|
|
★
sunxuefei(金币+1):谢谢参与
sunxuefei(金币+77, 翻译EPI+1): 2011-01-12 23:48:04
|
The researches of the various types of nutrients in the waste water were used for the culture of oily microorganism algae began only in recent years. In early stage, the culture of algae was used to achieve effective absorption of nutrients in water, degradation of toxic pollutants, accumulation of heavy metals, increased the pH and dissolved oxygen of water, and recovery of heavy metals enrichment in algae to achieve the waste-water treatment purposes. The application of algae for treatment of nitrogen and phosphorus in sewage was reported by Oswald and Gotaas in 1957. Microalgae can be cultivated by salt water, saline-alkali water, agricultural sewage, industrial sewage, Microalgae can absorb carbon dioxide released by the industrial and reduce greenhouse gases; and Microalgae also can absorb the ammonia nitrogen compounds in industrial wastes and reduce environmental pollution. In recent years, microalgal biomass energy has attracted much attention. Early in the middle of 20th century, Massachusetts Institute of Technology has begun to cultivate algal on the roof of a building on campus to produce bio-fuel, and mentioned the “algae bio-fuel.” for the first time in the research report. In 1978, the American Institute of Biological Department of Engery's Office of Fuels Development established the Aquatic Species Program (ASP) program, specializing in the research of sustainable regeneration of new energy by microalgae. The research of microalgae wastewater treatment coupled with the production of bio-fuel has been reported in recent years The influence of CO2 concentration and initial pH of the wastewater to the C. reinhardtii growth and cell dry weight were discussed by Wu Meng, and the results show that the maximum growth rate of algal cells is 20.0g • L-1 • Day-1, and N, P removal rates is 4.36 % and 5.08%.Ho and co-workers cultivated the chlorella by cow dung water, the high biomass was 5.6g/m2, fatty acids were 32.31g/m2, total nitrogen removal rate was 6 to 9%, total phosphorus removal rate was 2 ~ 9%. |
|
回复此楼