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Novel special compound agent for high-hardness high-silicon industrial wastewater

A technology for industrial wastewater with high hardness, which is applied in water softening, water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problem of membrane performance degradation, increase system operation and start-up costs, and affect the use of reverse osmosis membranes. Issues such as the treatment efficiency of the life-span wastewater treatment system

Pending Publication Date: 2020-05-22
宜兴市荣盛达环保有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] A large amount of industrial wastewater such as coal chemical gasification gray water with high hardness and high silicon compound content, due to the high hardness and silicon (usually recorded as silicon dioxide) content, is likely to cause fouling and blockage of equipment and pipelines, resulting in production equipment having to be stopped for cleaning or replacement Pipelines and equipment seriously affect the long-term stable operation of the process system, and greatly increase the cost of system operation and start-up and shutdown
At the same time, in the advanced treatment of such high-hardness and high-silicon wastewater, due to the high silicon content, the reverse osmosis membrane will scale in a short time and is difficult to clean, resulting in reduced membrane performance or even failure, which greatly affects the performance of the reverse osmosis membrane. The service life and the treatment efficiency of the wastewater treatment system have increased the cost of water treatment, which has become a difficult problem for coal chemical enterprises

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] High-hardness and high-silicon industrial wastewater new special compound agent, the agent includes six components of sodium hydroxide, sodium carbonate, polyferric sulfate, ferrous sulfate, polyaluminum chloride and polyacrylamide, the sodium hydroxide The mass fraction is 1 part, the mass fraction of sodium carbonate is 3 parts, the mass fraction of polyferric sulfate is 1.2 parts, the mass fraction of ferrous sulfate is 0.75 part, and the mass fraction of polyaluminum chloride is 0.15 part, The mass fraction of polyacrylamide is 0.015 parts.

[0015] The dosage of the sodium hydroxide is related to the alkalinity in the waste water, the mass concentration ratio of the dosage to the alkalinity is 2:3, and the dosage is 200mg / l.

[0016] The dosage of the sodium carbonate is related to the hardness content in the waste water, the mass concentration ratio of the dosage to the hardness is 1:1, and the dosage is 600mg / l.

[0017] The dosage of the polyferric sulfate is r...

Embodiment 2

[0022] A new type of special compound agent for wastewater with high hardness and high silicon compounds. The agent includes six components: sodium hydroxide, sodium carbonate, polyferric sulfate, ferrous sulfate, polyaluminum chloride and polyacrylamide. The sodium hydroxide The mass parts are 4 parts, the mass parts of sodium carbonate are 10 parts, the mass parts of polyferric sulfate are 10 parts, the mass parts of ferrous sulfate are 5 parts, the mass parts of polyaluminum chloride are 0.5 parts, The mass fraction of polyacrylamide is 0.05 parts.

[0023] The dosage of the sodium hydroxide is related to the alkalinity in the wastewater, the mass concentration ratio of the dosage to the alkalinity is 2:3, and the dosage is 800 mg / l.

[0024] The dosage of the sodium carbonate is related to the hardness content in the waste water, the mass concentration ratio of the dosage to the hardness is 1:1, and the dosage is 2000 mg / l.

[0025] The dosage of the polyferric sulfate is...

Embodiment 4

[0030] A new type of special compound agent for high hardness and high silicon industrial wastewater. The agent includes six components: sodium hydroxide, sodium carbonate, polyferric sulfate, ferrous sulfate, polyaluminum chloride and polyacrylamide. The sodium hydroxide The mass fraction is 2 parts, the mass fraction of sodium carbonate is 10 parts, the mass fraction of polyferric sulfate is 10 parts, the mass fraction of ferrous sulfate is 5 parts, and the mass fraction of polyaluminum chloride is 0.5 part, The mass fraction of polyacrylamide is 0.05 parts.

[0031] The dosage of the sodium hydroxide is related to the alkalinity in the waste water, the mass concentration ratio of the dosage to the alkalinity is 2:3, and the dosage is 200mg / l.

[0032] The dosage of the sodium carbonate is related to the hardness content in the waste water, the mass concentration ratio of the dosage to the hardness is 1:1, and the dosage is 2000 mg / l.

[0033] The dosage of the polyferric s...

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Abstract

The invention discloses a novel special compound agent for high-hardness high-silicon industrial wastewater. The agent is prepared from the following six components by mass: 1-4 parts of sodium hydroxide, 3-10 parts of sodium carbonate, 1.2-10 parts of polyferric sulfate, 0.75-5 parts of ferrous sulfate, 0.15-0.5 part of polyaluminum chloride and 0.015-0.05 part of polyacrylamide. According to thenovel special compound agent for the high-hardness high-silicon industrial wastewater, the problem that long-period stable operation of a production device is affected due to scaling and blockage ofequipment and pipelines easily caused by the high-hardness high-silicon compound content coal chemical industry gasification wastewater is solved.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a new special compound agent for high-hardness and high-silicon industrial wastewater. Background technique [0002] A large amount of industrial wastewater such as coal chemical gasification gray water with high hardness and high silicon compound content, due to the high hardness and silicon (usually recorded as silicon dioxide) content, is likely to cause fouling and blockage of equipment and pipelines, resulting in production equipment having to be stopped for cleaning or replacement Pipelines and equipment seriously affect the long-term stable operation of the process system, and greatly increase the cost of system operation and start-up and shutdown. At the same time, in the advanced treatment of such high-hardness and high-silicon wastewater, due to the high silicon content, the reverse osmosis membrane will scale in a short time and is difficult to clea...

Claims

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Application Information

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IPC IPC(8): C02F5/02C02F1/56C02F1/52
CPCC02F5/02C02F1/56C02F1/5245C02F1/5236
Inventor 丁海荣王庆芬牟鑫韩俊海
Owner 宜兴市荣盛达环保有限公司