Treatment technology for high-concentration production wastewater

A technology for waste water production and treatment process, which is applied in water/sewage treatment, heating water/sewage treatment, degassed water/sewage treatment, etc. It can solve problems such as environmental pollution, waste of resources, comprehensive utilization of resources, etc., and achieve deamination efficiency. High, low equipment operating costs, to achieve the effect of comprehensive utilization

Active Publication Date: 2019-03-29
QIDONG A&P CHEM FACTORY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In the process of producing phenylhydrazine hydrochloride and phenylhydrazine, a large amount of productive process wastewater will be produced. The wastewater contains a large amount of organic matter phenylhydrazine and inorganic salts such as ammonium chloride, ammonium sulfate, and sodium chloride; if not treated, it will be Pollution to the environment and waste of resources
At present, the main treatment method for this type of wastewater is to first use MVR multi-effect evaporation to e

Method used

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  • Treatment technology for high-concentration production wastewater
  • Treatment technology for high-concentration production wastewater
  • Treatment technology for high-concentration production wastewater

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Embodiment

[0032] In this embodiment, the high-concentration production wastewater treatment process includes phenylhydrazine hydrochloride mother liquor wastewater and phenylhydrazine mother liquor wastewater, such as figure 1 As shown, the treatment process includes the following steps:

[0033] Step 1: Mix the acid phenylhydrazine hydrochloride mother liquor wastewater and the alkaline phenylhydrazine mother liquor wastewater, and pass ammonia gas to adjust the pH value of the wastewater to 2.5, then pump the blended wastewater into the mixing tank, and then add ammonia, continue Adjust the pH value of wastewater to 6.2;

[0034] Step 2: The mixed wastewater of phenylhydrazine hydrochloride mother liquor wastewater and phenylhydrazine mother liquor wastewater with a COD content of 20000mg / L and a pH of 6.2 after neutralization in step 1 is sent to 6 sets of single adsorption at an inflow of 8-12m³ / h In a resin adsorption device composed of a resin adsorption column with an effective resin ...

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Abstract

The invention relates to a treatment technology for high-concentration production wastewater. The high-concentration production wastewater comprises phenylhydrazine hydrochloride mother liquor wastewater and phenylhydrazine mother liquor wastewater, and the phenylhydrazine hydrochloride mother liquor wastewater and the phenylhydrazine mother liquor wastewater are treated by adopting the process flow comprising macro-porous resin adsorption, super-gravity stripping deamination, sulfur removal, ozone catalytic oxidation, loading chimerism, four-effect downstream evaporation concentrating separation and fluidized bed spray granulation. The treatment technology can reduce the treatment cost, and can recycle effective ingredients in the production wastewater.

Description

Technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a treatment process for high-concentration production wastewater of phenylhydrazine hydrochloride and phenylhydrazine. Background technique [0002] In the process of producing phenylhydrazine hydrochloride and phenylhydrazine, a large amount of production process wastewater will be produced. The wastewater contains a large amount of organic phenylhydrazine and inorganic salts of ammonium chloride, ammonium sulfate, sodium chloride, etc.; if not treated, it will be Pollution to the environment and waste of resources. At present, the main treatment method for this type of wastewater is to first use the MVR multi-effect evaporation method to vaporize the salt in the wastewater, and then use the biochemical treatment method to treat the effluent. The disadvantage of this method is that it produces a large amount of mixed salt hazardous waste. Comprehensive treat...

Claims

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Application Information

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IPC IPC(8): C02F9/10C01F11/24C01D3/04C01F11/30C02F101/30
CPCC01D3/04C01F11/24C01F11/30C02F9/00C02F2303/16C02F1/28C02F1/04C02F1/20C01P2006/82C02F1/78C02F1/66C02F1/725C02F1/5236C02F1/56C02F2001/007C02F2101/30
Inventor 李锦山王海荣李正健
Owner QIDONG A&P CHEM FACTORY
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