Press Release

  • jùn mǎ Speech at ITTC

    Presentation ITTC

    • Speech of jùn mǎ at the International Technology Transfer in Beijing and Guiyang on April (ITTC 2014)
    • Topic: Energy savings solution along with a substantial diminution of carbon dioxide (CO2)
    • Session “Smart City and The City of Future Technology Innovation in China “.

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    • Album : ITgium
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    • Album : Press Release : Shrimps diseases in China
      <b>Slide1</b> <br />
    • Album : Chemical disinfection
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    • Album : Saving energy
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    • Album : Urban planning
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    • Album : Sediment treatment and valorization
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  • World energy dramatic consumption increase…


  • …that cause serious consequences.


  • How can we reduce the energy consumption ?


  • Right approach : China Saving Energy Stiffer Law 严格 法律


    • Standing Committee of China's National People's Congress (NPC), the country's top legislature, has voted to adopt revisions to the Environmental Protection Law, enshrining environmental protection as the government's overriding priority, with specific articles and provisions on smog.
    • For the first time, the law has established clear requirements for ecological protection.

  • One solution : Saving Energy in Building 大楼 节约能源


    • In a typical European household, well over half the money spent on fuel bills goes towards providing heating and hot water, so it makes sense to invest in the most energy-efficient heating system.
    • So the main sector of energy savings is found in the housing communities.

  • Concrete example : Housing Saving Energy (Tianjin 天津)


    • Location : Bīnhǎi Xīn Qū (滨海新区)
    • Building, 40 floors, 30 000 m2
    • Concern Equipment : Heating or Air Conditioning
    • Estimated investment cost : $ 10,000
    • Return on investment : 13 months
    • Estimated 3 years Energy savings : $ 50,000
    • White certificate earning : $ 3,500

  • Example : Boilers Saving Energy China Potential Market


    Considering surface of more than 5000 m2 :
    • 12 millions of device today in activity has to be checked.
    • 25 % has to be replaced.
    • 75 % has to be rejuvenated through a saving energy device.
    • China boilers with saving energy device implementation market is estimated to a level of 24 billions of yuans (2,3 Md US$).

  • Chaoyang Saving Energy Plan 節能 计划朝阳区 節能 计划


    What could be for the 5 years to come a plan to slash the energy consumption and to reduce the CO2 emission in the Cháoyáng Qū ?
    A triple project target
    • A reduction of the pollution and the emission of CO2
    • Inhabitants of buildings will save money on their energy bill
    • The Municipality will get to a new source of income

  • Chaoyang Estimates Saving Energy Plan

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  • Saving Energy means Saving Money for your properties ! 节省


    How to save money and add value to your real estate through an ecological way ?
    5 five ways to do it !
    In Europe :
    (1) For the housing building equipped with saving energy devices, the market rental values, yields and acquisition prices have steadily increased :
    • 2011 : + 3 %
    • 2012 : + 2,7 %
    • 2013 : + 2,6 %
    (2) Those ones that haven’t such equipment have experienced a sharp decrease that intensified over the years :
    • 2011 : - 2 %
    • 2012 : - 2,6 %
    • 2013 : - 4,7 %

  • Europe Saving Energy Plan


    (1) In Europe, residential building consumption represents 45 % of the total energy cost (2013).
    This is the main sector of energy savings.
    (2) Under the Renewable Energy Directive 2012/0288 (COD), the EU aims to get 20% of its energy from renewable sources by 2020.

  • Carbon Trading : The White Certificate


    • A white certificate, also referred to as an Energy Savings Certificate (ESC), is an instrument issued by an authorized body guaranteeing that a specified amount of energy savings has been achieved.
    • The white certificates are given to the producers whenever an amount of energy is saved whereupon the producer can use the certificate for their own target compliance or can be sold to (other) parties who cannot meet their targets.
    • Each certificate is a unique and traceable commodity carrying a property right over a certain amount of additional energy savings and guaranteeing that the benefit of these savings has not been accounted for elsewhere.

  • Saving Energy Regulation, examples


  • White certificate : How it works ?


  • China Science J

    China Science 中国 科学
    The "Four Great Inventions" (四大发明; sì dà fāmíng) are the
    • Compass 指南针 zhǐ nán zhēn
    • Gunpowder 火药 huǒ yào
    • Papermaking 造纸 zào zhǐ
    • Printing 印刷品 yìn shuā pǐn

  • Chinese History

    The China Way 中国 前景
    • 千里之行﹐始於足下。
    Qian li zhi xing, shi yu zu xia.
    A journey of a thousand miles begins with a single step.
    老子 Laozi
    • 不管黑猫白猫,捉到老鼠就是好猫。
    Buguan hei mao bai mao, zhuo dao laoshu jiu shi hao mao.
    No matter if it is a white cat or a black cat; as long as it can catch mice, it is a good cat.
    邓小平 Dèng Xiǎopíng

  • Slide15

  • Urban Saving Energy Project


    • Designing a city-wide questionnaire survey upon heating equipment
    • Measuring the annual fuel utilization of housing communities
    • Establishing consumption categories and GHG emissions accounting methodology
    • Data processing and analysis of the survey results, including influencing factor analysis and profiling of low, medium and high GHG emission households and communities.
    • Estimates evaluation of today city energy global cost and saving energy estimates
    • Agenda statement
    • Implementation of the device according to a comprehensive plan

  • Estimates Saving Energy project


    During two months. The survey is engaged, district by district, during three months.

  • Saving Energy Solution : The DJP ENERGY experience


    • ECO REGULATOR - designed to cut back the energy cost on existing boilers in substantial housing estates and public amenities.
    • 20 % of Energy Saving on Boilers.

  • China CO2 Savings


  • China Air Pollution Perspective


  • GDP & Pollution Trend


  • China Air Pollution


  • CO2 China Emission


  • Air Pollution effects


  • CO2 Diseases


  • China Air Pollution Death Toll


  • World Death Toll per area


  • Tags

  • Méta

  • Site counters

Three Gorges dam growing sedimentation condemns its hydroelectric potential

Posté par ITgium le 12 June 2014



François de la Chevalerie jùn mǎ 俊 马 and Professor Levacher (University of Caen)

Located in Hubei province, near the city of Yichang, the Three Gorges Dam is the largest of the world for water control and hydropower productivity.

Built up thanks to a deviation of the Chang Jiang River, it is structured around a reservoir with a surface area of 1084 km2.

Bigger than the Itaïpu Dam (Brazil), the hydroelectric power plant consists of two sections: on the left, 14 turbo generators, on the right, 12 turbo generators.

The set offers a powerful 18720 MW. According to experts, the dam is expected to provide 10% of China electricity consumption.



Sometimes quoted as a sustainable development project, the Three Gorges Dam suggests anxiety.

In addition to pollution and Eco system damage, the dam disrupts and alters the sediment cycle.

Upstream the river, crossing the Tibetan plateau, sludge inflates the Chang Jiang.

Due to an intense deforestation and desertification, soil is friable. Weakened banks permit landslides. Coupled with land overuse, sediment decreases the water velocity. Each year, 500 million tons are deposited in the river gorges, including the retention lake. At the work achievement in 2009, the pressure affected already its hydroelectric potential up to 50%.

Furthermore, sediments accumulation exerts a strong pressure on the structure and could lead to its cracking. Because the Eurasian and the Yangtze plate are not stable, the risk of an earthquake does exist. In recent years, low-magnitude earthquakes have produce landslides. In the event of a large-scale one, the Dam breaking could happen.

Downstream the river, sediment played before a role of natural fertilizer. Because of their decrease, agrochemicals use should be now required. So it will intensify water pollution. Already levels of phosphorus and nitrogen are twenty times higher than the standards. In addition, the sediment reduction may push back the River delta. Moreover, in winter, it accelerates saline groundwater within the delta.

 Three Gorges dam growing sedimentation condemns its hydroelectric potential dans China Sediment issues bararge-trois-gorges-300x200

three gorges dam

To challenge this situation, the solution could imply the sediment removal.

Given their volume, it requires considerable resources. Downstream the river sediment transportation looks like a titanic operation, quite impossible to manage.

Another answer is to valorise directly the sediments but they are heavily contaminated.

The dam construction has been swallowing 1300 coalmines, 178 garbage dumps, 1500 slaughter, etc. In fact, sediment offers an unprecedented variety of harmful heavy metals, toxic microorganisms, and so on.

Their eventual recovery in construction materials suggests chemical treatments (for instance, their encapsulation). Dehydrating process but given their enormous volume, the operation is likely unworkable.

The so-called Three Gorges sustainability depends on the sediment treatment.

Long underrated, the issue has been taken into account by the Chinese authorities, which have agreed with a 1.5 billion $ a budget to grant an efficient solution to the sediments future.


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