Phosphorus recycling integrated device for sludge digestion liquid and sludge filtrate

Abstract

The invention relates to the technical field of water treatment and relates to a phosphorus recycling integrated device for sludge digestion liquid and sludge filtrate and a method thereof. The sludgedigestion liquid and the sludge filter-press filtrate are pumped into a reactor by a water pump from a water inlet pipe; a phosphate ore crystallization zone, a sewage clarification zone and a sludgesedimentation zone are sequentially arranged in the reactor from top to bottom, a sludge discharging pipe is arranged at the bottom of the reactor, an aeration device is arranged on the reactor and above the sludge discharging pipe, and an ammonium magnesium phosphate crystallizing zone above the aeration device is provided with a stainless steel plate; a slope degree of an inclined face of an upper section of the reactor is 30 degrees to 60 degrees, the sewage clarification zone is arranged at the periphery of the upper section of the reactor, the periphery of the sewage clarification zone is communicated with a water outlet weir, the water outlet weir is communicated with a water outlet pipe, and liquid can be drained away through the water outlet pipe; the reactor is provided with an automatic chemical adding device and a pH meter.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to an integrated phosphorus recovery device for sludge digestion liquid and sludge filtrate. Background technique [0002] Phosphorus is a non-renewable resource, its extraction comes from phosphate rock, and it is mainly returned to the earth's crust through the application of chemical fertilizers and biological metabolism. According to the current development speed, the lack of phosphorus resources will affect the normal production of humans in a few years. Life, so phosphorus resource recovery is becoming more and more important. Phosphorus recovery from sewage treatment is an effective form of "turning waste into treasure", which can not only effectively reduce the eutrophication of water bodies, but also alleviate the gradual shortage of phosphorus resources. [0003] Domestic sewage treated by biological methods will inevitably produce sludge. Generally, the total pho...

AI Technical Summary

Problems solved by technology

It solves the problem of difficult resource recovery and subsequent treatment in the current domestic sewage sludge. It has the advantages of good phosphorus recovery effect, high efficiency, less secondary pollution, simple operation and equipment maintenance, and good quality of recovered phosphate rock.

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