A pulp recycling system

Abstract

A paper pulp recycling treatment system comprises a main pipe, a pipeline I, an electromagnetic switch I, an integrated water purifier, a secondary sedimentation tank, a pipeline II, an electromagnetic switch II, a suction dredger, a clean water tank, a pipeline III, a water pump, a liquid level sensor I, a controller and a pipeline IV, wherein the front end of the main pipe is connected with a paper pulp workshop, one end of the pipeline I is connected with the main pipe, the other end is connected with the integrated water purifier, one end of the pipeline II is connected with the main pipe, the other end is connected with the secondary sedimentation tank, and the controller is arranged beside the secondary sedimentation tank; the electromagnetic switch I, the integrated water purifier, the electromagnetic switch II, the suction dredger, the water pump and the liquid level sensor I are connected with the controller through cables. The paper pulp recycling treatment system is simple in structure and convenient to maintain, the manual operation time is saved, and the working efficiency is improved. Integrated water purification equipment and the secondary sedimentation tank are combined, the paper pulp recovery rate is 95% or above, the papermaking cost is better saved, and environmental pollution caused by papermaking sewage is effectively avoided.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a pulp recovery and utilization treatment system. Background technique [0002] Pulping is the process of separating fibers from plant fiber raw materials to obtain pulp. Pulping methods can be mainly divided into mechanical method, chemical method and chemical mechanical method, and mechanical pulp, chemical pulp and chemical mechanical pulp are obtained respectively. In recent years, a new technology, biopulping, has emerged. It is a composite process based on biological decomposition, combined with various physical cracking and mechanical cracking. Papermaking needs to consume a certain amount of water. Pulp wastewater is generated during the process of making pulp. The pulp wastewater also contains a small amount of pulp. If it is directly discharged as wastewater, it will cause environmental pollution. The current practice is to purify pulp wastewater before dischargi...

AI Technical Summary

Problems solved by technology

The purified pulp has not been properly recovered, which also causes waste of raw materials to a certain extent

In order to avoid the waste of a large amount of raw materials caused by the pulp brought along with the pulp wastewater, pulp wastewater recovery and treatment equipment has also begun to appear on the market, which generally uses a grid filter for sieving. This kind of work is time-consuming and laborious, and the efficiency is very low. Moreover, the pulp recovery rate is very low, it is difficult to meet the requirements, resulting in waste of cost, and sometimes the treatment is not good, so that the follow-up wastewater cannot be purified, causing environmental pollution.

Images