The new campus of shandong jianzhu university is located in the eastern industrial belt of jinan city, with an advantageous geographical location. The campus is planned to use 138 hectares of land, with a construction area of 1.38 million square meters and a planned construction area of 815,600 square meters. So far, it has completed the construction of 440,000 square meters of school buildings in the first phase and part of the second phase. A number of ecological design methods and new building technologies have been adopted in the construction, and renewable energy sources such as solar energy and geothermal energy have been fully utilized. Valuable experience has been gained in the field of "four sections and one environmental protection".

Land and space use

The campus planning and design of the new campus are based on the natural terrain, the requirements of university campus functions and the connection with urban planning. The relatively flat and open areas in the base are used to build relatively independent areas for office, teaching, research, living, sports and development. Due to the large functional area requirements and limited land use, the layout of functional buildings is compact and concentrated, reflecting the efficient theme of the network era.

In view of the characteristics of the undulating terrain in the base, it is necessary to make full use of the new "landscape" in the valley and gully of the base in the construction process to greatly reduce the amount of earthwork, save labor and shorten the construction period. For example, there is a north-south gully in the southeast of the original campus, which is the "one valley" in the natural terrain of the campus. This gully is used to set up three-dimensional traffic and underground parking lot, so as to realize the separation of people and vehicles, improve the utilization rate of land and reflect humanistic care. At the same time, part of the underground space formed by this gully is used as the room for the engineering training center, which not only saves land resources but also expands the building area, reduces the amount of earthwork and landfill, and effectively reduces the construction cost.

Research on natural lighting design of teaching building and office building using semi-underground space; In the process of campus construction, the teaching building and office building using the semi-underground space are equipped with lighting and ventilation corridors, which not only guarantee the sunshine, lighting and ventilation requirements of the semi-underground space, but also improve the half

The use efficiency of underground space can reduce the additional energy consumption caused by the lighting and ventilation of semi-underground space and effectively reduce the operating cost.

In the process of campus planning and design based on the reasonable layout of the buildings follow nature environment view, multi-level spatial organization technique, theme landscaping plants and artificial waterscape design three-dimensional configuration principle, ecological water measures are widely used, finally realizes the campus landscape, ecological integrated the true, the beautiful scenery and elegant style of landscape architecture, and effectively improve the environment of campus.

Water resources protection and conservation

1. Optimized design of cascade utilization of water resources
Campus water resources mainly include direct drinking water, domestic water, campus miscellaneous water, landscape and greening water, etc. In the process of water resources utilization, according to the principle of high quality, high use, low quality and low use, the implementation of quality water supply, the use of water supply and drainage system optimization design, to achieve the cascade utilization of water resources.

At present, the campus has a green area of 480,000 square meters, with about 790,000 trees of all kinds. Through the optimization design of water resource cascade utilization, while meeting the daily water demand of teaching experiment, teachers and students' life, greening irrigation, road cleaning, etc., the municipal tap water supply can be saved about 2,000 cubic meters per day.

2. Sewage treatment and reuse of reclaimed water
From the perspective of construction investment, operation management, effluent effect, operation cost and scientific research needs, sewage treatment process based on biological contact oxidation method is adopted, which is stable in operation, good in treatment effect and simple and convenient in management. In order to improve the effect of oxidation treatment

In addition, the hydrolytic acidification process is added before the oxygen biochemical treatment to reduce SS in sewage, improve the biodegradability of sewage, and improve the removal effect of the whole process. Before the biochemical effluent enters into the sedimentation tank, it is coagulated with drugs, and the effect of phosphorus removal can be achieved by separating the solid from the liquid. The precipitation effluent then enters the biological aerated filter (BAF) to further remove organic pollutants such as COD and ammonia nitrogen, so as to ensure the standard of organic pollutants in the effluent. Then, the effluent of BAF is further filtered and disinfected to meet the requirements of urban miscellaneous water quality. The sludge generated in the sewage treatment system is discharged into the sludge tank by the hydrostatic pressure method, after which the sludge is pumped to the belt type concentrated filter press, and the supernatant of the mud cake pool is returned to the regulating tank for reprocessing.

Reclaimed water is mainly used in student dormitory buildings and most teaching buildings for flushing and flushing with reclaimed water. The artificial water body of the campus is replenished, and the water supply of the artificial lake in the campus is carried out in the middle water experiment, and the fish and aquatic plants are raised in the lake to beautify the campus landscape. Use middle water to enter the campus green space

Spraying irrigation is carried out, and the school road sprinkler also USES reclaimed water to spray the campus road surface

3. Rainwater collection and utilization
The rainwater in the campus mainly comes from the building roof, the sports ground and the road in the campus. According to the different sources of rainwater, different collection ways are set. On the snowy mountain of campus, a number of rain pits are set up according to the height, in order to slow down the acceleration of the flow rate of rain by the mountain

Use, increase rainwater infiltration time, reduce surface runoff, prevent soil erosion. Ecological permeable measures, such as ecological permeable bricks, pebbles, gravel, and perforated concrete bricks, are adopted in the paving process of non-major traffic roads, squares and parking lots in the school

The rainwater saved by the pervious road surface can not only replenish the campus groundwater, but also slowly evaporate out, thus increasing the air humidity and comfort in the campus, nourishing trees, flowers and plants, reducing irrigation water, and cooling the campus and reducing dust in summer. right

The rainwater collected from the campus building roof, sports ground and the pavement of major traffic roads was designed in an organized way. The collected rainwater was filtered by precipitation and then combined with the reclaimed water system to be used for flushing, road flushing, fire fighting, greening and landscape water.

4. Water conservation measures

4.1 install the smart card meter water supply control system
Since 2005, the smart card meter water supply control system has been installed in student apartments, canteenagers, supermarkets and other places in succession. It is bought first and then used. When the balance on the card is insufficient, the solenoid valve will automatically close and stop the water supply. The implementation of this measure prompted relevant departments to establish and improve the water-saving system and effectively strengthened the water-saving awareness of teachers and students.

4.2 establish and improve the intelligent control system for students' bathing water

In 2002, when we built the student bathroom, we installed the magnetic card intelligent control equipment, which effectively prevented the waste of running water from the tap. In this summer vacation, the control system was improved to make the control more reasonable and water was collected on demand, which not only saved resources but also benefited students.

Application of solar energy technology

1. Application technology of solar hot water
In the eco-student apartment, a centralized solar water heating system is used. The system consists of several subsystems, such as heat collecting cycle, water replenishment, low water level water replenishment, electrically-assisted heating and anti-freezing. The heat collecting and circulating system is a forced circulating system, which consists of a collector, a water storage tank and a circulating pipe. The temperature difference is cycled based on the density difference between the collector and the water temperature in the water storage tank. The water in the water tank is continuously heated through the collector and then sent to a room through the pipeline connected to the water storage tank. There are 72 dormitories in the ecological student apartment, each of which needs hot water of 120L above 45°C every day. Water is supplied regularly every day, and the water temperature is controlled between 50 °C and 60°C.

The original student bathroom was transformed with solar water heating project. The centralized solar water supply system was adopted. When the temperature of hot water generated by solar energy was low, the high energy efficiency boiler was used for auxiliary heating to meet the use demand.

According to the different types of residential buildings, the integrated solar water heating system is designed in the staff dormitory area of the school.

2. Solar heating and ventilation technology

2.1 solar wall heating fresh air technology
In the design of ecological student apartment of shandong jianzhu university, the solar heating fresh air system is used to provide heating and fresh air for rooms facing the north. On the south wall of the building, 157m2 of dark brown solar wallboard was installed in the position of the window wall and parapet. The color was selected to meet the higher solar radiation absorption rate (0.94 for black solar absorption rate, 0.91 for dark brown), ensuring the unity and coordination of building facade colors. The vertical solar wall between the Windows has a height of 16.8m and a width of 2.05m. It is installed from the second floor to ensure that the solar wallboard can obtain sufficient solar radiant heat. The wall board is fixed on the wall with the help of a steel frame, forming a 200mm thick air layer between the wall and the wall. The wall board of the parapet in the heat-collecting part has a dip Angle of 36 degrees, with a height of 2.4 meters and a length of 21 meters. It is surrounded by the daughter wall to form a triangular prism space. A 500mm × 600mm heat sink is opened at the east and west ends of the space roof for heat dissipation in summer. There is a 1000mm× 200mm air outlet in the middle, which is connected with the fan and the air supply pipe. The air pipe goes through the corridor of each floor to all the rooms facing north, providing heating and fresh air to the interior.

2.2 solar chimney ventilation technology
A solar chimney was added to the design of the eco-student apartment, with the aim of making full use of solar energy and wind power to enhance the "chimney effect" and provide a dynamic guarantee for the natural ventilation of the apartment. The solar chimney is located in the middle of the western wall of the eco-student apartment, with a hallway through the window

The connection. The chimney is supported by a steel structure, which is enclosed by a grooved and pressed steel plate. The outer surface of the steel plate is blackened to increase the absorption rate of solar thermal radiation.