The twenty-eight bacteria are cultivated and put back into waste water,the average unoiling rate can achieve to 68%.

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There is a big problem that too much sulphur is wasted in lead bullion pyro-refining process by adding sulphur directly in northwest metallurgy of lead and zinc factory. As to the problem, a new method to decopper from lead billion through changing sulphur to PbS is invented.

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On the basis of denitrifying phosphorus removal theory, the mechanism and process of denitrifying phosphorus removal were summarized and the capability of denitrifying phosphorus removal was compared with conventional process.

在介紹反硝化除磷理論的基礎(chǔ)上，對反硝化除磷機(jī)理和工藝作了綜合概括国产一级淫片A片AA片男，并與傳統(tǒng)好氧除磷進(jìn)行了比較99re热免费视频，重點(diǎn)說明了反硝化聚磷菌的研究現(xiàn)狀和最新反硝化除磷工藝的特點(diǎn)。

The removal rate of ammonia nitrogen was proportional to that of phosphorus,but it was limited by the phosphorus concentration.

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This experiment research is that when they were used in the Bermuda grass turf the Caopingning-51 herbicide and Caopingning-71 herbicide controlled the effect of weed which the Caopingning-51 herbicide and Caopingning-71 herbicide were used by way of solitude and combination.

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Many kinds of treatment are used for fluoride removal. Conventional methods including coagulant sedimentation, active alumina adsorption, bone char adsorption are not suitable for rural areas owing to operation and management. Membrane methods for defluoridation, such as electric infiltration and reverse osmosis, have the advantage of convenient application, simple operation and good adaptability.

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Chemical raw materials: include a variety of plating materials and metal surface treatment agent: sodium such as tin, stannous chloride, pyrophosphate Asian tin, copper sulfate, nickel acetate, copper acetate, nickel fluoride, cobalt sulphate, acetic acid cobalt, hydrofluoric acid, anion exchange resin, cation exchange resin, scale inhibitors, cleaning agents, detergents,the phosphating agent, plate washer water, with the exception of Prince agents, rust removal agent, the American Iron and Steel room temperature blackening agent, on behalf of behalf of the black-white (open cylinder agents, supplements), and alloys such as gun color..

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Chemical raw materials: The main raw materials include a variety of electroplating and metal surface treatment agent, such as acetic acid in the Czech Republic, nickel, copper acetate, nickel fluoride, cobalt sulfate, cobalt acetate, hydrofluoric acid, Yunnan tin sodium, Taiwan's Ya-tin pyrophosphate, oron the anion exchange resin, cation exchange resin, scale inhibitors, cleaning agents, detergents,the phosphating agent, plate washer water, with the exception of the Prince of water, oil derusting water, the United States steel at room temperature blackening agent, on behalf of behalf of the black-white (open cylinder agents, supplements), and alloys such as gun color.

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The computational fluid dynamics method is used to simulate numerically the two phase flow of gas and liquid in a demister with corrugated baffle. The demisting efficiency and pressure drop under various droplet diameters, gas velocities and plate spacings are provided. The effects of main design parameters on the demisting efficiency and pressure drop are analyzed.

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