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Circulating dechlorination process and system

A process and technology of dechlorination agent, applied in the field of wastewater treatment, can solve the problems of difficulty in recycling, high price, and poor dechlorination effect of dechlorination agent

Inactive Publication Date: 2021-07-06
山东国舜节能环保科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the deficiencies in the prior art, the application provides a kind of circulation dechlorination process and system, and the circulation dechlorination process of the present invention uses Bi 2 (H 2 O) 2 (SO 4 ) 2 (OH) 2 or Bi 2 (H 2 O) 2 (SO 4 ) 2 (OH) 2 The dechlorination agent that is the active ingredient dechlorines the waste water, and treats the dechlorination product to realize circular dechlorination, which realizes that the existing dechlorination agent has poor dechlorination effect, large dosage, expensive price and is difficult to recycle. Defects, not only improve the efficiency of chlorine removal, but also realize the cycle of chlorine removal process, reduce the cost, and realize the industrial application of bismuth-containing chlorine removal agent

Method used

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  • Circulating dechlorination process and system
  • Circulating dechlorination process and system
  • Circulating dechlorination process and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] Example 1 Preparation of Chlorine Removal Agent

[0087] The diameter and height of the medicine preparation box are both 1.3m, and the bottom area is 1.32665m 2 . The liquid level height that 100L solution needs to reach is 0.07538m, namely the height of about 7.5cm. The mixer is about 20cm from the bottom.

[0088] Open the desalinated water valve of the reactor, add 600L desalinated water (the amount of water is determined by measuring the liquid level of the preparation tank), open the agitator, see figure 1 a. Add 100kg (four barrels) of Bi 2 o 3 -L raw material ( figure 1 b-c), open the lift pump of the sulfuric acid tank and related valves, slowly add 100L sulfuric acid while stirring ( figure 1 e). Cover the lid of the reaction box and stir for 2 hours. After the reaction finishes, open the valve connected to the centrifuge, transfer the slurry to the centrifuge in batches and carry out dehydration, and the supernatant is directly discharged after the...

Embodiment 2

[0105] Add 500L of high-purity desalted water into the medicine preparation box ( Figure 8 a), turn on the agitator, and slowly add 67L of concentrated sulfuric acid using the concentrated sulfuric acid metering pump (the sulfuric acid metering pump has been working at 100% for half an hour; theoretically, 106L should be added, but this time it was added less, because there was a mistake when observing the liquid level ),See Figure 8 b, after stirring for 10min, add 100kg bismuth oxide ( Figure 8 c and 8d), continued to stir for 1.5 hours, and the medicament turned white ( Figure 8 e), indicating that the preparation of the medicament is substantially complete. In fact, within the visible range of the meat, the white color when the bismuth oxide has just been added is not much different from that after stirring for 1.5 hours.

[0106] After stirring for 1.5 hours, the prepared slurry was introduced into a centrifugal dehydrator for centrifugal dehydration, and the separ...

Embodiment 3

[0108] Aiming at the problem that sulfuric acid dosage is too little and filter cloth mesh number is not enough in embodiment 2, this embodiment adds sufficient sulfuric acid and adopts 8000 mesh filter cloths. The experimental steps are as follows:

[0109] Open the desalted water valve of the reactor, add 600L desalted water (the amount of water is determined by measuring the liquid level height of the preparation tank and the internal diameter of the reactor). Turn on the agitator, open the lifting pump of the sulfuric acid tank and related valves, and add 100L of sulfuric acid while stirring. Add 100kg Bi slowly (the actual feeding speed is faster than the first pilot test) 2 o 3 -L raw material (four barrels), see Figure 10a-c. Cover the reaction box lid, after stirring for 2 hours, there is also unreacted yellow block powder in the preparation box ( Figure 10 d). After the reaction, the valve connected to the centrifuge was opened, and the slurry was transferred ...

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Abstract

The invention provides a circulating dechlorination process which is characterized in that Bi2(H2O)2(SO4)2(OH)2 or a dechlorination agent taking Bi2(H2O)2(SO4)2(OH)2 as an active component is adopted for dechlorination, a dechlorination product after dechlorination is regenerated to obtain a regenerated product, the regenerated product continues to prepare the dechlorination agent to participate in dechlorination, or the regenerated product continues to participate in dechlorination, and circulation is carried out in this way. The process is good in dechlorination effect, the first-time dechlorination effect can reach 99%, cyclic dechlorination can be achieved, and the dechlorination efficiency is still kept at 80% after repeated cyclic use.

Description

technical field [0001] The application relates to the technical field of wastewater treatment, in particular to a process and system for circulating chlorine removal. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the application, and is not necessarily regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art known to those skilled in the art. [0003] The high content of chloride ions in wastewater will not only corrode equipment, but also cause poisonous effects on human body, fish, vegetation and buildings. At present, in the total amount of wastewater discharged each year in my country, wastewater with high chlorine content accounts for a large proportion and has a wide range of sources. The treatment of chloride ions in high chlorine-containing wastewater is difficult and costly, which has posed a major challenge ...

Claims

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Application Information

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IPC IPC(8): C02F1/58C02F1/38C02F101/12
CPCC02F1/38C02F1/58C02F2101/12
Inventor 仇洪波杨凤岭吕扬吕杨杨吕和兴孙德山于友水乔正泽付迪杨正大宋甲亮尹鹏李智阳管闯
Owner 山东国舜节能环保科技有限公司
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