What are the most effective waste treatment options prior to discharge to receiving bodies of water or the local wastewater treatment facility?
Paint manufacturers, to include Sherwin-Williams, produce a variety of different paint types and colors, including both organic solvent-borne and water-borne paints. Each type and color of paint is manufactured in a separate batch, and all manufacturing equipment is generally cleaned between batches to prevent contamination (figure 1-1). This equipment cleaning process is the largest source of waste from paint manufacturing and can account for up to 80% of a paint manufacturer’s waste stream (WMRC, 1992). These wastewaters are generated by the equipment cleaning, surface preparation, and the rinsing of a surface after paint removal. Paint-related wastewaters can contain organic solvents, heavy metals, and other toxic materials used in paint formulations, surface preparation, and equipment cleaning. These are just a few of the many types of waste produced during the paint lifecycle (figure 1-2).
Because of the Clean Water Act of 1972, most point sources of wastewater that have the potential to be discharged to a waterway require a National Pollutant Discharge Elimination System (NPDES) federal or similar state issued of permit (EPA, 2012). Even with this permit, pretreatment of wastewater, prior to discharge, is generally necessary to keep waste at a legal exposure limit. To reduce the amount of waste contaminate prior to discharge various types of wastewater treatment activities are performed. These include methods such as settling to remove paint sludge and basic chemical neutralization. Another method is to reduce solids in wastewater by means of coagulation and flocculation using fer...
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...tates Environmental Protection Agency : http://cfpub.epa.gov/npdes/home.cfm?program_id=45
GEA. (2013). Water Treatment in Paint Shops. Retrieved from GEA Westfalia Separator Group Homepage: http://www.westfalia-separator.com/fileadmin/Media/PDFs/Brochures/environmental-technology-EN-ET-13-01-0001.pdf
PaintCare Inc. (2013). About PaintCare. Retrieved from PaintCare Web Site: http://www.paintcare.org/
Sherwin-Williams. (2013). Resuing As Well As Recycling. Retrieved from Sherwin-Williams Environmental Web Site: http://viewer.zmags.com/publication/f49fd66f#/f49fd66f/54
Siegel, R. (2011, June 30). Sherwin-Williams Spreads Sustainability Farther with New "Green" Paint. Retrieved from TriplePundit Web site: http://viewer.zmags.com/publication/f49fd66f#/f49fd66f/54
WMRC. (1992). Paint Waste Reduction and Disposal Options. Champaign: Illinois Department of Natural Resources
Stephenson, R., & Blackburn, J. J. (1998). The Industrial Wastewater Systems Handbook. New York: Lewis Publishers.
In comparison, well designed and operated primary settling tanks without addition of coagulants may remove between 50-70% of TSS, 25-40% of BOD5 and 5-10% of phosphorus (Rashed et al., 1997; Metcalf & Eddy, 2003; Mahvi et al., 2005; Sarparastzadeh et al., 2007; Rashed et al., 2013b; Barbosa et al., 2016; Barghpeyma and Farahbod, 2016).The main problem of CEPT is the chemicals costs, which considered to be an additional burden on the operating costs of wastewater treatment (Xu et al., 2009). On the other hand, water treatment sludge contains a significant amount of coagulant when it can be recovered to be more economical for CEPT as well as safe disposal of water treatment sludge (Rashed et al., 1997; Xu et al., 2009; Evuti and Lawal, 2011; Allerdings et al., 2015; Roccaro et al., 2015; Ayoub and Abdelfattah,
Storm water runoff is the biggest polluter of streams, creeks, rivers and ocean water systems. “Nationwide, storm water is a leading source of water pollution. About thirteen percent of U.S. rivers, eighteen percent of lakes and thirty-two percent of estuaries are classified as impaired by storm water, which means they are rendered unsafe for swimming or fishing. It also contributes to the degradation of many other waterways” (Coefield, 2010, p.1). The improperly disposed coal waste from Duke Energy easily percolates through t...
The bacteria and wastewater is mixed in an aeration tank and therefore the contaminants are removed by action of sorption and series of breakdown by the bacteria.
Waste water treatment plants are essential to communities of all sizes and must work efficiently. Waste water treatment plant primary priority and responsibility is the treatment of incoming sewage water by the removal of biological and chemical wastes so it can be treated and recycled for future use. There are many government agencies and standards set forth to govern and observe the successful treatment of sewage such as: the Department of Environmental Quality, the National Pollutant Discharge Elimination System and the Clean Water Act of 1972. Compliance and constant monitoring of the treatment plant’s operations are important; as they protect the surrounding community. A spill or backflow of sewage due to a complete system malfunction could potentially be detrimental to the environment and local community. A precise system, of which must be compliant according to government standards, is critical to maintain low levels of wastes that are returned to neighboring water systems after treatment.
The primary treatment includes the screening process in which large objects are removed. Then, grit removal takes place; where small inorganic materials, such as sand, gravel etc. are forced to be settled and then be removed while leaving the organic materials suspended in water. After that, water is left for heavier materials to settle down in sedimentation tanks. The secondary treatment takes place directly after the primary, where bacteria and microorganisms are used to remove the organic materials; therefore, oxygen depleting pollutants. Then, sedimentation takes place again to remove solid materials. Although water was filtered out of the organic and inorganic wastes; colors, metals and nutrients are removed by the tertiary treatment. Nitrogen is removed by nitrogen removing bacteria while phosphorous is removed by phosphorous removing bacteria or it can be converted to salts, kept to settle down and then removed by some chemicals such as aluminum or ferric. When the wastewater treatment is done, disinfection occurs to disinfect effluent before it’s discharged; and this happens using disinfectants such as chlorine gas or sodium hyper chloride, or by the use of disinfecting agents such as ultraviolet light or
Horan, N. J.: Biological wastewater treatment systems: theory and operation. Thomson Press ( India) Ltd; 1990. 124-132 p
Greer, D. (2004, September-October). Green builders get big help from deconstruction. In Business, 26(5), 20. Retrieved from http://www.jgpress.com/inbusiness/archives/_free/000648.html
Pharmaceutical waste seems to be one of the dominant elements that are prevalent in our waters, and other aspects of the environment. These aforementioned elements are largely becoming a concern in today’s society because its effects have proven to be harmful towards our environment, and all of its existing forms of life. Through various ways, whether controllable or uncontrollable, pharmaceutical waste slowly and increasingly multiplies its presence within the environment. Additionally, it eventually trickles down into our waterways and causes a large array of damages. Some of the most common ways that this waste gets into the water includes: disposal through the drainage systems, farming fertilization methods and the maintenance of treatment plants. These methods are self-explanatory through their brief discussions, but it helps decipher whether the disposal of these dangerous wastes are intentional or not.
Water mismanagement has become a crisis of governance that will impact heavily on public health and the environment, while tensions and conflicts increase over declining resources.... ... middle of paper ... ... Together I Think UV oxidation and the Life Saver Bottle should be used I say this because the Life Saver Bottle is meant for Third world countries where the water is dirtied by bacteria and viruses not chemicals.
Chemical waste should be disposed by following proper methods because most of the chemicals used in the laboratories are harmful.
Improvement and upgrading of wastewater treatment processes and also the need to reduce the environmental factors make the use of tertiary wastewater treatment important.
the waste, have different methods are used and what type of benefits to the industry and other waste are
Wastes are the products of our consumptions in our daily life routines such as lunch, work, school and other things we do. Little things such as throwing out a piece of paper, we are producing waste by the seconds. After we consume a product we usually throw out what’s left that can’t be consumed any further. Results in producing waste, substance that are born after it’s been use or consume by us. At the end of each day we throw out a bag full of garbage, all of the materials in that bag (paper towels, cans, leftover foods and many other material’s) all of these are waste. Hospitals produce medical waste such as use needles for treating patients. Corporations produce papers, plastics, tires, steels, cans and many other type of solid waste which contribute to the pollutions that cause health risk and other environmental issues.
Hazardous waste management is defined as the collection, treatment and disposal of unwanted material that poses the threat to the environmental chemical under managed conditions. In the hazardous management system, the treatment technologies are an inevitable method for a waste management stream. Treatment process is a significant method used to minimise the amount of hazardous waste produced and recover useful products. It can be classified into chemical, physical and biological methods. One of the best ways to get rids of waste is through chemical treatment process. Chemical treatment methods mostly use different properties of chemical to alter the characteristic of hazardous element into less hazardous elements. It is usually required an