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Full-automatic neutralizing treatment system and method for alkaline sewage generated by concrete mixing plant

An alkaline sewage, fully automated technology, used in water/sludge/sewage treatment, water/sewage treatment, chemical instruments and methods, etc., can solve the problems of secondary pollution, excessive water quality, corrosion of equipment, etc. Effects of processing costs

Active Publication Date: 2020-01-17
ZHEJIANG SINOU ENVIRONMENTAL PROTECTION EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, sulfuric acid and hydrochloric acid are highly corrosive, corrode equipment and pose a safety risk to operators. At the same time, a large amount of inorganic salts and chloride ions are produced during the neutralization process, which will cause secondary pollution and excessive water quality.

Method used

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  • Full-automatic neutralizing treatment system and method for alkaline sewage generated by concrete mixing plant

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Fully automatic neutralization treatment of alkaline sewage generated by concrete mixing plants:

[0059] 5000L of alkaline sewage, the initial pH value is 13, and the solid content is 0.43%;

[0060] start up figure 1 The fully automated neutralization treatment system shown, CO 2 Liquid CO in storage tanks 2 by CO 2 The vaporizer is gasified, the carbon dioxide gas flow is 120L / min, and enters the CO 2 spray tower;

[0061] Alkaline sewage flows out from the alkaline sewage tank, respectively, as for CO 2 Spray above the primary spray plate and the secondary spray plate of the spray tower, and at the same time 2 CO in the spray tower 2 Neutralization is carried out, and the sewage treatment liquid obtained by neutralization is returned to the alkaline sewage tank, and the flow rate of the inlet pump and the return pump are both 20m 3 / h; the pH electronic monitor monitors the pH of the sewage in the alkaline sewage pool in real time, and transmits the monitori...

Embodiment 2

[0064] Fully automatic neutralization treatment of alkaline sewage generated by concrete mixing plants:

[0065] Alkaline sewage 6500L, initial pH value 13.2, solid content 0.62%;

[0066] start up figure 1 The fully automated neutralization treatment system shown, CO 2 Liquid CO in storage tanks 2 by CO 2 The vaporizer is gasified, the carbon dioxide gas flow rate is 150L / min, and enters the CO 2 spray tower;

[0067] Alkaline sewage flows out from the alkaline sewage tank, respectively, as for CO 2 Spray above the primary spray plate and the secondary spray plate of the spray tower, and at the same time 2 CO in the spray tower 2 Neutralization is carried out, and the sewage treatment liquid obtained by neutralization is returned to the alkaline sewage tank, and the flow rate of the inlet pump and the return pump are both 20m 3 / h; the pH electronic monitor monitors the pH of the sewage in the alkaline sewage pool in real time, and transmits the monitoring results to ...

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Abstract

The invention provides a full-automatic neutralizing treatment system and method for alkaline sewage generated by a concrete mixing plant, belonging to the technical field of sewage treatment. The system provided by the invention comprises a CO2 storage tank, a CO2 vaporizer, a CO2 spray tower, an alkaline sewage pool and an electronic control system, wherein a pH electronic monitor and a stirrerare arranged in the alkaline sewage pool; a CO2 electronic valve, a water inlet pump and a water return pump are respectively arranged on a connecting pipeline of the CO2 vaporizer and the CO2 spray tower, an outlet pipeline of the alkaline sewage pool and an outlet pipeline of the CO2 spray tower; the pH electronic monitor transmits signals to the electronic control system; and the electronic control system automatically controls the opening and closing of the CO2 electronic valve, the water inlet pump and the water return pump. The invention also provides the method for carrying out full-automatic neutralizing treatment on alkaline sewage by utilizing the system. According to the system and the method provided by the invention can avoid the defects generated by neutralization via hydrochloric acid, sulfuric acid or other mineral acids and realize full automation.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a fully automatic neutralization treatment system and method for alkaline sewage produced by a concrete mixing plant. Background technique [0002] Concrete mixing stations will produce a large amount of alkaline sewage during production and equipment cleaning. Alkaline sewage contains a large amount of inorganic salts (calcium salts, magnesium salts), free ions (calcium ions, magnesium ions, hydroxide ions) and deactivated concrete components. Direct discharge of alkaline sewage will cause serious pollution and damage to groundwater, domestic water and the natural environment; while alkaline sewage is directly reused without treatment, the free ions and inorganic salts in it will corrode equipment and pipelines or cause scaling and blockage risk, and the loss of active concrete components has a serious impact on product quality, which in turn affects the quality of con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/66
CPCC02F1/66C02F2201/002
Inventor 倪孔森
Owner ZHEJIANG SINOU ENVIRONMENTAL PROTECTION EQUIP CO LTD
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