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Typical Steel Mills use acids in the pickling process. There are a ton of companies now that can help them reuse and regenerate the spent acid. After final use though, depending upon the concentration of metals present, this acid may also be used for pH adjustment at other waste treatment plants. Oily sludge is generated and usually sent off to waste haulers at significant costs. There are alternatives to this also depending upon the plant, the types of cokers, blast furnaces, EOF's or BOF's, and metals present. Steel is one of nine energy- and waste- intensive industries that is participating with the U.S. Department of Energy's Office of Industrial Technologies in a new collaborative R&D strategy called "Industries of the Future." http://www.oit.doe.gov/steel/ The steel industry (including iron production) is one of the
largest energy consumers in the manufacturing sector and has invested more than
$7 billion in environmental controls. Steel is the most recyclable and recycled material in North America, with an overall recycling rate of 68 percent. Recycling Water usage at a steel mill can be high. Boiler and Cooling Tower Blowdown Key Inputs and Outputs The Average Solids Generation Ratio To Use As Benchmark in a wastewater treatment plant for sludge: Basic Steel (coke): BOD 1.0:0.15 Sludge MicroSolv 410 can be used to help biological problems at a steel mill. Bioaugmentation in Steel mills for BOD and TSS reduction Areas in a wastewater treatment plant that can be optimized: Prior to API there was a holding tank or scum pit that collected oil and scum
Oily emulsion spill leading to a violation Algae on weirs
leading to
Scalping tank that needed to be optimized
Solids build-up on scrapers of DAF Sludge Thickener Clarifier with too many solids and gassing
Oil slicks near clarifier burping up can lead to permit violations
Oil can be sold to waste haulers to be re-used as fuel instead of being charged disposal fees Boiler and Cooling Tower Blowdown Cooling Tower Microscopic analyses
Case History
Tank Remediation at a PetroChemical Plant We are working with a PetroChemical plant down in Louisana. They had an 800,000 gallon tank filled with wastewater that they wanted to clean up and empty out. We suggested a biological program-MicroSolv 400 for tank remediation. The plant started the program and had the tank cleaned up in less than three weeks, yet the tank had been sitting there filled for over three years. They were tremendously impressed. They would have spent hundreds of thousands of dollars to haul out the waste. Tank remediation is not really that hard. As long as the contents are organic, it is actually quite simple. To the bacteria, it is just food. Since the waste stream is already isolated, it becomes just a time and numbers game with the right species of bacteria. Inoculate the tank with bacteria, make sure the critical 5 are in place- (pH, D.O., temperature, N and P) and watch them go to work! It does not really take long depending upon how much you seed the tank with. And the bacteria grow and multiply exponentially, so just sit back and wait. You wind up with a clean tank, clear effluent, and some bacteria residuals on the bottom of the tank that need to be disposed of- ( usually sent to the plants onsite dewatering system) or land applied.
Soil Remediation-Industrial zone Alon Tavor Israel Plant Issues 900 m3 of Contaminated Soil. Pollution: Crude oil. Several option where evaluated and E. H. Green/Environmental Leverage bioaugmentation program solution was elected. Due to the Hydrologic Area which the plant is located in ,the EPA of Israel instructed the plant to move the soil or reduce the TPH ( Total petroleum Hydrocarbons) from 842 to 100 ppm. Initial proposal assumed that it would take a few months due to high heat in the summer, and mainly the amount of soil and contamination to treat. After two weeks, TPH was down to 311, the following week, 133. Final TPH levels were pulled at 4 locations- 38, 39,81 and 37 were the final TPH readings, ~90-95.6% reduction in TPH ( Total petroleum Hydrocarbons) 80% cost reduction in treating the soil biologically including labor, nutrients, biological products, etc vs. hauling out the dirt as hazardous waste~ Soil Remediation Case History- Total Petroleum Hydrocarbons
Bacteria for Wastewater Treatment Microbial Products for Bioaugmentation and Bioengineering Biological Products for use in Wastewater Applications for Bioengineering and Bioaugmentation Biological Products, Descriptions, Usage and Applications
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Steel Mills-Some benchmarks and typical problems
found in this industry 
TSS violations
in final effluent
