Applied DBNPA in the feed water of integrated membrane systems to evaluate the impact on pressure drop increase and chemical cleaning frequency. A continuous high DBNPA dosage of 20 mg/L on fouled membranes caused a significant decrease in cleaning frequency due to the stabilization of the pressure drop.
What is the feed rate of DBNPA 20? 12 to 48 ppm is for a maintenance dosage. 480 max slug dosage. Use to monitor performance. This product is 5% in concentration. DBNPA 20 or 2,2-dibromo-3-nitrilopropionamide is a quick-kill biocide that easily hydrolyzes under both acidic and alkaline conditions. It is preferred for its instability in water as it quickly kills and then quickly degrades to form a number of products, depending on the conditions, including ammonia, bromide ions, dibromoacetonitrile, and dibromoacetic acid. DBNPA 20 acts are similar to the typical halogen biocides.
Excellent industrial DBNPA 20% biocide solution.Fast-acting, broad-spectrum biocide for treating raw materials, process water, and contaminated products and systems. DBNPA 20 chemical name is 2.2-Dibromo-3-Nitrilopropion Amide. DBNPA 20% Microbicide offers broad-spectrum control of bacteria, fungi, and algae. It is quick-acting and breaks down rapidly into non-hazardous materials. Active Ingredient 2,2-Dibromo-3-nitrilopropionamide.
The advantages of DBNPA 20% include 1.able to eradicate a wide range of microbes (fungal, bacterial, algal).2. Minimizes production downtime and delays due to contamination.3.Environmentally friendly.4.Handling ease.5.Do not contribute problematic components to formulate or create long-term health and safety concerns.
In general, avoid eye and skin contact, wear safety goggles, gloves, and protective clothing. In case of eye or skin contact, despite precautionary measures, wash immediately and thoroughly with plenty of warm water and obtain medical attention. Vapors, including cyanogen bromide, may be present in unvented containers. These vapors may be irritating to the upper respiratory tract of workers, who allow their mouth or nose to get close to the container opening. It can be stored for 12 months under normal temperature conditions.
Biofouling of RO membranes is a common problem for many membrane filtration systems that source water from open ocean intakes, seawater wells, brackish river water, and other surface waters that contain naturally occurring organic matter. The limiting factor to biofouling control is the incompatibility of the polyamide thin-film composite RO membrane to chlorine exposure, as well as exposure to other oxidizing chemicals commonly used for process water disinfection. DBNPA may be used to control bacteria and reduce biofouling in various membrane system types (reverse osmosis, ultra-filtration, nano-filtration, and microfiltration) used for industrial water processing. Acceptable industrial applications include reverse osmosis systems for the production of boiler make-up water for electric power production, electronic component rinsing, and the chemical manufacturing industry. DBNPA can also be used for off-line cleaning of RO membranes producing potable and municipal water. DBNPA 20 Water Treatment Microbiocide is for use in RO systems in the industrial market and for off-line cleaning of RO membranes producing potable and municipal water. It is important to note that DBNPA 20 Water Treatment Microbiocide is NOT approved for online use in RO systems that produce potable and municipal water. Note: Due to regional differences, 20% DBNPA for industrial RO systems is approved and marketed in Europe under the product name of DBNPA 20 Water Treatment Microbiocide. In other approved regions of the world, it is marketed under the name DBNPA 20 Water Treatment Microbiocide.
DBNPA 20 is technical grade 2.2-dibromo-3-nitrilopropionamide. It is only registered for non-fifra use in the US. DBNPA 20 is a quick-kill biocide.
DBNPA 20%is stable under normal conditions. Avoid process temperatures of 70°C (158°F) or higher and use of strong reducing agents. Please refer to the safety data sheet of this product for precise handling instructions. The processing and use of industrial chemicals require adequate technical and professional knowledge.
The use of membrane filtration processes for the production of fresh and clean water has strongly increased over the last decades. Nanofiltration (NF) and reverse osmosis (RO) are processes removing salts, micropollutants, viruses, and microorganisms, enabling the production of high-quality water. The membrane lifetime and operational costs are affected by fouling. The consequence of fouling is e.g. an increased feed pressure to maintain water production, the need to perform chemical cleanings of the membranes, and eventually membrane replacement. Four types of fouling can occur: scaling (inorganic fouling), colloid fouling, organic fouling, and biofouling. Biofouling is most frequently encountered and most difficult to control. Biofouling is defined as the amount of accumulated biofilm (biomass) causing unacceptable membrane performance loss.