Small-size direct-discharge type biological treatment process and equipment of bean curd production wastewater

Abstract

The invention relates to a small-size direct-discharge type biological treatment process and equipment of bean curd production wastewater, belongs to the field of wastewater treatment, and aims to overcome the problems of the conventional bean curd production wastewater treatment method for a small-size company. The equipment comprises a controller, an adjusting pond with grids, an SBR pond, a first electromagnetic valve, an air pump, porous packing, a water level sensor, a pad layer, a water outlet and a second electromagnetic valve, wherein the air pump is internally communicated with the SBR pond through an air inlet tube; the porous packing and the water level sensor are arranged inside the SBR pond; the pad layer is arranged at the bottom of the SBR pond; the water outlet is formed in the bottom of the SBR pond; the second electromagnetic valve is used for controlling the switch of the water outlet of the SBR pond; the pad layer at the bottom of the SBR pond is made of a rough material. The equipment provided by the invention is easy to operate, simple and feasible in process, low in cost and good in effect, is very applicable to small-size bean curd production wastewater, has both environmental and social benefits, can be used in small-size companies, can be also used for treating other high-concentration wastewaters, and has a good application prospect.

Description

technical field [0001] The invention belongs to the field of wastewater treatment, and in particular relates to a small-scale direct-discharge biological treatment process and equipment for wastewater from tofu production. Background technique [0002] Tofu is a daily food for people, but a large amount of waste water will be generated in the production process. It is generally believed that the ratio of unit mass of tofu finished product and discharged waste water is more than 1:10, that is, the production of 1 kg of tofu produces at least 10 L of waste water. Since more than 50% of the tofu in the market is produced by the waste water of tofu workshops distributed in the suburbs of the city, the amount of waste water is small and scattered, but the degree of pollution is high, and the discharge method is mostly direct discharge. The first consequence is to increase the load on the municipal sewage pipe network Second, it is easy to produce odor, breed mosquitoes and flies ...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the difficulties existing in the existing method of treating tofu production wastewater for small enterprises, the present invention provides a small-scale direct discharge biological treatment process and equipment for tofu production wastewater

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