Sewage and sludge treatment system and environmental-friendly recycling method thereof

Abstract

The invention discloses a sewage and sludge treatment system and an environmental-friendly recycling method thereof. The sewage and sludge treatment system comprises a collecting tank (1) and is characterized in that the bottom of the collecting tank (1) is connected with a sludge treatment device (2), a discharging port is formed in the bottom of the sludge treatment device (2), a control valve (7) is arranged on the discharging port, a sludge sedimentation cylinder (5) is mounted below the discharging port, more than one anaerobic reaction devices (6) are arranged on the outer side of the sludge sedimentation cylinder (5), an outlet of a reaction sludge dewatering device (12) is connected with a coulter mixing machine (14) through a screw conveyer (13), an outlet in the bottom of the coulter mixing machine (14) is connected with a pressure filtration device (16), and the pressure filtration device (16) is connected with a water reducing ball-making machine (19). According to the sewage and sludge treatment system, sewage and sludge treatment cost is low, the sewage and the sludge can be separated at low energy consumption, the recycling rate of energy sources in the sewage and the sludge is increased, and energy-saving and environmental-friendly effects are remarkable.

Description

technical field [0001] The invention relates to a sewage sludge treatment system and a reuse method thereof, in particular to a sewage sludge treatment system and an environment-friendly reuse method thereof, belonging to the technical field of sewage treatment. Background technique [0002] With the acceleration of industrialization and urbanization, people will produce a large amount of sewage sludge in their production and life, and the direct discharge of sewage sludge into rivers, lakes and seas will cause great pollution. With the development of sewage sludge treatment technology up to now, how to carry out environmental protection treatment of sewage sludge is still a technical difficulty, especially to ensure the quality of effluent after treatment, and at the same time recycle the energy in sewage sludge and form valuable The end product is very important. Most of the traditional sewage sludge treatment adopts a single biological fermentation, drying or membrane se...

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Problems solved by technology

[0003] The purpose of the present invention is aimed at the low treatment efficiency and high treatment cost of the existing sewage sludge treatment equipment, it is difficult to complete the separation of sewage and sludge with low energy consumption, the energy recovery and utilization rate in sewage sludge is not high, and The water quality of the treated effluent is difficult to meet the discharge standard, and the energy-saving and environmental protection effects are not good. Now we provide a kind of good integrity, low treatment cost, and can complete the separation of sewage and sludge with low energy consumption. The energy recovery utilization rate has been improved, and the treated effluent water quality has reached the discharge standard, a sewage sludge treatment system with remarkable energy saving and environmental protection effects and its environmental protection reuse method

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