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pH value precise controlling fluorine removing complete equipment system

A technology with precise control and a complete set of equipment, which is applied in the direction of water treatment parameter control, water pollutants, neutralized water/sewage treatment, etc., can solve the problems of difficult control of calcium hydroxide dosage, pH value fluctuations, etc., and achieve saving The effects of consumption, loss reduction, and avoidance of waste of resources

Pending Publication Date: 2019-04-09
THE IT ELECTRONICS ELEVENTH DESIGN & RES INST SCI & TECHNOLOGICAL ENG
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Problems solved by technology

[0005] 3. The use of calcium hydroxide instead of calcium chloride to remove fluoride can adjust the pH while removing fluoride; but when the pH is neutral, a small amount of acid and alkali will cause large fluctuations in the pH value. For the control of the dosage of calcium hydroxide High difficulty

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  • pH value precise controlling fluorine removing complete equipment system
  • pH value precise controlling fluorine removing complete equipment system

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Embodiment Construction

[0028] The following will be combined with Figure 1-Figure 2 The present invention is described in detail, and the technical solutions in the embodiments of the present invention are clearly and completely described. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0029] Fluoride ions in acidic fluorine-containing wastewater mainly exist in the form of hydrofluoric acid. After adding calcium hydroxide, the reaction is mainly: 2HF+Ca(OH) 2 ⇋2H 2 O+CaF 2 . It can be seen from the formula that the addition of calcium hydroxide can correspondingly remove fluoride ions, and at the same time consume the same amount of acid, that is, there is a certain correspondence between the amount of calcium hydroxid...

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Abstract

The invention discloses a pH value precise controlling fluorine removing complete equipment system which comprises a wastewater collecting pond, a wastewater pump lifting pump, a PH detector A, a PH detector B, a PH detector C, a wastewater mixing and PH adjusting device, a high precision proportional control valve A, a high precision proportional control valve B and a setting pond. The pH value precise controlling fluorine removing complete equipment system saves use of reagents, saves the construction cost of a PH adjusting water pond and avoids waste of resources while removing fluorine ions effectively.

Description

technical field [0001] The invention relates to a complete set of fluorine removal device, in particular to a complete set of fluorine removal device system with precise control of pH value. Background technique [0002] Modern industries such as: electronic component production, metal etching, electroplating, pesticide production and other processes will produce a large amount of fluorine-containing wastewater, and the concentration of fluoride ions is high. At present, the most widely used technologies for treating fluorine-containing wastewater in China are chemical precipitation, coagulation precipitation and adsorption. Among them, the coagulation sedimentation and adsorption methods are suitable for the treatment of low-concentration fluorine-containing wastewater; the precipitation method is often used for high-concentration fluorine-containing wastewater; nowadays, the most widely used precipitation method is the addition of calcium chloride, which is formed by the c...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/66C02F101/14
CPCC02F1/66C02F2101/14C02F2209/06
Inventor 邹克肖劲戈黄超曾超唐亚赵世能
Owner THE IT ELECTRONICS ELEVENTH DESIGN & RES INST SCI & TECHNOLOGICAL ENG
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