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Wastewater Treatment at Newtown Creek Wastewater Resource Recovery Facility (WRRF) Shri Sewgobind Facility Manager Newtown Creek WRRF October 18, 2019

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Page 1: Wastewater Treatment at Newtown Creek …...Wastewater Treatment at Newtown Creek Wastewater Resource Recovery Facility (WRRF) Shri Sewgobind –Facility Manager Newtown Creek WRRF

Wastewater Treatment at Newtown Creek

Wastewater Resource Recovery Facility (WRRF)

Shri Sewgobind – Facility Manager

Newtown Creek WRRF

October 18, 2019

Page 2: Wastewater Treatment at Newtown Creek …...Wastewater Treatment at Newtown Creek Wastewater Resource Recovery Facility (WRRF) Shri Sewgobind –Facility Manager Newtown Creek WRRF

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14 WRRFs Across 5 Boroughs

Total Dry Weather

Capacity:

New York City:

1.8 bgd

Newtown Creek:

310 mgd

Page 3: Wastewater Treatment at Newtown Creek …...Wastewater Treatment at Newtown Creek Wastewater Resource Recovery Facility (WRRF) Shri Sewgobind –Facility Manager Newtown Creek WRRF

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Wastewater Treatment Process

Dry Weather: Wet Weather (Combined Sewer Overflow):

To WRRF To WRRF

Page 4: Wastewater Treatment at Newtown Creek …...Wastewater Treatment at Newtown Creek Wastewater Resource Recovery Facility (WRRF) Shri Sewgobind –Facility Manager Newtown Creek WRRF

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Step 1: Screening

Gravity pushes sewage through metal bars, spaced 1-inch

apart.

Bar screens help remove large debris (cans, bottles, rocks,

sticks, leaves, and more).

Page 5: Wastewater Treatment at Newtown Creek …...Wastewater Treatment at Newtown Creek Wastewater Resource Recovery Facility (WRRF) Shri Sewgobind –Facility Manager Newtown Creek WRRF

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Step 2: Main Sewage Pumps

ng

400 MGD

400 MGD

700 MGD

Page 6: Wastewater Treatment at Newtown Creek …...Wastewater Treatment at Newtown Creek Wastewater Resource Recovery Facility (WRRF) Shri Sewgobind –Facility Manager Newtown Creek WRRF

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Primary sludge to grit removal

Primary Effluent to Secondary Treatment

Scum trough to scum removal

Primary settling allows solids to settle

on the bottom and floatables (such as

plastic) to be removed from the waste

stream.

Step 3: Primary Treatment (most WRRFs)

Page 7: Wastewater Treatment at Newtown Creek …...Wastewater Treatment at Newtown Creek Wastewater Resource Recovery Facility (WRRF) Shri Sewgobind –Facility Manager Newtown Creek WRRF

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Step 3: Primary Treatment

Sewage flows into large tanks where

it slows down and begins to settle.

Gravity and specific gravity provide

treatment.

Heavy items, like sand and gravel,

settle out to the bottom of the tank

(called grit).

Lighter items with a specific gravity

lower than water, like cooking oils

and grease, float to the top of the

tank (called floatables).

Both the grit and floatables are

removed and sent to a landfill.

Page 8: Wastewater Treatment at Newtown Creek …...Wastewater Treatment at Newtown Creek Wastewater Resource Recovery Facility (WRRF) Shri Sewgobind –Facility Manager Newtown Creek WRRF

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Step 4: Aeration

Naturally occurring bacteria eat the organic material in the

sewage. We add air to help these aerobic bacteria eat

more and grow faster.

O2 O2

Page 9: Wastewater Treatment at Newtown Creek …...Wastewater Treatment at Newtown Creek Wastewater Resource Recovery Facility (WRRF) Shri Sewgobind –Facility Manager Newtown Creek WRRF

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Step 5: Final Settling

The sewage slows down again

in large tanks – gravity settles

the heavy bacteria to the

bottom.

Now, the settled bacteria and

remaining water go separate

ways.

Flocced bacteria under

a microscope

Page 10: Wastewater Treatment at Newtown Creek …...Wastewater Treatment at Newtown Creek Wastewater Resource Recovery Facility (WRRF) Shri Sewgobind –Facility Manager Newtown Creek WRRF

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Step 6: Disinfection

The water flows next into a

chlorination tank.

Sodium hypochlorite (NaClO),

same as bleach, is added to the

water to kill any remaining

bacteria.

This chemical process is called

oxidation. The added chemical

has one sodium (Na) atom, one

chlorine (Cl) atom, and one

oxygen (O) atom.

Page 11: Wastewater Treatment at Newtown Creek …...Wastewater Treatment at Newtown Creek Wastewater Resource Recovery Facility (WRRF) Shri Sewgobind –Facility Manager Newtown Creek WRRF

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All odorous air is passed through virgin

carbon adsorbers that filter out any odors

before being discharged through tall stacks.

Odor Control

Page 12: Wastewater Treatment at Newtown Creek …...Wastewater Treatment at Newtown Creek Wastewater Resource Recovery Facility (WRRF) Shri Sewgobind –Facility Manager Newtown Creek WRRF

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Sludge Transport

Sludge from eggs is

transported via marine vessel

to WRRFs with dewatering

for further processing into

biosolids.

New sludge dock and

3 new motorized barges

Page 13: Wastewater Treatment at Newtown Creek …...Wastewater Treatment at Newtown Creek Wastewater Resource Recovery Facility (WRRF) Shri Sewgobind –Facility Manager Newtown Creek WRRF

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Safety Briefing

Before Tours

Click to add text