Treatment FAQ

what happens to our poop at the waste treatment plant

by Angeline Weimann Published 3 years ago Updated 2 years ago

From the toilet, your poop flows through the city’s sewage system along with all the water that drains from our sinks, showers and streets. From there, it goes to a wastewater treatment plant. The water at the top of the tank is skimmed off and sent off to be processed.

During primary treatment, water moves on to sedimenta- tion tanks where it's undis- turbed for a few hours. Solids that sink are scraped from the bottom of the tank and removed. Grease and oils that float to the top are removed with large rotating skimmers.

Full Answer

What happens to the trash in a sewage treatment plant?

Jan 01, 2020 · What happens to poop at the water treatment plant? Most sewer systems operate by gravity flow, which pulls wastewater toward the treatment plant. After screening, the wastewater enters a grit chamber to remove heavier solids such as rocks, sand, gravel, and other materials, which are also sent to the landfill for disposal.

What happens to your poop when you clean your tank?

Jan 25, 2020 · This stage allows the solids to settle at the bottom of the tank. The water at the top of the tank is skimmed off and sent off to be processed. Your poop remains in …

What happens to your poop?

Dec 14, 2020 · This step also forces grit-sized waste, like sand and coffee grounds, to settle and allows the grits to be pumped out to landfills. The next step is moving from aeration tanks to sedimentation tanks to remove sludge and scum. Here, the sludge (a.k.a. poo) settles to the bottom of the tank allowing it to be removed.

How does our poop get clean?

What happens to poop at the water treatment plant? Most sewer systems operate by gravity flow, which pulls wastewater toward the treatment plant . After screening, the wastewater enters a grit chamber to remove heavier solids such as rocks, sand, gravel, and other materials, which are also sent to the landfill for disposal.

What happens to poop in a wastewater treatment plant?

Chemicals are added to kill as many germs as possible. Then the treated water is released into a local river or even the ocean. If you live near the coast your treated sewage probably goes into the ocean. The treated sewage is cleaned to make sure that it does not cause environmental problems.Aug 22, 2017

Where does human waste go after a sewage treatment plant?

The treated wastewater is released into local waterways where it's used again for any number of purposes, such as supplying drinking water, irrigating crops, and sustaining aquatic life.

What happens to the poop and food removed from the wastewater?

From the toilet, your poop flows through the city's sewage system along with all the water that drains from our sinks, showers and streets. From there, it goes to a wastewater treatment plant.Jan 25, 2020

What happens to treated human waste?

The most common misconception is that human waste is being directly applied to fields. However, the waste has been treated at a wastewater treatment plant, and then treated again in our digesters before being applied to farm grounds.Apr 18, 2018

What happens to poop in a septic tank?

The decomposition process in the tank slows down, leading to blockage and overflow. Over time, soil, sludge, excrement and solid waste build up, as a result, the solid waste starts to build up. This process gets worse and finally the septic system gives up and backs up completely.

How long does faeces take to decompose?

The math pretty much stinks: Humans produce up to a pound of poop per day and human feces take about a year to biodegrade. Humans produce up to a pound of poop per day and human feces take about a year to biodegrade.Jun 5, 2019

Do females defecate?

We'll give you the TL;DR first: yes, of course, girls poop. Since they have the same number of chromosomes and basically the same digestive system as guys, male and female humans experience the same bowel movements. So, if you count pooping among your bodily functions, you can assume the women around you also poop.Oct 5, 2021

Does poop break down in water?

Yes, poop will almost always dissolve in your toilet. Feces are water-soluble, so they break on their own over time. On average, you'll have to wait about an hour before the clog dissolves on its own.Nov 16, 2021

Does poop go into the ocean?

IMPERIAL BEACH (KUSI) – A problem that has been going on for decades. Mexico has once again released raw sewage, more easily known as human poop, into the ocean, contaminating and closing the water in Imperial Beach.Aug 9, 2021

Is human poop biodegradable?

Human poop, which takes about a year to biodegrade, can be an environmental hazard. It can befoul trails and campsites, and if it's left too close to streams or watersheds, it can contaminate groundwater.Apr 1, 2011

What is a ghost poop?

Dr. Islam gives us three definitions of the elusive ghost poop: 1) the urge to poop that ends up only being gas, 2) a poop so smooth that it went down the drain before you could see it, and lastly 3) a visible poop in the toilet, but zero poop marks on your toilet paper after wiping.Sep 20, 2021

Does human poop make good fertilizer?

Human urine and faecal matter are a rich source of essential plant nutrients. Historically, human excreta, 'nightsoils', were collected from towns and villages and spread in raw or composted form on fields in the surrounding farmland.May 15, 2015

Big Pipes

About 70 feet under our sidewalks, there’s a system of tunnels large enough for a semi truck to barrel through. Whatever water goes down the drain in your home, workplace or favorite restaurant first travels through private pipes in the privately owned buildings.

Wastewater Epicenter

Now we know how wastewater gets to the treatment plant, but then what? Well, it gets cleaned, silly! Here’s the process:

Final FAQs

Basically anything other than poop and toilet paper. But a reigning enemy of the sewage system is “flushable” wipes. Even if they’re labeled “disposable”, make-up removing wipes and baby wipes wreak havoc when flushed.

The Tour Comes To A Close

We very much hope you’ve enjoyed this field trip through a wastewater treatment plant. We’ve learned how a poop travels from your toilet bowl to a treatment plant. We’ve also learned how our wastewater facilities clean everything from car tires to tiny microorganisms. Final thoughts: remember not to flush “disposable” wipes.

How does pretreatment work?

The pretreatment removes all trash and debris from the sewage water through a bar screen. Here common items such as rags, sanitary napkins or sticks are collected and sent to a landfill. The water then passes through a grit chamber to collect sand, dirt and other inorganic solids.

Is biosolid fertilizer good for soil?

Naturally derived fertilizers are much healthier for soils in comparison to synthetic fertilizers, which can deplete soils of essential nutrients and cause infertility overtime. Biosolids are an untapped energy and nutrient source that will continue to grow as our communities grow.

How are biosolids created?

Biosolids are created through the treatment of wastewater generated from sewage treatment facilities , which involves a number of physical, chemical and biological processes. Here’s a quick rundown of what happens to the waste water after you flush your toilet, run the disposal or drain your bath:

What is secondary treatment?

The secondary treatment occurs in aeration tanks. Oxygen is pumped into the water to encourage active bacteria, called activated sludge, to breakdown incoming waste solids and dissolved organic matter that escaped the scrapping process. The water then flows into clarifying tanks where the activated sludge settles out and is either returned to ...

Why is oxygen pumped into water?

Oxygen is pumped into the water to encourage active bacteria, called activated sludge, to breakdown incoming waste solids and dissolved organic matter that escaped the scrapping process. The water then flows into clarifying tanks where the activated sludge settles out and is either returned to the aeration tank to keep the activated sludge process moving, or goes to the digester tanks for processing. The secondary process removes 80-90% of human waste from the water as well as a significant amount of toxic chemicals.

What is biosolid fertilizer?

Biosolids are packed with organic matter, improving soil structure and increasing nutrient utilization and water retention. Our fertilizer contains essential plant nutrients, such as nitrogen and phosphorous, along with important trace metals, that are slowly broken down and released into the soil.

What is the purpose of chlorine in water?

This includes the addition of chemicals to remove phosphorous and help separate any remaining sludge. Chlorine is added to kill any harmful bacteria, and then the water is moved through filters and discharged back to the environment into local waterways.

6 You're Creating Massive Clumps Of Grease That Can Destroy Everything

First off, good news: I'm not going to tell you to give up toilet paper -- not that you would anyway. I mean, sure, huge swaths of the world use just water, which kills fewer trees and actually gets your butthole clean -- but our sewage system can handle toilet paper just fine. As for any other product labeled "flushable," well ...

5 You Wouldn't Believe What We Find

So, what does sewage look like once it reaches us? It's not a bunch of turds floating about in a stream, if that's what you're picturing. Solid waste breaks up pretty quickly in the sewer lines. By the time it gets to us, it's this uniform gray-green stenchwater with bits of toilet paper and other foreign bodies scattered around.

4 Yes, Wastewater Scientists Get Covered In Poop

We shouldn't. We're not trudging through the sewers every day -- that job's reserved for sewer workers and for video game protagonists seeking entry into secret lairs. But a poop shower happens to everyone, eventually. We call this each employee's baptism.

3 Please Stop Flushing Your Damn Pills

Lots of people flush drugs down their toilet, and I'm not even talking about the bag of cocaine that you hurriedly flush right before police kick down your door.

2 Your Poo Is Worth More Than Gold

Maybe you've heard about recent plans to extract precious metals from sewage. Gold and silver grabbed the headlines ("Your poop is full of gold!" websites told us, misleadingly ), but there's also talk of retrieving technologically important metals like copper and vanadium that come in stuff like shampoo.

1 We Can Never Shut Down, No Matter What Goes Wrong

Every so often, some factory pours a barrel of pure cancer right into the drains. "This'll show Captain Planet and the Planeteers!" they sneer, and this kind of illegal dumping does in fact screw up the treatment process.

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What happens when you flush a toilet?

So let’s start with what happens with the flush of a toilet. Everything that’s left your body, any tissue or paper you’ve used and the water in the bowl, leave your home and enter the city’s sewers. There it joins other wastewater, and in the case of London, rainwater, and is carried to a sewage treatment plant like the one at Crossness.

How does THP work?

THP first boils sludge under high pressure, before rapidly decompressing it. The combination of these two steps sterilizes the sludge, and it also makes it easier to break down. The THP at Crossness is an impressive sight – several towering steel silos, radiating heat.

Why do bacteria need oxygen?

Because these bacteria rely on oxygen, air is added at the same time, allowing them to thrive and multiply. Once they’ve broken down all of the pathogens, the bacteria have done their job. The water is moved to another tank where is it filtered and disinfected, and then, it’s ready to be pumped back into our homes.

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