- Not enough water is available to flush out human waste.
- Stickiness in the stool causes it to stick to pipes of drains and water cannot push it further.
- Drains overflow and the dirty water comes on the roads.
- Drain water enters houses during rains.
- Water from the drains mixes with drinking water.
- Water from these drains also causes many ailments that contain harmful pathogens.
- Drains act as a breeding ground for a lot of mosquitoes and insects, bandicoots, rodents, and such pests.
- The municipal department is not responsive to complaints.
- De-silting of the drains is not done by the department regularly.
- When the drains are cleared, debris is put on the side of the road.
- Many manholes are not properly covered because of thefts.
- For cleaning main drainage pipes often minors are employed, many deaths are reported due to poisonous gases those emit from the sludge in the pipes.
- Many drains are open.
- Open drains results in a bad stink in the area.
The first
cause is the most important in all the above-mentioned causes for
failure of drainage system. Basic theory behind this system to be
successful is that, copious quantity of water is required to flush
out waste into the main drainage pipes. For that, minimum 36 liters
of water must gush out within 30 seconds to push the stool away into
the drainage pipe from the toilet boot. A human is normally expected
to visit toilet at least two or in some cases three times in a day to
cleanse. That comes to about 100 liters of water for flushing on an
average per head. In addition to that water is required to do many
other daily needs such as washing, cleaning pots, bath, cleaning
floors, cleaning cars, gardening, cooking and drinking. In all 200
liters of water is recommended per head per day for comfortable
cleansing and other daily needs. Whereas at present BMC is able to
give only meager 40 liters of water per head per day.
To
understand this problem we divided system in three parts. First part
in the toilet room, second part in the building premises, and third
part is in the main drainage pipe.
First
part - here we see that stool is deposited in the boot of the toilet
and after finishing the cleansing washing of body part is done after
that flushing is expected to push the feces into the drainage pipe of
the building. If this happens properly, it is noticed that first part
has worked well. However, many a times due to sticky nature of the
stool it is not cleansed properly. At that time, special human
efforts are required to remove it from the boot. That needs
additional water to do that and in addition to it some scratching of
boot. That could be anywhere around 5 to ten liters per stool. Adding
that comes to total water requirement to around 50 to 56 liters.
Total daily need of water for flushing comes to about 145 liters per
head per day. This observation shows that out of total water
requirement of a person more than half of it goes in flushing. This
is required to make this drainage system to function successfully.
However, since BMC is supplying only about 40 liters of water per
person. Our drainage system cannot function successfully. This has
led the observers to think of another more suitable system to dispose
off stool.
Provided
first operation is completed satisfactorily; in second operation that
stool along with accompanying flushing water passes with much ease
through the building's drainage pipes down into the chamber called
inspection chamber. There it lands with mush momentum and is carried
into the ground level drainage pipe. Here the stool is stuck up due
to reduction in speed of flushing water. Due to sticky nature of
human waste, it stays holding to the walls of that pipe. Flushing
water and other water keeps flowing passing over it. As a result,
this human waste continues to accumulate in these pipes who are
generally laid down in horizontal position. Process of decomposition
may continue in that place accompanying other waste that is pushed
through the same drainage pipes. Here the problem begins to show up.
Often we all know that these drainage pipes need to be cleaned
occasionally by physical efforts. This cleaning is not done always
properly. This accumulated muck carries with it all types of pathogen
according to what diseases people in the premises suffer from. During
its remaining in the pipes many types of objectionable insects, such
as mosquitoes, flies, cockroach, continue to breed on the available
protein and carbohydrates. Gases emitting from this muck flow through
went pipes usually connected to the inspection chamber and come in
outer atmosphere. These gases contain many pathogens along with the
vapor that it contains. Eventually, these many dangerous pathogens
spread in the building and surrounding areas. Eventually, they infect
people in the vicinity. So long as, this drainage system continues
spread of these multitude of pathogens will continue to affect health
of people of this city. It is this cause, for which we have to find
out a more safe alternative system to dispose off sewerage of
residential buildings.
Drainage
system has third segment. The main drainage system is supposed to
carry away sewerage to its ultimate destination. It is largely
observed that most muck remains in the pipes under the buildings but
some may eventually get pushed in the main drainage pipes those are
normally put under ground our streets. Since the total water input in
the system is miserably low, problem of pushing this muck further
continues. We know from repeatedly our BMC has to do cleansing of
these pipes with mainly human efforts since most machines have
limited capacity to do this work. I have noticed that minors are
employed to do this work. It is a crime to appoint this boys but our
BMC is doing that crime under very nose of police. Nobody bothers but
we have to take a serious note of this practice also while discussing
this problem.
Actually,
the very purpose of using this drainage system is to allow our waste
to flow easily through all these pipes and reach the end without
hassles. In reality, we see that it does not happen. The only way to
make this system work efficiently is to supply enough or enormous
quantity of water to push the stool and other waste through these all
pipes easily to the end. The problem is that our BMC is not in
position to acquire reasonable quantity of water to fulfill this
requirement. As a result, we have to find out other more efficient
and least bothering system to dispose off house waste sewerage;
preferably maintenance free.
Some come
with suggestion of septic tank. Septic tank has been found to be
worse than drainage system. The spread of pathogens due to septic
tank is more than what drainage system causes. Therefore, that is not
acceptable to our city. Moreover, that system can work for smaller
population. The type of population our city is managing, septic tank
is no solution.
Given
here are some of the complains about Septic Tank
- Septic Tank overflows in the surrounding places creating nuisance.
- Since decomposition in Septic Tank is done by anaerobic microbes stink spreads in the surrounding areas.
- Septic Tank gives out fumes those contain pathogen of many diseases, which may be people who use it are suffering.
- Many pests such as cockroach, flies, mosquitoes and more, breed in and around Septic Tanks.
- A very regular inspection and care is essential to keep this system in good functioning order.
- The silt removed from septic Tank is a hazardous material and disposal of that is in itself a problem.
- Capacity to manage sewer is limited and so not recommended for big buildings
Third
option available is soak pit. This system is in use since many years
successfully in most rural areas and even in the city in most gaothan
areas, this system has been in use since the early times. In this
system, working is very simple. It is based on nature's power to
destroy pathogen by the power of microbes such as actynomycitis, many
fungi and other innumerable microbe. The system is the most
economical and needs least after care. A tank like structure is made
at the ground level with its top slightly above ground level. This
structure has all its four sides made of proper walling. Its bottom
is left open to ground. This structure is called Soak Pit. Top is
having one or two manholes in case any inspection is needed. The
system functions very naturally. Stool with its accompanying water
enter into the soak pit. It is dumped in the Soak pit and it lands at
the bottom right on the ground below. Immediately, microbes in the
ground gradually begin to consume the potent material such as
proteins, starch, sugars and fatty acids along with the pathogen if
any. Within 3 to 4 days, this waste is converted in to black soil.
Our ambient temperature is around 30 degrees Celsius; this helps
expedite this process of destroying human waste early. Water
accompanying the stool and other water from other uses also comes in
the soak pit and eventually, absorbed into the ground.
Water
accompanying stool is having B.O.D. value of around 200. It is
oxidized by oxygen from the air in the pit as well as in the ground.
Experimental tests have shown that at distance of around 60 feet and
more this value comes to 20 B.O.D. whereas, water of the order of 50
B.O.D. is allowed for drinking purpose as well as cooking. This
adequately shows that this water from the soak pit also helps
recharge water to keep water table at required level.
Given here are some advantages of having soak pit
- Minimum cost to build it.
- Maintenance cost is negligible.
- Helps recharge water in ground.
- All disadvantages due to Drainage system and Septic Tank are eliminated.
- Very environment friendly System it is.
- BMC or government has no any expense. All cost is born by Builder of the premises.
This paper is sent to our CM Devendra Phadnavis for further action to
resolve our health problem.
Below given is schematic view of Soak pit.
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my Email ID given below,
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reckon,
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