Treatment system for wastewater without sewage sludge

Abstract

The invention relates to a wastewater and sludge treatment technique, which particularly provides a sludge and wastewater free treatment system. The system comprises grilles, an aerated grit chamber, a hydrolysis acidification pond, an oxidation pond and a secondary sedimentation pond which are orderly connected, and the system also comprises a disinfection pond, a slag pond, a slag concentration tower and a sludge dewatering machine. When the system is operated, the wastewater passes through wide and narrow grilles to remove large impurities and enters the aerated grit chamber for sedimentation treatment, the discharged water enters the hydrolysis acidification pond; by a sludge bed in the hydrolysis acidification pond, the wastewater and reflux slag sludge are captured and the slag sludge is decomposed; the wastewater after the sedimentation treatment passes through a fixed type biological bed in the oxidation pond for biological treatment, the discharged water enters the secondary sedimentation pond for slag sedimentation, the discharged water after the slag sedimentation enters the disinfection pond for disinfection treatment, the water after the disinfection treatment can be discharged or reutilized, and the sedimentation slag is sent to the slag pond, and is concentrated by the slag concentration tower and is sent to the sludge dewatering machine for dewatering treatment. The sludge and wastewater free treatment system has the advantages of low equipment investment, low operating cost and good effect of wastewater treatment.

Description

technical field [0001] The invention relates to sewage and sludge treatment technology, in particular to a sewage and sludge treatment system. Background technique [0002] With the acceleration of China's urbanization and the rapid advancement of industrialization, the population of China has increased by the size of New York every year. From the perspective of industrialization, the annual GDP has remained at about 8%, which has brought about a very large demand for water and water resources. At the same time, China is also like the process experienced by other developing countries. At this stage, the water pollution is the most serious. The three major pollution sources of urban domestic sewage, industrial sewage and agricultural sewage have not been effectively controlled and treated. The sewage is harmful to urban groundwater and inland lakes. Environmental pollution has become increasingly prominent and has posed a serious threat to our lives and health. In addition, ...

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Problems solved by technology

At the same time, sludge is a by-product of sewage treatment, and a large amount of sludge has caused increasingly severe secondary pollution.

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