Recently, the BIM construction drawing of the Guangzhou Seventh Resource Thermal Power Plant Phase II Conghua project undertaken by WELLE Environmental Protection Group won the first prize of the design group in the 2021 "SMART BIM" intelligent construction BIM competition, opening a good situation for the Group to enter the three-dimensional design stage.
The traditional CAD technology is based on two-dimensional planar arrangement of equipment, pipes and Bridges, which is subject to subjective factors such as lack of spatial imagination and different experience levels of designers and builders. In the actual construction process, it is easy to have pipeline collision, unbeautiful layout and other problems, resulting in rework modification, material waste and so on.
With the rapid development of Internet, big data and BIM technology, the data foundation and technical conditions for three-dimensional description and expression of project construction drawings have been available. Taking BIM technology as the fulcrum and combining the data platform to promote the visualization, precision and high efficiency of the project construction process is a new idea for the development of environmental protection projects in the future.
In 2019, WELLE Environmental Protection Group undertook the Guangzhou Seventh Resource Thermal Power Plant Phase II Conghua project of Guangzhou Environmental Protection Investment Group Co., LTD. The design scale of the leachate treatment station of this project is 900 m³/d (including 720m³/d leachate and 180m³/d low-concentration production wastewater). The leachate treatment process adopts "pretreatment + anaerobic + external MBR (secondary A/O) +NF+RO", and the low-concentration wastewater is mixed with the leachate anaerobic effluent and then enters the subsequent biochemical treatment and membrane advanced treatment. NF concentrated liquid adopts two-stage material membrane treatment process, RO concentrated liquid adopts chemical dehardening + pipe softening film + high pressure film treatment process, and the treated effluent meets the open circulating cooling water supplementary water standard in the "Quality Standard of Industrial Water for Municipal Sewage Recycling and Utilization (GB/T19923-2005)" before reuse.
Taking this project as a starting point, the Group uses BIM technology for 3D construction drawing design, opening a new journey of transformation from 2D to 3D front-end design.
(1) Optimization of pipeline layout: BIM software comes with the performance of pipeline collision test. During the drawing process, the pipeline layout can be adjusted in time to ensure the rationality of pipeline layout, overcome the pipeline collision problem in two-dimensional design, and the pipeline layout can be optimized to a great extent.
(2) Visualization: BIM three-dimensional drawings present equipment, pipelines, valves and other engineering components in a concrete way, which is more clear and intuitive than two-dimensional plane expression.
(3) Precision: BIM drawing can generate a list of quantities, sections from various perspectives, and axonometric drawings with one click, breaking through the dilemma of rough engineering quantity statistics and rough section drawings in traditional CAD drawing, greatly improving the quality of project drawing, and making the docking process from design to installation and construction more refined to achieve the effect of "design is landing".
(4) High efficiency: The precision of the bill of quantities will effectively avoid the situation of excess or lack of material purchase, and improve the efficiency of front-end procurement. At the same time, three-dimensional presentation can express the design intention more comprehensively, reduce a large number of design changes, help improve the efficiency of project implementation, and form a good situation of "finding fast, understanding, and fast construction" for every construction worker.
(5) Cost control: High efficiency of work means that labor costs and time costs are saved; at the same time, the accuracy of material statistics means that procurement costs are saved. Therefore, three-dimensional design plays a constructive role in strengthening the installation cost control of the project. For project managers, they can know well, master the overall situation, and effectively control costs.
For the implementation of the project, taking the Guangzhou Seventh Resource thermal Power Plant Phase II Conghua project as an example, in the project installation stage, three-dimensional construction drawings reduce the time of site construction personnel to distinguish and identify the drawing, saving time and cost, and improving construction efficiency.
For the development of the department, the transformation from two-dimensional design to three-dimensional design is the trend of The Times. Finally, the goal of direct use of BIM software for positive design by all employees is realized, replacing the traditional two-dimensional design expression, which is a subversive improvement of the designer's own ability, and then a good situation of the overall improvement of the design department is formed.
For the development of enterprises, BIM 3D design is of great help to project cost control. Strengthening cost management and reducing costs is an issue that environmental protection engineering companies must pay attention to as they continue to develop, and seizing it can drive the overall situation and become more competitive in the environmental protection market.
For the development of the industry, operation and maintenance management is the most potential development direction of BIM technology. BIM technology is used to input the basic information of various elements of the project, and an intelligent platform is created by combining the Internet and big data. In the later operation and maintenance stage of the project, it can effectively help operation and maintenance personnel to maintain and transform the building, equipment, pipeline and other components of the site, and gradually improve the pain points of operation and maintenance management caused by insufficient information and information loss in the era of two-dimensional design. This is the value of BIM technology worth attention and expansion in the future.
Since 2020, the Group has rapidly promoted the construction of BIM 3D design team, invited professional teachers to conduct BIM software operation training for the Group's designers, and gradually formed a group of BIM engineers with 3D design ability. From the point to the surface, from the less to the more, and finally realized the transformation of all employees to carry out 3D design, which is a technical progress of the Group.
In the future, BIM 3D technology will continue to release creativity, and we also look forward to more exciting and historically innovative sparks between BIM and the environmental protection industry.
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