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Method for treating sewage containing high nutrients

A treatment method and nutrient technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve problems such as difficult governance, polluted environment, complex water quality, etc., to reduce pollution emissions, environmental protection, and less investment

Active Publication Date: 2012-10-10
广东东泰乳业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the protein, fat, lactose, sucrose, etc., the water quality is complicated and the treatment is difficult; the existing biochemical treatment technology is not ideal and cannot purify various nutrients in the sewage. The COD content of the discharged water after biochemical treatment is still Between 200 and 400, resulting in unqualified final discharge of sewage
Excessive discharge pollutes the environment and brings serious consequences to the natural world

Method used

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  • Method for treating sewage containing high nutrients

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1, according to figure 1 Shown technological process, its treatment process is as follows:

[0017] 1. The measured pH value of the treated sewage is 4.0 and the COD value is 500. The sewage is introduced into the sealed pool for oxygen isolation treatment; the capacity of the sealed pool is 15M*10M*3M, and it is divided into three connected pools No. 1, No. 2, and No. 3. When No. 1 pool is full, it enters No. 2 pool through the overflow port , No. 2 pool is full and enters No. 3 pool through the overflow port. Since the capacity of the sealed pool is 450 cubic meters, the sewage from No. 1 pool to No. 3 pool must stay in the sealed pool for at least 2 hours, or longer At the same time, the sewage is pumped into the membrane pool in No. 3 pool.

[0018] 2. After the workshop sewage is treated with oxygen barrier in the sealed pool, the pH value is 4.5 and the COD value is 400. Then, it is pumped into the membrane tank (also known as the membrane treatment ...

Embodiment 2

[0026] Embodiment 2, according to figure 1 Shown technological process, its treatment process is as follows:

[0027] 1. The measured pH value of the treated sewage is 5.0 and the COD value is 650. The sewage is introduced into the sealed pool for oxygen isolation treatment; the capacity of the sealed pool is 15M*10M*3M, and it is divided into three connected pools No. 1, No. 2, and No. 3. When No. 1 pool is full, it enters No. 2 pool through the overflow port , No. 2 pool is full and enters No. 3 pool through the overflow port. Since the capacity of the sealed pool is 450 cubic meters, the sewage from No. 1 pool to No. 3 pool must stay in the sealed pool for at least 2 hours, or longer At the same time, the sewage is pumped into the membrane pool in No. 3 pool.

[0028] 2. The pH value of the workshop sewage is 5.6 and the COD value is 550 after oxygen barrier treatment in the sealed pool. Then, it is pumped into the membrane tank (also known as the membrane treatment tank...

Embodiment 3

[0036] Embodiment 3, according to figure 1 Shown technological process, its treatment process is as follows:

[0037] 1. The measured pH value of the treated sewage is 6.0 and the COD value is 800. The sewage is introduced into the sealed pool for oxygen isolation treatment; the capacity of the sealed pool is 15M*10M*3M, and it is divided into three connected pools No. 1, No. 2, and No. 3. When No. 1 pool is full, it enters No. 2 pool through the overflow port , No. 2 pool is full and enters No. 3 pool through the overflow port. Since the capacity of the sealed pool is 450 cubic meters, the sewage from No. 1 pool to No. 3 pool must stay in the sealed pool for at least 2 hours, or longer At the same time, the sewage is pumped into the membrane pool in No. 3 pool.

[0038] 2. The pH value of the workshop sewage is 6.5 and the COD value is 700 after oxygen barrier treatment in the sealed pool. Then, it is pumped into the membrane tank (also known as the membrane treatment tank...

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Abstract

The invention relates to a method for treating sewage containing high nutrients (such as protein, fat, carbohydrate, and the like), and belongs to the technical field of sewage treatment. The method comprises the following treatment steps of: carrying out oxygen isolation treatment on the sewage containing the high nutrients by using an oxygen isolating pool; carrying out acidity automatic adjustment and initial filtration in a membrane pool; adding EM (Effective Microorganisms) bacteria and urea in a gas pool for carrying out decomposition and separation on organic matters; and combining thetreated sewage with efficient polyaluminium chloride in a mud pool for precipitating into sludge. The treated sewage has the pH value of 7.0-7.5 and the COD (Chemical Oxygen Demand) value of 80-95 and is consistent with standards on emission in China. The method provided by the invention has a simple and feasible process and low investment, can be used for thoroughly removing nutrients in the sewage, is suitable for the sewage treatment for a dairy product production enterprise and is greatly significant for reducing pollutant emission and promoting environmental protection for the enterprises.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment and relates to a treatment method for sewage containing high nutrients (such as protein, fat, carbohydrates, etc.). Background technique [0002] The daily cleaning and cleaning of equipment, utensils, tools, and ground by dairy production enterprises will produce a large amount of sewage, which contains high nutrients (compared to sewage produced by other industries), including: protein, fat, lactose, sucrose, etc. etc., and the acidity is relatively high, and the untreated sewage is tested and analyzed. The detection values ​​of each item are generally: pH value 4-6; COD value 500-800; far beyond the national standard: pH value 6-9, COD value ≤100; the meaning of COD is: the amount of oxidant consumed by the oxidation of organic matter and reducing substances in water by chemical oxidants, converted into the number of milligrams of oxygen consumed per liter of water sample, this index m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
Inventor 林旭彬
Owner 广东东泰乳业有限公司