PBJ Engineering Services’ Post

Trickling Filter - Evolution § The Trickling Filter process is based on the biological oxidation of pollutants contained in the wastewater. § The media in the Trickling Filter provides a surface for the growth of bacteria and other micro-organisms that feed on the organic pollutants in the wastewater, and then uses oxygen in the air to convert these into harmless by-products. § Trickling Filters can provide biological treatment of wastewater to reduce Biological Oxygen Demand (BOD) and Chemical Oxygen Demand (COD) in carbonaceous systems, BOD and ammonia in combined carbonaceous and nitrifying systems and nitrifying filters to reduce ammonia. § Originally built using rock or stone media, Trickling Filters have proved simple to run, reliable, energy efficient and able to achieve successful treatment. The modern version of Trickling Filters uses the structured plastic cross-flow media. This continually splits and re-splits the applied flow at each point of contact between the opposite downward sloping corrugations of adjacent sheets in each media block to produce efficient mixing.

Another outstanding article by my colleagues Uwe Hübner and Joseph Jordan, offering valuable insights into 'How to Avoid Byproduct Formation When Using an Ozone and Biologically Active Filtration System.' This is yet another great example of how #Xylem is leveraging its technologies to address water challenges. Highly recommend giving it a read!

#DecoloringAgents Decoloring agents are substances used to remove color from a variety of materials, including textiles, paper, food products, and more. They play a crucial role in numerous industries by enabling the modification of colors and improving the quality of products.  Types of Decoloring Agents 1. Chemical Decoloring Agents:    These agents include bleaching agents such as hydrogen peroxide, sodium hypochlorite, and chlorine dioxide. They work by oxidizing the colored compounds in materials, leading to the degradation of chromophores—molecules responsible for color. 2. Enzymatic Decoloring Agents:    Enzymes such as laccases and peroxidases have emerged as environmentally friendly alternatives to traditional chemical decoloring agents. They facilitate the breakdown of color molecules through biochemical processes, making them suitable for applications where natural methods are preferred. 3. Adsorbent Materials:    Activated carbon and other adsorbent materials can physically remove color by trapping dye molecules on their surface. This approach is commonly used in wastewater treatment to eliminate dyes from industrial effluents.

Per- and polyfluoroalkyl substances (PFAS) are a group of synthetic chemicals that pose significant challenges in water treatment due to their unique properties.💧 Here are some key challenges associated with the removal of PFAS in water treatment: 🚰 Ineffectiveness of Conventional Treatment Methods Traditional Methods: Conventional water treatment methods like coagulation, sedimentation, and biological treatment are generally ineffective for PFAS removal. Incomplete Removal: Even advanced oxidation processes (AOPs) and some membrane technologies may not completely remove PFAS or may produce harmful byproducts. 🚰 Cost and Scalability High Costs: Advanced treatment technologies such as activated carbon adsorption, ion exchange resins, and high-pressure membranes (e.g., reverse osmosis) can be expensive to install and maintain. Energy and Resource Intensive: Some effective methods, such as high-pressure membrane filtration, are energy-intensive and may not be feasible for large-scale applications. Removing PFAS from water sources presents significant challenges due to their chemical stability, diverse structures, and low concentration levels. Overcoming these challenges requires continued research, development of advanced and cost-effective treatment technologies, and comprehensive regulatory frameworks to ensure safe drinking water. 💦 📝https://lnkd.in/e9kc7XgJ #Ezassi #Innovation #InnovationChallenge #WaterQuality #SafeWater #CleanWater

New research reveals how a surprising #catalyst can help to efficiently convert #nitrogen into useful products under ambient conditions. #chemicals #feedstock #ammonia https://lnkd.in/e5tAWXUv

A CO2 plant, also known as a carbon dioxide plant or CO2 generator, is a facility that produces carbon dioxide gas through various methods. Here are some key aspects of CO2 plants: #Types of CO2 plants: 1. Ammonia-based plants: Use ammonia as a feedstock to produce CO2. 2. Ethanol-based plants: Ferment ethanol to produce CO2 as a byproduct. 3. Natural gas-based plants: Burn natural gas to produce CO2. 4. Flue gas-based plants: Capture CO2 from flue gases emitted by power plants, industrial processes, or other sources. Applications of CO2 plants: 1. Food and beverage industry: CO2 is used for carbonation, packaging, and preservation. 2. Medical industry: CO2 is used for medical procedures, such as laparoscopic surgery. 3. Industrial processes: CO2 is used for chemical synthesis, oil recovery, and other applications. 4. Greenhouses: CO2 is used to enhance plant growth and increase crop yields. Benefits of CO2 plants: 1. Supports industrial processes 2. Enhances food and beverage production 3. Contributes to medical advancements 4. Helps increase crop yields in greenhouses

Plasma and corona treatment are emerging as environmentally responsible solutions for surface modification within the manufacturing sector. These techniques offer several advantages over traditional methods: Reduced Chemical Reliance: Unlike conventional approaches that often rely on harsh chemicals, plasma and corona treatment minimize or eliminate chemical usage. This significantly reduces hazardous waste generation and potential environmental impact. Energy Efficiency: These treatments operate at lower energy levels compared to other surface modification methods, resulting in a smaller carbon footprint and lower overall energy consumption. Durability and Material Efficiency: By enhancing adhesion between materials, plasma and corona treatment contribute to longer-lasting products. This reduces the need for frequent replacements and associated waste generation. Additionally, their versatility allows for effective treatment of a wider range of materials, potentially eliminating the need for additional materials or processes with a higher environmental impact. In conclusion, plasma and corona treatment offer a sustainable solution for surface modification by promoting reduced chemical use, energy efficiency, and durable product lifespans, while also contributing to material efficiency across various industries. #surfacetreatmentsystems #plasmasurfacetreatments #coronasurfacetreatments #corona #plasma #PlasmaSurfaceTreatment #PlasmaPrinting

Avista membrane chemicals are different from other chemicals because they are designed to address specific problems in water systems, such as scaling, fouling, and microbial growth: Specialty chemistries Avista's specialty chemistries are formulated to address specific problems in water systems, such as scaling, fouling, and microbial growth. More efficient dosing Specialty chemistries are more efficient to dose, which can lead to lower overall usage and cost savings. Reduced maintenance Specialty chemistries can reduce the frequency of maintenance and extend the lifespan of equipment. Diagnostic devices Avista uses a combination of products and diagnostic devices to help optimize your RO system. Green chemicals to help meet strict environmental discharge limits. mangesh.bang@ionsingapore.asia

This study developed apple pomace biochar (ABC) and modified it to enhance soil properties and immobilize cadmium (Cd). The best results were with 13% Mn-P-ABC, reducing extractable Cd by 43.84%, decreasing acid-soluble Cd by 35.57%, and increasing residual Cd by 30.18%.

What is the application of activated carbon in water treatment? https://lnkd.in/dvwrPvTH This thesis is the result of many a long hour involving arduous research and the culmination of a process that included the explore a new sequential process for water treatment its two steps, adsorption on activated carbon and in situ photocatalytic oxidative regeneration, were investigated successively. Several commercial activated carbons (AC) and sewage sludge based activated carbons (SBAC) were tested with several phenols and one dye as pollutants. Despite low BET surface SBAC exhibits convenient adsorption properties. Photocatalysis on TiO2 was carried out with several materials to achieve activated carbon adsorption- egeneration process: a multilayer tissue with fixed granular AC and TiO2 on a sheet, a composite with TiO2, CVD deposited on AC, and AC-TiO2 powder mixture for comparison. Promising results were obtained especially with TiO2 deposited on AC proving the vicinity of adsorption and photocatalytic sites to be beneficial.