Sludge drying condensate water treatment system and method

Abstract

The invention relates to a sludge drying condensate water treatment system which comprises a condensate water pretreatment system, a biochemical treatment system and a membrane treatment system, the condensate water pretreatment system comprises a wastewater regulating tank, a shell-and-tube heat exchanger and an air floatation device; the biochemical treatment system comprises integrated A2O equipment and ABFT equipment; the membrane treatment system comprises combined MBR equipment; the water outlet end of the wastewater regulating tank is connected to the water inlet end of the shell-and-tube heat exchanger through a wastewater pump; the water outlet end of the shell-and-tube heat exchanger is connected to the water inlet end of the air floatation device; wherein the water outlet end ofthe air floatation device is connected to the input end of the integrated A2O equipment, the water outlet end of the integrated A2O equipment is connected to the input end of the ABFT equipment, thewater outlet end of the ABFT equipment is connected to the input end of the MBR tank, and an MBR membrane assembly is arranged in the MBR tank. The system has the beneficial effects that a main pool body of the system adopts an underground steel concrete structure, main equipment adopts integrated steel equipment and can be arranged at the top of a concrete pool, and the space utilization rate isincreased.

Description

technical field [0001] The invention relates to a sludge drying condensate treatment system and method, belonging to the technical field of wastewater treatment. Background technique [0002] With the advancement of my country's ecological civilization construction, the waste and sewage treatment industry has developed rapidly, and the resulting sludge production has also increased day by day. Water treatment sludge usually contains harmful substances such as heavy metals and pathogenic microorganisms. The original sanitary landfill of sludge can no longer meet the existing treatment requirements. Sludge drying and incineration has become the mainstream direction of sludge treatment. [0003] The calorific value of water treatment sludge is high, and the water in the sludge is evaporated through indirect heat transfer of steam, which can greatly reduce the volume of sludge. However, the sludge drying process will produce a large amount of condensed waste water, which will b...

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Problems solved by technology

However, the sludge drying process will produce a large amount of condensed waste water, which will be carried out by the tail gas of the dryer. Part of the oily sludge will cause the condensed water to appear as a white turbid liquid. The main pollutants are COD, BOD, and NH 3 -N, SS, etc., and the discharge temperature of the condenser is still high, effective system treatment must be carried out to meet the discharge requirements

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