Resourceful treatment system for p-nitroanisole wastewater

A technology for p-nitroanisole and a treatment system, which is applied in the field of p-nitroanisole waste water resource treatment system, can solve the problems of increased energy consumption, increased boiling point, decreased evaporation and the like, and can reduce evaporation energy. consumption, ensure the effect of smooth operation

Pending Publication Date: 2021-06-11
宁夏华御化工有限公司
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Problems solved by technology

Sodium p-nitrophenolate is continuously enriched in the MVR stock solution, resulting in an

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  • Resourceful treatment system for p-nitroanisole wastewater

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Embodiment Construction

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the embodiments. Obviously, the accompanying drawings in the following description are some embodiments of the present invention. Ordinary technicians can also obtain other drawings based on these drawings on the premise of not paying creative work.

[0020] see figure 1 , the embodiment of the present invention provides a p-nitroanisole wastewater resource treatment system, including a first raw water tank 10, an MVR evaporation concentration device 20, a second raw water tank 30, a forced cooling device 40, and a plate and frame filter 50 , the outlet of the first raw water tank 10 is connected with the inlet of the MVR evaporative concentration device 20, the mother liquor outlet of the MVR evaporative concentration device 20 is connected with the inlet of the second raw water t...

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Abstract

The invention discloses a resourceful treatment system for p-nitroanisole wastewater, which comprises a first raw water tank, an MVR evaporation and concentration device, a second raw water tank, a forced cooling device and a plate-and-frame filter, wherein an outlet of the first raw water tank is connected with an inlet of the MVR evaporation and concentration device, a mother liquor outlet of the MVR evaporation and concentration device is connected with an inlet of the second raw water tank, an outlet of the second raw water tank is connected with an inlet of the forced cooling device, an outlet of the forced cooling device is connected with an inlet of the plate-and-frame filter, a filtrate outlet of the plate-and-frame filter is connected with an inlet of the MVR evaporation and concentration device, the mother liquor and high-salinity wastewater are mixed and prepared in the second raw water tank, the solubility of sodium chloride in the prepared mixed solution just reaches cold saturation, sodium chloride cannot be separated out in the cooling process, only sodium p-nitrophenolate can be separated out, the problems that sodium chloride and sodium p-nitrophenolate are separated out synchronously and are difficult to separate in the prior art are solved, and sodium p-nitrophenolate is effectively recycled.

Description

technical field [0001] The invention relates to the technical field of chemical wastewater treatment, in particular to a p-nitroanisole wastewater resource treatment system. Background technique [0002] The production of p-nitroanisole will produce high-salt wastewater, mainly containing sodium p-nitrophenolate and sodium chloride. In the conventional treatment method, the high-salt wastewater is firstly cooled and treated to precipitate sodium p-nitrophenolate, and the precipitated sodium p-nitrophenolate is filtered through a plate and frame filter, and the content of sodium phenate in the filtered filtrate reaches saturation, about 3g / L, NaCl content 200g / L, this filtrate is sent to the MVR evaporator as the MVR stock solution, the MVR stock solution is evaporated and concentrated to a certain extent, and then the mother liquor is discharged to the cooling tank to cool down, at this time, sodium p-nitrophenolate and sodium chloride will separate out simultaneously. How...

Claims

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Application Information

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IPC IPC(8): C02F1/08C02F1/00C07C201/16C07C205/22C02F101/38C02F101/34
CPCC02F1/001C02F1/08C02F2101/34C02F2101/38C07C201/16C07C205/22
Inventor 顾家立顾行祥徐麟
Owner 宁夏华御化工有限公司
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