Demonstration Project Of IMA Microbial Activation Engineering Technology Repairs Shuang Lun Lake Of Bei Ling Park In Shen Yang City

The urban landscape water is like the blood flowing from the city,spreading the city’s spiritual,rich and beautiful breath of development.However,because of the relatively small area of the urban landscape water body,which is in a relatively closed state for a long time,and a variety of other human factors,the landscape water body is easy to be polluted.The eutropHication of landscape water not only destroys ecological stability and affects the image of civilization,but also is closely related to people’s quality of life.Therefore,the treatment of urban landscape water is imperative.IMA(Indigenous microbial activation)engineering technology: according to the biofilm water treatment technology,through a modified suspending filler,the native microorganism is activated,and the dominant bacteria in the water are cultivated and propagated in large numbers.With the microcirculation of the water body released into the water,the ecological balance of probiotics was changed,the environmental condition of the water was improved,and the polluted water was repaired.The water quality of the Shuanglun lake in Beiling Park,Shenyang,Liaoning Province,is extremely poor and belongs to the class V water body.Every summer cyanobacteria erupt,bloom-forming pHenomenon is serious.This project through IMA microorganism Chemical technology,the two-stage restoration of the Shuanglun lake,improved its water quality,reduced the total amount of pollutants such as COD,nitrogen and pHospHorus,and eliminated the pHenomenon of cyanobacteria.After regulation,the main water quality indexes gradually reached the water body category V standard of "Surface Water Environmental quality Standard"(GB3838-2002).The conclusions are as follows:The first : The first stage of the project(September 3,2016—October 14):according to the environmental quality standards for surface water "(GB3838-2002),activated by IMA microbial engineering technology,after 41 days of repairing,the indicators of Shuanglun Lake were improved,three sampling points average COD,ammonia,TN and TP removal rate 75.6%,65%,74.23% and 82.06%.Before the implementation of the project,COD value greatly,after the implementation of CODreached grade V;ammonia nitrogen and total nitrogen content reached the grade V standard before the project,after the implementation.The content of total pHospHorus was not up to the standard of class V before the implementation of the project,and reached the standard of class V.The chloropHyll content of the lake water was very large,bloom-forming cyanobacteria was serious,and the content of chloropHyll decreased after the implementation of the project.At the same time,the turbidity of the water decreased,the transparency reached 1 meter above.pH stabilized below 8.5,the conductivity decreased,the salt content decreased,and the redox potential increased.The second : The second stage of project(April 15,2017—August 28):According to the National Standard for Environmental quality of Surface Water(GB3838-2002),By IMA microbial activation engineering technology,after 135 days of water restoration,the water quality indexes of the Shuanglun lake in Beiling Park have been significantly improved.On April 15,COD seriously exceeded the standard.After the implementation of the project,the COD reached the class V standard,the ammonia nitrogen reached the class V standard before the implementation of the project,and the ammonia nitrogen index reached the class Ⅲ standard after the implementation,and before the implementation of the project,the total nitrogen and total pHospHorus content were extremely high and did not reach the class V standard.After the implementation of the project,the total nitrogen and pHospHorus reached the class V standard.After the implementation of the project,the chloropHyll content is obvious.The decline in summer cyanobacteria a serious outbreak of the season,but the implementation stage of the project did not occur in cyanobacteria bloom.At the same time,the water turbidity also improved,transparency has reached 1 meters.pH value decreased,the conductivity decreases,the redox potential increased.In short,after IMA activation microbial engineering technology after restoration,water quality in the Beiling Park Shuanglun Lake got a good improvement.The third:Optimization and renovation of the project: according to the climatic characteristics of Shenyang and other engineering conditions,the amount of reagent used is adjusted.In the second pHase of the project,in mid-June,because the temperature of Shenyang is rising in the summer,the water input from the north canalis replenished.The water quality is not good.So the dosage of biological activator is increased from 1 kg once a month to twice a month.1 kg each time.The dosage of biological enzyme needs to be adjusted according to the growth of the membrane.In the initial stage of the project,1 kg is added every two days.The later period of membrane growth is better,so the dosage is changed to 1 kg every 4 days.At the same time,In the course of project implementation,in order to prevent sudden power outages and so on.The accidental condition caused the reagent overflow in the reactor,which affected the repair effect of the project.A reverse stop valve was installed at the intake pipe of the IMA microbial activating equipment.The fourth: The water quality of recharge water(North Canal)and the occurrence of bloom-forming cyanobacteria in different water bodies were analyzed.Compared with Lotus Lake and Great Lake in Beiling Park,the total nitrogen and pHospHorus content in North Canal was relatively high.The pollution of water quality is the most serious.Under the same conditions,such as temperature and light,the North Canal first grows cyanobacteria after 15 days,and the chloropHyll content reaches its peak at first,followed by Lotus Lake 20 days and Great Lakes 26 days,indicating that the higher the total nitrogen and pHospHorus content,the higher the total nitrogen and pHospHorus content.It is concluded that the supplementary water source of Beiling Park in Shenyang,Liaoning Province,has too much water pollution load and high nutrient content,so it is not suitable to be used as a park.Supplementary water source for landscape water body.