Method for pretreating tannery wastewater
A technology for tanning wastewater and pretreatment, which is used in animal processing wastewater treatment, oxidized water/sewage treatment, water/sewage multi-stage treatment, etc., to achieve good precipitation, biodegradation and enhanced flocculation.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0026] see figure 2 and image 3 In this embodiment, the homogeneous and even volume regulating pool includes a water quantity regulating pond and an aeration pipeline system arranged in it, and also includes an independent water quality regulating pond, the water inlet and the water outlet of the water quality regulating pond are all arranged at the upper part, and in the water quality regulating There is a water inlet pipe on the water inlet of the pool, and the water inlet of the water volume adjustment pool is set on the upper part, and its water outlet is lifted to the coagulation sedimentation tank at the next level through pipelines and water pumps, and an aeration pipeline system is set in the water quality adjustment tank. The water outlet of the water quality adjustment tank and the water inlet of the water volume adjustment tank are connected through pipelines.
[0027] The aeration pipeline systems set in the water volume adjustment tank and the water quality adj...
Embodiment 2
[0030] The pretreatment method of the present embodiment tannery wastewater, comprises the following steps:
[0031] a. Desulfurize the sulfur-containing wastewater collected in the tanning production process by conventional manganese sulfate catalytic oxidation, and control the sulfur content in the effluent to ≤3mg / L; use conventional alkali precipitation in the chromium-containing wastewater collected in the tanning production process The chromium removal treatment is carried out by using the method, and the chromium content in the effluent is controlled to be less than 1.5mg / L; the sulfur-containing wastewater and the chromium-containing wastewater are separately treated;
[0032] b. Mix the comprehensive waste water collected in the tanning production process with the desulfurization treatment and dechrome treatment waste water in step a respectively, and then enter the advection type oil separation grit chamber for oil separation sedimentation treatment. The residence tim...
Embodiment 3
[0036] The pretreatment method of the present embodiment tannery wastewater, comprises the following steps:
[0037] a. Desulfurize the sulfur-containing wastewater collected in the tanning production process by conventional manganese sulfate catalytic oxidation, and control the sulfur content in the effluent to ≤3mg / L; use conventional alkali precipitation in the chromium-containing wastewater collected in the tanning production process The chromium removal treatment is carried out by using the method, and the chromium content in the effluent is controlled to be less than 1.5mg / L; the sulfur-containing wastewater and the chromium-containing wastewater are separately treated;
[0038] b. Mix the comprehensive wastewater collected in the tanning production process with the wastewater that has undergone desulfurization treatment and dechrome treatment respectively in step a, and then enter the horizontal flow oil separation grit chamber for oil separation sedimentation treatment....
PUM
| Property | Measurement | Unit |
|---|---|---|
| surface load factor | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More