked  me why I am shivering,  I  said  maybe  because of the cold  inside the room. He made  me comfortable with words.
Than they started putting all gadgets on my body and Inserted  IV set etc.
I have seen it  in the hospital, they  always tell  me what they are going to do with me before doing anything.
The doctor told me  he is  going to  make very  small cut  in my right groin. And if that  area is not successful ,they will cut  in the left groin. Now I know why  they shaved my both groin area before coming to operation  theater.
The right groin area is washed and disinfected and then numbed with an injection of local anesthetic. A small incision is made at the right  leg entry site, and a short plastic tube (sheath) is inserted into my right  leg artery. The catheter is inserted through the sheath into my blood vessel and carefully threaded to my heart or coronary arteries. I was feeling like ant bites inside my veins.

Contrast liquid is put through the catheter to help my blood vessels and organs show up better. I felt a warm HOT FLASH as the liquid is put into the catheter. Also get a headache .Doctor said it will go  away, don’t worry.

A series of X-rays are taken once the dye is injected. The X-ray machine is moved around me and the bed is moved to obtain the correct position. The x-ray machine  moved close to my chest and  also moved towards my head and from side to side. This enables a complete picture of the heart, arteries and valves to be taken. I was also watching in the monitor my veins.
The doctor told me that I have three arteries  blocked and they  will have to use two stents. I asked him  to look  at my kidney also. He smiled  and told  me it  will cost Rs3000 more for the dye. I said go for it. He smiled and  said I am his  one of the most knowledgeable patient. They rarely get such educated patient.
Doctor went out to discuss with my family and take permission to do  it.

ANGIOPLASTY:
During angioplasty, the balloon is blown up inside the coronary artery, squashing fatty deposits and widening the narrowed artery. Usually the catheter also carries a short hollow tube made of stainless steel (called a stent) which opens out as the balloon is blown up and is left inside your artery. It is like a tiny piece of scaffolding that holds the artery open.I was implanted with two stent of the drug eluting variety.

The procedure took approximately 45 minutes, not 15 minutes as he said.

AFTER THE PROCEDURE AT  ICU
They kept me at the operation  theater waiting room for one hour for any emergency.Than they shifted  me to the ICU.
The  nurses keep a pressure dressing, sandbag,  in place over the cut site of  my right  leg to stop bleeding. The nurse will check my blood pressure,  temperature,groin area and feet pulses frequently. They check frequently for swelling  in the cut area. The female nurse who  stand near  me frequently check the groin area for any bleeding.I was bleeding a little. She wipes by her gloved hand  any blood.

Arteries are high-pressure systems. The risk for significant bleeding after an invasive procedure is high. I was lying there  with no  movement  of the leg for  12 hours as they nurse told me.. 

The  nurse who  is attending to me gave me a lot of  water to drink. An increased fluid intake promotes excretion of the contrast medium, reducing the risk of toxicity (particularly to the kidneys). She  gave  me a bedpan to  urinate  as I was urinating very  frequently. 

The nurse never allowed  me to move even to eat in the first day. The nurse will feed me tablets, coconut water, salad, fruits, oats always by her own  hand.   


RECOVERY ROOM:
The pictures shown are from  the recovery room. I was assigned one female  nurse .She  gave me medicines, fed  me food etc. She always stays outside the toilet when I am inside and never allowed me to lock from inside. The male nurse daily  gave  me a  shave.
I was also enjoying the TV also. They made me walk outside the room before discharging  me with the following advices.
After coming home: Five steps to follow  daily and regular  visit  after  every six months.
1. Maintaninng Blood pressure  by medicine  and salt  restriction.
2 .Maintaining Cholesterol by medicine and diet  control.
3. Maintaining  Acidity by medicine
4.Using blood thinner as prescribed
5. Maintaining fitness  by walking  daily in  the nearby garden.

MORAL OF THE STORY:
May  Allah don’t give such  health problem to anybody in this world . Its  a big drain on  money  and mental condition  of the whole  family.
Change your attitude towards life. Do not look for perfection in everything in life.I understood that my livelihood  cant be  taken by  anyone.  Put your  best  efforts in what you do and than leave the result for  GOD. I have firm belief in GOD.  
Go  for  health  check  up  If you are past the age of 30 ( once in six months recommended) 

SIX  WARNING  SIGNALS OF HIDDEN  HEART  PROBLEM:
1.Snoring,  2.Sexual problems  in men  &  women,  3.Gum  Problem,  4.Swelling  in leg  and  feet  5.Irregular  Heartbeat  6.Breathlessness  (Especially  while  taking Stairs or  walking)
PREVENTION IS BETTER THAN  CURE.
So please get  aware of this silent killer.




A chat with Dr. Devi Shetty, Narayana Hrudayalaya (Famous Heart Specialist) Bangalore


Qn1. What are the thumb rules for a layman to take care of his heart?
Ans:
1. Diet - Less of carbohydrate, more of protein, less oil
2. Exercise - Half an hour's walk, at least five days a week;
3. Quit smoking
4. Control weight
5. Control BP - Blood pressure and Sugar.


Q.What are the first aid steps to be taken on a heart attack?
Ans:Help the person into a sleeping position, place an aspirin tablet under the tongue with a sorbitrate tablet if available, and rush him to a coronary care unit, since the maximum casualty takes place within the first hour.
Q.How do you differentiate between pain caused by a heart attack and that caused due to gastric trouble?
Ans: Extremely difficult without ECG.

Q.Can a person help himself during a heart attack (Because we see a lot of forwarded e-mails on this)?
Ans: Yes. Lie down comfortably and put an aspirin tablet of any description  and 
sorbitrate tablet  under the tongue and ask someone to take you to the nearest coronary care unit without any delay and do not wait for the ambulance since most of the time, the ambulance does not turn up.

Q.What are the things one needs to take care of after a heart operation?
Ans : Diet, exercise, drugs on time , Control cholesterol, BP, weight.
 go for health checkups.
Glyceryl trinitrate (GTN)
GTN comes as tablets or sprays. You take a dose under your tongue as required when your angina pain develops. GTN is absorbed quickly into the bloodstream, from under the tongue. A dose works to ease the pain within a minute or so.You should always carry your GTN spray or tablets with you.
How long people with chest pain should wait before calling an ambulance is a question familiar to general practitioners and emergency doctors.
The British Heart Foundation advises patients with known ischaemic heart disease that chest pain that lasts more than 15 minutes is probably a heart attack.2 Within this time patients are advised to use their glyceryl trinitrate (GTN) spray three times at five minute intervals before calling an ambulance.
https://myheartsisters.org/2013/08/19/nitroglycerin/
http://www.netdoctor.co.uk/medicines/heart-and-blood/a6820/gtn-sublingual-tablets-glyceryl-trinitrate/


Friday, August 25, 2017

How to develope MLSS in aeration tanks of STP


How to develope MLSS in aeration tanks of  STP

1)Add two tanker (10,000 liter) of activated sludge water  having seed culture (microbes) from settling tank of  existing similar plant from similar industry located anywhere nearby to the aeration tanks of your STP, so that microbiology develops in your aeration tanks. Adjust pH of aeration tank. If you can get domestic waste activated sludge from a working STP plant, it will also work.
Now put the aeration tank to operation in continuous mode by feeding continuously with wastewater with sludge re-circulation as per design re-circulation rate but without any sludge wasting till the biomass concentration reaches to design MLSS. During this phase collect and analyze MLSS samples at every 12 hour interval.
Once the design MLSS concentration is achieved start sludge wasting as per design.

2)  The better of many procedures will be as follows.
1. Fill the aeration tank with water which is not having a TDS of more than some 200 mg/l.
2. Dump cowdung at 10 % of the weight of the water in the tank.
3. Start the aerator and allow aeration for 48 hours.
4. Stop the aerator by about 8 AM on day 4 and allow settling in aeration tank itself for three hours.
5. Syphon out the top supernatant for 10 % of volume.
6. Repeat steps 2 to 5 for 5 to 6 cycles.
7. By this time, bacterial mass would establish.
8. Repeat steps 2 to 5 for 3 to 4 cycles with 5 % cowdung and 5 % raw effluent instead of full 10 % of cowdung.
9. Add micro nutrients as in attachment every the cowdung / effluent mix is added.
10. At this stage verify the raw effluent COD and settled supernatant COD.
11. Let us know the COD values at this stage and based on this we can proceed further.
It is usual that it takes about 3 months to establish a culture like this method. What happens in this method is the bacteria are allowed to go through a mutation process and also grow by retaining its "genetic memory" in its DNA. This way, the acclimatised bacteria once grown will never get knocked out.
There are other methods whereby people buy "enzymes" and start using or use "ready made" dried cultures. These will give excellent results to start with but they are from a different "gener" and will collapse very quickly in case of shock loads.
Thanks & Regards
Dr. S.Sundaramoorthy
Technical Advisor (ex-Engineering Director of Chennai Metropolitan Water Supply and Sewerage Board)

3) For a project this size, the best way is to get 2 tankers of activated sludge from a nearby municipal treatment plant. This is also the cheapest and quickest way. Everything else will take considerable amount of time. The second best alternative is to buy bacterial culture and add to the aeration tank.
They will eventually mutate and grow in size but you will need to replenish them with the same culture at regular intervals. Try Sudershan Chemicals of PUNE for bacterial culture.
Regards,
Taral Kumar
Executive Director
Akar Impex Pvt. Ltd.
Noida, Uttar Pradesh

4)
• Cow dung is the starter for development of MLSS in aeration tank. 
• Take fresh cow dung. 
• Remove the grasses or any other foreign material.
• Prepare slurry in the separate tank.
• Add cow dung into aeration tank filled with effluent.
• Quantity of cow dung is around 3kg/m3 (as such basis).
• Keep the aeration on for 24 hr.
• Add urea & DAP to support the growth.
• Slowly take effluent intro aeration tank after 4 to 5 days.
If you need any further information then please free to contact us.
With regards,
Prof. R. V Saraf