A device for integrated deodorization and sewage treatment in municipal sewage plants

A technology for sewage treatment and municipal sewage, applied in the field of sewage treatment, can solve the problems of large construction investment cost, uneconomical operation, single operation mode, etc., to reduce construction and operation costs, improve absorption and removal effect, and simple operation and management. Effect

Active Publication Date: 2015-08-19
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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  • A device for integrated deodorization and sewage treatment in municipal sewage plants

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Embodiment 1

[0020] 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

[0023] 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 t...

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Abstract

The invention discloses a device for integrated deodorization and sewage treatment in a municipal sewage plant. The device comprises a semi-closed gas-collecting building arranged on an odor source, a submersible jet type aeration machine and an aeration tank, wherein a ventilation opening and a gas pipeline are arranged above the semi-closed gas-collecting building; the gas pipeline is communicated with the submersible jet type aeration machine; the malodorous gas of the odor source enters the submersible jet type aeration machine through the gas pipeline; the submersible jet type aeration machine is arranged below sewage in the aeration tank; the malodorous gas of the odor source and the sewage are mixed and are pumped into the aeration tank through the submersible jet type aeration machine; and the malodorous gas is removed through biochemical action in the aeration tank. Due to the mode, the design, operation and management of the deodorization facility can be simplified, and the investment and operating cost is reduced. Various malodorous substances are effectively treated by utilizing the biodegradation function of the aeration tank, and the treatment effect is good; and meanwhile, the odor treatment capacity can be adjusted according to the seasonal variation, and the device is easy and convenient to operate and high in adaptability.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a 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 absorption, adv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/02B01D53/84B01D53/52B01D53/58B01D53/02
CPCY02W10/15Y02E50/343Y02A50/20Y02E50/30Y02W10/10
Inventor 戴晓虎陈阳薛勇刚薛韵涵李伟
Owner SUZHOU TONGDE ENVIRONMENTAL PROTECTION TECHCO
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