Water pollution of the source outside sufferring is affected, black Wu Hu time and again " clammy 100 " , water system " immune force " all the time poorer. (on October 7) , come from Nanjing environmental protection to monitor a section an investigation shows, the engineering work such as the channel that wear a lake lets mode of self-purification of lake of incredible connecting with the boxing skill produce change. Expert proposal, black Wu Hu should reduce break ground in last few years, grow water plant more, maintain ecological balance.
Environmental protection monitors an expert to investigate discovery, in recent years, because wear the engineering work such as lake channel, black Wu Hu changed structure of mud of lake body bottom already, make mode of water system self-purification arises hard " antibody " , once encounter pollution accentuates, with respect to irremediable. Backfill of high grade earth was not used when working plus backfill, use building rubbish however, more drama water system is exasperate. Many building rubbish remains by lake of area of a few lakes, weighed black Wu Hu substantially greatly " ailment " , among them the building rubbish pollution of boreal lake and southeast lake is apparent.
Details of kingdom of director of research center of environment of zoology of Nanjing Normal University indicates, lake water fluidity is poor, and content of salt of the nutrition in bottom mud deposit is high, it is passed diffuse, the process such as in suspension of convection, deposit releases nurture to water system. Again clear water, although do not have exterior pollution source, those who have the cover or daub with plaster end these inside pollution is enough make whole water qualitative change poor.
Regnal detailed says, a few this years management department of black Wu Hu already realized this problem, strengthen clear to bottom mud silt. Basically be the rubbish that the float silt that exceeding eutrophication, exceeding heavy metal pollutes by cleared lake and tourist discard; To channel of lake of incredible connecting with the boxing skill and area of channel of 9 Mount Hua, affecting channel to use functional premise to fall normally, to earth up of channel of proper and cleared part and building rubbish. "These go up in certain level, helping black Wu Hu restore self-purification ability. Helping black Wu Hu restore self-purification ability..
Environmental protection monitors an expert to return a proposal, the ditch that emits into lake area, culvert must be rectified, put an end to sewage to enter a lake directly. To the contaminant in ab extra fountainhead, should adopt conduit to turn management, wait for sewage emit into urban waste pipe in the net, in order to assure black Wu Hu of make-up water fresh with cleanness.
Hydrophyte to sewage have sorption. The expert thinks, landscape vegetable can be grown in place of the mouth that enter a lake, the plant that hold out water and substance of float Xie Zhi are cultivated in laky periphery, yacht area can be planted among the lake heavy water plant, the bank is planted the plant that hold out water, still can put in a suitable place to breed the fish of filter feeding habits and benthon. -- news source: Yangtse Evening Post
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