Processing system and processing method of strong brine from reverse osmosis of coking

A processing system and processing method technology are applied in the field of processing systems for coking reverse osmosis concentrated brine, and can solve problems such as environmental pollution

Active Publication Date: 2015-12-16
BAOSHAN IRON & STEEL CO LTD +1
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Problems solved by technology

[0010] In order to solve the problem of environmental pollution caused by the direct discharge of coking reverse osmosis concentrated brine, the purpose of the present invention is to provide a treatment system and method for coking reverse osmosis concentrated brine. Using the standard-reaching treatment system of the present invention, the one-time invest

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  • Processing system and processing method of strong brine from reverse osmosis of coking

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Embodiment Construction

[0038] A coking reverse osmosis concentrated brine treatment system, including a water inlet tank, a water inlet pump, a packing tank, a large aerobic tank, a small aerobic tank, a biological sedimentation tank, a water outlet tank, a nitrification sedimentation tank, a sludge return pump, and a nitrification sedimentation tank inlet Water pumps, nitrification sedimentation tank sludge pumps, mechanical mixers, air pumps, aeration sand heads, combined packing, sludge discharge valves, carbon source solvent pools and metering pumps.

[0039] The water quality conductivity of the reverse osmosis concentrated brine of the coking wastewater is 11000-19000 μs / cm, the chloride ion is 1500-5000 mg / L, the sulfate ion is 300-700 mg / L, the pH is 6-9, and the total nitrogen is 60-170 mg / L. L, nitrate nitrogen is 30~140mg / L, ammonia nitrogen is 25~75mg / L, COD is 40~520mg / L, BOD is 20~60mg / L.

[0040] The coking reverse osmosis concentrated brine flows into the water inlet tank through the...

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Abstract

The invention provides a processing system of strong brine from reverse osmosis of coking. The processing system comprises a water inlet tank, which is connected to a filler tank, a large aerobic tank, a small aerobic tank, a biological sedimentation basin, and a water outlet tank in sequence through pipelines. The large aerobic tank is connected to a nitration sedimentation basin through pipelines, and the nitration sedimentation basin is connected to the filler tank. A sludge reflux pump is arranged at the bottom of the nitration sedimentation basin and is used for enabling sludge to get in the large aerobic tank. The small aerobic tank is connected to a carbon source dissolving tank through pipelines, and the carbon source dissolving tank pumps dissolved carbon sources into the small aerobic tank through a metering pump. According to the processing system, one-time investment is low; operation is simple, and the production and processing cost is relatively low. Environment-friendly green environment-protecting processing technology of iron and steel waste water is provided. Based on the quality and quantity of strong brine from reverse osmosis of coking, the economical and efficient processing system for discharging strong brine, up to the standard, from reverse osmosis is developed.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a treatment system and method for coking reverse osmosis concentrated brine. Background technique [0002] As my country's basic industry, the iron and steel industry has developed rapidly since the reform and opening up, and has been in a high-speed development stage in recent years. However, the iron and steel industry is an industry with high energy consumption, high resources and high pollution, and its water consumption is huge, accounting for about 14% of the national industrial water consumption. [0003] The unit water consumption of my country's iron and steel enterprises is still higher than that of foreign advanced iron and steel enterprises. It is necessary to further reduce the new water consumption per ton of steel in iron and steel enterprises, improve the recycling rate of water in iron and steel enterprises, and strengthen the comprehensive tr...

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Application Information

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IPC IPC(8): C02F9/14C02F3/00C02F3/30
Inventor 李恩超金学文张宜莓侯红娟张永杰胡利光王鼎尹婷婷
Owner BAOSHAN IRON & STEEL CO LTD
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