High-salt high-concentration cellulose ether waste water treatment system

A sewage treatment system and cellulose ether technology, applied in the directions of water/sewage multi-stage treatment, heating water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of low sewage treatment efficiency and large energy consumption, etc. Achieve the effect of saving operating costs and improving production efficiency

Active Publication Date: 2015-08-12
湖州展望天明药业有限公司
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a high-salt and high-concentration cellulose ether sewage t

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  • High-salt high-concentration cellulose ether waste water treatment system

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Embodiment Construction

[0023] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0024] Aiming at the problems of high energy consumption and low sewage treatment efficiency in the existing cellulose ether sewage treatment, the present invention provides a high-salt and high-concentration cellulose ether sewage treatment system. During the sewage treatment process, the salt content is 10% The sewage material between 20% and 20% is flocculated, filtered and then evaporated.

[0025] Such as figure 1 As shown, the high-salt and high-concentration cellulose ether sewage treatment system of the embodiment of the present invention includes: a sequentially connected one-effect falling film evaporator 1, two-effect falling film evaporator 3 and three-effect forced circulation evaporator 5, wherein , the first-effect falling film evaporator...

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Abstract

The invention provides a high-salt high-concentration cellulose ether waste water treatment system and relates to the field of waste water treatment. The system is less in energy consumption and is high in waste water treatment efficiency. The high-salt high-concentration cellulose ether waste water treatment system includes, in a successively connecting manner, a first-effect falling-film evaporator, a second-effect falling-film evaporator and a third-effect forced circulating evaporator, wherein the first-effect falling-film evaporator performs first-effect evaporation on a waste water material being heated primarily to generate a concentrated liquid and a secondary steam; the second-effect falling-film evaporator, with the secondary steam as a heat source, continuously evaporates and concentrates the concentrated liquid to generate a concentrated liquid; and the concentrated liquid is fed into the third-effect forced circulating evaporator for being crystallized therein.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a high-salt and high-concentration cellulose ether sewage treatment system. Background technique [0002] With the rapid economic growth and population increase, the pollution of water resources is becoming more and more serious. Among them, the wastewater produced by cellulose ether production has caused great pollution to the environment. Therefore, it is necessary to effectively treat the wastewater produced by cellulose ether production. sewage treatment. [0003] The quantity and composition characteristics of the waste water produced by the production of cellulose ether are as follows: Calculated based on the daily output of 20 tons, the daily production of concentrated water is 360t / d. The average chloride concentration of the concentrated water produced is 25000mg / L, the COD is 20000mg / L, the pH is basically neutral, and it mainly contains organic matter, soluble and coll...

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Application Information

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IPC IPC(8): C02F9/10C01D3/04C02F1/04
Inventor 姚培源朱云华钱剑明许旅强
Owner 湖州展望天明药业有限公司
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