How to treat your #Sewage water, #waste #water, Bad smell effectively, economically & #eco friendly.

We are sewage water treatment organization in Goa. We do supply New STP plant, Repair Old STP Plants, Cooling Towers, Supply treatment  Reagent, Water softening chemicals etc. Our main objective is treat waste  clean and green environment.

Sewage  water is the water that emerges after fresh water is used by human beings for domestic, commercial use. By and large, it is fresh water that is used for a variety of domestic uses such as washing, bathing & flushing toilets. Washing involves the washing of utensils used in cooking, washing vegetables and other food items, bathing, washing hands, washing clothes.

The water that emerges after these uses contains, vegetable matter, oils used in cooking, oil in hair, detergents, dirt from floors that have been washed , soap used in bathing along with oils/greases washed from the human body. This water is referred to as “ Grey Water” or sullage.

 Ultimate purpose of wastewater treatment is to purify  waste water, sewage water and/or household waste water. Waste water treatment totally eliminates all harmful bacteria, particularly the most difficult E-coli, which is the cause for a large variety of water-borne disease particularly in children of developing nations.

The aerobic process  is one where the microbes which clean up the sewage need to be supplied with air(oxygen) to function and multiply so that the sewage is ‘cleaned up’. An anaerobic process is one where a different kind of bacteria comes into action. It is a bacteria/microbe that does not need air and operates in an atmosphere without air ( hence the term ‘anaerobic’).This kind of bacteria produces methane and in the waste/environmental engineering industry, they are called “ methanogens”.

Mostly, anaerobic treatment is usually followed by the aerobic process and this combination is used where the waste water has very high values of BOD and COD. In such situations, the anaerobic system reduces the BOD & COD down to a level where the aerobic process completes the job of reducing it down to the levels where a tertiary treatment stage can do the final ‘polishing’ of the treated sewage as stated above.

As per standards laid down by the CPHEEO (Central Public Health Environmental & Engineering Organisation), the fresh water consumption per day per person should be between 135 to 150 litres per day. It is officially expressed as “litres per capita daily” (lpcd). By and large public water supply and sewerage bodies/authorities all across the country use the former figure to work out probable water consumption. 

Waste water contains all the dissolved minerals present in the fresh water that was used and which became waste water as well as all the other contaminants mentioned above. These are proteins, carbohydrates, oils & fats. These contaminants are degradable and use up oxygen in the degradation process.

Therefore, these are measured in terms of their demand for oxygen which can be established by certain tests in a laboratory. This is called Bio Degradable Oxygen demand(BOD). Some chemicals which also contaminate the water during the process of domestic use also degrade and use oxygen and the test done to establish this demand which is called Chemical Oxgen demand (COD).

Typically a domestic sewage would contain approximately 300 to 450 mg/litre of BOD and COD on an average. Sewage also contains coliform bacteria (e coli) which is harmful to human beings if water containing such bacteria is consumed(drunk). E coli is bacteria that thrives in the intestines of warm blooded creatures such as humans, animals and birds.

Another feature of sewage is the high level of Total Suspended Solids (TSS). This is what gives the sewage a black colour ,hence the name “ black water”. If sewage is allowed to turn septic, it then also has a strong, unpleasant odour. 

Discharging untreated sewage into any drains other than an underground sewerage system, or into open land , is an offence and invites prosecution under the laws of all Pollution Control Boards in the country.

Sewage must necessarily be treated correctly and then re-used/re-cycled for various uses that do not need potable water quality. Recycling/re-using treated sewage can reduce fresh water requirements very substantially, by almost 50-60%.

In this  scenario we help Housing Societies, Residential complexes, Bunglows, Hotels, Resorts Industries to treat the water for reusable use.

For more details please mail to nyn.goa@gmail.com