World Journal of Environmental Science and Engineering is an international, peer-reviewed open access journal dedicated to advancing research the field of environmental science and engineering. The journal provides a rapid publication process to ensure wide dissemination of high-quality articles to scientists, professionals, and interested individuals worldwide. Our goal is to serve as an efficient, reliable, and trusted platform for scholars and readers, publishing cutting-edge research in the field.
Abstract: Developing rapidly in recent years, the domestic residential construction, quality of residential area outdoor environment more and more get the attention of people, the old residential area reconstruction problem gradually become social hot issues in recent years, in the ninety s before the construction of the old residential environment deteriorating, residents of the growing demand and nowadays more and more broken the living environment of contradictions. The improvement of old residential areas has become an urgent problem. In the existing renovation work, the focus is mainly on the seismic energy saving of buildings and the improvement of the living environment. However, the aging public space brings about the incompatibility between the residents' needs and the limited space environment of the old community, which makes the quality of the external space difficult to meet the needs of the residents at the present stage. In view of the present situation of Chinese residential area construction, through the field research, interviews and reading literature methods, the article investigated the three different years of residential area in xi 'an, carried on the thorough study to the residential area, detailed analysis of three different time residential area in the communication activity space faced by the problem. This paper expounds the influence of outdoor environment factors of residential area on residents' behavior pattern, forms an effective renovation strategy, and finally provides a certain reference for the renovation planning of the old residential area.Abstract: Developing rapidly in recent years, the domestic residential construction, quality of residential area outdoor environment more and more get the attention of people, the old residential area reconstruction problem gradually become social hot issues in recent years, in the ninety s before the construction of the old residential environment deteriora...Learn More
Abstract: With the emphasis on ecological civilization construction and green and low-carbon development policy in our country in recent years, the environmental protection of industrial enterprises and the related work of emission permits had been carried out steadily, self-monitoring had gradually become an indispensable part of urban pollution prevention and control. However, in the actual testing process, the enterprise environmental management and environmental law enforcement officials often found that the content of some related factors conflict between test results and theory. In order to solve the problem that the results of some relevant environmental monitoring indexes were contrary to the expectation, the relationship between the contents of some typical environmental monitoring indexes, including VOCs and NMHC, NMHC and benzene series, TN and NH4+-N, COD and BOD, was discussed according to the definition of relevant standards, the reason of the change of the relationship between the content of each index was analyzed from the angles of detection method, calculation method and determination range, and the future development direction of environmental testing was prospected, which could be used as a reference for the prevention and control of waste water and air pollutants in industrial enterprises and for the relevant environmental law enforcers, managers and testers.Abstract: With the emphasis on ecological civilization construction and green and low-carbon development policy in our country in recent years, the environmental protection of industrial enterprises and the related work of emission permits had been carried out steadily, self-monitoring had gradually become an indispensable part of urban pollution prevention ...Learn More
Abstract: Farmland soil is an indispensable natural resource in agricultural production. A macro analysis of the spatial distribution and pollution level of heavy metals can provide a scientific basis for future farmland pollution control. Based on the measured data of heavy metals in farmland soil in Guangxi since 2014, the spatial distribution characteristics of 6 heavy metals in farmland soil, namely Pb, As, Cd, Cr, Zn and Cu, were discussed, and the pollution status was evaluated using the geo accumulation index method. The results showed that the average values of Pb, As, Cd, Cr, Zn, Cu in farmland soil were higher than the background values of farmland soil in Guangxi. The average contents of Pb, As, Cd, Zn in farmland soil exceeded the soil environmental quality standard (GB15618-2018), and Cr and Cu did not exceed the standard; The spatial distribution characteristics of heavy metals in farmland soils in Guangxi are obviously different. Generally, the content of heavy metals in the middle and north regions is higher than that in the south regions; The land accumulation index is in the order of Zn>Pb>Cd>As>Cu>Cr, in which the average Igeo values of As, Cu and Cr in farmland soil are all less than 0, while affected by local mining activities, the average Igeo values of Zn, Pb and Cd in soil are higher.Abstract: Farmland soil is an indispensable natural resource in agricultural production. A macro analysis of the spatial distribution and pollution level of heavy metals can provide a scientific basis for future farmland pollution control. Based on the measured data of heavy metals in farmland soil in Guangxi since 2014, the spatial distribution characterist...Learn More
Abstract: In the process of recycling MDEA (N-methyldiethanolamine) solution in a terminal decarburization system of CNOOC, the quality of MDEA solution was deteriorated due to the generation and accumulation of impurities such as solid suspended solids and heat stable salts, which led to blockage and unstable operation of pipeline equipment in the decarburization system, thus affecting the CO2 removal effect of the solution, the Box-Behnken effect surface method was used to design the three main factors of the ion exchange-based amine purification process: the continuous adsorption time of the amine solution, the resin regeneration temperature and the resin regeneration time. Taking the conductivity of the MDEA solution after purification as the response function, a corresponding mathematical model was established to optimize the test method, and the correlation coefficient R2 (R2=0.9418) of the regression equation obtained was greater than 0.9, indicating that the predicted value had a high correlation with the experimental value, and the test method was optimized accordingly. The best test conditions obtained were: the continuous adsorption time of amine solution was 50 min, the resin regeneration temperature was 40°C, and the resin regeneration time was 30 min. Under this condition, the conductivity of the purified MDEA solution was 1.56 ms/cm, and the salt content was 0.8%. The experiment was repeated 3 times according to this method, and the salt content of the MDEA solution after purification was ≯0.8%, which met the technological requirements. The Box-Behnken experimental design method was feasible for amine solution purification process optimization screening based on ion exchange, and the predicted value of the mathematical model was consistent with the experimental observation value.Abstract: In the process of recycling MDEA (N-methyldiethanolamine) solution in a terminal decarburization system of CNOOC, the quality of MDEA solution was deteriorated due to the generation and accumulation of impurities such as solid suspended solids and heat stable salts, which led to blockage and unstable operation of pipeline equipment in the decarburi...Learn More
Abstract: The river plays an important role in the development of the human society. But because of the rapid development of the cities, human overuse of river water and random discharge of pollutants into the rivers, the pollution of river water environment is becoming more and more serious. The biofilm technology is used to repair the water environment of the river in order to purify the water body and improve the overall water environment of the river. Water samples were collected from the trial river channel. In the initial stage, samples were taken once a day. After stable operation, the sampling interval was 4 days, 7 days and 11 days. A total of 14 water samples were collected. The results showed that the removal rate of ammonia nitrogen (NH4+-N) reached 65.28% from M1 to M2 after 32 days of stable operation of the microbial membrane. And that reached 66.67% from M1 to M2. The research shows that the effect of removing NH4+-N by in-situ biofilm technology is obvious. It can effectively improve the river water environment and provide reference for the in-situ treatment of urban rivers.Abstract: The river plays an important role in the development of the human society. But because of the rapid development of the cities, human overuse of river water and random discharge of pollutants into the rivers, the pollution of river water environment is becoming more and more serious. The biofilm technology is used to repair the water environment of ...Learn More
Abstract: This paper starts from the current situation of rural sewage, analyzes the current common sewage treatment process at home and abroad and the existing mainstream sewage treatment process, compares and analyzes rural domestic sewage with urban domestic sewage, and proposes suitable treatment measures for the characteristics of rural domestic sewage - constructed wetland, because a single constructed wetland treatment measure will have problems such as low treatment efficiency and substandard effluent quality, so This paper presents its views on how to improve and optimize the constructed wetland using the existing reinforcement process, and improve the efficiency of the constructed wetland for rural sewage treatment by using some reinforcement measures. The article introduces and analyzes various existing reinforcement processes, compares the advantages and disadvantages of each reinforcement process, and especially discusses magnetic field reinforcement technology in detail, showing that magnetic field reinforcement technology has a certain role in sewage treatment, and compared with the traditional process without magnetic field reinforcement treatment, the reinforcement measures have significantly improved the treatment effect of sewage, and finally, the constructed wetland and reinforcement technology in rural Finally, the application of constructed wetland and intensification technology in rural sewage treatment is proposed.Abstract: This paper starts from the current situation of rural sewage, analyzes the current common sewage treatment process at home and abroad and the existing mainstream sewage treatment process, compares and analyzes rural domestic sewage with urban domestic sewage, and proposes suitable treatment measures for the characteristics of rural domestic sewage ...Learn More
Abstract: In this study, the visualization tools CiteSpace and VOSviewer were used to visually analyze the research on ecostoichiometry in the lakeside zone, and the knowledge map of the research hotspots and trends of ecostoichiometry in the lakeside zone was drawn through the main research hotspots, research institutions and authors in the field. The method was to search the relevant journal literature collected in the past 20 years from CNKI and Web of Science databases, and finally retrieved the relevant literature that met the criteria, including 162 Chinese literature and 61 English literature. The retrieved English journals were mapped using VOSviewer software, while Chinese journals were mapped using CiteSpace. The visual results show that the number of publications in the field of ecological chemometrics in the lakeside zone at home and abroad shows a fluctuating upward trend. The most influential institution in China is Fujian Normal University, and abroad it is dominated by Qingdao University of Science & Technology. In the past 20 years, the research hotspots at home and abroad in this field have mainly been wetland restoration, nutrient storage, cultivated land protection, cultivated land ecological compensation and ecosystem service value. Research at home and abroad has roughly gone through two stages from the beginning to the rise of fluctuations. Through the literature analysis of influential authors, important research institutions, keywords and other fields of ecological stoichiometry in the lakeside zone, it can provide reference and reference for further research in this field.Abstract: In this study, the visualization tools CiteSpace and VOSviewer were used to visually analyze the research on ecostoichiometry in the lakeside zone, and the knowledge map of the research hotspots and trends of ecostoichiometry in the lakeside zone was drawn through the main research hotspots, research institutions and authors in the field. The metho...Learn More
