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Treatment system and treatment method for aerospace propellant wastewater

A wastewater treatment system, aerospace technology, applied in multi-stage water treatment, water/sewage treatment, special compound water treatment, etc., can solve problems such as high inorganic content, difficult treatment, intermittent generation of wastewater

Pending Publication Date: 2017-03-08
厦门科滤膜技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, the wastewater has the characteristics of intermittent generation, periodic failure, high content of organic and inorganic substances, and difficult to degrade, so it is difficult to treat

Method used

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  • Treatment system and treatment method for aerospace propellant wastewater
  • Treatment system and treatment method for aerospace propellant wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] use figure 1 The process route of the system, aerospace propellant wastewater COD=20900mg / L, pH=0.43, salt content 7.3%, water body color is dark blue, opaque, wastewater contains oximes, oximes, hydrazine, oxalic acid di Pollutants such as ethyl oxalohydrazide, after step 1 pH adjustment and micro-electrolysis reaction, the COD = 11791mg / L, the pH value is 3.55, and the salt content is 4.71%; after the Fenton reaction, the COD = 4791mg / L , and after subsequent coagulation precipitation, neutralization, tubular ultrafiltration and reverse osmosis separation, the product water COD=43mg / L, pH=7.8, no oximes, oximes, hydrazine, diethyl oxalate were detected Pollutants such as oxalodihydrazide meet the requirements for reuse.

Embodiment 2

[0037] use figure 2 The process route of the shown system, its difference with embodiment 1 is, passed through 2 grades of Fenton reaction devices, and what the first grade Fenton reaction device adopts is swirl mixing Fenton reaction device; The secondary Fenton reaction device is Photoelectric Fenton reaction device using gas diffusion electrodes. Its water inflow and the previous process are all the same as in Example 1. What the product water adopts through the first-stage Fenton reaction device is a swirl mixing Fenton reaction device, and the COD is=4878mg / L, and then through the second-stage Fenton reaction device. After using the photoelectric Fenton reaction device with gas diffusion electrodes, the COD is = 2769mg / L. After subsequent coagulation precipitation, neutralization, tubular ultrafiltration and reverse osmosis separation, the reverse osmosis produced water COD = 33mg / L, pH = 7.5 , No oximes, oximes, hydrazine, diethyl oxalate oxalyl dihydrazide and other...

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Abstract

The invention discloses a treatment system for aerospace propellant wastewater. The treatment system is characterized by comprising a pH (potential of Hydrogen) regulation pond, a micro-electrolysis reaction tower, a Fenton reaction device, a neutralization pond, a coagulation reaction pond and a settling pond, wherein the pH regulation pond, the micro-electrolysis reaction tower, the Fenton reaction device, the neutralization pond, the coagulation reaction pond and the settling pond are connected in sequence through pipelines; a sludge outlet of the settling pond is connected with a sludge pond and a pressure filter in sequence through pipelines; a supernatant fluid outlet of the sludge pond is connected with the coagulation reaction pond through a pipeline; a supernatant fluid outlet of the settling pond is connected with an intermediate water pond and a tubular membrane separation device in sequence through pipelines; a yielding water outlet of the tubular membrane separation device is connected with a reverse osmosis membrane separation device; a concentrated water outlet of the tubular membrane separation device is connected with the coagulation reaction pond; a yielding water outlet of the reverse osmosis membrane separation device is connected with a yielding water pond; a concentrated water outlet of the reverse osmosis membrane separation device is connected with a concentrated water combustion furnace and the Fenton reaction device in sequence through pipelines respectively. The invention also discloses a treatment method for the aerospace propellant wastewater. By using the treatment system and the treatment method which are provided by the invention, most pollutants in the wastewater can be removed; the purpose of recycling the wastewater is achieved.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to an aerospace propellant wastewater treatment system and a treatment method. Background technique [0002] Aerospace propellant wastewater mainly comes from satellites, missile launches, propellant tankers, storage tanks, pipeline cleaning, ground cleaning of propellant warehouses, laboratory residual liquid and cleaning wastewater, etc. Therefore, the composition of propellant sewage is relatively complex, which contains not only high-temperature combustion products of unsymmetrical dimethylhydrazine and dinitrogen tetroxide, but also hydrochloric acid, ferric chloride, and chlorinated alkanes. The characteristics of propellant wastewater are: complex pollutant components in wastewater, high COD content, large changes in wastewater volume and concentration, high toxicity of wastewater, and serious pollution. [0003] The wastewater will cause great harm to the environment, cr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/06C02F9/10C02F11/12
CPCC02F9/00C02F11/122C02F2301/08C02F2305/026C02F1/461C02F1/46104C02F1/441C02F1/444C02F1/4672C02F1/52C02F1/722C02F1/66
Inventor 崔秀文
Owner 厦门科滤膜技术有限公司
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