Manganese Sand Fluidized Bed-Ultrafiltration-UV Disinfection Groundwater Iron and Manganese Removal Device

Abstract

The invention relates to a device for removing iron and manganese from underground water through manganese sand fluidized bed-ultrafiltration and ultraviolet disinfection. The device for removing the iron and manganese from the underground water through the manganese sand fluidized bed-ultrafiltration and ultraviolet disinfection comprises a control chamber, a manganese sand fluidized bed-ultrafiltration chamber and an ultraviolet disinfection chamber, a water inlet pipe is arranged in the manganese sand fluidized bed-ultrafiltration chamber, a rotary membrane turntable and a stirring device are arranged in the manganese sand fluidized bed-ultrafiltration chamber, manganese sand in the manganese sand fluidized bed-ultrafiltration chamber is fluidized under the stirring action of the rotary membrane turntable and the stirring device, oxides formed by oxidizing iron and manganese ions in the underground water are intercepted by the rotary membrane turntable, suspended-state ferromanganese oxides and manganese sand are separated due to different sedimentation performances, and ultrafiltration water coming out from the manganese sand fluidized bed-ultrafiltration chamber is disinfected by the ultraviolet disinfection chamber. The integrated device is simple in structure and easy to operate, backwashing does not need to be carried out, manganese sand utilization rate is high, water treatment cost is low, iron and manganese can be removed at the same time, removal efficiency is high, and effluent quality can stably reach the drinking water standard for a long time.

Description

technical field [0001] The invention belongs to the field of water treatment, and in particular relates to a manganese sand fluidized bed-ultrafiltration-ultraviolet disinfection groundwater removal device for iron and manganese. Background technique [0002] In most areas of my country, there is a common problem of high iron and manganese content in groundwater, which does not meet the requirements of industrial production and people's daily drinking. At present, common methods for removing iron and manganese from groundwater include: coagulation precipitation, chemical precipitation, potassium permanganate oxidation method, Ion exchange method, contact oxidation method, microbial oxidation method, etc. [0003] The contact oxidation method is a commonly used technology for removing iron and manganese from groundwater. This technology is to directly enter the groundwater containing iron and manganese into the filter tank through simple aeration. Under the action of the catal...

AI Technical Summary

Problems solved by technology

This technology has the advantages of no need to add chemical reagents, simple aeration, short process, good and stable effluent quality, etc. However, when the classic contact oxidation iron and manganese removal tank is in use, the filtration resistance is large and a high operating pressure is required. High energy consumption; at the same time, the filter packing layer is easy to block, requiring frequent backwashing, resulting in increased energy consumption and waste of water resources. When iron and manganese exist in groundwater at the same time, the presence of iron will interfere with the removal effect of manganese

[0004] In practical applications, the method of first-stage filtration to remove iron and second-stage filtration to remove manganese is often used, and the process flow is complicated.

Due to Mn 2+ Oxidized to MnO 2 The speed of the manganese active oxide film is relatively slow, and the mature period of the manganese active oxide film is long, and due to the interference of external factors such as aeration and scouring in the contact oxidation tank, the manganese active oxide film cannot be formed sometimes, and the manganese removal effect is unstable.

The combination of ultrafiltration technology and oxidation technology provides a new method for removing iron and manganese from groundwater. The ultrafiltration method has the characteristics of good removal effect and high efficiency. can be widely used

Images