Treatment process of landfill municipal sludge press filter tail water

Abstract

The invention discloses a treatment process of landfill municipal sludge press filtering tail water, and belongs to the field of sewage treatment. The land resources in China are limited; when no proper treatment technology and no excessive regions are used for sludge landfill, the further volume reduction of the landfill sludge becomes the present searching direction. After chemical conditioning agents are added into the landfill sludge, the tail water subjected to press filtering has complicated ingredients and high contaminant contents; the treatment difficulty is high. By aiming at the pollution characteristics of the tail water, the existing advanced treatment technology can be combined; a combined process of blowoff, inclined pipe precipitation, hydrolysis acidification pool and two-stage biological aerated filter is used for realizing the effective treatment on the tail water with high ammonia nitrogen concentration, low C / N value, low B / C value and high chloride ion concentration; in addition, the operation and the management are simple; the removal effect is stable; the anti-impact load is high; the quantity of the generated sludge is small; the cost is low.

Description

technical field [0001] The invention belongs to the field of sewage treatment, in particular to a treatment process for landfilling municipal sludge press filter tail water. Background technique [0002] By the end of 2015, the sludge output of urban sewage treatment plants across the country reached more than 35 million tons / year, and it is estimated that by 2020, the sludge output will reach 60 million tons / year. At present, the most important methods of sludge disposal in the world include agricultural utilization, sanitary landfill, incineration, and ocean disposal. In my country, sludge treatment and disposal mainly use methods such as landfill, composting, drying, and incineration. These four The proportions of the two treatment methods are 65%, 15%, 6% and 3% respectively. Considering environmental benefits and economic benefits comprehensively, the sanitary landfill of sludge from urban sewage treatment plants across the country has become the main way of sludge disp...

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