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A method for uniform water treatment system clarifier sludge layer

A water treatment system and clarifier technology, which is applied to the feeding/discharging device of the sedimentation tank, the sedimentation tank, etc., can solve the problems such as the difficulty of uniformity of the mud and slag layer, the influence of flocculation, and the short reaction time, so as to avoid penetration. and the effect of short flow

Active Publication Date: 2016-03-23
JIANGSU RUI JI DING ZHOU TECH ENG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of pool has the following problems: the volume of the reaction chamber is small, the reaction time is short, and the return flow of sludge is difficult to control, which affects the contact and flocculation of the return sludge. In addition, the sludge layer is unstable and the sedimentation efficiency is low. The effect is unstable, and the amount of treated water is limited, generally no more than 7,500 tons per day, which can no longer meet the needs of the increase in urban water demand and the improvement of water quality standards
If the water output of the clarification tank is greater than 5,000 tons / day, the pond covers a large area, and the sludge layer in the clarification tank occupies a large area. Affected by hydraulic conditions, the sludge layer in the system is difficult to be uniform and prone to occurrence The short flow affects the quality of the effluent, so the uniformity of the sludge layer in the clarifier is directly related to the stability of the clarifier operation

Method used

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  • A method for uniform water treatment system clarifier sludge layer
  • A method for uniform water treatment system clarifier sludge layer
  • A method for uniform water treatment system clarifier sludge layer

Examples

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Embodiment 1

[0015] Example 1 This process is used in the transformation of a waterworks. The original process of the water plant is a 312.5 ton / hour hydraulic circulation clarifier. The process of the present invention is used for transformation. The area of ​​the water distribution pipe 3 is 2.54m 2 , the lower part is equipped with 12 diversion pipes, the diameter is DN200, and the total area of ​​the diversion pipes is 0.3768m 2 , is 14.8% of the water distribution pipe 3 area. The included angle M of the draft pipe is installed at an angle of 30 degrees. After installation, the clarifier runs stably. When the turbidity of the influent water in the clarifier is 60~180NTU, the turbidity of the effluent is stable within 5NTU.

Embodiment 2

[0017] A newly-built waterworks with a scale of 20,000 tons / day adopts the process of the present invention, and the area of ​​the water distribution pipe 3 is 6.65m 2 , the lower part is equipped with 16 diversion pipes with a diameter of DN200, and the total area of ​​the diversion pipes is 0.5024m 2 , is 7.6% of the water distribution pipe 3 area. The included angle M of the draft pipe is installed at an angle of 30 degrees. After installation, the clarifier runs stably. When the turbidity of the influent water in the clarifier is 80~150NTU, the turbidity of the effluent is stable within 8NTU.

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Abstract

The invention belongs to the technical field of water treatment, in particular to a method for uniforming the sludge layer in a clarification tank of a water treatment system. In the present invention, a plurality of diversion pipes are arranged on the side of the bottom of the water distribution pipe, and the diversion pipes are located in the sludge layer; the installation directions of the diversion pipes are consistent, so that the water outlet of the diversion pipes can push the sludge layer, so that the suspended sludge The layer moves slowly laterally inside the clarifier, and forms a cross-flow with the upflow water flow, thus ensuring the uniformity of the sludge layer inside the clarifier. The uniformity of the sludge layer avoids the phenomenon of short flow of the sludge layer inside the clarifier, which not only ensures the uniformity of the clarifier water outlet, but also ensures the quality of the outlet water of the clarifier tank.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and relates to a clarification process of a water treatment system, in particular to a method for uniform sludge layer of a clarification tank. Background technique [0002] The coagulation treatment process of water and wastewater includes three stages: mixing of water and chemicals, reaction and separation of flocs and water. The clarifier is a special equipment that completes the above three processes in one. As early as the 1930s, clarifiers using the principle of contact flocculation to remove suspended solids in water began to be used internationally, and it has become one of the main flocculation techniques in water plant design. Since the early 1960s in my country, hydraulic circulation clarifiers have been used. Due to their simple structure, low investment, and no need for complicated electromechanical equipment, they are widely used in water plants in small and medium-sized ci...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D21/02B01D21/24
Inventor 何坚刁小莉
Owner JIANGSU RUI JI DING ZHOU TECH ENG CO LTD