Integrated sewage treatment system and method for hydrolytic-aerobic granular sludge

Abstract

The present invention relates to the technical field of environmental protection and sewage treatment and especially relates to an integrated sewage treatment system and a method for the hydrolytic-aerobic granular sludge, which comprises a first water inlet unit, a second water inlet unit, a water drainage unit, a sludge discharge unit, a control unit, a hydrolytic acidification area, an adjustment area and an aerobic granular sludge area. The first water inlet unit is in communication with the hydrolytic acidification area. The upper part of the hydrolytic acidification area is in communication with the adjustment area. The adjustment area and the aerobic granular sludge area are in communication with each other through the second water inlet unit. The water drainage unit is in communication with the aerobic granular sludge area. An aeration unit is in communication with the aerobic granular sludge area. The aeration unit and the water drainage unit are connected with the control unit. The entire system is reasonable and effective in structure, and simple to operate. The hydrolytic acidification technique and the aerobic granular sludge technique are organically combined, so that the sewage biodegradability is improved. The continuous feeding and intermittent reaction is realized. The difficult problems that the aerobic granular sludge is difficult to culture, hard to run stably for a long time, complicated in process and poor in quality of effluent water can be solved.

Description

technical field [0001] The invention relates to the technical fields of environmental protection and sewage treatment, in particular to a hydrolysis-aerobic granular sludge integrated sewage treatment system and method. Background technique [0002] With the rapid development of our country's economy, the amount of sewage water is also increasing. At present, the large-scale land occupation of sewage treatment plants, the production of a large number of by-products and the harsh surrounding environment, and the tight land use status of the city, the growing environmental needs of the people and the technology There are certain contradictions in the sustainable development of economy and society. We urgently need a technology that can achieve intensive, high-efficiency, and low-carbon sewage treatment, and aerobic granular sludge provides a way for the development of future sewage plants. [0003] The research on aerobic granular sludge began in the 1990s. Due to its obvious...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a hydrolysis-aerobic granular sludge integrated sewage treatment system and method to solve the problems in the prior art that the cultivation of aerobic granular sludge is difficult and the system is difficult to run stably for a long time, so as to effectively realize Synchronous removal of organic pollutants, nitrogen, phosphorus and other elements in sewage to ensure the quality of effluent and simplify the process flow

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