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A typical concrete mix was provided by the professional concrete producer.
Basic mix parameters were: water cement ratio 0,50; cement content 360 kg/m3 (Portland cement 42,5R).

So these toxic heavy metals should be removed from the water to protect the people and the environment.
Ayres, Chemical Principles of Environmental Pollution, Blackie Academic and Professional, London, 1993
Professional Uni.
Charerntanyarak, Heavy metals removal by chemical coagulation and precipitation, Water Sci.
Water Res. 39 (2005) 2167–2177

One of the pathways to high exposure to trace metals is through polluted water consumption.
[3] NIH, Zinc - Fact Sheet for Health Professionals, (2021)
[5] EPA, National Secondary Drinking Water Regulations, Washington DC, 2009
Water Process Eng. 32 (2019) 100920
[24] WHO, Zinc in Drinking Water, 2003

The partition approach is: Firstly, the sea water and tidal flat is separated by water index.
After each time of spectrometry, the soil of 40mm depth and 0.4kg weight on the corresponding point is sampled with a professional soil sampler-a circular cutting ring, the diameter and height of which is 70mm and 52mm respectively.
In Chinese, Bulletin of Soil and Water Conservation, 2007(4):107-113
In Chinese, Advancesin Water Science, 2010(2):59-65
In Chinese,Journal of Water Resources and Water Engineering, 2011(6):130-135+139

The community establishes the unit solely responsible for promoting sustainable development, and invites professional consultants in respect of sustainable development to undertake the action and coordination in relation to sustainable development.
Water environment.
Formulating laws and regulations to protect the clean water environment and its recycling; adopting water-saving technology; improving the community’s standard-reaching rate of sewage discharge; attaching importance to the creation of waterfront and other water-enjoyable-space environment.
In the housing construction, it takes the demand features of human beings and local characteristics into full account and builds high quality apartments; It pay much attention to the efficiency of the water resource utilization.The exclusive rainwater collection and purification system is set up in the community to recycle and make use of the rainwater.
The discharged sewage is also processed to use the recycled water as much as possible; Recycled utilization of renewable materials.

Method: Put nanometer powder TiO2, Al2O3 1.75g separately, sodium hexametaphosphate 0.40g into the round bottom flask with 500mL distilled water.
The sustained-releasing ClO2 method Materials: particle board(Province Timber Quality Testing Center in Guangdong); Dimensions: 600mm×600mm×10mm; Concentrated hydrochloric acid solution: 36%～38%; Sodium chlorite solid(Analytical grade); Twice-distilled water, sodium carbonate, hydrogen peroxide, citric acid, the bead-like water-absorbent resin（d≈2mm）.
Make the excessive hydrochloric acid drip into the round bottomed flask through the separating funnel, and adjust the temperature of thermostatic water bath cauldron to 40 ℃.
Add again 6g round-bead-shaped water-absorbent resin and 1.5g citric acid as activating agents to form the sustained-released chlorine dioxide.
Electric heated water bath 7.

The products of most gas and oil wells contain formation water to a certain degree.
High-salinity formation water corrosion is more common in fracturing wells.
In general, the formation water corrosion of tubing, casing, and equipment includes[1,4,5,6]: a.
Corrosion that is similar to formation water corrosion, including: seawater corrosion, injected water corrosion, highconcentration completion fluid corrosion, injected steam corrosion, and geothermal well production corrosion.
References [1] Wan Renpu: Advanced Well Completion Engineering (Gulf Professional Publishing, U.S. 2011)

Active solar energy heating electricity as auxiliary energy, drive with solar heating water circulating to heating room in the pipeline.
So water source heat pump has good prospect of energy saving.
The sea is the earth's climate and natural regulation of water cycle source, its capacity is huge, and the atmosphere, land by way of energy and material such as water vapor cycle, is a natural capacity of huge cooling and heat sources, low refrigeration heating provides good condition for humanity, sea water heat pump is a good choice.
Application of biomass energy in HVAC, mainly using biogas heating and hot water production, rural application prospect in our country.
As long as the HVAC professional workers, and energy environmental protection workers unremitting efforts, energy consumption of air conditioning system can do better.

Therefore, to prevent the water screen reflection become the focus and difficulty of natural lighting design of the natatorium competition hall.
The average brightness of the luminous flux of water not only depends on the total outside, also depends on the position of the viewer.
Therefore, natural lighting competition hall should ensure that no visual disturbances, control the water reflected light from the natural and artificial light and ensure the good into the water transmission performance, ensure the best results of the match.
Local too bright In the weather sunny, direct lighting intensity of natural light can reach 1000001x, is 133 times the stadium venues professional race lighting standards stipulated by the state value 7501x.
When the direct sunlight to the game hall floor tiles, wall tiles or swimming pool water, brightness is formed by the surface is often beyond the human visual comfort range.

Visual MODFLOW is a three-dimensional visualization professional software which is the most popular software in the international field of assessment and forecast of groundwater [14-15].
At the same time, kept the water-soil ratio was 100: 1(mass).
Application of Visual MODFLOW in Simulation of an Opencast Mine Underground Water [J].
Modeling surface and ground water mixing in the hypothetical zone using MODFLOW and MT3D[J].
Advances in Water Resources,2006(29):1618-1633.