Cyanuric Chloride, High-salt Wastewater Treatment Technology

As China's industrialization process accelerated, many industrial fields produced high-salinity wastewater, such as dyeing, papermaking, chemical production, pesticides, oil, seafood processing, such wastewater contained high concentration of organic pollutants normally, and direct discharge can cause serious environmental pollution. High-salinity organic wastewater was not applicable to biological treatment because of the poisoning effect. Nowadays, the existing methods such as electrodialysis or reverse osmosis were disadvantage due to the high energy consumption and the bad economic. How to achieve high-salinity organic wastewater successful treatment was one of the difficulties. In this study, Cyanuric Chloride High-Salinity Wastewater was used as research subject to find reasonable and effective treatment channels, which contained high concentration of organic pollutants and NaCl. At the foundation on the survey of technology and information at home and abroad, reference the new technologies about the high-salinity organic wastewater treatment at home and abroad in recent years, combined with our existing problems, adoption enhanced treatment of high-salinity organic wastewater by complex halophilic bacteria. First of all, bacteria were isolated from the environment, which adapted to high salt and degrade organic pollutants efficiently, and was complexly cultivated to complex bacteria. The second, the impact of environmental factors and nutritional factors on the growth of complex halophilic was researched, as well as the degradation of TOC. Finally, complex halophilic bacteria were used to the enhanced treatment of Cyanuric Chloride High-Salinity Wastewater, with emphasis on accelerated halophilic bacteria to speed-up rate of the anaerobic reactor startup rate and improved the system to deal with the effect of pollutants was studied.The main results are as follows:1. Many bacteria isolated from mixed sludge, which adapted to high salt and degrade organic pollutants efficiently. Bacteria were complexly cultivated to complex bacteria in order to improve the stability as well as diversity, and improve t efficiency of the degradation of organic compounds.2. The impact of environmental factors and nutritional factors on the growth of complex halophilic bacteria was studied. The conclusions were used to guide the expansion of complex bacteria. The main conclusions are as follows:(1) Complex halophilic aerobic bacteria glowed best When Temperature, pH , rotation speed were 35℃, 8.5, 120rpm, respectively. complex halophilic anaerobic bacteria glowed best when Temperature, pH were 38℃, 8.5, respectively. Temperature and pH had an significant affect on the growth of anaerobic and aerobic halophilic bacteria.(2) The impact of medium carbon source, nitrogen source, as well as the different content of K⁺, Mg²⁺ on the growth of complex halophilic bacteria was investigated through single factor test and orthogonal test. The results show that the composite for every 100mL medium contained yeast extract 0.8g, peptone 0.6g, KCl 0.25g, MgSO₄·7H₂O 1.5g was the best nutritional condition for halophilic bacteria.3. The experimental studies about the degradation of TOC were designed to provide technical support for the later pilot-test follow-up. The main conclusions are as follows:(1) The temperature of Anaerobic process and aerobic process should be maintained at 35℃, The pH of biological system influent should be controlled at 8.5 ,respectively.(2) the organic load of Cyanuric Chloride High-Salinity Wastewater which had been treated by the pretreatment should be controlled at 300 - 400 mg / L; the proportion of investment for halophilic bacteria should be around 30L/m³; throwing quantificational KCl to Cyanuric Chloride High-Salinity Wastewater in order to maintain the high activity of halophilic bacteria.4. The effect of complex halophilic bacteria on the start-up of anaerobic reactor and the bioaugmentation in the biological treatment of high-salinity organic wastewater was studied through a Pilot-scale experiment, what Designed for Cyanuric Chloride High-Salinity Wastewater bioaugmentation engineering construction, as well as the feasibility of other high-salinity organic wastewater bioaugmentation, to provide basic theory and practical and academic foundation.The main conclusions are as follows:(1) The start-up of the anaerobic reactor can be accelerated (to the point where the period limits to 70 days) by adding complex halophilic bacteria.(2) The removal of TOC by the biochemical system was greatly improved (from 50% to70%) after the adding of complex halophilic bacteria.(3) It was entirely feasible for Cyanuric Chloride High-Salinity Wastewater bioaugmentation, and its application would be able to generate enormous environmental protection and social benefits.