In recent years, air pollution is becoming more and more serious in some cities of our country, which is one of the main causes of air pollution.Dust suppression agent can effectively suppress dust and other particles into the atmosphere in order to improve the environment.In this paper, a composite type of dust suppressant was prepared by blending polyvinyl alcohol and acrylic acid.The experimental results show that the ratio of material to 1:5 is 1 (10-2mol/L) and the polymerization rate is 2h.

With the development of economy , the environment problem is increasingly outstanding .With more severe atmospheric pollution , dust suppression agent can effectively inhibit dust and other particles into the atmosphere so that the environment was improved .Dust suppression agent is mainly introduced in this paper , several common types of based on dust suppression agent with dust wetting , cohesion , binding mechanism , agent of various types of dust suppression system introduced and its application status and research progress .

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以生物柴油脂为主要原料,在乳化剂作用下掺水制成乳化油。初步探讨了乳化剂用量、稀释倍数、防锈蚀剂的添加量对脱模剂质量的影响。生产实践表明,乳化剂最佳用量为4%,稀释倍数9倍,防锈蚀剂的添加量为2%。由此制得的乳化油脱模剂稳定性好、脱模性能好,对钢模无锈蚀危害。产品用于混凝土工程效果良好,是环保型产品。

Recently, the technology of closed circle and zero discharge has become one of the important research projects on treating technology in paper mill effluent. Many foreign pulp and paper enterprises taken waste paper as raw mate- rial have realized zero discharge. In China, the research and practice of zero discharge technology for enterprises using waste paper as raw meterial also see a rapid development. The process of cavitation flotation process (CAF) is a new flotation process with the advantages of being small in equip- ment volume, low in investment, small in floor space and low in energy consumption and the zero effluent discharge for paper mills can be realized by circulation and reclamation.

The low temperature solidification epoxy powder coating was researched and manufactured to drop the painting temperature of powder coating and make it can be painted on the sensitive material.The choice of the synthetic resin,the curing agent,the pigment,the filler and the auxiliary agent was discussed and the formula composition was chosen by tests.The formula and process of the low temperature solidification epoxy powder coating were determined.It's perofmance was analyzed and examined.The resnlts show that the curing temperature of the low temporature solidification powder coating can drop to 110℃.The powder coating can be painted on the surface of hot sensitive material.

Elaborated our country building materials industry implements the clean production the necessity.Proposed the building materials industry implements the clean production the mainway.Implements the project practice which for the building materials industry the clean production provides may refer.

<正>河北省第七届党代会明确提出了建设沿海经济社会发展强省的宏伟目标,促进沿海经济隆起地带经济快速崛起。我国的国民经济和社会发展的"十一五"规划纲要的环境指导原则指出:"必须加快转变经济增长方式,要把节约能源作为基本国策,发展循环经济,保护生态环境,加快建设资源节约型、环境友好型社会。促进经济发展与人口、资源、环境相协调。"2006年4月召开的第六次全国环境保护大会上,温家宝总理强调,把加强环境保护作为调整经济结构、转变经济增长方式的重要手段,在保护环境中求发展。

以Al2TiO5微细粉、SiO2-Al2O3微细粉为原料,外加6%(质量分数,下同)PVA结合剂,100 MPa压力成型,1400 ℃保温1 h烧成,制备出低热膨胀系数,抗热震性能优于SiO2-Al2O3材料的Al2TiO5-SiO2-Al2O3复合材料.对复合材料的性能测定分析,研究不同的Al2TiO5含量、烧结温度等对Al2TiO5-SiO2-Al2O3复合材料性能的影响,获得了制备性能优良的Al2TiO5-SiO2-Al2O3复合材料的最佳工艺参数.

聚氯乙烯生产的工艺过程、设备设施以及物质特性造成聚氯乙烯生产事故具有以下特点:火灾、爆炸、中毒事故后果严重;正常生产时事故发生多;事故具有集中性和多发性等.因此,防范事故的发生是聚氯乙烯生产安全生产管理的重点,而危险有害因素的辨识是此项工作的基础.

Induced the sepiolite mineral applied research achievements,introduced the developments of the sepiolite research in the environment,agricultural,the agricultural products process pollution,in the chemical catalyst and carrier application,building new materials in china and so on.

研究原子吸收分光光度测定蜂蜜中铅含量的分析检测方法.实验表明,采用灰化法处理蜂蜜样品,用石墨炉原子吸收法测定蜂蜜的铅,精密度好,精确度高,能够满足日常分析要求.

The transfer of land cleared and the soil cover,water purification biological technology,and artificial planting a combination of natural plant community building and transforming mining subsidence,the mining subsidence can be built urban wetland ecosystems.

以餐饮业废油脂为主要原料,通过乳化剂作用,掺水制成可自乳化的乳化油。初步探讨了乳化剂用量,稀释倍数,防锈蚀剂的添加量对脱模剂质量的影响。试验表明:乳化剂最佳用量为6%,稀释倍数8倍,防锈蚀剂的添加量3%。由此制得的乳化油脱模剂稳定性好,脱模性能好,对钢模无锈蚀危害。产品用于混凝土工程效果良好,实现了对餐饮业废油脂的综合利用。

Has studied in the atomic absorption spectrophotometry honey lead content analysis examination method. The experiment indicated that uses the cineration law processing honey sample, with the graphite oven atom absorption law determination honey's lead, the accuracy is good, the precision is high, can satisfy the daily analysis request.

实验研究了改性焦渣复合吸附剂热处理印染废水时各种因素的影响,结果表明:用十二烷基苯磺酸钠溶液改性焦渣并与活性炭质量比按10∶1制成复合吸附剂,处理印染废水,在吸附剂用量为废水量0.4%,pH值控制在6,废水水温20℃,吸附时间20m in的实验条件下,脱色率达90.8%,COD去除率达84.8%,SS去除率达到90.2%,处理效果良好。

针对废水在好氧阶段具有返色的特点,设计了用曝气生物滤池替代活性炭过滤处理豆制品加工废水的深度处理工艺,进行了填料的筛选试验,同时试验研究了在海绵铁与陶粒混合质量比为1∶3、HRT=1.0h时其对CODCr和色度的去除效果。研究表明:曝气生物滤池对CODCr、色度的去除率均能达到40%以上,运行效果稳定,并得出了向海绵铁中加入陶粒可有效地避免填料板结的结论。

Study of the various factors dyeing wastewater treatment by sepiolite/fly ash composite adsorbent. A lab for the dyeing wastewater experiment was carried, the ratio of sepioliteto pulverized coal ash is 3∶1, the results show that:the amount of adsorbent is 0.3% by wastewater quality, the adsorption time 40 min, under the above experimental conditions, the color removal effciency can get 90.0% and CODcr removal effciency exceed 85.7%, SS removal rate reach 90.3%.

A new kind of cleaning agent for vehicle windshield was studied by using water,ethanol,several surfactant and auxiliaries.The cleaning agent doesn't have irritant smell,the pH value is neutrality.The freezing point is low enough to use in northern winter.The cleaning agent showed good rust resistance.The clean effect is excellent.The indexes were even better than import samples but lower cost.

Sample of propolis was digested with conc.HNO3 and conc.HClO4 mixture,until the color of solution turned to colorless or light yellow and fumed with HClO4.The solution was diluted with 0.5 mol·L-1 HNO3 and used for AAS determination.Linear regression equation of the calibration curve was found as A=0.001 6 C+0.006 3(r=0.999 8).Detection limit(S/N=3) of the method was found to be 0.04 mg·kg-1.The proposed method was used in the analysis of substantial samples for the lead contents,giving value of RSD(n=6) 1.0%,and values of recovery in the range from 76.0%-105.0%.