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A method of treating sewage

A sewage and sludge technology, which is applied in chemical instruments and methods, animal husbandry wastewater treatment, biological water/sewage treatment, etc., can solve the problems of inefficient simultaneous treatment, save aeration power, and improve nitrogen and phosphorus removal effect of ability

Active Publication Date: 2022-08-02
CHENGDU UNIV OF INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the technical defect that the nitrogen and phosphorus in the sewage cannot be efficiently treated simultaneously in the prior art, the present invention discloses a method for treating sewage. Bamboo-based biochar is used as filler, inoculated with sludge with synchronous nitrification, anaerobic ammonium oxidation and denitrification phosphorus removal bacteria, to control the concentration of dissolved oxygen, gradually increase the way of ammonia nitrogen inflow, and realize the treatment of sewage by a new type of micro-aerated biological filter Efficient nitrogen and phosphorus removal

Method used

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Embodiment 1

[0024] Embodiment 1: A method for treating sewage provided by the present invention includes the following steps:

[0025] (1) The sewage is introduced into the micro-aeration biological filter through the inlet pump, the micro-aeration biological filter is filled with bamboo-based biochar as a carrier, and the micro-aeration biological filter filled with the biochar is inoculated Adopt the SNAD method to treat the sludge after the sewage and the sludge after the denitrifying bacteria TN-14, the bacterial preservation number is CCTCC NO.M2013247, to treat the introduced sewage;

[0026] (2) After being processed in step (1), it flows out through the water outlet above the sedimentation zone of the micro-aeration biological filter.

[0027] The filling rate of the bamboo-based biochar filled in the step (1) is 40% of the inner space of the reactor in the micro-aeration biological filter.

[0028] In the step (1), the dissolved oxygen DO value of the micro-aeration biological f...

Embodiment 2

[0038] Embodiment 2: a method for treating sewage provided by the present invention, comprising the following steps:

[0039] (1) The sewage is introduced into the micro-aeration biological filter through the inlet pump, the micro-aeration biological filter is filled with bamboo-based biochar as a carrier, and the micro-aeration biological filter filled with the biochar is inoculated Adopt the SNAD method to treat the sludge after the sewage and the sludge after the denitrifying bacteria TN-14, the bacterial preservation number is CCTCC NO.M2013247, to treat the introduced sewage;

[0040] (2) After being processed in step (1), it flows out through the water outlet above the sedimentation zone of the micro-aeration biological filter.

[0041] The filling rate of the bamboo-based biochar filled in the step (1) is 50% of the inner space of the reactor in the micro-aeration biological filter.

[0042] In the step (1), the dissolved oxygen DO value of the micro-aeration biologica...

Embodiment 3

[0045] Embodiment 3: a method for treating sewage provided by the present invention, comprising the following steps:

[0046] (1) The sewage is introduced into the micro-aeration biological filter through the inlet pump, the micro-aeration biological filter is filled with bamboo-based biochar as a carrier, and the micro-aeration biological filter filled with the biochar is inoculated Adopt the SNAD method to treat the sludge after the sewage and the sludge after the denitrifying bacteria TN-14, the bacterial preservation number is CCTCC NO.M2013247, to treat the introduced sewage;

[0047] (2) After being processed in step (1), it flows out through the water outlet above the sedimentation zone of the micro-aeration biological filter.

[0048] The filling rate of the bamboo-based biochar filled in the step (1) is 50% of the inner space of the reactor in the micro-aeration biological filter.

[0049] In the step (1), the dissolved oxygen DO value of the micro-aeration biologica...

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Abstract

The invention discloses a method for treating sewage, comprising (1) introducing sewage into a micro-aeration biological filter, using bamboo-based biochar as a carrier in the micro-aeration biological filter, and inoculating the sewage after using the SNAD method to treat the sewage. The sludge and the sludge treated by the denitrifying bacteria TN-14 are treated for the sewage; (2) after the treatment in step (1), the sludge flows out through the water outlet above the sedimentation zone of the micro-aeration biological filter. The advantage is that the aeration power is saved, and the bamboo-based biochar is used as the filler to inoculate the sludge treated by the SNAD method and the sludge treated by the bacteria TN-14, so that there is no need to add an external carbon source when treating the wastewater. It is beneficial to enrich the denitrification and phosphorus removal species with slow growth rate, thereby improving the denitrification and phosphorus removal capacity at the same time.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, in particular to a method for treating sewage. Background technique [0002] With the increase in the demand for meat food in my country, pig farming occupies a dominant position in various meat farming industries, and the environmental problems brought about by it are becoming more and more prominent. Pig farms will produce a large amount of wastewater during breeding, which is rich in organic matter, ammonia nitrogen, phosphorus and other substances. If not treated effectively, it will seriously pollute surface water and groundwater, and endanger human health. At present, the environmental protection standard discharge wastewater treatment process is adopted, such as anaerobic-aerobic biochemical treatment (A / O, A 2 / O, etc.) and other combined processes are the mainstream processes for the treatment of manure and wastewater in many large-scale pig farms. Among them, the anaerobic pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/30C02F103/20
CPCC02F3/302C02F3/308C02F2103/20
Inventor 信欣秦嘉伟刘思强李沁芮
Owner CHENGDU UNIV OF INFORMATION TECH
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