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Treatment method of ammonia-nitrogen-containing industrial wastewater

A technology for industrial wastewater and treatment methods, applied in the direction of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve problems that are not suitable for large-scale industrial applications, and chemical methods are easy to cause other pollution , Unreasonable compatibility of bacterial agents and other problems, to achieve the effect of improving biological treatment efficiency, easy acceptance, and reducing operating costs

Active Publication Date: 2015-05-20
张玉兰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the breakpoint chlorine addition method, selective ion exchange method, and ammonia stripping method are not suitable for large-scale industrial applications, while chemical methods are likely to cause other pollution, and the cost is high. At present, the most economical and environmentally friendly method is the biological method. Most of the biological methods have the following disadvantages: unreasonable bacterial agent compatibility, poor treatment effect, and high cost, which are difficult for enterprises to accept

Method used

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  • Treatment method of ammonia-nitrogen-containing industrial wastewater

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Step 1) Preparation of composite bacterial agent: Culture Alcaligenes faecalis, Bacillus licheniformis, Acinetobacter baumannii, Rhodococcus and Pseudomonas fluorescens respectively to a concentration of 1×10 8 Bacteria solution per ml, mixed according to the volume ratio of 1:1:2:2:3, then mixed and stirred evenly with the carrier according to the mass ratio of 1:1, and finally dried at low temperature, the drying temperature was 20°C, and after drying, the The water content is 10%, that is, the carrier is prepared by mixing diatomite and chitosan uniformly according to the mass ratio of 1:1;

[0036] Step 2) Precipitation and impurity removal: cooling the waste water to 20°C, and then entering the sedimentation tank, the sedimentation time is 12 hours, and then discharged; the bottom of the sedimentation tank is laid with fine sand with a thickness of 1 meter;

[0037] Step 3) adjust the pH: the waste water enters the acid-base adjustment pool, and 1M hydrochloric aci...

Embodiment 2

[0042] A method for treating industrial wastewater containing ammonia nitrogen, comprising the steps of:

[0043] Step 1) Preparation of composite bacterial agent: Culture Alcaligenes faecalis, Bacillus licheniformis, Acinetobacter baumannii, Rhodococcus and Pseudomonas fluorescens respectively to a concentration of 1×10 8 Bacteria solution per ml, mixed according to the volume ratio of 1:1:2:2:3, then mixed and stirred evenly with the carrier according to the mass ratio of 1:1, and finally dried at low temperature, the drying temperature was 30°C, and after drying, the The water content is 10%, that is, the carrier is prepared by mixing diatomite and chitosan uniformly according to the mass ratio of 1:1;

[0044]The Alcaligenes faecalis is Alcaligenes faecalis ATCC 31555 (Structural studies of an extracellular polysaccharide (S-130) elaborated by Alcaligenes ATCC31555, Carbohydrate Research, 1986);

[0045] The Bacillus licheniformis is CCTCC NO.M206082 (CN101037659A);

[0...

Embodiment 3

[0055] Take the waste water of a certain factory in this city as an example, detect the waste water treatment effect of embodiment 2, take three water samples for each test sample, get the average value of the three test results, and detect that each index has reached the ideal discharge standard, and the detection index of waste water See Table 1:

[0056] Table 1

[0057]

[0058] Conclusion: After treatment, the contents of heavy COD, ammonia nitrogen and aniline substances in industrial wastewater are greatly reduced, which meets the discharge standards.

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Abstract

The invention belongs to the field of wastewater treatment environmental protection, and discloses a treatment method of ammonia-nitrogen-containing industrial wastewater, which comprises the following steps: 1) preparing a composite microbial inoculant; 2) precipitating to remove impurities; 3) regulating the pH value; 4) preparing a carbon source; 5) carrying out biological oxidation; and 6) preparing a feed protein. The method can effectively treat the ammonia nitrogen wastewater at low cost, and is suitable for industrialized popularization and use.

Description

technical field [0001] The invention belongs to the field of waste water treatment and environmental protection, and in particular relates to a treatment method for industrial waste water containing ammonia nitrogen. Background technique [0002] Ammonia nitrogen refers to nitrogen that exists in the form of free ammonia (NH3) and ammonium ions (NH4+) in water. The nitrogen content of animal organic matter is generally higher than that of vegetable organic matter. At the same time, nitrogen-containing organic matter in human and animal manure is very unstable and easily decomposed into ammonia. The composition of industrial wastewater is complex, and ammonia nitrogen is one of the more difficult pollutants to treat. A considerable number of industrial polluting enterprises in our country would rather be punished than invest in wastewater treatment. Even if there is a wastewater treatment device, the operation is extremely abnormal. Therefore, it is imminent to develop a wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14A23K1/00C02F101/16
Inventor 张玉兰牟善彬
Owner 张玉兰
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