Adaptive control model of water resources regulation in the Yellow River

Torelieftheconflictbetweenwatersupplyanddemandandtoeffectivelycontroltheever-serioussituationofflowinterruptionintheYellowRiver,theStateDepartmentauthorizedtheYellowRiverConservancyCommissionforunifiedregulationofwaterresourcesandalsoquantifiedthewaterproportionforeachprovinceandthetotalnum-berofuseablewaterresourcesofthewholeriverunderaveragemulti-yearconditionsinDecember1998.However,theallocationschemeofwaterresourcesbytheStateDe-partmentisonlyconfinedtotheregularinflowsituations.Thereis…     

Orthogonal analysis of water model study on the optimization of flow control devices in a six-strand tundish

Improper flow control devices in a multi-strand tundish can cause some problems, for example, liquid steel cannot reach every nozzle at the same time and the liquid steel in nozzles far away from the entry zone has a lower temperature. The water model experiment of a six-strand tundish of Tianjin Iron ＆ Steel Co. Ltd. was performed, a new ＂U＂ type baffle was obtained, and its parameters were defined by perpendicular analysis. The ＂U＂ baffle can not only improve those imperfections, but also prolong the residence time of nonmetallic inclusions, which is good for their flotation and separation.     

Analysis of the Applications of Composition in Architectural Design——A Case Study of Meyer＇s Architecture

探讨构成手法在建筑设计的应用,指出手法与构成二者是建筑创作的源泉,是相互联系的.以迈耶的建筑作品为例,从均衡与规律、空间的穿插、化体为面、立体主义等视角分析了构成在建筑设计中的应用,并剖析构成在建筑设计中的空间内涵,旨在给今天的建筑设计师一些思索.     

Study on the groundwater exploitation test in the Yellow River lower reaches——Acase studyon the north suburb waterworks of Zhengzhou,China

TheYellowRiver(YR,inChina)isthemostimportantriverintheworldthatcar-riesthehighestrateofsuspendedsandcontentinitsstreamflow.TheYellowRiverisknownworldwideasthe“hangingriver”.ThemoderndepositsoftheYRismainlycomposedofsiltandmudandwaterbearingpotentialisveryweak.DuetotherelativelyhighaltitudeoftheriverbedoftheYellowRiver,peoplehavethenbeenusinggravityforcetodivertwaterfromtheriver,andsatisfytheirwatersupplydemandssincetheantiquity.Fromthe1970s,theextensivewaterdevelopmentconsequenttoanincr…     

Study on Character of Micro-Canal Deposit and Its Significance in Petroleum Geology——Case study of Tuo-147-well in north zone of Dongying depression

Grain- flow is a kind of subaqueous flow,itmainly depends on friction and collision amongsandy grains and flows along subaqueous slopethrough the gravity of itself.Generally,the config-uration of deposit glutenite bodies including grainflow is sector,tongue,or groove in shape.Usual-ly,there exists the main canal deposition atthe up-side and middle partof the source area and becomesdisappeared,thinned- out,and fanned- out graduallydownwards.During analyzing the core from Tuo-1 47- well the auth…     

Study on Character of Micro－Canal Deposit and Its Signficance in Petroleum Geology——Case study of Tuo－147－well in north zone of Dongying depression

Exploration on reservoir of glutenite segment in steep slope zone of half graben-like basin is one of the hot spot targets at present and in the future for new reservoirs; And the study of sediment character of sandy-conglomerate bodies is the keystone and also the difficult problem. Taking Tuo-147-well area in north zone of Dongying depression as an example, the micro-canal sedimentation was researched. The result shows that many micro-canals exist at the end of slope grain-flow in steep slope zone of half graben-like basin; The micro-canals grow at the end of subaqueous grain-flow deposited bodies of 3rd member of the Shahejie formation. The main condition of micro-canal formation is the slope angle less than 18“ and a long suitable sedimentary slope. These micro-canals may communicate the reservoir of glutenite segment in steep slope zone and the hydrocarbon stratum as a bridge role. Therefore, it is significant in theory and practice for discovering a series of micro-canals at the end of slope grain-flow in steep slope zone of half graben-like basin.     

徐州市污水回用现状及对策

通过分析徐州市水资源利用现状和污水回用必要性,指出徐州市目前实施污水回用所面临的主要问题,建议政府应该尽快制定污水回用规划,支持污水再生利用的技术研究和评价,努力扩大再生水的应用领域.     

城市中水系统规划优化模型的研究

针对国内外污水(再生)回用的发展状况，在分析中水系统各部分费用关系的基础上，将中水系统纳入给排水系统进行综合规划，建立了城市中水系统规划的数学模型，结合华北某城市拟建的中水系统，进行了实际的规划计算，表明模型完全可行，能全面协调中水系统内各部分之间的相互关系，满足水量供需平衡，能合理分配各种水资源，使整个中水系统的总费用达到最小，具有明显的经济效益。     

MBR反应器出水水质研究

研究膜生物反应器（Membrane Bioreactor简称MBR）污水处理出水水质，是该工艺推广应用的关键问题之一。采用淹没式MBR工艺，系统运行稳定，并在前期工作采用MBR工艺处理合成污水实验考察其效能基础上，采用MBR工艺处理实际生活污水，实验结果表明：出水BOD5≤1.0mg/L,NH4^ -N≤1.0mg/L，最后通过对MBR工艺不同操作条件下出水水质参数进行对比分析，研究了膜生物反应器出水回用的可行性。     

浅析水资源再生利用在西部大开发战略中的重要性

分析了我国及西部地区水资源现状,指出水资源再生利用是解决西部干旱地区水资源短缺的重要手段,阐述了水资源再生利用在西部大开发战略中的重要性。     

中水回用技术的研究现状与应用前景概述

针对目前中国水资源紧缺的现状,结合中水回用技术在国内外的发展概况,介绍了主要的中水回用技术,分析了目前国内中水回用技术存在的问题,并提出相关建议。阐明了中水回用技术在解决中国乃至世界的水危机问题上所起的举足轻重的作用,指出该技术在国内的发展刻不容缓,是实现水资源可持续发展的有效途径。     

浙江省污水资源化可持续利用对策

污水资源化是解决水资源短缺的重要途径,也是水资源可持续发展的必由之路.本文首先介绍了浙江省水资源的严峻状况,指出污水资源化是解决当前浙江省水资源短缺和污染的一项有效途径,提出浙江省污水资源化可持续利用的建立系统的规划、完善法规与制度、注重技术的创新和技术推广等相关对策,为加快浙江省污水资源化进程的提供相关建议.     

亳州水资源可持续利用的探讨

根据毫州市水资源短缺与污水处理设施水平,探讨水资源可持续利用的途径.     

巢湖市水资源开发利用现状及对策

文章以2005年为例,从水量、水质及工、农业用水情况等方面分析了巢湖市水资源开发利用现状,并对工、农业节水以及水污染治理等方面提出相应对策.     

佳木斯市水资源评价

对佳木斯市的地表水资源、地下水资源、水资源总量。地表水资源可利用量、地下水资源可利用量、水资源可利用总量及其分布特征进行了估算评价，以期为佳木斯市的水资源管理和保护及开发利用提供科学依据。     

再生水资源成本价格模型的构建

再生水资源是水资源的一种特殊形式，它的价格是影响污水回用的重要因素之一，再生水价格有多种形式，为了与我国现行的自来水价格相一致，论文以制水成本为依据，借鉴给水厂工程投资和输水管网的费用函数，建立了再生水资源的成本价格模型，并应用模型进行了模型工程的实例计算，这一模型可为制定再生水的价格提供参考．