Device and method for strengthening and improving segment water sludge reduction by predation action of chironomidae larvae

Abstract

The invention discloses a device and a method for strengthening and improving segment water sludge reduction by predation action of chironomidae larvae, belonging to the technical field of sewage biological treatment by a biochemical method. Recently, the chironomidae larvae has sludge reduction and an action of improving the sludge settleability for the first time, and the advantages that the sludge reduction of the chironomidae larvae has less energy consumption and low operating cost and does not generate secondary pollution on the environment are utilized. Aiming at the defects of large residual sludge output of the existing improved section water inlet technology, in a third section aerobic reactor of the improved section water inlet technology, padding is arranged and the chironomidae larvae is inoculated; a reaction device integrated with sludge reduction and nitrogen and phosphorus removal actions is developed by the predation action of the chironomidae larvae; simultaneous nitrification and denitrification are achieved in the final aerobic reactor by technology adjustment; the total nitrogen removal rate is improved; and a combination system integrated with energy conservation, stable nitrogen and phosphorus removal and efficient sludge reduction technology is achieved, and theoretical basis and technical support are provided for the upgrading and reconstructing of a municipal wastewater treatment plant.

Description

technical field [0001] The invention relates to a device and method for enhancing and improving segmental influent sludge reduction by utilizing the predation effect of chironomus larvae, and belongs to the technical field of biochemical sewage biological treatment. Under the condition of no new structures, by inoculating chironomus larvae in the third-stage aerobic reactor of the improved segmented influent denitrification and phosphorus removal device, and adjusting the process parameters appropriately according to the growth habits of chironomus larvae, the device has synchronous nitrification and denitrification Effect Nitrogen and phosphorus are removed while reducing the amount of excess sludge. It is especially suitable for the upgrade and transformation of sewage treatment plants and the new construction of integrated sewage treatment plants. Background technique [0002] The improved segmental influent nitrogen and phosphorus removal process is a newly developed bi...

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the current improved segmented water inflow process produces a large amount of excess sludge while treating sewage, and combines the three key technologies of synchronous nitrification and denitrification, energy saving and sludge reduction, and proposes a method based on improved segmental influent The sewage treatment device and method, by adding fillers to the third stage aerobic reactor, inoculating chironomus larvae and adjusting the operating parameters appropriately, can use the predation effect of microorganisms to reduce sludge without affecting the denitrification and phosphorus removal of sewage Quantitative treatment, expanding the function of the original improved segmented water inflow process, upgrading to a combined system integrating nitrogen and phosphorus removal with synchronous nitrification and denitrification effect and high-efficiency sludge reduction technology, improving the total nitrogen removal rate and strengthening the sewage treatment system. Overall performance, realize biological denitrification and dephosphorization of sewage and reduction of excess sludge at the same time without adding new structures, providing theoretical basis and technical support for upgrading and upgrading of urban sewage treatment plants

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