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Sewage Treatment Plants and waste water treatment plants
In centralized sewage water treatment plants, volume of the sewage becomes very large and the distance of conveyance, as the sewage treatment plants are generally located outside of the cities, is very long. Domestic waste water treatment system of any city consists of collection, treatment and disposal. In conventional centralized sewage treatment plants, about 80% of the cost is accounted for the collection. Our water treatment plants, waste water treatment plants, sewage water treatment plants have the following advantages:
No surplus sludge, Increase capacity and Treat waste water treatment of different concentrations.
We also design effluent treatment and sewage treatment plants and water pollution control related equipments. We are Designing and manufacturing fixed and floating aerators, Stirrers, Flocculators, Mechanised Bar Screen etc. for sewage treatment plant and wastewater treatment plant.
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| Salient
features |
Applications |
| Low Retention
Time |
Raw Water
Clarification |
| Maintenance
Free |
Oil Separation |
No Moving
Parts
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Metal
Hydroxide |
| Online
cleaning |
Chromate
Reduction |
| Excellent
Clarification |
Phosphate
Removal |
| Stable
Flow |
Iron Removal |
| Minimum
Carry over |
Effluent
Clarification |
| Quick
Start & Shut down |
Secondary
Clarification |
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Solid - liquid separation using gravity is a theory
of contradiction between fluid flow and gravity. Inclined
plate Separation is a unique clarification arrangement
in which solids are removed from the waste water by
directing the fluid between a series of inclined plates
resulting in a large surface area in a small space.
Zion enviro offers inclined plate separators solid-liquid
separation as well as Oil-Water separation by ingeniously
reversing the fluid flow in the same system.
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| Principle of operation |
| Feed water enters
the integrated flash mixer cum flocculator.
Coagulant chemicals are added by metering pumps.
Flocculated water enters the feed and diverts
to the bottom section of the plate separator.
As the fluid rises through plates the flocculated
particles are separated by gravity on the plates
and slide on the smooth surface to the sludge
collection cone at the bottom. The clear water
from suspended matters exits at the top. The
collected sludge from the bottom will be discharged
periodically. |
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SOLIDS CONTACT RECIRCULATION CLARIFIER |
Zion Enviro's Solids
Contact Recirculation Clarifier is a high rate
system solids contact principle of combining
coagulation, flocculation and chlorination in
a single unit. It takes minimum time and space
while producing highest quality.
Zion Enviro's Solids contact Recirculation Clarifiers
are extensively used for Coagulation/clarification
of water and waste water containing suspended
solids, colour and impurities. It is also used
for water softening using cold lime soda process. |
| Features |
- Extended sludge contact, adjustable sludge
recirculation.
- Low solids carry over.
- Special thickening picket for concentrating
settled sludge.
- Easy to operate and low maintenance.
- Short start-up time.
- Rapid and complete chemical reaction.
- Dense and easily settable concentrated
sludge.
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| PRINCIPLE OF OPERATION |
| Zion Enviro's Solids
type contact carries out coagulation, flocculation
and clarification in a single unit. The feed
is pumped in to the contact in a Zone at the
center clarification. Coagulant and flocculent
chemical dosed at this point by positive displacement
pump. The feed is intimately mixed in zone where
sludge formed earlier is re-circulated to provide
rapid coagulation and flocculation. A
separate variable speed impeller is in the
solids contact zone independent of this solids
contact. The rapid mixing of the impeller
results in formation of dense particles and
sludge. From the mixing zone the water enters
into the external settling room and particles
settle rapidly to the bottom sludge bed.
Multi blade sludge scrapper arms are provided
to carry sludge to the central from where
it is easily drawn out as highly concentrated
slurry. The clarified water enters the top
of the recirculation and flows out of the
system through the launders.
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