Pretreatment
Wastewater undergoes pretreatment to remove inorganic solids, fats, oils, and greases that may hinder the anaerobic process. This includes screening and degritting to eliminate larger debris and particles, followed by initial sedimentation to settle heavier solids. These steps ensure that the subsequent anaerobic digestion process runs more smoothly and efficiently.
Anaerobic Digestion
In the anaerobic digester, the microbial process is divided into 4 stages. These 4 stages include hydrolysis, acidification, acetogenesis, and methanogenesis. Initially, during the hydrolysis process, complex organic compounds are broken down into simpler forms. These compounds then undergo acidification and are converted into volatile fatty acids, alcohols, hydrogen, and carbon dioxide.
Next comes acetogenesis, which further metabolizes the volatile fatty acids and alcohols into acetic acid, hydrogen, and carbon dioxide. Finally, methanogenesis occurs, where methanogenic archaea convert acetic acid, hydrogen, and carbon dioxide into methane (the main component of biogas), with carbon dioxide as a byproduct. This series of reactions effectively converts organic pollutants into valuable energy resources and byproducts.
Post-treatment
After the anaerobic digestion process is complete, the wastewater may still contain pollutants and pathogens. Further treatment, such as biogas treatment, is often required to meet discharge standards or achieve the intended reuse.
This may include aerobic treatment, filtration, or disinfection processes. These additional steps ensure that the treated water meets environmental regulations and is safe for discharge or reuse, completing the wastewater treatment cycle.
What is aerobic wastewater treatment?
Aerobic wastewater treatment is a biological process that uses oxygen to break down organic matter to treat sewage and industrial wastewater. Unlike anaerobic treatment, which operates without oxygen, aerobic treatment relies on the presence of oxygen to support the growth of microorganisms (aerobic bacteria) that consume organic contaminants in the wastewater.
Not only does this process significantly reduce the amount of organic matter and waste, it also converts them into stable forms such as carbon dioxide and water, making the wastewater safer for discharge or further treatment. Aerobic bacteria help digest these organic contaminants, ensuring effective treatment of sewage and other types of wastewater.
Activated sludge based pollution removal
We have successfully implemented biological processes that use oxygen to break down organic pollutants and other pollutants such as nitrogen and phosphorus almost everywhere.
From sewage treatment plants treating the wastewater of millions of people, to aerobic post-treatment of biological wastewater in breweries, our activated sludge based LAT aerobic solutions will help you meet discharge regulations, reduce discharge costs and the impact of your discharge on the environment.
Shandong Longantai Environmental Protection Sci-tech Co., Ltd., established in 2005, focuses on energy-saving and compliant treatment of industrial wastewater, wastewater recycling and reuse, and wastewater resource and energy recovery. The company provides high-value comprehensive solutions and key equipment. It integrates research and development, manufacturing, process design, project construction, and water services operation. Longantai has strong capabilities and a complete quality system in the R&D and manufacturing of water treatment catalysts, critical water treatment equipment, wastewater resource recovery equipment, and industrial energy recovery equipment.
Longantai company provides high-value-added comprehensive energy-saving and emission reduction solutions in major technological and engineering applications such as industrial wastewater, refractory wastewater, high-salinity wastewater, high-concentration wastewater treatment, energy-saving upgrades for wastewater treatment standards, wastewater recycling and reuse, and water quality improvement for rivers and lakes. These solutions effectively improve resource utilization, reduce enterprise costs, and contribute positively to green, low-carbon, and high-quality development.
Longantai places great emphasis on the role of research and development in its growth. The company currently holds over 50 invention patents, more than 10 utility model patents, 1 design patent, 1 first prize for provincial-level scientific and technological progress, and 1 first prize for scientific and technological progress from the China Environmental Protection Industry Association. Longantai has established industry-academia-research collaborations with several top domestic and international universities and research institutions. Over the years, the company has been recognized with numerous honors, including National High-Tech Enterprise, National "Little Giant" Enterprise for Specialized and New Technology, Provincial Gazelle Enterprise, Provincial Specialized and New Technology Enterprise, Provincial Manufacturing Champion, Provincial Innovative Small and Medium-Sized Enterprise, Hidden Champion Enterprise, Provincial "One Enterprise, One Technology" R&D Center, and Provincial Industrial Design Center.
Longantai is a leading domestic provider of water treatment solutions, a manufacturer of critical water treatment equipment, and a water services operator. The projects it has served have received extensive coverage from numerous mainstream media outlets, including China Environment News, Xinhua News, Phoenix News, Sina, and various provincial TV stations.
Longantai is a collaborative and open platform with a comprehensive innovation system, mature practical technologies, and advanced manufacturing expertise. It brings together a team of passionate, responsible, grateful, and ambitious professionals. As Longantai continues to grow, it is eager to collaborate sincerely with partners worldwide, working together to contribute to the protection of the environment and the pursuit of sustainable development for humanity. With the mission of "developing energy-efficient and resource-sustainable environmental technologies and equipment for our customers," Longantai strives to fulfill its dreams and responsibilities with gratitude. With humility and dedication, the company aims to work alongside friends from all sectors to safeguard our clear waters, blue skies, and peaceful, harmonious homeland.
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