污水

Protozoa could be used to improve the effluent quality, evaluate and assess the operating and function of the wastewater treatment plant.

原生动物能用来改善水质、评价和指示污水厂的运行和处理效果。

The performance and the sludge characteristics of an upflow anaerobic sludge blanket reactor were investigated for the treatment of low concentration (COD 400～600 mg·L-1) domestic wastewater at psychrophilic temperature (15±1℃).

考察了厌氧处理低温(15±1℃低浓度(COD 400～600 mg·L-1)模拟生活污水试验规模UASB反应器的工作状况及污泥特性。

Flocculants in wastewater treatment has become increasingly widely used, in which high-performance composite coagulant in water treatment technology occupies an important position, to that end, research synthesis of a new type of high-performance composite PFS purificant PISC, and dying, coal washing, paper and municipal sewage and other industrial wastewater purification experiments confirmed that the water purification agent with the exception of turbidity, detreated reduce COD, BOD5 and SS functions.

在废水处理方面絮凝剂已越来越广泛地被应用，其中高效复合混凝剂在水处理技术中占有十分重要的地位，为此，研究合成了一种新型的高效复合聚铁净化剂PISC，并对印染、洗煤、造纸和城市污水等工业废水进行净化实验，证实该净水剂具有除浊、脱色、降低COD、BOD5及SS的功能。

The invention belongs to the technical field of environmental protection and in particular relates to a method for utilizing the fermentation effect of microbe in remained sludge to increase the propionic acid content in organic acid which is produced under the normal temperature through replenishing carbohydrate and controlling the pH value when in reaction, the method takes the remained sludge of sewage treatment plants and mixture of urban putrescible organic waste which is produced in everyday life as raw materials.

本发明属于环境保护技术领域，具体涉及一种通过补充碳水化合物和控制反应时的pH值，以污水处理厂的剩余污泥和日常生活中产生的城市易腐有机废物的混合物为原料，在常温条件下利用剩余污泥中微生物的发酵作用提高所生产有机酸中丙酸含量的方法。

The method of the invention not only realizes the quantitative reduction, the stabilization and the resource utilization of the remained sludge and the urban putrescible organic waste, reduces the pollution of the remained sludge and the urban putrescible organic waste to environment, but also produces the organic acid which is beneficial for saprobe and the microbe which removes phosphor and nitrogen.

本发明不仅实现了剩余污泥和城市易腐有机废物的减量化、稳定化和资源化，减少了二者对环境的污染，同时产生了对污水生物除磷脱氮微生物有利的有机酸。

The permeate water from Reverse osmosis also can meet the stand of recircle cooling water, and shows the feasible of sewage of reverse only.

北海热电中水回用试验中，反渗透出水水质各项指标也达到循环冷却水标准，同时说明采用单膜法对生活污水再利用是可行的。

After 3 hours rection time, the removal of COD and NH3-N are up to 95% and to 70%;(3) A polot (0.25t/h) study of municipal waste water treatment by photocatalysis-ozonation was done in Wuhan municipal wastewater treatment plant.

结果表明，在反应3hr后，废水中COD去除率达到95%，氨氮去除率达到70%；(3)在武汉水质净化厂完成了UV/ TiO_2/O_3法处理城市污水中试研究(0.25t/h)，在停留时间为2hr时，COD出水低于30mg/L，此时吨水处理成本为2.56元。

So produced water how to reinject no damage into reservoir, is a very meaningful studying.

因此怎样实现污水的无伤害回注，是一个极有意义的研究课题。

In this experiment, COD removement is used as the macro-index to reflect the change of the activity of microbial indirectly and we expect to find the optimum concentration of the growth of microbial in the biological treatment system of sewage.

通过对比试验表明：(1)投加金属盐MnCl_2·4H_2O能够在一定程度上提高污水COD的去除率，在锰离子的投加量为0.5mg／L时，加药反应器COD去除率相对于对照桶COD去除率有4.3个百分点的提高。

Compared with other flocculants, the polymeric ferric sulfate has much better performance and characteristics, such as better adsorption, bridge erection, flocculation, floc formate fast, not easy to breaking, better repolymerization and weak corrosion. So it was widely used in the wastewater purification and treatment which contains industrial wastewater, urban sewage, water for industrial use and potable water etc.

与其它的絮凝剂相比较，聚合硫酸铁不但具有较强的吸附、架桥、絮凝沉淀性能，而且在水处理过程中有生成絮体速度快、絮体不易破碎、重聚性能好、腐蚀性小等特点，因此广泛用于工业废水、城市污水、工业用水以及生活饮用水等的净化处理。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。