Study On The Effect Of Different Plant Combinations On The Removal Of Pollutants In Guanzhong Waterlogging

In guanzhong area,waterlogging caused serious water pollution,caused inconvenience to local residents,and seriously affected the local surface water quality.This paper study on the four waterlogging in the village of Shaogong Villalge,Zhujiayuan Village,Xiaoziling Village,Heiyu Village of Baoji city,and Che Village,Dexing Village of Weinan City.Found guanzhong pond "high nitrogen,high phosphorus and COD,"the current situation of pollution and the corresponding aquatic plant growth condition,the local pond through gathering since the dominant species of wetland water plants with artificial combination experiment,study different plant collocations of the guanzhong pond water removal efficiency of pollutants,with water ammonia nitrogen,nitrate nitrogen,total phosphorus and COD as the main index,on the removal efficiency of pollutants in water were analyzed,and by using vector included Angle cosine method to calculate tertiary evaluation index weight value,the main conclusions are as follows:(1)These village water of ammonia nitrogen,nitrate n,itrogen,total phosphorus and COD concentration exceeds bid badly,the water quality of the overall situation for "high nitrogen,high COD,nitrate nitrogen content is higher this is the direct cause of the high nitrogen water.(2)The removal efficiency of NH4+-N,NO3-N,TP and COD in water reaches 80.78%?93.32%,65.61%?80,65%,66.13%?93.86%and 60.32%?70.37%,respectively,through the biochemical processes of N,P and COD absorption and microbial degradation and transformation by different combinations of aquatic plants(3)One suitable plant(plant 31 spring Onions per square meter of water;plant 3.0 kg of goldfish per cubic meter of water;plant 31 calamus per square meter of water;the water coverage of lotus leaves reached 10.45%),This plant collocation reached about 96%for Water pollution.This plant combination is preferred for water restoration.(4)The purification efficiency of plants combination one of high COD water bodies is better,with the removal rate reaching 73.49%;the purification efficiency of plants combination two pairs.(plant 31 spring Onions per square meter of water;plant 31 Typhas per square meter of water;plant 31 reeds per square meter of water;the water coverage of lotus leaves reached 10.45%).of high-nitrogen(ammonia nitrogen,nitrate nitrogen)water bodies is better,with the removal rate reaching 89.22%;the purification eff-iciency of plants combination four(plant 31 Typhas per square meter of water;plant 3.0 kg of goldfish per cubic meter of water;plant 31 calamus per square meter of water;plant 31 reeds per square meter of water)of high-phosphorus water bodies is better,with the removal rate reaching 82.28%.