Nitrocellulose waste acid water and lime milk neutralization treatment device

Abstract

The invention discloses a neutralization treatment device for nitrocellulose waste acid water and lime cream and relates to the field of wastewater treatment. The neutralization treatment device for the nitrocellulose waste acid water and the lime cream can stably control the neutralization pH value of the waste acid water and the lime cream and reduce failure rate of lime cream valves and comprises a neutralization reaction tank, a lime cream storage trough, lime cream pipelines, an acid water pipeline, controllers, a lime cream return pipeline and a pH value sensor of the neutralization reaction tank, wherein the acid water pipeline is connected with the neutralization reaction tank; an acid water pump is arranged on the acid water pipeline; two ends of the lime cream pipeline are connected with the lime cream storage trough and the neutralization reaction tank; a lime cream pump, a three-way connector and a lime cream valve with the fixed opening degree are sequentially arranged on the lime cream pipelines; two ends of the lime cream return pipeline are respectively connected with the lime cream storage trough and the three-way connector; the controllers control the rotational speed of the acid water pump according to the signals of the pH value sensor. The neutralization treatment device for the nitrocellulose waste acid water and the lime cream can be used for the design of neutralizing treatment devices for nitrocellulose waste acid water and the lime cream and reconstruction of conventional devices.

Description

technical field [0001] The invention relates to the field of waste water treatment, in particular to a neutralization treatment device for nitrocellulose waste acid water and lime milk. Background technique [0002] In the prior art, the neutralization pH value of nitrocellulose waste acid water (containing sulfuric acid and nitric acid) and lime milk is controlled by: the amount of acid water treatment water is basically unchanged, and the dosage and concentration of lime milk are changed. The pH of the lime milk storage tank is adjusted by the pump, and the electric valve is installed under the chute. The electric valve adjusts the flow rate by remote control, and the excess emulsion returns to the storage tank. The existing problems are that the flow rate of milk of lime is difficult to control accurately, the pH value cannot be stably controlled within the range required by the process, the electric valve will be adjusted frequently, and the scaling of the lime conveying...

AI Technical Summary

Problems solved by technology

The existing problem is that the lime milk flow rate is difficult to control accurately, the pH value cannot be stably controlled within the range of process requirements, and the electric valve will be frequently adjusted. In addition, the lime transportation pipeline is seriously scaled, resulting in a high failure rate of the electric valve.

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