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According to United States environmental protection agency statistics, using the recovery of copper from waste home appliances instead of mining, transportation, and refining of new steel, it can reduce 97% of mine waste, reduce air pollution 86%, 76% water pollution, reduce the consumption of 40% water, save 90% raw materials, 74% energy, and properties of new steel products and steel scrap are basically the same.
The third party reverse logistics enterprises often provide professional improvement constitute recommendations from the perspective of reverse logistics in product design, raw materials in order to facilitate the recycling of demolition process, which is helpful to optimize product design and production processes.
Under the condition of government regulation, establishing a joint reverse logistics system, it not only can reduce pressures on reverse logistics system of individual enterprise investment, play a professional technical advantage, achieve scale ,and also can realize mutual benefit and win-win by providing cheap raw materials sources .
Joint operation is associated with a certain degree of economies of scale, and reducing product recycling distance, and logistics costs; the same production sharing an information system can save construction cost of information system; Professional advantage.
Disadvantages: information feedback of manufacturer product recall are not timely and accurate enough, which are the constraints of calculating enterprise reverse logistics cost and technological improvements; and the logistics management level is difficult to catch up with the professional reverse logistics company because of the experience, the equipment and capacity constraints.

The wall system performance was also evaluated in terms of its water-tightness.
Buildings hygrothermal performance has been a subject of great demand, by construction professionals, as regards the new construction and rehabilitation.
Water tightness test The water tightness test procedure applied is in accordance with the Brazilian standard NBR 15575-4, Annex C (2013).
Figure 3 – Hydro gypsum walls for water tightness tests.
Two walls of 1360x2600x100 mm3, in masonry of solid hydro gypsum blocks (see Figure 5), were used, one with 0.1% of water repellent additive and the other one with 0.3% of water repellent additive.

The six subjects were: Design (including fire strategy), Structural (including structural fire safety), Building Services (energy), Soil and Water mechanics, Urban planning/ Construction Management/ Facility Management, and Design Manager/ ICT Coordinator.
Multidisciplinary teaching - Engineering course in advanced building design, Journal of Professional Issues in Engineering Education and Practice, accepted for publication, 2010
Educating the 21st century construction professionals, Journal of professional issue in engineering education and practice, 2002

The Xing'an ecological function area is an important water conservation forest ecosystems base of China, priority must be given to its planning sustainability of ecological benefits.
The Xing'an ecological function belonged water conservation type eco-functional area, with the multiple roles of water conservation, soil conservation and protection of biodiversity.
Just as On the mountain one lives by mountain products；near the water one lives by the products of the sea.
To carry on the community Co-management, the government should send professionals to educate communities first to make community residents to conduct in-depth knowledge and understanding of the ecological resources of the core area, and explicitly allows a range of economic activity and project.

Besides these, there are professional groups prepare practical propositions they can apply on federal level.
Further slag treatment takes place in the rest-bed by water spraying.
The primary goal of these test was to examine the interaction of slag and water.
We provided a stable amount of water through the system with the help of a pump.
After some time elapsed we took slag samples from the tubs and water samples from the rinsing water which we analyzed.

Introduction The main aim of undergraduate graduation design is developing the students' comprehensive ability using basic theory and professional knowledge to solving usual projects problem and improving capability of theoretical analysis, engineering drawing, computer skills and foreign language further.
The undergraduate graduation design is usually scheduled at the last of undergraduate studies, while students are equipped with basic theory and professional knowledge.
Nevertheless, bad subjects can’t excite the student's interest nor attain the aim of educating basic theory and professional knowledge.
In recent years, there has been an increase of topics about gas system layout, gas station design, design of gas transmission pipelines, air-conditioning design and water supply network design.
(1) Topics those were about gas system layout, gas station design, design of gas transmission pipelines, air-conditioning design and water supply network design improve student's ability to have the great help for future jobs

The total COD removal efficiency of the combined process was 86.6% and the COD of effluent could satisfy the professional emission standard (grade-2) of textile and dyeing industry of China.
But no method alone was effective enough to meet effluent limits for release into local surface waters.
Grau: Water Sci.
Santosh: Water Res Vol.35 (2001) , p. 2129–2136 [6] Delee, W., O’Neill, C., Pinhero, H.M.: Chem.
Zhang: Water Science and Technology Vol.34 (1996) , p.49–55 [13] X.Z.

However, the simple function of supplying water cannot suffice for the delivery of hot water.
The sustainability of a hot water supply, the consistency of temperature, the water constancy, and the speed of the flowing water are also for demand[1].
For the best water management, there is an urgent requirement for the remote monitoring for boilers.
Its main purpose is to enable professionals to monitor more boiler equipment so that to improve efficiency and ensure system security.
It is nonetheless important research, for it impacts the welfare of the many people who have come to rely on a consistent supply of hot water.

The adobe bricks and the timber are the local materials, and the houses are built no professionals involved in design.
Solar energy water heater should be installed in the slope roof.
With the help of the solar panels, solar heat can be collected to heat cold water stored by the water storage tank.
Through the pipeline, the heating water will be transported to toilet and kitchen, which can ensure enough warm water for use at ordinary times.
According to the lack of water resources in some part of this region, we should consider the design of rainwater recycling.

Professional persons organize staff to sweep the old pavement, the old pavement pothole is filled up with 80% 1-3cm stones and 20% lime soil fill with 12% lime.
Recycling machine must be followed with professionals who check recycling depth, cement content and water rate at any time, and coordinate the machine operator to adjust the machine.
In the process of rolling, surface of the recycled mixture should always be wet, in the condition of its rapid evaporation, should spray water in time.
Rolling forming section should close traffic and water curing in time.
The marching speed of watering car keeps 20 kilometers per hour and can not turn over and brake and stay in curing section, besides that the curing time should not be less than 7d.