Investigation of Organic Pollutants in Dewatered Sludge of Wastewater Treatment Plant and Evaluation of Targeted Disposal Methods

The indexes of seven kinds of organic pollutants in dewatered sludge of three sewage treatment plants in one city were investigated, and the further optimization countermeasures for sludge disposal were put forward according to different pollutant contents in sludge according to the relevant standards for sludge disposal of urban sewage treatment plants. The total content of organic components in the dewatered sludge of one sewage treatment plant is the highest relative to the sludge disposal standard, followed by the content of adsorbable organic halides, which is relatively high, and the content of volatile phenol is very low, but it still does not meet the agricultural standard, which directly leads to the fact that the dewatered sludge can not be used for agriculture, and limits the harmless, resource and reduction disposal of dewatered sludge. At present, the existing sludge treatment and disposal methods of one sewage treatment plant are basically feasible, but the stacking of sludge will increase the environmental risk for a long time.