System and method for processing residual sludge decrement synchronous denitrification

Abstract

The invention provides a system and a method for processing residual sludge decrement synchronous denitrification, The system is characterized in that a raw water injection mechanism, a sludge injection mechanism, a draining mechanism and a mud discharge mechanism are respectively connected with a main reactor, sidewall of the main reactor is respectively provided with a pH sensor and an ORP sensor which are connected with a controlling device, the top of the main reactor is provided with a temperature control apparatus. The realization steps of the system comprise that the main reactor is inoculated to mixed sludge and adjusted to start the control apparatus, nitrification liquid is injected in the main reactor, slurry in the main reactor is reacted by a stirrer, and determined whether the mud discharge is required or mud change is required, deposited, drained for standby, the set value of the cycle number is determined by a computer. According to the invention, carbon source in residual sludge is discharged for strengthening sewage denitrification and treating phosphorus removal, exploitation and utilization of carbon source completed at same time in same space can be realized, and the cost of sludge disposal in water plant can be simultaneously reduced.

Description

technical field [0001] The invention relates to a sludge and sewage biological treatment technology, in particular to a system and a method for treating excess sludge with simultaneous denitrification for weight reduction. Background technique [0002] For various sewage biological treatment systems, a considerable part of the raw water carbon source is inevitably transferred to the remaining sludge phase through the assimilation of microorganisms. The large carbon source demand gap, on the other hand, also increases the load and cost of subsequent sludge treatment. Therefore, how to release the carbon source in the remaining sludge phase and use it to strengthen sewage denitrification and phosphorus removal treatment to reduce carbon consumption Energy consumption is of great significance for the sustainable operation of sewage treatment plants. [0003] However, in the development and utilization of carbon sources in excess sludge at home and abroad, the development and u...

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Problems solved by technology

[0002] For various sewage biological treatment systems, a considerable part of the raw water carbon source is inevitably transferred to the remaining sludge phase through the assimilation of microorganisms. The large carbon source demand gap, on the other hand, also increases the load and cost of subsequent sludge treatment. Therefore, how to release the carbon source in the remaining sludge phase and use it to strengthen sewage denitrification and phosphorus removal treatment to reduce carbon consumption Energy consumption, which is of great significance for the sustainable operation of sewage treatment plants

[0003] However, in the development and utilization of carbon sources in excess sludge at home and abroad, the development and utilization of internal carbon sources are habitually carried out separately. The technical focus is on the development of carbon sources in sludge, and the carbon sources after development are Additional elutriation and pipeline transportation are required to enter the conventional denitrification denitrification or phosphorus removal system for utilization. This type of technology is not very operable in practical applications, especially in the technical transformation of existing water plants. Obstacles and Economic Headwinds

In addition, the biochemical availability of internal carbon sources developed through independent systems and other effects of by-products on the main process are not yet clear, which also creates obstacles for the promotion and application of such internal carbon source development technologies

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