Sewage treatment system in cane sugar manufacture

Abstract

The invention discloses a sewage treatment system in cane sugar manufacture. The discharged water of the traditional sewage treatment system in cane sugar manufacture cannot reach the standard. According to the sewage treatment system, a pipeline is connected with an adjusting tank; a pipeline is connected with an anaerobic tank; a pump body is connected with an active sludge oxidation pond; a 1# oxidation pond, a 2# oxidation pond and a 3# oxidation pond are connected in series by pipelines; 1-6# sludge settling tanks are connected in parallel by pipelines. All the above facilities constitute a complete treatment system. The sewage treatment system treats sewage in the following sequence: the high-concentration wastewater and the sugar manufacture circulation surplus wastewater discharged by pipelines enter the adjusting tank and serially flow to the anaerobic tank through the pipelines; the anaerobically treated wastewater is pumped into the active sludge oxidation pond to be treated with active sludge, then enters into the 1# oxidation pond, the 2# oxidation pond and the 3# oxidation pond in sequence to be oxidized, and then enters into the 1-6# parallel sludge settling tanks for settling sludge, and finally the supernate is discharged. The COD index concentration of water discharged by the treatment system is 15-30mg / L and reaches the discharging standard.

Description

technical field [0001] The invention relates to a sewage treatment system after sugar cane sugar production, and belongs to the technical field of three wastes treatment after sugar production. Background technique [0002] The main component of sugarcane is sucrose, and using sugarcane as raw material to prepare sugar is the main means of sugar production in southern my country. At present, the method of making sugar from sugarcane is mainly the pressing method, through which the sugar-containing components in the sugarcane are squeezed out, and then purified, evaporated, concentrated, and crystallized to obtain white sugar. In the process of sucrose production, a large amount of sewage needs to be discharged. The discharged sewage contains high concentrations of COD and SS, deep color, and many foams, which will have a serious impact on the environment. It must be purified to meet the discharge standards before it can be discharged. . At present, the requirements for env...

AI Technical Summary

Problems solved by technology

The traditional sewage treatment system has such deficiencies: (1) The sugar production sewage directly enters the treatment system without going through the adjustment tank, and is very easily affected by the unexpected sugar running phenomenon in the sugar production process. When this part of the sewage is abnormal, the COD concentration may reach 2000~ 3000 mg / L, a large amount had entered the treatment system when it was detected, and the effluent water quality was not up to standard because the concentration of influent water was too high and exceeded the capacity of the treatment system; The range of changes is large, and it is difficult to adapt to the new standard requirements of effluent COD≤60mg / L

Because the traditional sewage treatment system for sugarcane sugar production has been difficult to meet the requirements of external drainage standards, it is necessary to design a new sewage treatment system so that the sewage treatment can meet the standards and discharge stably