The reduced natural waters and the large amount of wastewater produced by textile industry necessitate an effective water reuse treatment. In this study, a combined two-stage water reuse treatment was established to enhance the quality and recovery rate of reused water. The primary treatment incorporated a flocculation and sedimentation system, two sand filtration units, an ozonation unit, an ultrafiltration (UF) system, and a reverse osmosis (RO) system. The second treatment included an ozonation unit, a sand filtration unit, and UF and RO systems. The color removal rate increased with the increasing ozone dosage, and the relational expression between the ozone dosage and color removal rate was fitted. Ozonation greatly reduced the color by 92.59 and 97.27 times during the primary and second ozonation stages, respectively. RO had the highest removal rate. The combined processes showed good performance in water reuse treatment. The treated, reused water satisfied the reuse standard and surpassed the drinking water standard rates for chemical oxygen consumption (CODcr), color, NH3-N, hardness, Cl−, SO42−, turbidity, Fe3+, and Cu2+. The operating cost of reuse water treatment was approximately 0.44 USD·m−3.

No abstract

No abstract

Abstract.As China enlarged the investment in agriculture, the agricultural scientific instruments promoted rapidly. It required us to face the questions scientifically such as the procurement, management, resources sharing, evaluation and etc. in agricultural scientific instruments. Because of the lack of unified classification and code standards, it greatly limited the scientific procurement, efficient management, resources sharing evaluation in agricultural scientific instruments. Therefore, the existing classification and code standards cannot meet the demand also. This paper studies and develops the agricultural scientific instruments classification and the code management system based on B/S (Browser/Server) structure and ASP.NET technology. The database used the Microsoft SQL Server, the Server application used C#， the browser based on XHTML + JavaScript. This system on the basis of database, realized the inquiring mode in the fuzzy sense of four kinds of different ways to query data in agricultural scientific instruments. And it also supports the Chinese character automatically converts spell brief-code etc. This system has a significant effect on agricultural science instrument information management and sharing .It helps to improve the assets utilization rate and can regulate the state-owned assets management system also.