Harald Kleiven

Technology

Sludge-to-Energy: Plants Boosting Energy Recovery with THP

How are wastewater plants turning sludge into energy, and how thermal hydrolysis is improving efficiency and energy balance in plants worldwide. 29 September 2026

Biosolids as Fertilizer: Advantages, Concerns, and Safe Use

Find out how biosolids use as fertilizer benefits soil and crops, what concerns it raises, and how its risks can be managed. 24 August 2026 Biosolids

Biosolids Land Application: Benefits, Risks, Rules and Outlook

Explore why biosolids are applied to land, how the practice works, key regulations around the world, risks, and where land application is headed. 13 July 2026 Biosolids

What Are Biosolids? A Complete Guide to Treated Sewage Sludge

A practical guide to biosolids, covering treatment methods, classifications, as well as reuse and disposal options. 21 May 2026 Technology

Wastewater Management Plan: A Practical Guide

Understand the components and key steps of an effective wastewater management plan, and why sludge planning is central to future-ready systems. 7 April 2026 Technology

Waste Activated Sludge Explained: Characteristics and Treatment

Learn the complexities of waste activated sludge in wastewater treatment, its characteristics, and effective treatment methods to enhance plant efficiency. 25 March 2026 Technology

Thermal Sludge Treatment: Methods and Advantages

Compare thermal sludge treatment methods - incineration, pyrolysis, and gasification - and learn about technologies improving their energy efficiency. 6 February 2026

A 2026 Guide to Key Water, Wastewater, Biosolids Conferences

Dive into our list of the most anticipated water, wastewater, and biosolids conferences of the year. 20 January 2026 Technology

PFAS in Biosolids: Solutions and Treatment Technologies

See how wastewater and sludge treatment plants are managing PFAS in biosolids through regulation and advanced technologies. 2 January 2026 Technology

Nitrogen Recovery in Wastewater Treatment

Look into how economic incentives, stringent limits, and emerging technologies are shaping nitrogen recovery in wastewater treatment. 5 November 2025 Technology

Navigating Wastewater Management: A Whitepaper Preview

Identify the key pillars, risks, and strategies for resilient wastewater management in this Cambi whitepaper summary. 1 October 2025 Technology

Phosphorus Recovery in Wastewater Treatment

Uncover why wastewater plants are recovering phosphorus, its role in fertiliser security, operational performance, key policies, and the global outlook. 19 September 2025 Technology

The Carbon Footprint of Wastewater Treatment Plants

Discover how wastewater treatment plants can reduce their carbon footprint through smart technologies and innovative sludge management practices. 22 July 2025 Technology

Sludge Gasification: Fundamentals and Integration Scenarios

Learn about sludge gasification – an energy-focused endpoint for sludge, and various implementation approaches. 19 June 2025 Technology

Sludge Pyrolysis: Exploring Benefits and Limitations

Discover how wastewater utilities are using thermal processes like sludge pyrolysis to reduce waste volume and eliminate harmful contaminants efficiently. 27 May 2025 Technology

Urban Wastewater Treatment Directive: A Guide for EU Utilities

The 2024 UWWTD revision brings stricter standards, new deadlines, and big shifts for Europe's wastewater sector. Here's what utilities need to know. 23 April 2025 Technology

Codigestion: Integrating Organic Waste into Sludge Treatment

Learn about codigestion in wastewater treatment plants, its benefits, challenges, and real-world applications. 18 March 2025 Technology

Biogas from Wastewater: A Sustainable Energy Solution

Uncover the potential of biogas from sewage sludge and discover how it drives sustainability and saves costs in wastewater treatment plants worldwide. 29 January 2025 Technology

Advanced Anaerobic Digestion: A Guide to Key Technologies

Take a look at key technologies enabling advanced anaerobic digestion and learn how they optimise sludge treatment in the wastewater industry. 12 December 2024 Technology

Fugitive Emissions in Wastewater Treatment: A Climate Threat

Mitigate methane, nitrous oxide, and CO₂ emissions by addressing the impact of fugitive emissions from wastewater treatment. 14 November 2024 Technology

SolidStream: Post-AD THP and Its Potential Unlocked

Enhance sludge treatment with SolidStream, an innovative thermal hydrolysis configuration applied after digestion, offering significant benefits. 29 October 2024 Technology

Thermal Hydrolysis Configurations and Their Unique Strengths

Uncover the unique advantages of various thermal hydrolysis configurations and their impact on wastewater treatment efficiency. 20 September 2024 Biosolids Incineration

Davyhulme: The Story behind Europe's Largest THP Plant

Learn from the story of one of the UK's largest wastewater companies, United Utilities, on their journey in adopting advanced digestion at Davyhulme. 16 August 2024 Technology

Cambi Thermal Hydrolysis: Presence and Future in the Nordics

Get to know how the global sludge treatment technology, thermal hydrolysis, is developing in its area of origin, the Nordics. 15 July 2024 Technology

Thermophilic Digestion vs THP+MAD: Project Saraswati 2.0 Results

Examine Project Saraswati 2.0's study results comparing thermophilic digestion with thermal hydrolysis and mesophilic digestion. 21 June 2024

Industrial Emissions Directive: EU Wastewater Sector Impact

See how updated EU rules, like the Industrial Emissions and Urban Wastewater Treatment Directives, are shaping the future of the wastewater industry. 14 May 2024 Biosolids

DC Water Bloom: A Biosolids for Land Application Success Story

Understand how DC Water, a world-leading utility, developed and launched Bloom, a high-quality biosolids product for land application. 19 April 2024 Technology

Sludge Drying: Optimise Energy Use with Thermal Hydrolysis

Find out how sludge dryers can increase capacity and help optimise wastewater utilities' energy costs with thermal hydrolysis. 5 March 2024 Technology

The Mark II Upgrade – A Boost for THP Capacity

Upgrade to Cambi’s Mark II system for enhanced thermal hydrolysis performance, improved reliability, and reduced maintenance. 25 January 2024 Incineration

Sludge Incineration and the Thermal Hydrolysis Advantage

Explore how and why thermal hydrolysis is being adopted by more utilities for sewage sludge incineration. 9 January 2024

ISO 45001:2018 Certification - Our Health and Safety Pledge

Learn how Cambi’s ISO 45001:2018 certification enables us to prioritise health and safety at work for everyone. 13 November 2023

The Wastewater Circular Economy: An Untapped Resource

Reimagine wastewater’s role in contributing to a circular economy, creating widespread benefits for the planet and its inhabitants. 30 October 2023 Biosolids

Anaerobic Digestion for Sewage Sludge Management

Get an overview of anaerobic digestion, its products, benefits, process, and types of digesters relevant to the wastewater and sludge industry. 15 April 2022

Three Decades of Innovation: An Interview with the CTO

Cambi CTO Hans Rasmus Holte reflects on decades of innovation, sharing insights into Cambi’s early success and the future of thermal hydrolysis. 31 January 2022 Biosolids

Sludge Dewatering: How Does Thermal Hydrolysis Improve Dewaterability?

Dr. Kine Svensson explains how Cambi's thermal hydrolysis process improves sludge dewaterability, helping reduce biosolids volumes at wwtps. 11 January 2022

COP26 Is Over. What Next for the Water Sector?

OPINION | One thing is clear from COP26 and past gatherings: Politicians are slow to commit to and implement effective climate policies. 15 November 2021

An Introduction to Wastewater Treatment

Learn about the basics of municipal or sewage wastewater, and its conventional treatment steps, as well as its value for society and the environment. 30 August 2021 Biosolids

An Introduction to Sewage Sludge and Sludge Treatment

Get insights into the basics of sewage sludge and its treatment, including key steps, actors, and its significance for public health and the environment. 15 August 2021 Biosolids

A Leap to Advanced Sewage Treatment for India

OPINION | A 2021 Supreme Court ruling on strict discharge standards could transform sewage treatment in India, with added benefits from sludge management. 30 July 2021 Biosolids

Class A Biosolids and the Future of Biosolids Management

Achieve Class A biosolids with Cambi’s thermal hydrolysis process, ensuring safer, more sustainable waste management. 15 July 2021 Technology

Cambi Flexishaft Pumps: Low Maintenance Pumps for Thermal Hydrolysis

Leverage Cambi and NOV Inc.'s collaboration on Flexishaft pumps to boost thermal hydrolysis performance and extend maintenance intervals. 1 July 2021