The sewage turns into the water purification, continue water to regenerate forever

Sewage disposal system of life of new generation
The sewage turns into the water purification, continue water to regenerate forever
Sustainable Water Resource: Turn Waste Water into Clean Water
Gentle / YanWen Zhang take a photograph of / grow by high good fortune Zou, exhibition of country,

Shen Zhong's mud bearing
And improvement of quality of the life with the development of industry, the water consumption in Taiwan is larger and larger, therefore waste water produced is more and more, treasuring the water resource, and reduce under the trend of the water pollution, the technology of sewage disposal is more and more important.

Build the planning of the administration according to Ministry of Internal Affairs, sewage sewer construction of Taiwan, 3% progress promote with every year, relevant plans at present entered fourth issue, is it at one year, can reach 55% of the goals (about 20% at present) of taking over etc. to expect . Connecting the in charge ofing rate of the sewage sewer, can be regarded as a country's progressive indicator, it can be up to 80% that advanced countries are many at present, even our Malaysia of neighbouring country of Southeast Asia has already been up to eighty percent at present.

There are sewage sewers, there must be enough sewage treatment plants. There are 49 waste water treatment plants in Taiwan operates now, expected to cover 98 more by 2014, it excepts to be already case in construction, whom government manage by oneself have 59 in planning, promote non-governmental participate in have 28. The worker grinds institute energy and the water science and technology of Environmental Research Institute and technological group's group leader Dr. Zhou ShanShan of environmental analysis to explain, because in order to carry out a biological disposal upon more the present sanitary sewage, need to resolve the organic matter in sewages the microorganism, therefore will cause the growth of the microorganism, produce a large amount of biological mud.

The mud is mostly dealt with by way of burying at present, but bigger and bigger for mud amount, burden in environment appear Shen in weight, Taiwan is about 73,000 tons because of the mud amount emerging in waste water treatment every year now too, but according to at being current to planning, sewage of sewer, to one year, mud amount grow up triple, reach more than 230,000 tons. The handling problem of the mud is not merely in Taiwan, in such countries as China, India, Vietnam,etc., Dr.eye: future is all very thorny environmental protection topics too.

Worker grind institute can surround water science and technology and environmental analysis technological Zhang GuanFu Dr., researcher of group, analyse, according to the domestic environmental protection regulation, the mud of the waste water is sorted out as the undertaking offal, must bury it in exclusive burying the factory, in order to avoid the secondary pollution; In vilain's thick environment of Taiwan, it is difficult to look for and bury the place itself, let the cost of waste water treatment rise constantly too. And because there is 80% in the mud it is the moisture, extremely waste the energy by means of burning.

In addition course of waste water treatment will produce marsh gas, if marsh gas the can is it is it use for generate electricity to do to utilize properly, can also increase the environmental protection of sewage disposal and economic benefits further.

Deal with France's pollution still on the high side currently
The present sewage treatment plant of Taiwan can be divided into elementary and second ( Include the above) Deal with the factory, for example 4 kilometers of sewage treatment plants that lie by 13 lines of museums in Taipei, elementary sewage treatment plant, it deal with way to stop and down such full-length objects as the rubbish,etc. so as to the trash rack first, enter Shen sand pool Shen settle gravel, enter pool Shen make suspend organic or inorganic matter Shen settle for the first time later and then, discharge to the sea after the chlorination disinfects finally. But such an elementary treatment, dissolving organic matter and nitrogen material in water are all on the high side.

As for second city sewage treatment plant, after the beginning pool Shen, and then enter second procedure that dealt with, that is to say that utilizes microorganism to carry on the organic matter in water the metabolism, produce a large amount of microorganism, suspend solid and organic matter form reciprocation aggregate particle too ( Generally called glue feather Sludge Flocs) ,This is a main source of mud too, and the sewage after second is dealt with, will enter again end pool Shen, after settling, discharge to rivers and creeks or ocean mud Shen. No matter elementary or second sewage treatment plant, the mud produced stills have nearly 95% of the moisture contents, must after the mud dehydrates, is it bury to undertaking offal factory bury to give (Fig. 1) .

Zhou ShanShan points out, the handling capacity of sanitary sewage is about 3,500,000 tons in the whole one day in Taiwan at present, but there are 800,000 tons only, that is to say about 1/4 of the sewages are dealing with through second, other sewage enter sea while being treated nearly and elementarily, make enough now while being only, so there is very large improvement space. Whether even if second punishes the factory, have some shortcomings. First, adopt the good oxygen to deal with, the occupation of land space is big; Second, the mud amount is big, it is with high costs to operate; Third, the existing system has not got rid of the result to the ammonia nitrogen, to bearing the water body (the rivers and creeks or the ocean) Still cause load; Fourth, treated water quality still remains to improve.

The first is emphasized just, environmental protection administration control standard by nitrogen to ammonia at present, so sewage disposal is it punish to go on even to the ammonia nitrogen at present, but the ammonia nitrogen is too high not only will promote the alga to grow, even will produce toxicity, environmental protection administration is it is it set the flowing water standard free to include standard, ammonia of nitrogen in to plan too future.