As a result of the Suzhou industry garden area
further developmentconstruction and the garden area
range of service expansion, theperipheral villages
and towns sewage turns on one after another,smears
the water volume rapid rise, the garden area always
plans thedirt water volume from 50 ten thousand m3/d
adjustment is always 90ten thousand m3/d, because
the tailwater discharging place water
bodyenvironmental capacity and with the place limit,
the existing gardenarea dirt water works finally
designs the scale only to be able by 50ten thousand
m3/d adjustment to be 60 ten thousand m3/d,
thereforethis design constructs the Suzhou industry
garden area second dirtwater works, finally processes
the scale is 30 ten thousand m3/d. Inthis design
sewage treatment craft through oxidation ditch craft
andtraditional active sludge law as well as in turn -
like biologicalresponse pond craft comparison,
because the oxidation ditch craftcompares the
traditional active sludge law to have the processing
flowsimply, the operation management is convenient;
Water leakage waterquality good, craft reliability
strong and so on characteristic, -likethe biological
response pond craft also has the project
investmentcomparatively in turn lowly, the water
leakage water quality stable,the engineering
construction experience is rich and so on
thecharacteristic, therefore uses the oxidation ditch
craft. But in thesludge processing craft the sludge
thickening craft concentrates twokind of plans
through the comparison gravitation thickening and
themachinery, because the machinery concentration
plan has the totalinvestment to be low, to
environment influence smaller
characteristic,therefore uses the machinery
concentration plan. This design flow forthe sewage
after the water pump promotion after the thin grill
, initially sinks the pond to enter the
Carrouseloxidation ditch reaction system, removes in
the sewage the organicpollutant, after two sinks the
pond spate separation, finallydisperses into the Wu
Songjiang river by the ultraviolet raydisinfection,
the water leakage achieves a national level of
Bstandard. In the sewage treatment process produces
the sludge afterthe machinery concentration, the
dehydration finally handles tothe garden area sewage
sludge processing handling center.
Because industrial park in Suzhou is further of development construction and the extension of area service scope in the park, peripheral village dirty water connects to go into one after another, total dirty water quantity quick ascension, the park area always programs dirty water, the quantity adjusts to 900,000 ms 3/d from 500,000 ms 3/d, in order to being subjected to tail water to exhaust the environment capacity of a water body and using ground of restriction, existing park area the dirty water factory is end to design scale can from 500,000 m 3/d adjust is 600,000 m 3/d, therefore this design construction the second in industrial park in Suzhou dirty water factory, end processing scale is 300,000 ms 3/d.The wastewater treatment craft passes to oxidize ditch craft and the tradition live and dirty mire method in this design and alternative the type living creature respond the comparison of pond craft, in order to oxidizing the ditch craft more traditional live and dirty mire method to have process of processing in brief, operation management convenience;Water fluid matter good, the strong etc. characteristics of the craft credibility, more the alternation type living creature respond a pond craft and have an engineering investment low, water fluid matter stability, the engineering constuct an experienced etc. characteristics, so the adoption oxidize a ditch craft.But dirty mire processing craft in dirty mire concentrated the craft pass comparison gravity inspissation and machine to condense two kinds of projects, because the machine inspissation project has total investment low, to surroundings the environment influence a smaller characteristics, therefore adopting a machine inspissation a project.The process of[with] this design for dirty water after water pump promoting sink sand pond through thin space grid and 曝 spirit, beginning sink pond juniors to oxidize ditch reaction system into the Carrousel, clean dirty and aquatic and organic pollutant, through two sink pond mire humidity to leave, end is lined up by the ultraviolet ray disinfection into the river of Wu 淞 , water attains a nation one class B standard.In the wastewater treatment process output dirty mire after machine condensing, dehydrating send to park area dirty water dirty mire a processing the end treatment of the treatment center.