The denitrifying phosphorus removal bacteria (DPB) were enrichment using SBR reactor and two stages of training method under the low carbon source with nitrate as electron acceptor. The system was operated under the condition of anaerobic-aerobic-precipitation-discharge for 10 cycles in the first stage,...

In this work, a new type of micro-electrolysis technology using combined materials containing fly ash, iron scraps and lanthanon Gd on the treatment of toxic and harmful aniline wastewater was presented. Fly ash was applied instead of activated carbon in the combined materials and single-factor experiment...

In this study, we investigated the hydraulic environment heterogeneity of the Lijiahe spawning ground which locates in the downstream of Jinchuan River, one tributary of Dadu River. River2D was conducted to simulate the hydraulic environment, namely flow velocity and water depth, under different discharges....

In this paper, the development history and current situation of air floatation, the advantages and types of air flotation method, and the effects of flotation method on water treatment are expounded. The influence of the sizes of microbubble that is an important factor to the flotation effect on water...

Research on Classification Environment Technology Diffusion of Occupational Tobacco Growers

Fourteen environment factors of differential management system of tobacco farmers are determined and selected from predecessors' research achievements. Relational structure of fourteen environment factors is analyzed by ISM model in this paper. This results show that sales average price, family members...

Low carbon city refers to promote low-carbon economy, realize low-carbon emissions. First of all, challenges of low-carbon city economic development in Zunyi are analyzed. After that, conceptual model and design idea of index of low-carbon urban economy are given. Finally, some policy suggestions are...

Global climate change caused by carbon dioxide and other greenhouse gas emissions has become increasingly concerned by the international community.Based on carbon source and carbon sink analysis frame in low-carbon economy theory, this paper constructs a low-carbon city measure index system which includes...

Through expounding the ecological environment situation of key district of Changzhutan urban agglomeration, the two-oriented society ecological security evaluation of index system was established. Ecological Security was evaluation. The general structure and measures for improving the security of ecological...

Based on the ship-based data in the Lianzhou Bay, an advection-diffusion model of pollution is established. The sharing coefficient field (SCF) and the responding coefficient field (RCF) are simulated by this model. The environmental captivity (EC) is calculated by the simplex method according to the...

Establishing the model of the shallow lake ecosystem with stochastic excitation, with the stochastic averaging method and nonlinear dynamic theory, the model of the shallow lake ecosystem with stochastic excitation was simplified. Based on the Stratonovich-Khasminiskii stochastic average principle and...

Winter in northern China, the presence of low temperature and turbidity micro pollution of groundwater.a conventional water treatment process finished water can not reach drinking water standards, so the need for process improvement, enhanced coagulation using powdered activated carbon with a very good...

[Objective] By screening salt-tolerant strains , provide support for salted wastewater.[Method]With high salted water high efficiency salt activated sludge acclimation salt high efficiency cultivation as the source of strain , isolated and purified salt-tolerant strains , by measuring the salt-tolerant...

The optical losses of the Fresnel collector’s mirror field are analyzed mathematically and optimization for the design parameters is made. In analysis of the optical characteristics, the optical losses of different segment are described according to the optical principles. And the optical efficiency...

This paper has analyzed status quo of drought in Lanzhou and the reason why not make full usage of the Yellow River to improve the local environment. It also includes present status of wetland, wild plants, plant, aquatic plants and wild animals in Lanzhou. Research and put forward the scheme of using...

In the petroleum industry, a large quantity of oil-contained wastewater is produced every day. This kind of wastewater normally contains oil droplet from 100 to 1000ppm, which is characterized by tiny oil droplets, dispersion, stable, uneasy to reunite float. The conventional methods such as demulsification...

Among methods used for transdermal penetration enhancement of drugs, the application of transdermal penetration enhancers is a method that has been most studied currently to promote the transdermal absorption of drugs, and also the most convenient method. Transdermal penetration enhancers (penetration...

Lycoriella pleuroti Yang et Zhang (Diptera : Sciaridae) and Scatella tenuicosta Bennison (Diptera : Ephydridae) have become major pests on greenhouse seedlings and caused lots of economic losses, which has greatly restricted the development of modern facility agriculture in Wuhan. We reported here the...

Chinese fir (Cunninghamia lanceolata) is an important commercial timber species in China. In the recent years, seasonal droughts occurred frequently in the fir growing areas and made a great impact on its production. In this study, PEG-6000 was used to simulate water deficit, while the drought-resistant...

In this paper, we have proposed a Group Selection Clone Immune Model for energy resource scheduling of microgrid, which consists of integrated microgrids and lumped loads. Multiple objectives are considered for load balancing among the feeders, minimization of the operating cost, minimizing the emission,...

The source region of the Yangtze River,Yellow River and Lancang River is the one of the most important ecological area around the world which have significant impact on the watershed. Since the related River is the mother river of Chinese, the air quality at the source region is more important than other...

Principal Component Analysis (PCA) is a main approach based on the second order statistics. It can remove the correlation between the signal components. PCA has been widely used in blind source separation and received attention because of its potential application in signal processing. PCA’s principle...

This paper analyzed the distributions and transfer processes of Cd, As, Cr, Pb, HCH, Hg and PHC in Jiaozhou Bay 1981. In according to the contents, horizontal and vertical distributions, and seasonal distributions of these pollutants, their water quality conditions, pollution sources, as well as the...

Based on the investigation data on Cd in Jiaozhou Bay in May, September and October in 1983, were analyzed the horizontal and seasonal distribution, vertical variation and variation range of Pb, revealed the seasonal variation process, settling process and water’s effect of Cd. Results showed that Cd...

Based on the analysis on the content and spatio-temporal distribution of volatile phenol, this paper assessed the pollution level, pollution source and source strength of volatile phenol in Jiaozhou Bay 1983. Results showed volatile phenol contents ranged from 0.50-3.38 g L-1 in the whole year, and were...

Biological soil crusts serve as a vanguard for improving the ecological environment in arid, semi-arid desertification areas. It is a good indicator of the improvement status which the local ecological environment is undertaking. This study was completed in Yanchi in Ningxia province and Dengkou in the...

The morphology of the natural sand in the southwest of Buguli desert, Xingjiang, China, has been studied to determine the sand-mass flux of the wind-sand flow, sand particle size distribution and morphology distribution. The results show that, when the average wind speed is 6.7m/s 2 m high from the ground,...

As one of the most important components of the wetland ecosystem, microorganisms play an important role in all kinds of ecological processes. Those ecological processes of wetland microorganisms are mainly represented by elements cycling, material transformation, energy flow and ecological restoration....

We developed a model for algal growth simulation considering flow disturbance, temperature, light intensity and nutrient concentration. Jinshan Lake, a typical river-connect lake at the middle-lower reaches of the Yangtze River, was selected as the research area. According to the simulations on the algal...

By carding the researches of health evaluation methods of domestic urban ecosystem, this paper discusses the principles, methods and revealed problems of urban ecosystem health evaluation, in order to providing reference for the building and evaluation of urban ecosystem health evaluation system.

Nine combinations of illite (0,5,10g•L-1) and cadmium (0,2.5,5mg•L-1) were set, and the hydroponics was adopted in this experiment to explore the effect of illite on the rice growth characteristics under Cd stress, including chlorophyll content, net photosynthetic rate, plant biomass, and the antioxidant...

As more foreign direct investment (FDI) inflows to pollution intensive industries in China, policy makers become concerned with the environmental problems causing by FDI. Because of environmental regulation in different regions can be formulated with different strength, whether or not environmental regulations...

The relation of the density of Noctiluca scintillans and environmental factors was studied. The grey incidence and relational degree of reference sequence and several comparison series were estimated. The results indicated that zooplanktons, Active phosphate Chemical oxygen demand(COD) were the important...

The study discussed the feasibility of CLUE-S model in Panjin in two different scenarios. Results showed that driving forces of land use in the model could simulated the land use in Panjin well, including slope, aspect, distance from river, density of population and so on. In the simulation in Panjin...

Beijing-Tianjin-Hebei Region is one of the areas which haze can be usually seen. The basic reason of haze is pollution, weather and geography conditions, which is only external cause. Pollution remediation and governance haze have become top priority in Beijing-Tianjin-Hebei Region, even in national...

To investigate the influence of different plant covering on dissolved organic matter (DOM) in forest soils, the DOM characteristics of soil sample in P. massoniana plantation forest and mixed conifer-broadleaf forest of P. massoniana and C. carlesii were researched by using chemical and spectroscopic...

The pulp and paper mill sludge emissions generate a considerable amount of pollutants. Paper mill sludge is high in organic matters which could be used in agriculture as a soil amendment. In this study, a carbonization method for paper mill sludge was established and the effects of carbonized sludge...

Atmospheric pollution is influenced by many uncertain factors, such as the content of pollutants, wind, etc., Therefore, one given environment system can be considered as a grey information system. In this paper, According to the monitoring data of atmospheric pollution in Shijiazhuang city of Hebei...

Based on the monitoring results of Changli Golden Coast Nature Reserve (2009-2014), conditions and trends of seawater and Sediment quality in this area were analyzed. The results showed that: seawater and sediment quality in this area as a whole is better, however, in some years inorganic nitrogen in...

Based on determination of the contents of soil nutrients elements and heavy metals for the four tin mine tailings (Niubahuang, Laochang, Kafang and Southern) in Gejiu, the heavy metal pollution of four tin mine tailings were assessed with the single contamination index method, the comprehensive contamination...

Nine combinations of Cd2+ (0,2.5,5mg•L-1) and microbial flocculant (0,10,20mL•L-1) were set, and the hydroponics was adopted in this experiment to explore the effect of microbial flocculant on the rice growth and Cd accumulation under Cd stress, and chlorophyll content, net photosynthetic rate, plant...

Bacillus mucilaginosus was cultured in the medium containing illite, then the culture was burned in muffle to prepare adsorption material modified by microorganism. The biological modified illite (BMI) was used to adsorb cadmium ions at different conditions. The result showed that BMI had significantly...

PM2.5 particulate pollution is becoming an important risk factor for the health of urban residents in China. In order to quantitatively evaluate the health effects and economic losses of atmospheric particulate matter pollution on residents this study uses exposure-response relationship based on the...

Nowadays, because of the environment factors, such as the related legal policy is imperfect and the management of the construction enterprise does not reach the designated purpose and the management of the construction enterprise does not reach the designated purpose, the environmental management of...

With the rapid development of China's economy, the urbanization process continues to accelerate, increasing the amount of large construction projects, at the same time because of the environmental pollution problems caused by the construction of more and more serious. In this paper, the construction...

In order to realize the process mechanism that Shewanella oneidensis(S. oneidensis ) reduced uranium(VI), and improve its reduction effect, the reduction mechanisms of uranium with S. oneidensis were studied by FTIR, SEM, EDS. The results show that after the S. oneidensis reduction of U(VI), the cell...

Dissolved organic matter (DOM) is a kind of dissolved materials containing humic-like, protein-like and carbohydrates, which distributed widely in various kinds of water body. Due to the complex components, it is hard to analyze fully specific organic fraction. Due to three dimensional excitation-emission...

black and white Aioi of the Chinese traditional culture thought create environmental design from architecture, interior, landscape and create as a whole, mutual support, mutual implication, mutual penetration, transformation, organic whole art of creating the built environment.

nature of Chinese traditional culture thought and environmental art design from different aspects of the environment influences the architecture, landscape and interior construction, but collectively embodies the basic natural, whole and harmonious layout ideas, also in line with the Taoist the idea...

Nuclear power is a clean and efficient energy, the development of nuclear power not only to meet energy needs, but also is an effective solution to the problem of the growing air pollution and greenhouse gas emissions. Maximum pollution is thermal pollution which generated by nuclear power operators,...

The living environment is the base of the survival and development of human, its sustainable development is directly related to the extent of human life and it is one of most important content that measure the progress of human society and culture development. With the rapid development of economy and...

Water park water quality impacts the public health illustrated by the increasing waterborne diseases outbreaks in recent years. Water samples were thus collected and analyzed for chemical constituents, organic matter, from the water park over spring and summer. Water quality varied seasonally with less...

Efficient ventilation and sound air current are significant to improve indoor air quality (IAQ) and control the contamination concentration. Healthy and comfort air-conditioning will provide a strong guarantee for high-performance work. While limited by lots of conditions, the airflow distribution in...

It is difficult to measure non-point source pollution. Compared with other models used in the study of non-point source pollution, INVEST risk assessment is available in agricultural non-point source pollution, which will provide a model for further study of non-point source pollution in large scale...

A pilot scale sequencing batch biofilm reactor (SBBR) for treating wastewater was used for the purpose of investigating treatment performance under different aeration flows(10m3/h 12m3/h 14m3/h 16m3/h 18m3/h 20m3/h 22m3/h 24m3/h),by analyzing the changeable concentra-tion of COD NH4+-N NH3--N NH2--N...

The thin plaster system on Rock Wool exterior wall recently becomes more and more popular in real engineering. That there are lots of superior nature in Rock Wool, such as fire-resistance, good stability and so on, have been gradually accepted. Based on the advantage of the fire-protecting performance...

To study the influence of the air supply-return methods and air supply temperature on the temperature uniformity, several scaled experiments were carried. By comparing of the ceiling hole-board ventilation and diffuser air supply, it is shown that the air supply method of ceiling hole-board with air-in...

According to the monitoring data of content of 8 main heavy metal elements in a certain urban area, this paper conducts a modeling study on heavy mental pollution of superficial soil in cities. According to single-factor concentration evaluation standard and comprehensive evaluation standard (Nemerow...