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System and method for treating low-turbidity raw water

A low turbidity, raw water technology, applied in filtration treatment, water/sewage treatment, chemical instruments and methods, etc., can solve problems such as poor flocculation effect, and achieve a reduction in the amount of dosing, low investment and construction costs, and simple process flow. Effect

Pending Publication Date: 2020-03-24
深圳市深水龙岗水务集团有限公司
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Problems solved by technology

Therefore, in view of the poor flocculation effect of the perforated cyclone flocculation tank, it is necessary to explore an efficient, stable and low-turbidity raw water treatment process with acceptable operating costs

Method used

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  • System and method for treating low-turbidity raw water
  • System and method for treating low-turbidity raw water
  • System and method for treating low-turbidity raw water

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Embodiment Construction

[0033] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0034] ginseng Figure 1 to Figure 2 As shown, this embodiment provides a system for treating raw water with low turbidity. The system is sequentially provided with a flocculation tank, a sedimentation tank, a filter tank, a clean water tank, and a water delivery pump room from the water inlet to the water outlet.

[0035] The flocculation strengthening device 1 is respectively provided with a 25mm flocculation strengthening device 11, a 35mm flocculation strengthening device 12, and a 45mm flocculation strengthening device 13;

[0036] The flocculation tank is equipped with a lime dosing system and a polyaluminum chloride dosing system for synergistic flocculation by add...

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Abstract

The invention relates to a system for treating low-turbidity raw water. The system comprises a flocculation tank, a sedimentation tank, a filtering tank and a clear water tank, wherein the flocculation tank, the sedimentation tank, the filtering tank and the clear water tank are sequentially arranged in a direction from water inlet to water outlet, the flocculation tank is provided with a lime feeding system and a polyaluminium chloride feeding system, and is used for adding polyaluminium chloride through the polyaluminium chloride feeding system to flocculate and adding lime through the limefeeding system to adjust the pH value so as to achieve synergistic flocculation, the flocculation tank is further provided with a flocculation strengthening device, the flocculation strengthening device is made of a pine material, and different specifications and different layers of the flocculation strengthening devices are arranged at different flocculation sections, so that the hydraulic condition is optimally adjusted, and the flocculation effect is strengthened. According to the invention, the flocculation strengthening effect is obvious, the turbidity removal effect is stable, the turbidity removal efficiency of low-turbidity raw water is high, installation and maintenance are simple, and investment and construction cost is low.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a system and method for treating raw water with low turbidity. Background technique [0002] In recent years, although urban public facilities have been upgraded successively, and major water supply plants in various cities, districts, and regions have been newly built or expanded, there are still a number of old water supply plants built in the 1980s and 1990s that use coagulation, sedimentation, and filtration. The conventional process of disinfection and disinfection guarantees the water use of residents in the suburbs of cities and villages and towns. At the beginning of the construction of this type of water plant, the water purification structures were designed to meet the water quality standards of the "Drinking Water Sanitation Standard" (GB5749-85). The water quality standard has been improved (GB18918-2006). When operating according to the original d...

Claims

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Application Information

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IPC IPC(8): C02F9/04
CPCC02F1/56C02F1/5236C02F1/001
Inventor 陈海松范漳李婷
Owner 深圳市深水龙岗水务集团有限公司
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