Team #52766 Page 28of 42
W?? 0.1579,0.1196,0.4088,0.3137?
TCI??ciCIi?0.0354
i?14Hereinto,CR?CI?0.0393?0.10passes the consistency check. RI8.1.5 Interpretation of result
It can be concluded that in North China the weight of each processing scheme is shown in:
Figure 11:Optimization scheme of water supply in North China
The results obtained from the analytic hierarchy process can be seen that wastewater treatment and seawater desalination is main measures of adjusting water supply structure in North China .It has a great environment influence and offset the huge potential of the gap, at the same time, as long as the management system is reasonable, sewage treatment and sea water desalination plant are able to achieve sustainable development, and in the early stage about large-scale economic investment,the later will bring a huge cost advantages. So, if the North China wants to get rid of the plight of water shortage and developing healthily, must be in the future, Changing itself to rely heavily on water storage projects and Water supply allocation of water diversion project of the south to North Water Transfer Project, at the same time, set up a serious of water systems such as wastewater treatment and seawater desalination technology.
The water storage project in North China could be used for the agricultural production and resource development provide a good guarantee. At the same time,it
Team #52766 Page 29of 42
led to the development of tourism the breeding and other emerging industries. It also provide a large number of energy shortage of electricity and water. Meanwhile, we take into account that the reservoir is poor and high cost characteristics, through analysis the fact that water storage projects accounted for 15.8% of the total water supply is the best. This will not only solve part of the water problem also use the reservoir water, power generation regulating ecology, developing agriculture and so on.
Through water diversion project in North China, it could make use of the existing conditions to reduce the cost of obtaining water resources. Due to the input of the past few years, China's south to North Water Diversion Project has been fully started, so water diversion project is undoubtedly the current the cheapest and effective way to get water. In the short term, less cost can be used to obtain more water resources
But we take into account the question, which influents sustainable development in the North China region and water resources reserves in the south area, thought water diversion project for a long time, economic efficiency is not as well as the sea water desalination and wastewater treatment, We believe that the North China region in the future can be gradually reduced on the dependence of water project. Accounted for 11.96% of the appropriate.
As a large industrial area in North China, the problem of urban pollution is serious, through the establishment of sewage treatment plant, It can provide a lot of water to solve the problem of pollution in the city, at the same time, sewage treatment can also improve the quality of urban environment,residents to further reduce the cost of Medicine, At present, the environmental pollution is more serious in North China. So for the North China, wastewater treatment has great potential. Also it has the very big necessity.
After analysis, the North China should be invested in sewage treatment in the vast majority of the energy. Development of sewage treatment is both measures of environmental protection and economic benefits.
Due to technical constraints in North China, Seawater desalination initial investment is relatively high, however, in the process of sea water desalination, we can get a lot of fresh water resources. There are a lot of salt and other chemicals, and be able to form a circular economy industry. At the same time, it can also reduce the potential environmental pollution and improve economic performance. It is important that the North China region is facing the sea. The cost of access to the sea is low, however, taking into account the cost of the short term. Seawater can provide 31.4% of the water gap in North China in the future. This can meet the future water supply and the protection of the environment, and can be guaranteed to be in the range of acceptable
8.2Optimization of waterconsumptionallocation
Water allocation optimization of water resources, which should be combined with the water supply configuration optimization and from the water consumption of
Team #52766 Page 30of 42
the population,
Agricultural water consumption, industrial water consumption and ecological water consumption are comprehensively considered. Using the model, which based on water resources allocation , to optimize allocation.[7]
8.2.1 Construction of water resources allocation model
All kinds of physical elements in water resources system (Reservoir engineering, water diversion project, seawater desalination project, sewage treatment project, water resources calculation unit, river channel intersection point, etc) Generalized as nodes, through the connection between the nodes, water source system generalization network.
Water balance simulation model of water resources system is composed of basic physical elements, Physical element measurement data, the relationship between the physical elements and the system coordination criteria, solution to the problem, o the basis of the physical elements, the five parts of the state are formed.
8.2.2 Main constraint equations
1.Equation of balance of surface water capacity of the reservoir
ttXRSVit?XRSVi?1?PRSFi?is?i,d?i??XCSI???isi,d?i??iisi,d?i??XCSAi???
?is?i,d?i???isi,d?i?XCSEi???io?i,d?i???ioi,d?i?XCSOi??2. Reservoir limit
XRSVti?XRDVti?PRSUtiXRSVti?XRDVti?PRSLitHereinto,
?PRSU1itPRSU??i?PRSU2t
itPRSL1?VRSVti?1?VRDVti?1?PRSU2itVRSVti?1?VRDVti?1?PRSU2itPRSLit?PRSL1it
Type 2 denotes the limit of the level. That is when the reservoir on flood control capacity is out of the limit, Limit for flood control storage capacity limit, otherwise still with maximum capacity for ceiling.
2. Flow capacity constraints of the River channel:
3. Minimum flow requirements of the River channel:
XCSOti?XCDOti?PCSUtiTeam #52766 Page 31of 42
4. Water balance equation of the Water consumption by Unit population:
XCSOti?XCDOti?PCSLitPZWItj?XZSF1tj?is?u?j?,j??isu?j?,j?XCSIt??ld?u?j?,j??idu?j?,j?XCDIt??XZGItj?XZTItj?XZMItj5.Water balance equation of the Ecological water unit:
lsu?j?,j?PZWEtj?XZSF3tj??XCSEt??ld?u?j?,j?ldu?j?,j?XCDEt?
??lo?u?j?,j????XCTLEt?1lou?j?,j?lou?j?,j??XCSOE??XZGEtj?XZTEtj?XZMEtj??t,j
6.Calculation of Agricultural water use efficiency
7.Calculation of industrial water use efficiency
AZBAt?PZBC1?PZBC2?AZWAtjjjjPZBC3jAZBItj?PZBC4j?AZWItjPZBC4j?Hereinto,
(10)
1Qj
8.Calculation of wastewater discharge amount
9.Calculation of the discharge of wastewater reuse
XZTIt?XZTAtj?XZTStj??PZWItj?XZMItj??PZTC1j?PZTC2j?PZTC3jXZTPtj?XZW1tj?PZTC1j??1?PZTC2j??t,j
While:
XZTItj?PZTC4??XZTIt?XZTAtj?XZTStj?XZTLtj?XZTAtj?PZTC5??XZTIt?XZTAtj?XZTStj?XZTLtj?XZTStj?PZTC6??XZTIt?XZTAtj?XZTStj?XZTLtj?
10.Equation of the Groundwater water balance
jjjjjjXZGVtj?XZGVt?1?PZGDt???PZPWt???XZWAt??j?ls?u?j?,j??XCSAt??1lsu?j?,j??l0?u?j?,j???XCSDt?1ldu?j?,j??lg?u?j?,j???XZGOt?1lgu?j?,j???XZGItj?XZGAtj??lg?t,d?j????XZGOt?1lgj,d?j??jj??j??XZGVt?1?XZGVt?
Team #52766 Page 32of 42
11. Limit of Groundwater mining
1XZDItj?XZGAtj?PZGUj?PZGCj12
8.2.3 Model Solution
In this paper, we based on the established model and the past method, combined
with the adaptive scheduling method of the reservoir, propose an adaptive reverse calculation method. Combined the weight among with reservoir engineering, water diversion project, water desalination, sewage treatment, and adjustment of industrial structure and methods of water-saving, we determine the results based on the local water resources carrying capacity.
The model using GAMS language as establishing water resources system configuration model and its se basic programming language, plans every level year in simulation process of Water resources allocation model, calculating all the 2008 - July 2014 older series, for years as the calculating time, each computing time configuration process is consistent. Figure 1 for the long series calculation flow chart
Figure 12:Long series calculation flow map
Using GAMS programming can get the water supply and water conditions. See table 10