Turning sludge to biosolids to create maximum value and resources

A range of processes are required to remove potential health risks, remove water and reduce the volume and weight of sludge to improve the costs and options for disposal. With the correct treatment, sewage sludge can be transformed from what was considered a waste into a valuable resource and product, also known as biosolids or bioresources. The biosolids are produced after wastewater goes through physical, chemical and biological processes to clean the wastewater and remove the solids. Biosolids can be used as an alternative to manufactured fertilisers to help play a role in soil quality and fertility improvements, as well as stimulate plant growth. As well as the potential production of an agricultural fertiliser, industrial and municipal sludge can be used to produce a biogas for power generation. Depending on the country, biosolids must meet strict regulation and quality standards before being applied to land.

Rural wastewater redevelopment to restore Egypt’s Lake Qarun

Rural wastewater redevelopment to restore Egypt’s Lake Qarun

  • By Aquatech
  • |
  • 03-06-2020

A multi-million euro collaboration bridging Canada, Europe and North Africa hopes to reduce pollution and return Lake Qarun to its glory.

“Methane cracking” to unlock hydrogen + graphite from Oz wastewater

“Methane cracking” to unlock hydrogen + graphite from Oz wastewater

  • By Aquatech
  • |
  • 02-06-2020

A three-year partnership between Water Corporation and the Hazer group will see hydrogen and synthetic graphite recovered from wastewater in Australia.

Sludge, biosolids & bioresources: Our essential guide

Sludge, biosolids & bioresources: Our essential guide

  • By Aquatech
  • |
  • 28-05-2020

Check out our latest online guide that addresses what are sludge and biosolids, outlines the wastewater treatment process and potential of generating fertilisers and energy.

The Ganges shows increased biodiversity after lockdown

The Ganges shows increased biodiversity after lockdown

  • By Aquatech
  • |
  • 18-05-2020

Following the Covid-19 lockdown, there are signs the holy river is being rejuvenated with increased signs of biodiversity.

New policy drives wastewater reuse in Abu Dhabi

New policy drives wastewater reuse in Abu Dhabi

  • By Aquatech
  • |
  • 07-05-2020

An increase in wastewater treatment and reuse will eventually help to reduce the reliance on water desalination and groundwater in Abu Dhabi.

Mark Nelson: Lessons from the Biosphere 2 experiment

Mark Nelson: Lessons from the Biosphere 2 experiment

  • By Aquatech
  • |
  • 28-04-2020

Through the Biosphere 2 experiment ecologist Mark Nelson developed a deep understanding of humans’ connection and impact on the water cycle.

Opinion: Unlocking water resources using biomimicry

Opinion: Unlocking water resources using biomimicry

  • By Arthur Umble
  • |
  • 22-04-2020

A truly circular economy must include water resource recovery, taking inspiration from nature and using biomimicry, writes Arthur Umble.

Frederico Fernandes: Shaping Águas do Porto’s future, respecting its past

Frederico Fernandes: Shaping Águas do Porto’s future, respecting its past

  • By Aquatech
  • |
  • 11-03-2020

The boss of Portuguese utility Águas do Porto explains why it’s important to create ‘purpose’.

Opinion: Why taking sludge digital makes sense

Opinion: Why taking sludge digital makes sense

  • By Mick Dawson
  • |
  • 09-03-2020

As water companies gear up to meet energy and carbon reductions, they should look towards efficient sludge pumping, writes Mick Dawson

Europe’s largest wastewater plant saves £500k/year

Europe’s largest wastewater plant saves £500k/year

  • By Aquatech
  • |
  • 07-12-2019

One of Europe’s largest wastewater treatment plants saved half a million pounds a year by making some simple changes.

Worms & water fleas: “innovative wastewater treatment” demonstrated in Scotland

Worms & water fleas: “innovative wastewater treatment” demonstrated in Scotland

  • By Aquatech
  • |
  • 21-11-2019

A Scottish utility is demonstrating a new EU-funded technology that uses worms and water fleas to treat wastewater.

Kaumera gum + Aquatech Innovation Award winners

Kaumera gum + Aquatech Innovation Award winners

  • By Aquatech
  • |
  • 04-11-2019

What is Kaumera gum and why was it the overall winner of the Aquatech Innovation Awards?

Plant power: Hanoi spreads its roots with new wastewater system

Plant power: Hanoi spreads its roots with new wastewater system

  • By Aquatech
  • |
  • 24-10-2019

A new ocean city development in Hanoi will feature a biological wastewater treatment system.

Can sludge treatment be beautiful - A Hong Kong spa proves it can

Can sludge treatment be beautiful - A Hong Kong spa proves it can

  • By Aquatech
  • |
  • 30-07-2019

Would you go for a sludge-powered spa-day? In Hong Kong, the Claude Vasconi designed architectural gem proves sludge treatment can be beautiful…

Biogas: an untapped energy source to avert a climate crisis?

Biogas: an untapped energy source to avert a climate crisis?

  • By Aquatech
  • |
  • 22-07-2019

By converting wastewater and other organic wastes into biogas, it could help to provide the electricity for 40 million people…

TRAILER LAUNCH: It’s time to embrace the Brave Blue World

TRAILER LAUNCH: It’s time to embrace the Brave Blue World

  • By Aquatech
  • |
  • 11-06-2019

A new industry-wide collaborative documentary is bringing together organisations from around the world to show that solutions exist today to overcome water challenges of the future.

Palladium used to “trace” nanoplastics throughout water treatment

Palladium used to “trace” nanoplastics throughout water treatment

  • By Aquatech
  • |
  • 16-04-2019

Researchers in Switzerland have developed a novel method to track nanoplastics as they enter the activated sludge process of a water treatment plant.

Food waste & sludge: teamwork makes the biogas dream work

Food waste & sludge: teamwork makes the biogas dream work

  • By Aqautech
  • |
  • 12-02-2019

A two-year trial from water agency PUB and the NEA concludes that treating food waste and sludge together increases the amount of biogas produced.

Sweden and  Germany kickstart phosphorus recovery drive

Sweden and Germany kickstart phosphorus recovery drive

  • By Aquatech
  • |
  • 12-10-2018

Water utility company Gelsenwasser AG has signed an agreement to recover phosphorus from incinerated sewage sludge in the ChemPark of Bitterfeld-Wolfen, Germany.

More data needed on microplastics and water

More data needed on microplastics and water

  • By Aquatech
  • |
  • 02-10-2018

Together with pharmaceuticals, the detection of microplastics in both water and wastewater is one of the largest growing environmental concerns.

Picking the circular economy technology winners

Picking the circular economy technology winners

  • By Aquatech
  • |
  • 22-03-2017

There is great interest in the opportunities around the circular economy, especially in Europe. This is precisely why it will feature as the theme of the BlueTech Innovation Pavilion at Aquatech Amsterdam in November. But which technologies will succ...