Method and device for integral deodorization and sewage treatment of municipal sewage plants

A municipal sewage and sewage treatment technology, which is applied in biological water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of high construction investment cost, uneconomical operation, and single operation mode. Achieve the effects of reducing construction and operating costs, improving absorption and removal effects, and simplifying operation and management

Inactive Publication Date: 2013-06-05
SUZHOU TONGDE ENVIRONMENTAL PROTECTION TECHCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current conventional biological deodorization process still has the following problems: (1) The single packing layer used in the conventional biological deodorization process is often not conducive to the efficient removal of components with different properties at the same time, resulting in low overall operating efficiency of the process
(2) Most deodorization processes cannot realize on-line monitoring, the operation mode is single, and it is difficult to adjust according to the change of the odor load, resulting in poor tolerance of the device to the impact load or uneconomical operation
(3) The biological deodorization process generally has problems such as large floor area and high construction investment cost

Method used

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  • Method and device for integral deodorization and sewage treatment of municipal sewage plants

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Embodiment 1

[0028] A new municipal sewage treatment plant has been designed and modified, and the patent of the invention is used to achieve the functions of aeration and pumping to treat malodorous gas at the same time. The daily water treatment capacity of the sewage treatment plant is 80,000 tons / day, the COD is about 300mg / L, the BOD is about 150mg / L, and the ammonia nitrogen is about 30mg / L. The system adopts oxidation ditch treatment process. The system collects the main sources of gas from the grille, aeration grit chamber and sludge dewatering machine room. The aeration grit chamber adopts a full-coverage form, and the total gas treatment capacity is about 14,000m 3 / h (including ventilation volume). A total of 27 sets of 40kW submersible jet aerators are used, which can meet the oxygen supply demand of the aeration tank and the transmission demand of malodorous gas at the same time. After the system construction is completed, the operation data shows that the COD of the seconda...

Embodiment 2

[0031] The design, renovation and construction of a city's new municipal sewage treatment plant was carried out. The sewage treatment plant has a water treatment capacity of 100,000 tons per day, and is designed to treat COD at 320mg / L, BOD at about 200mg / L, and ammonia nitrogen at about 30 mg / L. The A / A / O process is used to collect and treat the malodorous gas from the grille, aerated grit chamber and sludge thickening tank, with a total gas volume of about 21,000m 3 / h (including ventilation volume). A total of 40 40kW submersible jet aerators are used, which can meet the oxygen supply demand of the aeration tank and the transmission demand of malodorous gas at the same time. Considering that the amount of malodorous gas produced by the sewage treatment plant is quite different in summer and winter, this deodorization system adopts the method of constant opening in summer and regular opening in winter (opening of the deodorization system means that the blower is connected to...

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Abstract

The invention discloses a method for integral deodorization and sewage treatment of municipal sewage plants. The method comprises the following steps of: erecting a half-sealed gas collection area around or above an odor source, or using a former half-sealed building, and collecting generated odor; and conveying the odor into a submersible jet type aerator through a conveying pipeline, uniformly enabling the mixed odor and sewage to enter an aeration basin through the submersible jet type aerator, and removing fusty matters through adsorption, dissolving and biological degradation. With the adoption of the manner, the method for the integral deodorization and sewage treatment of the municipal sewage plants can be used for simplifying the design, the operation and the management of a deodorization facility, reducing the investment cost and the operation cost, and effectively treating various fusty matters. Furthermore, the method for the integral deodorization and sewage treatment of the municipal sewage plants has a good treatment effect and is very applicable to deodorization updating improvement of the built sewage plants and construction of an integrated deodorization facility of newly built sewage plants.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a method and device for integrated deodorization and sewage treatment in municipal sewage plants. Background technique [0002] In recent years, with the improvement of people's living standards and the enhancement of environmental awareness, odor pollution has become a relatively prominent environmental problem. After promulgating the revised pollutant discharge standards for urban sewage plants in 2002, many established and newly built urban sewage plants have begun to build deodorization facilities and deodorization technologies in order to meet the odor discharge standards and reduce the impact on the surrounding environment and residents. It has been popularized and applied in many urban sewage treatment plants in our country. [0003] At present, the deodorization technologies for urban sewage treatment plants mainly include biological deodorization, chemical abso...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/84B01D53/18C02F3/12
CPCY02A50/20Y02W10/10
Inventor 戴晓虎陈阳薛勇刚薛韵涵李伟
Owner SUZHOU TONGDE ENVIRONMENTAL PROTECTION TECHCO
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