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Co-coagulating gas-floating water purifying process

A water purification and co-coacervation technology, which is applied in flotation water/sewage treatment, flocculation/sedimentation water/sewage treatment, etc., can solve the problems of long time, large floor space and high equipment cost

Inactive Publication Date: 2006-09-27
DALIAN JIAOTONG UNIVERSITY
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

This traditional water treatment process takes a long time and requires a coagulation unit, so it occupies a large area and the cost of equipment is high

Method used

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  • Co-coagulating gas-floating water purifying process

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Embodiment Construction

[0017] Please in conjunction with the accompanying drawings, a part of the effluent from the air flotation pool is sucked into the pump body under the action of the gas-liquid mixing pump (19). At the same time, the air is inhaled by negative pressure from the suction port of the gas-liquid mixing pump, and is guided into the vicinity of the impeller of the pump through the air nozzle in the pump body, and the high-speed rotation of the impeller of the water pump cuts and disperses the gas to mix the gas and liquid. The gas-water mixture enters the tank from the lower end of the gas-liquid separation tank (17), increasing the contact time between air and water, and releasing some undissolved excess gas from the automatic air release valve (16) at the top of the separation tank. The formed dissolved air water is decompressed and released through the common valve (20), and the water flows upward into the air flotation reactor (27). Wherein, the size of the air intake is displaye...

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Abstract

The invention provides a Coagglomeration air-float water quality purification process, belonging to water pollution control engineering. This technics is consisted of dissolved-air outgas system, drug adding system, reaction separation system. The dissolved-air adopting solution-air mixing pump and solution-air knockout drum pressurize the part yielding water of floatation pond to dissolvedair, injecting to enter from the bottom of floatation pond; the coagulating agent is imbibed before sewage pump, the mixing course was finished in pipeline and sewage pump, the mixed sewage affluxing from the head of floatation pond; the best distance of dissolved-air water and sewage is about 10cm. the adhesion of air bubble and floc is finished in reaction contact zone of floatation pond, the coagulant aid is added from dissolved-air system, the copolymer of air bubble and floc floating upward to the head of floatation pond from knock-out zone of floatation pond and scraped to slag groove by scum machine. This invention can used to purify nature water, colloid and suspended matter which is produced from the course of production and life, part soluble substance such as azote and phosphate and so on which can lead to eutrophication.

Description

technical field [0001] The invention belongs to the field of water treatment, and in particular relates to a coacervation air flotation water quality purification process. Background technique [0002] Air flotation water purification technology is an efficient and fast solid-liquid separation technology, which starts from mineral processing. After decades of development, this technology has attracted the attention of scholars at home and abroad in the field of water treatment and has developed rapidly. It has been widely used in water supply, especially in the purification of low-temperature, low-turbidity, and algae-rich water bodies, as well as urban sewage. and industrial wastewater treatment. The air flotation process can be divided into electrolytic (coagulation) air flotation, air distribution air flotation and dissolved air flotation according to the different generation methods of bubbles. Partial return pressure dissolved air flotation is the most commonly used pr...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/24
Inventor 费庆志张耀斌许芝高丽
Owner DALIAN JIAOTONG UNIVERSITY
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