A kind of sludge dewatering treatment process using biological flocculant

Abstract

The present invention relates to a sludge dehydration treatment process using biological flocculants, in particular to a rotary diaphragm plate frame sludge press filter dewatering treatment system, including a base, a rotary frame, a diaphragm plate frame assembly, and a plate frame pressing mechanism , a sewage injection mechanism and a rotary drive mechanism; the treatment system involved in the treatment process provided by the present invention uses a circular distribution arrangement to replace the structural layout of a traditional plate and frame filter press machine that adopts a linear distribution arrangement, and the use of a rotary structure design can reduce the biological flocculant conditioning time. The overall processing efficiency can be improved by a short stirring time, which can promote the further flocculation effect of the biological flocculant in the filter press machine, thereby improving the dehydration efficiency and reducing the moisture content of the mud cake. In addition, the circumferential layout reduces the space occupied by the site.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, and specifically proposes a sludge dehydration treatment process in which a biological flocculant is added. Background technique [0002] Sludge refers to the semi-solid or solid substances produced in the process of domestic sewage treatment and industrial wastewater treatment, including primary sludge, secondary sedimentation tank sludge, chemical sludge and digested sludge, etc. Sludge is mainly composed of water, volatilization Composed of permanent solid organic matter and ash inorganic matter. [0003] In order to realize the rationalization and harmless treatment of the sludge produced after the treatment of domestic sewage or industrial wastewater, and reduce the pollution of the sludge to the environment, it is generally necessary to dehydrate the sludge first and then carry out the corresponding follow-up treatment; sludge dehydration treatment It refers to the process of remo...

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Problems solved by technology

[0005] 1) In the process of filter press dehydration, only the static filtration method can be used, that is, after the diaphragm plate and frame are pressed together, the diaphragm is compressed to achieve compression and filtration. The filtration process is static filtration. In order to ensure that the bioflocculant will Sludge water achieves the best flocculation effect before it is injected into the press filter cavity through the sludge pump, so a longer stirring time is required in the conditioning tank to improve the flocculation effect, which reduces the overall processing efficiency of sludge dewatering;

[0006] 2) The layout structure design of linear distribution makes the structure of the whole filtering mechanism not compact enough, which will occupy a large space of the dehydration workshop;

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