驯化培养降解糖蜜酒精废液的菌种，在优化条件下，微生物降解糖蜜酒精废液中的有机物，可生产作饲料蛋白的酵母菌体，分离废液中的菌体后，用壳聚糖进行吸附处理，coDcr去除率达63%，脱色率达79%，基本上能达标排放，且处理每lL废液可得干饲料蛋白l0.86g。

the sludge organic complex fertilizer (Socf) for sugarcane, which contains 14.3% of itrogen, 4% of phosphoms oxide and 5% of potassium oxide. is made from municipal sludge after aerobic andzanaerobic fermentation by adding nitrogen, phosphoms and potassium properly Field experiinents show that: (1)Various fertilizers have a very weak influence onthe emergence rate, effective stem and sugar rate of sugarcane; (2)The output of sugarcane varies with the amount of SOCF applied infield and it is optiIllUm to apply 2 400kg ofthe fertilizer per hectare (3) 1he fertilizer effect of SOCF is superior to that of general complex fertilizer sold in nlarket and mixed fertilizer of urea, calcium-magnesium phosphate fertilizer and potassium chlonde when 2400kg of SOCF is used per hectare in field

在对广西兴安钨矿选矿废水水质分析的基础上，分别选择三氯化铁、精制硫酸铝、三氯化铝、聚合氯化铝和聚丙烯酰胺（PAM）作混凝剂进行了混凝沉淀试验，综合考虑处理效果即出水COD和浊度以及成本三氯化铁最为合适 三氯化铁的最佳投加量为合适；三化铁的最佳投加量为120mg/L，出水水质符合国家污水排放标准并能回用。最后提出了工程设计方案，此方案既防止了废水对环境的潜在污染，又解决了枯水期选矿用水不足的问题。

The speciations of antimonY in the Prote rozoic E ra fPt and Sinian Pe riod fz rocks in Hunan. China were studied using pa rtiaI dissoIution techniquas The totaI antimony concantration in the rocks was divided into four fractions: exchangeabIe bound-to-carbonates bound-to-sulfidas and residuaI The fraction bound to sulfides and exchangeabIe fraction are dominant and amount to about 30% to 56%and 9% to 29%. resPectiveIY The fraction bound to ca rbonates is Iass than 3% of the totaI Ou r experiments show that about 40% to 100% antimony are easiIY rePIaceabI incIuding exchangeabIe fraction and bound to sulfidas We suggest that the strata P robablY Pl rovided metal antimony for the antimony deposits in Hunan, china

Guilin is a typical karst area where the hydraulic proximitv between surfaca water and ground water is close From the point of environ-mental conservation,karst aquifers are more vul-nerable than non-karst aquifers because their underground conduits provide no filtration There-tore, it 1s necessary to pay close attention to con-tamination from heavy metals in the groundwater if a sludge fertilizer. which USUaUv contains relatively large amount of heavy metals. is applied to the land surfaca in this area To determine the effect of sludge fertilizer and the possible toxicitv of heavy metals when the sludge of municipal wastewater is used in agriculture, a series of experiments was undertaken Firsfly, sludge was extracted from the sewage treat-ment plant of Guilin and the plant nutrient and heavy metal was than analyzed Secondlv'a complexorganic fertilizer of sludge (OCFS) was produced This OCFS was applied to rice land to determine itseffect as a ferilizer Lastlv. the heavy metal contents of agricultural products after application of OCFS were studied It ws shown that (1)there were large amounts of plant nutrients in the sludge: on average it contained 396%organic matter The content of total nitrogen, phosphorus, and potassium was 48 3, 21 1, and 85g/kg on average, respectively The heavy metal contents ofthe sludge are in accordance with the National Standard and, basicalh the sludge is suitable for agricultural application f2 The fertilizer of sludge was effective The output of rice was increased by 1819% when OCFS was used The effect of sludge fertilizer was better than that of a complex fertilizer sold on the market When sludge fertilizer was tested against others on the market, no difference could be found in the heavy metal content ofthe rice and rice stems Therefore. sludge fertilizer can be assumed to be safe and effective for agricul-ture f3 The extraction rate of heavy metals ranged from 23 to 60% when the sludge was extracted by O 1mol ofEDTA,i e, 23 to 60% ofmetals maybe absorbed by plants