a settling clarifier

Abstract

Belonging to the technical field of sewage and wastewater treatment, the invention in particular relates to a novel sedimentation clarification pool, which includes a magnetic flocculation hybrid reaction tank and a sedimentation tank. The sedimentation tank is composed of a sedimentation tank body, a guide shell water saving device, an inclined tube and support, a sludge scraper, a clear water outlet weir and water outlet, and a mud discharge port. The sedimentation clarification pool is characterized in that: the bottom of the sedimentation tank is provided with a sediment discharge port, the sediment discharge port is connected to a magnetic mud separation system, and the magnetic mud separation system includes a magnetic mud shearer, a magnetic mud separator and a pipeline. The sediment is sent into the magnetic mud separation system from the sedimentation tank by a pump, and magnetic powder and nonmagnetic substances are separated by means of the magnetic mud separator. Through the magnetic performance of the added magnetic powder, the magnetic powder and other nonmagnetic substances in the magnetic mud are effectively separated. The novel sedimentation clarification pool provided by the invention has the characteristics of good effluent water quality, high magnetic powder recovery rate, simple system structure, and low cost, etc.

Description

technical field [0001] The invention belongs to the technical field of sewage and wastewater treatment, and in particular relates to a sedimentation clarifier. Background technique [0002] Sedimentation method is a traditional solid-liquid separation technology. Sedimentation water purification technology is widely used at home and abroad. The principle is that suspended solids with a density heavier than water settle naturally under the action of gravity, thereby separating from water. Loaded flocculation technology belongs to heterogeneous nucleation, that is, adding high-density insoluble granular medium to water, and using the gravity settling property of the medium to accelerate the formation of flocs and promote their precipitation. Since the 1990s, loading flocculation technology has been gradually applied, of which the main types are: sand loading flocculation (Actiflo) and magnetic loading coagulation (CoMag). [0003] Sand-loaded flocculation technology (Actiflo)...

AI Technical Summary

Problems solved by technology

[0007] But the above-mentioned technology that adopts the hydrocyclone to separate magnetic substances has the following defects: 1. The hydrocyclone separates substances by different specific gravity, so when there are impurities with a larger proportion in the sludge at the bottom of the pool, it will also flow along the hydrocyclone. The wall of the device slides down together and re-enters the flocculation tank, which is difficult to completely separate and remove, which is a serious waste of resources; 2. In order to further purify the recovered magnetic substances that re-enter the flocculation tank, multiple hydrocyclones are often used in series to separate them multiple times , which brings defects such as huge system, complex structure, inconvenient operation and high cost

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