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LCP Tech, Inc. has developed proprietary enzyme formulations, NanoCleanse®-SRB which controls hydrogen sulfide (H2S) gas created by the presence of Sulfate Reducing Bacteria (SRB). SRB convert sulfate in water to sulfide, resulting in a number of adverse effects, which includes: · Generation of toxic hydrogen sulfide, with smell of “rotten eggs” · Severe pitting and corrosion [(MIC) Microbial Induced Corrosion], even in stainless steels and concrete · Metal precipitation, which enhances biologically generated sulfide · Forms biofilms (slime layers) which resist even the strongest biocides · Presence of SRB also contribute to fungal growth
Benefits of using NanoCleanse®-SRB · Non-Toxic Product · Worker Friendly · Stops generation of hydrogen sulfide gas at the source and eliminates odor of “rotten eggs” · Controls microbial induced corrosion (MIC) by stopping H2S. · Eliminates black sulfide precipitates. · Stabilizes the pH · Extends sewer or bath life · Slime layers naturally sloughs off wherein the sulfide is generated · Controls fungal growth caused by presence of sulfide Sulfide Generation in Sewers Sulfide
generation in sewers is caused by the reduction of sulfate in wastewater
by sulfate reducing bacteria (SRBs) in the presence of dissolved BOD. The
sulfate reducing bacteria often reside in the slime layer that covers the
wetted surface of the sewer pipes. These sulfides then partition into the
air at a wet well resulting in the emission of hydrogen sulfide gas
together with a number of other volatile organic compounds (VOCs). The
formation of hydrogen sulfide results in the generation of sulfuric acid
on the sewer walls, resulting in corrosion of pipes and wet wells.
Deterioration of sewer networks and wet wells is a major issue an Traditional methods of sulfide treatment such as ferrous/ferric salts, ozone, hydrogen peroxide, etc. are unable to penetrate the slime layers in the sewer pipe, which are the primary sources of sulfate reducing action. As long as the slime layers persist within the sewer pipes, sulfide generation will continue requiring recurring expenses of chemicals to treat the generated sulfide. The use of NanoCleanse breaks this sulfur cycle by preventing the formation of sulfide within the slime layers. It is not a biocide and does not harm any bacteria – aerobic or anaerobic. It allows the slime layers to break up on there own by disrupting the capability of sulfate reducing bacteria (SRBs) to form and fortify the slime layers. This results in slime layer sloughing off, thereby eliminating the major source of sulfide production within the sewer pipe. Buildup in Sewer Pipe resulting in clogging and corrosion
Case Studies Customer Studies
Cleans Lagoons in Sugar Beet Industry Case Study 1: NanoCleanse®-SRB has been tested by two sugar beet companies where it is added to lagoons to prevent the generation of hydrogen sulfide gas. The companies were concerned about odor and government fines for exceeding H2S levels. NanoCleanse®-SRB successfully controlled the H2S and the associated odor. Over time the lagoons became clearer. The reduction of sulfides helps prevent the growth of algae and other types of anoxic bacteria that can produce foul smell and turbidity in the lagoon.
Eliminate Morning Smells in Metalworking Industry Case Study 2: A US EPA funded study performed by TechSolve found that NanoCleanse®-SRB controlled odor in a metal working sump for a study period of over 6 months. The study was conducted at a metalworking shop in a sump where odor and SRB’s were detected. Typically SRB’s are very robust and biocide resistant. NanoCleanse®-SRB can be used in a large variety of industrial processes safely and effectively.
Prolongs Central Cleaning Systems for Automotive Manufacturers Case Study 3: Cleaner Bath life is critical to manufacturers. NanoCleanse®-SRB was tested in a 12,000 gallon central cleaning system at one of the major automotive manufacturers. In this particular plant, the cleaning process uses ultrafiltration to extend cleaner bath life. The biomass was out of control, clogging the filters and the bath had to be dumped. Instead of dumping the bath, NanoCleanse®-SRB was added to the system and cleaning tank was brought under control. The system has been operating as if new fresh fluid was being used since the addition of the NanoCleanse®-SRB and absolutely no H2S gas has been detected. Cost savings through preventative dumping of this one tank was over $5,000.00. After several months the manufacturer reports that the ultrafilter needs to be cleaned only once per month verses every 2-3 days and that the UF membrane is significantly easier to clean. Bag filters which were replaced 9 times/day were reduced to once per day. Note: Similar results were duplicated in a gas valve manufacturing facility. Lab Study 1
Pictured here is a test on the influent from a 3.2 million gallon thickener at a coal fired power plant. The thickener was septic, the inlet flow samples on the right were treated with NanoCleanse®-SRB and the results show all samples with levels of NanoCleanse®-SRB did not turn black. The control samples (without NanoCleanse®-SRB) both turned black due to SRB. Lab Study 2 Three continuous stirred tank reactors were operated with sulfate and organic feed, with nitrogen gas being bebbled to remove any hydrogen sulfide formed. The control reactor had no additive. In Reactor 2, Hypochlorite was added and in Reactor 3. NanoCleanse®-SRB was added on Day 3. The concentration of hydrogen sulfide gas was measured in the exit gas as shown in the graph below. NanoCleanse®-SRB was able to inhibit the production of the H2S significantly better than hypochlorite. On a 25 day period, based on the total H2S produced, NanoCleanse®-SRB was 60% more effective than hypochlorite..
Lab Study 3 A test was conducted at bench scale using four sealed 5-gallon containers. Each 5-gallon container was essentially a SRB landfill reactor filled with waste drywall (calcium sulfate), a nutrient source and leachate from a landfill (containing SRB) that had hydrogen sulfide odor issues. The leachate resulted in strong active SRB colonies within the SRB reactor. Nitrogen gas was continually passed through the containers to eliminate any oxygen that could suppress hydrogen sulfide production and to provide a gas flow in which hydrogen sulfide produced in the reactors could be measured. Various levels of NanoCleanse®-SRB were then added to selected containers and the hydrogen sulfide levels were monitored in the nitrogen stream from each of the containers over time. Low levels of NanoCleanse®-SRB at 0.01% (100ppm) to 1.0% (10,000ppm) controlled SRB growth and stopped hydrogen sulfide production for one day to greater than 90 days (completion of the test). The control reactor had H2S levels from 250ppm to >800ppm which was the detection limit on the H2S sensing instrument. Lab Study 4 The following experiments were conducted in 50 mL test tubes with 30 mL of wastewater. Each test tube was equipped with a tube fitted to a fritted glass piece to disperse the injected gas into small gas bubbles. The exit gas from each tube was monitored and gas composition was analyzed using a gas chromatograph. Nitrogen gas was injected into the tube, so that anaerobic conditions were created inside the liquid. Figure 1 – Untreated wastewater
Figure 2 - <3ppm NanoCleanse®-SRB These results showed that less than 3 ppm NanoCleanse®-SRB eliminated the formation of hydrogen sulfide, inhibited the formation of ammonia from about 25 ppmv to 5 ppmv, and increased methane production from about 24 ppmv to 31ppmv in the wastewater under anaerobic conditions. Applicable Industries Metalworking Fluids Industrial Cleaners Industrial Wastewater Sugar & Sugar Beet Pulp &Paper Sewers Anaerobic Digestion Electrical Power Landfills MIC Plagued Industries & Processes Any Industry with SRB or H2S Issues |
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Contact Information General Information & Sales: info@lcptech.com |
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LCP Tech Inc 8120 Indian Hill Rd Cincinnati, OH 45243 |
Phone: 513-505-3013 Phone: 513-659-5859 Fax: 270-747-7082 |
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| LCP Tech Laboratory Located At: 1776 Mentor Ave, Cincinnati, OH 45212 | ||
