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A kind of recycling method of methanol protein comprehensive wastewater

A methanol protein and comprehensive wastewater technology, which is applied in general water supply conservation, chemical instruments and methods, applications, etc., can solve the problems of inability to realize recycling, low equipment use efficiency, substandard wastewater treatment, etc., to achieve resource recovery and utilization, The effect of improving production efficiency and reducing investment

Active Publication Date: 2019-06-28
义马煤业集团煤生化高科技工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide a recycling method for comprehensive methanol and protein wastewater, which can effectively solve the problems of substandard wastewater treatment, low equipment use efficiency, and inability to realize recycling.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] (1) Centrifuge the washing wastewater A generated in the methanol protein production process under the conditions of 18-30°C, feed rate 20T / h, and centrifugal force 13000-18000×g to obtain heavy phase sediment C and light phase liquid D respectively ;

[0017] (2) Concentrate the light phase liquid D obtained in step (1) by ultrafiltration to 1 / 5 of the volume of the light phase liquid D under the conditions of 18-30°C, flow rate 2T / h, and feed pressure 0.4-0.6Mpa, and separate Obtain concentrated liquid E and clear liquid F;

[0018] (3) Mixing the heavy phase sediment C obtained in step (1) and the concentrate E obtained in step (2) as raw materials for making organic fertilizer;

[0019] (4) Combine the supernatant F obtained in step (2) and the wastewater B produced during the post-treatment process of methanol protein extraction, perform reverse osmosis treatment at 18-30°C and a working pressure of 0.6-0.9MPa, and concentrate to 1 / 3 of the total volume of the cl...

Embodiment 2

[0021] (1) Transport the washing wastewater A produced in the methanol protein production process to the GEA disc high-speed centrifuge, and centrifuge at 18-30°C, feed rate 20T / h, centrifugal force 13000-18000×g, respectively Obtain heavy phase sediment C and light phase liquid D;

[0022] (2) Transfer the light phase liquid D obtained in step (1) to a 1000 molecular weight ultrafiltration system, and concentrate it into a light phase liquid by ultrafiltration under the conditions of 18-30°C, flow rate 2T / h, and feed pressure 0.4-0.6Mpa 1 / 5 of the volume of D, separated to obtain concentrate E and supernatant F; the described 1000 molecular weight ultrafiltration system is a prior art, such as the 1000 molecular weight ultrafiltration system produced by Luoyang Yangming Water Treatment Co., Ltd. SA-UF-9-225 Molecular weight ultrafiltration system;

[0023] (3) Mixing the heavy phase sediment C obtained in step (1) and the concentrate E obtained in step (2) as raw materials f...

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Abstract

The invention relates to a method for treating methanol protein comprehensive wastewater to effectively solve the problems that wastewater treatment can not meet the standard, the utilization efficiency of equipment is low, and recycling can not be achieved. According to the method, flushing wastewater A generated from methanol protein production is centrifuged to obtain heavy-phase sediment C and light-phase liquid D; the light-phase liquid D is subjected to ultrafiltration and concentration, and then separation is conducted to obtain concentrated solution E and clear liquid F; the heavy-phase sediment C and the concentrated solution E are mixed to serve as the raw material for making organic fertilizer; the clear liquid F is mixed with wastewater B generated from methanol protein extraction aftertreatment for reverse osmosis treatment and concentration, so that desalted water G and water H high in salinity and ammonia and nitrogen content are obtained. By the adoption of the method, recycling and zero discharge of wastewater are achieved, usage of inorganic salt is reduced greatly, production cost is reduced for enterprises without affecting the growth of yeast cells and the yield of methanol protein, and production efficiency and economic benefits of enterprises are improved.

Description

technical field [0001] The invention relates to the field of waste water treatment, in particular to a method for recycling methanol protein comprehensive waste water. Background technique [0002] Methanol protein is a kind of single-cell protein that is made from methanol and inorganic salt as the main raw materials, through liquid ventilation fermentation, separation of yeast cells from fermented mash, and spray drying of yeast cells. At present, there are 6 kinds of process methods for the production of methanol protein in the world, including the British ICI method, the German Hoechest-Uhde method, the Swedish Norprotein method, the Japanese MGC method, the French IFP method, and the American Provesteen method. Methanol protein is a safe animal feed additive with low production cost, which can replace traditional protein such as fishmeal and beans, reduce feed cost, improve feeding efficiency, and accelerate the development of my country's feed industry. The developmen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/02C05F7/00C02F1/44C02F1/38
CPCC02F1/38C02F1/441C02F1/444C02F9/00C02F2101/10C02F2101/101C02F2101/105C02F2101/34C02F2101/38C02F2209/05C02F2209/14C05F7/005Y02A20/131Y02A40/20Y02E50/30Y02W30/40
Inventor 苟万晓张敬东赵利军范延超任晓辉段兴志白冠章谢军侯龙龙张瑛乐段亚培李志红买旭林郝景梅
Owner 义马煤业集团煤生化高科技工程有限公司