A waste water crystallization system containing sodium sulfate

A crystallization system, sodium sulfate technology, applied in the directions of alkali metal sulfite/sulfite, alkali metal sulfite/sulfate preparation forms, water pollutants, etc., can solve the problem of unoptimistic service life and large energy consumption. , the problem of high product cost, to achieve the effect of saving energy, reducing floor space, and compact structure

Active Publication Date: 2019-08-06
JIANGSU RUISHENGHUA ENERGY TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing treatment process requires a variety of large-scale equipment, requires a large area, and the process is long, consumes a lot of energy, complex operation, high personnel costs, high product costs, and the service life is not optimistic

Method used

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  • A waste water crystallization system containing sodium sulfate
  • A waste water crystallization system containing sodium sulfate
  • A waste water crystallization system containing sodium sulfate

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0026] Such as Figure 1 to Figure 9 , a waste water crystallization system containing sodium sulfate, including waste water tank 1, distilled water preheater 2, steam preheater 3, circulation pump 4, evaporation crystallization tank 5, vapor-liquid separator 6, solid-liquid separator 7, centrifuge Separator 8, mother liquor tank 9, and reflux pump 10, distilled water preheater is connected with steam preheater, steam preheater is connected with circulating pump, and the outlet of circulating pump is connected with the inlet port 11 of evaporation crystallization tank, and the outlet The feed port 12 is connected with the crystallization chamber, and the discharge port of the evaporation crystallization tank is connected with the solid-liquid separator. The evaporation crystallization tank 5 is sequentially provided with a heat exchange chamber...

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Abstract

The invention relates to a sodium-sulfate-containing wastewater crystallizing system. A wastewater heater is communicated with an inlet of a circulating pump, an outlet of the circulating pump is communicated with a feeding port of an evaporation crystallizing tank, a discharging port of the evaporation crystallizing tank is communicated with a solid-liquid separator, a discharging pump is arranged between the solid-liquid separator and the evaporation crystallizing tank, and the solid-liquid separator is further communicated with a liquid inlet of the evaporation crystallizing tank; a centrifugal separator is connected with the solid-liquid separator, a mother liquid tank and a finished product collection tank, the mother liquid tank is connected with the inlet of the circulating pump through a backflow pump, a steam inlet and a steam outlet are arranged on the evaporation crystallizing tank, an inlet of a steam-liquid separator is communicated with the steam outlet while an outlet of the same is communicated with the steam inlet through a centrifugal compressor, and an outlet of the steam-liquid separator is further communicated with a liquid inlet of the evaporation crystallizing tank. The sodium-sulfate-containing wastewater crystallizing system is compact in structure, small in occupied area, low energy consumption, long service life and good evaporation crystallizing effect.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a wastewater crystallization system containing sodium sulfate. Background technique [0002] The wastewater discharged from chemical industry, electric power, metallurgy and other industries contains a lot of salt, especially in water treatment, because the water softening process will introduce a lot of SO 4 2- Plasma, so that the effluent wastewater contains a large amount of sodium sulfate. If these high-salt wastewater is directly discharged, it will cause sudden salinization and damage the ecological environment. Therefore, it is of far-reaching significance to treat such high-salt wastewater to achieve zero discharge and turn waste into treasure for resource utilization. [0003] For the treatment of such high-salt wastewater containing sodium sulfate, thermal treatment process and membrane concentration treatment process are usually used at present. The exi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/04C02F9/10C01D5/00
CPCC01D5/004C02F1/00C02F1/048C02F2101/101
Inventor 张小江马恩禄李敏
Owner JIANGSU RUISHENGHUA ENERGY TECH CO LTD
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