Fluoride-containing wastewater treatment system based on constructed wetland assisted by aeration enzymolysis
A technology of constructed wetland and water distribution system, applied in sustainable biological treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of low fluorine removal rate, few fluorine removal processes and high cost , to achieve the effect of low cost, good landscape ecological compatibility and strong impact resistance
Active Publication Date: 2015-07-29
HOHAI UNIV
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In addition to these two types of processes, there are also freezing methods, ion exchange resin defluorination methods, activated carbon defluorination methods, ultrafiltration defluorination methods, and electrodialysis. So far, they have rarely been used in defluorination processes, mainly because of high cost and high cost. Low fluorine rate
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[0019] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.
[0020] like figure 1 As shown, a constructed wetland assisted aeration enzymatic treatment system for fluorine-containing wastewater is characterized in that it consists of a box body 2, wetland plants 4, a water distribution system 3, a water collection device, a filling matrix 5, and a supporting layer 6. The supporting layer 6 is arranged at the bottom of the filling matrix 5, the water collecting device is arranged at the bottom of the supporting layer 6, the water distribution system 3 is arranged above the filling matrix 5, and the filling matrix 5 is gravel and aluminum-containing The mixture of sludge, the middle part of the filling matrix 5 is provided with an aeration pan 8, the aerat...
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The invention discloses a fluoride-containing wastewater treatment system based on a constructed wetland assisted by aeration enzymolysis. The system is characterized by comprising a tank body, wetland plants, a water distribution system, a water collecting device, a filling matrix and a supporting layer, wherein the supporting layer is arranged at the bottom of the filling matrix; the water collecting device is arranged at the bottom of the supporting layer; the water distribution system is arranged above the filling matrix; the filling matrix is a mixture of gravels and aluminum-containing sludge; an aeration disc is arranged in the middle of the filling matrix; the aeration disc is connected with an aeration pump; the water distribution system is connected with an enzymolysis device. According to the fluoride-containing wastewater treatment system based on the constructed wetland assisted by aeration enzymolysis, under the synergistic effect of the adsorption of aluminum-containing sludge and absorption of microorganisms and plants on the surface of the matrix, the pollutants and fluorinion in wastewater can be effectively removed, so that the contents of various types of pollutants in the effluent all meet level II water quality standards specified in Surface Water Environment Quality Standard; in addition, compared with other technologies and method, the constructed wetland has more advantages.
Description
technical field [0001] The invention relates to sewage treatment water ecological restoration technology, belongs to the field of environmental protection technology, and specifically relates to a high-efficiency method for using aluminum-containing sludge as artificial wetland filling material to remove fluoride, supplemented by an aeration and enzymatic hydrolysis method for treating fluorine-containing wastewater system. Background technique [0002] Constructed wetlands emerged in the 1970s. Compared with other mature sewage treatment technologies, they have the advantages of stable effluent water quality, economical infrastructure investment and operating costs, low technical content, and maintenance management. The industry attaches great importance to it. It has even been strengthened and improved and applied to industrial wastewater, secondary treatment of sewage from urban sewage plants, etc. Due to its strong removal capacity for lower concentrations of nitrogen, ...
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Login to View More IPC IPC(8): C02F3/32C02F3/34
CPCY02W10/10
Inventor 李一平杜薇许家俊王静雨戚文卢绪川王文才王建威高小孟代思莫德
Owner HOHAI UNIV