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A system and method for viscose fiber wastewater, sludge and waste gas treatment

A viscose fiber, waste gas treatment technology, applied in water/sludge/sewage treatment, sludge treatment, water/sewage treatment, etc. Complicated and other problems, to achieve the effect of safe and convenient operation, high feasibility and good effect

Active Publication Date: 2019-03-26
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] Purpose of the invention: To provide a kind of viscose fiber wastewater, sludge, The system and method of waste gas treatment realize the efficient treatment and stable compliance of waste water, sludge and waste gas in the viscose industry

Method used

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  • A system and method for viscose fiber wastewater, sludge and waste gas treatment
  • A system and method for viscose fiber wastewater, sludge and waste gas treatment
  • A system and method for viscose fiber wastewater, sludge and waste gas treatment

Examples

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Embodiment 1

[0066] The raw water in Example 1 is taken from a certain viscose fiber wastewater factory wastewater, and the total daily treatment is 56000m 3 / d, of which the amount of acidic wastewater is 42000m 3 / d, alkaline wastewater volume 14000m 3 / d, 24h operation, the average sewage treatment volume per hour is 2333m 3 / h, the main pollution index of wastewater is COD Cr , pH, SS, Zn 2+ , S 2- , the wastewater quality is as follows:

[0067]

[0068] Put the waste water to be treated into the process construction treatment and reuse system of the present invention, the waste water to be treated sequentially passes through the sump, the aeration stripping tank, the neutralization reaction tank, the primary sedimentation tank, the pH adjustment tank, the aeration tank, the secondary sedimentation tank pool, sludge thickening pool; neutralization reaction pool, adding ferrous sulfate with a purity of 85% and calcium carbide slurry with a purity of 12% to control the pH of the...

Embodiment 2

[0071] The raw water in embodiment 2 is taken from a certain viscose fiber wastewater factory wastewater, and the total daily treatment is 48000m 3 / d, of which the amount of acidic wastewater is 32000m 3 / d, alkaline wastewater volume 16000m 3 / d, 24h operation, the average sewage treatment volume per hour is 2100m 3 / h, the main pollution index of wastewater is COD Cr , pH, SS, Zn 2+ , S 2- , the wastewater quality is as follows:

[0072]

[0073] Put the waste water to be treated into the process construction treatment and reuse system of the present invention, the waste water to be treated sequentially passes through the sump, the aeration stripping tank, the neutralization reaction tank, the primary sedimentation tank, the pH adjustment tank, the aeration tank, the secondary sedimentation tank pool, sludge thickening pool; neutralization reaction pool, adding ferrous sulfate with a purity of 86% and calcium carbide slurry with a purity of 13% to control the pH of ...

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Abstract

The invention discloses a system and a method for treating wastewater, sludge and waste gas of viscose. The method comprises the following steps: (1) collecting acidic wastewater and alkaline wastewater; (2) mainly removing sulphide and non-degradable organic matters in an aeration stripping pool; (3) subjecting treated water obtained in the step (2) to a neutralizing reaction for precipitation, and adding a coagulant and a coagulant aid so as to promote agglomeration of particles in the water; (4) allowing the treated water obtained in the step (3) to enter a cascade aeration tank, carrying out aeration treatment, allowing effluent to reach discharge standards, and carrying out discharging; (5) subjecting sludge produced in all steps to treatment, and subjecting a supernatant to treatmentthrough the step (2); and (6) subjecting waste gas produced in all steps, allowing treated waste gas to reach discharge standards, and carrying out discharging. The method provided by the invention can effectively treat the wastewater, the sludge and the waste gas produced by the viscose, and has the advantages of stable removal effect, low operation cost, high safety factor, high treatment efficiency and extensive popularization value.

Description

technical field [0001] The invention discloses a system and method for treating viscose fiber wastewater, sludge and waste gas, belonging to the field of viscose industry wastewater, sludge and waste gas treatment. technical background [0002] Viscose fiber is a chemical fiber processed by chemical and mechanical methods using polymer materials containing natural cellulose such as wood pulp and cotton pulp. One of the important materials of raw materials. The production process of viscose filament is: pulp dipping bath caustic soda solution to produce alkali cellulose, alkali cellulose reacts with carbon disulfide to produce sodium cellulose sulfonate (called sulfonation) sodium cellulose sulfonate is then dissolved in dilute sodium hydroxide Solution, into mucus, called viscose. The viscose can be sent to the spinning machine after being filtered, defoamed and matured. Spinning in the spinning workshop, when the viscose enters the coagulation bath (mainly composed of su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F11/122B01D53/75C02F103/30C02F101/10
CPCB01D53/75C02F1/20C02F1/281C02F1/463C02F1/5236C02F1/66C02F3/32C02F7/00C02F9/00C02F11/122C02F2001/007C02F2101/101C02F2103/30
Inventor 许明操家顺李超沈晓笑
Owner HOHAI UNIV