Method of enhancing organism treatment domestic sewage by employing complex enzyme biological accelerant

A bioaccelerator and domestic sewage technology, which is applied in biological water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problems of increased loss, not much, discounted survival rate, etc., and achieve reduction Operating cost, simple dosing process, and low equipment requirements

Inactive Publication Date: 2007-10-24
上海市莘庄工业区经济技术发展有限公司 +1
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, at this stage, there are not many examples of using genetically engineered bacteria to strengthen biological treatment in the biological treatment unit of domestic sewage treatment.
This is because, first of all, due to the slow multiplication rate of many engineering strains, it is difficult to maintain long-term strain dominance in the treatment unit; secondly, because the cultivation environment of engineering strains is very different from domestic sewage, engineering strains There is an adaptation process to the living environment of domestic sewage and the original microbial population in domestic sewage, so its survival rate is greatly reduced; thirdly, due to the complex water quality components of domestic sewage, the added engineering bacteria will lose activity and loss Intensified, making the fixed carrier partly inv

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Embodiment 1, the method for adding composite enzyme bioaccelerator to strengthen biological treatment in traditional activated sludge treatment unit

[0013] The compound enzyme bioaccelerator is directly added to the water inlet pipeline, and the dosage is 0.5-15 mg / L (mg / L) of waste water, which is naturally mixed by hydraulic force.

[0014] Chemical oxygen demand (COD) in water Cr ) content is 300-500 mg / L (mg / L), influent ammonia nitrogen is 40-70 mg / L (mg / L), sludge concentration is 1-2 g / L (g / L), water The residence time is 4.5 hours, the sludge age is 10-15 days, and the dissolved oxygen in the aerobic unit is not less than 2 mg / L (mg / L).

[0015] The chemical oxygen consumption (COD Cr ) content of 50-70 mg / L (mg / L), and ammonia nitrogen of 30-40 mg / L (mg / L), exceeding the domestic sewage discharge national standard of ammonia nitrogen ≤ 15 mg / L (mg / L).

[0016] The chemical oxygen consumption (COD Cr ) content of 40-50 mg / L (mg / L), ammonia nitrogen of 10-...

Embodiment 2

[0017] Embodiment 2, the method for adding composite enzyme bioaccelerator to strengthen biological treatment in sequence batch type batch activated sludge process (SBR) treatment unit

[0018] The compound enzyme bioaccelerator is directly added to the water inlet pipeline, and the dosage is 0.5mg to 15mg / L of wastewater, and it is naturally mixed by hydraulic power.

[0019] The chemical oxygen demand (COD) Cr ) content is 300-500 mg / L (mg / L), ammonia nitrogen is 60-120 mg / L (mg / L), sludge concentration is 2-4 g / L (g / L), and the residence time of water is 8 hours, the sludge age is 10-15 days, and the dissolved oxygen in the aerobic unit is not less than 2 mg / L (mg / L).

[0020] The chemical oxygen consumption (COD Cr ) content of 50-70 mg / L (mg / L), and ammonia nitrogen of 15-25 mg / L (mg / L), exceeding the national standard for domestic sewage discharge of ammonia nitrogen ≤ 15 mg / L (mg / L).

[0021] The chemical oxygen consumption (COD Cr ) content is 40-50 mg / L (mg / L), am...

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PUM

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Abstract

The invention discloses a living effluent harness reinforcing method through biological complex enzyme accelerant, which is characterized by the following: putting 0. 5-15mg/L complex enzyme accelerant into biological disposing unit; activating and restoring the native microbe in the living effluent; emulsifying, decomposing or disintegrating the pollution in the water body; eliminating the harmful material to transmit and decompose the organic pollution; fitting for active sludge method process unit, sequent-batch typed interval activity sludge method (SRB) biological process unit and contact oxidizing, biological filter pond, biological rotary disc process unit; discharging possible biological safe problem due to engineering bacteria with simple technique and low operating cost.

Description

【Technical field】 [0001] The invention relates to the technical field of environmental protection, in particular to a method for strengthening biological treatment of domestic sewage by using a compound enzyme bioaccelerator. 【Background technique】 [0002] Economic development has brought about the continuous expansion of urbanization scale, and a large amount of domestic sewage will flow into urban rivers and surrounding water systems, resulting in the deterioration of the water environment. According to statistics, more than 90% of urban rivers in my country are currently polluted at different levels. However, in my country's current urban construction, the construction of environmental protection facilities is relatively lagging behind, and the treatment rate of urban sewage is usually less than 50%. Since the current factories have generally moved from the city center to the outskirts of the city, the city center is mainly dominated by domestic sewage. In the absence o...

Claims

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Application Information

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IPC IPC(8): C02F3/00C02F3/32C02F3/30
Inventor 胥峥林逢凯刘亚马兴发孔文龙孙金康
Owner 上海市莘庄工业区经济技术发展有限公司
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