Ecological treatment system and method for cold-rolling reverse osmosis strong brine

A technology for ecological treatment and concentrated brine, applied in metallurgical wastewater treatment, chemical instruments and methods, water/sewage multi-stage treatment, etc., can solve environmental pollution and other problems

Active Publication Date: 2016-03-02
BAOSHAN IRON & STEEL CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In order to solve the problem of environmental pollution of cold-rolled reverse osmosis concentrated brine, the object of the present invention is to provide an ecological treatment system and method for cold-rolled reverse osmosis concentrated brine. Using the ecological system of the present invention, the one-time investment is low and the operation is simple , the production and treatment cost is low; after the cold-rolled reverse osmosis concentrated brine is treated by the ecological treatment system, the COD and total nitrogen in the effluent water quality are lower than the national discharge standards, and various heavy metals in the concentrated brine are also efficiently removed, which is environmentally friendly. Green environmental protection treatment process of iron and steel wastewater

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  • Ecological treatment system and method for cold-rolling reverse osmosis strong brine

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Experimental program
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Effect test

Embodiment 1

[0053] The water quality of the cold rolling wastewater reverse osmosis concentrated brine: conductivity 6800μs / cm, COD 55mg / L, pH 7.51, turbidity 16NTU, ammonia nitrogen 5.1mg / L, total nitrogen 11.3mg / L, total phosphorus 0.4mg / L L, oil 4.87mg / L, chromium 0.01mg / L, iron 0.7mg / L, Zn 0.2mg / L, Ni 0.2mg / L.

[0054] The cold-rolled reverse osmosis concentrated brine enters the water inlet tank through the water inlet pipe, and a triangular weir is designed on the water inlet tank, and the water inlet flow is adjusted by controlling the constant water level of the water distribution tank. The brine in the water inlet tank enters the water inlet gravel rectification area through the water distribution partition. The opening ratio of the water distribution partition is 35%, and the hole diameter is 40mm. The function of the influent gravel rectification area is that the energy of the waste water flow is eliminated in the inflow rectification area, so that the waste water flow enters ...

Embodiment 2

[0068] The water quality of the cold rolling wastewater reverse osmosis concentrated brine: conductivity 7600μs / cm, COD 58mg / L, pH 7.91, turbidity 18NTU, ammonia nitrogen 5.1mg / L, total nitrogen 11.3mg / L, total phosphorus 0.4mg / L L, oil 4.87mg / L, chromium 0.02mg / L, iron 0.9mg / L, Zn 0.3mg / L, Ni 0.3mg / L.

[0069] The cold-rolled reverse osmosis concentrated brine enters the water inlet tank through the water inlet pipe, and a triangular weir is designed on the water inlet tank, and the water inlet flow is adjusted by controlling the constant water level of the water distribution tank. The brine in the water inlet tank enters the water inlet gravel rectification area through the water distribution partition. The opening rate of the water distribution partition is 40%, and the hole diameter is 42mm. The function of the influent gravel rectification area is that the energy of the waste water flow is eliminated in the inflow rectification area, so that the waste water flow enters t...

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Abstract

The invention provides an ecological treatment system and method for cold-rolling reverse osmosis strong brine. The treatment system comprises a water inflow pipe, a water inflow tank, a water distributing partition plate, a water inflow gravel commutating zone, fly ash ceramsite filler, manganese sand filler, a sand bed layer, an anti-seepage layer, modified montmorillonite filler, covering soil, plants, a water outflow gravel commutating zone, a water outflow tank, a water outflow liquid level control part and a water outflow pipe. The ecological treatment system is used for treating the reverse osmosis strong brine, one-time investment is low, running and operation are easy, and production and treatment cost is low; after the cold-rolling reverse osmosis strong brine is treated through the ecological treatment system, COD and total nitrogen of outflow water are lower than the national emission standard, various kinds of heavy metal in the strong brine can also be efficiently removed, and the ecological treatment system is an environment-friendly steel and ion waste water treatment technology.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to an ecological treatment system and method for cold-rolled reverse osmosis concentrated brine. Background technique [0002] 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 treatment and reuse of wastewater in iron and steel enterprises. One of the keys to the sustainable development of my country's iron and steel enterprises. [0003] At present, the country's discharge standards for wastewater and related "energy saving and emission reduction" policies are gradually improving. On October 1, 2012, the new "Water Pollutant Discharge Standards for the Iron and Stee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F103/16
Inventor 叶倩吕维群糜建青黄翔峰张宜莓徐竟成朱荣健赵雪兵陆斌李恩超
Owner BAOSHAN IRON & STEEL CO LTD
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