Process for efficient separation of organic carbon source in sewage and energy development and utilization

Abstract

The invention belongs to the field of sewage treatment and particularly provides a process for efficient separation of an organic carbon source in sewage and energy development and utilization. Most of suspended organic substances, colloid and parts of soluble organic carbon in raw water settle and are swept under the dual effects of a microbial flocculant and a macromolecular organic flocculant and are separated out of the sewage in the form of primary sludge, the primary sludge is mixed with biological sludge produced at a biological stage, anaerobic fermentation is performed to produce methane, and effluent at an organic carbon source separation stage is subjected to nitrogen and phosphorus removal at the biological stage. The process achieves organic carbon source separation before the biological stage, enables organic carbon to efficiently settle before the organic carbon enters cell walls, reduces the organic load at the biological stage, adopts a denitrifying phosphorus removal process to achieve the separation of the residual carbon source in the effluent and efficiency removal of ammonia, nitrogen and phosphorus, meanwhile achieves the multiple effects of reduction of aeration energy consumption, sludge output and greenhouse gas amount and the like, and has remarkable economic and environmental benefits.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and specifically relates to a high-efficiency source separation of organic carbon in sewage and an energy-based development and utilization process. The invention utilizes high-efficiency source separation of organic carbon coupled with mixed sludge anaerobic digestion technology to maximize the organic carbon in sewage develop and use. Background technique [0002] Sewage treatment is an energy-intensive industry and involves areas such as water ecological environment protection, energy resource utilization, and greenhouse effect control. Therefore, it is of great significance to develop a green, environmentally friendly, economical and energy-saving sewage treatment process. [0003] Organic carbon in sewage is a potential energy carrier, and its development and utilization will greatly promote the sustainable development of my country's sewage treatment industry. [0004] Traditional sewage t...

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Problems solved by technology

[0006] In order to solve the disadvantages of high energy consumption and high pollution in the traditional sewage treatment process, the present invention provides a high-efficiency source separation and energy development and utilization process of organic carbon in sewage

[0008] The present invention exerts the dual synergistic effect of microbial flocculant and polymer flocculant sedimentation-conditioning, solves the problems of large chemical flocculation sludge production and difficult treatment and disposal, and improves sludge dewatering performance through conditioning, providing sludge energy favorable conditions

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