Prevention and Control Measures of Environmental Pollution Problem Caused by Dairy Farming in Inner Mongolia

Environmental pollution problem generated in dairy farming process is the bottleneck restricting development of animal husbandry. By using the investigation data from dairy farmers of Inner Mongolia,environmental pollution problem generated by dairy farming in Inner Mongolia and its cause were analyzed,and prevention and control measures were put forward. The research result showed that weak technology support of environmental treatment and environmental-protection awareness of dairy farmer and bad application effect of pollution control technology caused by lower education degree of dairy farmer were main reasons for environmental pollution problem. We should develop dairy circular economy,advocate a moderate scale,scientifically breed,and enhance training of pollution control technology and propaganda to protect environment.

Research on Prevention and Control of Environmental Pollution in Building Construction

The quality of human life has been greatly improved with the rapid development of the market economy.However,at the same time,people are paying more attention to the problems caused by environmental pollution.As a result,there is an increase in environmental awareness.At the present stage,people are concerned about the negative impact that building construction has on the environment.Building construction enterprises must have preventive measures and deal with environmental pollution during construction.This is to minimize pollution caused by construction and to satisfy the implementation of green civilization construction.This is important as it can enhance the development of socialist spiritual civilization and thus promote the expansion of enterprises in the long run.The author explores and analyzes the main types of environmental pollution generated in building construction.Besides,the author provides effective measures for the prevention and control of environmental pollution caused by building construction to reduce its adverse impact on the environment.

Prevention and Control of Rural Environmental Pollution Based on Rural Revitalization Strategy

In 2018,the rural revitalization strategy proposed by the No. 1 Document of the central government. Based on the current situation of rural environmental pollution in China,this paper explored the relationship between rural revitalization strategy and prevention and control of rural environmental pollution. On this basis,it analyzed the causes of serious rural environmental pollution in China,Finally,it came up with recommendations including establishing a sound rural environmental governance system,making diversified capital investment for nurturing " green farmers".

Pollution Status of Dioxins Persistent Organic Pollutants in Guangxi and Control Countermeasures

Production and pollution control situations of dioxins persistent organic pollutants in Guangxi were introduced.Pollution status of dioxins persistent organic pollutants in Guangxi was understood,and the existing problems in pollution control were analyzed,and finally pollution control countermeasures and suggestions were proposed.

Legislative Countermeasures for Preventing and Controlling Water Pollution in Water-deficient Regions

The shortage of water resources is severe in Beijing. The shortage of eco-environmental water and the sewage discharge over the environmental capacity are main bottlenecks that restrict the improvement of water environment. The reuse of wastewater could not only reduce the discharge of pollutants,but it could also increase the consumption of eco-environmental water. Therefore the reuse of wastewater is an important approach to improve the water environmental quality. Combined with the formulation process of Regulations of Beijing on Prevention and Control of Water Pollution,the current situations of prevention and control of water pollution in Beijing,the discharge of pollutant,water environmental quality,the population and economic development and water resources and so on were analyzed. And the bottlenecks that restricted the improvement of water environmental quality were found. And the necessity of solving the control of water pollution by reusing the wastewater and ensuring the consumption of eco-environmental water was analyzed from the perspective of the control of water pollution. And some legislative countermeasures were put forward,which provided new ideas for solving the problem of the prevention and control of water pollution and improving the water environmental quality. It was of important reference values for local governments（ especially water-deficient regions） to make relative polices or plans of water pollution control and water environmental protection.

The Occurrence and Prevention of Filamentous Algae in Ecological Purification System of Micro-polluted Water

[ Objective ] The aim was to study the influence of filamentous algae on the process of water ecological purification. [ Method ] The occurrence mechanism of filamentous algae and its ecological system were summarized and analyzed. Considering the ecological purification in north- ern Jiangsu, the occurrence and prevention of filamentous algae in water, the method to prevent filamentous algae in polluted water was discussed. [ Result] The results showed that by measures of improving planting density, regular harvesting, and water flow state control before the filamentous algae blooming period, together with improving local pH value, light interference and ecological control during the blooming period, can effectively control the filamentous algae blooming. [ Condusion] The study of the happening mechanism of filamentous algae provided theoretical references and the technical basis in the work of filamentous algae prevention and control.

WATER POLLUTION IN CHINA:CURRENT STATUS, FUTURE TRENDS AND COUNTERMEASURES

Based on the statistical data related to water pollution in recent years, this paper firstly describes in detail the current status of water pollution and water quality in rivers, lakes, reservoirs, groundwater and coastal waters in China, then makes a comprehensive analysis on future trends of water pollution in China. The authors hold that the economic power, technology level and management level have determinative influences on the current status and future trends of water pollution. At last, this paper discusses briefly the policies and measures for preventing and controlling water pollution in the light of the national conditions.

Comparative Analysis of Pollutant Characteristics during a Fog,Haze and Sandstorm

Characteristics of air pollutants during three types of low-visibility weather in west-central Inner Mongolia were analyzed.The results showed that in the three processes,air pollution was slight during the heavy fog and serious during the haze and sandstorm.PM 10 concentration had the biggest difference among the six pollutants.During the heavy fog,the hourly concentration of PM 2.5 in Hohhot City varied from tens to 100 μg/m^3,while that of PM10 ranged from tens to 200 μg/m^3,and that of O3,NO2,SO2 and CO was low.During the haze,the hourly concentration of PM2.5 and PM10 in Hohhot City ranged from tens to 600 μg/m^3.The heavy atmospheric pollution was caused by both PM2.5 and PM10 .The O3 concentration during the haze was lower than that during the heavy fog.The accumulation of NO2,SO2 and CO had a significant effect on the aggravation of atmospheric pollution.During the sandstorm,the hourly concentration of PM 10 in Hohhot City varied from about 100 to 5 000 μg/m^3.It had a hysteresis effect on the position and intensity of sandstorm,and there was no obvious daily change.The stronger the sandstorm was,the larger the hourly concentration of PM10 was.The hourly concentration of PM2.5 ranged from tens to 500 μg/m^3,and there was no obvious daily variation.When the sandstorm was the strongest,PM10 was the main contributor to air pollution,but the air pollution caused by PM2.5 was also serious.The atmospheric pollution from O3 was considerable.The hourly concentration of NO2,SO2 and CO during the sandstorm was obviously lower than that during the heavy fog and haze,and there was no obvious daily change.

Particulate matter trends and quantification of the spring sand-dust contribution in Hohhot,Inner Mongolia,from 2013 to 2017

On 10 September 2013,the State Council promulgated the Action Plan for the Prevention and Control of Air Pollution(hereinafter referred to as the Action Plan).To study the variations in the air pollutant concentrations in Hohhot during the implementation of the Action Plan and the effects of various measures,the daily concentrations of air pollutants(fine particulate matter(PM_(2.5)),inhalable PM(PM 10),SO_(2),and NO_(2))in Hohhot published by the China Environmental Monitoring Station were obtained to analyze the general meteorological conditions in Inner Mongolia from 2013 to 2017.The variations and causes of the ambient PM concentration in Hohhot were examined,and the quantitative influence of sandstorms on the ambient PM concentration in Hohhot was analyzed by selecting the spring season with frequent sandstorms as an example.The results showed the following.(1)The air quality in Hohhot continuously improved,and compared with those in 2013,the PM_(2.5)and PM 10 concentrations decreased by 24.6%and 48.2%,respectively,in 2017.However,the air pollutant concentrations remained high,with the average PM_(2.5)and PM 10 concentrations exceeding the national secondary standards by 22.9%and 35.7%,respectively.(2)The reductions in the spring PM_(2.5)and PM 10 concentrations were 5.6%and 8.9%,respectively,and the annual decreases in the PM_(2.5)and PM 10 concentrations were 3.6 and 15.1μg m^(−3)yr−1,respectively,from 2013 to 2017.(3)The absolute contribution ranges of dust weather to the concentrations of PM_(2.5),PM 10,and TSP during 2013–17 were 0.6–5.2μg m^(−3),9.0–16.9μg m^(−3),and 14.7–30.0μg m^(−3),respectively,in Hohhot during the spring.

Thoughts on Energy Solutions to Alleviation of Air Pollution during the Heating Period in Key Areas

Since the implementation of the Action Plan for Air Pollution Prevention and Control , all regions of China have steadily promoted the prevention and control of air pollution and achieved results continuously. However, the atmospheric environment in key areas such as Beijing-Tianjin-Hebei region, the Yangtze River Delta region, and Fenwei Plain is still severe, and especially during the heating period heavy pollution occurs frequently, which has become the focus and difficulty of improving the quality of the atmospheric environment and is also the weakest link of China s air pollution control at present. How to alleviate air pollution, how to win the battle of pollution prevention and control, how to hold the fruits of the blue sky defense war, energy consumption is key.

Investigation of Heavy Metals and Radionuclide’s Impact on Environment Due to The Waste Products of Different Iron Processing Industries in Chittagong, Bangladesh

The waste products, such as induction furnace slag, ladle furnace slag, air pollution control dust, and ramming mass collected from major iron processing industries in Chittagong, Bangladesh were analyzed for heavy metals and naturally radioactive elements. The concentrations of heavy metals Fe, Cr, Mn, Co, Cd, Ni, Pb, Cu and Zn were obtained from atomic absorption spectrophotometer (AAS) analysis with flame atomizer and the radioactivities due to 226Ra, 232Th and 40K were determined using high purity germanium (HPGe) detector of well shielded gamma-ray counting system. From the mean specific activities of the above three natural radionuclides in the investigated samples, the radium equivalent activity (Raeq) and the external hazard index (Hex) were calculated. The study showed the prospect of contamination of environmental materials (viz., soil, water, air, plant) due to many of these investigated elements by using the collected waste products in landfill. The chemical process of ion exchange indicates that the elevated heavy metals in soil can play a role to increase the natural radioactivity of the soil. The obtained Raeq as well as Hex indicated the insignificant radiation hazard due to the activities of primordial radionuclides found in the investigated samples.

Research Progress on the Relationship between Air Pollution and Socio-economic Growth in China

Air pollution is a hot issue studied by scholars all over the world.Academic circles generally believe that socio-economic factors such as extensive economic growth,unbalanced proportion of industrial structure and unreasonable energy consumption structure are the main"culprits"of serious air pollution in China.Therefore,the relationship between air pollution and socio-economic growth has very important theoretical and practical significance for air pollution prevention and control and promoting the sustainable and healthy development of cities.Through literature research and summary methods,this paper studies the severity and harmfulness of air pollution in China,and deeply studies the research progress of socio-economic influencing factors of air pollution,environmental Kuznets curve hypothesis of air pollution,decoupling relationship between air pollution and socio-economic growth,so as to provide useful reference for the prevention and control of air pollution.

An assessment of China's joint prevention and control policy on sulfur dioxide emissions reduction:A spatial econometric analysis

Sulfur dioxide(SO_(2))is a typical pollutant that affects human health,climate,and environmental and ecological conditions.China has been experiencing high concentrations of SO_(2),particularly in urban areas,since the 1990s.In 2010,a"joint prevention and control"(JPC)policy was issued to address air pollution problems and strengthen the regulation of SO_(2)emissions.This study aimed to describe the mitigation effects of this policy on SO_(2)emissions in 116 Chinese cities from 2003 to 2017.We applied global and local Moran's I indices to confirm the presence of significant spatial autocorrelation in SO_(2)emissions and constructed four spatial models to assess the effect of the JPC policy in reducing SO_(2)emissions and its transmission mechanism.We found that the policy decreased SO_(2)emissions by 1.89×10^(4)tons,S0_(2)intensity by 1.70 tons per km^(2),and S0_(2)per capita of 158.49 tons per 10,000 people in each city,on average,all of which are significant changes.The empirical results also show that population growth,economic structure,and environmental protection significantly decrease SO_(2)emissions.Finally,we recommended policies to encourage regional cooperation under the JPC policy,with the aim of promoting furtherreductions in SO_(2)emissions.

中国大气污染防治政策与空气污染治理——基于城市级面板数据的实证研究

2013年颁布实施的《大气污染防治行动计划》是我国首个针对环境突出问题开展综合治理的行动计划;为巩固治理效果,应对动态变化的环境问题,2018年国务院进一步发布了《打赢蓝天保卫战三年行动计划》。研究利用中国258个城市2013年1月至2020年9月日度空气污染数据,实证检验了上述两阶段政策对空气质量的影响,并从不同污染物治理效果、时间和区域异质性等角度分析了政策效应的差异。结果指出:第一,“大气十条”和“蓝天保卫战”均显著降低了AQI、PM_(2.5)、PM_(10)、SO_(2)、NO_(2)、CO;第二,相比“大气十条”,“蓝天保卫战”对NO_(2)的减排效应更高,且实现对O_(3)的协同治理;第三,“大气十条”和“蓝天保卫战”对各污染物的减排效应因供暖时期、地区能源资源禀赋呈现出较强的异质性特征。

我国农业面源污染研究与展望

农业面源污染会带来一定的生态环境风险。经过20多年的治理,我国面源污染基础研究和防控工作取得重要进展,构建了流域、区域或国家尺度农业面源污染源汇路径全过程监测与评估体系,基本厘清了不同生态条件下农田系统中氮磷流失的主控因子,初步探明了农田有毒有害化学/生物污染与防控机制。在防控技术层面,研发出新型、绿色肥料替代常规化肥减量投入技术与产品,氮、磷高效利用污染负荷减排技术,土壤氮、磷增容负荷减排技术,坡耕地氮磷流失阻控技术,农业废弃物资源化利用技术与消纳装备。我国农业氮、磷排放污染负荷虽整体呈下降趋势,但依然是影响我国环境质量的首要污染因子,且农业面源污染呈现新的特征,表现为养殖业尤其是水产养殖业污染问题逐渐突出,残留地膜、农药、抗生素、激素、病原微生物等新型污染物污染问题不容忽视,面源污染途径从以径流扩散为主转向淋溶、挥发、累积并重的阶段,污染介质从单一地表水体转向包括地下水体、大气以及农田生态系统并存的状态。未来应以本领域我国取得科研成果和相关信息资源为基础,利用数字技术和AI技术,构建我国农业面源污染防控技术和管理融合大数据模型和系统理论,持续加强田块、流域、区域等多尺度面源污染防控技术集成配套与工程化应用研究,培育绿色低碳农业新质生产力产业,落实防控技术工程“政—产—学—研—用”保障机制与措施,以提升区域或流域尺度面源污染防控技术的环境、经济和社会综合效益,全面推进我国农业面源污染治理工作,促进农业高质量健康发展。

土壤污染防治规定的法典表达

环境法典编纂对于土壤污染防治规定的安排必须处理好预防与治理、污染防治与土地利用之间的关系。本语境下预防的对象是污染后果而非健康损害。污染源控制分则编应以预防为主,土壤污染防治分则编的定位是以治理为重心。《土壤污染防治法》关于治理责任的构成要件、多类或多个责任主体间责任承担关系的规定缺失,土壤污染防治分则编应从终局责任和中间责任、连带责任和按份责任角度填补这一结构性疏漏。为避免交叉重复,环境法典应根据预防性措施的规定内容综合考虑其在土壤污染防治分则编和污染源控制分则编的位置安排。环境法典应在国土空间规划、建设用地土地使用权变动、污染治理后土地的再利用三方面建立土壤污染防治与土地利用的衔接。

Impact of China’s Air Pollution Prevention and Control Action Plan on PM2.5 chemical composition over eastern China

China promulgated the Air Pollution Prevention and Control Action Plan(the Action Plan)in 2013 and developed stringent control measures to mitigate fine particulate matter(PM2.5) pollution.Here,we investigated the PM2.5 chemical composition changes over eastern China associated with the Action Plan during 2013-2017 using satellite-based PM2.5 chemical composition data derived using CMAQ simulations and satellite inputs.The PM2.5 concentrations decreased considerably during this time as a result of the reductions in all chemical species in PM2.5.The population-weighted mean concentrations over eastern China decreased from 11.1 to 6.7μgm-3 for SO42-,13.8-13.1μgm-3 for NO3-,7.4-5.8μgm-3 for NH4+,9.9-8.4μgm-3 for OM,4.6-3.8μg m-3 for BC and 12.9-9.6μg m-3 for other species in PM2.5.SO42-had the largest reduction of 40%,while NO3-had the lowest reduction of 5%,resulting in a greater fraction of NO3-and a smaller fraction of SO42-in PM2.5.Among the three key regions,Beijing-Tianjin-Hebei had the largest reduction in PM2.5 and its chemical compositions.The decrease in SO42-concentrations was in line with the reduction of SO2 emissions,and the major driver of the SO2 emission reductions was the industrial sector.The decrease in NO3 concentrations was limited because the decrease in SO2 emissions and the stable NH3 emissions facilitated the formation of NO3-from HNO3,which partially offset the reduction in NOx emissions driven by the power sector.To mitigate PM2.5 pollution more effectively,future efforts are needed to reduce NH3 emissions.

河套灌区农业高效节水与面源污染防控技术

针对河套灌区水资源短缺、农业面源污染严重等问题,从不同空间尺度和治理环节入手开展灌区农业高效节水与面源污染源头防控技术研究。研发了针对污染源头的农田水肥盐药调控管理技术模式(包括除草剂残留研究与用量推荐、土壤水氮盐和作物生长对水肥管理的响应、减量膜上秋浇技术及次生盐渍化土壤微生物改良技术)、针对农田排水的富氧生态沟渠截污净化技术模式和区域尺度的面源污染空间解析识别技术,并集成构建了贯穿源头控污—过程削污—区域查污—系统调污的高效节水型农业面源污染防控技术体系。基于现状研究和新发展理念提出了河套灌区水土资源领域研究的几点认识,相关成果为河套灌区高质量发展提供了重要支撑,对同类型灌区具有重要借鉴意义。

邻里噪声污染防治立法现状及江苏省立法建议

社会生活噪声污染来源多、成因复杂、影响范围广,对公众健康危害大。产生社会生活噪声污染纠纷时,其法律主体复杂,涉及部门多,受影响群众覆盖范围广,是社会各界较为关注的噪声类型之一。邻里噪声是社会生活噪声的重要组成部分。介绍了法国、德国、美国等国家邻里噪声的立法现状,我国国家层面有关邻里噪声的法律规定,以及地方邻里噪声的立法实践;系统分析了江苏省邻里噪声扰民的主要类型、特点和污染防治的现状;针对性地提出了邻里噪声污染防治的立法建议,可为江苏省噪声污染防治立法提供参考。

“双碳”背景下中国海上石油污染防治法律制度的体系化构建

实现碳达峰碳中和已成为中国经济发展和社会转型的重要目标,同时对生态环境法治建设中法律目标确定与法律制度建设提出了新要求。海洋作为地球系统中最大的碳库,在提升生态系统碳汇能力方面扮演着重要的角色。随着海上石油开发利用活动的日益增加,海上勘探、开采、运输及相关作业性活动造成的污染事件频发,推进海洋生态环境污染治理的法治化已成为全球生态环境保护的必然选择。海上石油污染防治法律制度具备一般污染防治法律制度的特征与表现形式,但因其法律关系主体的复杂性、规范内容的不确定性、制度适用的局限性而具有自身的特殊性。海洋环境污染的治理具有天然的国际性,而多极化的时代背景使得全球海洋污染治理更具挑战性。各国的海上石油污染治理体系虽然不同,但通过比较研究发现,其法律制度的构建多依托并服务于国家战略,强调价值理念的引导作用,以及在明确法律责任的基础上侧重构建跨界治理法律实施体系。中国海上石油污染防治的法治建设因法律规范水平与海洋治理需求之间存在明显张力,目前面临着技术性、衔接性、功能性等多重困境。这就亟须理顺多要素法律规范层级制度构建的生成思路,从内容框定、制度衔接、救济保障三个层面系统构建中国海上石油污染防治法律制度体系,包括推进国家责任基础上硬法与软法统筹的法律体系建设,建立跨界合作视域下的海上石油污染风险防范与监管制度,构建以整体性治理为导向的法律救济制度,以期实现对全球海洋污染治理格局变化的积极回应与全球海洋污染治理共识的有效聚合。